Tag: "fine" at biology news
JCI table of contents, January 2, 2004
...or role in insulin resistance. IGF-1 maintains the fine
balance between insulin and GH in order to promote normal carbohydrate and lipid metabolism. In an accompanying commentary David Clemmons from the University of North Carolina discusses insulin, GH, and IGF-1 regulation and how they affect food intak...
'Homegrown' relief for victims of arsenic poisoning in South Asia
...ged in columns, provide a sturdy mechanism for the fine
iron powder, which would otherwise form clumps and clog the column, creating a pressure drop and making removal inefficient or impossible. The result is a hybrid sorbent that removes arsenic from water. SenGupta and Greenleaf wrote an article about t...
Scientists solve puzzle of how kinesin motor molecules walk or limp across cells
...s are particularly interested in understanding the fine
details of how kinesins walk across microtubules. "A number of diseases such as Huntington's and Alzheimer's - involve proteins glomming together in the cell in ways that they shouldn't," Block said. "The cell tries to get rid of these bad protein a...
New technique helps shed light on progression of dementia
...task again. The microspheres, by now lodged in the fine
endings of the arteries in the rats' brains, impaired the animals' ability to respond correctly to the light trials their hit rate was nearly half that of the control rats. "There was an obvious loss of input into the brain's blood vessel system, an...
Scientists believe ancient arachnids may have spun silk like modern spiders
...out the chemistry of the fossil site preserved the fine
details of these creatures, Easterday said. One tr... special about this area of Ohio that it preserved fine
details? Easterday explained that environments with little or no oxygen, such as a lakebed, could do...
Mimicking the human body with carbon black polymers
...at and skin. The researchers chose carbon black--a fine
powder made almost entirely of elemental carbon--because of its electrical conductivity and low cost. The impregnated polymers can be formed in a variety of shapes and sizes. A recent NIST publication* discusses the material and its low-frequency ele...
NIEHS-funded researchers find low-level ozone increases respiratory risk of asthmatic children
...en that is the prime ingredient of urban smog, and fine
particulate matter, which includes dust, dirt, smo...sthma symptoms. Repeated exposures to ozone and fine
particles at or above the federal standards can irritate or damage sensitive tissue in the airways a...
Paradox in the lungs resolved
... it with the other." The immune system must ride a fine
line in its protection of the lung, whose surface area covers an area about the size of a tennis court. It must quickly sound the alarm when it detects a potentially harmful organism or molecule. But it must also tolerate a certain amount of irritati...
Bones from French cave show Neanderthals, Cro-Magnon hunted same prey
... is a sure sign that Neanderthals did not have the fine
hand-eye coordination to do fine
butchering." In examining the Grotte XVI record, the researchers also found a sharp drop in the nu...
Stem cells delivered into back of eye hold promise for people with retinitis pigmentosa
... The retina also has an extensive vasculature -- a fine
mesh of blood vessels formed in the third trimester of human gestation and in the first month postnatally in mice by endothelial cells, the major cell type lining blood vessels. In normal mice, these retinal blood vessels form during the first three...
Trade Center debris pile was a chemical factory, says new study
...ality experts. The new work helps explain the very fine
particles and extraordinarily high concentrations ...earlier UC Davis study, the first to identify very fine
metallic aerosols in unprecedented amounts from Ground Zero. It will be essential to understanding ...
Body scanners for lab animals
...s used for scanning people cannot see sufficiently fine
detail for use on small animals such as mice and rats. The current machine, called MicroPET II, can resolve a volume of about one cubic millimeter, or one microliter, Cherry said. That represents an approximately eight-fold improvement over an earlie...
Hopkins is first US institution to obtain powerful genotyping system
...condition, and then, separately, to delve into the fine
detail of very small regions of DNA to figure out what's really happening," says Scott. With the appropriate controls and experimental set-up by trained technicians, the system determines the genotypes of all the samples and produces a score that rat...
Grant funds research to develop tissue-engineered solutions for heart disease
...ose of the five-year grant period. "This work is a fine
example of the unique synergy among research disciplines that define tissue engineering," said Alan J. Russell, Ph.D., director of the McGowan Institute. "At the very least, these projects will significantly enhance our knowledge base about tissue re...
ICSI and IVF are safe results from worlds largest, longest running study
... differences between the groups in either gross or fine
motor development; There were no differences between the groups in terms of behaviour problems or temperamental difficulties and no differences in measurements of parental stress; The rate of malformations was higher in the ICSI group compared to th...
Hebrew University researcher studies 'reorganization' of brain in blind people
...ch. Yet, Braille reading involves more than just fine
tactile judgments, since reading involves language and memory processes as well. Using functioning imaging (fMRI) in the congenitally blind, Zohary, together with his doctoral students Amir Amedi and Noa Raz, found that extensive regions in the occi...
Researchers challenge belief of how macrophage activity is controlled by biochemical brake pedal
...em works, the closer we get to being able to exert fine
control on the immune response when medically necessary," he said. Murray is senior author of an article on the research, which appears in the June issue of Nature Immunology. Anne-Laure Pauleau made the discovery as part of the St. Jude team. Paule...
Three Gorges Dam is an opportunity for ecoscience
...ale. At issue is experimental verification of the fine
points of Hierarchical Patch Dynamics, an ecological theory that inter-relates specific plant and animal populations, communities and habitats in a complex and dynamic linkages over diverse landscapes. "Historically, we have had only a few remarkab...
Benefits of lung surgery reported for emphysema patients
...With emphysema, breathing becomes difficult as the fine
architecture of the lung is destroyed, leading to large holes in the lung, obstructed airways and trapping of air because of reduced elasticity of the lungs. According to the NIH, emphysema costs more than $2.5 billion in annual health care expenses...
Five studies look at risks of differing particulate matter, including exposures on 9/11
...collapse of the towers were the far more dangerous fine
particles that can lodge deep into the alveolar sp... causing problems. He says initially most of these fine
particles were literally lifted out of the area by the gigantic dust plume visible in all the photog...
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