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BEIJING, Feb.14 (Xinhua) - Shanghai General Motors Co. will recall 2,806 imported Cadillac CTS vehicles in China to repair faulty track bars to prevent safety risks, China's quality watchdog said on Monday.The recall, which is set to begin on March 21, includes models that were produced between June 16, 2008 and April 20, 2009, the General Administration of Quality Supervision, Inspection and Quarantine said in a statement on its website.The statement said that the company would repair or replace the rear suspension track bars of the recalled vehicles because some nuts on the bars are likely to loosen and cause worn screw threads.This could lead to a loosened track bar under extreme conditions, which is unsafe when traveling fast, it said.The company is to contact car owners to provide free checks and repairs. Owners may also contact the automaker on its free phone service (telephone number: 8008201902) for more information and to make appointments.

BEIJING, Feb. 10 (Xinhua) -- First snow fell in Beijing Wednesday night and continued into Thursday morning. It was the latest first snow for the city in 60 years.Beijing has had no precipitation for 108 consecutive days this winter.Local meteorologists said from 8:00 Wednesday to 6:00 Thursday, precipitation in Beijing averaged 1 mm."Now there is snow at last. I love the taste of snow." "The world in pure white! It's the most beautiful landscape in winter." Beijing residents who stayed late in the night and happened to see the first flakes of snow in the city left their postings on microblogs.However, meteorologists said the first snow won't last long and it will end on Thursday noon. In midnight, the city will have a cloudy weather, and Friday will be a sunny day."As the precipitation is small, it will have limited effect on easing drought," Song Jisong, the municipal meteorological bureau's chief weather forecaster said.Sun said that the capital city's record-long winter drought occurred in the winter of 1970/71, when there was no precipitation for 114 days. This winter drought was the second longest in 60 years.Meteorologists said the current snowfall will reduce risks of fire.The snow also affected the city's traffic. Local traffic control authorities estimated that there were more than 40 highways on which vehicles ran at a speed lower than 20 km per hour in the rush hour Thursday morning.The authorities said an emergency headquarters had been set up for the snow weather. Expressways connecting Beijing with Chengde, Tianjin and Tibet will likely have some sections closed for the time being.A spokesperson with the Beijing Capital International Airport Co., Ltd. said that by 6:00 a.m. Thursday, runways at the airport had operated normally, and take-offs and landings had been normal, with no flights delayed.The airport has also launched an emergency scheme. At last 64 ice removal vehicles had been arranged to ensure the normal operaton of flights.Wednesday also saw snowfall and sleet in Gansu, Shaanxi, Shanxi, Henan and Anhui provinces and rainfall in the Yellow River and Huaihe River valleys, southwestern regions and the middle-and-lower reaches of the Yangtze River valley. And snow and rainfall will continue in the those areas Thursday.

WELLINGTON, May 13 (Xinhua) -- While it's long been known that a little sunshine can spread happiness, researchers in New Zealand have found that it can also save the lives of pneumonia patients.Medical scientists have found that vitamin D, which is absorbed through the skin and produced with exposure to sunlight, is a major factor in the survival rate of pneumonia patients.Researchers at Waikato University collaborated with doctors at Waikato Hospital, both Hamilton-based institutions, to study blood samples of 112 patients admitted to the hospital with pneumonia during the winter.They found that those with severe vitamin D deficiency 17 of the patients were more likely to die within a month, compared with patients with normal or slightly low vitamin D levels.Dr Bob Hancox, of the hospital's department of respiratory medicine, said five of the 17 died, a 29-percent mortality rate, compared with four deaths among the 95 patients with higher vitamin D levels, a 4-percent mortality rate."The analysis confirmed that the difference in mortality rates between the two groups was very unlikely to be due to chance," Hancox told Xinhua.Vitamin D deficiency was a concern around the world, Hancox said."Sunlight is the main source of vitamin D, so it tends to be a winter problem in temperate climates when people spend a lot of time indoors. But it occurs in all countries and vitamin D deficiency is believed to be a major problem worldwide."There is accumulating evidence that we need vitamin D to help fight infections, such as pneumonia as we have shown, as well as improve bone health," he told Xinhua."What is not yet clear is whether we can do anything about it. We don't know whether treating people with vitamin D supplements would help to prevent or treat respiratory infections. This is what we need to find out now."Dr Ray Cursons, of the Biological Sciences department at Waikato University, said patient age, sex, additional health conditions, and other prognostic factors did not affect the research outcome, although researchers still could not establish a causal link between vitamin D deficiency and mortality in the patients.Waikato Hospital D respiratory specialist Dr Noel Karalus said it was not yet known whether giving patients vitamin D supplements after their admission to hospital with respiratory tract infections would alter outcomes."It may transpire that vitamin D helps us avoid infection rather than cure it once established."Cursons said the best source of vitamin D was sunlight as dietary sources such as fatty fish and cod liver oil did not contain enough vitamin D."There is still some controversy regarding the optimal daily allowance of vitamin D. How much we absorb through the skin depends on sun exposure, skin type and geographical latitude. M ori and Pacific Islanders absorb less because of their darker skin, and people in colder climates also have lower levels of vitamin D. "Pneumonia is the single largest cause of death in children worldwide, killing an estimated 1.6 million children under the age of five each year, according to the World Health Organization.The research findings are published in the journal Respirology, published by the Asian Pacific Society of Respirology, this month.

LOS ANGELES, April 3 (Xinhua) -- People with lower levels of vitamin D are more likely to have stiffer arteries and an inability of blood vessels to relax, U.S. researchers have found.This finding also applies to people who are in general good health, according to researchers from the Emory University School of Medicine.The researchers presented their findings on Sunday at the annual American College of Cardiology meeting in New Orleans.Impaired vascular health in correlation with lower vitamin D levels contributes to high blood pressure and the risk of cardiovascular disease, the researchers say.The study involved 554 participants, with the average age of 47 and generally healthy.The average level of 25-hydroxyvitamin D (a stable form of the vitamin reflecting diet as well as production in the skin) in participants' blood was 31.8 nanograms per milliliter. In this group, 14 percent had 25-hydroxyvitamin D levels considered deficient, or less than 20 nanograms per milliliter, and 33 percent had levels considered insufficient, less than 30 nanograms per milliliter.The researchers monitored the ability of participants' blood vessels to relax by inflating and then removing a blood pressure cuff on their arms. To allow blood to flow back into the arm, blood vessels must relax and enlarge -- a change that can be measured by ultrasound. The researchers also made other measurements of smaller blood vessels and examined the resistance to blood flow imposed by the arteries.

BEIJING, March 17 (Xinhuanet) -- A new study has shown that gene therapy can reduce symptoms in patients with Parkinson's, media reports said Thursday.The study, published in the journal Lancet Neurology, is the first to show positive results in a test of gene therapy against a sham operation in 45 U.S. Parkinson's patients.The treated group showed a 23.1 percent improvement on a scale of Parkinson's symptoms six months after treatment, compared to a 12.7 percent improvement for patients who received sham surgery, according to the published research."Gene therapy is no longer just a theory," said Michael Kaplitt, a neurosurgeon at New York-Presbyterian Hospital and Weill Cornell Medical Center, and one of the study authors. "We are getting much closer to a reality where this treatment can be offered to patients."In patients with Parkinson's disease, their brains get overactive after losing the normal supply of a chemical called GABA. The new treatment, gene therapy, works by inserting billions of copies of a gene into patients' brains that helps them produce more GABA.Kaplitt said the results might spur similar treatments for other brain disorders like Alzheimer's, epilepsy and depression.