"Milk bean curd" helps dairy farmers solve the problem

Jelly jelly, yoghurt tofu, taro popcorn crisps, banana peel jam, anti-fatigue milk vinegar... Recently, at the 6th Nanjing University Food Science and Technology Forum hosted by Nanjing University of Finance and Economics, School of Food Science and Engineering, from Nanjing University of Finance and Economics, Nanjing Students from five colleges and universities, namely Agricultural University, Nanjing University of Technology, Nanjing Normal University and Nanjing Forestry University, demonstrated to the judges and the audience that they had developed their own “innovative food” with their own professional advantages, which was an eye-opener.

The “Luo Shenhua Yogurt Bean Curd” project developed by a junior student of Dongcai University and other students from the College of Food Science and Engineering of Nancai University attracted the interest of the judges and the audience. Dong Yu introduced that this product is actually not tofu, but is made of yogurt and added the “tofu”-like “floral food” that is the active ingredient of Luo Shen Hua. It contains not only the rich natural nutrients of Luo Shen Hua, but also contains extremely rich and Easy to absorb casein, ruddy color, sweet and sour taste, smooth taste, appetite to stimulate appetite, appetizers, beauty, improve the sleep tonic effect.

When the judges asked about the source of creativity, Dong Tao's answer greatly exceeded people's expectations: “My hometown was in Keshan County, Heilongjiang Province. After the Sanlu milk powder incident, many people became suspicious of milk and the dairy farmers in their hometown encountered To unprecedented difficulties, many dairy farmers have even killed the dairy cows that are keeping the whole family's life. I am very sad to see them. I hope that the projects I have developed will help them tide over the difficulties!” Prof. Liu Xiaogeng, the judge of the competition, believes that The projects of students like Yan and others not only embody the innovative thinking in the academic field, but also reflect the social responsibility of contemporary college students. It is worthy of recognition and encouragement.

At the forum, college students used multimedia courseware presentations, physical displays, live presentations, and product trials to “sell” their research projects to the experts and classmates present. Students of the Southern Normal University, such as strawberry fresh-keeping clothes, smart fish scales and isomalt of South Agricultural University students, and high-fiber citron puffing shortcakes from Nanlin University students, have made experts judges “very difficult and difficult to choose”.

Professor Qiang Zhang, Director of Department of Biosystems Engineering at the University of Manitoba in Canada and Honorary Dean of the School of Food Science and Engineering at Nancai University, believes that organizing science and technology innovation and practical activities such as the University Food Science and Technology Forum can not only improve college students’ entrepreneurial innovation quality and hands-on Ability and practical ability, but also help college students to integrate into society as soon as possible and enhance their future employment competitiveness. (Li Rongguo Chen Xiaochun)

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What are the side effects of Bo Ziren? Bai Ziren's medication taboo

Many people who are jealous and jealous should not be allowed to take it.

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3. "combined with Materia Medica": phlegm, lung inflation, stool leak, stomach vomiting, four disabled.

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Fox's feed preparation

Fox is one of the internationally recognized rare fur animals, and it is kept in many countries in the world. It belongs to carnivorous monogastric animals and needs to be formulated according to nutritional requirements and feeding standards as well as local feed conditions. At the same time pay attention to the complementary effects of various feed proteins, physical and chemical properties, etc., in order to improve the nutritional value and utilization of feed. (a) fox diet feed 1. Animal feed: including all kinds of small trash fish, miscellaneous livestock and poultry, all kinds of wild small animals, such as rats, cockroaches, fly maggots, frogs and so on. Fish meal, bone meal, blood meal, silkworm meal, etc. can also be used as dry animal feed. Animal feed generally accounts for 45% to 65% in diets. Fresh meat, livestock and poultry waste can be directly fed after washing and smashing; fish feed, fish with more protein mucus on the surface (such as loach) should be first hot water scald to remove mucus, dried fish should be soaked Desalting, washing and crushing after feeding; cocoon processing to be thoroughly soaked to remove the residual alkali, after cooking and meat, fish smash feeding; 蚯蚓 dig from the soil and put water to raise 1 to 2 days. Let it drain the mud in the digestive cavity, wash it with clean water, and cook it with minced meat. 2. Plant feed: Includes various grain and oil crops and by-products. Such as corn flour, sorghum flour, wheat bran, bean cake, peanut cake, cottonseed cake and so on. There are also a variety of vegetables, fruits, wild vegetables and so on. General cereal feeds account for 35% to 50% of the diet, fruits and vegetables account for 5% to 10%. Cereal feed cornmeal, wheat bran, bean cake, etc. are mixed together and put in a pot. They should be fully cooked, heated to 100°C, and fed for 5 minutes. Fruits and vegetables should be washed and fed. 3. Additive feed: (1) vitamin feed. Use more cod liver oil, yeast, malt, cottonseed oil and so on. Cod liver oil is the main source of vitamin A and vitamin D and is used to feed cod liver oil at 800 to 1 000 international units per day. The feeding method is to drip the fish liver oil into the food bowl after eating. If liver and marine fish are fed all year round, cod liver oil is not necessary. Wheat sprouts are rich in vitamin E, and contain minerals such as phosphorus, calcium, manganese and a small amount of iron. They are an indispensable feed for fox reproduction. Foxes need enough vitamin C during pregnancy and lactation. This mainly comes from vegetables. If there is a lack of vitamin C, the mortality of young foxes is high. (2) Minerals add feed. Mainly calcium, phosphorus and sodium chloride, if calcium, phosphorus deficiency, young fox development blocked, susceptible to rickets. Therefore, it needs to supply its bone meal and salt all the year round. Especially in the breeding season, it is more important for mother foxes and bred foxes. Generally, it takes 10 to 15 grams of bone meal per day. Salt is necessary for animals to maintain normal physiological activities. Generally, it takes 2 to 3 grams per day. If seaweed fish is used as the main diet in the diet, no salt or salt is added to the diet. (3) Antibiotics add feed. It is mainly an antibiotic made from terramycin, which can play a role in inhibiting microorganisms and preventing some diseases. It can also promote growth and increase the survival rate of young foxes. (b) fox's diet fox's diet ratio there are two main methods, namely the ratio of heat and weight ratio. When preparing, the full price and freshness of the feed must be guaranteed. 1. Heat ratio method: This method is based on thermal energy. Determine the proportion of heat energy and the corresponding feed weight for each feed in each 0.42 megajoule heat energy, then calculate the total supply according to the total heat energy standard, and finally calculate the supply of protein. For trace additive feeds that do not have an energy value or a low energy value, they may be omitted and the supply amount is only calculated based on the number of feeds. 2. Weight ratio method: This method is based on the weight of the feed. That is, first determine the percentage of each feed in the total diet weight, then calculate the supply of various feed, and finally calculate the protein content of the diet to check the feasibility of the diet. This method is easy to calculate and easy to grasp, and is suitable for use in production fields and specialized households. It should be noted that there is no essential difference between these two methods. The actual verification is that the two can be mutually converted. The conversion ratio is approximately: when the animal feed heat law is 1, the gravimetric method is 0.8; the grain feed heat When the method is 1, the gravimetric method is 0.5; when the fruit and vegetable feed heat method is 1, the gravimetric method is 0.4. (College of Animal Science and Technology, Shandong Agricultural University, Post Code: 271018)

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Stanford developed a skin-like soft flexible electrode

Wearable devices more and more infiltrated into our lives, these smart devices can not do without the support of the circuit. However, if these close-fitting equipment, hiding a root rigid circuit, the comfort of using it will be greatly reduced.

Professor Bao Zhenan, a chemical engineer, is trying to change the situation. For this situation, the choice of flexible electrode is a very natural idea.

For over a decade, her lab has always wanted to make electronics softer and more flexible, just like the second layer of the human skin. They want brittle plastics to become more conductive and flexible.

Recently, Professor Bao Zhenan published their latest achievements in Science Progress magazine. The paper describes a brittle plastic that can be chemically bent to the same extent as a rubber band and slightly increased in conductivity. The result is a soft and flexible electrode that fits nicely with our soft, fragile nerves, meaning that such circuits are on our surface and the nerves of our skin do not feel uncomfortable.

Professor Bao Zheenan very excited about the results: This flexible electrode opens up many new possibilities, such as the brain interface (implantable electronics) other aspects of the brain interface.

According to the Xinhua News Agency, Bao Zhenan said in an interview that the existing electronic devices, including electrodes and materials, are hard. In measuring the CNS current and cardiac current, the electrodes implanted in the brain or heart may damage nerves or Heart tissue. Therefore, the electrodes in contact with the nerve need to be as soft as the skin, which is an important issue to be solved in flexible electronic applications.

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Slurry pump manufacturers cavitation phenomenon Shijiazhuang 天工 pump

Slurry pump manufacturers cavitation phenomenon Shijiazhuang Tiangong pump cavitation phenomenon Definition: During the pump operation, if the local pressure in the pump is lower than the saturation vapor pressure of the water at this temperature, the impurities in the water body, tiny solid particles, or Gaseous nuclei present in the gaps between the liquid and solid contact surfaces rapidly grow into macroscopic cavities which collapse when the water reaches the high pressure zone and is squeezed by the surrounding water. Cavitation generation, collapse process involves many physical and chemical phenomena, will produce noise, vibration, and flow components of the material erosion. This phenomenon is called the pump cavitation phenomenon. Saturated water vapor pressure refers to a certain water temperature boiling water when the steam pressure head, commonly used pa that water saturated steam pressure head (referred to as pressure head), the unit is m (Mh2O). Different water temperature saturated steam head pressure water table 2 water temperature /. C 0 5 10 20 30 40 50 60 70 80 90 100 Saturated steam pressure head hva / m 0.06 0.09 0.12 0.24 0.43 0.75 1.25 2.02 3.17 4.82 7.14 10.33 Harm of cavitation There are mainly three hazards in pump cavitation: Deterioration of pump performance Cavitation will produce a large number of cavitations, the water contains a large number of cavities destroyed the normal flow of water, so that the effective cross-sectional area of ​​the leaf slot decreases, the flow direction changes, the energy loss increases, causing the pump flow , Head and the rapid decline in efficiency, cavitation serious or even cut off. This performance change for different than the speed of the pump have different consequences, as shown in Figure 3. Centrifugal pumps at medium and low specific speeds have a long and narrow vane slot, and cavitation can have a significant effect on the performance of the pump. However, the axial flow pump with a high specific speed has a large vane slot and cavitation can not easily spread to the entire vane slot after cavitation. The performance curve slowed down so that there was no apparent breaking point. 2. Damage flow components data show that when the bubble is brought to the high pressure zone by the rapid condensation, collapse, the water particles at high speed to the bubble center impact, resulting in a strong impact, the impact of the pump shell and the pump Impeller wall, the moment of partial pressure, can reach tens to hundreds of megapascals, and the role of frequency up to 2-3 million times per minute. Pump wall in the repeated impact of high-intensity impact, the metal surface local deformation and hardening brittle, resulting in fatigue phenomenon, the metal rupture and spalling. In addition to mechanics, but also mixed with the living water from the gas (such as oxygen) to the metal chemical corrosion and electrochemical corrosion of water on the metal, etc., under the combined effect, the pump wall appears at first pitting, and then change Into a honeycomb. In severe cases, the wall will be broken down in a short period of time. 3. Generation of vibration and noise Cavitation occurs, with the collapse of the bubble burst of water particles between the impact of each other, as well as high-intensity impact on the pump shell and impeller repeated impact, the pump will produce vibration and strong noise. When the frequency of the cavitation vibration is close to the vibration frequency of the pump itself, resonance of the pump may be caused, thereby greatly increasing the amplitude of the vibration and causing the base and the foundation to vibrate and cause damage. Therefore, noise and vibration are also one of the main bases for judging whether cavitation occurs or disappears. The location of cavitation According to the different parts of the pump cavitation, cavitation can be divided into the following four categories: 1. Leaf cavitation is the cavitation occurs in the blade surface, mainly because of the pump installed too high, or flow deviation Cavitation produced when the design flow is too large. The formation and collapse of vacuoles occur mostly at the front, back or front inner surface of the blade. 2. Gap cavitation pump flow through the water suddenly narrowing the gap, the speed increases, the local pressure drop, will also produce cavitation. Such as the axial flow pump blade outer shell and the gap between the pump shell, centrifugal pump seal ring and the impeller inlet outer edge of the gap, due to the impeller inlet and outlet side of the pressure difference is large, resulting in high-speed reflux, resulting in local pressure Drop, causing gap cavitation. Vortex cavitation due to poor water collection pool, inflow or water pump design in non-design conditions may also be generated below the impeller vortex ribbon (bottom vortex), when the vortex center pressure Below the vapor pressure, the vortex becomes a cavitation band. Rough cavitation water flow through the pump within the bumpy inner wall and flow components, downstream of the protrusions are also prone to local negative pressure and lead to cavitation, the cavitation is called rough cavitation. The location of pump cavitation occurs as shown in Figure 5-2, Figure 5-3 and Figure 5-4. How to effectively reduce the phenomenon of cavitation 1, the installation of the pump height, the higher the pump installation height, the lower the pump inlet pressure, reducing the pump installation height can increase the pump inlet pressure. Therefore, a reasonable determination of the pump installation height to avoid pump cavitation. 2, pipette resistance, set in the pipette elbows, valves and other pipe fittings, the greater the resistance of the pipeline, the lower the inlet pressure of the pump. Therefore, try to reduce some of the unnecessary pipe fittings or as much as possible to increase the pipette diameter, reduce pipe resistance, can prevent pump cavitation. 3, the pump geometry, the liquid at the pump inlet with the kinetic energy and static pressure can be converted to each other, its value remains unchanged. When the inlet liquid flow velocity is high, the pressure is low, and when the flow velocity is low, the pressure is high. Therefore, the flow area of ​​the pump inlet is increased and the inlet velocity of the impeller is decreased. Pump cavitation can be prevented. 4, the density of liquid. Pumps with higher density deliver less height to the pump, and pump cavitation may occur when using larger, less densely packed pumps to deliver cavitations, but with a higher delivery density Large liquid pump to send less dense liquid, the pump inlet pressure is higher, does not produce cavitation. 5, the temperature of liquid transport. The saturated vapor pressure of the liquid increases as the temperature increases. When the inlet pressure of the pump is constant, the saturated vapor pressure of the liquid may rise to equal or exceed the inlet pressure of the pump as the temperature of the delivered liquid increases, and the pump will cavitate.

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Advanced ultra-resolution optical microscopy imaging has made a major breakthrough

Recently, researcher Zheng Wei of Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, in collaboration with Professor Hari Shroff of the National Institutes of Health, successfully developed a new two-photon excited super-resolution optical microscopy system that has both super-resolution optical microscopy And large depth 3D imaging capabilities to advance the depth of optical super-resolution imaging to record-breaking 250 microns, the corresponding research results published in the August 2017 issue of Adaptive optics improves multiphotonsuper-resolution imaging "Nature - Methodology" (Nature - Methods), Zheng Wei researcher is the article's first author and correspondent.

"Fine-looking" and "deep-looking" are the two major challenges in the field of optical microscopy. After decades of unremitting efforts by researchers, both in terms of "seeing the details" and "seeing the depth" A number of innovations have emerged and great successes have been achieved. However, optical microscopy imaging with both the ability to "see the details" and the "see the depth" is rare.

In this study, Zheng et al. Compared Two-Photon Microscopy (TPM) with deep biological tissue imaging capabilities and Instant Structured Light Microscopy (Instant Structured Light Microscopy) with super-resolution imaging , ISIM) organically combine to achieve two-photon excitation of super-resolution microscopic imaging. At the same time, the researchers successfully overcome the problem of wavefront phase distortion caused by biological tissues by using adaptive optics (AO) technology to finally achieve a horizontal resolution of 176 nm, a resolution of 729 nm and a resolution of 250 μm Depth of the imaging effect. Using this technique, high-resolution three-dimensional imaging of cells, nematode embryos and larvae, fruit fly brain slices and zebrafish embryos can be performed. The imaging results are significantly better than the traditional two-photon imaging. It is worth mentioning that, because the technology improves the photon utilization efficiency, thereby reducing the required laser power, the development of nematode embryos can be carried out for a long time, high-definition three-dimensional dynamic observation. It has no effect on nematode embryo development during up to one hour of continuous three-dimensional imaging, and this technique has an important role in embryonic development research.

The research was supported by the projects supported by the National Natural Science Foundation of China, the State Key Basic Research Development (973) Program and the Peacock Project of Shenzhen Overseas High-level Talents Innovation and Entrepreneurship.

The left panel shows the contrast between the results of two-photon imaging (2P WF), two-photon super-resolution imaging (2P ISIM) and two-photon super resolution (2P ISIM AO) combined with adaptive optics. In contrast to the three-dimensional imaging of cells located in the depth of 150 μm of collagen gel, the resolution of the new technology has been significantly improved both in horizontal and vertical directions. The lower right picture shows the three-dimensional observation of the nematode during embryonic development for 1 hour. The normal cell division process proves that the technology can be used for the dynamic research of embryonic development.

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GE Healthcare, Zebra Announces BLE Medical Asset Tracking Technology

GE Healthcare introduced the Encompass solution to help hospitals manage mobile asset inventories, reduce management costs and achieve better capital allocation. The program helps healthcare providers find critical mobile assets in real time, reducing the time to search for equipment and spend more time on patient care.

For more than 15 years, RTLS has helped hospitals improve the management of critical mobile clinical assets and save millions of dollars in capital and maintenance costs. The difficulty of deploying traditional RTLS solutions limits their popularity.

Encompass helps hospitals achieve better patient care, operational efficiency and financial performance. The system leverages the hospital's existing Wi-Fi network and BLE wireless technology. The system can be installed in a few days and can be deployed without having to open the ceiling or bury the cable in the wall. The company reported that the initial investment and installation costs for the system are 60% lower than those for cable RTLS solutions and do not require separate, dedicated field applications and database servers for maintenance.

The application can be provided as a subscription. The system can be retrofitted and expanded quickly, and can be configured quickly if the hospital layout is redesigned or reused. As a cloud-based application, the system can be connected by the Internet by any authorized worker.

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Heavy oil coal tar pump (ZYB) fault repair and use

1, we must first understand the ZYB heavy oil coal tar pump type, characteristics, the current situation. Understand the requirements, determine the repair target. Before testing, prepare for testing. 2, to determine the fault, diagnosed fault. Judgment, may save trouble. Confirmed to verify. 3, troubleshooting, first Jane after the complex, the first easy hard. Do not disassemble without demolition. To reduce the lack of special tools and improper operation caused by new damage, reduce the position changes and run-in time. In general, the splicing rotor is not removable, otherwise the form of tolerance can not be guaranteed, the rotor scrapped. 4, high pressure residue pump poisonous, corrosive pump, users should be invited to clean, and inform the necessary protective measures to protect the health of maintenance staff. 5, classification of the proposed fault is divided into operational failure and performance problems. Operation failure can include pump does not turn, pump temperature is too high, oil spills, oil spills, such as the maximum power exceeded. Performance failure can include the ultimate pressure, extreme pressure, suction efficiency, noise, fuel injection, gas town performance, etc. can not meet the requirements or not. 6, fault diagnosis and diagnostic examples (1) pump does not turn. Unidentified can not open the pump, so as not to aggravate the fault. Can be used to move hands and can not move. ① pump can move without turning. The reason can be coupling failure; belt slippage; motor wiring is wrong; motor damage; no power and so on. ② can not panic or plate up very heavy, the reason can be because the starting pump temperature is too low, the pump oil viscosity is too high; design and manufacture of pump stop too much oil. Too much oil caused by the pump back to too much oil (too much fuel, KCB-300 or oil vapor condensation in the pump, or in the exhaust pipe condensate oil back to the pump); foreign body in the pump ( (2) The pump (2) The pump (2) The pump (2) The pump Temperature is too high.Refers to the lowest measured near the exhaust valve exceeds the maximum oil temperature specified in the manual.As the pump temperature will make the pump oil viscosity dropped significantly and make the saturated vapor pressure of the pump oil increased so that the pump limit Pressure increase and suction efficiency decline; so that the rubber parts easy to aging; thermal expansion to reduce the running gap, in particular, the thickness of certain non-metallic rotary vane and copper sleeve hole clearance, affecting the reliability of pump operation. Pump temperature is too high The reasons may be the pump ambient temperature is too high, the intake air temperature is too high, the intake cooling device fails, the pump long-term continuous operation of the inlet pressure is too high; oil-cooled pump cooling oil is insufficient, poor circulation design effect of oil; Valve failure, etc. (3) Oil leakage can occur in the shaft Seal, fuel tank Pump parts sealing surface, drain plug, oil standard, oil hole bulkhead, stator parts and bearing through-hole connections Department, gas ballast valve (for example, 2X-8) and other parts. Gear pump kcb55 aging by the seal, Improper installation, damage to the failure, the surface is not flat, there are impurities, rough and loose castings, etc. If you stop the pump back to the oil, the oil will enter the gas town valve, the gas valve may not leak gas. To use oil-resistant rubber, according to the original design shape, the sealing surface is too large when the pressure will leak. (4) Oil leakage can occur in the pipe joints, oil cover boring cover plane, put the oil hole plug, oil drain valve (5) high power over standard. Can be long-term continuous for the inlet pressure is too high, the exhaust pressure is too high, debris into the occurrence of occlusion, pump temperature Too high, rotary vane, etc. with the gap is too small, the voltage is too high, too much pump back into the pump, etc., will cause damage to the motor should try to avoid long-term continuous operation in the vicinity of the maximum power.If there is sediment on the surface, Disassemble and remove. (6) The ultimate pressure is not up to standard External leakage, internal leakage, blockage of oil hole, poor quality of pump oil or deterioration of pollutions, condensable substances such as oil vapor, instrument distortion, abnormal pump operation, etc. When the leakage is large, the exhaust port can see white Steam. There are more bubbles at the oil mark, the hand can feel the exhaust pressure on the exhaust port. The low-level exhaust valve has more air bubbles on the surface. The power will increase .At this time, you should first check whether the air-ballast valve Off. Because the new pump factory in each of the pump measured the ultimate pressure, so if the leakage phenomenon, the pump port and piping, valves, containers one by one inspection. Outer shaft seal failure, the oil cup oil-free, bulkhead leak Gas leakage can also cause high pressure residue pump leakage can be caused by the pump movement gap, exhaust valve seat plane, the exhaust valve sealing surface, the inner shaft seal, pump cover plane, intake pipe, gas valve seals Wear, corrosion, bite will make the running gap increased.Oil blocking, open the fuel filler hole to listen, the pump noise will be lighter, in the case of a good seal, if the hand on the exhaust port has been sucked feeling, Exhaust valve may fail. If the pump oil is clean, long-term storage unused, can open the town valve to purify the pump oil vapor. If invalid, should check apricot meter. If the pump oil yellow and white has emulsified, the gas can be fully open the town, adjust the atmosphere to purify the operation, if necessary, the amount of gas into the pump port operation, can speed up the purification process. If other volatile gases or liquids are pumped, please change the oil in time and wash the oil tank if necessary. Some pumps, in the interstital airway will be deposited pump fluid, in order to obtain a good oil change effect, to find ways to drain the pump fluid. The ultimate pressure is measured using a seat compression oil silver vacuum gauge. Measured values ​​increase with a full pressure gauge such as a calibrated thermocouple gauge. Note the regulation of the thermocouple gauge to be paired. It is advisable to back up a calibration that is calibrated at the same time for comparison against any suspected contamination regulation. Increasing the ultimate pressure will reduce the pumping efficiency during high vacuum and the KC B gear pump will also raise the ultimate total pressure. Can refer to the above description to determine, check, deal with the decline in pumping efficiency and the ultimate pressure rise of the failure. (7) noise. Pump structure design, the motor and pump bearing noise, rotating pieces and other moving parts are smooth, too much oil into the fan, the noise generated by the transmission, a large intake, open air town operation, the oil pan and other pumps Loose parts, inequitable installation caused by vibration, will affect the pump noise. (8) fuel injection. To prevent the injection of fuel tank back to the oil hole size, location, sealing conditions, oil retaining plate design, installation, exhaust part of the mist reducer, oil cap, gas separator, the level of oil into the oil The size of the 2CY gear pump will affect the pump fuel injection, pump open air pumping, direct pump exhaust port of the air flow rate can be as high as 30m / s, blowing the oil surface, the pump circulating oil and airflow zone The oil will test the measures to prevent fuel injection.

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Do you have a child with dysmenorrhea? Listen and see what the experts say

Most women suffer from dysmenorrhea. How to treat dysmenorrhea? There are also many ways to treat dysmenorrhea, and we will hear people say, "Just give birth to a child. Just give birth to a child." Does it make sense to have a child treat dysmenorrhea? Let's take a look at what the experts say. ......

Do you have a child to treat dysmenorrhea?

To judge whether this is right or wrong, we must first understand the cause of dysmenorrhea. The causes of dysmenorrhea include cervical stenosis, uterine dysplasia, abnormal uterine position, gynecological diseases (especially endometriosis, adenomyosis), genetic factors, endocrine factors, and emotional factors. After giving birth, it will not be dysmenorrhea, and it needs to be discussed in separate situations.

If dysmenorrhea is due to stenosis of the cervix, excessive uterine dorsiflexion, or abnormal uterine development, menstrual bleeding and exfoliative endometrial debris are blocked when the menstrual flow out of the menstrual flow. This is a primary dysmenorrhea. Such dysmenorrhea is common in adolescent girls and generally occurs during menarche and later. During pregnancy, the uterus grows with the growth of the fetus, and the cervix becomes soft, creating conditions for the birth of the fetus. During childbirth, the fetus passes through the cervix and plays a role in dilating and narrowing the cervix. At the same time, it also improves the position of the uterus, such as excessive tilting, to some extent. After the childbirth, the cervix becomes loose and the uterine position is partially corrected. The passage through the blood becomes smooth, which makes the menstrual blood and the exfoliated endometrium easier to excrete, so the dysmenorrhea will be relieved or even disappear.

However, dysmenorrhea caused by certain gynecological diseases (especially endometriosis, adenomyosis) is in need of treatment. Some patients even need surgery, and children cannot solve dysmenorrhea in such patients.

In addition, due to dysmenorrhea caused by emotional, genetic or other comprehensive factors, it is difficult to improve symptoms after birth.

Therefore, the dysmenorrhea of ​​female friends can not just wait for marriage and childbirth, but should go to the hospital obstetrics and gynecology department to ask the doctor to fully examine it, because of the treatment.

In addition, there are arguments that the "secondary disease" left by the two children when they are able to cure a single child is not scientific. For some mothers who are physically weak after childbirth, their monthly immunity and immunity are enhanced after adequate rest and nutritional supplements. The symptoms of some diseases can indeed be alleviated, but this is not because of the cure for confinement. But taking advantage of the chance of sitting confinement, if the original condition is more complex or more serious, it is not possible to “sit” by simply sitting on a confinement.

Therefore, if the problems left over from “confinement” are not completely resolved, we must actively treat and adjust them, and do not wait until the birth of a child. First of all, physical discomfort is very unfavorable for gestating the fetus; secondly, even if you are a child or a child, if you are not scientifically nursed back to health, your body cannot be fully recovered. therefore. After maternal delivery, attention should be paid to all aspects of nursed back to health, to avoid the occurrence of "meridian disease."

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Spring pump screw assembly matters needing attention 1, the assembly should be carefully cleaned screw parts, inspection, damaged parts should be replaced. 2, the drive shaft twenty thousand joints to the assembly, the seal should be checked for damage, the cavity filled with grease. 3, the correct installation of bearings so that the shaft rotation flexible, no jamming phenomenon. 4, shaft seal installation: packing culvert installation, should use the packing gland tight bolt position in the shell installation window, easy to adjust the bolt wrench. 5, the body pressed tight, tighten the nut should be uniform. 6, mechanical seal installation should be careful, friction deputy face should be clean and coated with grease. 7, when installing the stator, smear the rotor with a lubricant, the stator cavity surface, is conducive to the stator installation. 8, installation and assembly, the coupling installation deviation: △ γ ≤ 0.2mm, △ α ≤ 30. Chun Da screw pump disassembly steps 1, screw pump and motor from the emptying medium (to prevent the motor, toxic media wounding) 2, remove the screw pump body. 3, remove the screw pump stator, if necessary, according to the axis of the pump shaft for auxiliary. 4, remove the rotor and the middle shaft. 5, remove the drive shaft and shaft seal. 6, long-term without the screw pump, to make anti-rust treatment, the method is to use non-painted metal surface smear rust, including the shaft surface, packing housing cavity, and lubrication.

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Tianjin Sinotrans International Logistics Development Co., Ltd. shortens the time by using radio frequency identification technology

Tianjin Sinotrans International Logistics Development Co., Ltd. to adapt to the "Belt and Road" construction, the radio frequency identification technology (RFID) applied to import goods port customs supervision warehouse, with only four staff operations, daily access to warehouses to reach 300 tons of goods, imported to the plant The time has also been reduced from the past week to 24 hours.

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Nutritional parts of fish

People are not satisfied with only eating fish, and fish brain, fish lips, fish eyes, fish scales, and fish are all favored. Can you know how much nutrition these things have? Below, I will give you a detailed explanation.

1. Eat nutrition: fish, fish brain

Fish is rich in high-quality protein, easy to digest and absorb; low fat content, low heating energy; also contains calcium, phosphorus, potassium, iodine, zinc, selenium and other inorganic salts, as well as vitamin A, vitamin D and B vitamins. The muscles of fish have dark meat and white meat. Dark meat contains more lipids, glycogen, vitamins, enzymes, and so on. The taste is more ambiguous. Generally, the activity of tuna, mackerel, sardines and other dark meat are more active. ; Silver carp, large yellow croaker, flatfish, etc. are more white meat, lighter flavor.

Fish brain is rich in commonly known as "brain gold" polyunsaturated fatty acids DHA, as well as phospholipids, to help infant brain development, and also have a role in the adjuvant treatment of Alzheimer's disease. However, the brain cholesterol content of fish is high and food intake should be controlled.

2. Eat beauty, eat taste: fish gizzard (fish belly)

Fish bladder contains biological macromolecule collagen protein, which can improve the nutritional status of the tissue, promote growth and delay skin aging. Food fish maw was recorded in "Qi Min Yao Shu" more than 1600 years ago. It is said to be famous as a bird's nest and shark's fin. It is known as the reputation of marine ginseng and is an ideal high-protein and low-fat food. Sea fish have a thicker wall, usually made of dried fish, called a fish belly. The dishes made of fish belly are smooth, delicate and full of texture.

Chen Yusheng said that before eating, fish maw must be soaked in advance. There are two methods, oil and water. The thick fish maw can be made in two ways. The thin fish belly is better. The oil should be kept at a low temperature. When the fish belly is deep-fried and the hand is broken, it can be removed when the cross-section is sponge-like. Pour boiling water, so that it will be softened by immersing it, squeezed out of water, cut into different shapes as needed, and then rinsed with warm water and washed.

3. Eating novelty, eating fun: fish scales, fish eyes, fish lips

Wang Yi said that scales contain choline, which can enhance memory. It also contains a variety of unsaturated fatty acids, which have a certain effect on the prevention and treatment of arteriosclerosis, hypertension and heart disease, and can be used as frozen fish. In addition, Chen Yusheng said that the fish scales of squid and squid have a certain amount of lipids and umami components. They can also be steamed without cooking food, and when they are eaten, they can sip juice and take a little bit of collagen. The fish scales contain 6-thioguanine, an anti-cancer drug, which is of high value and does not have to be shaved when eating.

The fish's lips are mostly made from the skin and associated tissues of the upper lip of squid, shark and squid. The main components are also collagen. It is also one of the eight treasures of seafood, but it is actually not much nutrition. The content of vitamin B1 and DHA in the fish eye is slightly higher, but due to the small amount of fish eyes, the nutritional value is small. There are also fish tails and fish bones. The fish tail is a piece of fish in the tail of the fish. The nutrition is similar to that of the fish body. The fish bone does have the effect of calcium supplementation, but in general, people eat very little, and the shark's fish bone can do. Fish bone meal.

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German researchers use laser pulses to remove weeds

The robot automatically recognizes weeds in the farmland and "wrestles" with short laser pulses. For sustainable agriculture wherever possible to avoid herbicides, or can benefit from this clever idea.

In fact, Dr. Julio Pastrana and Dr. Tim Wigbels of the Institute of Geodesy and Geography, University of Bonn, Germany, are doing the research. In this context, the German Federal Ministry of Economic Affairs and Energy launched the EXIST Business Plan, which is devoted to promoting the development of such farmland utility tools.

There is a strong need for people who want to harvest goodies to repel weeds because only such crops can grow better. In organic agriculture, herbicides are excluded because they are considered toxic chemicals. So for unwanted plants, people can only work hard on themselves. If the success of Pastrana and Wigbels weeding robots is expected, this time-consuming activity is expected to soon be replaced by robots.

In the Photogrammetry Laboratory at the Institute of Geodesy and Geographic Information at the University of Bonn, computer experts are developing a new system: the use of precision video cameras in all-terrain robot cars or tractors, unwanted weeds in a variety of ways Of the crop is automatically identified, and through targeted prevention and treatment.

"The robot's short pulse of light impinging on the leaves of the weeds to be removed will result in weaker vitality," Pastrana said. "So it is not long before we eliminate the need to use pesticides in the fields. The environment will be protected. "

Prior to this project, Pastrana's work focused on robotics and automated imaging and processing techniques, and later on engaged in statistical models to help detect and classify weeds. He and other colleagues have been developing laser weeding robots for a year now and are looking for investors and hope for further business start-ups.

Before in the United States, weeding robots had been used to clear leaves at railroads and airport runways but were not put on farm because it was easy to see green crops as weeds. Weeding robots should learn to judge whether the plants in the farmland are needed or not based on the color, shape and size of the leaves.

Herbicides, developed by researchers, carry herbicides, but can reduce the amount of herbicides used by precise positioning; some robots use mechanical weeding or smash them with mini weed crushers. Pastrana and Wigbels are hoping for short laser pulses. This still needs further research. "This is a case in point where the idea of ​​an innovative robot is linked to the current sustainability story." Rüdiger Wolf, a consultant for achievements conversion, commented that researchers' analysis of the market and the commercial competition for the project sounds pretty good. Pastrana believes there are many benefits of laser-based new technologies in agricultural machinery, "and our goal is to contribute to more sustainable agriculture."

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How to maintain the heat transfer oil pump

Thermal oil pump maintenance, the pump shaft is provided with a stuffing box in the front end, the sealing function can be more reliable, and a mechanical seal is provided in the bearing seat, so a large number of leaks can not be thrown up while a small amount of leakage can be discharged through the leaky spout receive. A small amount of leakage is normal at the beginning of the operation, and the leakage will be reduced or stopped after running through the sealing surface for a certain period of time. The heat transferred to the pump cover and the bearing by the transmission medium is dissipated by the pump cover and the bearing seat, Housing temperature to adapt to the temperature of the shaft sealing function.Therefore, the choice of pump installation position, to make the pump cover and bearing seat of the heat to facilitate diffusion, does not cause any heat accumulation phenomenon. There are two ball bearings in the bearing housing. One ball bearing on the pump impeller side is lubricated by the heat-conducting oil. One ball bearing on the coupling side is lubricated with high-temperature grease. Each ball bearing is operated for 300 hours Must be removed after cleaning with diesel to check the contact surface is damaged, if damaged, you must replace the bearings by the impeller side of the ball bearing installation, the side of the dust cover to the impeller installation, boot before injection Thermal grease lubrication. Coupling side of the ball bearings, with complex calcium-based high-temperature grease (ZFG-4), the re-install the bearing, the dust cover side also toward the impeller side installation, installation, filling lubrication Grease (about 1/2 ball bearings and shell space) .In the operation of the bearings 48 hours after the grease gun to the bearing cap on the injection of oil injection into the additional grease.Do not use the input pipe gate valve to regulate the flow, Avoid gas production anger. Pump should not be less than 30% of the design flow continuous operation, if necessary under the premise of operation, it should be installed in the bypass bypass pipe, and the flow to reach the above minimum. Always check the looseness of the anchor bolts, pump casing temperature and into the temperature is consistent, the export pressure gauge fluctuations and vibration of the pump. Pay attention to whether there is no noise pump operation, such as the pilot state is found to be promptly processed. Cut off the power supply. The pump liquid vent, cleaning and should be on schedule to rotate the impeller 180 ℃ to prevent shaft deformation until the pump body completely cooled so far.

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Pregnancy recipes should eat these summer

Pregnancy diet is not only important for the mother's health, but also important for the fetus's growth and development. What are the recipes for pregnant women? Hurry up with the nutrition Xiaobian every day to see it.

Recommended for pregnant women recipes: these should be eaten in summer

1, liver salad cucumber slices

Raw materials: 200 grams of cucumber, 150 grams of cooked liver, 50 grams of coriander, 25 grams of dried rice. Soy sauce, vinegar, salt, monosodium glutamate, and pepper oil

practice:

(1) Wash the cucumber and slice it. The liver of the cooked pig is cut into slices and placed on the cucumber.

(2) Parsley is washed and cut into the growth segment and sprinkled on the liver slices.

(3) In the end, pour the dried rice with boiling water into the pot, mix the seasoning and pour it on the melon slices and liver slices.

2, cabbage soup

Raw materials: Chinese cabbage heart 500 grams, milk 50 grams, 5 grams of salt, chicken soup 150 grams, a little wet starch, cooking oil, chicken oil a little different.

practice:

(1) Wash the cabbage and cut it into strips, put it in water, cook it, remove it, and control the moisture.

(2) Add hot oil to the pan, add chicken soup, then add salt and cabbage, and put it in milk for a minute or two. After the boil, add the starch, topped with chicken fat, and place it in the dish.

3, tofu skin porridge

Ingredients: 2 tofu skins, 10 grams of glutinous rice, 150 grams of rock sugar, 1000 grams of clear water

practice:

(1) Wash the bean curd skin and cut it into small pieces. Wash the pot with glutinous rice and clean it. Add water to the boiled water and add it to the skin of the tofu, rock sugar and simmer over low heat.

4, Amomum carp soup

Raw materials: Amomum 3 grams, a number of fresh squid.

practice:

(1) Fresh squid goes to the scales and removes the viscera, and the viscera is washed. The Amomum esculentus is placed in the fish's abdomen and thrown into the pot (the best in the casserole). Add the appropriate amount of water to boil. After boiling the pot, add ginger, onion, and salt to serve.

During pregnancy, pregnant mothers should pay more attention to pregnancy symptoms, so that when they encounter adverse situations, they can respond in time to maintain the health of you and your baby.

1, Chenpi braised beef

Raw materials: lean beef, soy sauce, dried tangerine peel, onion, ginger, sugar, soy sauce, water (2 tablespoons).

practice:

(1) The dried tangerine peel is slightly soaked in water and the onions are washed and cut off; the beef is washed and cut into thin slices and soaked in soy sauce and marinated for 10 minutes;

(2) Put a piece of marinated beef in hot oil, and fry it until it is slightly dry. Add soy sauce, sugar, water, and beef to fry it when the dried tangerine peel, onion, and ginger are cooked.

(3) Remove the beef and put it in a marinated mixture of dried tangerine peel, onion, ginger, soy sauce, and sugar. Stew until the marinade dries to serve.

Nutrition Tips: Lean meat is rich in B vitamins, which can help reduce vomiting symptoms in early pregnancy and reduce mental fatigue and other discomfort. Ginger and orange peel also help to reduce the nausea of ​​Mommy.

2, coconut milk paste

Raw materials: 1 cup of coconut milk, 2 cups of fresh milk, 200 grams of sugar, 5 tablespoons of chestnut flour, 3 red dates, and 3 cups of fresh water.

practice:

(1) The jujube will be enucleated and the coconut milk and chestnut powder will be slurried.

(2) Boil the sugar, fresh milk, and red dates together and slowly add the chestnut syrup.

(3) Stir in a paste until it is open, then put it into a bowl and eat it.

Nutrition Tips: Morning sickness often affects the absorption of nutrients from pregnant Mommy, and protein-rich and high-calorie coconut milk paste can help pregnant mommy to absorb nutrients.

1, shrimp fried leeks

Raw materials: 250 grams of leeks, 150 grams of fresh shrimp, 150 grams of sesame oil, and 3 grams of salt.

practice:

(1) Wash the leeks and cut into sections of 3 cm in length. Fresh shrimps are peeled off, washed, and scallions are cut into slices and ginger slices.

(2) Heat the boiled water and put it in the boiled vegetable oil to boil the boiled water. Then add the shrimp and leeks and cook the rice wine. Continuously fry until the shrimp is cooked thoroughly.

Features: Clear fragrance, nourishing blood.

2. Oyster porridge

Raw materials: 100 grams of fresh oyster meat, 100 grams of glutinous rice, 50 grams of garlic, 50 grams of pork belly, 10 grams of cooking wine, 25 grams of onion, pepper 1.5 grams, 10 grams of refined salt, 2.5 grams of cooked lard, 1500 grams of clear water.

practice:

(1) Wash the glutinous rice with a clean spare, clean the fresh oyster meat, and cut the pork belly into filaments.

(2) Add glutinous rice to the pot and add water to boil. Add rice, pork, oyster meat, cooking wine, salt, and lard to the rice until it is in full bloom. Boil together to form porridge. Add garlic, onion, and pepper to mix.

Characteristics: Oyster meat tastes delicious, is an excellent nutritious food, eat oysters into porridge, is a popular snack food in the south coast. The smell of oysters is flat and slightly cold and can be used medicinally. Oyster porridge has a certain effect on the symptoms caused by vitamin D deficiency.

3, spinach fried tofu

Raw materials: 500 grams of spinach, 3 pieces of tofu, vegetable oil, soy sauce, sugar, monosodium glutamate, and salt.

Method: Heat the pan, add slices of tofu into the pan on both sides of the fried yellow, add the ingredients to burn 1 to 2 minutes, then add spinach.

Features: delicious color, contains a lot of vitamins.

Recommended for pregnant women recipes: eat during the third trimester and replenish your baby's nutrition

1, white fungus

Material: 250 grams of white water, water, edible fungus 100 grams. 3 grams of salt, monosodium glutamate, pepper 1 g, fresh soup 20 grams, 10 grams of starch, 5 grams of soaked pepper, garlic, ginger 10 grams, 15 grams of green onion.

practice:

(1) Wash and cut into thin slices of 4 cm in length, and wash the fungus.

(2) Convert salt, pepper, monosodium glutamate, fresh soup, and starch to salty squid juice, and pepper and green onion are cut into horse ears.

(3) After the oil is boiled hot, soak the minced pepper, ginger, and saute garlic. Then put in the white flakes and fry the fungus until it breaks. Add chopped green onion and salty oyster sauce until the material matures. Serve.

Efficacy: Fungus is blood, buck quality goods, especially for high blood pressure pregnant women eat.

2, melon seafood roll

Ingredients: 500 grams of wax gourd, 180 grams of fresh shrimp, 25 grams of ham, mushrooms, celery, carrots, water, starch, salt, monosodium glutamate, sugar, and the amount.

practice:

(1) Wash and cut thin slices of wax gourd, and rinse with fresh shrimp.

(2) Wash ham, mushrooms, celery, carrots and cut into pieces.

(3) The melon slices are heated with boiling water.

(4) Heat the shrimp rind, carrot stick, celery stick and mushroom strips in boiling water.

(5) Combine all the ingredients except winter melon into salt, monosodium glutamate and white sugar, wrap them into rolls in the melon slices, brush with cooking oil, and steam them on cages to remove and place the dishes. You can.

3, winter mushrooms burning cabbage

Materials: 200 grams of Chinese cabbage, 3 grams of shiitake mushrooms (dried), 5 grams of salt, 10 grams of lard (refining), 1 g of monosodium glutamate.

practice:

(1) Wash the mushrooms with warm water and stalks. Wash cabbage and cut into 3.5 cm sections.

(2) Heat the oil and put the cabbage until it is half-cooked.

(3) Add salt, mushrooms, and monosodium glutamate, add some broth or water, and cover with a lid to roast and serve.

Efficacy: This product is rich in calcium, phosphorus, iron, niacin, vitamin C, both home-style vegetarian dishes, but also particularly suitable for pregnant women, nursing mothers. Cabbage: Cabbage has a high nutritional value, rich in a variety of vitamins and minerals, especially vitamin C and calcium, dietary fiber content is very rich. Mushrooms (dry): Mushrooms have high protein, low fat, polysaccharides, a variety of amino acids and a variety of vitamins nutrition recommended late pregnancy diet recipes, can enhance the body's ability to resist disease.

Concluding remarks: The above is the recipe for pregnant women recommended by parents for daily nutrition Xiaobian for pregnant mothers today. During the three stages of pregnancy, the nutritional needs of each stage are different. The expectant mothers must go to the hospital in time for examination, according to the doctor's advice. Make dietary adjustments to ensure your baby's health and your health. (Limi Li)

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Sensor technology to help safe driving car security needs will not be reduced

With the promotion of the three major driving forces of the market, technology and policy, the sensor industry in our country ushers in a new opportunity for development. Government, regulatory agencies and consumers are increasingly demanding on the safety of driver assistance systems. Central to meeting these high security requirements is sensors, electronics and software.

As early as 2019, the U.S. National Highway Traffic Safety Administration, a unit of the U.S. Department of Transportation, will incorporate Advanced Driver Assistance Systems (ADAS) into the new car safety rating system. In contrast, European safety regulators are scheduled to begin in 2018. Such car safety evaluation system will promote the rapid development of automotive safety technology.

This is not just about driving your car safely or easily. The government and consumer targets also include fewer road accidents, lower insurance surcharges and better car fuel economy. The combination of mechanical systems and software and electronics has also benefited many automotive component suppliers, especially MEMS sensors, which can be used in a much more limited space.

Market research firm IHS Markit expects the market size to be $ 2.8 billion in 2016 and a CAGR of 6.9% for automotive applications in the MEMS market between 2015 and 2022, rising to 3.2 billion U.S. dollars in 2022.

Over the past few years, MEMS sensors have gained a stable market in mandatory safety systems, such as electronic stability control and tire pressure monitoring systems, which have gained popularity among new vehicles during 2015. Benefit MEMS suppliers include gyroscopes, pressure sensors, accelerometers and front and side airbag sensors. In addition, MEMS devices for automotive engine applications are also steadily growing mainly from the growing use of engine management and exhaust gas treatment. According to the company's consulting message, MEMS shipments in these areas will reach 1.34 billion by 2019, up from 1.08 billion in 2013.

MEMS Applications in ADAS

Just take a look at the annual MEMS and Sensors Executive Congress, you can get a glimpse of MEMS applications in the field of ADAS. For example, at the 2015 conference, Jeff Owens, Delphi's executive vice president and chief technology officer, shared a 3,800-mile stretch of Delphi-equipped ADAS systems across the Atlantic to the Pacific Ocean Autopilot experience. The journey lasted nine days and crossed the 15 states of the United States using 20 active safety sensors plus GPS, navigation, vision systems and driver status monitoring systems. Throughout the process, 99% of the journey was fully automated and produced 3 T worth of valuable data.

The future of the car will include a variety of MEMS devices, bringing opportunities and challenges to the MEMS industry and the supply chain.

At the 2016 MEMS and Sensor Summit, Jari Honkanen spoke about MicroVision's automotive technology that uses HUD to project important information onto the windshield of a car. With this technology, the driver can see the important information without having to leave the road. Honkanen also demonstrated how MicroVision's laser beam scanning technology, near-infrared lasers and infrared detectors are applied to MEMS-based scanning LIDAR systems.

The application of MEMS technology enables the scanning LIDAR system to be dynamically changed depending on the application or driving situation. It has a high level of vertical and horizontal resolution, compared to the previous LIDAR system, it can capture low-speed high-speed or low-resolution high-resolution data. Next, this technical concept can also be applied to ADAS applications such as blind spot monitoring and parking assistance systems.

The ADAS head-up display system's application of MEMS technology helps drivers reduce or eliminate distractions and improve safety. It can also be used to display important information and real-time alerts.

When asked what role MEMS will play in future cars, Jérémie Bouchaud, director and senior chief analyst, MEMS and sensor business unit at IHS Markit, predicts it will be "green, safe and interesting." In addition, the car will be electrically powered and rely heavily on sensors for automatic cruise, he added.

"As the components change with the new electrical architecture, the electrified cars will depend on the sensor accordingly, and the more advanced HMIs will have the support of virtual reality and noise reduction with head-up display support, which will also benefit MEMS manufacturers. Bouchaud further explained.

future

Demand for safety and security in automotive applications will not decline, and continued pursuit of these applications will continue to drive the demand for automotive MEMS sensors. The biggest beneficiaries of automotive MEMS sensor applications will be electronic components, component manufacturers and, of course, end users.

The automotive MEMS sensor market includes not only ADAS, but also electronic stability control, electronic control units, heating and HVAC systems, safety and security, car navigation, camera stabilization systems, in-car microphones, tire pressure monitoring, automotive engine management systems , Fuel injection system, seat monitoring system, peripheral pressure sensors and oil pressure sensing.

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Traditional retail industry engaged in RFID technology?

The improvement and application of radar gave birth to the radio frequency identification technology. In 1948, the theoretical foundation of radio frequency identification technology was laid. The theory of radio frequency identification technology has been enriched and improved. Single-chip electronic tags, multi-electronic tag reading, wireless read-write, passive electronic tags for long-distance identification, to adapt to high-speed moving objects radio frequency identification technology and products is becoming a reality and to the application.

Traditional retail industry engaged in RFID technology

Inventory visualization

Inventory visualization refers to a management objective that provides complete real-time visibility into inventory status. This concept evolved from Toyota's Kanban management and has now become an indispensable cornerstone of lean management across all industries. The existence of RFID technology to make this concept in the retail industry has become a reality.

RFID technology with non-contact read, batch processing and other features, can greatly improve the inventory of inventory efficiency. According to statistics, the traditional manual manual counting method can handle an average of 200 pieces of goods per hour. After using RFID technology, the figure is increased to 14,000 pieces / hour, and the efficiency is improved by 70 times. The error and repetition are greatly reduced, and the accuracy is also obtained Great upgrade. As a result, the store can regularly frequent inventory or set up in the store several fixed RFID reader way, real-time inventory of goods in the store to eliminate the chance of loss due to out of stock. At the same time, the time it takes for the clerk to inventory the goods can also be significantly reduced, giving them more time to receive their customers.

RFID can also bring a lot of improvements to the stock shortage that is prevalent in the retail industry. Research at the Harvard Business School shows that 8% of the retail industry is out of stock for a long period of time, causing an annual loss of just over $ 69 billion in the United States. According to KurtSalmon's speculation, in the size and color of a wide range of retail apparel, the extent of stockouts may be even more serious, or even up to 15 to 20%. ABIResearch company's survey shows that such as the introduction of RFID technology can be predicted in advance may be out of stock category to remind shop timely and appropriate replenishment of the shop and warehouse inventory, stock rate of 60 to 80% lower, resulting in sales growth May reach 3 ~ 10% (according to the substitutability of the goods to float). Europe's world-renowned fashion brand stores across the board into the RFID technology, the shop out of stock problem has been fundamentally resolved, an average of each store sales increased by 4%, the annual sales of 2.5 billion US dollars to achieve growth.

In addition to addressing storefront outages, RFID can also help increase the product's average unit retail price (AUR). The traditional store management can not frequently inventory the goods, resulting in a large number of goods stacked in the warehouse did not even have access to the sales process. According to survey data, nearly 30% of the goods in the apparel industry are not "discovered" until the clearance sale, which is a tremendous waste. If this part of the goods can be properly replenished when out of stock, the average unit retail price will increase 3 ~ 5%.

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The first high-power clad fiber laser in China's laser remanufacturing industry is available

Fiber lasers as emerging laser technology, more and more people accepted, fully demonstrated the competitiveness of fiber lasers. In the next period of time, fiber lasers will become the mainstream voice in the field of lasers and become a must for major laser enterprises.

June 15, science and technology personnel using the new 4000W cladding fiber laser for high melting point metal laser cladding test. Xi'an, Shaanxi, China and the United States Clad Laser Co., Ltd. The first laser fiber laser technology successfully used in high - power cladding laser research and development and production, after 3 years of technological research and product development, introduced China 's laser remanufacturing industry first 4000W Power cladding fiber laser products, which not only expand the fiber laser applications, but also for the laser cladding industry introduced a new laser category.

Fiber laser is known as the third generation of the most advanced industrial processing lasers, but also the world's efforts to develop high-end lasers. Its localization and industrialization will greatly enhance the research and development of high-end lasers in China and provide "China Heart" for high-power CNC laser processing equipment in our country, which will greatly promote the development of laser processing industry in China. At the current stage, we have made some achievements, but there is still a long way to go in terms of the industrialization of fiber lasers and the leading foreign countries.

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MASCOT ENTERPRISE LTD , https://www.green-mascot.com

Explain the meaning of sewage pump

Sewage pump the use of: ① corporate wastewater discharge. ② urban sewage treatment plant discharge system. ③ subway, basement, air defense system drainage station. ④ hospitals, hotels, high-rise building sewage discharge. ⑤ residential sewage drainage station. ⑥ municipal engineering, construction sites in the discharge of slurry. ⑦ water plant water supply device. ⑧ farm wastewater discharge and rural farmland irrigation. ⑨ exploration of mining and water treatment equipment package. ⑩ instead of shoulder picking people, to send the river mud. Sewage pump features ① The use of a unique single-leaf or double-vane impeller structure, greatly improving the ability of sewage through the pump diameter can be effectively 5 times the fiber material and the diameter of the pump diameter of about 50% of the solid particles. ② mechanical seal with a new type of hard and decay resistant tungsten carbide material, while the seal improved double seal, so that it is long-term oil chamber operation, the pump safe and continuous operation of more than 8000 hours. ③ The overall structure is compact, small size, small noise, significant energy-saving effect, easy maintenance, without the need to build pump room, dive into the water to work, greatly reducing project costs. ④ The pump seal oil chamber is equipped with high-precision anti-interference leakage detection sensor, and stator windings embedded in the thermal components, absolute protection of the pump motor. ⑤ According to user needs with automatic safety control cabinet, the pump leakage, leakage, overload and over-temperature protection, etc., to improve product safety and reliability. ⑥ float switch can be based on changes in liquid required to automatically control the pump start and stop, without special care, the use of extremely convenient. ⑦ According to user needs with dual rail automatic coupling installation system, which brings great convenience to installation and maintenance, people do not have to enter the sewage pit for this purpose. ⑧ can be used in the whole range, and to ensure that the motor will not be overloaded. ⑨ There are two different installation methods, fixed automatic coupling installation system, mobile free installation system. Sewage pump in the structure and performance of self-priming sewage pump, draw lessons from the advantages of similar products at home and abroad, and in many ways to absorb the user's requirements and provide improved advice, developed from the self-absorption and sewage in one, namely Like ordinary water self-priming pump does not need safety valve, do not lead irrigation, but also suction containing large solid block, long fiber dirt, sediment, waste ore impurities, excrement disposal and all engineering sewage and plastic Quality liquid; sewage pump According to the different ways of sewage, sewage pump can be divided into self-priming sewage pump, liquid sewage pump, with a knife-type sewage pump and automatic mixing sewage pump. It is widely used in mines, papermaking, printing and dyeing, environmental protection, oil refining, petroleum, chemical industry, farm, dyeing because of its characteristics of conveying liquids containing hard solids, fibrous materials and especially dirty, sticky and slippery liquids , Brewery, food, fertilizer, coking plant, construction, marble factory, mud, quicksand, mud ponds, sewage ponds, dirty liquid to send thick liquid, filling and suspended matters in the sewage treatment. Sewage Pump Selection and Maintenance: The most critical issue for sewage pumps is the reliability issue, because the medium that needs to be transported is a mixture of liquids containing solid materials. This problem makes the sewage pump in the seal, the motor carrying capacity, bearing arrangement and Selection and other requirements than the average pump to be high, so the selection, we must understand clearly the sealing pump reliability and carrying capacity.

Boron Nitrate

Boron Nitrate,Boron Fertilizer,Calcium Boron Fertilizer,Boron Nitrogen Fertilizer

SHANXI HUAXIN FERTILIZER CORP. , https://www.sxhuaxingroup.com

Dry goods! CFB boiler best desulfurization method full resolution

"The published air quality monitoring results are up to standard and why are gray and blue skies not visible?" This widespread question not only reflects the worsening haze problem, but also shows the deviation between environmental governance and actual results. And this problem, with a large number of thermal power units flue gas desulfurization process using electric field less than the number of ESP + wet desulfurization (without GGH) is not unrelated.

The circulating fluidized bed (CFB) boiler technology is a highly efficient and low-pollution clean combustion technique developed rapidly in recent ten years. As an environment-friendly boiler, CFB boiler can inject some limestone to achieve certain efficiency of dry desulfurization in the furnace. Desulfurization efficiency in the furnace is generally 60% ~ 90% (depending on the Ca / S and boiler structure) between. Due to the fuel characteristics of CFB boilers, however, further flue gas desulfurization must be carried out behind the furnace in some CFB boilers that burn high-sulfur fuels or where SO2 emission standards are stringent.

The author compares the traditional wet desulfurization process (calcium method, magnesium method, ammonia method) and circulating fluidized bed dry desulfurization process, in order to obtain the most suitable CFB boiler flue gas desulfurization methods.

CFB boiler flue gas desulfurization efficiency of the traditional route, the general is the flue gas through the bag filter (or electrostatic precipitator) after the dust, and then by-pass into the wet FGD flue gas desulfurization.

Due to the high concentration of dust in CFB boiler flue gas and the high specific resistance of soot after desulfurization in the furnace, Therefore, the traditional CFB boiler flue gas dust removal generally take the package bag filter program. After the traditional dust removal desulfurization process, what are the problems?

① incomplete reaction of the boiler discharge soot CaO can not be comprehensive utilization, resulting in waste of resources. Free CaO also seriously affected the comprehensive utilization of CFB boiler ash, resulting in greater waste.

② serious corrosion.

③ wet FGD chimney overall costly. In recent years, the wet desulfurization plant tends to adopt wet chimney direct discharge technology, chimney barrel special anti-corrosion treatment, using more titanium-steel composite plate inner tube process, resulting in the overall cost of the chimney greatly increased.

④ serious scaling.

⑤ cancel the bypass, the use of tandem wet FGD process program, will host unit operating rate to bring a severe test.

Relevant regulations have been promulgated by the state environmental protection department, which require that the flue gas desulfurization unit of the newly-built unit should no longer be provided with a bypass flue. The built unit has already set up a desulfurization device by-pass, and a lead seal must be installed by-pass. Therefore, when the wet FGD device outages, the crew must be out of service. Due to corrosion and scaling and other reasons, the high failure rate of the wet desulfurization process (calcium method, magnesium method, ammonia method) means that the unit adopting the wet desulfurization process should often be stopped due to the failure of the desulfurization device, the loss will be very much serious.

⑥ desulfurization system can not respond quickly to changes in boiler load operation.

Limestone - gypsum wet desulfurization process start and stop more troublesome, longer time, the corresponding boiler load can not be quickly changed, but also in the system is not put into operation must be maintained.

⑦ wet FGD chimney discharge of "gypsum rain," seriously affecting the quality of the surrounding environment.

⑧ desulfurization process produces fine particulate concentration, wastewater "double" by-product contamination, especially the adsorption of fine particles of heavy metals Hg, will have greater harm to human health.

CFB boiler supporting the use of circulating fluidized bed dry desulfurization + bag filter flue gas desulfurization dust integrated new technology program, the direct use of CFB boiler "calcium-rich ash," "after the first desulfurization dust" The desulfurization dust integrated process program has the following advantages.

(1) The use of a large amount of incompletely reacted CaO contained in the soot discharged from the boiler as an absorbent significantly reduces the operating costs and meets the requirements of circular economy.

② flue gas circulating fluidized bed dry desulfurization of the chimney without corrosion.

Circulating fluidized bed dry desulfurization tower fierce turbulent high-density particle bed formed by the huge adsorption surface area, 100% removal of SO3, HCl, HF and all other acid gases. Therefore, the entire desulfurization system and the subsequent chimney without any corrosion. Not only greatly saving the investment of the anti-corrosion of the chimney, but also avoids the loss of boiler unit outage caused by the problems of anticorrosive implementation of the chimney.

③ After the first desulfurization dust, smoke temperature decreases, flue gas chemical abuse ability greatly weakened, filter bag life is substantially extended. In addition, the use of filter cake layer also helps to improve the desulfurization efficiency. CFB boiler supporting flue gas circulating fluidized bed dry desulfurization + bag filter, the comprehensive desulfurization efficiency is very easy to reach more than 95%.

Small Engine Normal Spark Plug

Small Normal Spark Plug,350 Small Block Spark Plugs,Ngk Small Engine Spark Plugs,Small Engine Normal Spark Plug

LIXIN INDUSTRIAL & TRADING DEVELOPING CO.,Ltd , https://www.kgvsparkplug.com

Wolf came to Rice University's new desalination system or replaced 18,000 desalination plants worldwide

The latest desalination systems, which combine biofilm technology and frontier nanotechnology to convert sunlight into heat, bring about a new revolution in seawater desalination.

The lack of water has always been a global concern, and the exploitation of the vast oceans on Earth is the most straightforward idea that everyone wants to solve. The oldest method of extracting fresh water from seawater is distillation, boiling brine, collecting water vapor and letting it pass fresh water through a condenser tube. Distillation has been in use for centuries, but it requires complex infrastructure and consumes less energy due to boiling water and steam generation, resulting in energy inefficiencies that make it more than half the cost of running water distillation equipment as energy.

Emerging technology for seawater desalination is membrane distillation, where hot brine flows into one side of the porous membrane and cold water flows out from the other side. Salt water is naturally drawn into the membrane from hot to cold, and since seawater does not require boiling, the energy requirement is less than the energy requirement of traditional distillation. However, the cost of energy is still very high because of the large amount of energy lost during hot water cooling.

Rice University announced on the 19th that one of their research teams has developed a seawater desalination system that combines membrane distillation with light-harvesting nanodevices to significantly reduce the amount of energy they need and to keep the entire process off the power system Power supply, the so-called off-grid technology. Currently, more than 18,000 desalination plants operate in 150 countries, but NEWT says the seawater desalination technology they developed is different from other technologies used today.

The study was conducted at Rice University's federally funded nanotechnology water treatment center (NEWT). Since its establishment in 2015, NEWT has been working on a technology called Nano-Photonic Solar Film Distillation (NESMD) that combines biofilm filtration with leading-edge nanotechnology that converts sunlight into heat.

In this system, to improve efficiency, NEWT researchers combine commercially available membranes with nanoparticles that convert light energy into thermal energy. This is achieved by heating the membrane itself as long as there is sunlight, without requiring the power system to stably supply hot water there, and reducing the need for electricity to just running one because it does not require large amounts of energy to heat the Water Pump to push fluid through the system. Therefore, the entire modular system can run on several solar panels.

Because the system is modular and easy to architect, it is possible to calculate the module area to be installed based on water demand, even in remote mountainous areas, offshore oil rigs and disaster relief sites, to install the required seawater Desalination system. This technology also makes it easy to replace the membrane distillation technology currently used in more than 18,000 water purification plants worldwide.

Qilin Li, a Rice University scientist and water treatment specialist, said: "This system will change the lives of about one billion people who do not have access to clean drinking water, and this off-grid technology will not only provide enough clean water for families Or large-scale built in the area to provide water for more people in the community. "This shows that the system is very flexible in use, easy to implement and easy to commercialize, with a huge commercial value.

Doosan Daewoo Cylinder Head Gasket Kit

Cylinder Head Sealer,Doosan Daewoo Cylinder,Doosan Daewoo Gasket Kit,Doosan Daewoo Cylinder Head Gasket Kit

Foshan Evictory Diesel Spare Parts Co., Ltd. , https://www.evictoryparts.com

The significance of centrifugal pump

The basic structure of the centrifugal pump is composed of six parts of the basic structure of the centrifugal pump is composed of six parts are the impeller, pump body, pump shaft, bearings, seal rings, stuffing box. 1, the impeller is the core part of the centrifugal pump, its speed is high, the impeller blades play a major role in the impeller assembly before static balance experiment. The inner and outer surfaces of the impeller require smoothness to reduce the frictional loss of water flow. 2, also known as the pump casing, it is the main pump. To support the role of fixed, and with the bearing bracket to connect. 3, the role of the pump shaft is connected by a coupling and motor, the motor torque to the impeller, so it is the main component of mechanical energy transfer. 4, the bearing is set on the pump shaft supporting the pump shaft components, there are two types of rolling bearings and plain bearings. Rolling bearings using butter as a lubricant to the appropriate general size of 2/3 ~ 3/4 Too much heat, too little sound and fever! Sliding bearings are used as a transparent oil lubricant, refueling to the oil level line. Too much oil to bleed along the pump shaft and cheap, too little bearing but also overheating and burn accident! In the process of running the pump bearing temperature up to 85 degrees generally run at 60 degrees, if high, we must find out the reason (whether impurities, whether the oil is black, whether the water) and timely treatment! 5, seal ring, also known as leakage ring. The gap between the impeller inlet and the pump casing is too large, causing the water in the high-pressure area of ​​the pump to flow to the low-pressure area through this gap, affecting the output of the pump and reducing the efficiency. The gap is too small will cause the impeller and the pump shell friction wear. In order to increase the backflow resistance to reduce internal leakage, delay the service life of the impeller and the pump housing, the inner edge of the pump housing and the impeller is provided with a sealing ring at the joint of the outer support, and the sealed clearance is maintained at between 0.25 and 1.10mm. 6, stuffing box mainly by the filler, water seal ring, packing tube, packing gland, water seal tube. The purpose of the stuffing box is to close the gap between the pump housing and the pump shaft so that the water inside the pump does not flow outside and the outside air does not enter the pump. Always keep the pump vacuum! When the pump shaft friction with the filler to generate heat will depend on the water seal to live in the water seal ring so that the filler cooling! Maintain the normal operation of the pump. Therefore, during the inspection of the pump running inspection of stuffing box is a special note! Filler needs to be replaced after about 600 hours of operation. Centrifugal pump flow components Centrifugal pump flow components are: suction chamber, impeller, pressure chamber three parts. The impeller chamber is the heart of the centrifugal pump and the heart of the flow component. Pump through the impeller on the liquid work, to increase its energy. Impeller according to the direction of the liquid is divided into three categories: (1) Radial impeller (centrifugal impeller) Liquid is along the axis of the vertical direction out of the impeller. (2) Diagonal impeller (Francis impeller) The liquid flows out of the impeller in a direction inclined to the axis. (3) Axial impeller The direction of liquid flow parallel to the axis. Impeller by inhalation is divided into two categories: (1) single-suction impeller (ie impeller from the side of the inhalation of liquid). (2) double suction impeller (ie impeller suction fluid from both sides). Impeller by cover form is divided into three categories: (1) closed impeller. (2) open impeller. (3) Semi-open impeller. One closed impeller is widely used, the aforementioned single suction impeller double suction impeller belongs to this form. Centrifugal pump works Centrifugal pump principle of work is: Centrifugal pump so water can be sent out due to the role of centrifugal force. Pump before work, the pump body and the inlet pipe must be filled with water into a vacuum state, when the impeller is rapidly rotating, the blade to promote rapid rotation of water, rotating water from the impeller in the centrifugal force of the fly, the pump After the water is thrown out, the central part of the impeller forms a vacuum area. Suwon's water pressure in the air pressure (or water pressure) under pressure through the pipe into the water pipe. This endless cycle, you can achieve continuous pumping. It is worth mentioning that: before starting the pump must be filled with water to the pump casing before starting, otherwise it will cause the pump body heat, vibration, reduce the amount of water, causing damage to the pump (referred to as "cavitation") Cause equipment accident! Many types of centrifugal pumps, classification methods are common in the following ways 1 by the impeller inhalation points: single suction centrifugal pump double suction centrifugal pump. 2 according to the number of impeller points: single-stage centrifugal pump multistage centrifugal pump. 3 according to the structure of the impeller: open impeller centrifugal pump semi-open impeller centrifugal pump closed impeller centrifugal pump. 4 according to the working pressure points: low pressure centrifugal pump medium pressure centrifugal pump high pressure centrifugal pump side vertical centrifugal pump.

DVI Input

Rgb To Dvi,Dvi To Sdi,E27Dvi Lcd Controller For 7 Inch,Dvi Input For Auo Lvds Lcd

Tonya Display Limited , https://www.tydisplay.com