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Tag: "simulates" at biology news

NASA links nanobacteria to kidney stones and other diseases

... NASA to examine NB, in a bioreactor chamber which simulates conditions of space travel. In this microgravity environment, NB was found to multiply five times faster compared to normal gravity on Earth, supporting earlier discoveries that microbes have radically different behavior in weightless environments. N...

Assessing the Amazon River's sensitivity to deforestation

...urse of several years and just recently completed, simulates the inter-connected river and floodplain system for the entire 6.5 million km2 basin. According to Coe, "The problem has always been that there simply aren't enough observations over a long enough time period for us to understand the River system. So...

Fighting malaria by manipulating mosquitoes' sense of smell

...ratory-reared mosquitoes in a large biosphere that simulates the natural environment. Finally, odorants that have passed all these tests will be field tested in cooperating villages near Ifakara and in The Gambia under the supervision of IHDRC and MRC Laboratories' researchers. "By combining laboratory-based ...

Liquid ventilation

...oped a liquid respiration respirator. The machine simulates placentary respiration by filling the lungs of the premature baby with liquid and then the respirator introduces and extracts the required quantity of liquid at a suitable respiratory rhythm. The amount of liquid administered is usually in the order ...

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

...e in initial tests on phantom tissue, a model that simulates human tissue and blood vessels. Researchers have now begun adapting the device for human use. Developing the user-friendly vein finder has been a deceptively complex task. "One reason it's so challenging is that we're using very simple components...

U of M study examines kidney stone prevention in astronauts

...with hydration therapy, exercise in a machine that simulates gravity could reduce the astronaut's risk of developing kidney stones, a condition that could be particularly painful and lead to an aborted mission," Monga said. ...

Many cleaners, air fresheners may pose health risks when used indoors

... when outdoor ozone levels are high. This scenario simulates an apartment in Southern California on a day when the mid-afternoon outdoor ozone concentration is high. A person who stays in the kitchen for two hours after using a moderate amount of one of the terpene-containing products would breathe in about on...

Study defines effective microbicide design for HIV/AIDS prevention

...he researchers developed a mathematical model that simulates the biological interaction between HIV contained in semen and the protective coating that accumulates on the lining of a woman's vagina after she applies a topical microbicide. The model describes the diffusion of the virus and active ingredients int...

Advance helps explain stem cell behavior

...e to create a "transcriptional network model" that simulates all of the complex and interactive steps in this patterning process, Gross said. Much of this process happens during a surprisingly short time and at very early stages of embryonic development. In mice, for instance, virtually all of the types of c...

Math model predicts cancer behavior

...for simulations become limiting. The current model simulates about four months of tumor growth in about eight hours, he said. "The beauty of our model is that it really represents the cancer cells very well," Quaranta said. "Sandy (Anderson) was able to capture the random behavior of cells." In the model, ...

MIT's ocean model precisely mimics microbes' life cycles

...rinciple of the new model is natural selection. It simulates the physical and chemical characteristics of the oceans, but adds to the virtual soup about 100 random types of phytoplankton. The model randomly generates the single-celled plants, which differ primarily in their size, and in their sensitivity to li...

Tropical forests -- Earth's air conditioner

...ce by a bright white covering of snow. The work simulates the effects of large-scale deforestation, and accounts for the positive and negative climate effects of tree cover at different latitudes. The result, which appears in this week’s early online edition of the Proceedings of the National Academy of Sci...

MIT's ocean model captures diversity of underwater forests

...rinciple of the new model is natural selection. It simulates the physical and chemical characteristics of the oceans, but adds to the virtual soup about 100 random types of phytoplankton. The model randomly generates the single-celled plants, which differ primarily in their size, and in their sensitivity to li...

'Virtual Patient' to simulate real-time organ motions for radiation therapy

... VIP-Man, which is an advanced computer model that simulates in 3-D how radiation affects the organs and tissues in the human body. "Live patients are not static beings, and a moving organ such as the lung or heart is a main concern in radiation treatment or imaging of tumors that are affected by such organ...

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