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阜阳算命准的地方
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发布时间: 2025-06-02 14:48:22北京青年报社官方账号
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CAIRO, July 6 (Xinhua) -- Egypt's Central Administration of Agricultural Quarantine has denied again that the country's fenugreek seeds exported to Europe caused the E.coli infections which have claimed dozens of lives.The Egyptian authorities took and analyzed fenugreek seeds samples from the warehouse of the said Egyptian exporter and all results were negative by the strain, a statement posted on the official website of Egypt's Agricultural Ministry said on Wednesday."E.coli strain has not been reported in Egypt and no illness cases have been found," it added.If fenugreek seeds sprouts are suspected to be contaminated with E.coli pathogenic strain, it could be related to different handling processes, such as the re-packing or water used for sprouting, the statement said.The European Union (EU) on Tuesday agreed to ban the import of certain types of seeds from Egypt as Egyptian fenugreek seeds were reported to be linked with the outbreak of E.coli in Europe.The European Food Safety Authority (EFSA) published early Tuesday a report from its task force on the E.coli outbreaks in Germany and France, indicating that fenugreek seeds imported from Egypt is the most likely source of the outbreaks.The E.coli outbreak has killed over 50 people in Europe since it was first reported in late May.Russia's food safety watchdog Rospotrebnadzor has also banned the import of certain types of produce from Egypt over food safety concerns, a Russian official said on Wednesday.Egypt's Ministry of Agriculture refuted the claims of Egypt being the source of E.coli Friday.

  阜阳算命准的地方   

BEIJING, Aug. 22 (Xinhuanet) -- Researchers have discovered how a human egg captures an incoming sperm for fertilization, paving the way to help couples suffering from infertility, according to media reports on Monday.An international team of researchers found that a sugar chain known as the sialyl-lewis-x sequence (SLeX) makes the outer coat of the egg “sticky,” which has proven to be helpful in binding the egg and the sperm.As a result, this observation has filled in a huge gap in the understanding of fertility and provides hope for ultimately helping couples who currently cannot conceive.Scientists and doctors know that a sperm identifies an egg when proteins on the head of the sperm match and bind to a series of specific sugars in the egg’s outer coating. With a successful match of proteins, the outside surfaces of the sperm and egg then bind together before merging, which is then followed by delivery of sperm’s DNA into egg.To identify this molecules, the researchers used ultra-sensitive mass-spectrometric imaging technology to observe and identify which molecules are most likely to be key in the binding process.They experimented with a range of synthesised sugars in the laboratory and found that it is SLeX that specifically binds sperm to an egg.According to the World Health Organisation, infertility affects about 15 percent of reproductive-aged couples around the world and almost one in every seven couples in Britain has problems conceiving a child for various reasons.

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SAN FRANCISCO, July 12 (Xinhua) -- U.S. videogame giant Electronic Arts Inc. (EA) on Tuesday said it has agreed to buy PopCap Games, a leading provider of casual games for digital platforms, in a deal to accelerate its digital transformation.EA said it will pay about 650 million U.S. dollars in cash and 100 million dollars in shares of EA common stock to acquire privately-held PopCap, the maker of blockbuster games including " Plants vs. Zombies," "Bejeweled" and "Zuma".In addition, PopCap's owners are entitled to receive as much as 550 million dollars in earn-outs if certain earnings targets are met through December 2013, according to EA, which is headquartered in Redwood City in the U.S. state of California.Logos of PopCap Games and Electronic Arts Inc."EA and PopCap are a compelling combination," John Riccitiello, EA's chief executive officer, said in a statement."PopCap's great studio talent and powerful IP add to EA's momentum and accelerate our drive towards a 1-billion-dollar digital business," he noted.PopCap is one of the largest providers of casual videogames for mobile phones, tablets, PCs and social network sites, with more than 150 million games installed and played worldwide on platforms such as Facebook, RenRen, Google, iPhone, iPad and Android.EA said the purchase of PopCap is expected to close in August this year, subject to customary closing conditions including regulatory approvals.

  

BEIJING, July 1 (Xinhuanet) -- China must adopt a holistic approach to addressing food safety challenges connected to the risk of contracting infectious diseases from contact with animals, the World Health Organization (WHO) has said. Peter Ben Embarek, food safety officer at WHO's China office, said the country faces risks connected to the need to produce more meat, eggs and milk to feed its growing population. He said the increased production will ramp up the risk of people being infected by food-borne diseases because of poor slaughtering oversight and the absence of proper surveillance and inspection systems. About 50 percent of pigs in China are slaughtered outside of formal facilities without the inspection of veterinarians or food safety officers. He said poorly trained producers have little or no awareness of food safety or the risk of animal diseases being passed on to humans. Such an environment could lead to the emergence of a new pandemic of influenza. During the past 60 years, 30 percent of the 335 new infectious diseases worldwide were transmitted through food, he said. Yet in many parts of China, public awareness remains low about such things. Xu Aixiang, a 35-year-old resident of Rizhao city in Shandong province, prefers to buy live poultry at local markets. Like many of her neighbors, she takes the chickens she buys home to slaughter them. "I get fresher chickens that are better quality this way," she said. "When vendors sell slaughtered chickens, the meat is no longer fresh and may have had water injected into it to make it heavier." But Ben Embarek cautioned that such live-animal markets are high-risk places for the exchange of viruses and diseases between animals and humans. He said simple and cost-effective measures can be taken to improve such markets' hygiene standards, such as the installation of separate areas to keep live poultry away from customers as well as improving air flow and waste management. Several UN agencies, including the WHO and the Food and Agriculture Organization, called on China to adopt an integrated approach to preventing emerging epidemic diseases and maintaining ecosystem integrity at an event themed "One Health" that convened on Wednesday in Beijing. At the gathering, representatives from the Ministry of Health, the Ministry of Agriculture and the Chinese Center for Disease Control and Prevention shared experiences from efforts to mitigate the H5N1 and H1N1 influenza outbreaks in China and said they were committed to working together in the future. Su Jingliang, an associate professor of preventive veterinary medicine at China Agricultural University, said his lab had detected the outbreak of a new type of flavivirus in ducks that led to a significant fall in egg production at farms in Beijing as well as in Hebei, Jiangxi and Shandong provinces. The pandemic was brought under control in March. No cases of humans contracting the disease have been reported so far but Su said he was concerned about the possibility of farmers becoming infected through close contact and long exposure to sick ducks. He said precautionary measures should be taken in cooperation with the Ministry of Health and other government agencies and checks should be run on people who are at high risk. Xu Wei contributed to this story.

  

LOS ANGELES, July 3 (Xinhua) -- Warming of the ocean's subsurface layers will melt underwater portions of the Greenland and Antarctic ice sheets faster than previously thought, increasing the sea level more than already projected, a new study suggests.The subsurface ocean layers surrounding the polar ice sheets will warm substantially as global warming progresses, according to the study led by researchers from the University of Arizona (UA).In addition to being exposed to warming air, underwater portions of the polar ice sheets and glaciers will be bathed in warming seawater, said the study appearing on the website of the American Association for the Advancement of Science (AAAS) on Sunday.The research, based on 19 state-of-the-art climate models, proposes a new mechanism by which global warming will accelerate the melting of the great ice sheets during this century and the next."To my knowledge, this study is the first to quantify and compare future ocean warming around the Greenland and the Antarctic ice sheets using an ensemble of models," said lead author Jianjun Yin, a UA assistant professor of geosciences.According to the study, the subsurface ocean along the Greenland coast could increase as much as 3.6 F (2 C) by 2100.Most previous research has focused on how increases in atmospheric temperatures would affect the ice sheets, he said."Ocean warming is very important compared to atmospheric warming because water has a much larger heat capacity than air," Yin said. "If you put an ice cube in a warm room, it will melt in several hours. But if you put an ice cube in a cup of warm water, it will disappear in just minutes."Given a mid-level increase in greenhouse gases, the researchers found the ocean layer about 650 to 1,650 feet (200 to 500 meters) below the surface would warm, on average, about 1.8 F (1 C) by 2100. Along the Greenland coast, that layer would warm twice as much, but along Antarctica would warm less, only 0.9 F (0.5 C)."No one has noticed this discrepancy before -- that the subsurface oceans surrounding Greenland and Antarctica warm very differently," Yin said.Part of the warming in the North comes from the Gulf Stream carrying warm subtropical waters north. By contrast, the Antarctic Circumpolar Current blocks some of the subtropical warmth from entering the Antarctic's coastal waters.Even so, the Antarctic ice sheet will be bathed in warming waters, according to the study.This paper adds to the evidence that sea level would rise by the end of this century by around one meter and a good deal more in succeeding centuries, the study noted.The study, "Different Magnitudes of Projected Subsurface Ocean Warming Around Greenland and Antarctica," is scheduled for the upcoming edition of Nature Geoscience later this month.

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