Tag: "pulled" at biology news

Successful 'Green' Solvent Found For Problematic Chemicals

...naphthalene solution, the carbondioxide completely pulled the naphthalene out with it, yet left all of the ionicliquid behind. When the resulting supercritical carbon dioxide/ naphthalene mixture wasdepressurized, the carbon dioxide returned to its gaseous form, leaving puresolid naphthalene. While...

UT Southwestern researchers find lever involved in ultrviolet-ray sensitivity

...s as machinescranking through the steps: The DNAis pulled apart into separate strands, cuts are made, and the damaged part istaken out. This process probably requires a change in the shape of the repairproteins, just like a lever moving on a piece of industrial equipment," saidRussell. "We believe the prote...

Cincinnati chemists develop microsensors for nuclear waste cleanup, medical applications

...e system works: A mix of negativelycharged ions is pulled intothe sensor by the selective coating. The applied potential turns the compound ofinterest yellow. A bluelight is shined through the detector portion of the sensor, and the compound isdetected and measured. "The color of the light coming in here i...

Major grants support immunology, transplant and diabetes research at the University of Chicago

... many superb scientists,such as the research teams pulled together by Professor Bluestone." In patients with type 1, or juvenile, diabetes, the insulin-producing betacells, found in pancreatic islets, have been destroyed. Scientists have beentantalized for more than 25 years by the idea of transplanting he...

Hominoid genes meet on middle ground

... a recently active form of gene copying, which has pulled a disparate collection of genes to the central regions of hominoid chromosomes and thus created a potential breeding ground for new human genes....

Threatened Galapagos plants are focus of biologist's field guide

...nated thegoat population on one of the islands and pulled up or poisoned encroaching vegetation on others, butthe problem is still overwhelming for a country that does not have unlimited resources. "Some people might ask, 'why bother?'" McMullen said. "Certainly from a practical standpoint noone will miss ...

Pitt team first to illustrate mechanisms of chromosome missegregation in cancer cells

... the cell divides, the chromatids separate and are pulled by the microtubules to opposite poles. Thus, two ... two centromeres of this unusual chromosome may be pulled to the opposite spindle poles of the cell, forming an irregular, long chromosome bridge between the ...

Researchers unlock secrets of directional cell movement

...eins, float freely in the body of the cell but are pulled to one side when the G-protein signals are activated. The researchers did this by attaching fluorescent green protein tags to PH domain proteins and then peering through a microscope to determine to which side of the cell these tagged proteins flocke...

RX for Hawaii's dry forests: no cows and lots of hard work

... 90%. Since then, the researchers have sprayed and pulled out individual clumps of fountain grass and today it covers only 4% of the preserve. In 1997 Cabin and his colleagues found that canopy tree regeneration had increased tremendously. Before the fountain grass and rodents were controlled, virtually no...

Economic realities depleting arsenal of antiparasitic drugs

...able, no longer manufactured or in danger of being pulled from the market simply because they are not economically viable, say researchers from the Baylor College of Medicine and Centers for Disease Control and Prevention (CDC) at a presentation during the annual meeting of the American Society of Tropical...

Novel protein is both ion channel and enzyme

...se of calcium from stores within the cell. "Loren pulled out this kinase on a yeast two-hybrid screen that appeared to be quite unusual, and at first he thought that he had isolated the whole protein," said Clapham. "In searching genome databases, he discovered that it turned out to be only a segment of a ...

Research determines how plants tell which way is up

...myloplasts have fallen to the bottom of the cells, pulled there by gravity. Boss says that the continued increase in InsP3 may allow a plant to determine whether it has been knocked to the ground, or is merely swaying in the wind. That signaling continues for about 30 minutes in oats and between two to four...

New technique answers one of waters basic mysteries

...he number of protons, or hydrogen nuclei, that are pulled from a water molecule and roam freely. The number of these free protons determine how water behaves when it comes in contact with other substances, playing a crucial role in nearly any biological process that includes water. Since the 1950s, scientis...

UC Berkeley chemists detail secrets of ionization, reasons behind water's central role in chemistry of life

...eaks, and a free proton is created. "The proton is pulled far away 100s and 100s of times without leading to auto-dissociation," Chandler said. "This is the part that is surprising and that people didn't know. What finally leads to dissociation is, somewhere along this wire of hydrogen bonds, when there jus...

Sleep in early life may play crucial role in brain development

...lasticity, or 'learning,' in the brain as if you'd pulled an all-nighter repeating your review of the material," says Stryker. Significantly, the researchers determined that the amount of plasticity in the brain depended on the amount of sleep known as non-rapid eye movement, a deep, quiet, slumber marked ...

Mistaken attachments cause cancer-promoting chromosome distribution errors

...ly the kinetochores that Salmon studied were being pulled from both sides. Thus this type of error is not detected by the cell, and can easily lead to mistakes in the number of chromosomes distributed to each cell. Such mistakes are commonly a trigger for cancer....

High-flying UC Berkeley students ride "vomit comet" in search of better way to cut bone loss in space

...r straps if, at the same time, another rubber band pulled them forward. "The idea is, if you could combine a...rt zone, and a lot easier than running when you're pulled down by a force of one G." Staff members with the NASA program seemed intrigued by the students' exp...

Rensselaer effort to pull mussels at Lake George looks promising

...00. Since April of this year, however, divers have pulled only 352 mussels. Of course, I cant guarantee that...titute. More good news is the size of the mussels pulled this year: All are too large to have been born in 2000 or 2001. Last years harvest seems to have cul...

Biologists: Cell nucleus surface more complicated than expected

...oplasts have fallen toward the bottom of the cell, pulled there by gravity. Research on how gravity affects plant growth is important for agriculture and for future manned space flights, which will require plants to provide food, cleanse water, and turn carbon dioxide into breathable oxygen....

Montana State University begins major trout and salmonid book collection

...s one of my personal favorites," Morton said as he pulled an 1839 edition of "The Fly Fisher's Entomology" from the shelf, "because the hand-colored illustrations are so exquisite." To date the collection comprises the library's original acquisitions plus two large donations. One donation, with more than ...

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