Herzlich Willkommen » kets made from leather are not goin

BELGRADE Femme Nike Air VaporMax Hyper Punch Pas Cher , April 11 (Xinhua) -- Belgrade Children Marathon Saturday gathered 130 fastest kids from the country's preschool institutions and kindergartens for the final showdown at Belgrade Zoo, Serbia.


Held for the 22 consecutive years, Belgrade Children Marathon is a chance for the fastest kids of five to six years old to compete among themselves to the interest of many of their young friends Homme Nike Air VaporMax BHM Noir Blanche Pas Cher , parents, teachers as well as children with disabilities.


Competitors divided into 12 groups run at the 230 meter track around the elephant's space at the Zoo, and the winner of each group comes to the "super final".


Among the groups Homme Nike Vapormax Pale Grise Chaussures Pas Cher , the first one consists of children with disabilities who finish the run with the help of their families.


Six-year-old Filip Rajicevic, who won the race in just 37 seconds, said quietly and in confusion after crossing the finish line that he is happy to be the fastest and that he practiced very hard.


"It's not easy to beat the others. I don't know how I did it. I was evidently faster Homme Nike Air VaporMax Chaussures Noir Pas Cher ," he only mumbled trying to catch a breath.


Dejan Nikolic, director of the Belgrade Marathon, said that the event was held because sport education is important for children of this age Homme Nike Air VaporMax Laceless Black Night Noir Pas Cher , and that in the past two decades around 350,000 kids went through competitions in order to qualify to the Belgrade Children Marathon.


"Children in this age easily get interested in sports. It is important to keep them interested afterwards. Professional clubs begin working with kids at the age of nine," he said Homme Nike Air Vapormax 2018 Chaussures Noir Pas Cher , stressing the importance to work with them even in preschool and kindergartens.


Nikolic said that the 130 competitors were selected among 16,000 kids in pre-qualifications, and that the aim is to promote sport to the youngest so that some of them would become professional sportsman Homme Nike Vapormax Collegiate Marine Chaussures Bleu Pas Cher , while others to create a habit to practice some kind of sport activity.


All participants were awarded with diplomas and medals and gifts from sponsors of UNICEF and the foundation of the world's leading tennis player Novak Djokovic.




SAN FRANCISCO， Jan. 11 (Xinhua) -- Bioengineers at Stanford University in west coast of the United States have created an ultra-low-cost， hand-powered blood centrifuge with rotational speeds of up to 125，000 revolutions per minute (rpm).


The device， capable of separating blood plasma from red cells in 1.5 minutes， applies the same mechanical principles in a whirligig， which is built by threading a loop of twine through two holes in a button， grabbing the loop ends， then rhythmically pulling. As the twine coils and uncoils， the button spins at a dizzying speed.


In the case of "paperfuge，" which is built from paper worth 20 U.S. cents， the spin can exert centrifugal forces of 30，000 Gs.


"To the best of my knowledge， it's the fastest spinning object driven by human power，" said Manu Prakash， an assistant professor of bioengineering at Stanford University and senior author of a paper published in the Jan. 10 issue of Nature Biomedical Engineering.


"There are more than a billion people around the world who have no infrastructure， no roads， no electricity. I realized that if we wanted to solve a critical problem like malaria diagnosis， we needed to design a human-powered centrifuge that costs less than a cup of coffee."


A centrifuge is critical for detecting diseases such as malaria， African sleeping sickness， human immunodeficiency virus (HIV) and tuberculosis.


Inspired by spinning toys， Prakash began brainstorming design ideas with Saad Bhamla， a postdoctoral research fellow in his lab and first author on the paper. After weeks of exploring ways to convert human energy into spinning forces， they began focusing on toys invented before the industrial age as yo-yos， tops and whirligigs.


"One night I was playing with a button and string， and out of curiosity， I set up a high-speed camera to see how fast a button whirligig would spin. I couldn't believe my eyes，" said Bhamla， when he discovered that the whirring button was rotating at 10，000 to 15，000 rpms.


After two weeks of prototyping， he mounted a capillary of blood on a paper-disc whirligig and was able to centrifuge blood into layers.


With further improvements， the low-cost version is expected to enable precise diagnosis and treatment in the poor， off-the-grid regions where these diseases are prevalent.


"From a technical spec point of view， we can match centrifuges that cost from 1，000 to 5，000 U.S. dollars，" Prakash was quoted as saying in a news release from Stanford.

Options For Gaining Your Business Bachelor Degree Online