陕西回流生正规专业(阎良区高二专业会吗) (今日更新中)

BEIJING, Dec. 28 (Xinhuanet) -- A vagrant boy sat all huddled up in a corner of Beijing Railway Station, trying to keep himself warm in the chilly wind on Tuesday afternoon.He could only remember that he was 16 and that his home was far away from Beijing but failed to provide other vital information such as his name or home address.Two officials from the social assistance center for the homeless in Beijing's Dongcheng district came to his assistance within half an hour of receiving a passer-by's call. The boy was taken to the center's office for some paper work and then sent to a shelter for the homeless in Fengtai district.A teenager, unsure of his identity and living on a street corner near Beijing Railway Station, is helped by China Daily photographer Wang Jing on Tuesday before being taken to a care center."Our center handles about three or four similar cases every month. Those whose family cannot be contacted immediately are sent to the shelter," said Cao Hui, an official who came to the railway station to pick up the boy.The method of collecting vagrants and sending them to shelters would include an extra step by 2013, according to a notice jointly issued by eight government departments, including the Ministry of Civil Affairs (MCA), on Monday.The circular required the public security, urban management authorities and rescue centers nationwide to collect blood samples from vagrant children. Their DNA information will be recorded and checked against the national DNA database to see if these could be matched with that of missing children's parents', in case they were kidnapped or stolen by criminals.The eight government departments will start a year-long national campaign in 2012, aiming to return street children to their homes, which will be led by the MCA.The MCA urged provincial governments to set up special offices to coordinate the campaign.Civil Affairs minister Li Liguo said on Monday that the ministry will speed up revising the management regulations related to the homeless and beggars in cities, introduced in 2003. Detailed rules about how different government departments should cooperate with each other to help vagrant children would be formulated in the revised regulation.The notice also urged the civil affairs authorities to organize social workers to provide one-on-one psychological counseling and aid services to street children.Educational authorities in locations where the vagrant children are originally from are required to facilitate their returning to schools or vocational institutions. Those from poor families can have their school fees reduced or waived.Yu Jianrong, a professor with the Chinese Academy of Social Sciences and an initiator of a grassroots campaign to help child beggars, begun in January, applauded the government's consistent efforts to help street children to resume a normal life."The notice definitely shows the government's determination to keep children away from begging or performing on the street.""However, seeing no vagrant children on the street doesn't mean all problems have been solved. The government should make more efforts to improve the social security network for children," he added.Ablikim has been working with a non-governmental organization in Urumqi of Northwest China's Xinjiang Uygur autonomous region that has helped about 300 children - originally from Xinjiang who turned up on the streets of more prosperous cities, begging and picking pockets - to reunite with their families or put them in child rescue centers.The 27-year-old Uygur volunteer, urged the police to carefully check the identities of adults who brought several children to the railway station or bus stops, as they could well be human traffickers.

WASHINGTON, Oct. 3 (Xinhua) -- Researchers at St. Michael's Hospital in Canada have discovered a new function for an enzyme that may protect against organ injury and death from anemia, according to a study appearing Monday in the U.S. journal of the Proceeding of the National Academy of Sciences.Researchers found that when people have anemia, neuronal nitric oxide synthase (nNOS) -- an enzyme in nerve cells that produces nitric oxide, an important signaling molecule in the body -- increases the body's ability to respond, adapt to low oxygen levels and makes the body more efficient in delivering oxygen to tissues. They also found that levels of nNOS in the brain increased in anemic mice, and that the mice without this enzyme die earlier, and with higher hemoglobin levels."Identifying this mechanism may lead to new therapies and approaches to improving outcomes for anemic patients," said Dr. Greg Hare, a researcher at the Li Ka Shing Knowledge Institute of the hospital and one of the lead investigators of the study.Anemia occurs when blood has a lower than normal number of red blood cells or hemoglobin -- an iron-rich protein that carries oxygen from the lungs and heart to the rest of the body. Cells need oxygen to survive and to produce energy for all bodily functions. The condition has many different causes including infection (malaria, HIV, parasites), nutritional deficiencies (iron, folate, B12), genetic mutations, pregnancy, trauma and surgical blood loss."This research will help us identify when an anemic patient is at greatest risk for injury and death when undergoing surgery," said Hare. "Research is underway to test these findings in humans."

BEIJING, Dec. 4 (Xinhua) - Orthopaedic experts have warned that China should improve its prevention of orthopaedic illnesses as its population ages.Osteoporosis, bone fractures and joint diseases, to which elderly people are particularly susceptible, have surged as serious health concerns, said Feng Huicheng, surgeon-in-chief of a leading Chinese orthopaedics hospital, at the Sixth International Congress of the Chinese Orthopaedic Association (COA) Sunday in Beijing.According to China's latest census in 2010, the number of people aged 60 and over stood at 177.65 million and accounted for more than 13 percent of the country's total 1.3 billion population."Orthopaedic diseases pose a great threat to the elderly, and they'll only grow more serious as we have a large population that is aging," said Dr. Feng from the No. 309 Hospital of the People's Liberation Army."The younger generation should start to be concerned with their health now, particularly calcium loss, to prevent osteoporosis when getting old.".A report issued by the International Osteoporosis Foundation this year shows that about 70 million people in China now suffer from the condition and that number may leap to 286 million by 2020.H.K.T.Raza, president of the Asia Pacific Orthopaedic Association, said at the conference that the prevention of osteoporosis should begin when people are still young."Osteoporosis is best prevented by regular exercises and good dietary controls. All that has to be done early in life, maybe between 20 and 30, to prevent the disease," he said.According to the World Health Organization, osteoporosis remains one of the primary threats to the health of the middle-aged and elderly.Osteoporosis is the thinning of bone tissue and loss of bone density over time. Parts of the bone grow weak and prone to fracture. Women are usually subject to greater risk of osteoporosis than men as they start with lower bone density and lose bone mass faster as they age. 

WASHINGTON, Nov. 18 (Xinhua) -- The U.S. Food and Drug Administration (FDA) on Friday revoked its approval of Avastin for treating the breast cancer after concluding that the drug has not been shown to be safe and effective for that use.Avastin will still remain on the market as an approved treatment for certain types of colon, lung, kidney and brain cancer."After reviewing the available studies it is clear that women who take Avastin for metastatic breast cancer risk potentially life-threatening side effects without proof that the use of Avastin will provide a benefit, in terms of delay in tumor growth, that would justify those risks," FDA Commissioner Margaret Hamburg said in a statement. "Nor is there evidence that use of Avastin will either help them live longer or improve their quality of life. "Avastin's risks include severe high blood pressure; bleeding and hemorrhaging; heart attack or heart failure; and the development of perforations in different parts of the body such as the nose, stomach, and intestines.Avastin was approved for metastatic breast cancer in February 2008 under the FDA's accelerated approval program, which allows a drug to be approved based on data that are not sufficiently complete to permit full approval. After the approval, the drug's sponsor, Genentech, completed two additional clinical trials and submitted the data from those studies to the FDA. These data showed only a small effect on tumor growth without evidence that patients lived any longer or had a better quality of life compared to taking standard chemotherapy alone -- not enough to outweigh the risk of taking the drug.FDA's Center for Drug Evaluation and Research, which is responsible for the approval of this drug, ultimately concluded that the results of these additional studies did not justify continued approval and notified Genentech it was proposing to withdraw approval of the indication.Genentech did not agree with the Center's evaluation of the data and, following the procedures set out in FDA regulations, requested a hearing on the Center's withdrawal proposal, with a decision to be made by the Commissioner. That two-day hearing, which took place June 28-29, included recommendations from the FDA 's Oncologic Drugs Advisory Committee, voting 6-0 in favor of withdrawing approval of Avastin's breast cancer indication.

WASHINGTON, Nov. 14 (Xinhua) -- Vitamin D levels are significantly lower in patients with recurrent inflammatory spinal cord disease, according to a study published online Monday in Archives of Neurology.Vitamin D is a steroid vitamin that promotes the intestinal absorption and metabolism of calcium and phosphorus. In recent years, low levels of vitamin D have been linked to a variety of autoimmune conditions, including multiple sclerosis (MS). However, the importance of vitamin D in monophasic or recurrent non-MS spinal cord diseases including transverse myelitis and neuromyelitis optica is unknown, according to background information in the article.Transverse myelitis (TM) is a disease of the spinal cord in which there is involvement of the myelin sheath that protects nerve fibers; symptoms include back pain and weakness in the legs. Neuromyelitis optica (NMO) is a disease of the central nervous system that affects the optic nerves and spinal cord.Maureen Mealy, of Johns Hopkins University and colleagues investigated the association between low serum vitamin D levels and recurrent spinal cord disease. They analyzed data on vitamin D levels among 77 patients with monophasic (having only one phase or stage) and recurrent inflammatory diseases of the spinal cord, adjusting for season, age, sex, and race. The study found that vitamin D levels were significantly lower in patients who developed recurrent spinal cord disease."Our findings suggest that there may be an association between lower total 25-hydroxyvitamin D levels in patients with recurrent TM/NMO/ spectrum disorders as compared with their counterparts with monophasic disease," the authors report. They suggest that future studies are needed to further assess the relationship between vitamin D and recurrent spinal cord disease.

来源：资阳报