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CAPE CANAVERAL, Florida, April 29, (Xinhua) -- NASA on Friday delayed space shuttle Endeavor's launch to no earlier than Monday afternoon due to technical problems with heaters in the shuttle's auxiliary power unit."Shuttle Endeavor's launch now no earlier than Monday at 2:33 p. m. EDT (1833 GMT)," NASA said. "Engineers need that time to troubleshoot an issue that resulted in today's launch scrub."During Friday's countdown, engineers detected a failure in one of two heater circuits associated with Auxiliary Power Unit (APU) 1. Heaters are required to keep the APUs' hydrazine from freezing on orbit.Space shuttle Endeavour sits on the launch pad at the Kennedy Space Center at Cape Canaveral, Florida,  April 28, 2011. The Endeavor is scheduled for a Friday afternoon launch.U.S. President Barack Obama, touring storm damage in Alabama on Friday, had been expected to attend the planned 3:47 p.m. (1947 GMT) launch. Obama will still visit Cape Canaveral and then travel to Miami, where he is scheduled to speak at a community college commencement.Endeavor's 14-day mission will deliver the Alpha Magnetic Spectrometer-2 (AMS) to the International Space Station. AMS, a particle physics detector, is designed to search for various types of unusual matter by measuring cosmic rays.Its experiments are designed to help researchers study the formation of the universe and search for evidence of dark matter, strange matter and antimatter. Endeavor also will fly the a platform that carries spare parts that will sustain space station operations once the shuttles are retired from service.The mission will feature four spacewalks to do maintenance work and install new components. These are the last scheduled spacewalks by shuttle crew members.Endeavor, which has been promised to the California Science Center in Los Angeles upon its return, was the replacement ship for Challenger, which was lost in a 1986 explosion as it ascended over the Atlantic that killed seven astronauts.It will be the second of NASA's three surviving shuttles to be retired. Sister ship Discovery, which will be transferred to the Smithsonian National Air and Space Museum, completed its last flight in March.Atlantis' final launch is scheduled for June 28. When the U.S. space shuttle program officially ends later this year, the Russian space program's Soyuz capsule will be the only method for transporting astronauts to and from the station.

BAODING, Feb. 2, (Xinhua) -- All-out efforts should be made to combat drought for a summer grain harvest, said Chinese President Hu Jintao Wednesday in an inspection tour to north China's Hebei Province."We need to adopt comprehensive measures to ensure supply of capital, technologies, facilities and materials to enable winter wheat to safely grow through the winter," said Hu, when inspecting drought conditions at a wheat field in Xishanbei Township of Baoding City, Hebei.Over the past three months, North China has been hit by severe drought, seriously threatening normal agricultural production.Hu, who is also general secretary of the Communist Party of China (CPC) Central Committee and chairman of the Central Military Commission, made the inspection visit in Baoding from Tuesday to Wednesday, to welcome the Spring Festival, or China's Lunar New Year, with local officials and residents.Hu beat a drum together with villagers during a new year celebration in Shijiatong Village, Xishanbei Township of Baoding.The president visited the home of Yan Deshu, an aged CPC member in the village, and pasted the Chinese character "Fu", meaning fortune and happiness, on the gate of Yan's yard.Hu also visited a long-distance coach station in Baoding, and extended Spring Festival greetings to passengers, station workers and volunteers.Hu inspected a unit of armed police in Baoding and made Chinese dumplings together with the officers and soldiers.

BEIJING, Feb. 2 (Xinhua) -- Two more planes flew 435 more Chinese back home from Egypt Wednesday afternoon.An airliner with 213 Chinese from Cairo landed at the Beijing Capital International Airport at 2:19 p.m., and another with 222 Chinese including many Hong Kong people from Luxor landed at a Hong Kong airport at 3:25 p.m..These flights were another strive of the Chinese government and airline operators to get stranded Chinese nationals out of Egypt, where anti-government demonstrations have led to chaos in several major cities including Cairo.So far, 1371 stranded Chinese had been taken home by six flights.

XI'AN, Feb. 21 (Xinhua) -- Nearly 100 children were sickened by food poisoning Monday noon at a kindergarten in northwest China's Shaanxi Province.The accident occurred at Zhaocun Beibeile Kindergarten at Weiyang District of the provincial capital Xi'an City, where the children suffered from nausea and diarrhea after lunch, said a spokesman from the Weiyang District Government.The sickened children were rushed to five local hospitals for treatment, and their conditions were reported as not life threatening, the spokesman said.An initial inspection showed that their sickness was caused by nitrite intoxication, and the exact cause is under investigation.

LOS ANGELES, May 8 (Xinhua) -- Kids born in the spring and summer months might be more likely to develop celiac disease, U.S. researchers have found.Researchers from the Massachusetts General Hospital for Children drew the conclusion after examining data on 382 children diagnosed with celiac disease at between 11 months and 19 years of age, HealthDay News reported on Sunday.The study found that in the 15- to 19-year-old set, birth season appeared to make no difference, but among 317 children younger than 15 years of age, 57 percent were born in the "light" season of March through August, compared with 43 percent who were born in the "dark" season of September through February.The findings suggest that the higher incidence of this autoimmune disease may be related to a combination of seasonal and environmental factors, the report said.Celiac disease is a digestive disorder triggered by consuming the protein gluten, which is primarily found in bread and other foods containing wheat, barley or rye. It can damage the small intestine and make it difficult to absorb certain nutrients, causing problems ranging from abdominal pain to nerve damage.Even though the exact cause of celiac disease is unknown, potential triggers include the timing of infants' introduction to gluten, and viral infections contracted during the first year of life.The study's findings suggest the season of a child's birth is another potential risk factor for the disease.The researchers pointed out that infants are generally introduced to solid foods containing gluten at around six months of age, which for spring and summer babies would coincide with cold and flu season.Based on the findings, the age at which gluten is first offered to some babies may need to be altered, said the study's lead researcher, Dr. Pornthep Tanpowpong. "If you're born in the spring or the summer, it might not be appropriate to introduce gluten at the same point as someone born in the fall or winter," said Tanpowpong. "Although we need to further develop and test our hypothesis, we think it provides a helpful clue for ongoing efforts to prevent celiac disease."The study also noted that exposure to sunlight may also play a role in celiac disease, since vitamin D deficiency has been associated with the disease.The study was presented Sunday in Chicago during Digestive Disease Week, an international gathering sponsored by the American Gastroenterological Association and other organizations, HealthDay News said.Because the study was presented at a medical meeting and is small, its findings should be considered preliminary until published in a peer-reviewed journal and confirmed in other research, the report said.