Tag: "scan" at biology news

Discovery of size changes of Bacillus spores may lead to simpler, faster anthrax detector

... turnaround time would be 12-24 hours. A device to scan for Bacillus spores of a certain size and swelling time could provide an answer in about 10 minutes. "This wouldn't be a foolproof way of saying, "You've got anthrax spores,'" added Price, "but it would be a flag for you to go to the next step, perha...

Braille found to be essential, regardless of age of blindness

...al imaging, or inadequate performance on post-fMRI scan recall testing. Early blind subjects had no sight at birth or by age three. The average age at onset of blindness in the late blind group was age 19.2 (range, seven to 36). All blind subjects, but no sighted subjects, were fluent Braille readers. A...

Study of living eye in real time now possible with optics technology

... would like to treat. "The way we use our laser to scan the retina to produce an image, it may be possible to use the technique for treatment. While you're imaging a microaneurysm, for example, if we could track that feature we may be able to then turn on a treatment laser and blast it with the same preci...

Technological advances making life easier for people with physical and mental challenges

...g in a library pushes a big red button in order to scan bar codes on books and student ID cards so children can check books. While these technological devices promote useful job skills, there may be also a non-intrinsic value to these devices: "The students in the elementary school are seeing her perfor...

New strategies against disease revealed as scientists probe genes' tasks

...up with their complementary strands on the chip. A scan of all the zipped genes on the chip then reveals which genes were active in the sample, and the degree of their activity. Using this technology, Jonathan Pevsner of the Kennedy Krieger Institute and the Johns Hopkins School of Medicine has identified...

Diamond film may enable critical new sensors for bioterror

... inexpensive, compact sensor that can continuously scan airports, subways and battlefields for the slighte...gy that permits scientists to, among other things, scan biological molecules to assess gene activity. Current technology relies on expensive chips that are ...

$2.48 million to advance research on multiple sclerosis

...rnia at San Francisco), who pioneered an MS genome scan study and an MS DNA Bank. They are using a new approach called haplotype mapping to search for genes that make people susceptible to developing MS, and are fusing information on genetics, clinical aspects of disease and profiles of immune activity. ...

Location of ulcerations in diabetic patients may be explained by blood flow

...ace of the foot was recorded using a laser beam to scan the subjects they were lying prone. Scores measured highest skin perfusion to the lowest; plantar pressures scaled from highest to no pressure. Results In the absence of compression (subjects lying prone on a bed) images showed maximal estimated...

UNC scientists find important new clue to puzzle of addictive behavior

...ioneered an electrochemistry technique called fast scan cyclic voltammetry technique that now allows the team to measure dopamine levels in the rats instantaneously some 200 times faster than has ever been done before. "We were among the first groups to fabricate the carbon-fiber electrodes, the first re...

Engineers design new optical microprobe to detect subsurface organ abnormalities

...pecial kind of quasi-laser light that can not only scan internal organ surfaces but also penetrate just be...mined the lining of an excised pig colon. A second scan probed the cornea and iris of an excised pig's eye. A third imaged the underside of a human fingerti...

Heinz Maier-Leibnitz Awards 2003

... the development of special modelling methods that scan the objects geometrically with the aid of triangulation or point clouds and can hence reveal information on the form of the target object. Thus morphing is among the most important research fields in computer animation and bears a considerable potent...

GenoMyc binding

... Amati and colleagues used bioinformatics tools to scan the human genome and identify genes containing one or more E-boxes in the proximity of their promoter (the portion of the gene where transcription begins). Of the 1630 gene loci identified, approximately 700 underwent further biochemical characteriza...

Imaging technique may help in confirming, monitoring treatment of malignant brain tumors

...om a sample with known sodium content. The special scan method the researchers use for three-dimensional sodium MRI makes it possible to directly calculate sodium concentrations. The researchers found sodium concentrations in cancer cells were elevated by an average of 50 percent compared to the other no...

Genetic reconnaissance identifies new colon cancer genes

... of the human genome sequence allows scientists to scan sequences to identify kinases, and the increased speed with which DNA can be sequenced enables us to rapidly search for mutations in those kinases in human cancers," said Markowitz. In beginning their survey of the kinome for kinases activated in col...

Automated imaging of brain tissue, high-quality glimpses inside arteries

...ges at 15 frames per second over a relatively wide scan diameter (7mm). Owing a debt to pioneering basic a...ses. It will also aid forensic scientists who must scan large samples for specific genetic material - the biological equivalent to finding a genetic needle ...

3-D imaging inside living organism, using quantum dots

...hey made a calculation. Noting the time it took to scan that part of the tiny blood vessel and the animal's heart rate during the experiment, they determined that each ripple represented the undulation of the capillary wall from one heartbeat. Besides demonstrating the feasibility of microscopic angiograp...

The Plasti-Bone

...m is injured and damaged, ACR has shown that a cat scan or MRI image can be made of the good arm bone, and converted to a "growth code" a 3-D virtual image of the replacement bone segment needed. Using that data, ACR's rapid prototyping technology then creates a micro-porous calcium phosphate coated pol...

Remote sub can patrol Shores. Sound Fishy? It is, but not like you think.

...ifferent fish species were compiled using the side scan sonar data. This information was then grouped into test sets used for training artificial neural networks (ANNs). The team combined the use of enhancement algorithms and image processing, in conjunction with the ANNs, to "teach" the computer to recog...

Finding dirty bombs and other radiation threats

...ices, ranging from 3-meter-high portal towers that scan truck trailers while they move through checkpoints to small, pager-size monitors that serve as personal dosimeters. Many of these devices originally were designed for monitoring workers in factories and laboratories. The new standards under developme...

Pinpointing viruses in body scans

...des - could help doctors improve treatments. And a scan could reveal whether viruses used in gene therapy to ferry new DNA into patients have actually reached the parts of the body they are intended for- and in sufficient numbers to do any good (Journal of the American Chemical Society, DOI: 10.1021/ ja03...

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