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Tag: "measuring" at biology news

Technology for monitoring fetal oxygen during labor offers no apparent benefit

A new technology for measuring blood oxygen levels of a baby during labor--expected to provide information useful for preventing birth complications--offers no apparent benefit, report researchers in a National Institutes of Health research network. The technology, known as fetal...

Pleasure and pain: Study shows brain's 'pleasure chemical' is involved in response to pain too

...ers to calculate the level of dopamine activity by measuring the percentage of dopamine receptors on the surface of brain cells that were active. To do this, they used the drug raclopride, to which had been attached a short-lived radioactive form of carbon. The drug binds to the same receptors that dopamine do...

Scientists discover role for dueling RNAs

... "For years scientists have evaluated genomes by measuring the sense RNA, with antisense transcripts thought to have no meaning at all," says Fink. "Here we've found a process in which antisense RNA regulates sense RNA. This same process may occur in the sex cells of mammals. In fact, considering how widespr...

Brain regions do not communicate efficiently in adults with autism

... tomography, both of which gauge brain activity by measuring blood flow. Post-mortem studies also suggest impairments in communication at the level of individual brain cells. This over and under abundance of neural connections suggests inefficient and inconsistent communication inside the brains of peopl...

Slow brain waves play key role in coordinating complex activity

...ea how information moves between these areas." By measuring electrical activity in the brains of pre-surgical ...t apparent by any current means of detection. "By measuring high-gamma band activity, we will be able to see in real time, during surgery, how cortical regions ...

Nerve cell software keeps track of brain change

...y Australia's CSIRO, for automatically tracing and measuring lines in complex images. With up to 40,000 delegates expected, the conference will be an ideal focus for the software's international launch. Dr Pascal Vallotton, Leader of Biotech Imaging at CSIRO Mathematical and Information Sciences, says the...

Chemical tests of cell growth enter third dimension

...esearchers have developed two new technologies for measuring cell growth in the laboratory. The first patent-pending technology provides a way for researchers to easily tell if cancer cells in the laboratory are responding to an anti-cancer drug. The second -- because it tests several sets of cells at once --...

Spelling out cancer on the nanoscale

...-fluidic system was also tested on human tumors by measuring the levels of MYC, BCL2, ERK, and AKT proteins in the lymph nodes obtained from patients with Burkitt’s, mantle cell, or follicular lymphoma. The nano-fluidic system reported that MYC was overexpressed in Burkitt’s, while BCL2 was overexpressed in ma...

Researchers discover mechanism that determines when detailed memories are retained

...ow well they remembered the various frequencies by measuring changes in their respiration rates. The results showed that a weak activation of the nucleus basalis, which resulted in a small amount of acetylcholine being released, did lead the rats to remember the tones but not specific frequencies. However, ...

New tool helps blood specialists improve patient care

...n Practice, which is developing new parameters for measuring performance on the treatment of several blood disorders and cancers. "Participants will be making real-time changes to the way they care for patients. The importance of this experience is invaluable, not only to the physician, but to the patient as w...

Silver bullet: UGA researchers use laser, nanotechnology to rapidly detect viruses

...rface enhanced Raman spectroscopy (SERS), works by measuring the change in frequency of a near-infrared laser as it scatters off viral DNA or RNA. This change in frequency, named the Raman shift for the scientist who discovered it in 1928, is as distinct as a fingerprint. This phenomenon is well known, but ...

Climate change creates dramatic decline in red-winged black bird population

... than expected, but it did go up. We are currently measuring the length of the breeding season to see if that has changed, affecting the sex ratio as well." ...

A new target for painkillers

... the other. Each rat's sensitivity was assessed by measuring how much pressure could be applied to a hind paw with a blunt Teflon tip before the rat pulled away the paw. Normal rats could withstand 4.7 times more pressure before withdrawing their paws, compared with rats with sciatica. When cone snail toxin...

End of deforestation in view? Experts advance new way to size up global forest resources

...archers advancing a more sophisticated approach to measuring forest cover. The novel approach looks beyond sim...ow collectively demonstrated it. The new way of measuring forests reflects the comprehensiveness of new FAO studies, a new consistency of measurement protocol...

Siberian lakes burp 'time-bomb' greenhouse gas

...ts Walter and colleagues developed a new method of measuring ebullition (bubbling) point sources and used it to quantify methane emissions from two thaw lakes in North Siberia. As they walked across the frozen lakes they mapped locations and types of discrete methane bubbling trapped in the ice. By placing b...

Newly identified biomarker detects and regulates spread of brain tumors

...tion, says Dr. Van Meir. "Our studies suggest that measuring attractin levels in patients with grades II-IV astrocytoma should be explored further as a potential biomarker for monitoring the growth of these tumors or as a potential new target for therapy." ...

New technique boosts size of proteins that can be analyzed

...nce. "Mass spectrometry characterizes a protein by measuring the masses produced from it." The new technique provides a far more efficient way to break down proteins inside the mass spectrometer -- sprayed, heated and then bashed with gas molecules -- to obtain their pieces for the mass analysis. They are sp...

Learning during sleep?

...ach especially for this purpose. They succeeded in measuring the membrane potential of individual interneurones (neurones that suppress the activity of the hippocampus) in anaethetised mice. At the same time, they recorded the field potential of thousands of nerve cells in the cerebral cortex. This allowed the...

Tarantula venom and chili peppers target same pain sensor

...he venom peptides' effect in neuron cell cultures, measuring the tell-tale rush of calcium ions when the venom peptides contacted the TRPV1 capsaicin receptor. They also showed that synthetic versions of the venom peptides activated the receptor. In studies with mice, they found that normal animals flinched wh...

Weighty viruses

... trapped particle. The rest of the light goes to a measuring device that precisely analyzes the scattering signal. The scattered light is different from the initial light beam because the virus particle in the electric field of the ion trap begins to oscillate. This oscillation depends on the mass (and charge)...

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