193 research outputs found

    Conduct Research on the Effect of Very Strong Fields and of Magnetic Field Free Environments on Man and Animals Progress Report, 1 Nov. 1965 - 31 Jan. 1966

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    Delayed sea urchin egg mitosis by high magnetic field - testing methods for magnetic field-free environmen

    Vectorcardiogram and aortic blood flow of squirrel monkeys /Saimiri sciureus/ in a strong superconductive electromagnet

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    Vectorcardiogram and aortic blood flow of squirrel monkeys in magnetic fiel

    Biotelemetry of the triaxial ballistocardiogram and electrocardiogram in a weightless environment

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    Biotelemetry of triaxial ballistocardiogram and electrocardiogram in weightless environmen

    Exposure of Escherichia coli to low-frequency vibrations

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    Low frequency mechanical vibration effects on biochemical mutant formation in E. col

    Growth of Staphylococcus aureus in a null magnetic field environment

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    Growth of Staphylococcus in magnetic field environmen

    Research on the effects of very strong magnetic fields and of magnetic field-free environments on man and animals Progress report, 1 Nov. 1968 - 31 Jan. 1969

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    Effects of strong magnetic fields and of magnetic field free environments on man and animal

    Exposure of man to low intensity magnetic fields in a coil system

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    Physiological and psychological effects of prolonged exposure to low intensity magnetic field

    The Electroencephalogram of the Squirrel Monkey /saimiri Sciureus/ in a Very High Magnetic Field

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    Electroencephalograms of squirrel monkey subjected to strong homogeneous and gradient magnetic field

    Increased incidence of glucose disorders during pregnancy is not explained by pre-pregnancy obesity in London, Canada

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    <p>Abstract</p> <p>Background</p> <p>The increasing incidence of impaired glucose tolerance (IGT), gestational diabetes (GDM) and type 2 diabetes (T2D) during pregnancy was hypothesized to be associated with increases in pre-pregnancy body mass index (BMI). The aims were to 1) determine the prevalence of IGT/GDM/T2 D over a 10 year period; 2) examine the relationship between maternal overweight/obesity and IGT/GDM/T2D; and 3) examine the extent to which maternal metabolic complications impact maternal and fetal pregnancy outcomes.</p> <p>Methods</p> <p>Data arose from a perinatal database which contains maternal characteristics and perinatal outcome for all singleton infants born in London, Canada between January 1, 2000 and December 31, 2009. Univariable and multivariable odds ratios (OR) were estimated using logistic regression with IGT/GDM/T2 D being the outcome of interest.</p> <p>Results</p> <p>A total of 36,597 women were included in the analyses. Population incidence of IGT, GDM and T2 D rose from 0.7%, 2.9% and 0.5% in 2000 to 1.2%, 4.2% and 0.9% in 2009. The univariable OR for IGT, GDM and T2 D were 1.65, 1.52 and 2.06, respectively, over the ten year period. After controlling for maternal age, parity and pre-pregnancy BMI the OR did not decrease. Although there was a positive relationship between pre-pregnancy BMI and prevalence of IGT/GDM/T2 D, this did not explain the time trends in the latter. Diagnosis of IGT/GDM/T2 D increased the risk of having an Apgar score <7 at 5 minutes, which was partially explained by gestational hypertension, high placental ratio, gestational age and large for gestational age babies.</p> <p>Conclusions</p> <p>We found a significant increase in the incidence of IGT/GDM/T2 D for the decade between 2000-2009 which was not explained by rising prevalence of maternal overweight/obesity.</p

    Gross intestinal morphometry and allometry in primates

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    Although it is generally assumed that among mammals and within mammal groups, those species that rely on diets consisting of greater amounts of plant fiber have larger gastrointestinal tracts (GIT), statistical evidence for this simple claim is largely lacking. We compiled a dataset on the length of the small intestine, caecum, and colon in 42 strepsirrhine, platyrrhine, and catarrhine primate species, using specimens with known body mass (BM). We tested the scaling of intestine length with BM, and whether dietary proxies (percentage of leaves and a diet quality index) were significant covariates in these scaling relationships, using two sets of models: one that did not account for the phylogenetic structure of the data, and one that did. Intestine length mainly scaled geometrically at exponents that included 0.33 in the confidence interval; Strepsirrhini exhibited particularly long caeca, while those of Catarrhini were comparatively short. Diet proxies were only significant for the colon and the total large intestine (but not for the small intestine or the caecum), and only in conventional statistics (but not when accounting for phylogeny), indicating the pattern occurred across but not within clades. Compared to terrestrial Carnivora, primates have similar small intestine lengths, but longer large intestines. The data on intestine lengths presented here corroborate recent results on GIT complexity, suggesting that diet, as currently described, does not exhaustively explain GIT anatomy within primate clades
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