28 research outputs found

    The interdependence of external signs of connective tissue dysplasia and the formation of the female pelvis.

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    45 students of the Ural State Medical University were researched. The correlation of anthropometric indices and external signs of connective tissue dysplasia with the size of the female pelvis is estimated. They revealed smaller pelviometric indices for girls with low height, weight, length of hand and foot, and signs of joint hypermobility.Проведено исследование 45 студенток Уральского государственного медицинского университета. Оценена корреляция антропометрических показателей и внешних признаков дисплазии соединительной ткани с размерами женского таза. Выявили меньшие пельвиометрические показатели у девушек с низким ростом, весом, длиной кисти и стопы, признаками гипермобильности суставов

    The interdependence of external signs of connective tissue dysplasia and the formation of the female pelvis

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    45 students of the Ural State Medical University were researched. The correlation of anthropometric indices and external signs of connective tissue dysplasia with the size of the female pelvis is estimated. They revealed smaller pelviometric indices for girls with low height, weight, length of hand and foot, and signs of joint hypermobility.В статье рассмотрены вопросы касательно показаний к назначению гестагенов во время беременности. Проведено когортное поперечное исследование, включившее 128 беременных женщин, взятых методом сплошной выборки, на разных сроках гестации, среди которых выделена группа пациенток, получавших гестагенную поддержку. Определена частота назначения гестагенов и структура показаний к их применению во время беременности

    BIOLEACHING OF COBALT AND ZINC FROM PYRITE ORE IN RELATION TO CALCITIC GANGUE CONTENT

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    Bioleaching of a pyrite ore containing high concentrations of cobalt (0.1%) and zinc (0.065%) was affected by small amounts of calcitic gangue (from 0.01 to 1.01%). Results from an air-lift percolator and from Erlenmeyer flask experiments show that a small percentage of calcite raises the pH and arrests the growth of the acidophilic bacterium Thiobacillus ferrooxidans. In percolator experiments, when calcite is completely removed by the continuous addition of small quantities of acid, and the pH of the liquor becomes acid, the micro-organism begins to grow and to bio-oxidize the pyrite ore. The growth of T. ferrooxidans shows different lag phase spans (from 13 to 190 days) depending on carbonate dissolution. The metals Fe, Zn and Co are released into the leaching solution together at different rates after a lag-time which depends on calcite concentrations in pyrite gangue. Metal ratios in the mineral bulk are different from those in the liquor, Zn dissolving 5 times more readily than Co. Bioleaching rates for metal removal from pyrite are higher in percolator (for Fe, from 5 to 15 mg/l/h) than in flask experiments (from 0.5 to 2 mg/l/h), but the lag phases are shorter (from 2 to 65 days). The differences between the two systems are related to calcite dissolution and gypsum precipitation
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