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Tag: "temperature" at biology news

New findings blow a decade of assumptions out of the water

... window, the furnace will turn on and even out the temperature much faster. In his research Deutsch used a novel analysis of surface nutrients in the world's oceans that relied on several decades of existing large-scale data on nitrogen-to-phosphorous ratios, phosphorous also playing a major role in primary p...

Scripps research team discovers a chemical pathway that causes mice to overeat and gain weight

...uring the day." During continuous monitoring of temperature and motor activity, the researchers realized that the mice without the EP3 receptors were more active during the light hours-the nocturnal mice's "night"-and, more importantly, were eating during this time. The increased activity led to higher body t...

Researchers from the UGR use a bacterium to obtain biopreservatives from food

... end." AS-48 is very stable with respect to pH and temperature and has a broad action spectrum against numerous bacteria, including pathogenic bacteria transmitted by food, "which makes it a suitable molecule to use as a biopreservative." The research carried out at the UGR will complete the information conce...

Erectile dysfunction in diabetes is due to selective defect in the brain

... were exposed to a light/dark cycle, with standard temperature and humidity levels. The animals were randomly selected to receive chemical injection of the streptozotocin (STZ) to induce diabetes. Those rats that did not receive STZ (vehicle injected) served as controls. The experiments began on each of the rats...

OHSU lab finds meth receptor that could lead to therapy

...d drug craving, olfaction ?the sense of smell ?and temperature regulation, to name a few. "With this kind of pharmacological profile and brain distribution, we hypothesized TAAR1 could mediate some of meth’s metabolic and behavioral effects," explained Grandy, who also directed the groundbreaking research. ...

Gene chips forecast ecological impacts of climate change

...s will be on finding ways to assess the effects of temperature stress and low pH, due to ocean acidification, on ...s that are changing in these systems are more than temperature alone. Due to the interaction of oceans with the atmosphere and the role of the ocean in carbon diox...

Conceptualizing a cyborg

...ts of a prosthetic, while sensory stimuli, such as temperature or pressure provides feedback to adapt the movements. The central feature of the proposed interface is the ability to create transplantable living nervous tissue already coupled to electrodes. Like an extension cord, of sorts, the non-electrode ...

Bumblebee house warming -- it takes a village

... to flowers. Whether and how they maintained nest temperature was poorly understood. But now scientists from th...e workers are effective at buffering the nest from temperature extremes. Some workers specialized in raising the temperature in a nest when they incubated the col...

Microfossils unravel climate history of tropical Africa

...ea Research obtained for the first time a detailed temperature record for tropical central Africa over the past 2...Atlantic Ocean during the last ice-age. This large temperature difference between land and ocean surface resulted in drier conditions compared to the current situa...

Florida Tech explores microalgae for biofuel

...ystems are difficult due to the openness to light, temperature and potential contamination. Lin will manipulate dependent variables such as salinity, nutrient concentrations, pH and carbon dioxide to test optimum conditions for growth. "Alternative energy is desperately needed for sustaining the economy, nation...

New measure of sexual arousal found for both men and women

...ct, women and men demonstrated similar patterns of temperature change during sexual arousal with no significant d... of female sexual arousal disorder will be genital temperature as measured by thermography," according to Dr. Yitzchak Binik, senior author of the research and Pro...

Fish growth changes enhanced by climate change

...Orange roughy. Because of the pervasive effect of temperature on the physiology and growth of marine animals, it... historical and modern oceanographic data indicate temperature trends very similar to the apparent changes in growth rates. In the south west Pacific east of Tasm...

Williams College biologist explores photosynthetic apparatus

...lobal climate changes to understand the effects of temperature on the photosynthetic capabilities of this ecologically important marine cyanobacterium. She hopes that the project will lead to a marked improvement in the ability to accurately model primary production in ocean ecosystems, as well as to a bette...

Cornell researcher helping develop quick, cheap HIV/AIDS test

... test, however, is being developed to endure harsh temperature conditions and be truly simple -- no batteries will be needed, for example." ...

Satellites shed light on global warming

...d contrasting information on ocean colour, surface temperature and sea level, scientists are exploring the many s...us for new ideas," Cipollini said. Sea surface temperature (SST) is one of the most stable of several geographical variables which, when determined globally, h...

Manual dishwashing study digs up dirt on dish cleanliness

...er than 110 degrees Fahrenheit—the minimum washing temperature recommended by the FDA—because it is uncomfortably hot. The FDA also requires that washing cause a 100,000-fold drop in amounts of bacteria on those dishes. To investigate effective lower-temperature dishwashing tactics, the researchers coated dis...

Dinosaur extinction didn't cause the rise of present-day mammals, claim researchers

...adiate around the time of a sudden increase in the temperature of the planet ?ten million years after the death of the dinosaurs. Professor Andy Purvis from Imperial College London's Division of Biology explains: "Our research has shown that for the first 10 or 15 million years after the dinosaurs were wiped...

MIT's ocean model precisely mimics microbes' life cycles

... in their size, and in their sensitivity to light, temperature and nutrient availability, then allows the ocean to self-select those most fit for survival in any particular area. What emerged after the model completed its 10-year virtual evolution -which took four to five days on a cluster of parallel compute...

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

...y to deduce the formula for converting between the temperature scales." Previously, Tyson worked with simpler models whose parameters could be determined by trial and error, a process modelers call "parameter twiddling." But he and his coworker, Kathy Chen, wanted to characterize all the protein interactions ...

Something new under the sun

...fferent climate factors in the greenhouse, such as temperature and relative humidity, can be measured. Subsequently the correct adjustments to the settings of the greenhouse are made to maintain the optimum climate. The precise nature of an 'optimum' climate depends on the objective. For example, the aim might b...

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