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Tag: "fine" at biology news

Art and music for the birds

...lptor Elizabeth Demaray, an assistant professor of fine arts at Rutgers University—Camden, is testing the musical tastes of our fine feathered friends with an exhibition featuring four 10-foot red perches offering what are considered...

Math that powers spam filters used to understand how brain learns to move our muscles

...ble” learning patterns and use them to develop and fine tune new movements, whether babies trying to walk ...o mail you don’t want and “learning” as they go to fine tune what they exclude from your in-box. The computer model, Shadmehr says, almost precisely dup...

Migration alert -- How tumor cells home in on the lymphatic system

... are reinforced by the lymphatic’s own secretions, fine tuning the tumor cells’ migration and guaranteeing that they will home in on the lymphatic. To demonstrate this new concept, the researchers engineered a tissue culture model of the tumor-lymphatic microenvironment and developed computational mo...

In nature, proteins sweep up nanoparticles

...obes that may have lived eons ago. The presence of fine particulate sulfides in minerals is one such biosignature, although it is only suggestive of life. Now, the presence of sulfide nanoparticles intermingled with proteins promises to be a definitive biosignature. ...

Technique monitors thousands of molecules simultaneously

...ive reagent," Moeller said. "The active reagent is fine ?it does the chemistry I want it to do ?but as soon as it gets away from the turned-on electrode the reaction that inactivates it needs to take over." With an overall strategy in place, Moeller and his collaborators are working to expand the scope ...

Study warns deep-sea mining may pose serious threat to fragile marine ecosystems

...ping process will disgorge considerable amounts of fine sediment into the water column—a serious problem for vent organisms that feed by filtering the water in their habitat. The process will also raise the concentrated nutrients from the deep sea to the relatively nutrient-poor surface waters of the ...

Brain maps online

...l of detail, from a broad view of the brain to the fine details of nerves and connections. The website als... brains, and could help researchers in identifying fine morphological and chemical abnormalities underlying Alzheimer's, Parkinson's and other neurological ...

Nanotextured implant materials: blending in, not fighting back

...ake up much of this lining and create a texture of fine nanoscale bumps on the inside of the blood vessel. This contrasts strongly with most of the materials used in implants, which have microscale texture, but are nearly smooth at the nanoscale. When the researchers changed the surface texture of impl...

Darwin's famous finches and Venter's marine microbes

...siphoned seawater through a series of increasingly fine filters to collect the microbes, which they sent back to the J. Craig Venter Institute in Maryland. In the lab, the scientists shredded the collected genetic material in millions of random snippets and then determined their sequence. Based on ove...

Large size crucial for Amazon forest reserves

...ctually may have very specific requirements at the fine scale. Large areas of forest encompass a wide enough variety of local conditions ?and species, to ensure the survival of the Amazon and its inhabitants. In December, 2006, the Brazilian government established the largest protected area ever, 15 m...

Gene expression test reveals ER and HER-2 status of breast tumors

...from seven institutions. The samples included both fine needle aspiration biopsies and traditional biopsies. The team used 195 fine-needle biopsy samples to set gene expression thresholds that predicted ER-positive status with 90 percent accuracy and HER-2-positive status with 93 percent accuracy. They...

Bird sex is something else

...r survival. Birds, however, seem to be doing just fine without sexual equality of Z gene expression". ...

Ring-around-the-cell

...ectron microscope imaging that allowed them to see fine details of the ring structure, and a light microscope method in which specific features glow. Because each method captures different information at a different scale, combining them was tricky, but the two together gave a much more extensive picture ...

Biologists call for better choice of model organisms in 'evo-devo'

...y, select and breed. "Whilst this is generally fine in the context of development research, the benefits to evo-devo as a subject are limited. "There are upwards of 35 phyla of animals, and four of our six best models come from just one phylum. "However, that doesn’t mean that simply choosing n...

A sweet step toward new cancer therapies

...archers confirm the protein's identity. This works fine as long as the protein has not been modified after it was produced. But if other chemical groups such as phosphates, sulfates or sugars have been added, the identification method breaks down. "If sugars are attached, for instance, the weakest bond...

U of M researchers invent 'flashy' new process to turn soy oil, glucose into hydrogen

...cess works: The oil and sugar water are sprayed as fine droplets from an automotive fuel injector through a tube onto a ceramic disk made of a catalyst material--the elements rhodium and cerium--that guides the breakup of the feedstock molecules toward the production of syngas and away from water and carb...

Penn researcher shows that DNA gets kinky easily at the nanoscale

...ols of nanotechnology to examine molecules in such fine detail. "Common sense and physics seemed to tell us that DNA just shouldn't spontaneously bend into such tight structures, yet it does," Nelson said. "In the conventional view of a DNA molecule, wrapping DNA into a nucleosome would be like bendi...

Hopkins researchers discover how brain protein might control memory

...king Arc live only in the here and now. They learn fine in the short term, but tomorrow they will need to relearn everything," says Worley. And in the case of long-term memories that are better forgotten, such as that cigarette craving while sitting in a bar, a better understanding of how these memories f...

Spelling out cancer on the nanoscale

... MYC, BCL2, and AKT, in tiny samples drawn as very fine needle aspirates from hematopoetic tumor cells in ...f targeted protein inhibitors in mice. A series of fine needle-aspirated samples was analyzed, confirming a decrease in oncoprotein levels. The new nano...

Wild tigers need cat food

... naturally high rates of annual losses, and yet do fine because of their high reproductive rates," said WCS researcher Dr. Ullas Karanth, lead author of the study. "The conservation implications of this study show that effectively protecting reserves to maintain high prey densities is a key pillar in an ...

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