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Conditions in Biological News

MU researchers create drought conditions to unearth solutions

COLUMBIA, Mo. Droughts have devastating effects on farmers. In most of the world, droughts are the leading cause of crop failure. Droughts increase consumer costs, kill livestock, reduce crop yields, and trigger wildfires and dust storms, which lead to malnutrition and famine, social unrest and p...

Arctic climate under greenhouse conditions in the Late Cretaceous

New evidence for ice-free summers with intermittent winter sea ice in the Arctic Ocean during the Late Cretaceous a period of greenhouse conditions - gives a glimpse of how the Arctic is likely to respond to future global warming. Records of past environmental change in the Arctic should help ...

Drug used to treat skin conditions is a marine pollutant

Clotrimazole is a common ingredient in over-the-counter skin creams. Recent results from the University of Gothenburg, Sweden, now show that it is associated with major environmental risks. "The pharmaceuticals and chemicals in everyday use form a mixture in the ocean that has a direct impact on...

New study changes conditions for Spanish brown bears

Brown bears from the Iberian Peninsula are not as genetically different from other brown bears in Europe as was previously thought. An international study being published this week in Proceedings of the National Academy of Sciences, PNAS, shows that, on the contrary, the Spanish bear was only rec...

Changes in ocean conditions in Sargasso Sea potential cause for decline in eel fishery

American eels are fast disappearing from restaurant menus as stocks have declined sharply across the North Atlantic. While the reasons for the eel decline remain as mysterious as its long migrations, a recent study by a NOAA scientist and colleagues in Japan and the United Kingdom says shifts in o...

Unfavorable ocean conditions likely cause of low 2007 salmon returns along West Coast

NOAA scientists are reviewing unusual environmental conditions in the Pacific Ocean as the likely culprit for the dramatically low returns of Chinook and coho salmon to rivers and streams along the West Coast of the United States in 2007. Researchers from NOAAs Northwest and Southwest Fisheries...

Family conditions may affect when girls experience puberty

Early puberty in girls has been found to negatively affect these teenagers health in areas such as mood disorders, substance abuse, adolescent pregnancy, and cancers of the reproductive system. Given these findings, it is critical to understand why certain adolescents are at increased risk for ea...

Scientists track chemical changes in cells as they endure extreme conditions

One of nature's most gripping feats of survival is now better understood. For the first time, scientists from the U.S. Department of Energy's Lawrence Berkeley National Laboratory observed the chemical changes in individual cells that enable them to survive conditions that should kill them. The...

3-substituted indolones as novel therapeutic compounds for neurodegenerative conditions

Neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis (ALS), disrupt the quality of life for patients, put a tremendous burden on family caregivers, and cost society billions of dollars annually. The most consistent risk factor for develop...

Old before their time? Aging in flies under natural vs. laboratory conditions

Evolutionary studies of aging typically utilize small, short-lived animals (insects, worms, mice) under benign conditions constant temperature and humidity, no parasites, superabundant food in the laboratory. Oddly enough, very little is known about aging in such animals in their harsh, stressfu...

Purple extremist thrives under inhospitable conditions

This release is available in German . Mild environmental conditions are a prerequisite for life. Strong acids or dissolved metallic salts in high concentrations are detrimental to both humans and to simpler life forms, such as bacteria. Such conditions destroy proteins, ensuring that...

How badger culling creates conditions for spread of bovine TB

A stable social structure may help control the spread of bovine tuberculosis (TB) among badgers, ecologists have found. The findings ?published online in the British Ecological Society's Journal of Animal Ecology ?have important implications for the role of badger culling as part of the strategy to...

Chronic jet-lag conditions hasten death in aged mice

Researchers have found that aged mice undergoing weekly light-cycle shifts--similar to those that humans experience with jet lag or rotating shift work--experienced significantly higher death rates than did old mice kept on a normal daylight schedule over the same eight-week period. The findings ma...

Food-crop yields in future greenhouse-gas conditions lower than expected

Open-air field trials involving five major food crops grown under carbon-dioxide levels projected for the future are harvesting dramatically less bounty than those raised in earlier greenhouse and other enclosed test conditions ?and scientists warn that global food supplies could be at risk without...

Advances in lung cancer research announced at conference

...out the trials are available at www.shc.org/content.asp?lnavid=39 . "TH-302 is a new, novel, small molecule that is activated when cells are under conditions that lack oxygen, which is a metabolic condition characteristic of cancer cells," Dr. Weiss said. "We are excited to continue investigations with TH-3...

Marine microbes creating green waves in industry

... could lead to more efficient and greener ways to manufacture new drugs for conditions such as epilepsy, diabetes, flu and other viruses, as well as improving the...ions that we want to use in manufacturing. We then treat the microbes under conditions where they produce the key enzymes in higher yield, which we finally purify...

AGU journal highlights -- Aug. 6, 2009

...rs Scientists generally believe that warm, wet conditions existed on Mars until only about 3.7 billion years...ut 3.4 billion years ago. The study indicates that conditions favorable for flowing water and lake formation may...s been thought to be a period during which surface conditions did not allow significant hydrological activity. T...

'Green' energy from algae

...rgy production from microalgae. In the medium term, pilot-scale and demonstration plants shall be built on the northern KIT campus, with the favorable conditions in terms of space and infrastructure being made use of. "This will represent a major node in the presently rather rapid networking of algae biotechnol...

Hormone levels contribute to stress resilience

...hiladelphia, PA, 5 August 2009 - It is important to understand what biological mechanisms contribute to an individual's capacity to be resilient under conditions of extreme stress, such as those regularly experienced by soldiers, police, and firefighters. Dr. Charles A. Morgan III and his colleagues from Yale ...

Joint research into an enzyme that causes genetic diseases

...ads, pyruvate carboxylase is potentially a target in obesity and diabetes treatments. The paper presents the enzyme's structure under physiological conditions for the first time, and reveals which of the previous models is the correct one. Mikel Valle, a researcher from CIC bioGUNE's Structural Biology Un...

New stem cell research could reduce number of animal experiments

...rs from the University of Bath are embarking on a project to use stem cell technology that could reduce the number of animal experiments used to study conditions such as motor neurone disease. Dr Vasanta Subramanian, from the University's Department of Biology & Biochemistry, will be developing a technique u...

Holding breath for several minutes elevates marker for brain damage

...vers acted as the controls. The researchers told the participants to lie on their backs on a cot and hold their breath for as long as possible. The conditions were dry, but mimicked a static apnea dive in which the divers float face down holding their breath. The divers used whatever preparatory techniques t...

ADA releases position paper on food and water safety

...foodborne disease annually, with a cost of $23 billion. High-risk populations (the very young; elderly; pregnant; and immunocompromised due to medical conditions such as diabetes, renal diseases and chemical and radiological treatments) experience the most serious consequences of foodborne illnesses," the autho...

Drug-proof zebrafish reveal secrets of addiction

..., Webb and her colleagues discovered a set of 139 genes that respond inappropriately to amphetamine in nad mutants, without being altered under normal conditions in either genotype. In addition to genes involved in pathways classically associated with reward, this gene set shows a striking enrichment in transcr...

UC San Diego engineer provides insights to decades-old DNA squabble

...at is computationally accessible yet detailed enough to provide insights into its structure and dynamics. By simulating this model under physiological conditions using fast computer algorithms, Arya has provided the first evidence that chromatin does not exist uniquely in solenoid or zigzag forms but rather exh...

Family planning a major environmental impact

...ore descendants in the future the effect on the environment can be many times the impact produced by a person during their lifetime. Under current conditions in the U.S., for instance, each child ultimately adds about 9,441 metric tons of carbon dioxide to the carbon legacy of an average parent about 5.7 t...

Opening a new window on daylight

...isfactory answer to saving on the lighting bills without pumping up the air-conditioning. The team has developed a formula for tropical sky climate conditions that allows them to assess different window configurations for daylighting. The formula takes into account glass type, solar and visible light transmi...

Douglas-fir, geoducks make strange bedfellows in studying climate change

...ow living organisms may have responded to changes in climate. Analyzed by themselves, the rings from a single tree or mollusk may sometimes reflect conditions that are either favorable or unfavorable for growth. When scientists look at numerous individuals of the same species, however, the consistency of the...

Reprogramming human cells without inserting genes

...in advance of September print publication) as a "fast track" paper from the journal Cloning and Stem Cells . "We show that by manipulating culture conditions alone, we can achieve changes in fibroblasts that would be beneficial in development of patient-specific cell therapy approaches," the authors wrote i...

Large trees declining in Yosemite

...lined in Yosemite National Park during the 20th century, and warmer climate conditions may play a role. The number of large-diameter trees in the park declined...to consideration," said USGS scientist emeritus Jan van Wagtendonk. "Warmer conditions increase the length of the summer dry season and decrease the snowpack that...

Fujitsu Expands Support for Ethernet Networks With New Additions to XG Switch Product Line

...inite is a trademark of Fujitsu Ltd. All other trademarks are the property of their respective owners. Statements herein are based on normal operating conditions and are not intended to create any implied warranty of merchantability or fitness for a particular purpose. Fujitsu Computer Products of America, Inc....

Earliest animals lived in a lake environment, research shows

... that, for the smectite to form, requires specific conditions in the water conditions commonly found in salty, alkaline lakes." The r...the early animals lived and what the environmental conditions were like for them important information for addr...

Common allergy drug reduces obesity and diabetes in mice

...m "immunology" anywhere. This is because metabolic conditions and immunologic conditions are, with a few exceptions, distant cousins. H...easing blood flow to the site. However, in certain conditions mast cells build up to levels far beyond what the ...

UTMB study identifies women at risk of gaining excessive weight with injectable birth control

... "DMPA-related weight gain is linked to increased abdominal fat, a known component of metabolic syndrome, which raises the risk of obesity-related conditions such as cardiovascular disease, stroke and diabetes," said corresponding author Dr. Abbey Berenson, professor in UTMB's department of obstetrics and g...

Grant supports LSUHSC research on how like cell receptor systems determine very different functions

...cell division activity of growth factor receptors as a novel phosphorylation target. Understanding this novel mechanism might be important in treating conditions that are dependent upon specific growth factor receptors, like some breast cancers in which the EGF receptor family drives growth and survival. "Ou...

Technology improves salmon passage at hydropower dams

...ed create the model. 10:45 a.m.-12:15 p.m., Wednesday July 29, Session 3H: Improving Fish Passage through Modeling. Modeling Juvenile Salmon Egress conditions in The Dalles Dam Tailrace Using Computational Fluid Dynamics. Authors: Marshall C. Richmond, PhD, Cindy L. Rakowski, William Perkins and John Serkows...

Newly discovered gene fusion may lead to improved prostate cancer diagnosis

...ng is the standard of care, yet it is not accurate enough to predict prostate cancer, because many men may have an elevated PSA level, but have benign conditions such as inflammation of the prostate." It is important to distinguish harmful cancer from non-lethal diseases, such as benign prostatic hyperplasia...

Spring cold snap helps with stream ecosystem research

...ortance of sunlight on the growth of algae, bacteria, snails and other organisms in forest streams. Compared to typical conditions, the post-freeze conditions set in motion a chain reaction. "Increased light levels caused a cascade of ecological effects in the stream, beginning with considerably higher gr...

Stop and smell the flowers -- the scent really can soothe stress

... emotional stress. Until now, however, linalool's exact effects on the body have been a deep mystery. The scientists exposed lab rats to stressful conditions while inhaling and not inhaling linalool. Linalool returned stress-elevated levels of neutrophils and lymphocytes key parts of the immune system to ...

The value of variation: Ecologists consider the causes and consequences

...ictions about a population," he said. In order to make effective management decisions, for example, conservation biologists need to know under what conditions a predator and its prey can co-exist together. "The problem is that a lot of the ecological models say that predator/pray populations are unstable, an...
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