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？HOUSTON Authentic Trea Turner Jersey , United States, Nov. 20 (Xinhua) -- The 2015 World Weightlifting Championships kicked off here on Thursday night with a grand opening ceremony at Houston's George R. Brown Convention Center, where the nine-day competition will take place.？

？This is the first time for the United States to host such championships in over four decades. More than 600 athletes from more than 100 countries and regions, including 15 athletes from China, will compete in men's eight categories and women's seven categories.？

？Besides a full 15-member team from the United States, players from China's Hong Kong, China's Macau and Chinese Taipei will also take part in the competition Authentic Anthony Rendon Jersey , which will end on Nov. 28.

？Results from the world championships will be used along with results from the 2014 event to determine the entry slots for the 2016 Rio Summer Olympic Games.

？China, a？leading power in world weightlifting in recent years, has sent？eight male and seven female athletes to Houston.？

？Yu Jie, one of the coaches for the Chinese men's team, told Xinhua that China, which has some great athletes, are ready to make good results and even some have the ability to win gold medals.？

？""We will compete in six categories for men and seven for women Bryce Harper Jersey ,"" Yu said.？

？In addition, officials from the International Weightlifting Federation on Thursday also held an executive board session and announced that Bulgaria will not be allowed to compete in next year's Olympic Games.

？Eleven Bulgarian weightlifters, including three European champions, tested positive for the banned anabolic steroid stanozolol prior to the European championships last March.

？The executive committee also took one Olympic slot away from Romania because of ""multiple"" positive doping results.

？The first world weightlifting championships took place in London in 1891, but it had not been a formal event until 1896 when the first Summer Olympic Games was held in Athens.？？

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WELLINGTON, Oct. 12 (Xinhua) -- A New Zealand-led study has opened the way to a global approach to tackling one of the major sources of greenhouse gases, scientists at the government's AgResearch institute said Monday.

The Global Rumen Census project analyzed the microbes responsible for methane emissions from a wide range of ruminant animals around the world and found they were all similar.

Collaborating with 140 researchers from 73 institutions worldwide Max Scherzer Jersey , the AgResearch-led project found similar bacteria and methanogens dominated in almost all rumens (the foregut of ruminant animals) across a wide variety of species and animal diets.

The study team analyzed the DNA of 742 samples collected over two years, said an AgResearch statement.

As well as the expected samples from sheep, cattle, deer and goats, they also studied some from buffalo and giraffes.

Feed is fermented by the microbes in the rumen, allowing the animal to extract energy from feed such as grasses that otherwise could not be digested, so the microbes are therefore essential for ruminant productivity.

However Daniel Murphy Jersey , a by-product of the fermentation is the greenhouse gas, methane, which is produced by microbes called methanogens.

"The rumen methanogens turned out to be highly similar species in all rumens across the world," AgResearch scientist Dr Peter Janssen said in the statement.

"So, only a few species appear to be responsible for all the methane produced by ruminants everywhere, which means mitigation strategies can be developed to target the few dominant methanogens, " he said.

"That's interesting from a methane mitigation stand point because that means the technology that's developed in one place will be applicable everywhere."

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