Tag: "observes" at biology news

Open microfluidic and nanofluidic systems

... to fill these channels with a certain liquid, one observes that the liquid often refuses to enter the channels. In fact, as shown in the new PNAS study, liquids at surface channels can attain a large variety of different wetting morphologies including localized droplets, extended filaments, and thin wedges a...

A New Species of Monkey is Discovered in Tanzania: The First in Africa for More Than 20 Years

... is very small and limited in distribution. Ehardt observes that, “With the addition of another threatened species of primate to those species previously documented, the Udzungwa Mountains are arguably the most important site in Africa for primate conservation. The Udzungwas remain a focus for conservation e...

Map of life on Earth could be used on Mars

...ing early habitat divergences onto the tree, Blank observes that the ancestors of each of the three kinds of prokaryotes inhabited one of Earth's three types of hydrothermal systems, which include sulfurous steam vents like those which smatter the Yellowstone caldera, hydrothermal deep-sea vents, and boiling ...

Researchers discover mechanism for multiplying adult stem cells

...allow you to expand adult stem cells for therapy," observes Hochedlinger. "For instance, you could remove a person's skin tissue, put it in a dish, isolate the skin stem cells, then subject it to an environment that activates Oct4. This would cause the cells to multiply yet remain in their stem cell state. An...

Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality

... 320 x 40 km for its predecessor. SCIAMACHY also observes the atmosphere in two different ways - downwards or nadir-sounding' as well as 'limb-sounding' along the direction of flight - and with a larger spectral range than its predecessor. The increase in nitrogen dioxide levels seen is an unfortunate s...

UCLA imaging study of children with autism finds broken mirror neuron system

...erforms a goal-directed action and while he or she observes the same action performed by others. Neuroscientists believe this observation-execution matching system provides a neural mechanism by which others' actions, intentions and emotions can be understood automatically. Symptoms of autism include difficu...

Genetic key to growth of new arteries is identified

...sponse to an arterial blockage and others do not," observes Sarkar, who is also an assistant professor of surgery at the University of California, San Francisco. "So it's very important to understand the normal process that allows an animal or a person to grow new arteries when their legs don't get good blood...

Ultra low-dose estrogen shown safe for post-menopausal women

...ng. It shows that women can take estrogen safely," observes lead author Kristine Yaffe, MD, chief of geriatric psychiatry at SFVAMC and associate professor of psychiatry, neurology, and epidemiology at the University of California, San Francisco. In 2004, study results from the Women's Health Initiative (W...

Mirrors in the mind: New studies elucidate how the brain reflects onto itself the actions of others

...e, a monkey picks up a banana, and when the monkey observes a human picking up a banana in a similar way. Mirror-neuron activity appears to be highly specific, such that a somewhat different set of mirror neurons would fire if a banana were poked, for example, rather than picked up. There is also evidence tha...

Distinguishing friend from foe in the battle against cancer

...res higher and higher doses of chemotherapeutics," observes Verma, who is also an American Cancer Society professor in Salk's Laboratory of Genetics. "Rapamycin-mediated killing of cancer cells could be increased by inhibiting the function of NF-kB proteins. Our studies provide the basis for arriving at this ...

Cholera pathogen reveals how bacteria generate energy to live

...lectron Paramagnetic Resonance Spectroscopy, which observes electron spin, she and her co-worker Mark Nilges at the University of Illinois analyzed the properties of the flavin molecules, and mapped these functional properties to specific points in the protein structure. NQR is only one of several sodium p...

Glucose triggers brain cell death in rats after hypoglycemic coma

... put in." In terms of clinical science, Swanson observes that "as clinicians, our first reaction when we see a patient in hypoglycemic coma is to give lots of glucose, fast. But our rodent model makes it clear that overshooting glucose levels is very bad for rat brains. The way we treat patients for hypogl...

Better health twice as likely for nonsmokers who live and work with smoking restrictions

... among nonsmoking adults as it is among children," observes Donna Shelley, MD, Mailman School assistant professor of clinical Sociomedical Sciences, director of the Tobacco Cessation Program, and co- investigator of the research with principal investigator Marianne Fahs, PhD, Hunter College. Smoking restr...

1