濮阳东方医院妇科咨询专家(濮阳东方医院男科治疗早泄口碑很好放心) (今日更新中)

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.

JERUSALEM, May 8 (Xinhua) -- Israeli researcher Jacob (Koby) Scheuer, from the Tel Aviv University (TAU) School of Electrical Engineering, has developed a nano-scale gyroscope, the Ha'aretz daily reported Sunday.Scheuer developed a new optic-fiber nano-sensor four years ago, along with an optic gyroscope that works in conjunction with the sensor. As he developed the devices, it occurred to him that his discovery could be harnessed to surgical needs, virtual reality, or communications, said the report."What we developed here is an optic gyroscope," Scheuer told Xinhua in a recent interview on Sunday, "like the others, but the breakthrough is that we found a way to measure rotation in a very, very small device using the optic sensor."Optic gyroscopes emit light when they rotate, and change its wavelength when there is any change in the speed of rotation, making it possible to measure velocity and position by the differences in light.Scheuer's gyroscope, however, is so small in comparison to the others commonly used in planes, trains and vehicles, that it can be used in cell phones or watches and does not need satellite connection like the ubiquitous Global Positioning System.The applications of this gyroscope and optic sensor are almost endless, as Scheuer puts it."It can be a pill that you swallow and can move through your body to take pictures or release drugs in a localized area," the researcher explained, "or it can be used by a doctor to operate on a patient who is thousands of kilometers away.""Our gyroscope has complete independent navigation capability, which the others don't have," he stressed.Though the new optic gyroscope works in theory, it still hasn't been tried in out in reality. "It will take some time until we can empirically demonstrate our work, I would say about three to five years," Scheuer added.Alongside the gyroscope, Scheuer continues to work on the optic sensor, whose applications can also be found in security, such as an information security system developed by Scheuer to safeguard online information that acts as a key bearer."When both parties have 'the key' it's virtually impossible to hack the information sent," Scheuer noted, terming the development as a "total paradigm change."

VIENNA, March 18 (Xinhua) -- The 26th Annual Congress of the European Association of Urology (2011 EAU congress) kicked off on Friday at the Vienna Austria Center in the Austrian capital Vienna.About 14,000 doctors, experts, scholars and representatives of pharmaceutical enterprises in the field of urology from more than 80 countries took part in the event, which will last till Tuesday.The EAU congress is Europe's largest fair in the field of urology. This is the third time for Vienna to host the event.The EAU congress aims to review technical innovation and technological progress in the field of urology and related subspecialties, discuss new theories, new technologies and new diagnostic methods of urological clinical trials, optimize the risk management of urological disease, and enhance doctors' practical knowledge and skills by educational activities.It also provides an important platform for related pharmaceutical, medical equipments and medical consumables manufacturers to present their latest products and technologies, and creates the opportunity of face-to-face communication between suppliers and consumers.The highlights of this year's EAU congress include the discussion of state-of-the-art kidney imaging and the application of ultrasound, computerized tomography (CT-scan) and magnetic resonance imaging (MRI).Participants are also expected to give a timely overview on the role of imaging, focal therapy and kidney biopsy in the management and follow-up of small renal masses, as well as the use of imaging in the management of urinary incontinence and other pelvic urinary pathologies.Congress organizers said that more than 200 presentations and seminars are scheduled during the five-day meeting, with an estimated 400 speakers unveiling their latest findings.

BEIJING, Feb. 17 (Xinhua) -- The Communist Party of China (CPC) Central Committee on Thursday night hosted a gala to celebrate the traditional Lantern Festival.Chinese President and General Secretary of the CPC Central Committee Hu Jintao and eight other members of the Standing Committee of the Political Bureau of the CPC Central Committee attended the event, along with representatives from Beijing's intellectual circle.The eight CPC leaders included Wu Bangguo, Wen Jiabao, Jia Qinglin, Li Changchun, Xi Jinping, Li Keqiang, He Guoqiang and Zhou Yongkang.The gala was presided over by Li Changchun, who extended warm regards to the participants on behalf of the CPC Central Committee.Mentioning 2010 as an extraordinary year for China's development, Li said the CPC Central Committee, with Hu Jintao as the General Secretary, led the Party and nation to successfully host the Shanghai World Expo and Guangzhou Asian Games.

WASHINGTON, Feb. 4 (Xinhua) -- Major trading partners of the United States, including China, did not manipulate their currencies to gain an unfair advantage in international trade in 2010, according to a report released by the U.S Treasury Department on Friday."Based on the resumption of exchange rate flexibility last June and the acceleration of the pace of real bilateral appreciation over the past few months," China's behavior did not qualify under the official definition of manipulation, the Treasury said in its long-delayed semiannual report to the Congress on International Economic and Exchange Rate Policies.With respect to exchange rate policies, ten economies were reviewed in this report, accounting for nearly three-fourths of U. S. trade. Many of the economies have fully flexible exchange rates. A few have more tightly managed exchanges rates, with varying degrees of management."No major trading partners of the United States" met the standards identified by the Congress as currency manipulator, concluded the report.Since the June 19, 2010 announcement by China's central bank of greater exchange rate flexibility, its currency, also known as renminbi (RMB) has appreciated 3.7 percent against the dollar, or about 6 percent annualized. The renminbi has appreciated 26 percent in total against the dollar since 2005.The Treasury said that because inflation in China is significantly higher than it is in the U.S., the RMB has been appreciating more rapidly against the dollar on a real, inflation- adjusted basis, at a rate which if sustained would amount to more than 10 percent per year.The U.S. accuses Beijing of keeping its currency undervalued, flooding the country with cheap exports and costing U.S. jobs. But many economists believe that the appreciation of RMB will help little to the U.S. employment."Treasury today again made the right call on China's currency policy in its latest exchange rate report," John Frisbie, President of the U.S.-China Business Council (USCBC) said in a statement after the U.S. Treasury Department'report."While USCBC believes that China should allow its exchange rate to better reflect market forces, designating China as a ' manipulator' would achieve nothing. USCBC continues to support the Obama administration's approach of combined multilateral and bilateral engagement with China as the most effective way to make progress on the exchange rate issue."

来源：资阳报