Tag: "external" at biology news

Automobiles Gain High Technology Noses To Sniff Out Breaches In Air Pollution Laws In Europe Wide Research Project

...nerated by vehicles and to restrict the amount of external air pollution (particularly CO entering drivers cabins in our increasingly polluted cities). The increasing levels of air pollution in our cities have led both politicians and drivers to take action. Drivers want to have more and more sophisticated...

Harvard, Duke Researchers Discover 'Off-switch' Inside Human Cells

... activatedby hormones, neurotransmitters and other external chemical signals. Neurotransmittersare substances that trigger brain cells to fire in the process of propagatingnerve impulses. "This is the first example of a class of molecules that can turn offa G protein," said Patrick Casey, associate professor...

Laser Microscope At Cornell Images Serotonin In Live Cells

... or changing the process and without requiring any external fluorescent marker," said Watt W. Webb , Cornell professor of applied and engineering physics, who led the work. "It is a new way of doing three-dimensional UV microscopy in functioning cells and the best way we know of for doing UV microscopy in t...

Scientists Determine 3-D Crystal Structure Of Cancer-Causing Protein

...ether on the surface of the cell in response to an external signal. Thisclustering is mediated by modular units that carry the phosphorylatedtyrosines, or phosphotyrosines. One of these modular units, Src homology (SH)domain 2, is a signaling molecule that enables interactions and containsdocking units. Norma...

Plants Need Vitamin C, Too

...l stresses, much like humans stand up well against external stresses when they consume vitamin C. Last believes this research shows that ascorbic acid acts as a key free-radical scavenger and participates in important enzyme reactions. "That's why ascorbic acid is thought to play a variety of critical roles ...

New understanding of crab populations may not bring fishermen's delight

...he May 30 issue of Science magazine fingers random external influencesthat are amplified by nonlinear internal...re too high. Then the researchers threw in random external forces, also called "noise,"which could be weather, water temperature, ocean circulation or other fa...

Merging Physics And Neuroscience: First Evidence Of Self-Organized Criticality In Brain Networks

... spontaneously move toward acritical state without external tuning. While the implications of the work remain unclear, theresearchers believe further study could lead to new insights intodisease processes, improved techniques for diagnosing diseases ofthe brain, and perhaps even new treatment options. Mod...

$3 Million From Defense Department Will Fund Next Phase Of UT Southwestern's Gulf War Syndrome Research

...research are reviewed by government scientists and external peer panels, UT Southwestern will seek additional funding to cover the cost of developing diagnostic tests and identifying and evaluating potential treatments. The UT Southwestern team has concluded that some veterans are suffering from brain and ner...

Cut Pesticide Use In Half, Urges SFU Biologist

...ecause we see an insect on it, or an apple with an external blemish, weare encouraging the use of more pesticides." Each of us has choices to make, he says. Does a single cockroach scuttlingacross your kitchen floor really demand that your house be bathed in insecticide?Do those dandelions on your lawn ...

Widespread Genus Of Monkeys Gives Up Genealogical Secrets To Columbia Researchers

...arwin's finches of the primate world." In external appearance, the macaque family has no common definingfeature, leading to considerable confusion when appearance has been used toclassify them. There has even been some debate on whether macaques are a singlegenus or two genera, and whether some spec...

At Life's Most Sensitive Stage, Embryos Cope With Stress

...ons likely tostrongly increase the success rate of external fertilization. Looking further, they found that the seaweed waits for chemical signals, a highlevel of salt and a low level of carbon dioxide dissolved in the seawater, asindicators that conditions are right for romance. Brawley gives credit to herfo...

Population Growth Costs Include Global Warming Impact

...dhaus cautioned. Surprisingly, most of the external costs in the shadow price come fromconventional co...t category, he explained. To estimate the external costs of a larger population, the Yalescientists used computerized, dynamic, general equilibrium mod...

When To Reproduce? It's All In The Timing

...y success of seaweeds and other organismswhich use external fertilization, this line of reasoning struck Brawl...ad willhave some statement that organisms that use external fertilization have torelease lots and lots of gametes because fertilization success is low. ...

$2 Million Dollar Grant Funds Salton Sea Web Site

...ource." Redlands underwent a yearlong internal and external review process before beingawarded the EPA funds, ensuring that the program would meet both theuniversity's liberal arts mission and the EPA's standards of research andreporting. The Salton Sea program will be operated through the university's Center...

Molecular Mechanochemistry: An Emerging Discipline At The Nexus Of Biology And Physics

...ular pathwaysthat govern them vary due to changing external forces. Getting at the heart of blood-flow dynamics is also critical tounderstanding the localization of atherosclerotic lesions. "Eddies form atarterial branches--much like when a river branches--and that's where arteriallesions develop,...

Insights Into The Proteasome - A Fascinating Macromolecular Machine For Protein Degradation

...g from mutations or damage ensuing from adverse external conditions. Moreover, it has important regulatory roles in numerous biological processes such as cell cycle, apoptosis or the immune response. A research team at the Max Planck Institute of Biochemistry in Martinsried/Germany, headed by ...

New Test Opens Window On Corrosive Free-Radical Activity In Individuals

...ay be largely unprotected without vitamins orother external aid. Existing studies based on these necessarily indirecttechniques have produced sometimes contradictory results, leading to debate andspeculation among experts and confusion among members of the public. "We presently have no rational basis...

CAK Activation Of Plant Cell Cycle: Scientists Find Another Piece In The Jigsaw Puzzle To Help Explain Why Plants Do Not Develop Cancer Spontaneously

...entry into the cell division cycle by external hormonal and stress stimuli is a central theme of cancer research. In contrast to animals, plants appear to have strong preventive mechanisms to avoid this kind of uncontrolled cell division. On the other hand, and unlike an...

HIV Discriminates Amongst Cells

...nd disassemble rapidly in response to internal and external signals. This allows the cell to migrate across blood vessel walls and squeeze throughsmall spaces," said David H. Schwartz, MD, PhD, associate professor, MolecularMicrobiology and Immunology, Johns Hopkins School of Public Health, whoco-authored the...

Protecting the Beat Of Life: Test Center Studies Interaction Between Pacemakers & Electronic Article Surveillance Systems

...cturers include filtersthat keep out most of these external signals. In addition, modernpacemakers also include a "noise" mode that temporarily shifts thedevices to a generic heartbeat pacing rate when they receive confusingsignals. This mode keeps a heart beating until the interference isremoved. Woody an...

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(Date:10/25/2014)... October 25, 2014 The ... which verifies IT-accessibility for disabled users by disabled ... logo to Mackin Educational Resources of Burnsville, ... management system and to the Minnesota Alliance for ... "Own Best Medicine" website. Both organizations ...
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(Date:10/25/2014)... 24, 2014 (HealthDay News) -- Not getting the right ... colitis, a new study suggests. Those who sleep ... hours per night may be more prone to developing ... researchers report. The study authors concluded that duration and ... among patients with inflammatory bowel diseases. "Both short ...
(Date:10/25/2014)... Oct. 23, 2014 (HealthDay News) -- Current osteoporosis ... younger postmenopausal women at risk for osteoporosis-related fractures, ... to prevent fractures, we need tools that help ... injuries so that we can target these at-risk ... Crandall, professor of medicine in the division of ...
Breaking Medicine News(10 mins):Health News:IT-Accessibility Award Granted to Education and Health Care for Section 508/WCAG 2Health News:IT-Accessibility Award Granted to Education and Health Care for Section 508/WCAG 3Health News:5 Signs Indicating That Insulation Needs Replacing as Told By Clean Crawls in Recent Article 2Health News:Upcoming Episode of Innovations with Ed Begley, Jr. to Feature Limbkeepers® 2Health News:Sleep Duration Linked to Ulcerative Colitis Risk in Study 2Health News:Osteoporosis Screening Guidelines May Miss Younger Women at Risk 2
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