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Tag: "sources" at biology news

Researchers find Amchitka seafood safe for now

...ave come from the nuclear tests ?or was from other sources such as fallout, or even was naturally-occurring. For example, CRESP wrestled with what it meant to have more algae samples showing plutonium from Amchitka and more fish samples showing Cesium-137 from the reference site at Kiska. In all these cases ...

Beach pollution is worst during new and full moon

...esults might also help managers identify potential sources of pollution at beaches. "Most sources of enterococci at beaches are unknown," Boehm says. "Because we found tidal signals in enterococci d...

Restaurant seafood prices since 1850s help plot marine harvests through history

...orians are creatively mining a host of information sources such as the logs of schooner captains and salt tax collectors to reconstruct amazing and valuable insights into fishing and marine life decades and even centuries ago," says Jesse Ausubel, CoML project director for the New York-based Alfred P. Sloan ...

NRL scientists detect 'milky sea' phenomena

...sed to detect terrestrial and atmospheric emission sources such as fires, lightning, and human activity (city lights, fishing boats, etc.) around the world. However, there have been no previous reports or demonstrations of the OLS being used to detect bioluminescence. Dr. Miller and the research team search...

Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality

...xide (SO2) also detectable by SCIAMACHY. Large SO2 sources over China that overlap with nitrogen dioxide plumes are linked to power plants. Further to the west there is also sulphur dioxide produced from smouldering underground coal seam fires. Burrows is the scientist who - supported by an international ...

Center releases new public survey on stem cells

...yed. Much current debate focuses on whether other sources of stem cells - blood from the umbilical cord removed at birth, for example - might be as useful without the need to destroy embryos, but the scientific consensus so far is that embryos remain the best research choice. Typically, the embryos used ar...

'Acid rain' and forest mass: Another perspective

...rtain zones. This compound, deposited close to the sources of emission, is able to react with the acidic ions deposited at the same time. Subsequently, certain bacteria are capable of oxidising the compound, thus forming nitrate and liberating protons that acidify the soil. Amongst the effects of the deposit...

Researchers quantify more noise in gene expression

...d computer algorithms that identify the underlying sources of variation at the basic level of life: unscripted fluctuations within individual cells and variations between identical cells. "Scientists might assume that natural selection would prune any sloppiness at the level of gene expression, but recent s...

New brain scan technology could save babies' lives

... A helmet incorporating 32 light detectors and 32 sources of completely safe, low-intensity laser light is placed on the baby's head. The sources produce short flashes and the detectors measure the amount of light that reaches them through the br...

Discovering the first steps in transcription-coupled repair

...up with life DNA is constantly under attack from sources inside and outside the body, including sunlight, ionizing radiation, other environmental carcinogens, and free radicals from the cellular metabolism. DNA damage ranges from one or a few altered nucleotides in a single strand of the double helix, to b...

Overfishing may drive endangered seabird to rely upon lower quality food

...nd that the proportion of the most nutritious food sources was significantly higher for the murrelets of a century ago in the Monterey Bay region compared with the birds' modern-day counterparts. Compared with the murrelets' historic diets, typical modern pre-breeding diets during cool ocean conditions are c...

How E. coli bacterium generates simplicity from complexity

...latory networks in the 15,580 environments of food sources and electron acceptors. To their surprise, no matter what carbon source it ingests or electron acceptor used, E. coli exhibits only six distinct functional states. "This study gives a systems biology view of how a phenotype, or a 'network state' adv...

Seal rookeries could provide a reliable food source for endangered California condors, study finds

...dors, past and present, to determine if their food sources had changed over the centuries. "We wanted to fi...s and it will get them off some of the terrestrial sources with lead poisoning," Chamberlain concludes. "It would be fabulous some day to see condors feeding a...

Primates harvest bee nests in Ugandan reserve

...mportance of honey as one of the most concentrated sources of sugar and protein in the forest, and the fact that the park management plan allows collection of non-timber forest products, there is an abysmal lack of ecological information about the role of honey-making bees and the role of their natural preda...

Stem cells from muscles can repair cartilage

... the space between joints (synovium) might also be sources of stem cells, obtaining these cells is more invasive than muscle biopsies. The author also notes that patients could potentially serve as donors to themselves, since the current study used MDSCs from juvenile rats and other studies have shown such t...

Diabetes researchers pioneer islet cell xenotransplantation in primate studies

...ering from type 1 diabetes, we must find new donor sources to allow large-scale application of islet cell transplantation in humans," said Dr. Larsen. "While there is much work to be done these studies suggest that the rejection response to porcine islets can be surmounted." "The next step is to prove that ...

Frog’s ear canal may provide insights for understanding human hearing loss

...es and Institute of Biophysics. Additional funding sources for the study include China's State Key Basic Research and Development Plan and National Natural Sciences Foundation. ...

Of mice, men, trees and the global carbon cycle

...ise in the future, it is important to know all the sources that emit the gas and all the sources that soak it up. The amount of carbon dioxide in the atmosphere is well known, as is the rate of emi...

Marine mammals are on the frontline of failing ocean health

...about new data indicating that fish and other food sources - once thought to die too quickly to pass on brevetoxins ?can concentrate and carry the toxin long after an algal bloom. "This is surprising," he says. "We never suspected that there could be vectors like seagrass or fish." Many scientists believe ...

There's something fishy about human brain evolution

...resent in much lower amounts from terrestrial food sources such as mammals and plants. It was this combination of abundant shoreline food and the "brain selective nutrients" that sparked the growth of the human brain, he says. "Initially there wasn't selection for a larger brain," argues Dr. Cunnane. "Th...

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