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Tag: "simulations" at biology news

MSI releases 'moleculizer' - a new approach to simulation of intracellular biochemical networks

...ion channels makes things very difficult."Computer simulations can be powerful tools in contemporary molecularbio...rimentally.The predictive capabilities of computer simulations can also aidbiologists in viewing cellular activity over a period of time, bytaking advantage of the...

Supercomputer Dedicated To Bioengineering, Computational Biology Installed

...lable. This new cluster will enable completely new simulations of the heart and other biological systems." Traditional supercomputer centers have historically been the workhorses of computational biology, but McCulloch said the drive to build ever faster and more specialized supercomputers has required computat...

Africa to take it on chin again with climate change

... primary sponsor. The analysis, which draws on 60 simulations of global climate from five computer models, provides new evidence linking drought in southern Africa to the warming of the Indian Ocean. However, it contradicts earlier studies that also connected the Sahelian drought of northern Africa to the India...

Supercomputers to focus brains on AIDS dilemma

...Structural biology and molecular dynamics computer simulations played an important role in these discoveries. Ho...es flow out of a long series of molecular dynamics simulations by McCammon's group. These simulations have focused on the catalytic domain of HIV-1 integrase, and ...

Rabies spread speeds up

...ne corridors and sites of dispersal - the authors' simulations provide a valuable resource for anticipating alternate outbreak scenarios and preparing multiple game plans to prevent or contain them. They also indicate the best sites for establishing a new vaccine barrier. And given how fast raccoon rabies could ...

Mapping neuron connections in the brain

...n connection maps could be used to create computer simulations of neural circuits involving tens of thousands of neurons with biologically realistic connections--and provide a practical way to begin untangling the mysteries of the brain. ### Citation: Amirikian B (2005) A phenomenological theory of spatially s...

Mechanism regulating tooth shape formulation found

...nown how cusps form at the right places. Computer simulations on tooth development have suggested that there should be a gene inhibiting induction of cusps. The research team has now identified this inhibitor to be a recently identified gene called ectodin. It turned out that ectodin is the first gene that is e...

Traditional models underestimate extinction rates

... and predict extinction rates. However, one set of simulations included a parameter for density-dependent random interactions and another did not. The idea is that if organisms interact with each other in their environments--which of course they do--then these interactions will likely affect an individual's prob...

Ships bring alien jellyfish invaders to our shores

... to new research. Using genetic data and computer simulations of ocean currents and water temperatures, researchers from the University of New South Wales and the University of California, Davis, have revealed that the moon jellyfish could not have migrated naturally, according to a report in today's Proceeding...

Computers close in on protein structure prediction

...ate models," he said. Baker compares the computer simulations of the proteins to the problem of trying to find t...overed by water. Each of the thousands of computer simulations is like one explorer. Although the 33 percent success rate reported in the Science paper might be g...

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

...rapidly changing environmental conditions. "These simulations fall into the category of 'proof of concept,' to assess the feasibility of what is also planned for the next generation observing systems to enable real, full-fledged sensor web measurements," explained Talabac. "We hope to demonstrate that such an a...

Scientists create digital bacteria to forge advances in biomedical research

...drug development and combating bioterrorism. Other simulations of biological systems are limited to the molecular...luzel's lab, Emonet worked with Rosner in devising simulations to understand how the sun reverses its magnetic field every 11 years. Each digital cell in AgentCel...

Molecular mechanism of feather formation found

...University, the model was placed in the context of simulations of growing feathers. The results suggested that a simple interaction between Shh and Bmp2 is sufficient to model the creation and patterning of barbs in feather development. The team then tested whether such interactions truly exist in the developin...

Tropical Deforestation affects rainfall in the U.S. and around the globe

... caution that their results are based on numerical simulations performed with a single general circulation model and that reproducing the experiment with other computer models using different atmospheric variables would be beneficial. Current research is attempting to answer why deforestation has such a major in...

Storing carbon to combat global warming may cause other environmental problems, study suggests

...os, such as changes in land use," Roy said. Those simulations showed no evidence that such significant land conversions could help generate more rainfall except perhaps in northern Florida and southern Georgia. In general, "unlike in the tropics, the temperate regions modeled here did not have sufficient energy...

Cattle grazing may help rather than hurt endangered species

...flooding by an average of 50 days per year. Their simulations show that climate change could compound these impacts, potentially, leaving endangered fairy shrimp and tiger salamanders without enough time to mature before their temporary aquatic environments disappear. "Consequently, land managers can play an i...

Membrane research opens window to benefits for plants, humans

... Urbana-Champaign used advanced molecular dynamics simulations to study the mechanics of how such proteins respon...that controls protein activity. Surprisingly, the simulations clearly showed that specific residues that sit far away from a water pore control the opening of the...

Grid bridges 4,800 miles for molecular repositories

...e small, but the data sets resulting from computer simulations of their behavior at atom-level resolution are huge, ranging in size from gigabytes to terabytes. The extreme file sizes mean simulation data generally resides in the home laboratory where the research was conducted and, for practical purposes, remai...

How E. coli bacterium generates simplicity from complexity

... is very important to E. coli," said Barrett. "Our simulations show that these two factors are key determinants o...human, we will most likely be able to use computer simulations to uncover the different possible cell types in a manner similar to what was done in our work with E...

Sensors, a smart dose of medicine for cancer treatment

... simulations, so it is important to validate these simulations by verifying exactly how much radiation is reaching the patient and where it is landing," says Aleksandar Jaksic, INVORAD project coordinator at Ireland's Tyndall National Institute. INVORAD developed two sensors, a silicon diode and a p-channel met...

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