variance

Implanted Devices Detect High-Risk Heart Failure Patients

...ave a narrow footprint that represents the reduced variance in heart rate response," Gilliam explained. "These footprints provide us with an unbiased ?distinct from the patient's perception ?look at how the patient is truly doing. It is an objective finding that you can look at and easily understand." Gillia...

Genetic variation alters response to common anti-clotting drug

... drug. "We found that 25 percent of the [overall] variance in warfarin dose is due to this one gene," said Rettie. "This is possibly the single biggest contributor to variability in people's responses to the drug and could be a central factor in setting the initial dose." The team also learned that certain ...

Genetic and environmental influences on alcohol consumption among rhesus monkeys

...ne's given alleles. For example, additive genetic variance accounts for the genetic component of resemblance ... of the total variation, leaving 20 percent of the variance attributable to 'residual environmental effects' not accounted for by the experimental treatments an...

Male circumcision overstated as prevention tool against AIDS

...longer statistically significant in explaining the variance in AIDS infection rates across the countries of the World. Second, to date, there has not been an adequate explanation as to why Africa as a continent is experiencing an AIDS epidemic far in excess of any other region of the world with some Africa...

variance at Biology Products

H2OBIT Thermal Cycler with Peel Seal Basket for 24 x 384-well plates from ABgene

... microprocessor controlled, ensuring a temperature variance of 0.2C. This provides excellent well-to-well and plate-to-plate uniformity to give identical and reproducible PCR reactions. The H2OBIT is operated by a computer management system, which allows full data tracking of all PCR runs and enables integrat...

H2OBIT Thermal Cycler with Universal Basket for 24 x 96-well plates from ABgene

... microprocessor controlled, ensuring a temperature variance of 0.2°C. This provides excellent well-to-well and plate-to-plate uniformity to give identical and reproducible PCR reactions. The H2OBIT™ is operated by a computer management system, which allows full data tracking of all PCR runs and ena...

H2OBIT Thermal Cycler with Universal Basket for 24 x 384-well plates from ABgene

... microprocessor controlled, ensuring a temperature variance of 0.2°C. This provides excellent well-to-well and plate-to-plate uniformity to give identical and reproducible PCR reactions. The H2OBIT™ is operated by a computer management system, which allows full data tracking of all PCR runs and ena...

variance at Biology Technology

Quantitative end-point RT-PCR gene expression measurement using the Agilent 2100 Bioanalyzer and standardized RT-PCR

...el electrophoresismethods. The mean coefficient of variance (CV) for thesethree methods was 0.26, 0.39 and 0.5...CVfor each method was so low. Ifthe coefficient of variance (CV)for each method (agarose gel,ABI Prism 310, Agilent 2100 bioanalyzer)had been at the averageleve...

Analysis of Microarray Data

...1.798e+308. Figure 6. An analysis of variance calculation of K-mean clusters 5 and 6. T....9999% cut-off value. Analysis of variance (ANOVA) of genes in clusters 5 and 6 indicated that the clusters contained genes that behave...

Automated RNA Amplification for Arrays

...eXP's BGA typically delivers coefficients of variance below 15% with sensitivity to 1 mRNA spike molecule in 250,000 human transcripts. A significant challenge to large scale expression analysis and profiling projects is sample preparation. For example, manual sample preparation ...

Matched siRNAs and Assays: Ambion + Applied Biosystems = RNAi Success

...re reproducible with less signal variance than Northern analysis. siRNA Validation Gene silencing experiments require siRNAs that efficiently knock down expression of the target gene. To prove that a particular siRNA sequence is effe...

High Throughput siRNA Electroporation

...d by a mean of 94.8% with a coefficient of variance of 18.9%. Variability is attributed to steps in the procedure such as pipetting error, measurement error, and assay error, as well as true biological variability. Figure 2. Reduction of GAPDH Gene Expression ...

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variance at Biology Definition

Chi-square test

...i-square tests; e.g., F -tests in the analysis of variance and t -tests are likelihood-ratio tests, but the test statistic does not have a chi-square distribution under the null hypothesis. Yates' chi-square test , or Yates' correction for continuity Mantel-Haenszel chi-square test linear-by-linear ...

variance at Biology Dictionary

Variation

...;>> Genetic variation -- a phenotypic variance of a trait in a population attributed to genetic heterogeneity. Full article >>> Biodiversity : The total variation in life, including the number of species , the degree of genetic variation within species , the different t...

Screening

... conditions. Genetic variation -- a phenotypic variance of a trait in a population attributed to genetic heterogeneity. Full article >>> Filamentous bacteriophages are used to produce single- strand ed DNA for sequencing or in vitro mutagenesis (eg. M13), and as vectors for ...

Quantitative trait

...Goldgar and Oniki, 1992) for partitioning genetic variance of quantitative trait s to specific chromosomal regions using data on nuclear families. Full article >>> quantitative trait A genetic trait that is determined by multiple interacting loci , and for which there is a range of phe...

Population

...;>> Genetic variation -- a phenotypic variance of a trait in a population attributed to genetic heterogeneity. Full article >>> Community : A group of population s of different species occupying a given place at a given time that are viewed as interdependent. An aggregatio...

Phenotypic variance

Phenotypic variance resulting from the presence of different genotyp... Full article >>> : The phenotypic variance in a population that is due to genetic heterogeneity. Genetics : Study of variation and here...

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variance at Medicine News

Balding gene may come from mother

...ition. Scientists have narrowed down this genetic variance to the gene for androgen receptor. One particular variety of this gene had been found more often in men who lose hair at a very early stage in life than in men who still sport a head full of hair at sixty. The gene for androgen receptor lies in the...

Bone Fractures In Elderly Can Be Genetical

...an 20 percent of the overall age-adjusted fracture variance was explained by genetic variation. Heritability was considerably greater for first hip fracture before the age of 69 years and between 69 and 79 years than for hip fractures after 79 years of age. Source: Newswise...

Memory-Aid To Help HIV Patients

...d more with Jerry, but there was not a significant variance from those without the device, according to the researchers. Source: Newsise...

It’s All With Psychological Approach – Research Fins

...k of injury. The author attributes this perceptual variance to our instinctive need to conserve energy and protect ourselves from harm. ‘The visually specified layout of the environment is modulated in perception in ways that promote effective, efficient, and safe behavior.’ Participants were asked to es...

Inaccurate Counts with Cheap Pedometers – Researcher Find

...ly 3 out of 4 pedometers studied measured a higher variance - researchers said. Report by the study authors, in the British Journal of Sports Medicine, says ‘inexpensive (pedometers) provide incorrect information on step counts, which makes them inappropriate for physical activity promotion targets’. ...

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variance at Medicine Products

Cellchek CC-7000 with Pachymeter

...ng results. They are, degree of polymegathism (The variance in sizes of the cells) and the degree of pleomorphism. (The percentages of cells selected that are six sided.) This information is much more informative than just "Cell Count. Once again the image and the results can be printed at this time or proces...

variance at Medicine Technology

Appendicitis: Evolving Tools to Diagnose a Classic Disease

... clinical presentation. This is due to well-known variance in history and physical exam. For example, the classic symptoms of abdominal pain, nausea, and loss of appetite have minimal if any predictive value for appendicitis versus other abdominal conditions. Clinicians fail to appreciate appendicitis on p...

Progenics Announces Positive Results in Clinical Trial of Novel HIV Therapy

...----------------* P values are from an analysis of variance model (ANOVA), pairwisetwo-sided t tests comparing each treatment group to placebo after theoverall F test was found to be statistically significant. Log10changes in HIV RNA are calculated relative to baseline. In this study, PRO 140 was generally w...

variance at Medicine Dictionary

Hypertrophy

...vention and can be reassured that this is a normal variance and requires no intervention. Full article >>> Alternate Names : Asymmetric Septal Hypertrophy (ASH), Cardiomyopathy - Hypertrophic (HCM), Idiopathic Hypertrophic Sub aortic Stenosis , IHSS See all Pictures & Images Diagnosi...