Tag: "environment" at biology news
Study reveals new technique for fingerprinting environmental samples
...ordingly, can tell us about what's happening in an environment
without knowing the identities of the microbes liv...ricate physical and biochemical details of a given environment
without having to know the actual identities of the resident microbes. This finding is crucial for ...
NASA study finds snow melt causes large ocean plant blooms
.... Oxygen-depleted waters also provide the perfect environment
for thegrowth of a specialized group of bacteria called denitrifying bacteria.These bacteria convert a nitrogen-based nutrient readily consumable byplants in seawater, called nitrate, into forms of nitrogen that mostplants cannot use. One form of nit...
Buying time through 'hibernation on demand'
... diabetic's clot-resistant wound to an oxygen-free environment
would speed the healing process. While the notion of putting a human or a human organ into an oxygen-free state of biological limbo and then reversing the process at will with no ill effects may sound like science fiction, dozens of documented cases...
Researchers identify protein crucial for survival of Lyme-disease bacterium
...d to survive in ticks and why it has chosen a tick environment
to be its natural vector in nature. "It potentially could give us a target for eradicating the bacterium, because if you understand what it needs to sustain itself, then in theory you could disrupt that cycle by blocking whatever that mechanism is,"...
How the environment could be damaging men's reproductive health
...ge quantities of local fatty fish." POPs enter the environment
in a number of ways. Tarmo Tiido, co-author and Ph...r cancer in Lithuania may reflect the intrauterine environment
situation more than 20 years ago. However, cryptorchidism can be detected immediately after birth an...
CyberWalk - unconstrained walking in virtual worlds
...of how humans perceive and behave in their natural environment
is required. Human perception and cognition are ve...perfect, the behavior of the person in the virtual environment
changes - resulting in vertigo or indisposition. But what are the benefits of virtual worlds - apart...
A new study examines how shared pathogens affect host populations
...n. Studying only the target species or the abiotic environment
would not reveal the cause of the epidemic. Their results have not only important consequences for understanding the role of pathogens in species interactions but also provide a potential mechanism linking host biodiversity and ecosystem functioning....
Prenatal cocaine exposure exerts subtle effects on schoolchildren
...s, not more complex ones." The quality of the home environment
was even more likely than smaller head size to inf... In addition, they will assess the children's home environment
and interview their caregivers and schoolteachers. Deborah A. Frank, M.D., a professor of pediatrics...
New tool reveals secrets of migrating cells
...maging revolution to be able to go into the native environment
while keeping the intact organ alive and make movies of migrating cells." With two-photon imaging, Witt and Robey identified thymus cells they dubbed beeliners moving nearly two centimeters - almost an inch - per hour, which is fast in the realm of c...
Keeping cancer in check
..."We think that the enzyme interprets the energetic environment
of the cell," explains Jones. "It senses the stress a cell sees such as low oxygen, low glucose, or the presence of free radicals and, from this, can induce a check on replication through p53, acting in effect as a tumor-suppressor." For this study...
Researchers discover mechanism for multiplying adult stem cells
...isolate the skin stem cells, then subject it to an environment
that activates Oct4. This would cause the cells to multiply yet remain in their stem cell state. And because this process is reversible, after you have a critical mass of these cells, you can then place them back into the person where they would grow...
Motor transport in bio-nano systems
...ne realizes that the motor moves in a very viscous environment
since it steadily undergoes many collisions with a large number of water molecules. Because of these collisions, the molecular motor has a finite run length: After a few seconds, it unbinds from its track and performs random Brownian motion in the su...
Tollbooth ventilation system effective in protecting workers from traffic air pollution
...s. "It is wonderful to discover that the tollbooth environment
is doing what it is designed to do--protect workers from the hazardous environment
in which they would otherwise be immersed. It is important to note, however, that not all tollbooth ...
New thermometer reveals wet conditions on earliest Earth
...n years ago, which contrasts with the hot, violent environment
envisioned for our young planet by most researchers and opens up the possibility that life got a very early foothold," said E. Bruce Watson, Institute Professor of Science and professor of geochemistry at Rensselaer Polytechnic Institute. According ...
Children at risk, says Illinois agricultural economist who helped assess the world's ecosystem
...Nelson. Nelson noted that this study looked at the environment
from a human well-being perspective. In other words, how important are the services from ecosystems for human well-being? Food and clean water are obvious examples of ecosystems services but what benefits do we gain from conservation of biodiversity,...
New NSF-AAAS report highlights 'learning communities,' other STEM educational strategies
...esented students in any setting, said Ulseth. "Our environment
works even better for women than for men, on a percentage basis," he said. "We also have had success in retaining students from nearby American Indian communities." Overall, according to Ulseth, some 80 percent of Itasca's two-year engineering stude...
Certain fish have a special mating preference
...mpete the larger-endowed males in a predator-laden environment
because they have a faster burst speed than the ma...m has a higher chance of mating, but in a predator environment
he has a higher probability of dying," Langerhans said. "That's the cost, the tradeoff. On the oth...
Shared computing grid cuts data mountains down to size
... day." GLOW is a campus-wide distributed computing environment
in which hundreds of individual personal computer-sized processors work in concert to sort through the massive data sets acquired by people such as Schwartz; or to power the simulations that Smith, a UW-Madison professor of physics, uses to presage e...
ESA's Epidemio and Respond assist during Angolan Marburg outbreak
...cts to epidemiologists exploring links between the environment
and disease. Respond is a consortium dedicated to supplying satellite-based geo-information products direct to humanitarian users in the field, with partners including UNOSAT, an in-sector service provider within the United Nations community as wel...
NIH funds DOE lab for cellular studies
...tiny because it interacts directly with the cell's environment
and controls the transport of nutrients and other molecules, such as antibiotics, into the cell. The PNNL research team will study the transport of small molecules through proteins in the outer membrane in order to provide an understanding of the u...
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