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Tag: "based" at biology news

Farmed salmon could become an invasive species in forest streams

...f the farmed-versus-wild fish debate had validity, based on an extensive literature review. Here are some of the findings in the report: At present, breeding populations of escaped farm salmon are not known to exist on National Forest System lands, but the locations of Atlantic salmon farms and the...

Study examines risk of soft tissue sarcomas in hereditary retinoblastoma survivors

...e authors note that some of their calculations are based on few cases of these rare cancers. In addition, classification schemes for some sarcomas changed over the study period, so some cancer subtypes may have been classified differently depending on the year they were diagnosed. "Given the excellent su...

NT researchers discover breakthrough in malaria treatment

...for malaria. Both contained a combination of drug based on a Chinese herbal extract (artemisinin) with a longer acting antimalarial drug. The researchers found that both treatments provided initial cure from disease. However those receiving a treatment which stayed in the blood stream for longer were ...

Mimicking how the brain recognizes street scenes

...t Scene Database. The model scanned the scene and, based on its supervised training, recognized the objects in the scene. The upshot is that the model learned from examples, which, according to Poggio, is a hallmark of artificial intelligence. Modeling Object Recognition Teaching a computer how to r...

Hotspots of mercury contamination identified in eastern North America

...Research Institute in Gorham, Maine. The study was based on samples collected over four years by the Northeastern Ecosystem Research Cooperative and made use of 7311 observations for seven species. The study report in BioScience is accompanied by an overview article, written by Charles T. Driscoll of Syrac...

Columbia scientists determine 3-dimensional structure of cell's 'fuel gauge'

...ecision regarding whether fat is stored or burned, based on the amount of energy in the cell. When the energy level of a cell is high, meaning that the cell contains high amounts of an energy-carrying molecule known as ATP, AMPK directs cells toward "anabolic" activities like storing the extra energy as fa...

Are one-third of costly implanted heart devices unnecessary? New study suggests yes

... Journal of the American College of Cardiology, is based on data from 768 patients who were candidates for ...nd the taxpayers who support it. That analysis was based on assumptions about MTWA testing's ability to predict risk ?assumptions that can now be adjusted ba...

When your brain talks, your muscles don't always listen

...e's never looked back. "My early interests were based on sport, but my career in this field now allows me to address a much larger population that needs our knowledge," Knight said. "Exercise is still the means for improvement, and aging is a process that unites us all." ...

Africa's first large-scale HIV vaccine study launches

...ine trial will determine if this vaccine, which is based on clade B HIV, has the potential to protect again...IV Research Unit, University of the Witwatersrand, based at the Chris Hani Baragwanath Hospital in Soweto. "Community involvement and education initiatives i...

How fish species suffer as a result of warmer waters

...ween global warming and declining fish stocks were based entirely on statistical data. However, in order to estimate future changes, it is essential to develop a deeper understanding of the effect of water temperature on the biology of organisms under question. A new investigation, just published in the sc...

NASA predicts nongreen plants on other planets

... as part of the NASA Astrobiology Institute (NAI), based at the NASA Ames Research Center in California’s S...have different dominant colors for photosynthesis, based on the planet’s atmosphere where the most light reaches the planet’s surface. The dominant photosynt...

Cold sore virus might play role in Alzheimer's disease

... Ph.D., on the project. The findings, which are based on measurements of the activity levels of the herpes virus in the brains of mice with different forms of the human ApoE gene, bring together several lines of research that have pointed toward a possible role for herpes in Alzheimer's disease. Ruth...

Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex

... that birds evolved from dinosaurs, but that’s all based on the architecture of the bones," said John Asara, director of the mass spectrometry core facility at Beth Israel Deaconess Medical School and HMS instructor in pathology, who sequenced the protein fragments over the course of a year and a half usin...

Antifungal drug kills TB bug

...e against TB anyway," said Professor Munro, who is based in the University’s £38 million Manchester Interdisciplinary Biocentre. "People in places like India or Africa would be given antibiotics but often not in sufficient quantities to kill the bug completely; this is how resistant strains develop and ...

Secret of worm's poison pill box protein could produce new natural insecticide

... XptA1 and thus how it worked. The research team, based at the University of Warwick’s horticultural resea...offer an alternative to current commercial protein based insect toxins have been in use for 40 years and are now starting to meet some resistance. This poten...

New sucker-footed bat discovered in Madagascar

...cies is obviously different from the known species based on pelage coloration, external measurements and cranial characteristics, according to the researchers. Myzopoda are often found in association with broad-leaf plants, most notably Ravenala madagascariensis or the Travelers' Palm, a plant that is end...

Wired for sound: How the brain senses visual illusions

...ce that perception of the illusory second flash is based on a very rapid and dynamic interplay between the auditory and visual cortices of the brain ?on a time scale less than one tenth the blink of an eye." Mishra said. Interestingly, the pattern was very different between individuals who did or didn't s...

Rapid, Low-Cost DNA Testing

...ut only the targets. Professor Rothberg's assay is based on the electrostatic properties of DNA. The principle underlying the method is that single-stranded DNA and double-stranded DNA have significantly different affinities for attaching to ionically charged gold nanoparticles. Because ions have electr...

Early-stage sperm cells created from human bone marrow

...he North-east England Stem Cell Institute (NESCI), based at the Centre for Life in Newcastle upon Tyne. For the experiment, Prof Nayernia and his team took bone marrow from male volunteers and isolated the mesenchymal stem cells. These cells have previously been found to grow into other body tissues su...

New study sheds light on 'dark states' in DNA

... a technique called transient absorption, which is based on the idea that molecules absorb light at specific wavelengths, and allows them to study events happening in less than a picosecond. They found that DNA dissipates UV energy through the dark state 10-50 percent of the time, depending on which DNA ...

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