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Tag: "driving" at biology news

Two nerve cells in direct contact

...xample, engineers developing navigating robots and driving assistance systems rely on simple and robust algorithms such as those realized by nature in insects. The mechanisms of optical flow field analysis are supremely suitable for technical implementation. As part of two projects supported by the Federal M...

Detailed 3-D image catches a key regulator of neural stem cell differentiation in action

...anscribe information encoded by neuronal genes and driving the maturation of neural stem cells into specialized neurons. "Scp1 is an interesting twist on how genes can be regulated during development," says Pfaff. "In the past there has been a lot of emphasis on chromatin modifications and physical acces...

Artificial cornea offers better results for infants, some blind patients

...nsidered success. Now many of our patients are out driving cars, riding horses, and leading active lives, and several have near-normal vision soon after the operation." While natural corneas from donors continue to be the main source for transplants, such tissue can trigger a variety of problems, includin...

Small, smaller, smallest -- The plight of the vaquita

...coast of the Baja California Peninsula. What is driving the vaquita towards extinction" It is not, as is so often the case, degradation of its habitat. A risk factor analysis discounted pollution or the drastic reduction of freshwater flow from the Colorado River as primary culprits. It is also not a gene...

Hormone linked to brain's cravings for food and other energy sources

...ain functions. "This makes sense because the major driving force of life is seeking energy to survive," he said. "Future studies will explore the relationships between ghrelin and cocaine addiction." ...

Does natural selection drive the evolution of cancer?

...rive it towards malignancy. "Evolution is also driving therapeutic resistance," Maley adds. "When you apply chemotherapy to a population of tumor cells, you're quite likely to have a resistant mutant somewhere in that population of billions or even trillions of cells. This is the central problem in oncol...

Soil nutrition affects carbon sequestration in forests

... of carbon dioxide (CO2), the major greenhouse gas driving climate change. Building on preliminary studies reported in Nature, the researchers found that trees can only increase wood growth from elevated CO2 if there is enough leaf area to support that growth. Leaf area, in turn, is limited by soil nutri...

Handling HPV vaccines and screening: The views of 100 authors

...", according to Dr. Xavier Bosch, Guest Editor and driving force behind this monograph; "The background, the results, the challenges and a set of proposals are analyzed by a group of 100 independent experts, leaders in the various relevant fields". This monograph was officially launched during the 23rd Inte...

A human taste for rarity spells disaster for endangered species

... if society stigmatized activities responsible for driving a species to extinction and people could no longer take pride in displaying such "treasures." But for those who prize rarity above all else, only strengthened regulations and interventions will decrease the probability of a coveted species' extinctio...

Electronic chip, interacting with the brain, modifies pathways for controlling movement

...ol mechanical devices outside of the body has been driving the rapidly expanding field of brain-computer interfaces, often abbreviated BCI. The recent Nature study suggests that the brain's nerve signals can be harnessed to create changes within itself. The researchers tested a miniature, self-contained de...

Parental genes do what's best for baby

...lar ‘battle of the sexes?long considered the major driving force in a baby’s development is being challenged by a new genetic theory of parental teamwork. Biologists at The University of Manchester say the prevailing view that maternal and paternal genes compete for supremacy in their unborn offspring fails...

Gene therapy prevents the onset of diabetic symptoms in mice

...nce of burning fossil fuels, running factories and driving cars, has altered soils and reduced the number of sugar maple trees growing in the Northeast, according to a new study led by Cornell University researchers. The sugar maple is the most economically valuable tree species in the eastern United State...

Acid rain causing decline in sugar maples, say researchers

...nce of burning fossil fuels, running factories and driving cars, has altered soils and reduced the number of sugar maple trees growing in the Northeast, according to a new study led by Cornell University researchers. The sugar maple is the most economically valuable tree species in the eastern United State...

Zebra finch males prefer females with exaggerated maternal traits

...the skewed mating preferences that are crucial for driving the evolution of sexual dimorphism and exaggerated traits in birds may result directly from sexual imprinting. ...

Trials for new drug to overcome HIV

...its own it rapidly clears most HIV from the blood, driving down the levels tenfold in a matter of hours. The trial planned for this month is intended to discover how the drug performs as part of a combination treatment with other anti-HIV drugs, which is a more realistic situation. Fortyeight patients whose...

Scientists tie several cancers to common 'oncogene engine'

...s finding is that it suggests a common 'engine' is driving these seemingly unrelated cancers," Fisher said. "Therefore, it is plausible that common therapeutic strategies might be applied to the tumors as well." The newly grouped cancers ?melanoma, clear cell sarcoma, alveolar soft part sarcoma, and pediatri...

Hope I die before I get old?

... has been seen in other studies of everything from driving ability to intelligence, Lacey says. This bias may combine with negative attitudes about aging to help explain the study's findings, she notes. Further analysis of the study data will examine the impact of individuals' core beliefs on their predict...

Methane-belching bugs inspire a new theory of the origin of life on Earth

...complex molecules. "But that's not really what the driving force was in early evolution," Ferry asserts. "Nobody had properly considered thermodynamics." "The problem of early energy sources has largely been ignored by the classical origin-of-life field," Molecular Biology and Evolution's Martin says, "whi...

South Pacific plant may be missing link in evolution of flowering plants

...isk from pile driving. The frequency range of pile driving noise could interfere with their ability to communicate, find food and avoid predators. This has the potential to affect their behaviour, health and their ability to breed successfully. Lactating females and young calves might be particularly vulnera...

Dolphins at risk

...isk from pile driving. The frequency range of pile driving noise could interfere with their ability to communicate, find food and avoid predators. This has the potential to affect their behaviour, health and their ability to breed successfully. Lactating females and young calves might be particularly vulnera...

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