共查询到10条相似文献,搜索用时 78 毫秒
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B W Kennedy 《Journal of dairy science》1991,74(11):4067-4081
Ideas and methods developed by Henderson have been applied widely to BLUP of additive genetic merit of animals and estimation of components of variance. However, a number of other contributions of Henderson to theory and application of animal breeding and statistics have not been as fully examined and exploited. Some of these contributions are complete in their own right and others lay the groundwork to help resolve remaining problems. Henderson had insight and made contributions to the areas of analysis of line and breed cross data, hypothesis testing under mixed linear models, prediction of breeding values with unknown variances, and selection models. The general flexibility of Henderson's mixed model methods to quantify a large variety of biological effects is also illustrated and discussed in light of new technologies in genetics and biology. 相似文献
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A E Freeman 《Journal of dairy science》1991,74(11):4045-4051
Through C. R. Henderson's position and the application of his knowledge, he had a major influence on genetic improvement in dairy cattle beginning in the 1950s. He developed herdmate comparisons in the United States. The first extensive program using pedigree selection and progeny testing of sires for use in AI was because of his suggestion. This program established the direction of dairy cattle improvement that still continues. He developed BLUP and discovered how to write the inverse of an additive genetic relationship matrix, A-1, without inverting the matrix. These accomplishments had a major impact on evaluation methods of dairy cattle and other livestock species. Use of BLUP and A-1 are standards for evaluation of breeding values all over the world. His pioneering work in estimation of components of variance and analyses of unbalanced data were also of primary importance for animal evaluation and many other applications. Henderson made a major contribution to mankind. 相似文献
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Six proteolytic fractions of the soyabean differed in specificity on synthetic substrates. Their Michaelis constants on poly (L-glutamic acid) differed one from the other. The optimum pH values of proteolytic action were slightly lower than that of the crude extract. The fractions did not autolyse, nor did one fraction hydrolyse any other. Finally, none of the fractions exhibited trypsin-like activity, as characterised by ability to hydrolyse benzoylarginine ethyl ester, either at their optimum pH or at the pH optimum of trypsin. 相似文献
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K H Park R Duden A Fricker 《Zeitschrift für Lebensmittel-Untersuchung und -Forschung》1975,157(6):327-331
Optimal conditions for a modified hydroxymic acid method have been worked out with respect to the stability of the substrate emulsion; by systematically varying the ratios of the components of the solutions it was possible to develop a homogeneous reaction system which could be directly measured by spectrophotometry. 相似文献
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亓桂梅 《中外葡萄与葡萄酒》2007,(6):71-71
据OIV预计,世界葡萄酒消费量正缓慢增长,2005—2010年将上升8%。
但这种增长各地市场表现不一,葡萄酒品种间的增长也有差异。高端葡萄酒市场增长的较快,并且以卢森堡的人均消费增长的最快,美国市场也对这个增长起了很大作用。 相似文献
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Brady S Lafferty L Bailey M McCoy E Keaton E Leverenz R Edmundson W Palisi S Flik R Brown K 《Food management》1995,30(9):60-1, 64-5, 68 passim
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