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Tag: "power" at biology news

Scientists develop a way to make the deadliest toxin known even more toxic

...ct. In some cases, the study noted, the activation power of the new molecules was as much as fourteen-fold, the greatest increase in activation ever reported for a protease; before this study, a two-fold activation of a protease was referred to as a state of "superactivation." Proteases are enzymes that ac...

USC, Rice to develop bacteria-powered fuel cells

...s to create bacteria-powered fuel cells that could power spy drones that fit in the palm of a hand. The Ai...as been stymied by the lack of a suitable, compact power source. With $4.4 million from the Department of Defense's Multidisciplinary University Research Ini...

Tool developed to silence genes in specific tissues using RNAi

...earchers worldwide have been trying to harness the power of RNAi since it was discovered in 1998. RNAi rocked the world of science because of the vast implications this natural cellular control system potentially offered medicine. RNAi is used by cells in many life forms to identify viral RNA, which ofte...

A new focus for the mechanism of nerve growth

...ion as molecular motors; the most familiar myosins power contraction in heart and skeletal muscles. Myosin II motors are involved in functions such as directed cell movement, cell division and wound closure. While skeletal myosins have been studied in detail, non-muscle myosins are just beginning to be und...

Researchers develop portable 'vein finder' for faster, more accurate injections

...ow much you can pick up," he adds. "Cost, size and power issues restrict us to using a single sensor, which limits the type of signal processing we can do to eliminate the scattering effects." Once the system is successfully adapted for humans, data processing and electronics will be miniaturized in a pr...

Aggression-related gene weakens brain's impulse control circuits

... "These new findings illustrate the breathtaking power of 'imaging genomics' to study the brain's workings in a way that helps us to understand the circuitry underlying diversity in human temperament," said NIH Director Elias A. Zerhouni, M.D., who conducted MRI studies earlier in his career. "By itse...

International HIV/AIDS trial finds continuous antiretroviral therapy superior to episodic therapy

...ected. That is the significant value and potential power of conducting such a large trial." The SMART study was coordinated by four international centers: the Medical Research Council Clinical Trials Unit in London; the Copenhagen HIV Program in Denmark; the National Centre in HIV Epidemiology and Clinic...

Both alcoholism and chronic smoking can damage the brain's prefrontal cortex

...ZM will help develop a system to supply electrical power wirelessly to the electrode array. It also will combine the electrode array with signal processors and amplifiers so that the implanted device ?less than one-third inch on a side ?can relay signals back and forth wirelessly between the remnant limb, ...

University of Utah to help build bionic arm

...ZM will help develop a system to supply electrical power wirelessly to the electrode array. It also will combine the electrode array with signal processors and amplifiers so that the implanted device ?less than one-third inch on a side ?can relay signals back and forth wirelessly between the remnant limb, ...

Diverse tropical forests defy metabolic ecology models

... a rule that total tree abundances scale as the -2 power of diameter, and we were hopeful that it would apply. But we tested that prediction on data from 14 sites around the world --over 2 million trees--and it just did not hold up anywhere," continues Muller-Landau. The CTFS team subsequently tested othe...

New DNA 'fingerprinting' technique separates hemp from marijuana

...ividuals in paternity and criminal cases, lack the power to distinguish Cannabis cultivars unequivocally. ...arkers, compared to other techniques, gives us the power to separate the cultivars." The Cannabis plant has been cultivated for millennia and is important i...

Experimental TB drug effective against resistant and latent mycobacterium tuberculosis

...0013 in clinical isolates,. The short-term killing power of FAS20013 is greater than currently used drugs; for example, FAS20013 will kill more organisms in a 4-hour exposure than isoniazid or rifampin can during a 12- to 14-day exposure. Multiple drug-resistant tuberculosis (MDR-TB) has a fatality rate ...

Mobile phone use not linked to increased risk of glioma brain tumours

...esigned to use analogue signals and emitted higher power than current digital phones but the study showed no increased risk of glioma brain tumours with the use of analogue phones. Notes to Editors:There are over 4,000 new cases of brain tumours per year of which glioma is the most common type. Early sy...

Red Tide causes sea turtle die-off in El Salvador

...equent diagnosis in this outbreak demonstrates the power of collaboration among governments and non-governmental organizations," said White, who collected tissue samples in January. "We are still testing samples from other turtles that died during this period, but we can say with some certainty that Red Ti...

Infused spleen cells found not to impact islet recovery and reversal of type 1 diabetes in mice

...c approaches to common disease is that we lack the power to precisely localize DNA sequences that are associated with disease, often leaving us immense stretches of DNA to look at," says one of the study's corresponding authors, Andy McCallion, Ph.D., an assistant professor in the McKusick-Nathans Institut...

Junk DNA may not be so junky after all

...c approaches to common disease is that we lack the power to precisely localize DNA sequences that are associated with disease, often leaving us immense stretches of DNA to look at," says one of the study's corresponding authors, Andy McCallion, Ph.D., an assistant professor in the McKusick-Nathans Institut...

Typhoid fever led to the fall of Athens

...a to Greece in 430-426 B.C. changed the balance of power between Athens and Sparta, ending the Golden Age of Pericles and Athenian dominance in the ancient world. It is thought that up to one third of the Athenians, including their charismatic leader, Pericles, perished in the epidemic. Until now our und...

Great (taste) expectations: Study shows brain anticipates taste, shifts gears

...iety disorders, the new detailed insights into the power of anticipation could lead to better treatments for such conditions. "The placebo operates through expectancy. In this study, we've taken the pill out of the picture. We're just manipulating expectancies," he says. "The results beg the question of w...

'Virus chip' detects new virus in prostate tumors

...mation, perhaps as a response to infection." "The power of the virus chip resides in its ability to simultaneously screen for all viruses, without preconceptions or bias," said Joe DeRisi, PhD, a Howard Hughes Medical Institute (HHMI) investigator at UCSF who developed the chip with colleagues in his lab....

Whole-genome study at Johns Hopkins reveals a new gene associated with abnormal heart rhythm

Using a new genomic strategy that has the power to survey the entire human genome and identify genes with common variants that contribute to complex diseases, researchers at Johns Hopkins, together with scientists from Munich, Germany, and the Framingham Heart Study, U.S.A., have identified a gene...

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