Chinese scientists create gas detector as sensitive aa twitchs dog"s sniffer
Cityfolk Festival 2009: Dayton"s Best Music Festival
Billy Draws Two consists of Billy Horn 25 (Niagara Falls, N.Y.) , lead vocals, guitar, harmonica and songwriter, Doug Krell, 26, (Youngstown, N.Y.), rhythm guitar, backing vocals and bass, Rosie Lorentti, 20, (Lewiston, N.Y.), bass and backing vocals and piano and Chris McClellen, 23, (Buffalo, N.Y.), drums.
During the month of April, music lovers will also be treated to an eclectic mix of concerts, festivals and parties ranging from jazz to electronica to indie rock. Signature festivals include The Dinah, Palm Springs Women"s Jazz Festival, Opera in the Park, Coachella Valley festival wristbands, Stagecoach Country festival wristbands, and Brew at the Zoo.
Smith Mountain Lake is a popular destination for many local families. Some families own a second home at the lake while others sport wristbands head to the beach at Smith Mountain Lake State Park.
Just do something else. "Can"t" run for a few weeks because of a knee injury? Swim, do yoga, work on your balance and flexibility, walk your dog more often. "Can"t" make it to the gym or your exercise classes because of a change in your schedule? Do something different at home - borrow some new exercise DVDs from a friend, or sign some out from the library. Try something new.
G.I. Joe: The Rise of the Cobras: Rated PG-13 for strong sequences of action violence and mayhem throughout. Based on the Hasbro toys this is the tale of the Global Integrated Joint Operating event wristbands Entity battling Cobra a force of evil. Let"s hope this toy-based movie with the modest rating doesn"t disappoint like Transformers 2 did.
Variety - Move in a variety of ways. Think beyond "traditional" work outs and incorporate things like balance, agility, flexibility, power, speed, strength, calisthenics, "spinal hygiene", sports, dance, play, and so on. Think outside the box. There"s more to exercise (and life) than "cardio" and "resistance".
While no one knows where the price of gold is going demand is currently outstripping supply, there has never been a better time to be a gold buyer. So, get out there and turn a part time hobby into a business and buy and sell gold scrap. Rising uncertainty in the worlds financial markets are driving gold and silver higher and higher.
WASHINGTON - A team of Chinese scientists has used graphene to create an artificial gas detector that is as good as a dog"s nose.
The study, reported Wednesday in ACS Nano, a monthly scientific journal of the American Chemical Society, showed that the graphene-based nanoscrolls can mimic a dog"s sensitive sniffer, which is lined with millions of tiny capillaries.
It is well known that dogs have a better sense of smell than humans. For years, scientists have been trying to develop an artificial detector that is just as good as a canine"s nose.
Drawing inspiration from the capillary structure, researchers from South China Normal University and Beihang University found a way to modify the graphene with a polymer to make high-quality nanoscrolls.
These nanoscrolls have a large surface area like that in dog"s nose. They are stable at high temperatures, and are strong and durable.
Previous studies have produced the graphene-based nanoscrolls, which are nanosheets of graphene rolled up in continuous and uniform manner.
But they are difficult to manufacture, consume a lot of energy and difficult to scale up.
And past studies have used raw graphene or modified graphene that either left behind some unrolled structures, or shriveled up and aggregated, respectively.
The team prepared graphene-based nanoscrolls with the addition of poly or sodium-p-stryrenesulfonate, using the freeze-drying method to create uniform, unaggregated structures.
It showed that the nanoscrolls had a wide, tubular shape, and almost all of the graphene was rolled up.
The researchers then incorporated the nanoscrolls into a gas sensor, which was highly selective and sensitive.
They said that this method had the potential for large-scale production.