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Tag: "smaller" at biology news

Microcapsules like it hot and salty

...which attempts to make the capsule and its surface smaller on the one hand, and the electrostatic repelling force between like charges in the polymer shell which makes the capsule swell on the other. "Depending on the strength of the two competitors, the exact size of the capsule can be calculated in advance...

Parental genes do what's best for baby

...les will try to impose their genetic stamp so that smaller young are born. “The idea that imprinting evolves because of conflict between males and females over maternal investment in their offspring has become a generally accepted truth that has remained largely unchallenged,?said Dr Wolf. “But we have...

Fire ant-attacking fly spreading rapidly in Texas

...any as 12 different kinds of phorid fly in an area smaller than a football field. "No single phorid species will be a magic bullet," he says. Fire ants are not typically pests or even common in South America in large part because of harassment by the phorid flies. In the presence of these flies, ants hav...

With record resolution and sensitivity, tool images how life organizes in a cell membrane

... a scale larger than individual molecules but much smaller than entire cells. Understanding the chemical composition and organization of cell membranes-what components reside next to each other, how many of each there are and how they respond to their environment-may reveal the secret lives of cells in both ...

3-D ultrasound scanner could guide robotic surgeries

... from outside the body. As technology enabled ever smaller ultrasound arrays, the researchers engineered probes that could fit inside catheters threaded through blood vessels to view the vasculature and heart from the inside. Earlier this year, the team reported another advance: a 3-D ultrasound device inc...

St. Jude test of bird flu vaccine proves successful

...uenza virus. Moreover, other studies showed that a smaller version of the vaccine containing only the NP and M2 components provided significant protection against several strains of human influenza virus as well as the H5N1 "bird flu" strain. "Such cross-protection against bird and human influenza is consi...

Beaver dams create healthy downstream ecosystems

...extent, and duration of inundation associated with smaller floods; they also elevate the water table to sustain plant and animal life during the dry summer season. "This study broadens the view of the importance of beaver in the valley bottoms beyond the upstream ponds," Westbrook said. "We found that upstr...

Nanotubes used for first time to send signals to nerve cells

... could lift payloads into Earth orbit to computers smaller than human cells. Thin films of carbon nanotubes deposited on transparent plastic can also serve as a surface on which cells can grow. And as researchers at the University of Texas Medical Branch at Galveston (UTMB) and Rice University suggest in a...

Just like us, social stress prompts hamsters to overeat, gain weight

...e hamsters, which normally live alone. Because the smaller hamster was the intruder, the outcome of the dominance/submissive tussle was a foregone conclusion. The researchers found that, as a result of the stress of being placed in the home cage of a larger resident, intruder hamsters subsequently: ate sig...

Researchers to develop ultra-miniature implantable sensors to measure blood flow

...uce McKee, "Dr. Kan's technology could create even smaller patient monitoring sensors that simultaneously measure blood pressure, blood chemistry and temperature." For more information about Kan's research, visit http://people.ece.cornell.edu/kan , or visit http://www.cnf.cornell.edu for information abou...

Wasps queue for top job

...it queenship. Lower-ranked helpers, and helpers in smaller groups, worked hardest. ...

Pollutant haze heats the Arctic

...cooks faster in a microwave oven if it is cut into smaller pieces. "Same amount of potato, but more efficient cooking, because more of the interior of the potato is exposed to the penetrating microwave radiation," Garrett says. ...

Recent, rapid climate change is driving evolution of animal species

... of many large animals with longer life cycles and smaller population sizes will experience a decline in population size or be replaced by more southern species." "Consequently, genetic shifts in the timing of seasonal events should precede genetic shifts of thermal optima or increased heat tolerance over e...

UNH researcher restoring oyster reefs to Great Bay

...ersus sprigging it," says Grizzle, adding that the smaller reefs seem to show the best results. Oyster harvesting in the Great Bay estuary system ( http://www.oysters.unh.edu/Graphics/great-bay-map.gif ) ?the only oyster habitat in New Hampshire ?is almost exclusively a recreational pursuit, so restoring oy...

Speeding the search for elusive chromosomal errors

...data from these chips. "Our ability to detect even smaller rearrangements will only get better as there are improvements in the resolution of the microarrays and the computational tools required to analyze and mine the data generated," said Dr. Shaikh. As he pursues ongoing studies to enroll and study more ...

NYU researchers decorate virus particles, showing potential to enhance MRI capabilities

...es, we may be able to use MRI to image tumors much smaller than can currently be seen." ...

Carnegie Mellon researchers discover key deficiencies in brains of people with autism

...ated brain areas in people with autism, as well as smaller size of the corpus callosum, the white matter that acts as cables to wire the parts of the brain together. This latest research shows for the first time that the abnormality in synchronization is related to the abnormality in the cabling. The results...

Ultra low-dose estrogen shown safe for post-menopausal women

...adiol ?pure human estrogen ?that was over 44 times smaller and delivered through a skin patch. "The different between a patch and a pill is significant because medications taken in pill form are processed through the liver before they reach the bloodstream," explains Yaffe. "It's thought that estrogen in ...

Combined treatment extends life expectancy for lung cancer patients

...ancer in most cases had not spread and was usually smaller than 3 centimeters, though not in all cases. While this study did not address the timing of combined treatment, brachytherapy radiation was typically administered within two hours of thermal ablation while external beam radiation was given within thr...

Bedsores and bald hides: Novel roles revealed for a 'scaffolding' protein

... at making new proteins, and their skin cells stay smaller than skin cells with K17. Cell growth resulting from the manufacture of new proteins is in part controlled by several protein catalysts, or enzymes, including two called Akt and mTOR. The researchers found that cells lacking K17 also have a less acti...

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