Tag: "sample" at biology news
Birth factors associated with risk for autism
...that previous autism studies used relatively small sample
sizes, but that Denmark's extensive database for tracking the health of residents makes large population studies easier to complete. Perinatal risk factors, such as mode of delivery, fetal presentation, preeclampsia and number of antenatal visits, we...
Genetic factors partly influence differences in language development
...), a longitudinal study involving a representative sample
of all twins born in England and Wales in 1994, 1995 and 1996. It is the largest twin study to investigate diverse aspects of language, including articulation, phonology, grammar, vocabulary and verbal memory in a group of children of the same age. O...
Dye to pinpoint diseases and pathogens
...vides the basis for a re-usable, quick and compact sample
testing system. "The idea here is to have something like a thermometer that will monitor the environment and the body," he says. "But instead of temperature, you are monitoring for DNA fragments indicative of problems that can cause disease and infec...
New kidney test better elder mortality predictor
...zen samples, the researchers confirmed that a test sample
showed no change in values measured over a course of five cycles of freezing and thawing. In future research, Shlipak would like to conduct a clinical trial to determine if cystatin C is truly effective as a diagnostic tool. "We need to prove that be...
Rock on! Indiana limestone: NIST's first and latest SRM
...est Standard Reference Materials (SRMs), a mineral sample
first distributed in 1910. Issue "d" of SRM 1 consists of a 70-gram sample
of argillaceous ("containing clay") limestone quarried in Putnam County, Ind. NIST certifies each sa...
Road salt affects mitigation wetlands
... sediment mud." The researcher would also like to sample
the soil where the runoff eventually leaves the wetland to see if salt is building up there....
Study finds research participants concerned about genetic discrimination
...they said. The research team noted, however, "The sample
was composed of people who had already agreed to participate in a genetic testing study, so we might expect their views to be biased in favor of genetic testing." The researchers did find lower concern among participants over 65, and among the Canad...
New data demonstrate that Benicar and Benicar HCT significantly reduces systolic hypertension
...n trial conducted in the United States. The study sample
consisted of 176 patients with a mean age of 60 ye... 1 and Stage 2 patients to JNC 7 goals. The study sample
consisted of 79 patients with Stage 1 hypertension and 100 patients with Stage 2; all were at least ...
Small species back-up giant marsupial climate change extinction claim
...tablished. Closer examination revealed a bias in sample
collection in favour of larger animals and there had been few attempts to document ecological and sediment data. "Our samples show that species dependent on habitats such as woodlands and vine thickets dominate the lowest section of the trench, whic...
Super predators and mass extinctions; extreme NMR; and the world's smallest solenoids
...asure the magnetic fields around living creatures, sample
the Earth's magnetic field, or test the composition of mineral oils in wells. The key to the advance is developing an NMR system that makes use of the relatively weak magnetic field of the Earth, rather than fields from manmade magnets. NMR spectrosc...
DOE JGI sequences DNA from extinct cave bear
... out that about 6 percent of the sequence from the sample
yielded cave bear sequence -- the rest represented...of 21 genes, identified by comparing the cave bear sample
to the complete dog genome sequence that exists in the public databases. Dogs and bears, which diver...
Georgia Tech develops mass spectrometry device that analyzes proteins faster and at a lower cost
...ntly available electrospray methods. In AMUSE, the sample
aerosolization and protein charging processes are ...ale ion source and drastically lowers the required sample
size by improving sample
use. Also important, AMUSE is a "high-throughput" microarray device, meani...
Quantum dots provide a faster, more sensitive method for detecting respiratory viral infections
...he "gold standard" involves incubating an infected sample
in a tissue culture for five days and then using a fluorescent dye to test for the presence of the virus. The main problem with this technique is that the virus is multiplying in the patient at the same time as it is growing in the culture. This has ...
Engineered skin offers clues to melanoma development
... the cells that give skin its structure, to form a sample
of human skin that was grafted onto laboratory mice. The mice were observed for up to six months and sacrificed at different time points to examine the skin grafts for signs of melanoma and to determine whether the cancer had metastasized. The resear...
Tagging pathogens with synthetic DNA 'barcodes'
...al beads. Another is by dot blotting, in which the sample
is spread on a sheet of absorbent paper and made v...n system does not require complex preparation of a sample
and can be applied to living cells. The technology could be used in genomic research, clinical diagn...
New genetic test may detect risk of rare complication from anesthesia
...a newly offered genetic test requires only a blood sample
from a patient suspected to be at risk for MH. The test detects 25 to 50 percent of the mutations known to make one susceptible to the condition. If physicians know that a patient has this genetic susceptibility, they can substitute other anesthesia ...
Holographic movies show promise for medical, military applications
.... Garner's Web site contains technical details and sample
holographic movies, at http://innovation.swmed.edu/research/instrumentation/res_inst_dev3d.html The heart of the holographic system is the digital light processing micro-mirror chip, made by Texas Instruments and currently used in television, video ...
Other highlights in the June 15 JNCI
...ictive models have poor performance with the small sample
sizes of patients and the informative genes currently available. In an editorial, Richard Simon, D.Sc., of the National Cancer Institute, provides possible explanations for the inconsistencies in the results of the two studies and makes recommendatio...
Fossil Patagonian plants show high insect feeding diversity 52 million years ago
...ethods to eliminate any possible bias from unequal sample
sizes. "We used identical collection methods for ... and distance from the coast. After adjusting for sample
size, the Republic site also is the most diverse in plant species of the North American sites and ha...
'Biosensor' screens Air Force personnel and equipment
...sprays the suspected contaminated area, creating a sample
that can be picked up by a swab. The sample
material on the swab is suspended in liquid by rinsing it in a container. Once in a liquid form, the...
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