Tag: "comparable" at biology news

Genetic mutations linked to the practice of burning coal in homes in China

...rbons generated during cooking with smoky coal are comparable to exposure levels experienced by coke oven workers. Co-authors of the study include Qing Lan, Ph.D., division of cancer epidemiology and genetics, National Cancer Institute; Wei-Min Gaol, Ph.D., department of internal medicine, University of Michig...

Scientists sequence genome of kind of organism central to biosphere's carbon cycle

...carbon dioxide, a major greenhouse gas, in amounts comparable to all the world's tropical rain forests combined. "These organisms are incredibly important in the global carbon cycle," says Virginia Armbrust, a University of Washington associate professor of oceanography and lead author of a research article ...

New study indicates arsenic could be suitable as first-line treatment in type of leukaemia

...treatment," said Dr. Ghavamzadeh. "The results are comparable to ATRA with chemotherapy and in our study it has actually proved to be better than ATRA with chemotherapy. What this means is that we now have the possibility of offering APL patients a new first-line treatment that avoids conventional chemotherapy....

Tips from the Journals of the American Society for Microbiology

... of P. gingivalis and A. actinomycetemcomitans was comparable in both groups, however T. forsythensis was detected more frequently in children without gingivitis appearing in 65% of the samples as opposed to 45% of the samples from kids with gingivitis. "The results of this study have s...

Wrapping a memory with an experience, capacity for recollection detected in non-human species

...mance. The researchers divided the rats into two comparable groups: a group in which the hippocampus was removed and a control group. When the rats were again tested, the results were compelling -- recollection was lost in rats without a hippocampus but familiarity remained intact. A further test of the con...

Reducing allergens in the home helps inner-city children with asthma

...me environment can produce a reduction in symptoms comparable to that achieved with asthma inhalers," said Dr. Kenneth Olden, director of the National Institute of Environmental Health Sciences. Children who participated in the intervention had 21 fewer days of symptoms than the control group in the fi...

Maine-based biophysics institute gets funding for first US-based 4Pi nanoscale microscope

...e the football itself, in 3D. The 4Pi represents a comparable increase in resolution, only on a nanoscale." "In addition to applications involving imaging of genes and nuclear structure," says Kenneth A. Ault, MD, director of MMCRI, "our researchers are particularly interested in using this microscope to image...

Battle between bubbles might have started evolution

...tions of genetic material that his group used were comparable to those found in living cells. "In contrast to the earlier idea that Darwinian competition at the cellular level had to wait until the evolution of lipid-synthesizing ribozymes or structural RNAs, our results show that all you would need is to have...

Green tea research leads to gum and other products

...iece of gum, Dr. Hsu said, noting that the cost is comparable to that of regular gum. He suggests chewing a piece at least 15 minutes for optimal health benefits. Mints and skin-care products will be on store shelves soon, he said, noting that fitness leader Denise Austin is creating a signature brand of green-...

Study of flu patients reveals virus outsmarting key drug

...ct, our population of patients might be considered comparable to one experiencing pandemic influenza in the absence of pre-existing immunity." The study of 50 Japanese children with influenza, says Kawaoka, suggests that oseltamivir-resistant viruses arise frequently in children treated with the drug. "We don'...

Environmental costs of home construction lower with wise choice, reuse of building materials

...concrete-frame home was 31 percent higher than the comparable wood-frame. The use of wood products instead of steel or concrete can farther reduce the greenhouse emissions from fossil fuels wherever lumber mills generate power and heat using bark, sawdust and other byproducts of milling. More than half the ene...

Gold quantum dots have applications in biological labeling, nanoscale optics

...ower excitation spectra, smaller particle size and comparable fluorescence to systems based on semiconductor quantum dots. Providing the "missing link" between atomic and nanoparticle behavior in noble metals, these multi-electron "artificial atoms" could also serve as light-emitting sources in nanoscale opto...

T. rex owes its giant size to the ultimate teenage growth spurt

...African elephant, the only living land animal of a comparable size. "We can now stop guessing about how T. rex and some of its closest relatives grew," Dr. Makovicky said. "We expect that this empirically based method of developing life patterns from small, amedullar bones [those without a hollow cavity] will ...

Growing pains: T. Rex was teenage giant

...journal Nature. T. rex's growth rate is comparable to that of the modern day elephant. But while elephants have a lifespan of more than 70 years, T. rex lived no more than 30 years. "We now know that T. rex lived fast and died young," said Erickson. Erickson and Peter Makovicky, dinosa...

Small animal imaging gives cancer clues

...chers touse mice more effectively to study cancers comparable to humandisease. The system can distinguish different stages of cancer andcould lead to more sensitive screening tests for cancer-fightingdrugs. Positron emission tomography (PET) is widely used for detecting andfollowing cancer in human patients. I...

Related productivity tools complement computed tomography in lung cancer detection

...agent for MRI. Iron oxide nanoparticles, which are comparable to the size of a virus, that can help in not only outlining tumors in the brain but also lesions that might have otherwise gone unobserved. The product has the potential to help in image-guided surgeries and improve diagnosis of lesions caused by mul...

Ocean scientists assess impact of seismic pulses in effort to protect whales

...maller systems, Maurice Ewing's 20-gun capacity is comparable to those aboard many industry ships. It provides the flexibility to design source arrays of many different sizes and power, allowing scientists to look deep below the ocean's surface to study problems as diverse as earthquake prediction and the ocean...

Reading hexametric rhyme supports cardiac synchronization, especially after a heart attack

... different measurements of each subject. To ensure comparable levels of physical activity during the three types of exercises, the subjects walked through the room at a pace of 50 steps per minute (given by an electric metronome). The three experiments had to be at least 24 hours apart but within 14 days. ...

Molecular motor shuttles key protein in response to light

...for our eyes to adapt to light, so we suspect that comparable mechanisms exist in humans." The light-detecting cells in fruit flies are similar to the rod and cone cells found in the human retina. One end of each cell contains the protein that directly responds to light, but other proteins critical for the ligh...

New lower-cost assay system equivalent to flow cytometry for accurate CD4+/CD8+ cell counts

...nd CD8+ T cell enumeration. The Guava assays offer comparable accuracy and reproducibility to the flow cytometry-based method, but are much simpler and more affordable to use." Absolute CD4+ and CD8+ T cell counts are measurements used to monitor disease progression in HIV/AIDS patients, to determine when to b...

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