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Tag: "analyses" at biology news

Researchers find Amchitka seafood safe for now

...following the nuclear test shots. These biological analyses may now form a baseline for future testing of biota. The consortium conducting the study was the Consortium for Risk Evaluation with Stakeholder Participation (CRESP), an interdisciplinary multi-university organization that for a decade has independ...

Software 'agents' could help unmask reality of disease clusters

...ssible for them to carry out accurate geographical analyses of public health concerns, and may even result in misleading information being used in healthcare decisions. They suggest that new technology which uses software "agents" to explore data could provide healthcare professionals with more accurate and ...

Human brain is still evolving

...mber 9, 2005, issue of the journal Science. Their analyses focused on detecting sequence changes in two genes - Microcephalin and "abnormal spindle-like microcephaly associated" (ASPM) - across different human populations. In humans, mutations in either of these genes can render the gene nonfunctional and ca...

Updated data on novel HPV vaccine confirms efficacy in large population

...rim results. The researchers concluded from these analyses that the administration of this vaccine, known as ...ne or placebo at Day 1, Month 2, and Month 6. The analyses evaluated the incidence of cervical pre-cancers through follow up for an average of 20 months after ...

NASA satellite data provides rapid analysis of Amazon deforestation

...changes in Amazon land cover. Unlike MODIS data, analyses of high spatial resolution data demand extensive s...s study is that it shows MODIS can permit regional analyses of land cover in a matter of days, a substantial reduction in effort in comparison to the months now...

Freeze-dried mats of microbes awaken in Antarctic streambed

...of aerial photographs, coupled with carbon isotope analyses of the cyanobacteria that measured variation in atmospheric carbon over decades, indicated the streambed had been dry for about 20 years. "After we diverted the water into the channel, photosynthesis began the same day and the mats became abundant w...

NYU biologists map out early stages of embryo formation

...ocess like early embryogenesis as a whole." These analyses suggest that out of the almost 20,000 genes in C. elegans, the embryo requires a core set of less than 1,000 genes to coordinate the early events that guide the development of the animal. The results further suggest specific roles for new genes that ...

New gene scanning technology marks a major advance in disease research

... a gene which affects blood cholesterol levels. In analyses of nearly 10,000 middle-aged individuals, they found some rare mutations associated with very high cholesterol, some with moderately high cholesterol and some with no effect. This is the first time that it has been possible to find out whether there...

Molecular mechanism of feather formation found

... empirical evidence for this yet, but mathematical analyses lead us to believe that the addition of a third signaling factor leads to the development of the more complex pennaceous feather," Fallon says. " Our model supports paleontologic evidence that pennaceous feathers are more advanced than plumalaceous f...

Sea Ice May Be on Increase in the Antarctic

...d b cell function with age, they reported. Further analyses found that Sirt1 regulates genes involved in insulin secretion by b cells. "Together, these results establish that an increase dosage of Sirt1 has beneficial effects on mammalian physiology," Imai said. "Our findings also provide new insight into th...

Life-extending protein keeps blood sugar in check

...d b cell function with age, they reported. Further analyses found that Sirt1 regulates genes involved in insulin secretion by b cells. "Together, these results establish that an increase dosage of Sirt1 has beneficial effects on mammalian physiology," Imai said. "Our findings also provide new insight into th...

Helping in a selfish world

...ers combined behavioural observations with genetic analyses of relatedness in these fish groups and found that under specific ecological and demographic conditions unrelated individuals must "pay-to-stay" in the group and therefore may help more. "This fish species is particularly interesting because breeder...

Brain size may depend upon how neural cells are cleaved

...stream regulators of G proteins. The researchers' analyses showed that AGS3 is, indeed, expressed in progenitor cells. And when they "silenced" AGS3 expression in embryonic mouse brains, the resulting abnormalities mimicked those produced when Gβγ signaling was disrupted. Now that the role of Gβγ in neural ...

A slight difference and significant similarities

...or comparing other food plants," says Fiehn. The analyses were financed by the British Food Standards Agency. All in all, almost 2,800 potato specimens, cultivated in trial fields at the German Federal Agency for Agriculture and Food, were tested. A team of biologists, chemists and computer scientists from ...

Discovering an ecosystem beneath a collapsed Antarctic ice shelf

...cies of marine life may be uncovered in continuing analyses of the area as ecosystem experts sample the site. The international expedition was there on a U.S. Antarctic Program cruise to study the sediment record in the area vacated by the former ice shelf. The crew recorded a video of the seafloor at the end...

UNC computer, marine scientists collaborate to predict flow of toxic waters from Katrina

...usly, the code was used largely for after-the-fact analyses of coastal circulation, but researchers now believe it can help produce answers during a crisis. Blanton and Luettich, assistant research professor and professor of marine sciences, respectively, knew that to simulate the required 60 days of water v...

Reversal of role for a viral protein associated with the development of lymphoma

...erimental data with computational and phylogenetic analyses of several fruitfly and other insect species. "O...ion of large genes. Bioinformatic and phylogenetic analyses conducted by Lopez also indicate that recursive splicing plays a role in at least 124 fruitfly intro...

Carnegie Mellon University research reveals how cells process large genes

...erimental data with computational and phylogenetic analyses of several fruitfly and other insect species. "O...ion of large genes. Bioinformatic and phylogenetic analyses conducted by Lopez also indicate that recursive splicing plays a role in at least 124 fruitfly intro...

Gap-climbing fruit flies reveal components of goal-driven behaviors

...wed involve three motor programs. High-speed video analyses revealed that flies can flexibly combine, and iteratively improve, these three behavioral adaptations in order to traverse gaps much broader than their own body size. The decisive phase for the climbing success of a fly is the formation of a "bridge"...

Researchers devise new technique for creating human stem cells

...g the chromosomal makeup of the fused cells. Their analyses showed that the hybrid cells were "tetraploid" ?me...ell types." Furthermore, Eggan noted that genetic analyses of the fused cells revealed that the somatic cell genes characteristic of adult cells had all been s...

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