许昌高三重读哪里有怎么样莲湖高一学校哪里有专业,西安高中排名,陕西封闭学校正规联系方式,秦都区高考高中哪里好,雁塔区高三复读专业怎么样,漯河应届生专业多少钱,焦作中考补习哪里有怎么办

WASHINGTON, Jan. 2 (Xinhua) -- A systematic review of previous studies suggests that there may be a positive connection between physical activity and children's academic performance, according to a report published Monday in the Archives of Pediatrics & Adolescent Medicine.A group of scientists at the Vrije Universiteit (Free University) Medical Center in the Netherlands reviewed evidence on the relationship between physical activity and academic performance because of concerns that pressure to improve test scores may often mean more instructional time for classroom subjects with less time for physical activity.The authors identified 10 observational and four interventional studies for review, 12 of which were done in the United States, one in Canada and one in South Africa. Sample sizes ranged from 53 to about 12,000 participants between the ages of eight years and 18 years old. Follow-up varied from eight weeks to more than five years."According to the best-evidence synthesis, we found strong evidence of a significant positive relationship between physical activity and academic performance. The findings of one high-quality intervention study and one high-quality observational study suggest that being more physically active is positively related to improved academic performance in children," the report said.Background information in the article suggests that exercise may help cognition by increasing blood and oxygen flow to the brain, increasing levels of norepinephrine and endorphin to decrease stress and improve mood, and increasing growth factors that help create new nerve cells and support synaptic plasticity."More high-quality studies are needed on the dose-response relationship between physical activity and academic performance and on the explanatory mechanisms, using reliable and valid measurement instruments to assess this relationship accurately," the report concluded.

COPENHAGEN, Nov.23 (Xinhua) -- Denmark's new tax on fatty foods is having little impact on consumer habits, an opinion poll showed Wednesday.Only seven percent of those polled said they had changed their shopping habits since the tax was imposed Oct.1, said FDB Analyse, which conducted the poll for Danish news agency Ritzau.The world's first fat tax affects products containing more than 2.3 percent saturated fat, meaning a kilo of saturated fat costs 16 Danish kroner (2.87 U.S. dollars).As a result, butter, cream, cheese, meat, cooking oil and processed foods like pizza and biscuits are among thousands of products that have become dearer in recent weeks.However, two out of three respondents to the poll said price rises are too low to make them alter their dietary habits, an opinion shared by some in the food retail sector."Price rises per product vary from a few oere to 2 kroner (0.36 U.S. dollar)," said Mogens Werge, Director of Consumer Policy at Coop, a supermarket chain which accounts for 40 percent trade in basic daily goods in Denmark."No Danes will change their dietary habits just because the cost of a packet of cookies rises by 35 oere," he told DR News, Denmark's public broadcaster.The Danish Agriculture and Food Council, an industry association, says the fat tax costs a Danish family with two children an additional 1,000 kroner (180 dollars), per year.Reacting to the poll, the Social Democratic Party (SDP), which leads Denmark's coalition center-left government, said the fat tax must be given more time to take effect."There are several parameters to measure the tax, one of which is purely economic, where you have to consider a longer time period," SDP consumer affairs spokesperson Mette Reissmann, told DR News."Also, I never thought we would suddenly become a nation that rejects fatty foods. It takes a long time to change consumer behavior," she added.The government's Commission on Prevention, tasked with finding ways to improve the nation's health, also said it is too early to evaluate the fat tax's impact. It believes the tax discourages purchase of unhealthy foods, and will help raise average Danish life expectancy by one week.For their part, two-thirds of poll respondents suggested the government would do better by removing value added tax (VAT) on healthy foods like fresh fruit and vegetables, and instead raise it on food products containing fat and sugar.Denmark already imposes 25 percent VAT on most consumer goods and food products.

BEIJING, Dec. 14 (Xinhua) -- China's new yuan-denominated lending in November rose 7.8 billion yuan (1.2 billion U.S. dollars) year-on-year to 562.2 billion yuan, the People's Bank of China, the central bank (PBOC), announced Wednesday.New loans in the month were smaller compared to that in October, which stood at 586.8 billion yuan.By the end of November, the outstanding broad money supply (M2), which covers cash in circulation and all deposits, rose 12.7 percent year-on-year to 82.55 trillion yuan, according to data released by the PBOC.Meanwhile, the narrow measure of money supply (M1), which covers cash in circulation plus demand deposits, increased 7.8 percent year-on-year to 28.14 trillion yuan by the end of last month, the figures showed.New yuan deposits last month fell sharply to 324.7 billion yuan, down 262.6 billion yuan year-on-year. Outstanding yuan-denominated deposits totaled 79.51 trillion yuan as of the end of last month, up 13.1 percent year-on-year, however, the growth rate was 6.5 percentage points lower compared to the same period last year.Meanwhile, outstanding foreign currencies-denominated deposits stood at 266.8 billion U.S. dollars, up 12.9 percent year-on-year. New deposits of foreign currencies rose 4.1 billion U.S. dollars year-on-year.

WASHINGTON, Jan. 19 (Xinhua) -- New research published this week in Nature Medicine indicates that targeted drugs such as gefitinib might more effectively treat non-small cell lung cancer if they could be combined with agents that block certain microRNAs.The study, led by investigators with the Ohio State University Comprehensive Cancer Center, shows that overexpression of two genes called MET and EGFR causes the deregulation of six microRNAs, and that this deregulation leads to gefitinib resistance.The findings support the development of agents that restore the levels of these microRNAs. It offers a new strategy for treating non-small cell lung cancer, which is responsible for about 85 percent of the 221,000 lung-cancer cases and 157,000 deaths that occur annually in the United States. It also suggests that measuring the expression levels of certain microRNAs -- those controlled by the MET gene -- might predict which lung-cancer cases are likely to be resistant to gefitinib.Epidermal growth factor receptor (EGFR) is frequently overexpressed in non-small cell lung cancer, and this leads to uncontrolled cell proliferation. Gefitinib selectively inhibits EGFR activation and triggers cancer cells to self-destruct by apoptosis. However, non-small cell lung cancer cells inevitably develop resistance to the drug. The study reveals how this resistance occurs."Our findings suggest that gefitinib resistance that is caused by MET overexpression is at least partly due to miRNA deregulation, " says principal investigator Carlo Croce.

BEIJING, Dec. 26 (Xinhua) -- China has launched a one-year inter-agency national campaign aiming to return most street children home, the Ministry of Civil Affairs (MCA) said Monday.The MCA will lead the campaign, which is joined by the ministries of education, public security, financial, health, human resources and social security, and housing and urban-rural development, an MCA statement said."We will try our best to identify most street children in cities and send them home by the end of 2012," the statement said.Minister Li Liguo of Civil Affairs said, ministries concerned should strengthen communication and coordination, and speed up the revision of regulations on the relief of city beggars and vagrants.The MCA also urged provincial governments to set up special offices coordinating the campaign. Several provinces, such as Hebei and Yunnan, have been working on this, the statement said.Police will step up their efforts to identify and rescue street children who wander near railway stations, major tourist sites, business areas and subway stops, while civil affairs departments will assist investigation and provide shelter for homeless children, the statement said.Urban communities and neighborhoods are asked by the ministry to report homeless children to local police. Police and civil affairs departments will cooperate to ascertain the whereabouts of their parents or guardians.In home places of street children, education departments are urged to send them to schools or vocational schools, and those from needy families will have their tuition reduced or waived.Health departments are required to offer street children easy access to medical facilities in emergency cases. Hospitals listed in the campaign will treat sick street children free of charge.