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Tag: "measure" at biology news

Nanowire arrays can detect signals along individual neurons

... of times smaller than the electronics now used to measure brain activity. Lieber's group has previously sh...er in length -- Lieber and colleagues were able to measure and manipulate electrical conductance at as many as 50 locations along a single axon. The current ...

How plants avoid feeling the burn

...isher and other ASU scientists have found a way to measure for the first time the electrical conductance with... Engineering. In concept, it's much like trying to measure the current of a wire found in an everyday household appliance, only in this case, the "wiring" is a...

Robotic joystick reveals how brain controls movement

...-controlled joystick used in these experiments can measure precisely how hard and in what direction it's being pushed by the hand holding it. Using computer programs, the researchers then were able to apply mathematical equations to these measurements and calculate predictions of how the brain might be "lear...

New approach to vaccine development provides potent, long-lasting immunity

...-controlled joystick used in these experiments can measure precisely how hard and in what direction it's being pushed by the hand holding it. Using computer programs, the researchers then were able to apply mathematical equations to these measurements and calculate predictions of how the brain might be "lear...

Rehydrate -- your RNA needs it

...ch allowed the researchers to directly observe and measure how quickly the ribozyme switched forms and how the rates changed when various parts of the molecule were altered. The situation in ribozymes contrasts with what happens in protein enzymes, which repel water from their cores and rely on direct cont...

Magnetism and mimicry of nature hold hope for better medicine, environmental safety

...nd Hayes is applying optical strategies to rapidly measure amounts of significant biochemicals and proteins. The measurement of dopamine and other biological indicators of stress and acute indicators of heart attacks are of particular interest to medical research. ...

'Signature' of chromosome instability predicts cancer outcomes

...igator. "We have achieved a relatively easy way to measure the level of chromosomal instability in a given tumor sample." The technique may help in the search for cancer drugs that reduce chromosomal instability -- an approach of increasing interest to researchers -- by making it possible to screen a large...

How HIV 'exhausts' killer T cells

...hat even in late-stage illness, when one can still measure great numbers of these immune cells, they don't seem to be controlling the virus at all." An important clue to why killer T cells stop functioning after infection came from earlier studies in mice, which were published by co-author Rafi Ahmed o...

A new tool against brain disease

...hat even in late-stage illness, when one can still measure great numbers of these immune cells, they don't seem to be controlling the virus at all." An important clue to why killer T cells stop functioning after infection came from earlier studies in mice, which were published by co-author Rafi Ahmed o...

Survivors of childhood polio do well decades later as they age

...ents feel their weakness progressing, but when you measure it, it's very modest," he says. "Likely, they lost so much strength at the time of their illness that any change is very noticeable to them. Though the likelihood is high that patients who have had childhood polio will complain of weakness later in l...

Research highlights how bacteria produce energy

...e in oil production after our test, but we need to measure oil production more precisely to be certain," says McInerney. ...

New GI technologies improve internal organ visualization

...d from the sedation device to a laptop computer to measure patient response throughout the procedure and adjust the sedation dosage accordingly. Patient responsiveness was monitored by the anesthesiologist using the Modified Observer's Assessment of Alertness/Sedation (MOAA/S) scale and the Automated Respon...

Tiny airborne particles are a major cause of climate change

..., he used a network of ground sensors (AERONET) to measure the effect of aerosol concentration on cloud cover. Radiation absorption is less affected by meteorology, so if the skeptics are right and meteorology is the main influence, then the correlation between aerosol absorption and cloud cover should have ...

Smooth sailing: 'cruise ship virus' tackled by UH, Baylor College of Medicine

...chhoeft, however, will create retroreflectors that measure just a few micrometers wide. Three sides of the reflectors will be covered with reflective material and will be populated with the Norwalk antibody. These retroreflectors will be dispensed onto the slide. If Norwalk is present on the slide from...

Recombination protein dynamics observed with single monomer resolution

...n the distance between them. The researchers then measure the brightness of the two dyes simultaneously. The changing ratio of the two intensities indicates the relative movement of the two dyes, and therefore the motion of the molecule or its change in size. The technique revealed intricate details of how...

Ready, set, mutate?and may the best microbe win

...gion of the genome for each new strain in order to measure evolutionary progress. The researchers sampled the fermentor for new strains every other day. Though millions of mutations in the target gene are believed to have occurred, only about 700 of those were capable of creating a new variant of the target...

Blood test predicts success of quitting smoking using the nicotine patch

...gy and Therapeutics. The blood test, which is a measure of the rate at which nicotine is metabolized, may eventually be performed non-invasively using saliva or urine samples. "The ultimate aim here is to distinguish smokers who are likely to benefit from a standard dose of nicotine patch from those who m...

The brain's executive is an 'event planner'

...itted monkeys with recording electrodes that could measure activity in the region's neurons. They then taught the monkeys to perform a complex task in which the animals were required to manipulate joysticks to move a cursor on a computer screen from a starting point to a goal. Importantly, the researchers r...

Himalayan forests disappearing

...itted monkeys with recording electrodes that could measure activity in the region's neurons. They then taught the monkeys to perform a complex task in which the animals were required to manipulate joysticks to move a cursor on a computer screen from a starting point to a goal. Importantly, the researchers r...

Genetic snooze button governs timing of spring flowers

... In the case of biennials, "the plants can somehow measure how much cold they've been exposed to, and then they can flower rapidly in the spring niche." Exposure to the cold triggers a process in plants known as vernalization, where the meristem - a region on the growing point of a plant where rapidly divi...

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