China's imported CNC machine tools show volume increase and decrease in the first quarter

The data shows that in the first quarter of 2017, the import value of China's CNC machine tools reached 54.214 million U.S. dollars, and the cumulative amount decreased by 27.4% year-on-year;

Data show that in the first quarter of 2017, China’s CNC machine tool imports amounted to USD 54.214 million, and the accumulated amount decreased by 27.4% year-on-year. In terms of quantity, the number of imported CNC machine tools was 2,617 units in the first quarter, a year-on-year increase of 0.2%, and imports of CNC machine tools increased. The price decreases.

Compared to developed countries in Europe and America that have entered the era of post-industrialization and relatively constant demand for machine tools, China's industrialization process is not over yet. The rise of automobiles and electronic consumption and the demand for machine substitutions have made China's machine tool market potential reachable. It is the fancy business opportunity in the Chinese machine tool market that many world-renowned machine tool manufacturers have entered the Chinese market one after another. In particular, since the market situation improved last year, it has even accelerated the investment and layout. China's machine tool market has shown significant characteristics of intensified international competition.

In recent years, despite China's machine tool industry breaking through foreign technology blockade, through independent innovation, successfully developed a number of high-precision, high-speed, high-efficiency CNC machine tools, and improved the manufacturing capabilities of key equipment required by key industries in the national economy. But at the same time, we must also clearly understand that in the function, performance and reliability of some high-end CNC machine tools, China still has a big gap with the international advanced level.

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China's first domestically produced main bearing remanufacturing shield successfully originated

On May 1, China's first domestically produced main bearing remanufacturing shield CT006H was successfully launched on the left line of Ziyun Road Station, the second-line project of the Hefei Rail Transit Line No. 3, which was built by the China Railway Tunnel Group.

On May 1st, China's first domestically produced main bearing remanufacturing shield CT006H was successfully launched on the left lane of Ziyun Road Station, the second-line project of the Hefei Rail Transit Line No. 3, which was built by the China Railway Tunnel Group, marking China's breakthrough in the construction of the shield's main bearing. After the bottleneck of the independent technology was developed, the underground excavation task was performed for the first time.

This shield machine is an earth pressure balance shield machine that is better organized to remanufacture the Hefei formation. China Railway Tunnel Group adopts the “Scientific Research + Production Order” model in a pioneering way. Under the leadership of the scientific research team of the National Key Laboratory of Shield Tunneling and Excavation Technology of China Railway Tunnel, it cooperates with Luoyang LYC Bearing Co., Ltd. to form a raw material design, etc. With 6 independent intellectual property rights and a number of special standards, the localization of shield main bearings has been successfully achieved.

In order to build a new tool for tunnel construction and breakthrough in the self-developed bottleneck of the shield main bearing, the R&D team of the China Railway Tunnel Group has continuously increased the research efforts on the main bearing of the shield machine. On November 26, 2016, CT006H, China's first domestically produced main bearing remanufactured shield machine, went offline in Hefei and began to be assembled on January 5, 2017. During the period, China Railway Tunnel Group organized many personnel such as shield experts, equipment managers, skilled workers, etc., proceeding from aspects of program demonstration, transportation and assembly, equipment debugging, etc., and was meticulous, accurate, and accurate in each step of the construction process. It ensures the normal operation of various parts such as the shield body, cutter head drive, segment assembly machine, soil discharging mechanism, and electrical system, and has passed the acceptance of the shield node.

The total length of the Hefei Metro Line 3 is 37.2 kilometers. The line passes through the Feixi County and the Hefei Economic Development Zone, the Administrative New Area, the Laoshan District, the Xiangyang District, the Yaohai District and the Xinzhan District. After the completion of the line, it will further improve the Hefei rail transit network, better serve the economic development of Hefei, and increase the happiness index of Hefei citizens' traffic travel.

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Raising the Cyber ​​Security Standard for Driverless Cars and Building New Advantages in the UK

With the rapid development of driverless technology and car networking, automotive network security is becoming a serious topic that must be faced.

With the rapid development of driverless technology and car networking, car network security is becoming a serious topic that has to be faced. Recently, the British government has funded the 5×StarS alliance to improve the cyber security standards of the autonomous automotive industry.

The 5×StarS Alliance has just received funding from the British government to improve the network security standards of the autonomous automotive industry. The alliance consists of UK vehicle development engineering consultancy HORIBAMIRA, construction machinery technology company Ricardo, ItatchamResearch, which specializes in providing data for the UK automobile insurance industry, and technology company Roke and Axillium Research, which integrates research, testing, and consulting.

Together, they will participate in the "Protect Automotive Cyber ​​Security" program as part of the government's efforts to make the UK a global hub for the development, testing, and commercialization of autonomous vehicles. The Secretary of Commerce and Energy, Greg Clarke, said: "The competition for the development of networking and driverless vehicles is intensifying. As a government, we are determined to build our own advantages and ensure that Britain is at the forefront of the revolution."

Specifically, the alliance will develop an industry safety assurance standard to ensure that all components and systems used in vehicles are tested and comply with relevant cybersecurity standards. The standard is a star rating system for the security of driverless car cyber attacks, similar to the European NCAP (European New Car Collision Test) rating for car crash safety. Therefore, this is good news for the connected car industry, consumers and insurance companies, although it is not yet clear which safety standards the alliance will develop.

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How many red wines are suitable for drinking every day?

Many people think that wine is red wine. In fact, the relationship is reversed. Red wine is red wine, so red wine is a kind of wine and it is a fruit wine that is fermented after being naturally fermented. According to the color, there are white wines and pink wines besides red wines. Red wines can be divided into sweet red wines, semi-sweet red wines, semi-dry red wines and dry red wines.

Now people can often see red wine in their daily lives, like red wine and steak, and red wine is usually served with red meat. The composition of red wine is relatively simple, more than 80% is grape juice, 10%-30% of the components are the alcohol produced by the fermentation of the sugar in the grapes, and the rest are like tartaric acid, tannic acid, minerals, pectin and other 1000 species. Substances, but the quality of red wine is to see whether these substances can balance, so that the taste of red wine glycol.

Red wine is rich in vitamins, such as vitamin B1, vitamin B2, vitamin B5, vitamin B6, vitamin B12, vitamin C, vitamin E, also contains 24 kinds of amino acids, and contains 8 kinds of essential amino acids, red wine also contains pantothenic acid 1 Milligrams per liter, inositol 300-500 mg per liter, choline, polyphenols, resveratrol 1 mcg per liter, minerals (calcium, iron, phosphorus, sodium, magnesium, copper, potassium, selenium, manganese, cobalt , iodine, sulfur, zinc, etc.

From the nutritional content of red wine can be seen, the nutrition of red wine and its rich, then the effect of drinking wine is certainly a lot, here's a brief introduction to the efficacy of red wine.

1. Assist in digestion

Red wine was chosen as a table wine, because red wine stimulates the secretion of gastric juice in the stomach, which helps digestion, and the tannin in red wine can promote smooth muscle contraction in the intestine.

2. Anti-aging

Red wine contains a variety of antioxidants, such as vitamin C, vitamin E, tannins, flavonoids, phenols, antioxidants can clear the body's free radicals, and thus play an anti-aging role.

3. Lower cholesterol

Red wine can increase high-density lipoprotein in human blood, and high-density lipoprotein can promote the metabolism of cholesterol, thereby reducing the content of cholesterol in blood, and red wine also contains a polyphenolic substance that can inhibit platelet aggregation and thus prevent thrombosis. produce.

4. Prevent fatty liver

Red wine contains inositol which can promote the metabolism of fat in human liver tissue and other tissues to prevent fatty liver.

5. Beauty

Red wine has always been considered to be able to cosmetology, and the fact is indeed the case, as many businesses have launched a red wine mask, because the low concentration of acid in red wine can clean the skin and also anti-wrinkle. If you drink wine in the right quantity every day, you can also enjoy beauty and beauty.

6. Nourishing the body

Red wine is rich in nutrients. As already mentioned above, it is not reported one by one. Therefore, proper drinking of red wine is beneficial to health. Attention should be given to the right amount. Excessive alcoholism can cause injury. Drink is good for the wine, but if you drink it wrong, then what is the amount of red wine per day?

According to the red wine with 12% alcohol content, adult males drink 300-400 ml a day and females 250-350 ml. This amount is best for 3 to 4 days a week, and if you want to drink every day, then drink red wine. The amount will be reduced to 50-100 ml, and do not drink on an empty stomach. Although the wine is good, but the wine is also wine, not an empty stomach to drink. As for the time of drinking red wine, generally 7 to 9 o'clock in the evening after dinner is best. At this time, the activity of ethanol transaminase in the human body is relatively high, and the alcohol will be decomposed at the fastest speed. It is said that drinking red wine before going to bed helps sleep.

Some people like to add sprites in red wine to improve the sour taste of red wine, but this will make you eat too much sugar, and adding sprite will destroy the original nutrition of red wine. Others like to add ice cubes to red wine. This will dilute the taste of the red wine. Generally, red wine is placed in the ice bucket to make the red wine reach the optimal drinking temperature of 14-18 degrees Celsius.

Intermediates of Cladribine, Carvedilol, Lurasidone, olmesartan, Risedronate Sodium, Atazanavir, Saxagliptin, Dabigatran,Dapoxetine,Cefixime,Ceftaroline fosamil and etc.

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MAIN API PRODUCTS USP/BP

PRODUCT NAME	CAS NUMBER	SPEVIFICATION
Azithromycin	117772-70-0	BEP
Cefpirome Sulphate sterile	84957-29-9	USP JP16
Ceftriaxone Sodium (Sterile)	104376-79-6	USP31
Cefotaxime	64485-93-4	USP30
Ciprofloxacin HCL	85721-33-1	USP/BP
Gentamicin sulphate	1405-41-0	BP
Levofloxacin	100986-85-4	USP27
Lincomycin Hydrochloride	859-18-7	EP6.0
Moxifloxacin Hydrochloride	186826-86-8	USP31
Tigecycline	220620-09-7	USP
Linezolid	165800-03-3	EP
Dexamethasone	50-02-2	USP/BP/EP
Methylprednisolone	83-43-2	USP/BP/EP
Dexketoprofen trometamol	156604-79-4	BP2008
Ibuprofen	15687-27-1	BP
Metamizol	68-89-3	DAB
Sulindac	38194-50-2	USP/BP/EP
Naproxcinod	163133-43-5	USP28
Tripelennamine Hydrochloride	154-69-8	USP28
Itraconazole	84625-61-6	USP/BP
Cytarabine	147-94-4	USP31
Leucovorin Calcium	1492-18-8	USP32
Valsartan	137862-53-4	USP30
Telmisartan	144701-48-4	USP31
Rosuvastatin Calcium	147098-20-2	USP/BP
Pitavastatin Calcium	147526-32-7	USP/BP
Fluvastatin	93957-54-1	USP31
Vinpocetine	42971-09-5	EP6.0
Atazanavir	198904-31-3	BP
Rosiglitazone	122320-73-4	USP30
Esomeprazole Magnesium	161973-10-0	USP/BP
Topiramate	97240-79-4	USP31
Fexofenadine HCl	153439-40-8	Inhouse
Bosentan	147536-97-8	Inhouse
D-Cysteine	921-01-7	Inhouse
D-Phenylalanine	673-06-3	Inhouse
Linagliptin	668270-12-0	Inhouse
Rivaroxaban	366789-02-8	USP
Saxagliptin	361442-04-8	USP
Vildagliptin	274901-16-5	USP

Major Pharmaceutical Intermediates

Items Descripation	Structure	Application
MICA ESTER CAS No: 246035-38-1 Purity: ≥98%		For Cefixime
EHATA CAS No: 64485-82-1 Purity: ≥98%		For Ceftazidine
2-Chloroadenine CAS No: 1839-18-5		For Cladribine, Fludarabine et al
Bicyclo(2,2,1)Heptane-2,3-di-exo-carboximide CAS No: 14805o-29-9		For Lurasidne
(R,R)-1,2-Bis(methanesulfonyloxy methyl)Cyclohexane CAS No: 186204-35-3		For Lurasidone
3-(Piperazin-1-yl)benzol[d] isothiazole CAS No: 87691-87-0		For Lurasidone
Trityl olmesartan CAS No: 144690-92-6 Purity: ≥98%		For olmesartan
3-Acetyl Pyridine CAS No: 350-03-8		For Risedronate Sodium
3-(AceticAcid)pyridine HCL CAS No: 6419-36-9		For Risedronate Sodium
Risedronic Acid CAS No: 105462-24-6		For Risedronate Sodium
3-Hydroxy-1-adamantyl-D-Glycine CAS No: 709031-29-8		For Saxagliptin
(1s,3s,5s)-3-(aminocarbonyl)-2-azabicyclo(3,1,0) hexane-2-carboxylic acid tert-butyl ester CAS No: 361440-67-7		For Saxagliptin
(S)-N-Boc-3- hydroxy-adamantylglycine CAS No: 361442-00-4		For Saxagliptin
2-Azabicyclo[3.1.0] hexane-3-carbonitrile, (1s,3s,5s)- CAS No: 866083-42-3		For Saxagliptin
Ethyl 3-(pyridin-2-ylamino) propanoate CAS No: 103041-38-9		For Dabigatran
N-(4-Cyanophenyl) glycine CAS No: 42288-26-6		For Dabigatran
4-methylamino-3-nitrobenzoic Acid CAS No: 41263-74-5		For Dabigatran
S-3-Amino-3-phenylpropanoic acid ethyl ester HCL CAS No: 167834-24-4		For Dapoxetine
(S)-3-Amino-3-Phemylpropan -1-ol CAS No: 82769-76-4		For Dapoxetine
(S)-3-Dimethylamino-3-Phemylpropanol CAS No: 82769-75-3		For Dapoxetine
4-{4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]-1-butynil}-α,α-dimethyl benzene acetic acid CAS No: 832088-68-3		For Fexofenadine HCl
Methyl 2-(4-(4-chlorobutanoyl)phenyl)-2-methylpropanoate CAS No:154477-54-0		For Fexofenadine HCl
5-Bromo-2-chlorophenyl)(4-ethoxyphenyl)methanone CAS No 461432-22-4		For Dapagliflozin
4-(5-Bromo-2-chlorobenzyl)phenyl ethyl ether CAS No :461432-23-5		For Dapagliflozin

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Experts uncover the truth behind the joint cancer between husband and wife

64-year-old teacher Huo had unfortunately got advanced lung cancer. He had surgery and radiotherapy and chemotherapy in the hospital. Since Mr. Huo's hospitalization began, his wife has been escorting his beside him every day, taking good care of him, and washing his face with tears all the time. He is extremely sad. Six months later, Mr. Huo’s wife was also found to have suffered from lung cancer. The teacher's son asked his doctor, "My father is suffering from lung cancer. It has nothing to do with his 40-year history of smoking. But my mother doesn't smoke or drink. How can she get lung cancer?"

Doctors explained that “husband cancer” like Huo’s has been a phenomenon that has gradually become of concern to the medical community in recent years. This may be because husbands and wives have lived together for a long time because they share the same way of life and they share the same Under carcinogenic risk factors, carcinogenic factors often endanger both parties in the same way and may induce the same or different cancers. When her husband smokes, his wife will suffer from passive smoking; eating at the same table, bad eating habits will also harm both parties; cohabitation, environmental carcinogenic factors will be harmful to both parties. Gastrointestinal cancer is very common in couple cancers. It is more common in families who like to eat spicy foods and pickle foods. In addition, negative psychological factors may also be the cause of "marital cancer." If one of the spouses is suffering from cancer, the other is bound to be in anxious and anxious. The mental and physical pressure will increase dramatically, the immune function will decline sharply, and the potential carcinogenic factors in the body will soon become active. The chance of suffering from cancer is greatly increased.

In fact, most preventable cancers are related to human behavior. If people choose a healthy lifestyle, many cancers can be prevented. To communicate with others, to maintain a good mood, not to smoke, not to drink too much, to keep exercising, to eat less meat, to fry, to mold, pickle and smoke food, to control weight, etc. can reduce the risk of cancer. (Zhao Chenghui)

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New Algae Lycopene Content Will Be More Than 1500 Times More Than Tomato

A new research result from Nankai University has successfully obtained a large number of high-purity “plant gold” lycopene from natural seaweed plants. The research results have been selected into the "Special Scientific Research Project of Marine Public Welfare Industries" of the State Oceanic Administration.

Lycopene, known as "plant gold," belongs to carotenoids and is one of the strongest antioxidants found in nature today. The study found that it has preventive and therapeutic effects on cancers such as prostate cancer, breast cancer, and pancreatic cancer, vascular sclerosis, and coronary heart disease. In addition, it is also selected as one of the top ten health food additives for modern people.

Lycopene has a broad market prospect. At present, the method for obtaining lycopene is mainly extracted from tomatoes, and chemically synthesized and fermented by microorganisms. Each of the three methods has its own drawbacks. The content of tomato raw materials is too low and the production cost is high. The chemical synthesis products not only have poor physiological functions, but also can not show their advantages in the market because of people's concerns about their toxic and side effects; The supply of synthetic precursors is limited, and there is no substantial breakthrough in production efficiency.

Nankai University will adopt a gene knockout technique to redesign the metabolic pathway of Dunaliella salina carotenoids to obtain a new D. salina variety with a lycopene content of more than 6% dry weight. It is estimated that the unit content of lycopene in this cultivar is 1500 times that of tomato and 100 times that of microbial fermentation bacteria, which is much higher than the level of similar research at home and abroad.

The head of the project team, Professor Chen Defu of the School of Life Sciences of Nankai University, said: "D. salina is a salt-producing, cell-free single-celled green algae, and the highest content of beta-carotene, if it is artificially disrupted. The function of the intracellular lycopene β-cyclase gene allows lycopene to no longer be metabolized into β-carotene, which is accumulated and stored in cells, and the intracellular lycopene content will increase dramatically.”

Gene knockout technology is a genetic engineering technology developed in the late 1980s and won the Nobel Prize in Physiology and Medicine in 2007. It has fixed and quantified the genome at the DNA level in a certain way to achieve accurate genomes. The purpose of the transformation. "It provides us with the possibility of disrupting the strong lycopene β-cyclase function in Dunaliella salina," said Chen Defu.

It is reported that this project will be cooperated by Nankai University and China Salt Salt Engineering Technology Research Institute. At the same time, technological development will transform the existing conditions and technologies into a production workshop with an annual output of 1,000 kilograms of lycopene-rich algae powder. Safe and functional new lycopene product.

This new seaweed is not only suitable for the Tianjin coast natural environment, but also has the advantages of genetic stability, high yield, low cost, safety and health, and simple process. (Zhu Hong, Ping Yang)

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Olympic special vegetables will be on the public table

Special vegetables for the Olympic Village during the Olympic Games will appear on the ordinary citizens' tables in the future. Yesterday, the Municipal Bureau of Commerce and the Municipal Agricultural Committee jointly organized a negotiation and matchmaking activity between five Olympic vegetable processing companies and the city’s large-scale supermarket chains and catering companies, which prompted several cooperation intentions on the spot.

Participated in the joint ventures such as Shunxin Innovation, Yunong, Kangyipin, Grand Canal and the creation of five vegetable cutting companies. During the Olympic Games, they shouldered all the tasks of providing cutting vegetables to the Olympic Village and supplied more than 120 tons of Olympic special vegetables. . The products produced by these companies mainly include vacuum-packed dishes, semi-finished products that can be directly cooked, and salad-like ready-to-eat products. Corporate officials said that most of the products have never been supplied to the market.

Wal-Mart, Carrefour, Wumart, Supermarket, Jingkelong and other retail companies and catering companies such as Cheap Place, Quanjude, and Leopard held talks with the five special vegetable suppliers for the Olympic Games. Several preliminary sales intentions were reached on the spot.

The person in charge of the Grand Canal Agricultural Product Distribution Center stated that the special vegetables for the Olympic Games were imported from designated bases in a country-specific manner, and the prices of processed products were about 20% to 30% higher than ordinary pollution-free green foods. The supply of products is very sufficient, and the goods can be delivered soon after the agreement is reached. In the fastest two or three days, they can appear on supermarket shelves. (Reporter Gu Xiaoyu)

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60-year-old man eating pineapple is dangerous food that can cause allergies to be cautious

Food allergies tend to be high

It is understood that the incidence of allergic diseases has been increasing year by year, and the incidence of young people is getting higher and higher.

Mr. Zhang, 60 years old in Shenyang, suddenly felt that his voice was uncomfortable and his tongue was swollen. He was still a bit uncomfortable. The old man went to the hospital only after his son's insistence, and to the emergency department for a minute or two, the old man suddenly breathed. Difficulties, there was no heartbeat or breathing after the ground fell. Thanks to the doctor's timely rescue, Mr. Zhang has turned to safety. The doctor analyzed that the old man is allergic. It may be that a small piece of pineapple that he had eaten that day caused allergies that caused laryngeal edema. Throat edema was extremely dangerous, causing inspiration. The mucous membrane edema in the throat blocked the airway and could be instantly fatal.

Meng Shuang, chief physician of the Seventh People's Hospital of Shenyang, said that many people mistakenly believe that allergies are no big deal. The fatal cause of allergies is that most of the time the body reacts excessively to allergic foods, resulting in laryngeal edema, asphyxia, and life-threatening symptoms such as circulatory failure, blood pressure drop, and arrhythmia. The pineapple that Mr. Zhang eats is also one of the most allergenic fruits. This is because pineapple contains glycosides, serotonin and bromelain. Glycosides are prone to cause itching in the mouth. Serotonin can contract blood vessels to increase blood pressure after serotonin. Bromelain is a proteolytic enzyme and is the main ingredient that triggers pineapple allergy.

Always pay attention to allergic signals

Meng Shuang introduced that allergies are actually a systemic disease, but people's symptoms are manifested in different parts of the body, where the target organs are located, and the symptoms are expressed in places such as those that appear in the nose, that is, allergic rhinitis; The respiratory tract, which may be bronchial asthma; appears in the digestive tract, possibly allergic enteritis.

Food allergies are common. Fish, shrimps, mangoes, pineapples, tomatoes, peanuts, peaches, salmon, bananas, and eggs all cause allergies. According to food allergies can find out the food allergic to their own, take targeted avoidance. If you are allergic to a certain food, not only should it be fasted, but you should also fast-up all products containing that food. For example, milk allergies, in addition to avoid milk, but also fasting cream, cheese, ice cream and other dairy products.

For patients who have identified allergens and are prone to anaphylactic shock, they must always pay attention to their allergic symptoms in life, such as rapid skin flushing, erythematous skin rash, rashiness, suffocation or wheezing after eating. Allergic symptoms, we must immediately go to the hospital for treatment.

Wheat foods can resist allergies

Wang Qiang, chief physician of the Department of Dermatology at Seven Hospitals, said that at present, no method of eradicating food allergies has been found. Therefore, the best prevention is to understand their own conditions and avoid foods that cause allergies. "Some people are lucky enough to feel that eating a 'small mouth' should be no big problem." She told reporters that "a small mouth" is also very dangerous. After an allergy occurs, it is more serious than once. Sometimes a mouthful of food may be fatal. . Although the current international treatment of food allergy is also taking a "gradual trial" approach to desensitization, but there are very strict operational requirements, not suitable for self-attempt. Clinically, there are a few examples where you feel lucky to eat a bit and lose your life. "If you find allergies to certain foods, you must avoid them absolutely. If you have frequent allergies and you can't find a reason, you can keep a diary, write down the food you eat each day, and the daily skin reactions. Allergens."

Some people have such doubts as to why they were allergic to a certain type of food before, but are allergic to it now? Meng Shuang explained that this is probably because the composition of food has changed, for example, some people eat bred shrimp. It is allergic. This is due to contamination or the addition of drugs and other ingredients during the cultivation process. Eating non-cultured shrimp is not allergic. On the other hand, fatigue may occur on its own, coupled with busy work and decreased resistance, which may also lead to "intermittent" allergies.

She suggested that allergic persons should pay special attention to the balance of diet and nutrition, eat less greasy foods, sweet foods, spicy foods and other irritating foods, tobacco, and alcohol, and eat less cattle, sheep, chicken, fish, shrimp, crabs, etc. food. To eat more vitamin-rich foods, such as fruits and vegetables, can enhance the body's immunity. Resistance to allergies, wheat and green bean water is a good choice. For people with allergic constitutions, care should be taken when selecting health supplements and nutritional supplements. Carefully learn about the specific ingredients of health supplements and nutritional supplements. If necessary, consult a doctor before eating. The small foods that many people love contain a lot of pigments, preservatives, citric acid, etc. These food additives are prone to cause allergies, so it is better to eat less or not to eat. (Guodong Northeast Fanhua)

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Scientists Find Three Genetic Variations Associated with Childhood Obesity

Xinhua News, London, January 26 An international scientific team reported in the latest issue of Britain's "Nature and Genetics" magazine that they have discovered three new genetic mutations related to childhood obesity that will help medical researchers. Predict and even treat childhood obesity.

Researchers from the National Research Center of France and the Imperial College in London, United Kingdom, said that in this 10-year study, they have performed genome-wide genetics on thousands of obese children under 6 years old and some adult obese patients. In the association analysis, these adult subjects all began to have obesity symptoms during childhood or adolescence.

Researchers compared their genetic information with those of normal-weight individuals of the same age, and identified three previously undetected genetic variants, and 50% of childhood obesity patients were associated with these three genetic variants.

Of the three genetic variants, one that is most closely related to childhood obesity and adult obesity is located near the PTER gene, and researchers are not yet aware of its function. They estimated that one-third of children's obesity can be attributed to this genetic variation, and about one-fifth of adult obesity is related to it.

The second gene mutation is located in the NPC1 gene. Earlier research on rats has shown that this gene is related to appetite. Researchers estimate that one-tenth of childhood obesity is associated with this genetic variation.

The third gene variant is located near the MAF gene. This gene controls the production of insulin, glucagon, and glucagon-like peptides, which play a key role in the metabolism of glucose and carbohydrates in the human body. About 6% of childhood obesity is associated with this genetic variation.

The research team said in the report that the next step is to conduct more in-depth studies to confirm whether the three genes function independently. They said that the new findings and past research results in this area will help the medical community develop genetic tools to predict which children are "high-risk" obese children and intervene in advance to prevent children from developing obesity symptoms.

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Iced live fish, revived a month later

A live fish that has just been salvaged has been stored on ice, and after 1 month of putting it back into the water, the fish are still leaping up and down after a brief recovery; ripe strawberries are still fresh and dripping after 2 to 3 months of ice storage. The National Agricultural Fresh-keeping Engineering Technology Research Center in this Municipality recently developed the “Live Ice Temperature Storage Technology” to keep fresh agricultural products fresh for 2 to 3 months and reach the international advanced level and obtain national invention patents.

The third generation of fresh-keeping technology: let the plants and animals sleep

The National Agricultural Products Preservation Engineering Technology Research Center is the only national-level engineering and technology center in the agricultural sector. With the support of this Municipality's Science and Technology Innovation Fund, the center launched a full-scale research on ice-temperature modulating and fresh-keeping, and after more than a year of experts’ technological research, it finally developed this new preservation technology, which is followed by refrigeration and modified atmosphere preservation. After the third generation of preservation technology.

“Water freezes below 0°C, and the plant tissue remains in a living state at around 0°C, but its metabolism is reduced, breathing is slowed down, and it is temporarily in a dormant state.” Zhang Ping, National Agricultural Product Preservation Engineering Technology Center According to the doctor, living ice temperature storage stores food at a temperature below zero degrees Celsius to the freezing point of the food and stores it in a non-freezing state. During storage, fresh produce is temporarily dormant.

Dr. Zhang Ping said that the biggest advantage of ice-temperature storage compared with ordinary cold-storage storage is that the date of storage of agricultural products is longer and the freshness is higher. This new technology also has the outstanding advantage of being suitable for the long-distance transportation of agricultural products. For example, selling live fish to foreign countries requires the transportation of large quantities of water and oxygen equipment, which is very costly. However, transportation using ice-temperature storage containers does not require water and oxygen equipment. It only allows the fish to “sleep” and then gradually raises the temperature to other places to “wake up procedures”. The fish can then hop around and greatly reduce storage and transportation costs.

Preservation period extended by more than 2 times, better effect

According to experts, the cost of ice-temperature storage is slightly higher than that of ordinary cold storage, but it is lower than that of ordinary air-conditioned storage, and its storage effect is much better than that of ordinary air-conditioned storage. Compared with traditional preservation technology, ice temperature preservation can extend the shelf life of agricultural products by more than 2 times, and it can minimize harmful microbial activities and maintain the nutrition of agricultural products. The introduction of the ice-temperature air-conditioning library will enable the general public to eat more counter-season fresh produce, and will greatly increase the added value of agricultural products. For example, cherries cost 10 yuan per kilogram in the harvest season, and the shelf life can be extended by 2 to 3 months through ice temperature storage. The market price of 1 kilogram is as high as 50 yuan.

At present, the ice-temperature air-conditioning warehouse has been used in demonstrations in some of the farmers' markets in this city. This year it will be promoted and used by large-scale leading enterprises in the circulation industry throughout the country. It plans to build 300 ice-cooled air-conditioning warehouses throughout the year with a storage capacity of more than 10,000 tons. .

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Food Irradiation Protects Businesses

According to relevant media reports, 326 batches of imported “foreign goods” were found to have potential safety hazards in December of the last month alone, mainly including: Japan's “Butterfly Cui Poetry” astringent lotion, containing resorcin; Thailand’s “double lotus” All natural plant toothpaste, diethylene glycol content exceeded; South Korea "Rakuten" Dream cocoa chocolate copper exceeded; New Zealand "Anman Jiabao" infant formula milk, the total number of bacteria exceeded. The most irresistible factor is that a "Gatton Brand" cookie prepared by Hong Kong Garton Co., Ltd. even contained a note with a letter. In this regard, the quality of imported "foreign goods" is not "as high as it is" like its price.

Faced with this series of evasive food safety problems, the people said: “I am afraid of hormones for eating wolfberry, afraid of toxins for vegetarians, and afraid of the color of drinking beverages. After five years of grinding a sword, after the fourth trial, the "Food Safety Law" finally came into being, and will be implemented on June 1 this year. Then, can the food safety law that bears great expectations become the "ballistic vest" for the people's table?

"Imagine, if consumers have food poisoning, how can consumers prove that they have problems with the food they purchase? Another incident such as melamine, if not occurring on a large scale, has attracted the attention of the medical department. How do consumers know that milk powder is a problem?” According to relevant sources, the introduction of the “Food Safety Law” reflects the high efficiency of national legislation and has a deterrent effect on counterfeiters, but it must completely eliminate food safety incidents. The most fundamental thing is the improvement of enterprise equipment, technology and management."

Based on this, relevant persons pointed out that the issue of food safety has become the primary issue faced by consumers in the 21st century. We should adopt a strategic vision and a positive attitude to solve it. Developing food irradiation technology vigorously will be a long-term and effective method.

It is reported that food irradiation technology is an excellent alternative to traditional heating, cooling or chemical treatment. Irradiation of food by irradiation sterilization and sterilization, food will not heat up, fresh food can be processed, and will not remain in the food like medicine; compared with heating, food ingredients rarely change, and frozen, Compared with cold storage, it can save a lot of energy; it can remove microorganisms in foods that cause food spoilage and cause foodborne diseases, so as to ensure food safety and prolong the shelf life of foods.

The person in charge of Jinjiang Jixing Radiation Technology Co., Ltd. described: “With the rising living standards of the people and the rapid development of international trade, the safety and quality problems of agricultural products and foods have become increasingly prominent and have become the main contradiction to be solved in the new stage of agricultural development. First, food irradiation technology is one of the effective measures to alleviate this contradiction."

The person in charge said that currently the application of irradiated food is extremely common and recognized by more and more consumers. Routine use of pork, poultry, fruits and vegetables, seasonings, seeds, spices, eggs, grains, molluscs Many products such as crustaceans have been irradiated.

"After irradiation, the product is affixed with a 'safe, sterile, green' label. This puts the company at the end of the final prosecution and control on the export, which ensures the smooth sales of the product and increases the sales volume of the company. The promotion of the brand and the enhancement of the product value ensure that the company can avoid risks and provide guarantees.” The responsible person said, “After extensive application of the irradiation technology, product quality has been guaranteed, bringing good news to consumers; Well, it is beneficial to get consumers' favor and obtain a stable customer base. In addition, the increase in sales volume also brings tangible economic benefits to the company. This is a win-win situation. Why not?

V-Profile Press fitting pipeline system is widely used in cold and hot water supply, heating supply, fire protection, medicinal gas, industrial petroleum pipeline system etc.

Compared with traditional pipeline system, it`s not only more economical, safer and healthier, but also easier and faster for installation with longer service life.

1. Press fitting range:

Coupling -- Equal coupling, Reducing coupling, Slip coupling, coupling with male/ female threads;

Elbow -- Equal elbow, Elbow 90°, Elbow 45°, Reducing elbow, Elbow with plain end, Elbow with wall plate, and Elbow with male/ female threads;

Tee -- Equal tee, Reducing tee, Tee with wall plate, and Tee with male/ female threads;

Others-- Pipe cap, Pipe Bridge and Flange connector.

2. Material: Stainless steel 304L, Edelstahl 1.4306/ Edelstahl 1.4301, AISI304L, Inox304L;

Stainless steel 316L, Edelstahl1.4404, AISI316L, Inox316L;

Galvanized carbon steel, 1.0034C-Stahl, Kohlenstoffstahl, ACCIAIO AL CARBONIO.

3. Size: 3/8``-4``inch or as request, pipe wall thickness: 1.0--2.0mm

Sizes range:

DVGW W534:1995: 15, 18, 22, 28, 35, 42, 54, 76.1, 88.9, 108mm.

JIS G 3448-1980: 15.88, 22.22, 28.58, 34.00, 42.7, 48.6, 76.1, 88.9, 108mm.

4. Standard:

Press fitting standard: (DIN) DVGW W534-1995; (JIS) JWWA G116:2001; GB/T 19228.1-2003

Pipe standard: DIN10312:2003; GB/T 19228.2-2003

O-ring sealing standard: CEN EN 681-1:2006; GBT 19228.3-2003

5. O-Ring Seal: "Chlorinated butyl rubber" (CIIR), EPDM, HNBR, NBR and FKM, etc.

EPDM (black): max working pressure 16bar, working temperature from -20℃ to 120℃, Suit medium: cold and hot water, compressed Air etc.

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7. Anneal: all stainless steel pipe fittings are annealed in inert gases before packing.

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Lose weight from the diet to eat bitter gourd weight loss is a good helper

Is summer coming, but also for the clothes can not stop the fat of trouble? The diet has a very close relationship with weight, so if you want to lose weight successfully, you must start with a diet.

Bitter gourd slimming method

The bitter gourd juice into a drink, if it is unbearable, then put a kiwi or tomato, and bitter gourd juice together to drink, but do not add any sweet fruit, because sugar will reduce the stability of bitter gourd weight loss hormone, In addition, the bitter gourd slag left over from bitter gourd juice is eaten.

The fiber is divided into soluble and insoluble. Most of the fiber in the bitter gourd slag is insoluble. The fiber can promote intestinal peristalsis and decompose intestinal fat. If your stomach is not very healthy, you can only eat 2 roots a day. Drink a bit of bitter gourd juice before lunch and dinner. If your stomach is healthy, you can eat 4 a day, but not more than 4.

Usually bitter gourd juice requires 4 bitter gourds, which can be consumed once for breakfast, lunch, and dinner, and then once a night before going to bed 3 hours before drinking, can not sleep after drinking, 4 cups a day. The most obvious response of bitter gourd after being absorbed by the body is thirst. If you do not want to get up and drink in the middle of the night, then do not drink before going to bed.

Pay attention to bitter gourd slimming methods

1. Because bitter gourd is a cold food, so you can not eat more, and do not drink tea in the process of drinking bitter gourd juice, whether it is black tea or green tea must stop, can only drink water. Because tea polyphenols in tea can hurt the stomach that feels tired from drinking bitter gourd.

2. Choose green bitter gourd the most effective, black bitter gourd without green bitter gourd weight loss effect is good, the price is still very expensive, although the black bitter gourd is not bitter, but it is not recommended to eat it to lose weight, and the color yellow bitter gourd also do not eat.

3. Drink bitter gourd juice to lose weight and other weight loss foods are the first to eliminate edema, remove intestinal fat, although the beginning effect is not obvious, but do not give up, as long as you stick to it can be found that the body's fat is reduced every day .

4. Whether it is to drink bitter gourd juice or bitter gourd weight loss, the speed of weight loss will not be fast, drink bitter gourd reduced the food intake of three meals, plus bitter gourd own weight loss, this is the fastest way to eat bitter gourd to lose weight. Do not think that if you eat bitter gourd, you can lose weight. If you don’t control the amount of food you eat, it’s okay to eat as much as you like, then you’ll only get fatter. Eating bitter gourd does not require dieting, but spicy foods and greasy foods are also not eaten.

5. After you have eaten Bitter Gourd for a while, you will find that your bowel movement will become smoother. If you have diarrhea, it means your stomach is no longer able to endure. Then you need to reduce the amount of bitter gourd or stop first. Stop.

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A H1N1 influenza virus gene is about to be deciphered

The newspaper Berlin, May 4 (reporter Gu Gang) According to Prof. Jorge Haak, director of the German Robert Kauch Institute, the multinational virus research institute is about to complete the task of deciphering the H1N1 virus gene. The relevant information is expected to be completed. It will be announced in a few days. In addition, German experts believe that the spread and harmfulness of the H1N1 influenza virus may be lower than estimated, but there is no reason to lift the warning.

The German Robert Kauch Institute is an authoritative organization that specializes in research and analysis of viral outbreaks. Professor Jorge Haak revealed to the media on the 4th that the cracking of the H1N1 virus gene is about to be completed and the information is expected to be announced in a few days. In order to accomplish the task of deciphering the virus genes, the first time in the world, virus insulators have been cultivated, and virus research institutes in many countries have participated in gene decipherment tasks, including the BSL-4-high safety laboratory in Marburg, Germany. The results of the study are very important for the production of vaccines, because until now, people knew very little about the H1N1 virus.

In addition, according to statistics of the World Health Organization, there are currently 20 cases of A/H1N1 virus infection in the countries and regions. The confirmed number of infected people exceeds 900 and continues to show an increasing trend. The German Robert Koch Institute confirmed that there are 10 confirmed infected patients in Germany. These patients are relatively stable and have no life-threatening conditions. However, Professor Hacker believes that there is no reason to dismiss the warning. We must consider that there may be more new cases. He also said that it is still impossible to predict when the epidemic will end. Director-General of the World Health Organization Margaret Chan also said that he must be vigilant that there may be a second wave of outbreaks.

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Children's physical exercise is very important how to train children to love sports

Today, in the field of health education, the focus of physical activity has shifted from the basic movements of mechanical and simple training of young children to enabling young children to like and actively participate in sports activities. How to make children happy while getting healthy in sports activities has become a topic that cannot be ignored in the health education of children. During the school class one-year educational campaign, I devoted myself to the study of "Integration of Children's Sports Games and Thematic Activities," and made a useful attempt to "happy sports and healthy growth" for my class, and paid attention to children's sports activities. Its fun, so that children in the happy exercise to master the skills and physical exercise, and get physical and mental pleasure, in order to promote the healthy and confident growth of children. How to achieve "happy sports" in practice?

What is active exercise? Active exercise means that your child spends at least 50% of his day exercising, playing games, or physical education.

According to statistics, children and adolescents spend an average of seven hours a day watching TV, playing computers, mobile phones and other electronic devices.

Lack of exercise has led to children's health problems such as being overweight and obese. Overweight adolescents have a 70% chance of becoming overweight and obese when they become adults, increasing the risk of hypertension, diabetes, and cardiovascular disease and affecting their lifelong health.

There are always difficulties for young children to participate in sports activities. Every time a child encounters a new activity he has never tried before, he or she often has to overcome his fear to complete it. Once completed, the child will experience a sense of accomplishment. Taking balance beam as an example, many children who have never walked in have not dared to go up at first. Even if they reluctantly go up, they are flustered, nervous and unsteady. In order to succeed, young children must overcome the fear and go bravely. Psychological studies have already shown that such direct and strong successful experiences will greatly encourage and stimulate children and will greatly enhance their sense of accomplishment and self-confidence.

The cultivation of a sense of accomplishment is a non-intellectual factor. It can also be said to be an “emotional quotient” and a quality that dares to overcome difficulties. Sports activities provide young children with the opportunity to overcome difficulties, make bold attempts and take risks, and develop the attitude and spirit that children are willing to explore and dare to try boldly. Therefore, daring and bold children are generally smarter. This is exactly the “very special thing” that young children can learn in sports, and this “special thing” is the basic quality that the talents can adapt to the future development.

In particular, parents should encourage children to actively try and boldly explore. In the activities, we must help children to overcome difficult problems in a timely manner so that they can achieve success and experience their ability to understand themselves through personal experience. In this way, spontaneous and active activities can be gradually changed to promote the development of children's physical and mental potential. After the child obtains a preliminary emotional understanding of a certain activity, the adult must adopt measures to increase the amount of activity or difficulty, so that the child can continue to innovate and try to let the child continue to experience their own ability and success.

Exercise - strong and healthy

1, to promote the development of intellectual level. Frequent participation in physical activity can strengthen the alternation process of the nervous system's excitement and inhibition, thus improving the balance and accuracy of the cerebral cortical nervous system, making the mind more flexible and coordinated.

2, to cultivate a good personality psychology. Participating in sports activities must overcome difficulties, abide by the rules of the competition, and restrict and control certain unfavorable personality qualities. These are the qualities necessary for the growth of children.

3, adjust emotions, enhance happiness. People who regularly participate in physical exercise, the brain secretes a substance called "innerin peptide", and the scientists call it c (Sino-Stone), which can make people feel happy. So, sports are not only physical education, It is also a strong education.

Symptomatic choice of exercise

How to choose different ways of exercise according to the child's specific situation?

● The children are not very gregarious, and are not used to interacting with peers: It is recommended to choose collective items such as football, basketball, volleyball and relay running. Some children are timid, afraid of risks and are shy: It is recommended to choose swimming, ice skating, skiing, boxing, single parallel bars, Horses, jumping boxes, balance beams and other challenging items, so as to constantly overcome the mental obstacles such as shyness, timidity, and overcome difficulties.

● Children are often hesitant and indecisive: They often bring children to participate in activities such as table tennis, badminton, tennis, boxing, hurdles, long jumps, high jumps, fencing, etc. These items have a great effect on the decisiveness of exercising children.

● Children are impatient and impulsive: It is best to bring more children to play chess, tai chi, cycling, shooting, and other activities that need to test control. These activities are good for stabilizing emotions.

● The child's self-confidence is not strong enough: You can choose to jump rope, push-ups, do exercises such as radio exercises. After exercising for a period of time, you will find that your child's self-confidence has been enhanced.

● Children can't work properly: It's easy to be nervous: Take more children to participate, watch some open and intense sports games, and exercise your ability to calmly respond to the game.

● The child is reluctant and self-confident: You can choose some difficult and more complex items such as diving, gymnastics, and marathon. You can also find a few opponents for your child so that your child can understand the truth

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Lucy Lu: The last moment to save the earth's climate

Vitality is fleeting, and it is likely to slip away from our generation. Most people don’t know, maybe don’t care, human civilization will destroy at any time

Journal reporter Peng Su intern reporter Ren Mingyuan

From Beijing

On the morning of September 15, 1971, in Vancouver, Canada, three young men boarded a boat called the Feliz Cormac.

They planned to sail to the island of Amčitka on the Arctic Ocean and expressed their strong protest against the US government's explosion of a 1 million-ton hydrogen bomb there.

At this point, the "Green Peace" global NGO officially set foot on the international stage.

"Now Greenpeace is headquartered in Amsterdam, the Netherlands, and has offices in more than 40 countries around the world. There are more than 2,000 staff and more than 3 million volunteers." The telephone to Vancouver, Greenpeace (China) ) Director Lu Siyi made a gentle introduction with Hong Kong-style Mandarin.

NGO survival space will be bigger and bigger

In 2001, Lu Siyi took a single shot from Hong Kong and arrived in Guangzhou and Beijing successively to establish the branch of International Greenpeace in China.

This year, no assistant, no formal decent office, Greenpeace (China) is working on him alone.

Prior to taking root in the mainland, he was an active social activist at the Chinese University of Hong Kong. He was experienced in various social movements such as environmental protection, labor, community, and school democratization. He studied peace and conflict, studied master's degree programs in anthropology, and He is familiar with the development of modern Chinese history and Marx's philosophy, and deeply understands the importance of the government when doing any social work in China.

However, he still has to face - "So far, China has always implemented a grey zone management method for NGO organizations. That is to implement the 'three non-policy' that does not ban, acknowledge or approve."

When they first arrived in Beijing, some media appealed to guard against certain non-governmental organizations in the West and watch out for their “velvet revolution” in China. Not to mention that government officials are reluctant to meet him. “Even if it is a friend in the field of environmental research, we all feel that we are going to pollute them,” said Lu Silu.

For some kind of competitive awareness, local NGOs will not welcome him to welcome him.

Since the international NGO organizations are still in a “defective” position, Greenpeace (China) must cooperate with institutions with legal identities to start from a specific project and gradually grow and survive.

Lu Siyi still remembers that in the three-year plan he thought deeply in that year, he wrote: “I think that China’s environmental problems will only worsen as the economy develops. The government will pay more and more attention to this issue and the NGO’s survival. Space will also grow bigger and bigger.As for Greenpeace, how can we develop our living space without impetuous?

The investigation of illegal GM rice is the first and most complicated project Greenpeace (China) does.

In 2005, when it first publicized the survey results, many NGOs did not understand why they were doing this project.

Lu Siwei's consideration is: There are multiple reasons for choosing it. First, it concerns the food, and it has to attract the attention of the government. Second, it is not sensitive. In 2001, the issue of genetically modified foods had already been discussed in the international community. Third, we can infiltrate us by making this project a success. The style of doing things, but also to provide the media with a full and complete material, so that reporters write a powerful content, get the media's trust.

In a piece of material he later forwarded, we saw that in early 2005 -

In a small restaurant in Hubei, an industry person introduced by a friend brought in a lot of new seeds. An insect-resistant rice marketing campaign from Songzi County caught our attention.

At that time, several phone calls were made by the investigators before they reached the mobile phone number of a local agricultural station. After some bargaining, the other party told investigators the number on the phone and let him secretly joint at Songzi Bus Station.

When they met, it was a shrewd middle-aged man sitting in the car. The goods were under the seat. He opened the two bags to allow the investigators to inspect the goods. The inside of each small bag was not marked with the word insect-resistant rice.

Our people said that such things could not be reimbursed when they were taken back. The other party stated on the invoice that due to national legal issues, it cannot be stated on the packaging that it is insect-resistant rice.

In order to ensure the accuracy of the investigation, relevant evidence such as audio recordings, video recordings, texts, pictures, etc. must be fully preserved. Every time our investigation requires two people to travel together. The evidence obtained does not dare to be placed around. Invoices, seeds, collected samples, to express back to Beijing. Voice data is also collated into text as soon as possible and sent to a safe place the first time. Because we must be prepared to deal with any eventuality.

The 25 samples sent to Germany for genetic testing for the first time were mostly sampled by investigators in two large grain and oil wholesale markets in Wuhan.

That time, the survey report became a hot spot for domestic and foreign media for a time. “We have pointed out through investigation that at present, China's GM rice varieties involve a number of foreign patents. Once China passes the commercial approval of genetically modified rice, it will open up for foreign biological companies. At the gate, they can control China's staple foods through the collection of patent fees and other measures, threatening China's food security."

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Feeding pigs must be "two defenses and two not feeds"

First, prevent pigs from eating grass poisoning with pesticide residues. Weeds must be kept away from orchards and crop fields. If it is necessary to collect these plots, it is necessary to know in detail the time of spraying and the drugs used in the plot. It must be exceeded. Safety interval can be used for feeding.
Second, to prevent feed moldy deterioration in summer feed green feed, it is best to pick side feed, if sometimes more than used up, should be promptly spread in a cool place, or old green feed will produce nitrite, Pigs are susceptible to gastro-intestinal disease if they eat lighter, and those who are severe may die from poisoning.
Third, do not long-term single feed and overfeed green feed Although green feed green feed has many advantages, but due to incomplete nutrient content, can not be fed alone. At the same time, we must pay attention to not overfeeding, especially piglets, when feeding large green water diet, it must be limited to prevent excessive excreta or other gastro-intestinal diseases.
Fourth, green feed should not be cooked. Many farmers raise green feeds to feed pigs. This not only reduces the original nutrients but also causes deterioration and poisoning. The correct method is: After the green feed is harvested, it should be washed and chopped or beaten first and then fed into the mixed feed directly to feed the pig. However, for the green feed with poor palatability or crude fiber content, it is best to feed after ammoniating.

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The female animal does not have estrus to try these three tricks

1, Motherwort 250 grams, decocted once a day, once a day, once every 3 days, the effect of long-term estrus mothers is better.

2, Angelica 75 grams, Chuanxiong 75 grams, 100 grams of Chen Aiye, 250 grams of Motherwort, 50 grams of Yang Qishi, grind the water once after oral administration, once a day, once every 3 days, the effect is obvious.

3, Angelica, Chuanxiong, cloves, Codonopsis, Cistanche, Gardenia, Ligustrum lucidum each 25 grams, dodder, Baba, Epimedium each 20 grams, Yang from stone 40 grams, 50 grams of Astragalus, research for the fine, warm water Take one oral dose, once daily, for 3 days.

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Smart Grid Transmission Technology and Power Equipment

The construction of smart grid grid should not only develop large-capacity long-distance and low-loss transmission technologies, but also consider the impact of large-scale intermittent new energy access on transmission networks, mainly focusing on flexible AC transmission and its corresponding flexible AC transmission equipment, , UHVDC and HTS technology. The first two involve a large number of power electronic equipment. The last one involves key technologies and equipment such as new materials and composites.

FACTS technology and equipment

Flexible AC transmission technology is a product of the combination of modern power electronics technology and power system, which is the embodiment of intelligent power equipment used in power transmission. The technology uses power electronic devices with separate or integrated functions to flexibly and quickly control the main parameters of the power transmission system such as voltage, phase difference and reactance in order to achieve reasonable distribution of transmission power, reduce power consumption and power generation costs, Dramatically improve system stability and reliability. There are more than a dozen of devices that have been successfully applied or are currently under development and research, such as SVC, STATCOM, PSS, SSSC, Unified Power Flow Control (UPFC), thyristor controlled series capacitor (TCSC), thyristor controlled reluctance reactor (TCSR) and switchable static compensator (CSC).

In recent years, this technology has been applied in important EHV transmission projects in the United States, Japan, Sweden, Brazil and other countries. However, the application of FACTS technology is still limited to individual projects. If large-scale application of FACTS devices, some global technical problems are to be solved, for example, the coordination and cooperation of multiple FACTS device control systems, the FACTS devices and existing conventional control, Electricity protection convergence problems. With the development of smart grids and the improvement of power electronics performance and cost, FACTS devices and equipment will be used in large scale in the future transmission field.

HVDC technology and equipment

HVDC is the power plant sent through the exchange of AC into DC, and then through the DC transmission line to the receiving end and then into alternating current injected into the AC power grid. The core technology of DC transmission concentrates on converter station equipment, DC converter station to achieve the DC and AC mutual energy conversion. In addition to the AC substation with the same exchange substation equipment, there are the following unique equipment, converter valve, control and protection systems, converter transformers, AC filters and reactive power compensation equipment, DC filters, smoothing reactor and DC field devices , While the commutation valve is the core equipment converter station, its main function is to AC and DC conversion, from the initial development of the mercury arc valve to the current electronically controlled and light-controlled thyristor valve, valve unit capacity is increasing.

At present, LVDT technology in HVDC (LIGHTHVDC) is currently receiving much attention. For example, onshore HVDC (HVDC) devices for offshore wind turbines, inverters can be replaced by turn-off devices such as GTOs and IGBTs to avoid the risk of commutation failure , There is no requirement on the capacity of the recipient system. The future can be used to power isolated small systems, such as offshore oil platforms and islands, or to distribute distributed power sources such as fuel cells and photovoltaic power generation in urban distribution systems, which is an important technology and equipment for the development of smart grids.

Superconducting technology and equipment

The goal of smart grids is to reduce network losses. An important goal of smart grid planning in the United States is to achieve a superconductor-based backbone network that drastically reduces network losses. Superconducting power technology is the use of superconductor unobstructed high-density current carrying capacity and the superconducting superconducting state and the normal state of the physical properties of the development of a new power technology, it is in the realization of power devices, lightweight, miniaturization, Low power consumption and improve the safety, stability and power quality of power system has important significance and broad application prospects. Superconducting technology and its development of various devices are an important part of the development of smart grid and carrier. Currently, superconducting power technology has entered a period of rapid development. Several superconducting power devices, such as superconducting cables, superconducting transformers, superconducting current limiters and superconducting magnetic energy storage systems, have been put into trial operation in power systems. Table 1 is the characteristics of superconducting power equipment and its role and impact on the power industry.

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Application of PLC in fire pump

Application of PLC in fire pump: At present, high-rise buildings are abound in various cities. In order to prevent accidental fire, high-rise buildings are generally equipped with fire pump. Although norms, rules and regulations clearly require fire-fighting facilities, equipment should be regularly maintained. However, the current fire pump can not do regular test run, over time will lead to the pump, the end of the valve and one-way valve stuck dead rust, it often appears in the event of a fire equipment can not fully play the role of the situation, resulting in not Due to the loss, for this "civil building water fire extinguishing system design rules" provides for high buildings, a class of high-rise public buildings fire pump should set the self-test device. National Fire Services Department in 1999 below requires that all fire-fighting equipment must have a self-test function, fire control equipment must be automatically activated within 15 days once to prevent corrosion of the pump rust. Another revision in the "Code for Fire Protection of Buildings" also proposed: fire water supply equipment must have automatic inspection function. Usually the old equipment adopts the backward relay contactor control mode, the intermediate relay and the timing relay are too many, the function is less, the line is complicated, the contact is many, cause the trouble more reliability is bad, the maintenance is difficult. We use Beijing Kaidian Automation Technology Co., Ltd. programmable logic controller (PLC) of the fire pump control to achieve regular standby pump test run, fire fighting automatically start, so as to effectively eliminate the fire pump can not be the key moment Used situation. The reason why PLC has vitality lies in its input and output terminals are closer to the field devices, without adding too many intermediate components or need more interfaces, high reliability, anti-interference ability, easy maintenance, no hardware adjustments Components, low price and long life. This saves users time and costs, but also can easily be expanded according to different needs. 1. Automatic patrol function Automatic (patrol switch on) Under the condition of no fire fighting water supply, the first pump starts (star) for 5-30 seconds (start time is determined by the equipment), run (triangle) 10 Seconds, standstill standby 120-360 hours (five - fifteen days). If there is no fire fighting water on standby, the second pump starts 5-30 seconds, runs for 10 seconds and stands on standby for 120-360 hours, so that it cycles cyclically (inspection cycle: from hours to hundreds of hours Select) control cabinet and with overpressure protection, from a reliable point of view, to set the pressure relief valve. In the fire water demand, the pump immediately start automatically, pressurized water supply, give full play to its role. If in order to avoid damage to the pipe network due to pressure increase, we increase the electromagnetic valve in the pipe network, open the electromagnetic valve to open the pump pressure relief inspection, inspection pump start working time is also delayed to 10 minutes. 2. Kai pump mode and sequence In the case of automatic start of multiple pumps, in order to avoid the same time put into the water pump caused too much impact on the power grid, the pump is a Taiwan 20 seconds apart from the start. Automatically start and patrol Kai pump, first issued three sound and light alarm (alarm 2 seconds interval 2 seconds), and then start the pump. The backup pump should be able to be put into operation automatically (with a delay of 10 seconds) when there is a malfunction in the working pump of the device (overload and short-circuit signals) because of the importance of the fire pump The backup pump is operated without overload protection. Starting pump frequency direct start, start from the lotus buck, Y- △ buck start, thyristor soft-start control, constant frequency control and other means to meet different requirements. For example: 2 pump start sequence 1 with 2 standby, 2 with 1 standby, two ways; 3 pump start sequence 1, 2 with 3 spare, 2,3 with 1 spare, 3,1 with 2 prepared, three ways and so on. 3. Control Panel Display In the design of automatic control system, we designed the fault display alarm system. When the device starts up, the indicator blinks at a frequency of 1 Hz. The corresponding indicator light is on in normal operation. The fault indicator is always on when the device is faulty. In order to prevent the lamp bulb damage can not correctly reflect the work of equipment, specially set the fault test button, the system is running at any time press any button 3s, all the lights should be all lit, if there are instructions, etc. do not light at that time that the light Has been bad, should be replaced immediately, the button is still reset after the indicator shows the working status of the device.

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