天津武清区龙济几点开门(天津市武清区龙济男科医院做) (今日更新中)

BEIJING, Oct. 18 (Xinhuanet) -- Some seaweeds can kill the reef-building corals around them by emitting anti-coral chemicals, a new study found.The study was published Monday in the online edition of the journal Proceedings of the U.S. National Academy of Sciences (PNAS).The researchers investigated the interactions between eight different species of seaweed and three species of coral growing in the waters nearby the Fiji Islands, and identified a class of anti-coral organic compounds known as terpenes.These chemicals, found on the surfaces of several species of seaweed, can kill the coral by suppressing its photosynthesis.The finding suggests that the living space competition with seaweeds could be a factor of the coral's worldwide decline.Plant-eating fish normally controls seaweed growth on coral reefs, but the populations of these consumers are declining by the overfishing, which eventually resulted in the seaweed's dominant position, according to the researchers.Despite overfishing, pollution and warming oceans are also the contributors to coral's worldwide decline, said Jennifer Smith, a marine ecologist at the University of California, San Diego.

BEIJING, Jan. 5 (Xinhua) -- Chinese media organizations on Thursday unveiled the top 10 domestic and international news events of 2011.The selection of news events, the eighth of its kind in China, was jointly carried out by 46 major online media providers, including people.com.cn and Xinhuanet.com.The following are the top 10 domestic news events of 2011:-- China launched a series of tough government measures to cool off the property market, including higher mortgage rates, a ban on third-home mortgage loans and purchase restrictions. The State Council, or China's Cabinet, introduced a policy package urging enhanced efforts to ensure the healthy development of the property sector and to promote the construction of affordable housing units for low-income families.-- More than 90 central government departments publicized their 2010 and 2011 spending on government-funded overseas travel, receptions and official cars upon an order issued after an executive meeting of the State Council in May.-- China's amended Criminal Law criminalized all drunk driving incidents starting May 1. The previous law imposed criminal penalties on drunk drivers only when they caused serious traffic accidents.-- Food safety scandals erupted in great number in 2011. Authorities busted farmers for adding clenbuterol, a known carcinogen, to pig feed in order to grow leaner pigs.-- In a speech delivered on July 1 at a ceremony marking the 90th founding anniversary of the Communist Party of China (CPC), Hu Jintao, general secretary of the CPC Central Committee, hailed the Party's achievements and stressed efforts for the future development of the country and the Party.-- On July 23, a high-speed train rammed into a stalled train near the city of Wenzhou in the eastern province of Zhejiang, leaving 40 dead and 191 injured.-- The launch and safe return of the Shenzhou-8 unmanned spacecraft marked the successful completion of China's first space docking mission, with the spacecraft docking with the Tiangong-1 space lab module.-- A gathering was held on Oct. 9 to commemorate the 100th anniversary of China's 1911 Revolution, which ended 2,000 years of imperial rule in the country by toppling the Qing Dynasty.-- The 17th Central Committee of the CPC concluded its sixth plenary session in October, adopting a landmark guideline for improving the nation's cultural soft power and promoting Chinese culture. The CPC Central Committee also pledged enhanced efforts to promote the healthy and positive development of Internet culture.-- Ethics and morality were heavily discussed in the public sphere, with two incidents stoking debate. In July, a woman in east China's city of Hangzhou caught a two-year-old girl who plunged from the window of a 10th-floor apartment, winning praise from people across the country. However, in late August, a bus driver in east China's Jiangsu province stopped to save an old woman who was hit by a three-wheeled vehicle, only to find himself held accountable for the accident.The following are the top 10 international news events of 2011:-- Strong turbulence was encountered by several countries in western Asia and northern Africa.-- On March 11, a 9.0-magnitude earthquake struck Japan and triggered a huge tsunami, killing over 15,000 people and causing radioactive leaks from several reactors at the Fukushima Daiichi nuclear power plant.-- On May 1, U.S. Navy commandos killed al-Qaida leader Osama Bin Laden in a cross-border raid at Abbotabad.-- On July 10, Rupert Murdoch's News International company closed its News of the World tabloid after it was accused of hacking the mobile phones of dead crime victims to access saved messages.-- With the world economy staggering under the European and U.S. debt crises, the Occupy Wall Street movement was launched on Sept. 17, protesting corruption and greed in the financial sector.-- Apple co-founder and longtime Chief Executive Officer Steve Jobs passed away in October at the age of 56 after years of fighting pancreatic cancer.-- On March 19, NATO launched airstrikes in Libya to impose a no-fly zone under a UN Security Council resolution. On Oct. 20, Libya's former leader Muammar Gaddafi was killed as his hometown of Sirte fell to rebel forces.-- A report published by the UN Population Fund showed that the world's population reached 7 billion on Oct. 31, 2011.-- On March 7, U.S. credit rating agency Moody's Investors Service downgraded the credit rating of the Greek sovereign debt to B1, marking the start of the European sovereign debt crisis and worsening the economic situation in the eurozone.-- Kim Jong Il, the top leader of the Democratic People's Republic of Korea (DPRK), died on Dec. 17, 2011 from "a great mental and physical strain."

SAN FRANCISCO, Nov. 4 (Xinhua) -- Google is mulling a plan to offer paid cable-TV services to consumers, a move that could flare up a new wave of competition in the traditional TV business, U.S. media reported on Friday.According to The Wall Street Journal, the Internet search giant has considered adding video and phone services to a previously announced high-speed Internet service in two U.S. cities.People briefed on the plan told the newspaper that Google has discussed distributing major TV channels from companies like Walt Disney, Time Warner and Discovery Communications as part of the video service. The discussions were still exploratory and no final decisions have been made, said the report.Google said it does not comment on rumor or speculation.Whether it is a speculation or not, the reported plan reflects possible innovation and revolution for the traditional TV experience with the growth of high-speed Internet, which may become another lucrative battlefield all the technology giants will fight for.With the growth of home and mobile broadband services, more and more video contents become available for rental, purchase and streaming on desktop computers, tablet computers and smartphones.Competitions on the video streaming market have been increasingly fierce this year, among such services as Apple's iTunes, Amazon's Prime Video, NetFlix, Hulu Plus and Vudu, which is owned by Wal-Mart.Cable companies, facing a grim picture of being kicked out in the decades to come, also fought back with their own mobile apps and online streaming services.A new Steve Jobs biography revealed that the late Apple co- founder had been working on an Apple television."It would be seamlessly synced with all of your devices and with iCloud. It will have the simplest user interface you could imagine. I finally cracked it," Jobs told biographer Walter Isaacson in the book.Some analysts said the introduction of an Apple smart TV could bring a 100-billion-U.S.-dollar revenue opportunity for the Cupertino, California-based company.Last Friday, Google-owned YouTube announced a plan to launch 100 channels on its site with original professionally produced content. A new version of Google TV was also launched with new search tools that expand results from shows on cable to web-based services like NetFlix and Amazon.

WASHINGTON, Nov. 24 (Xinhua) -- A new study suggests that the rate of global warming from doubling of atmospheric carbon dioxide may be less than the most dire estimates of some previous studies.Authors of the study, which was funded by the National Science Foundation and published online on Thursday in the journal Science, say that global warming is real and that increases in atmospheric CO2 will have multiple serious impacts. However, the most Draconian projections of temperature increases from the doubling of CO2 are unlikely."Many previous climate sensitivity studies have looked at the past only from 1850 through today, and not fully integrated paleoclimate date, especially on a global scale," said Andreas Schmittner, an Oregon State University researcher and lead author on the Science article. "When you reconstruct sea and land surface temperatures from the peak of the last Ice Age 21,000 years ago -- which is referred to as the Last Glacial Maximum -- and compare it with climate model simulations of that period, you get a much different picture.""If these paleoclimatic constraints apply to the future, as predicted by our model, the results imply less probability of extreme climatic change than previously thought," Schmittner added.Scientists have struggled for years trying to quantify "climate sensitivity" -- which is how the Earth will respond to projected increases of atmospheric carbon dioxide. The 2007 IPCC report estimated that the air near the surface of the Earth would warm on average by two to 4.5 degrees (Celsius) with a doubling of atmospheric CO2 from preindustrial standards. The mean, or " expected value" increase in the IPCC estimates was 3.0 degrees; most climate model studies use the doubling of CO2 as a basic index.The researchers based their study on ice age land and ocean surface temperature obtained by examining ices cores, bore holes, seafloor sediments and other factors. When they first looked at the paleoclimatic data, the researchers only found very small differences in ocean temperatures then compared to now."Our study implies that we still have time to prevent that from happening, if we make a concerted effort to change course soon," said Schmittner.

BEIJING, Jan. 21 (Xinhua) -- As the Chinese Spring Festival travel rush enters its peak period, more work staff and transport resources have been deployed to ensure safe and convenient transport during the world's largest annual human migration.At 8 a.m. on Jan. 20, two days ahead of the Chinese New Year, Dong Leihong, duty officer at the road network center with the Ministry of Transport (MOT), sat before a huge monitoring screen that displayed real-time highway transport conditions nationwide."Good news! The fog has almost all lifted. Only some local lines in Shanxi province have been blocked by snow. Road transport in the country's other regions is normal," Dong said.The screen showed that some work staff at local toll stations in Shanxi were clearing away the snow, while vehicles were running smoothly despite rain on a section of the Shanghai-Kunming Highway located in eastern Jiangxi province.About 840,000 passenger cars were put into service to meet the day's road travel demand, MOT Spokesman He Jianzhong said at the center. An estimated 82.9 million passenger trips by bus were recorded that day, an increase of 10.8 percent from a year earlier.Passenger trips are expected to rise 9.1 percent year-on-year to hit 3.16 billion during this year's festival travel period, prompting the country's transport system to mobilize more resources.Moreover, the railway, aviation and public security sectors have also adopted multiple measures to embrace the heat of the ongoing 40-day travel rush that started on Jan. 8.At Beijing Railway Station's control center, where the exact information of the location and speed of an operating train as well as train failures is available, more than 80 dispatchers were hired to coordinate the operations of passenger and cargo trains running in north China.Meanwhile, large numbers of police, railway workers and volunteers worked in the whipping winter wind to help with boarding at Beijing West Railway Station.The country required all train ticket buyers to register with their names and have their ID cards checked prior to boarding, a real-name system introduced to stem ticket scalping that has plagued the Spring Festival travel rush for years.Counters dealing with domestic flights also extended service hours at the Beijing Capital International Airport, and more staff members were on site to help with security checks, said Li Guanghui, the airport's general manager.The airport saw about 140,000 departure passengers on Jan. 20, an increase of 29 percent from a year earlier, according to Li.To help road travellers deal with emergencies, the Ministry of Public Security established 8,300 service stations nationwide to provide car repair, medical care, rest and guidance services.Some local transport departments also prepared drinking water, food, and cotton clothes to ensure supplies in case of traffic jams on highways.The local traffic police department in Zhaoqing, a city in southern China's Guangdong province, set up 17 rest stops for long-distance motorcyclists at several national highways that pass through the city.The move aims to provide food and other emergency services for the 20,000 people that travel by motorcycle on these highways each day during the festival travel rush.The Spring Festival, or "Chunjie" in Chinese, is a time for family reunions. It is the country's most important festival.

来源：资阳报