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Tag: "bottom" at biology news

How to grow a bigger brain

...f the brain when small stones are scattered on the bottom of their tank, according to a new study by researchers at UC Davis. The brains of those young fish were closer to those of salmon reared in the wild, and the fish also showed behavior closer to wild than to hatchery-reared fish. "There's an obvious ...

Not just the birds

...edator strongly affected plants and animals at the bottom of an island food web by eating organisms that transport nutrients between ecosystems. "An introduced predator alters Aleutian island plant communities by thwarting nutrient subsidies," is published in the February issue of Ecological Monographs. A...

UMaine teams with fishermen to study affects of trawling on seafloor ecology

...seafloor communities that have been protected from bottom trawling for two, four, and six years, Watling est...on begin to undertake measures to conserve complex bottom habitat, there will be little chance that fishery will ever recover to levels seen 50 or 100 years a...

Advanced genomics and proteomics improve the diagnosis and treatment of a deadly lung disease

...nd thereby dictate key developmental events. "The bottom line we've learned from the structure is that Dicer is a molecular ruler," Doudna explained. "It gives us a lot of insight into how the mechanism works." Dicer, which is ubiquitous in the cells of higher animals, including humans, is a widely studie...

Molecule does more than slice and dice RNA

...nd thereby dictate key developmental events. "The bottom line we've learned from the structure is that Dicer is a molecular ruler," Doudna explained. "It gives us a lot of insight into how the mechanism works." Dicer, which is ubiquitous in the cells of higher animals, including humans, is a widely studie...

Curry and cauliflower could halt prostate cancer

...uts, kale, cauliflower, kohlrabi and turnips. "The bottom line is that PEITC and curcumin, alone or in combination, demonstrate significant cancer-preventive qualities in laboratory mice, and the combination of PEITC and curcumin could be effective in treating established prostate cancers," said Ah-Ng Tony ...

Discovery of new molecular tools for biosynthesis could lead to advances in use of pectin

...etic genes, Hahn said the research is still at the bottom rung of the ladder, but the team has for the first time genetic tools that should help to identify multiple genes encoding enzymes involved in pectin biosynthesis. Pectic polymers appear to have multiple roles in growth, development and disease resi...

Mouse study reveals human X-SCID gene therapy poses substantial cancer risk

...e that serves a single function, says Verma. "The bottom line here is that if you replace a gene that has multiple effects, you have to know more about its regulation and its ability to affect other genes, and that requires extensive preclinical work and a much more careful analysis," he says. X-SCID is c...

Whole-genome study at Johns Hopkins reveals a new gene associated with abnormal heart rhythm

...o recover from the ventricular beat - when the two bottom chambers of the heart pump. Corresponding to the "lub" part of the "lub-dub" pattern of the heartbeat, an individual's QT interval remains constant. This interval is partly dependent on one's genetic constitution and, moreover, genes also play a role...

Embryos tell story of Earth's earliest animals

...ulfide exists in significant concentrations at the bottom of the ocean, especially in the vicinity of deep sea vents. Because hydrogen sulfide is extremely toxic (and flammable), the scientists used beta-mercaptoethanol, which exerts similar effects. The scientists also found that embryo size does not inf...

Microbes under Greenland Ice may be preview of what scientists find under Mars' surface

... study of methane-producing bacteria frozen at the bottom of Greenland's two-mile thick ice sheet could help...ments within about 100 meters, or 300 feet, of the bottom registered levels of methane as much as 10 times higher than would be expected from trends over the ...

New understanding of regeneration gained by Forsyth scientists

... this process. When the worms are cut in half, the bottom section of the worm grows a head and the upper section a tail. Scientists have suspected that the ability of previously adjacent cells (on either side of the cut) to adopt radically different fates, as is the case with planaria where the cells have ...

Tsunami + 1 year: Reviving exhausted fisheries should trump replacing boats, gear, experts say

...ghbouring area. For example, the total biomass of bottom swimming (demersal) fish at depths to 50 metres in the Straits of Malacca off the west coast of Malaysia declined to 11% of levels at the beginning of the 1970's. A similar trend is found for deeper waters of the Straits, for Indonesian fisheries in...

Katrina floodwaters not as toxic to humans as previously thought, study says

...he samples, which included both surface waters and bottom samples, were taken within five to nine days after flooding occurred. Additional samples were also obtained from the 17th Street drainage canal, after pumping of the floodwater began, to evaluate the flood's impact on Lake Pontchartrain, the receivin...

Deep treasure to be found in Oculina Bank

...Area of Particular Concern (HAPC) where the use of bottom trawling, longlines, fish traps and anchoring by f... has further restrictions including prohibition of bottom fishing for snapper and grouper species. However, surface trolling for species such as dolphin, tuna...

Polymer gel can block toxic leakage problem in gene therapy

...t jello-like mixture made it hard to inject. "The bottom line is that when people try to do gene therapy on cancer they must inject the genes into the tumor," Yuan said. "One way would be to try and inject the genes into the bloodstream. But that won't work because the virus particles are too large to get ...

Why Christmas trees are not extinct

... of a meter versus one billionth of a meter. The bottom line is that conifers have shorter conduits and fewer valves, both of which would increase resistance to water flow, "but they compensate for that because each individual valve is so much more efficient," Sperry says. "The flow resistance through a v...

The Antarctic Ocean floor

...er hand the Box-corer is cast and once it hits the bottom it takes a 50cm x 50cm sample thereof for subsequent analysis on deck. With this sample we can quantify the number of each species per square metre, its biomass, and so on. Thus it is known as a quantified sample of the ocean floor. When the samples...

Past illegal blood donation in China linked to hepatitis C virus infection

... that "short cuts, shoddy practice, pursuit of the bottom line, and lack of oversight can have devastating outcomes, not only for patients but also for donors." ...

NC State researchers redesign life for Mars and beyond

...ion the wayit does in its original organism. "The bottom line is that we were able to produce the P. furiosus superoxide reductasegene in a model plant cell line and to show that the enzyme has the same function and properties of the native P. furiosus enzyme," Boss said. "The fact that the plant cells wou...

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