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Tag: "along" at biology news

Scientists to track impact of Asian dust and pollution on clouds, weather, climate change

...light for photosynthesis. Tiny hairlike structures along the outside of the algae propel it toward the light. These structures are controlled by channelrhodopsin-2, a so-called "ion channel," which reacts to light by stimulating movement toward it. While researchers previously have used channelrhodopsin...

Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward

... respond dramatically to increases in temperatures along the Antarctic Peninsula," explained Berry Lyons, p...ns southward down the peninsula as sea ice lessens along its margins," Lyons said. "Gentoo and chinstrap penguins are shifting south into areas now populated...

Common algae helps illustrate mammalian brain electrical circuitry

...light for photosynthesis. Tiny hairlike structures along the outside of the algae propel it toward the light. These structures are controlled by channelrhodopsin-2, a so-called "ion channel," which reacts to light by stimulating movement toward it. While researchers previously have used channelrhodopsin...

Ethanol vehicles pose a significant risk to human health, study finds

...eles can expect 650 more hospitalizations in 2020, along with 1,200 additional asthma-related emergency visits.'' The deleterious health effects of E85 will be the same, whether the ethanol is made from corn, switchgrass or other plant products, Jacobson noted. ''Today, there is a lot of investment in e...

Amur leopard still on the brink of extinction, scientists say

...ecies. In February and March, World Wildlife Fund along with the Wildlife Conservation Society and the Pacific Institute of Geography of the Russian Academy of Science, conducted a routine snow-track census of leopard numbers. "The recent census confirmed once again that the Amur leopard survives on ve...

Scientists map key landmarks in human genome

...s called histones, and the nucleosomes are located along the chromosomes like beads on a string. Nucleosomes have multiple functions, including allowing several feet of DNA to be packed tightly into a cell's nucleus. They also regulate gene expression, or activity, by determining whether DNA sequences c...

Applied scientists create wrinkled 'skin' on polymers

...ditional techniques. The patterns can be generated along desired paths by simply controlling the relative movement of the ion beam and polymeric substrate. It's almost like using an airbrush on fabric. At a smaller scale the desired morphology of wrinkles can be achieved by controlling the ion beam intensi...

Sunshine pill for prostate cancer in 2009

...patients in the advanced stages of prostate cancer along with chemotherapy drugs. Drug makers came up with the idea because vitamin D from sunlight improves the prognosis of certain cancers. But taking natural levels of the vitamin has no effect. Novacea, the company that makes Asentar, produced a novel f...

New synthetic self-assembling macromolecules mimic nature

...can have alternating positive and negative charges along the backbone. The rods self-assemble and the aggregated structures are remarkable stable in saline solution, Turner said. "The early results of this study suggest that these charged polymers self-assemble by like-charge interactions similar to suc...

Nanotechnology shows promise as next wrinkle fighter

...e, an assistant professor of chemical engineering, along with Ph.D. student Troy Hendricks, published an online article in the American Chemical Society's Nano Letters in December 2006 that outlines the potential of using infinitesimally small nanoparticles ?50nm ?between films to smooth out the tiny buckl...

Computer imaging assists with facial reconstructive surgery

...a simple reproducible measurement that can be used along with established soft tissue measurements as a guide for profile facial analysis.?...

The origin of the brain lies in a worm

...s have a CNS in the shape of a spinal cord running along their backs, insects and annelid worms like the earthworm have a rope-ladder-like chain of nerve cell clusters on their belly side. Other invertebrates on the other hand have their nerve cells distributed diffusely over their body. Yet, all these spe...

New test for most virulent HPV strains under study

...hnologies, Inc., in Madison, Wis., is being tested along with an assay that looks for the presence of 14 types of cancer-causing HPV. A test that detects 13 types of HPV already is commercially available, so the new test could become the second non-type-specific HPV test on the market. Dr. Ferris, who w...

Update on census of world's most endangered cat -- Female Amur leopard found dead

...ld.? In February and March, World Wildlife Fund, along with the Wildlife Conservation Society and the Pacific Institute of Geography of the Russian Academy of Science, conducted a routine snow-track census of leopard numbers. World Wildlife Fund led the 2007 census of Amur leopards. WWF says encroachi...

Living with water scarcity -- world must act now

...red potential that lies in better water management along with non-miraculous changes in policy and production techniques" says Margaret Catley Carleson, Chair of the Global Water Partnership, "but world leaders must take action now." As Sunita Narain, 2005 Stockholm Water Prize Winner says, "this issue mu...

Tiny clue reveals new path toward heart disease

...age" where DNA variations appeared to be inherited along with the disease. They found just such a region: a small section of the long arm of chromosome 3 where just a handful of genes were located. Chromosome 3 is one of the 23 pairs of chromosomes that comprise the human genome. In the current study, t...

Prehistoric mystery organism verified as giant fungus

... on Prototaxites in 1859, based on specimens found along the shores of Gaspé Bay in Quebec, Canada. Hueber pored through Dawson’s field notebooks, written "in a completely illegible scrawl," Hotton said. "Fran spent months deciphering them for clues about the localities where specimens had been collecte...

Walking molecule now carries packages

... two carbon dioxide (CO2) molecules and carry them along its straight path. "Carrying a load slows the molecule down" explained Bartels. "Attachment of one CO2 molecule makes the carrier need twice as much energy for a step, and a carrier with two CO2s requires roughly three times the energy. This is no...

Tears reveal some of their deepest secrets to researchers

...n cellular signaling and communication in the eye, along with the role that the lipid may play in dry eye. "Dry eye is really a disorder of symptoms that irritate the eyes," Nichols said. "Not everyone with dry eye responds to the same treatment. If we could find individuals with varying oleamide levels...

'Ancestral eve' was mother of all tooth decay

...cterium associated with dental caries, has evolved along with its human hosts in a clear line that can be traced back to a single common ancestor who lived in Africa between 100,000 and 200,000 years ago. S. mutans is transmitted from mothers to infants, and first appears in an infant’s mouth at about...

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