young enthusiasts

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SAN FRANCISCO， May 19 (Xinhua) -- Researchers at Stanford University have designed a home urine test that uses a black box and a smartphone camera to help analyze a standard medical dipstick. The dipstick test， or color-changing paper test， was invented to test blood sugar in 1956. It now involves a paper strip with 10 square pads. Dipped in a sample， each pad changes color to screen for the presence of a different disease-indicating chemical. After waiting the appropriate amount of time， a medical professional or， increasingly an automated system， compares the pad shades to a color reference chart for results. The test seems simple， but do-it-yourself systems on the market can be error prone， said Audrey Bowden， assistant professor of electrical engineering at Stanford. "You think it's easy -- you just dip the stick in urine and look for the color change， but there are things that can go wrong. Doctors don't end up trusting those results as accurate." Considering the dipstick as a given， Bowden and Gennifer Smith， a PhD student in electrical engineering， designed a system to overcome three main potential errors in a home test: lighting， volume control and timing. As a color-based test， the dipstick needs consistent lighting conditions. The same color can look different depending on its background， so Smith and Bowden created a black box that covers the dipstick. Its flat， interlocking parts make it easy to mail， store and assemble. They tackled volume control. "If you have too little or too much urine on the dipstick， you'll get erroneous results，" Smith said. To fix this， they designed a multi-layered system to load urine onto the dipstick. A dropper squeezes urine into a hole in the first layer， filling up a channel in the second layer and ten square holes in the third layer. When the third layer is inserted into the black box， a uniform volume of urine is deposited on each of the ten pads at just the right time. Then， a smartphone is placed on top of the black box with the video camera focused on the dipstick inside the box. Custom software reads video from the smartphone and controls the timing and color analysis. To perform the test， a user would load the urine and then push the third layer into the box. When the third layer hits the back of the box， it signals the phone to begin the video recording at the precise moment when the urine is deposited on the pads. Timing is critical to the analysis. Pads have readout times ranging from 30 seconds to 2 minutes. Once the two minutes are up， the user can transfer the recording to a software program on their computer. For each pad， it pulls out the frames from the correct time and reads out the results. Writing in Lab on a Chip， a journal of the Royal Society of Chemistry， the researchers said they would like to design an app that would do the analysis on the phone and then send results directly to the doctor. by Jon Day TOKYO [url=http://www.superstarskotilbud.com/dame-adidas-nmd-xr1-lyserod-sko-tilbud-danmark.html]Dame Adidas NMD XR1 Lyserød Sko Tilbud Danmark[/url] , Feb. 5 (Xinhua) -- Kazuhiro Kiyohara is a household name in Japan with his many accomplishments as a former professional baseball player continuing to inspire a young generation of pro baseball wannabes, as Kiyohara has been an example of how hard work and dedication as a youth can make dreams come true. So it stands to reason that his arrest earlier this week and him testing positive for illegal stimulant drug use Friday has sent shock waves through the baseball and wider community here, with many concerned that the scandal could have a wide-reaching impact on youngsters here. Kiyohara is no stranger to controversy, and over the past few years has been accused and implicated in scandals involving drug use [url=http://www.superstarskotilbud.com/adidas-nmd-xr1-sort-sko-tilbud-danmark.html]Adidas NMD XR1 Sort Sko Tilbud Danmark[/url] , but has always denied the allegations. The accusations peaked after he was hospitalized in the spring of 2014, but he maintained he was receiving treatment for diabetes and fobbed off other accusations, saying he was receiving medicine to treat flu. And while the iconic former star may have adopted something of a "bad boy" image during his days as a player spanning 23 seasons in Japan's Nippon Professional Baseball league, he has always stood as an example and [url=http://www.superstarskotilbud.com/adidas-nmd-xr1-hvid-gra-sko-tilbud-danmark.html]Adidas NMD XR1 Hvid Grå Sko Tilbud Danmark[/url] , hence a role model, for youngsters of how, if they too can shine as a player in national high school tournaments, maybe they too could be drafted into a team like the Seibu Lions as Kiyohara was in 1985. "It's not just about baseball or (Kazuhiro) Kiyohara particularly [url=http://www.superstarskotilbud.com/adidas-nmd-racer-primeknit-dame-hvid-tilbud.html]Adidas NMD Racer PRIMEKNIT Dame Hvid Tilbud[/url] , it's about the responsibility that comes with being successful or famous and being in the public eye. Yes, Kiyohara officially retired in 2008, but he has appeared on TV in variety shows and in magazines and remains an iconic character in the hearts and minds of the nation," anthropologist and sessional lecturer [url=http://www.superstarskotilbud.com/herre-adidas-nmd-racer-sort-hvid-udsalg.html]Herre Adidas NMD Racer Sort Hvid Udsalg[/url] , Keiko Gono, told Xinhua. "And with baseball being the country's national sport, a lot of youngsters look to the successes of former stars with the belief that they can do the same, and this is [url=http://www.superstarskotilbud.com/adidas-dame-superstar-slip-on-bla-hvid-sko-tilbud-danmark.html]Adidas Dame Superstar Slip On Blå Hvid Sko Tilbud Danmark[/url] , naturally, encouraged by parents, teachers and coaches. "'If you want to be the next Ichiro Suzuki, Yu Darvish or Masahiro Tanaka (all of whom have payed overseas in the U.S. Major League Baseball (MLB) [url=http://www.superstarskotilbud.com/adidas-superstar-80-s-3d-metal-toe-dame-sort-sko-tilbud-danmark.html]Adidas Superstar 80's 3d Metal Toe Dame Sort Sko Tilbud Danmark[/url] , you need to practice more, train harder, believe in yourself,' they'll say." Gono went on to explain that despite the image of the "salaryman culture" here in Japan [url=http://www.superstarskotilbud.com/dame-adidas-superstar-supercolor-lyserod-sko-tilbud-danmark.html]Dame Adidas Superstar Supercolor Lyserød Sko Tilbud Danmark[/url] , children having lofty dreams is something that's really encouraged in homes and at schools and a lot of time from elementary school through to university is dedicated to sports, with some young enthusiasts, in fact, spending more time on sports fields than they do in classrooms. "So for someone with the celebrity gravitas of Kiyohara to be embroiled in a drug scandal is of real concern [url=http://www.superstarskotilbud.com/adidas-superstar-supercolor-sort-sko-tilbud-danmark.html]Adidas Superstar Supercolor Sort Sko Tilbud Danmark[/url] , more so of late because a number of celebrities have been embroiled in drug-related scandals recently, including former girl-next-door pop star Noriko Sakai, and Shigeaki Miyazaki better know as ASKA fr. 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