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Neutral in Biological News

AGU journal highlights: Nov. 11, 2008

... from Mars A comet tail has two entities: a neutral tail with debris along the orbit, and a plasma ... + forms through sunlight-induced ionization of neutral oxygen, which is a product of sunlight-induced ... possibly indicating that Rhea is a source of neutral oxygen to the inner magnetosphere. Title: ...

Diversity of trees in Ecuador's Amazon rainforest defies simple explanation

... University of California, Los Angeles proposed a neutral theory of biodiversity based on more than 20 ... director of the Smithsonian in Panama. neutral theory rests on the assumption that all species ... through distinct strategies. "If the neutral theory is correct, we would expect these traits ...

Model successfully predicts large river system fish diversity

... William Fagan, reports success using a so-called neutral model to study fish diversity in the sprawling ... management and conservation strategies. The neutral model approach means that we do not need to have ... systems. Controversial Method Using the neutral model, in which all species are assumed to be ...

Why do so many species live in tropical forests and coral reefs?

... is based on a counterintuitive assumption of neutral theory: that one can largely ignore interactions ... of Padua in Italy. Among ecological theorists, neutral theory has sparked a six-year quarrel over the ... in 2006 that coral-reef diversity "refutes" the neutral theory. At the same time, the paper by Volkov et ...

Nobel Laureate underscores importance of investment in basic research

... slow down atomic motion with light, and the first to construct a trap for neutral atoms. Both of these pioneering accomplishments were made possible with ... initiated funding for Phillips' research on laser cooling and trapping of neutral atoms. ...

If you're aggressive, your dog will be too, says veterinary study at University of Pennsylvania

... Applied Animal Behavior Science , also showed that using non-aversive or neutral training methods such as additional exercise or rewards elicited very few ... treated aggressive behavior, whether there was a positive, negative or neutral effect on the dogs' behavior and whether aggressive responses resulted ...

Old and young brains rely on different systems to remember emotional content

... were imaged in a functional MRI (fMRI) machine. Some of the photos were neutral in nature and others had strong negative content such as attacking snakes, ... memory. The results were sorted according to the numbers of negative and neutral pictures that were remembered or missed by each group. The scientists ...

Extinction most likely for rare trees in the Amazon rainforest

... trees. Hubbell works with data from the network to develop and test his neutral theory of biodiversityan attempt to find a unified explanation of large, ... and evolutionary forces of change. In this offering, the authors use the neutral theory to predict the number of tree species and to test predictions of ...

A baby's smile is a natural high

... were smiling or happy. In others they were sad, and in some they had neutral expressions. They found that when the mothers saw their own infants' ... he said. There was less effect from pictures of their babies with sad or neutral expressions. "We were expecting a different reaction with sad faces," ...

Cause and affect: Emotions can be unconsciously and subliminally evoked, study shows

... that they were viewing images of growling dogs and dirty toilets or even neutral images, such as horses or chairs. The participants then underwent ... expressed disgust, fear, anger, generally negative, generally positive and neutral feelings. Next, participants rated the overall positivity or negativity of ...

Record Attendance at the 2007 National Ergonomics Conference and Exposition

... Co.; Trackbar by Euro Office Americas; and the Ntune Seating System(TM) by neutral Posture, Inc. neutral Posture has won multiple Attendees' Choice Awards since the program began ...

Ecological Society of America announces 2009 award recipients

... in recognition of an outstanding body of ecological work or sustained ecological contributions of extraordinary merit. Most widely known for his neutral theory of biodiversity and biogeography, Hubbell's wide-ranging research career has investigated tropical biodiversity, sexual selection and resource ...

Geography and history shape genetic differences in humans

... that affect the structure and regulation of proteins to the distribution of variants in parts of the genome that do not affect proteins. Since these neutral parts of the genome are less likely to be affected by natural selection, they reasoned that studying variants in these regions should reflect the ...

NAU discovery could help feed millions

... technology that when applied to rodents, caused infertility in rats, which feast on crops intended for human consumption. "This environmentally neutral approach, that has never been available before, will reduce the damage rice-field rats cause in countries that depend on rice as a main food supply," ...

Cleansing toxic waste -- with vinegar

... 'bio-available' it doesn't present any risk to the surrounding ecosystem." Chromate chemicals have previously been successfully treated in situ in neutral Ph conditions, but this study is unique in that it concentrates on extremely alkaline conditions, which are potentially much more difficult to treat. ...

Mental fatigue can affect physical endurance

... to inhibit a response. After undergoing this session, participants reported being tired and lacking energy. The control session consisted of watching neutral documentaries for 90 minutes and was not mentally fatiguing. After each of the 90-minute sessions mentally fatiguing or non-fatiguing the ...

Rice eyes risks of quantum dots

... take part in the development of safety guidelines." The dots, 1/50,000ths the width of a human hair, were found to be safe in applications with a neutral pH environment. However, the study suggested when such products are discarded, they can eventually release their toxins into the environment. "In ...

American Chemical Society's Weekly PressPac -- Jan. 28, 2009

... that serve as models of cell toxicity and indicators of environmental health to QDs under different conditions of acidity and alkalinity. At near neutral pH levels, bacteria exposed to QDs experienced decreased rates of growth, but did not die. However, at moderately acidic or alkaline conditions, many ...

Turning over a new leaf for future energy supplies

... what would need to be invested in infrastructure for non-sustainable fossil energy. The continuous use of biomass as an energy source is also carbon neutral which means that the energetic usage produces not more CO 2 as used for the growth of the respective biomass, thus slowing down and stopping the ...

Decline in Alaskan sea otters affects bald eagles' diet

... diet. "Across the range of this species, their diet can be quite varied, but here it appears as though the change in diet had either a neutral or positive effect," he says. The propensity of the eagles to adapt quickly to a changing environment may have allowed them to flourish, but Anthony ...

Genes may make some people more prone to anxiety

... upon emotional arousal, contract and cause a blink. Participants then viewed pictures that were emotionally pleasant (such as animals or babies), neutral (such as a power outlet or hairdryer), or aversive (such as weapons or injured victims at a crime scene) -- 12 pictures of each type for six seconds ...

Water refineries?

... said Arden L. Bement, Jr., director of the National Science Foundation (NSF). To produce oxygen, Nocera and Kanan added cobalt and phosphates to neutral water and then inserted a conductive-glass electrode. As soon as the researchers applied a current, a dark film began to form on the electrode from ...

NYU Langone Medical Center's tip sheet to the International Conference on Alzheimer's Disease 2008

... including mad cow's disease. By injecting a safe, reconfigured form of the protein into the body cavity of mice, in addition to orally delivering a neutral bacterial booster, animals could produce more antibodies against the prion protein in the mouth and blood system, preventing access of the infectious ...

Ecological Society of America announces 2008 award recipients

... one of the first rigorous tests of the theory that ecological processes vary widely based on existing environmental conditions. His paper discusses neutral and niche partitioning theory and sets a framework for predictive ecological studies. Odum Education Award: Stuart Fisher This year's Eugene ...

Buckminster Fuller takes on big coal

... a new green economy to arise. Or maybe it is. For his startling and bold proposal to clean-up this disaster, Comprehensive Design for a Carbon neutral World: The Challenge of Appalachia, John Todd, a research professor in the Rubenstein School of Environment and Natural Resources at the University ...

Quest for better treatment for effects of menopause

... Ruiz del Aguas thesis point to raloxifene, while increasing the antioxidant activity of an enzyme known as arilesterase, which is beneficial, has a neutral effect on the cardiovascular system, given that it does not modifiy other cardiovascular risk markers, nor the characteristics of LDL (bad ...

Some biofuels might do more harm than good to the environment, study finds

... use of invasive species Promote crop rotation on cultivated lands Encourage soil conservation Promote only biofuels that are at least net carbon neutral ...

When following the leader can lead into the jaws of death

... Our experiments examined whether groups of fish could be led by replica individuals of the same species. We explored following behaviour both in a neutral situation and in a potentially dangerous situation where the subject fish had to be persuaded to swim past a model of a predatory fish. That the test ...

Rainfall and river networks prove accurate predictors of fish biodiversity

... food in the area. The model tracks how many species will thrive in a given area but does not predict which species. It is what is known as a neutral model and thus treats each fish equally. The lead author of the paper is Rachata Muneepeerakul, a postdoctoral researcher at Princeton who ...

Power from formic acid

... Formic acid is nontoxic and easy to store. Because formic acid can be generated catalytically from CO2 and biomass-derived hydrogen, the cycle is CO2 neutral in principle. Will we be replacing gasoline with formic acid in the future" It is not inconceivable, but initial applications requiring smaller ...

A model photochemical compass for bird navigation

... is matched with the magnetic "south" pole of the other, causing it to be non-magnetic. As all of its electrons are paired, the CPF molecule has a neutral charge and exists in its lowest energy or ground state. Alternatively, when a CPF molecule is exposed to light, porphyrin absorbs the light energy ...

Inflammation triggers cell fusions that could protect neurons, Stanford research shows

... cells whose origin could be easily identified. The researchers could then pick out heterokaryons in the brain by looking for green neurons against a neutral background. The researchers, in collaboration with scientists at the University of British Columbia in Vancouver, used this technique in the ...

New formula for combating the greenhouse gas nitrous oxide

... contamination in the wastewater (ammonium and nitrate) in the presence of atmospheric oxygen (anaerobically). The only end product is environmentally neutral molecular nitrogen (N 2 ). Exploiting this process, called anammox, to clean nitrogenous wastewater could in future lead to an entirely ...

Faster koa tree growth without adverse ecosystem effects

... reduced the growth of these alien grasses when compared to unfertilized test plots. The studys findings also showed the treatments were either neutral or beneficial to forest bird habitat, an important consideration because many trees in koa forests bear fleshy fruits or provide habitat for insects ...

AGU Journal Highlights -- March 19, 2008

... 13. Aurora on Jupiter: Strange effects from Io Io, the innermost large moon of Jupiter, orbits within a plasma torus that forms when neutral atoms in Ios atmosphere are ionized and swept into Jupiters magnetosphere. This torus is tilted with respect to Jupiter's equator, so at times Io is ...

Skewered pumpkins

... valves. The scientists attached stem-shaped molecules onto the surface of the porous spheres and filled the pores with guest molecules. At neutral to acidic pH values, they stacked cucurbituril molecules onto these stems. Cucurbituril is a fat, ring-shaped molecule reminiscent of a pumpkin that ...

AGU journal highlights -- Feb. 26, 2008

... the surface by solar photons or other energetic processes, some of these atoms are accelerated to escape velocity by solar radiation pressure. The neutral components of this escaped gas form a comet-like tail that points away from the Sun. Baumgardner et al. study this tail by observing the bright ...

Moderate prenatal exposure to alcohol and stress in monkeys can cause touch sensitivity

... and treatment are important. Children who are sensitive to touch have unpleasant and sometimes painful reactions to otherwise pleasant or neutral forms of touching. The study, conducted by researchers at the University of Wisconsin-Madison, appears in the January/February 2008 issue of the ...

Diabetes makes it hard for blood vessels to relax

... of this study can be confirmed by patients in vivo. In fact, the findings of Romera et al may provide a possible explanation for the unexpected neutral or even adverse effects of oral L-arginine in some clinical studies, in particular patients with coronary artery disease and infarction. A short ...

Scientists outline novel approach to ecosystem management

... and managers of the realities of current and future ecosystem changes is essential to generate management strategies that have positive rather than neutral or negative outcomes. ...
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