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Tag: "simulate" at biology news

The brain, traffic and nano-circuits -- e-Science takes on major challenges

...s to enable circuit designers to share models that simulate nano-component behaviour and explore the implications for circuit design. It will help UK circuit designers to remain internationally competitive and overcome the disadvantages caused by the lack of an indigenous UK semiconductor industry. ...

Virtual realities against pain

...film or playing a simple computer game. The ADTs simulate real-life situations, and the possibilities are infinite. For example, until now users could choose between taking a flight, driving, downhill skiing, exploring buildings and many more activities. In this study, peer-reviewed publications on ADTs ...

Computational model simulates AZT metabolism in mitochondria

...iled computational model that allows scientists to simulate the biochemical reactions that take place when AZT is metabolized in cells, including their mitochondria, under different metabolic conditions. Drugs like AZT may interfere with DNA replication in the mitochondria, the energy factories of our cells, ...

Microscopic passengers to hitch ride on space shuttle

...ome more virulent when grown under conditions that simulate spaceflight, thus increasing the risk of astronauts becoming sick during flight. Whatever the mission or its duration, microbes are present where there are human beings. This experiment will focus on investigating the effects of spaceflight on thr...

U of M study examines kidney stone prevention in astronauts

...hat positioned their head lower than their feet to simulate low gravity for 30 days. One twin per pair was randomly selected to exercise (while still reclining) in a chamber that put negative pressure, or resistance on their lower body, and the other twin served as a non-exercising control. The pressure in ...

African amphibians make extreme parental sacrifice: The skin off their backs

...mals into small, plastic boxes filled with soil to simulate natural nesting conditions. Then they observed and videotaped interactions between young and their mothers. "We observed eight episodes of skin feeding by different young from five different broods," Nussbaum said. "In each episode, the young moved...

The Amazon in 2050: Implementing the law could save a million square kilometers of rainforest

...e last 12 years, developing computer programs that simulate land-use change. He is a professor at the Universidade Federal de Minas Gerais, where his teaching interests include ecosystem dynamics and modeling and digital cartography, and director of the Universidade's Center for Remote Sensing. He is also a V...

High-tech tags on marine animals yield valuable data for biologists and oceanographers

...orating the data into a computer model designed to simulate and predict ocean circulation patterns in the California coastal region. Preliminary results indicate that plugging in the sea lion data substantially increases the predictive capabilities of the model, Costa said. "It's like predicting the weather...

Genetic study shows humans have pushed orangutans to the brink of extinction

...d microsatellites. "We used the DNA information to simulate population history and detect evidence of a population decline," Goossens explains. "The genetic study shows that there is a high risk of extinction of the orangutan in Sabah in the near future if this decline goes on unabated," says Marc Ancrenaz,...

Setting the standard for computer models of life

...rts lists' help them to build computer models that simulate living processes. By combining models of simple processes they hope to understand and faithfully represent how entire biological systems - be they cells, organs, organisms or ecological niches - work. As well as contributing to the understanding of b...

How E. coli bacterium generates simplicity from complexity

...go. "The goal of this study was to comprehensively simulate all the possible molecular interactions in a well studied strain of E. coli to gain a global view of the range of functional network states," said Barrett. "Complex cellular networks can potentially generate lots of different behaviors, but we find t...

Missing fossil link 'Dallasaurus' found

... visualization laboratory, Polcyn has been able to simulate what Dallasaurus looked like, and how, based on his skeletal remains, he would swim and move from land to sea. An artist has taken Polcyn's visualization work even one step further by creating a life-sized model of Dallasaurus, a work that is soon to...

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

...sed computer climate models of their own design to simulate how added forest moisture might affect climates in those regions. "While a weather forecaster makes predictions about the weather for the next day or week, we instead forecast climate given other kinds of scenarios, such as changes in land use," Roy...

Preventing a pandemic: Study suggests strategies for containing a flu outbreak

...roduction of a vaccine. Using a computer model to simulate an outbreak in a rural Southeast Asian population, the scientists have shown how a combination of strategies, including targeted administration of antivirals, quarantine and prevaccination -- even with a poorly effective vaccine -- could potentially ...

Costly breeding programs for endangered species pay off

...s of these strategies. In particular, we wanted to simulate several generations of captive breeding followed b... every few weeks. This model system allowed her to simulate several years of breeding for endangered species that breed only once or twice per year. In order t...

Tissue regeneration operates differently than expected

...egenerating tissue these cells rather seem to only simulate such a transdifferentiation mechanism. This has major implications for the prospects of stem cell therapies targeting on the regeneration of skeletal or heart musculature. ...

Scientists get first glimpse at how plants, most animals repair UV-damaged DNA

...it the mixture with a kind of blue strobe light to simulate the energy that it would receive from visible light. Because the light pulses lasted less than a trillionth of a second, the researchers were able to make a very fast series of measurements to follow how the chemical reaction evolved over time. The...

Immune system has evolved to prevent autoimmune disease

...ew model of the immune system that is the first to simulate the hierarchical nature of the body's immune response. The model predicts that chronic infections may lead to autoimmune diseases, a scenario that has been proposed as a cause of some rheumatic diseases like arthritis. "There are as many as a 100 mi...

Scientists create digital bacteria to forge advances in biomedical research

...acterial populations. AgentCell can simultaneously simulate activity on all three scales, something its creato... no other software can do. "With AgentCell we can simulate the behavior of entire populations of cells as they sense their environment, respond to stimuli and ...

Traditional models underestimate extinction rates

...ated parameters, Drake wrote a computer program to simulate all the possible population outcomes 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 env...

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