梅州孕前患有阴道炎怎么办梅州怀孕两个月怎么无痛人流,梅州现在人流要多少钱,梅州隆鼻一共多少钱,梅州哪家医院妇科好,梅州咨询急性尿道炎,梅州微管无痛人流手术时间,梅州流产什么时候做好

LOS ANGELES, April 20 (Xinhua) -- Hundreds of homes were evacuated on Wednesday in Monument, U.S. state of Colorado after hydrochloric acid was leaking from a train car, authorities said.The leak was first reported around 1 a.m. local time when a southbound train spotted a vapor trail on a northbound train, the Denver Post reported.Authorities first ordered the evacuation of some 255 homes, and later expanded the evacuation to an additional 160 homes, according to the report.Schools in the area were closed due to the leaking, the report said.A specialized crew from Texas has been dispatched to the scene to transfer the hydrochloric acid leaking from the train car and is expected to finish the job in four or five hours, weather permitting, the report quoted Sgt. Mike Schaller of the El Paso County Sheriff's Office as saying.The leak is contained but hydrochloric acid is still leaking slowly from the tanker, which holds 25,000-30,000 gallons, Schaller said.He said police went door-to-door notifying residents of a subdivision adjacent to the railroad tracks to evacuate as a precaution.No injuries have been reported, he said, but residents have been warned that they may have to be out of their homes until Friday as hazardous material crews offload the acid to another container.The northbound train originated in Kansas and was en route to Denver at the time, the Denver Post said.It's not yet known how much hydrochloric acid leaked from the train car.Once the leak is sealed, crews will remove the hydrochloric acid from the damaged car to a new car that will likely continue into Denver, according to the report.Monument is a town of 3,230 residents 88 kilometers south of Denver.

BAIKONUR, Kazakhstan, April 5 (Xinhua) -- Russian manned spacecraft Soyuz TMA-21 has been transported to the launch pad and raised to a vertical position, ready to blast off on April 5, Xinhua correspondents reported Saturday from the site.The launch is dedicated to the 50th anniversary of the first flight into space in 1961 carried out by Russian cosmonaut Yuri Gagarin.For hours, journalists and tourists from all over the world had braved a nasty weather and watched the train and trucks delivering the rocket to the pad.Service towers move towards the Soyuz TMA-21 spacecraft, named after the first cosmonaut Yuri Gagarin, as it is set on its launch pad at Baikonur cosmodrome April 2, 2011. The International Space Station (ISS) crew of U.S. astronaut Ronald Garan and crew mates Russian cosmonauts Alexandr Samokutyaev and Andrey Borisenko is due to travel by Soyuz spacecraft to the ISS on April 5.The Soyuz TMA-21 rocket will deliver three crew members to the International Space Station (ISS) on April 5. In a six-month mission, these cosmonauts will carry out over 40 experiments.The Soyuz TMA modification is a replacement of the Soyuz TM as it was equipped with smaller and more efficient computers and improved displays. The Soyuz TMA-21 will also serve as the return vehicle of the ISS crew.

WASHINGTON, May 2 (Xinhua) -- Rice originated in China, a team of U.S. genome researchers has concluded in a study tracing back thousands of years of evolutionary history through large-scale gene re-sequencing.Their findings, which appear Monday in the latest issue of the Proceedings of the National Academy of Sciences (PNAS), indicate that domesticated rice may have first appeared as far back as approximately 9,000 years ago in the Yangtze Valley of China. Previous research suggested domesticated rice may have two points of origin -- India as well as China.Asian rice, Oryza sativa, is one of world's oldest crop species. It is also a very diverse crop, with tens of thousands of varieties known throughout the world. Two major subspecies of rice -- japonica and indica -- represent most of the world's varieties. Sushi rice, for example, is a type of japonica, while most of the long-grain rice in risottos are indica.Because rice is so diverse, its origins have been the subject of scientific debate. One theory -- a single-origin model -- suggests that indica and japonica were domesticated once from the wild rice O. rufipogon.Another -- a multiple-origin model -- proposes that these two major rice types were domesticated separately and in different parts of Asia. The multiple-origin model has gained currency in recent years as biologists have observed significant genetic differences between indica and japonica, and several studies examining the evolutionary relationships among rice varieties supported more than domestication in both India and China.In the PNAS study, the researchers re-assessed the evolutionary history, or phylogeny, of domesticated rice using previously published datasets, some of which have been used to argue that indica and japonica rice have separate origins. Using more modern computer algorithms, however, the researchers concluded these two species have the same origin because they have a closer genetic relationship to each other than to any wild rice species found in either India or China.In addition, the study's authors examined the phylogeny of domesticated rice by re-sequencing 630 gene fragments on selected chromosomes from a diverse set of wild and domesticated rice varieties. Using new modeling techniques, which had previously been used to look at genomic data in human evolution, their results showed that the gene sequence data was more consistent with a single origin of rice.In the study, the investigators also used a "molecular clock" of rice genes to see when rice evolved. Depending on how the researchers calibrated their clock, they pinpointed the origin of rice at possibly 8,200 years ago, while japonica and indica split apart from each other about 3,900 years ago. The study's authors pointed out that these molecular dates were consistent with archaeological studies.Archaeologists have uncovered evidence in the last decade for rice domestication in the Yangtze Valley beginning approximately 8, 000 to 9,000 years ago while domestication of rice in the India's Ganges region was around about 4,000 years ago."As rice was brought in from China to India by traders and migrant farmers, it likely hybridized extensively with local wild rice," explained New York University biologist Michael Purugganan, one of the study's co-authors. "So domesticated rice that we may have once thought originated in India actually has its beginnings in China."

FUZHOU, Feb. 5 (Xinhua) -- A minibus rolled over and fell into a reservoir in Shaowu City in southeast China's Fujian Province Friday afternoon, killing 10, local officials said early Saturday morning.Nine people were rescued, and two were still missing.The minibus bound for Shaowu from Yong'an lost control at 5:27 p.m. Friday when the driver apparently tried to avoid a motorbike. It fell into the Qianling Hydropower Station reservoir, according to officials with Nanping city government.About 200 police and rescuers were still looking for the missing people, and the investigation into the accident is underway.