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Tag: "measure" at biology news

War on terror meets war on cancer

...ic activity," Hegg says. "Being able to accurately measure this number is often important in obesity research...ic rate," Hegg says. "Thus, having a second way to measure metabolism would be beneficial." A potential second method could measure oxygen and perhaps hydro...

Oil spills and climate change double the mortality rate of British seabirds

... North Atlantic Oscillation (NAO) index (an annual measure of a large scale climatic phenomenon affecting winds, temperature and rainfall) for the past 30 years, has had a negative effect on the guillemot population of Skomer Island. Professor Tim Birkhead of the University of Sheffield said: "Prior to our...

Scientists observe how a close bond activates the immune system

...hysically manipulate the immunological synapse and measure the effect on T cell signaling," says Michael L. Dustin, Ph.D., the Irene Diamond Associate Professor of Immunology and Associate Professor of Pathology at NYU School of Medicine, and one of the lead authors of the study. The research by Dr. Dustin ...

Bigger brain size matters for intellectual ability

...magnetic imaging (or MRIs) of brain structure as a measure of ability in student and workforce settings. "We...ful if, in the future, we use MRI brain scans as a measure of ability in any selection process," she said. ...

Underlying cause of massive pinyon pine die-off revealed

... woodlands for the years 1989 through 2003 using a measure of vegetation greenness known as Normalized Differ...those of the recent drought, 2000-2003. "By every measure we looked at, the recent drought was hotter," Breshears said, adding that, if anything, the 1950s dr...

Researchers quantify more noise in gene expression

...es of the gene pair per cell, the team was able to measure the extrinsic-noise floor, a parameter that is needed to create a mathematical algorithm describing gene-expression variation in yeast. "This may sound relatively straightforward: extrinsic variability is due to individual cells growing out of phase...

Rutgers researchers scientifically link dancing ability to mate quality

...r, from head-to-toe and arm-to-arm, to capture and measure detailed body movements. They fed data into programs that first created dancing animations of stick figures and then converted those animations into virtual human forms. ...

Scientists map one of biology's critical light-sensing structures

...redict where the light will come from each day and measure the length of daylight so that they flower in the correct season." By deducing the architecture of the phytochrome protein, according to Vierstra and Forest, it may be possible to engineer and introduce into crops phytochromes that respond to differe...

Researchers show how air pollution can cause heart disease

...he researchers then conducted an array of tests to measure whether the PM2.5 exposure had any impact on the m...because their arteries had become less elastic. To measure tension in the arteries, the researchers tested how the neurotransmitters serotonin and acetylcholin...

Looking for the genes that affect a person's level of response to alcohol

...e not yet alcohol dependent. The goal was to both measure their LR to alcohol and evaluate how their LR related to specific regions of chromosomes. LR was established through use of the Subjective High Assessment Scale as well as measurements of body sway. "We looked at almost everything a person could ...

New brain scan technology could save babies' lives

...he sources produce short flashes and the detectors measure the amount of light that reaches them through the brain and the time the light takes to travel. A software package also developed with EPSRC funding uses this information to build up a 3D image. This can show which parts of the brain are receiving ox...

Polio vaccination strategies assessed as eradication nears

...ing of virus after treatment with a dose of OPV to measure the immune response. Seventy-five percent of children receiving two doses of IPV, followed by one dose of OPV, shed OPV virus a week later, compared to 92 percent of those receiving just one dose of OPV. After three weeks, 81 percent of the children ...

Scientist uses form to explain function of key building blocks of life

...sts have developed an approach that allows them to measure with unprecedented accuracy the strengths of hydrogen bonds in a protein. The scientists were then able to predict the function of different versions of the protein based on structural information, a novel outcome that was published recently in the ...

Researchers make long DNA 'wires' for future medical and electronic devices

...ectrical and Computer Engineering at Ohio State to measure the electrical properties of the DNA wires. They are also using this technique to produce DNA-based nanoparticles for gene delivery. ...

New methods offer insight into regulatory DNA

...t are modified in some diseases. More difficult to measure and identify are the regulatory regions in DNA ?th...h colleagues in the USA and Switzerland, provide a measure of just how important regulatory region variation might be in a pilot study based on some 2% of the ...

Phenolic compounds may explain Mediterranean diet benefits

...re taken and the researchers used Doppler laser to measure endothelial responses to sudden changes in blood flow, which were produced by inflating and then deflating a blood pressure cuff. The response is known as ischemic reactive hyperemia. Poor responsiveness to this sort of blood flow test is considered ...

New technique helps researchers determine amino-acid charge

...Grosman said. "For the first time, we were able to measure proton-transfer events at the single-proton, single-amino-acid level, in real time. Chemists will be happy to see this." In addition to providing an extensive set of proton-affinity values for basic residues, which differed greatly from those found ...

Nano springs eternal; Protozoan 'engine' posts nano records

...nd colleagues used modern microscopes and tools to measure the force and speed of the spring. This is one powerful engine, France reports. The spasmoneme's contraction is measured in nano-newtons of force and centimeters/second of speed in a biological world where the ruler markings are usually in tiny pico-...

Are U.S. Flu Death Figures More PR Than Science?

...nd colleagues used modern microscopes and tools to measure the force and speed of the spring. This is one powerful engine, France reports. The spasmoneme's contraction is measured in nano-newtons of force and centimeters/second of speed in a biological world where the ruler markings are usually in tiny pico-...

Similar Stem Cells In Insect And Human Gut

...nd colleagues used modern microscopes and tools to measure the force and speed of the spring. This is one powerful engine, France reports. The spasmoneme's contraction is measured in nano-newtons of force and centimeters/second of speed in a biological world where the ruler markings are usually in tiny pico-...

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