Tag: "vary" at biology news

Growing Up On Their Own: Smart Plastics Organize Themselves Into Useful Optical Devices

...ss of a human hair. By usingchemical techniques to vary the size of the spheres, the width of the framework,and the structure of the shapes they create, the team is able to preciselymanipulate how light travels through the crystals -- some of the same featuresthat determine whether opals are red, blue, or...

Swimming Proficiency Of Marine Mammals Ranks Them Among The World's Elite Animal Athletes

...rthe mammalian way of life. Energy requirements do vary with an animal's size due to metabolic factors. Aswimming grey whale, for example, expends less energy per pound than abottlenose dolphin. But Williams was surprised to find that the relationshipbetween body mass and energy use is the same for mammal...

Vanderbilt University Medical Center Forms Institute For Coffee Studies

...thful, Martin said. "Coffee's chemical components vary with how it is produced," he said. "Dependingon how the coffee beans are roasted, the chemical effects may be changed. Theidea is to make coffee as healthful as possible and reap any medicinal benefitsthat may be there." The Institute for Coffee Stud...

Experimental Antibiotic Promptly Kills Drug-Resistant Bacteria In Studies

...sed. The design allows researchers to periodically vary the concentration ofantibiotics in contact with the bacteria, simulating the half-life of a drug being absorbed, distributed and eliminated in the human body. "Changing the concentrations mimics the pharmacokinetic profile in patients,"Zinner said. "...

Managing For Deer, Moose, Elk, Wolves -- And People

...hus,the policy of allowing ecosystem components to vary is often criticized by apublic that perceives a lack of constancy in the landscape as reflective of poormanagement. The authors conclude that the best hope for resolving is throughthe use of adaptive management, where policies and strategies are reg...

Autoimmune Diseases Study Shows Differences Between Men And Women

...gy of pregnancy: The levels of some hormoneswill vary with a woman's menstrual cycle. During pregnancy, some hormonesincrease while others decrease. For example, women with multiple sclerosis andrheumatoid arthritis enjoy a lessening of disease severity during the ninemonths they are pregnant. But wo...

UF Researchers Show Common Compound Can Reduce Air Pollution

...ly and atvarying capacity, meaning their emissions vary greatly. Additionally, thedesign and equipment costs for the reducing gas technology are extremely high. Seeking a better method, Lee released known concentrations of nitrogenoxides through pellets of alumina, a common material found in many ...

NCAR Scientists, Aircraft, Instruments Head To Indian Ocean For Climate ChangeExperiment; UCAR Directs Operations

... understood that estimates inglobal climate models vary from almost no effect to more than enoughcooling to offset global warming resulting from greenhouse gasincreases. "A host of changes in cloud physical and microphysical properties arelumped under the term 'indirect effects,' " says NCAR scientist Wil...

Vesicle Chemistry: A New Way To Get Life-Like Reactions

...By usingdifferent types of phospholipids, they can vary the physical and chemicalcharacteristics of the membranes in a way that mimics the variations found innature, Zare says. The researchers found two ways to use the vesicles to produce minuscule chemicalreactions. The first approach involves immersing ...

How Can You Tell Whether Corn Is Fungus-Ridden?

...atspecific wavelengths, and that these wavelengths vary depending on the health ofthe grain. Because the emissions are short-lived, kernels can be heated andtested with TIRS as they pass by on a factory production line. Greene does not envisage either FTIR-PAS or TIRS replacing thefluorescence t...

Research Bears Fruit, And Patents

...arden utility of these cultivars canbe expected to vary among locations, and among different cultural systems withinregions." At Pennsylvania State University, Anne and Caroline have been rated at the topof formal consumer preference trials among 13 commercially availablefall-cropping raspberry cultivars...

New Key To Saving African Elephants

...e amount of land cleared. While the threshold will vary with theecosystem, in this study the threshold was reached when about half the elephanthabitat was lost and the rest fragmented....

Researchers Analyze Role Of Shear In Turbine Passage

...cale facility that uses an underwater jetnozzle to vary water velocity. Researchers have begun testing the impact tofish of velocities ranging from zero feet per second to 60 feet per second. They will identify the injury threshold - the points at which there are no, orfew, injuries to fish. "Thi...

Researchers take major step in identifying gene differences

... how gene sequences, and the proteins they encode, vary among human beings, theresearchers studied 75 genes and found sequence changes in all but one gene. The genes studied are those in the bloodpressure control pathway in humans, but the sequence patterns discovered have application to other common dise...

Good news for "wusses": Research links pain sensitivity to gene

People vary greatly in their sensitivity to pain: A tetanus sh...," saysUhl. They don't notice that sensitivity can vary because the differences can besubtle, he adds, "and masked by a strong emotional response to pain. ...

Afterburner reduces pollution

...oved further withreal-time, closed-loop control to vary auxiliary fuel injection during wastefeeding as demonstrated in sub-scale experiments....

"All my friends dream of artificial limbs": US, Russian nuclear labs work with prosthetics company to develop replacement knee

...t both nuclear laboratories.A knee must be able to vary the speed of its response. Then it needs to lock sothat its wearer doesn't fall when standing. "The knee is not simply a hinge,"says Lieberman. "If it were only that, it might swing back too far or notenough, letting the foot hit the ground too soon...

Elvis of E. coli releases second food safety music CD

...Champions." The topics of Winter's other parodies vary widely, includingpesticides ("I Sprayed It On the Grapevine" based on Marvin Gaye's classic), fatreplacers (olestra is the lyric substitute in Joe Cocker's "Feelin' All Right"),alternative food processing technologies ("Food Irradiation" is based on ...

Social behavior transformed with one new gene

...rmone itself. They found receptor distribution to vary greatly betweenspecies with marked contrasts between monogamous and polygamous mammals. In thenew research they inserted the vasopressin receptor gene from a monogamous voleinto a less social, polygamous mouse. This is the first time that a single g...

Genetic variation in sensitivity to estrogen may mask endocrine disruption

Genetically different strains of laboratory mice vary dramatically intheir sensitivity to estrogen, report researchers at the University of California, Davis, in the Aug. 20 issue of the journalScience. The findings by Jimmy Spearow, a reproductive geneticist, and MarylynnBarkley, a reprodu...

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(Date:8/1/2014)... Cannabis use among young people has spiked, with 29.3 ... marijuana at least once and 17 percent admitting to regular ... Say ‘Yes to Life,’ volunteers from the Church of Scientology ... factual information about drugs, to help reverse this alarming trend. ... Drugs, Say ‘Yes’ to Life,” volunteers have distributed 40,000 copies ...
(Date:8/1/2014)... brain plays a central role in regulating appetite and ... in the brain,s control of food intake and body ... process has been unclear. A new study ... that PPARγ activity in a type of neuron known ... response to high-fat diet. Sabrina Diano and colleagues ...
(Date:8/1/2014)... -- The U.S. Food and Drug Administration announced on ... help fight type 2 diabetes. Jardiance (empagliflozin) ... regimens to control blood sugar levels in the overall ... Office of Drug Evaluation II in the FDA,s Center ... statement. The FDA also recommended that Jardiance be ...
(Date:8/1/2014)... 01, 2014 Summer is here, and with ... during the summer, and they can be a pain for ... to help all their customers get rid of ticks and ... 6,000 eggs in the summer, which is why they are ... tall grass and woodland areas and carry a number of ...
(Date:8/1/2014)... benefits of a cancer diagnosis may improve health outcomes ... conducted by a researcher at the University of Houston ... writing intervention is the writing instruction. Otherwise, writing is ... a journal can be therapeutic, but oftentimes we don,t ... or not," said Qian Lu, assistant professor and director ...
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