郑州眼部近视激光手术多少钱(郑州飞秒治疗近视) (今日更新中)

BEIJING, Nov. 22 (Xinhuanet) -- Women aged 40 to 49 are not recommended for routine mammography screening for breast cancer, said the new guidelines issued by the Canadian Task Force on Preventive Health Care in media reports Tuesday.The new guidelines are purposed to direct doctors on using mammography, MRI scans, clinical breast exams and breast self-exams. In principle, they pointed out, there is no need for women to take clinical breast exams and breast self examination if there are no signals for breast cancer.Below are the main points from the guidelines which need special attention from women with reasonable doubt on the matter:Women aged 40-49 who have lower risk for cancer should not take routine mammography because of the higher risk for overdiagnosis, overtreatment and false-positives;Women aged 50 to 69 years and aged 70 to 74 years should go for routine screening every two to three years;And there should be no routine clinical breast exams by doctors and no breast self-exams to screen for breast cancer.Dr. Marcello Tonelli, Chair of the Task Force and Associate Professor at the University of Alberta, remarked: "The main effect of screening is to produce patients with breast cancer from among healthy women who would have remained free of breast disease for the rest of their lives had they not undergone screening.""The best method we have to reduce the risk of breast cancer is to stop the screening program," he added, "This could reduce the risk by one-third in the screened age group, as the level of overdiagnosis in countries with organized screening programs is about 50 percent."

LAS VEGAS, the United States, Jan. 12 (Xinhua) -- One of the most revolutionary changes for consumers that may come out of this year's International Consumer Electronics Show (CES) will not be the electronic devices themselves, but the way they are charged.Instead of using traditional cords to power mobile phones, kitchen appliances, and even vehicles, exhibits showcasing wireless power technologies offer a glimpse into the future of how individuals can charge their devices without a plug or cord.Fulton Innovation, who develops and licenses its eCoupled intelligent wireless technology, demonstrated how the technology could be applied across a variety of usage cases at home and at work.At CES, the company announced that it is releasing its next generation wireless power solutions that incorporate near-field resonant magnetic induction, allowing devices to charge without actually touching a charging surface.Additionally, it will allow power to transfer through metal surfaces, a property which had previously been unsafe to use as a surface conductor for power.While the products with integrated eCoupled capabilities currently in the marketplace focus predominantly on smartphone charging surfaces, in part due to the low-power demands of these devices, the company said there will be more applications using this technology expected to come to market in the near future.A large part of the added production scale on the consumer level is due to the standardization of the industry.In 2010, the Wireless Power Consortium (WPC) announced the finalization of the "Qi" standard, enabling interoperability for wireless charging between a power-providing device and electronics receiving power.Currently, the Qi standard is only applicable for the wireless transmission of power up to five watts, and the WPC is undertaking steps to expand this standard to deliver up to 120 watts of power.This standardization enables technology designers like Fulton Innovations to create underlying IP designs and technologies that work across a number of OEMs.The WPC currently has over 100 member companies, including Fulton Innovation, Nokia, Samsung, Haier, and Huawei Technologies.Fulton Innovation also expects to add its eCoupled technology to cars, giving automobile manufacturers the ability to install integrated charging platforms for mobile devices without additional wires or cords.Chinese auto makers Geely, Chery, Chang'an, and Dongfeng were the first to showcase cars at a major auto show featuring Qi standard charging stations during the April 2011 Shanghai Auto Show.The WPC estimates that there will be approximately five auto manufacturers who will release cars with Qi-enabled charging capabilities either late this year or early next year.

WUHAN, Oct. 8 (Xinhua) -- A museum that honors the 1911 Revolution, also known as the Xinhai Revolution, reopened Saturday after renovation to commemorate the centenary of the uprising at Wuchang in central Hubei province.More than 200 items that illustrate the revolution, such as photos, telegraphs, models and and simulative historic scenes, are on display.Located near the famous Yellow Crane Tower, the museum was once the headquarters of the revolutionary army.The movement's leader, Sun Yat-sen, overturned the ruling Qing Dynasty (1644-1911) after the revolution on Oct. 10, 1911 and founded the Republic of China in 1912.Commemorative gatherings were also held in provinces of Guangdong, where Sun was born, and Jiangsu, where the capital of the Republic of China was located.

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.

UNITED NATIONS, Jan. 19 (Xinhua) -- China's Permanent Representative to the UN Li Baodong said here Thursday that caution should be called for in metering out sanctions in international affairs.Li made the remarks when addressing a Security Council open debate on the question of justice and rule of law."We are in favor of improving the UN sanction regime on the basis of extensive consultations so as to improve its credibility, procedures and establishing effective monitoring mechanisms and to establish strict criteria, define timelines, " Li said."Sanctions should be only carried out on basis of facts and evidence. Double standards must be avoided. Impacts against civilian lives and social economic development must be minimized," the ambassador said.Stressing that the UN chart and the fundamental principles of international law as established in it should be upheld, Li said rule of law in international relations should be strengthened.The Charter as well as principles of international law established in it constitute the call of rule of law in international relations and represents the bedrock for developing rule of law in international relations, he said."In the conduct of international relations and international affairs, adherence to the Charter and other fundamental principles of international law, such as respect for national sovereignty, non-interference in internal affairs, fulfillment in international obligation in real earnest is the essence of promotion of international rule of law," said Li.According to the Charter, UN Security Council resolutions constitute the integral part of international rule of law. Promotion of international rule of law requires strict implementation of the Security Council resolutions by member states, he added.

来源：资阳报