Tag: "touching" at biology news

Touching research: How white blood cells navigate

... other officers to pursue the target. The physical touching between the cells and the lining is crucial. "This is your first line of defense against disease," says Richard Waugh, Ph.D., chair of the Department of Biomedical Engineering and leader of the team of engineers and scientists who received the grant...

Stimulating nerve cells with laser precision

...ing a leg or even individual toes without actually touching the nerve cells. "This technique brings nerve stimulation out of the Dark Ages," said Vanderbilt Assistant Professor of Biomedical Engineering and Neurological Surgery Anita Mahadevan-Jansen. "Much work is going on around the world trying to make...

Marsh-dwelling mole gives new meaning to the term 'fast food'

...continually survey their environment by repeatedly touching the objects around them with their star appendages...e moles' actions, the researchers found that after touching a small piece of food they took an average of 230 milliseconds to identify it as edible and eat it. ...

Positive air pressure chamber started with patients quickly after surgery

...eel of astronauts walking on the moon, feet barely touching the ground, freed of gravitational pull. The Orthopaedics Surgery resident weighs 240 pounds, but the scale on the treadmill only senses 40 of them, thanks to the buoyancy created by the chamber's positive air pressure. Moon's gravity is one-sixth ...

Clearing the air on airplane cabin air

...within the aircraft cabin. Direct contact, such as touching common surfaces, sneezing, coughing and talking with an infected individual on an airplane, can transmit infections. Proximity to an infected individual increases risk more than the duration of a flight. Infectious disease specialists recommend that ...

Scientists use gene transfer technology and common virus to block neuropathic pain

...h rats and people, scientists measure allodynia by touching the skin with a series of filaments or exposing the skin to small amounts of moderate heat. People with neuropathy perceive the filament's touch or heat as a painful sensation. Rats with neuropathy will lift their paw if the filament or heat produces...

Researchers get first peek at amyloid's spine

... only the ends of the side chains reaching out and touching each other, they way they do in the DNA double helix. Instead, she found interdigitated connections akin to zippers and Velcro. "This gives a structural explanation about why the fibers grow almost infinitely, and why prions are infectious," said Ro...

San Francisco State University receives JavaOne award

...dfolded people trying to understand an elephant by touching just the tail, trunk and leg. This new technology has the potential to put into place a much more pervasive measurement capability, allowing us to get access to details and understanding that is not possible today." This project was made possible by ...

Trio of plant genes prevent 'too many mouths'

...ensely covered with stomata that most stomata were touching each other. These genes appear to have roles at two points in the production of stomata. First, they inhibit undifferentiated cells those unspecialized cells that have yet to turn into specific cell types from making too many stomata and then they...

Primate virus jumps species barrier to humans for first time in Asia

...casionally engage in other risky behavior, such as touching animals or trying to hold baby monkeys. Limiting such behavior can reduce the risk of bites and scratches. "If you look at free-ranging monkeys in Singapore's nature reserves, you see that feeding by visitors is not allowed, and it is actively discou...

Rare bird 'sings' with its feathers to attract a mate

...the move would be analogous to leaning forward and touching elbows and pinkies behind one's back. After careful analysis, Bostwick determined that special inner (or secondary) feathers rub together to make the sound. Each wing has one feather with a pick, or a small blade, and an adjacent feather with ridges ...

Cracking the perception code

...e July 31, 2005. Neuroscientists already knew that touching the skin with a vibrating object causes specialized sensory neurons in the brain to fire, and that firing of these neurons, which are found in a region of the brain known as the primary somatosensory cortex, is directly related to monkeys' ability to...

Feeling fat in the festive season? It's all in your mind

...ven though it remained stationary. With their hand touching their waist, volunteers felt their wrists bending into their body, creating the illusion that their waists were shrinking. During the tendon exercise, all 17 participants felt that their waist had shrunk by up to 28 percent. The researchers found hi...

Not just the birds

... many cases, a small island with a large perimeter touching the sea receives more nutrients from marine ecosystems than a large island due to the differences in surface-to-area ratios. In a new study by John Maron, James Estes, Donald Croll, Eric Danner, Sarah Elmendorf, and Stacey Bucklelew, scientists have...

Researchers unravel DNA tangles and enzyme seamstresses

... to cut and reconnect at hooked-like but not other touching points. If this process were disrupted, however, the cell would be in serious trouble. "One link could keep the cell from dividing. Two links are even more lethal," says Zechiedrich, who notes that "the results of these computer simulations are very ...

Common practices at petting zoos put visitors at risk

...ssociated with illness were feeding a cow or goat, touching a goat and stepping in manure or having manure on your shoes. Not surprisingly, simple handwashing after visiting the petting zoo, including lathering with soap and washing hands before eating and after visiting the petting zoo, were found to protec...

Purdue creates new low-cost system to detect bacteria

...e able to look at colonies on a petri dish without touching the colonies, without staining or destroying the colonies." The research has recently received funding from the U.S. Department of Agriculture through Purdue's Center for Food Safety Engineering. Further work will include research to develop a gr...

UT Southwestern scientist receives NIH Director's Pioneer Award

...r antibody or T cell reactions selectively without touching anything else." Over the five years of the award, Dr. Kodadek and his colleagues will simultaneously test the usefulness of peptoids as a diagnostic tool in humans and as a therapy in mice. His work is an example of translational research, which...

Poultry consumption, handling are risk factors for antibiotic resistance in humans

... both the gene and resistance were associated with touching raw poultry meat and frequent poultry consumption. Laboratory tests showed the bacteria isolated from patients and vegetarians had no pre-existing resistance to Synercid. Resistance was rare among antibiotic-free poultry but a majority of bacterial i...

Unique imaging uncovers the invisible world where surfaces meet

...le ways, depending on which atoms in the water are touching the oxide surface. "Water and soil present a really different interface," she says. "I want to know what happens next. Do the water molecules break down or do they remain intact? "With these techniques, we're getting access to the dynamics of the ...

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