Tag: "simulating" at biology news

Better computer modeling provides a new look at large biomolecules

...ms with traditional molecular dynamics methods for simulating large systems, is that they require considerable computational effort to simulate the surrounding atoms of the aqueous solvent," said McCammon. "The Poisson-Boltzmann equation circumvents this by treating the solvent as one featureless polarizable me...

Rutgers to start up National Program of Excellence in Biomedical Computing

...e together to regulate expression, and modeling or simulating the time evolution of transcription and the interaction of genes through kinetic models at a higher level of modeling," said Levy....

High-flying UC Berkeley students ride "vomit comet" in search of better way to cut bone loss in space

...arry Kuznetz. After presenting a class paper about simulating reduced gravity on Earth, they cast about for ways to further their interest until Kram suggested they propose an experiment for the NASA program. The two teamed up with Guo, now a senior majoring in integrative biology, and Hamerski, who graduated l...

MCG researchers study hormone that may prevent bone being lost in space

...,000, three-year grant to study the mice on earth, simulating periods of weightlessness in the animals that over-express GIP and measuring the impact of the loss of gravity on the bones. "We think that what will happen is that those mice who over-express GIP won't lose bone," Dr. Isales said. If they are right,...

Chemists describe "zipper teeth" of DNA molecules -- publish results in the journal Nature

...molecules attached, from one to 50 molecules, thus simulating a solvent environment. De Vries explained that theorists have been learning to do computations at a level that can't be compared to experiment. "We can now do this as a test for some of these theories," he said. He explained that this endeavor, th...

New research software to simulate biochemical processes

...many) have joined forces to develop a software for simulating biochemical networks. In the international bioinfo...moment, they are working on a software package for simulating and analyzing biochemical networks. The transatlantic project goes by the name of COPASI (COmplex P...

Global diagnosis completed of ocean regions most sensitive to an iron-rich diet

...or sources of wind-blown dust around the world and simulating atmospheric circulation patterns. The estimates of global dust deposition produced by this model are more accurate than previous ones, says Goddard scientist Paul Ginoux, because we use a new assessment of dust sources based on TOMS (Total Ozone Map...

Florida research shows that for rice, warmer earth brings uncertain future

...at were maintained at different temperature cycles simulating day and nighttime fluctuations. They found the plants steadily produced less rice as temperature diurnal cycles exceeded 73-91 degrees Fahrenheit for the tropical variety and 68-86 degrees for the temperate one. Those optimum cycles already fall a bi...

Simulating protein folding from physical laws

...rnell University have had their best successyet in simulating the folding of a protein solely from the physical ...e chain to be tested andother known proteins or by simulating a partial fold and then comparing theresults to known shapes. Unfortunately, there are not easy mat...

Protein Adultery Revealed!: Mechanism Of Protein Folding Captured In Computer Simulation

... The conceptual leap The notorious complexity of simulating the folding of even a single protein, andthe lack of computational resources to do so, had inhibited researchers fromattempting robust (reproducible) multiprotein simulations till now. Says King, "There are at least 50 research groups of biophysicis...

Computer Simulation Reveals Nano-Switch That Activates Cell-Binding Function Of Key Protein In The Body

...who pioneereda set of computational approaches for simulating molecular dynamics. With a 3-Dblueprint of a molecule, Schulten's simulations produce detailed pictures of amolecule's structural response to external forces. Vogel working with Schulten, his graduate student Hui Lu andpost-doctoral fellow Ba...

Experimental Antibiotic Promptly Kills Drug-Resistant Bacteria In Studies

...ration ofantibiotics in contact with the bacteria, simulating the half-life of a drug being absorbed, distributed and eliminated in the human body. "Changing the concentrations mimics the pharmacokinetic profile in patients,"Zinner said. "Comparing activities of new drugs against old drugs based onpharmacokinet...

Oxygen-Carrying Myoglobin Not Necessary For Survival

...globin. All the animals were exposed to conditions simulating differentaltitudes at which the body would normally experience some lack of oxygen.Neither group showed any differences in their behavior or their ability to handle the different conditions. The only alteration researchers found in the roden...

NASA Using Space Incubator To Understand Breast Cancer

...the experimental study of these phenomena has been simulating the conditions of space so that complete laboratory studies can be done by numerous investigators on Earth. The simulated growth of mammalian cells in tissue culture needed to duplicate the quiet conditions of orbital free-fall in a way that allowed ...

UF Researcher's Innovative Fence Helps Control Sand Flies

... he has built a fence that seeps carbondioxide. By simulating a human presence, the carbon dioxide tricks the sandflies into making a detour and lures them into traps along the fence line.The date with dinner becomes a date with death. The carbon dioxide fence at the school is the first field demonstration ofDa...

DFG To Set Up 32 New Postgraduate Research Groups - First "Virtual Research Group"

...rch'; Stuttgart'Conservation laws in modelling and simulating marine, atmospheric and technical systems'; University of Hamburg...

Natural Shelters on Leaves House Plant Bodyguards

...rchers at the University of California, Davis. By simulating these naturally occurring shelters, known as "leafdomatia," on cotton plants, the researchers reduced the populationsof cotton-eating spidermites and boosted cotton yield by 30 percent. These results, offeringthe first experimental evidence that pl...

NCAR Scientist Models Earth's Climate and Vegetation Patterns At Last Glacial Peak

...zer's study checks the NCAR model's reliability by simulating past climates and comparing its results to geologi...tes and vegetation that it can be a useful tool in simulating the future. The two NCAR models used in the study were GENESIS (Global Environmental and Ecological ...

Core Spins Faster Than Earth, Scientists Find

...results lastfall from a theoretical computer model simulating the dynamo thatcreates Earth's magnetic field. The model, created by Gary Glatzmaierof the Los Alamos National Laboratory and Paul Roberts of theUniversity of California at Los Angeles, suggested that the Earthand its inner core may rotate at differe...

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