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Tag: "simulate" at biology news

Simulations unravel outer membrane transport mechanism

...rmatics. The programs, NAMD and VMD, respectively, simulate and visualize complex molecular interactions. By entering detailed data about the position and characteristics of every atom in the system, the researchers ran simulations of various scenarios to test which hypotheses were most feasible. Their work r...

Scientists close in on missing carbon sink

...ound-level measurements, they failed to accurately simulate the movement of carbon dioxide vertically in the atmosphere. The models tended to move too much carbon dioxide toward ground level in the summer, when growing trees and other plants take in the gas, and not enough carbon dioxide up in the winter. As ...

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

... developing a physics-based virtual model that can simulate a patient's breathing in real time. When used in c...ng advanced computational tools, it is possible to simulate lung movement; however, not in real time," De said. "For effective radiation therapy, physics-based ...

Role of noise in neurons

...omputational Biology, which took several months to simulate a few milliseconds of real time in the brain. They show how conduction along such thin axons is affected by the probabilistic nature of voltage-gated ion channels (channel noise). Channel noise destroys information in the AP, and they conclude that t...

Latent memory of cells comes to life

...state of the nucleosomes, the research group could simulate the experimental results and in this way gained insight into the mechanisms by which living cells with identical DNA can achieve extreme differentiation. The research at the ‘Models of Life?Basic Research Center at the Niels Bohr Institute has sho...

Proteasome activator enhances survival of Huntington's disease neuronal model cells

...ed cell survival after exposure to toxins known to simulate pathological mechanisms in HD. The manuscript shows that cellular changes due to expression of huntingtin protein with longer CAG repeats can reduce the ubiquitin proteasome system (UPS) function in Huntington¡¦s disease cells. Following compromis...

In young mice, gregariousness seems to reside in the genes

... Performing under the dim glow of red lights to simulate the nocturnal environment when mice are most active, the sociability of test mice was assessed when they were reunited with their former cage mates. At the same time, the researchers tuned in to the ultrasonic chattering that mice use to communicate ...

Male owls pitch their hoots to advertise body weight to competitors

...spond more strongly to the high-pitched calls that simulate lighter individuals, confirming that territorial males attend to pitch information advertising body weight in the calls of their competitors. The authors also found that the territory owners give slightly lower pitched hoots in response to calls mimi...

NASA predicts nongreen plants on other planets

...he VPL team is using a suite of computer models to simulate Earth-size planets and their light spectra as space telescopes would see them. The scientists' goal is to discover the likely range of habitable planets around other stars and to find out how these planets might appear to future planet-finding missio...

Ethanol vehicles pose a significant risk to human health, study finds

...y, Jacobson used a sophisticated computer model to simulate air quality in the year 2020, when ethanol-fueled vehicles are expected to be widely available in the United States. ''The chemicals that come out of a tailpipe are affected by a variety of factors, including chemical reactions, temperatures, sunl...

Mosquito genes explain response to climate change

...vironmental rooms that allow the UO researchers to simulate climatic conditions occurring in nature anywhere in the world, from the tropics to the polar regions. The newly created map contains 900 million DNA base pairs. There are three billion base pairs in humans. As various genome maps are being complet...

Drug treatment improves learning in mice with Down syndrome symptoms, Stanford/Packard study shows

...ify novel objects and navigate a maze ­ tasks that simulate difficulties faced by children and adults with Down syndrome ­ after being fed 17 daily doses of milk containing a compound called pentylenetetrazole, or PTZ. Treated mice performed as well as their wild-type counterparts for up to two months after d...

Virginia Tech's System X supercomputer provides super tool for simulation of cell division

...ate models and algorithms that make it possible to simulate the cell cycle -- the processes leading to cell division. They have demonstrated that the new mathematical models and numerical algorithms provide powerful tools for studying the complex processes going on inside living cells. Biologist John Tyson, ...

NASA satellite data helps assess the health of Florida's coral reef

...ese healthy regions, officials can then attempt to simulate those conditions elsewhere. Climate conditions, especially sea surface temperatures, are considered a major factor in coral reef health. Bleaching events typically peak when waters reach their warmest levels, usually in late summer and early fall. ...

Global changes alter the timing of plant growth, scientists say

...iological Preserve. The experiment was designed to simulate environmental conditions within the range that cli...e increased the concentration of carbon dioxide to simulate future conditions, the two groups flowered at the same time," Cleland said. Early spring In rece...

'Trojan Horse' agent halts bone metastasis in mice

...e leg bone marrow of experimental mice in order to simulate a bone metastasis. A week later, they treated the animals with five staggered doses of VEGF121/rGel delivered through intravenous injections. Half of the treated mice did not develop any bone tumors, Rosenblum says. "There was no evidence of canc...

Advance helps explain stem cell behavior

...perts say, could ultimately lead to the ability to simulate and possibly control the early developmental process, manipulating stem cells in a way that would help address disease problems, injuries, failing organs or other medical issues. "If you have an electrical problem in a car, you can repair it a lot ...

Study: Living coral reefs provide better protection from tsunami waves

...thematical formula that a computer could employ to simulate it. Different complex parameters had to be considered one by one: the width and depth of the reef; the roughness of its surface; the size of the lagoon behind it; and the slope of the coast beyond. And the overarching element was the wave itself and ...

New biochip helps study living cells, may speed drug development

...high-flying research plane used by NASA to briefly simulate zero gravity. The experiment analyzed gravity's effect on plant development, trying to solve the riddle of how a plant determines which way is "up." "We conducted research with the chip while we were flying in parabolas over the Gulf of Mexico, go...

Light-sensitive photoswitches could restore sight to those with macular degeneration

... nerve cells," Kramer said. "This will allow us to simulate the natural activity of the healthy retina, which has on cells and off cells that respond to light in opposite ways." Isacoff, Kramer, Trauner and their colleagues are experimenting with other molecules that can force shape changes, looking for imp...

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(Date:7/11/2014)... cannabinoid receptor type 1 can inhibit voltage-gated ... reduce neurotransmitter release. However, some scholars demonstrated ... extracellular Ca2+ influx and increase neurotransmitter release. ... Hospital Affiliated to Tongji Medical College, Huazhong ... whole cell voltage-clamp and calcium imaging in ...
(Date:7/10/2014)... 27, 2014  The American Academy of Forensic ... Standards and Technology (NIST) and the Department of ... and forensic science expert members to the Forensic ... element of the NIST,s Organization of Scientific Area ... first appointments made to the new FSSB that ...
Breaking Biology News(10 mins):Virtual finger enables scientists to navigate and analyze complex 3D images 2Ten Members of the American Academy of Forensic Sciences Appointed to Forensic Science Standards Board (FSSB) 2Ten Members of the American Academy of Forensic Sciences Appointed to Forensic Science Standards Board (FSSB) 3
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Breaking Medicine News(10 mins):Health News:Heterogeneous Mobile Processing & Computing Market Worth $61.70 Billion by 2020 – New Report by MarketsandMarkets 2Health News:Heterogeneous Mobile Processing & Computing Market Worth $61.70 Billion by 2020 – New Report by MarketsandMarkets 3Health News:Heterogeneous Mobile Processing & Computing Market Worth $61.70 Billion by 2020 – New Report by MarketsandMarkets 4Health News:Genetic Factors May Be Responsible for Slowing Concussion Recovery in Athletes 2Health News:Fadhits.com Announces a Special Offer on Elegant Quinceanera Dresses 2Health News:Lipitor Lawsuits Move Forward With Scheduling Of First Bellwether Trial 2Health News:Lipitor Lawsuits Move Forward With Scheduling Of First Bellwether Trial 3Health News:Lipitor Lawsuits Move Forward With Scheduling Of First Bellwether Trial 4Health News:Retired Ann Arbor Physician and Professor Wields New Media to Teach Health Science 2Health News:Retired Ann Arbor Physician and Professor Wields New Media to Teach Health Science 3Health News:Retired Ann Arbor Physician and Professor Wields New Media to Teach Health Science 4
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