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Tag: "dynamic" at biology news

Looks matter to female barn swallows

...d in the Cornell Laboratory of Ornithology. "It is dynamic and continual. This is something that most humans can relate to -- think of how much time and money we spend on our looks and status long after we have established stable relationships." Barn swallow ( Hirundo rustica erythrogaster ) males have a w...

Investigating 'brain shrinkage' in alcoholics

...problem solving, and judgment. This is part of the dynamic course of alcoholism that likely contributes to its maintenance. In the symposium, [we presented] data showing that alcoholics can surmount these impairments in decision making and evaluation of rewards and punishments to achieve multi-year sobriety....

Genomatix, AAAS ink agreement

... knowledge base and analysis system. It allows for dynamic data-driven network/pathway construction and analysis based on literature, the Genomatix Knowledge Base, and sequence analysis. It is an important component of the microarray data analysis pipeline offered by Genomatix and enables biologists to disco...

Sensor web simulation investigates technique to improve prediction of pollution across the globe

...ted areas. To test the value and benefit of using dynamic sensor web measurement techniques and adaptive observing strategies, NASA technologists have formulated experiments involving two NASA Earth observing satellites that fly in formation high above Earth. These consist of Aqua and the recently launched ...

Retina adapts to seek the unexpected, ignore the commonplace

...he discarding of signals that are less useful, and dynamic retinal adaptation provides a means of stripping from the visual stream predictable and therefore less newsworthy signals. For example, Meister says, in visual environments such as forests or fields of grass with many vertical elements but only rare...

Molecular mechanism of feather formation found

...ignals the down-regulation of Shh expression. This dynamic signaling interaction fits a longstanding mathematical model known as an activator-inhibitor mechanism, says lead author Matthew P. Harris, Fallon's graduate student now doing a postdoctoral fellowship with Nobel Laureate Christiane Nusslein-Volhard ...

Brain networks change according to cognitive task

...nnections between different parts of the brain are dynamic and not static. This and other findings answer lon...s in effective connectivity. To better understand dynamic effective connectivity, Mesulam compares the brain networks to a network of highways connecting diff...

Rutgers to lead $52.7 million protein research program

...he largest in Rutgers' history, will reinforce our dynamic position in the biomedical sciences, inspire our researchers toward new discoveries and open new doors to longer and healthier lives," said Richard L. McCormick, president of Rutgers, The State University of New Jersey. "Federal funding of this magn...

Grasshopper love songs give insight into sensory tuning

...stems adjust to efficiently represent the complex, dynamic sounds, sights, and other sensory input from the environment. Writing in the August 4, 2005, issue of Neuron, researchers led by Christian K. Machens of Cold Spring Harbor Laboratory and Andreas Herz of Humboldt-University Berlin describe experiment...

Studies on human genome variation provide insight into disease

...SPANX cluster and showed how the region exhibited dynamic deletions, duplications, and gene conversion events, some of which may have resulted in the development of mutations involved in prostate cancer susceptibility. "Because of the strong similarity among genes in this region, we had to develop a new t...

Housecat-sized Siberian tiger cubs get collared

...SPANX cluster and showed how the region exhibited dynamic deletions, duplications, and gene conversion events, some of which may have resulted in the development of mutations involved in prostate cancer susceptibility. "Because of the strong similarity among genes in this region, we had to develop a new t...

Biotechnology's newest chemical tool

...opriate RNA methyltransferases, enabling real-time dynamic studies of the complicated mechanism of protein translation. ...

Restaurant seafood prices since 1850s help plot marine harvests through history

...as changed and the role humans have played in this dynamic process. More than 75 presentations at the conference will add greatly to what is known about ocean life in the past, and delineate what is unknown but discoverable, and what may be unknowable about the world's oceans. Fish: Food for all Ages "Fis...

A new window into structural plasticity in the adult visual cortex

...ual branch tips, but the inhibitory neurons showed dynamic changes, with one branch tip undergoing dramatic r... conclude that the cortical neurons have different dynamic properties. The branch tips of interneurons in the adult neocortex can grow, retract, and sprout new...

Computer models aid understanding of antibody-dependent enhancement in spread of dengue fever

...d on epidemic theory, the researchers examined the dynamic role antibody-dependent enhancement plays in the spread of dengue viruses. They concluded that when antibody-dependent enhancement triggered small increases in transmission it gave viruses an edge over other co-circulating dengue viruses that did not...

First big influenza genome study reveals flu evolution

...latively small geographic region, Ghedin says, the dynamic influenza virus showed striking diversity, with variants frequently swapping genetic material. In fact, the researchers report, one such event explains why the 2003-04 flu vaccine offered less protection than usual. Every flu season, a global netw...

Zooming in on the protein-conducting channel

...f the few techniques capable of visualizing large, dynamic molecules. In preparing for cryo-EM, researchers ...Scripps Research Institute. The technique provides dynamic information on the multitude of vibrations and motions that complex molecules preferentially undergo...

Cancer support cells may evolve, fuel tumor growth, study shows

...sts a need to look at cancer development as a more dynamic process, it also indicates a need for expanding th...s needed. They said their findings underscore the dynamic complexity of cell-to-cell interactions and the changing selective microenvironment that drives canc...

Chlamydia parasite lives off our fat

...r role. Lipid droplets are now known to be motile, dynamic and enriched for proteins known to regulate lipid synthesis, membrane traffic and cell signaling. Now in new research presented Sunday at the 45th Annual Meeting of the American Society for Cell Biology in San Francisco, Yadunanda Kumar and Raphael V...

Technique offers new view of dynamic biological landscape

...tions promises to change how researchers study the dynamic biological landscape of the cell. The technology, which is called epistatic mini array profiles (E-MAP), has already been used to assign new functions to known genes, to uncover the roles of previously uncharacterized proteins, and to define how bioc...

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