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研究某些子群同构的有限p-群是很有趣的.例如,Hermann和Mann都曾研究过极大子群都同构的有限p-群,但这类群的结构非常复杂,到现在人们都没能给出其分类.研究了特定阶的子群都同构且交换的有限p-群,并给出其分类. 相似文献
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Y(NO_3)_3·3H_2O-18C6-CH_3CN三元体系溶解度的研究 总被引:3,自引:0,他引:3
用半微量相平衡法研究了 Y(NO_3)_3-3H_2O-18C_6-CH_3CN 三元体系在25℃的溶解度。溶解度曲线由两支组成:一支极短,与冠醚18C6的固相相对应;较长的一支与络合物Y(NO_3)_3·18C6·3H_2O 的固相相对应。饱和溶液的折光率曲线也由两支组成,与溶解度曲线相对应。在平衡过程的液相和固相中水和硝酸钇的摩尔比皆是3:1。对制得的固态络合物Y(NO_3)-3 18C6-3H_2O进行了化学和红外光谱分析。络合物的差热-热重行为表明,Y(NO_3)_3·18C6·H_2O 在72℃开始脱水,在148℃转变为4:3的络合物。 相似文献
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SUBCELLULAR SITE OF ANTISPERMATOGENIC EFFECT OF GOSSYPOL AND ITS POSSIBLE MOLECULAR MECHANISM OF ACTION 总被引:1,自引:0,他引:1
This paper reports the results of gossypol effects on the testicular mitochondrial ultrastructures and functions. A hypothesis of mechanism of gossypol action based on our experimental data was postulated.Electron microscopic observations confirmed further our previous studies that the mitoehondria of the target germ cells were the most sensitive and the most severely damaged among cellular organelles in response to gossypol. The damages included the swelling, vacuolation, crista depletion, lysis, granular accumulation in matrix and the process of intact mitochondria disintegration. The activity of the mitochondrial marker enzyme, the LDH-X of human spermatozoa, was markedly decreased or suppressed completely after gossypol treatment.The functions of isolated testieular mitochondria determined by Warburg manometric and oxygen electrode polarographic methods indicated that gossypol stimulated respiration but inhibited slightly the oxidative phosphorylation at low concentrations (20-40μM) in vitro. With 相似文献
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称有限 p 群 G 为ACT 群,如果对每个交换子群H, 其正规核 HG=1 或 HG=H. 又称p 群 G是CC 群,如果对每个非正规交换子群H, 有 HG=1 或 HG 在G中的指数为 p. 本文分类了ACT 群和CC 群. 相似文献
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设H是有限群G的子群, K/L是G的任一非Frattini主因子.如果对每一满足L≤A<B≤K且A是B的极大子群的子群对(A,B),都有HA=HB或者H∩A=H∩B,则称H是G的∑*-嵌入子群.通过有限群G的某些子群的∑*-嵌入性,给出了一些有限群G的正规子群为可解群的一些判别条件,推广了已有的一些结论. 相似文献
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有限群为超可解群的充要条件 总被引:1,自引:0,他引:1
用置换条件刻画有限可解群的超可解性已有大量结果,本文的目的是给出另外一些有限可解群为超可解的充要条件。其主要结果是: 1.设G是满足置换条件的有限可解群,则G是超可解群当且仅当如下条件之一成立。 1)G的2-Sylow子群G_2的换位子群G_2′G. 2)G有正规2-补。 2.设G是有限可解群,则G超可解当且仅当G和G′均满足置换条件. 相似文献
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A subgroup H of a finite group G is said to be CAP-embedded subgroup of G if, for each prime p dividing the order of H, there exists a CAP-subgroup K of G such that a Sylow p-subgroup of H is also a Sylow p-subgroup of K. In this paper some new results are obtained based on the assumption that some subgroups of prime power order have the CAP-embedded property in the group. 相似文献