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Tag: "mixed" at biology news

Helping chlorine-eating bacteria clean up toxic waste

...leanup sites. The bacterium also grows better in a mixed community with other kinds of bacteria. "There are some factors it needs from other organisms, and we don't know yet what they are," she said. Her laboratory will test the D. ethenogenes strains under a variety of different conditions, such as exp...

Hawaiian treasure, macadamia nuts good for the heart

...damia nut diet included macadamia nuts as a snack, mixed into meals, as a salad topping and in cookies and muffins. "The total fat was the same in both diets," says Griel. "We substituted the macadamia nuts for other sources of fat and protein in the diet. For example, we could switch skim milk for 2 pe...

DOE JGI sets 'gold standard' for metagenomic data analysis

...u have sequences from many different organisms all mixed up, and moreover, you don't have enough sequence from each to capture an accurate picture of the entire community, so you only get a glimpse of the identities of multiple genomes. All the publications to date have made the assumption that these tools...

Stanford-led study closes in on genes that may predispose some people to severe depression

... that baseline, environmental factors are likely mixed in as well, things such as non-genetic physiological problems or psychological traumas. Some 10 to 15 percent of people suffer from severe depression at some point in their lives, and 3 to 5 percent have it more than once. Women are twice as l...

Biodiesel study targets cleaner air, cleaner engines

... blended biodiesel, in which the renewable fuel is mixed with petroleum diesel. Evaluated blends had 5 percent and 20 percent biodiesel content, and were tested for engine horsepower and fuel efficiency. Environment Canada monitored exhaust emissions from tractors at the trial sites, including levels of ca...

The penalty of having a sister -- why sibling sex matters for male saiga antelopes

...itations in the ability of the mother to provision mixed twin litters in the womb," she said. The resea...ows for example, it is well known that calves from mixed litters are less fit. Female heifers from mixed litters are generally infertile. But unlike dairy co...

Nanotextured implant materials: blending in, not fighting back

...anostructured material to conventional titanium in mixed cell culture, they found that the nanoscale surface features encouraged endothelial cells to colonize the material and spread much faster than smooth muscle cells. Where endothelial cells established themselves, they formed a single thin layer that i...

'Marathon mice' elucidate little-known muscle type

...ave the oxidative metabolism of slow-twitch fibers mixed with the biophysical properties of fast-twitch fibers. Oxidative metabolism is by far the most efficient way of generating energy, Spiegelman said. In the current study, the researchers produced mice with higher than normal levels of the transcrip...

Xylitol reduces risk of cavities

...uld contain as much xylitol as possible and not be mixed with other sweeteners. ...

Scientists create dual-modality microbeads to improve identification of disease biomarkers

...orgia Tech Nanotechnology Center. The beads are mixed in a liquid such as urine. Viruses, proteins or other biomarkers are captured on the bead surface. After the beads are removed from the liquid, optical imaging is used to determine the concentration of a specific protein or virus in the liquid sampl...

Studies yield insight into the numerical brain

...g., two or eight), two digits (e.g., 2 or 8), or a mixed notation (two and 8). They hypothesized "that if the assumption of an abstract representation of numbers in the [parietal cortex] held true, the adaptation effect would be observed within and across notations. In contrast, in the case of nonabstrac...

Triplex assay used to assay duplex genomic DNA

...rought to a standard concentration, so they can be mixed with standard amounts of oligo probes for the purpose of automatic in solution assay. The instrument is easy to program, self-cleaning and inexpensive. Daksis indicated that she expected to soon publish data on the use of the Genome Flow® instrume...

New research may overturn conventional wisdom on drug-resistant tuberculosis

...sceptibility data, and the unknown contribution of mixed infections. Nevertheless, the findings are a warning. Although better diagnostics, drugs, and effective vaccines for TB are clearly needed, the authors said, "Our findings highlight the urgency of accelerating efforts to interrupt the transmission of...

Targeting tumors the natural way

...o integrin and tethered it to alpha-Gal. When they mixed this molecule with cells displaying high levels of integrin, the agent, by attaching to the receptor, decorated the cells with large amounts of alpha-Gal. In cell cultures containing human serum, the alpha-Gal then elicited the cell-destroying immune...

Baby fish 'smell their way home'

...ng. Ordinarily you'd expect them to be thoroughly mixed up and this would mean the population of one reef would be pretty much the same, genetically, as another," he says. "But that is not the case. There are major genetic differences between fish of the same species on reefs only a few kilometres or ...

Record ozone loss during 2006 over South Pole

...x) weaken, and ozone-poor air inside the vortex is mixed with ozone-rich air outside it. Envisat, the largest Earth observation satellite ever built, can localise ozone depletion and track its changes, enabling the rapid estimation of UV radiation as well as providing forecasting. The three atmospheric ...

Researchers seek to design first treatment for neuroAIDS

...hibit glycogen synthase kinase 3 beta (GSK-3b) and mixed lineage kinase (MLK). "The number of HIV patients...d that a second molecular target, an enzyme called mixed lineage kinase 3 (MLK3) may be "of equal or greater importance" than GSK-3b. HIV exposure throws off...

Selecting life: Scientists find new way to search for origin of life

...al suggestions of a plausible process by which the mixed right- and left-handed -amino acids in the primordial soup could be concentrated and selected on a readily available mineral surface. The challenge since has been to determine which of the countless biomolecules/surface interactions are the most like...

First major study of mammalian 'disorderly' proteins

...IFPs, i.e., fully folded into specific shapes); or mixed ordered or disordered proteins (MPs), which have both structured and unstructured parts. "This work further illustrates that the disorderliness of IUPs isn't just a curiosity," said Charles Galea, Ph.D., a postdoctoral fellow in Kriwacki's lab. "...

Wild gorillas carriers of a SIV virus close to the AIDS virus

...search at IRD, and Eric Delaporte, director of the mixed research unit UMR 145 jointly involving the IRD and the University of Montpellier 1, showed the chimpanzee subspecies living in the Congo Basin (2) to be the reservoir of HIV-1 virus group M, the source of the world pandemic and that of another, very...

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