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根据改良的对应状态原理,建立了一个新的液体热压力系数计算公式,可适用于从三相点到临界点的宽阔温度范围。式中只有一个仅与分子大小有关的特性参数,该参数与正常沸点下液体摩尔体积有很好的线性关系。对42种液体热压力系数预测结果表明,计算值与实验值的平均相对误差约为±1.7%。 相似文献
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《Canadian Medical Association journal》1967,97(23):1416-1417
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《Canadian Medical Association journal》1963,88(23):1172-1173
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《Canadian Medical Association journal》1962,86(15):701-702
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The pattern of arthritis in Roman Britain was investigated by examining the skeletons of 416 adults from the Roman cemetery at Poundbury Camp near Dorchester, Dorset. The mean height of the people was not much less than that of the current British population, and the prevalence of right handedness was similar to our own. There was a high prevalence of osteoarthritis for such a relatively young community, with particularly severe changes in the vertebral column. The pattern of joints affected by osteoarthritis was different from that seen now, but the prevalence of vertebral ankylosing hyperostosis was much the same. Rheumatoid arthritis was seen as often as the expected rat would indicate, given that the population died young, but it was rare. Other forms of arthritis, including gout and ankylosing spondylitis, were not seen. 相似文献
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First multiresistant pneumococcus in Britain 总被引:1,自引:0,他引:1