根田鼠肾上腺皮质酮水平的日节律及急性低氧的影响

根田鼠肾上腺皮质酮水平的日节律及急性低氧的影响ＴＨＥＣＩＲＣＡＤＩＡＮＲＨＹＴＨＭＯＦＣＯＲＴＩＣＯＳＴＥＲＯＮＥＬＥＶＥＬＡＮＤＥＦＦＥＣＴＯＦＨＹＰＯＸＩＡＯＮＲＯＯＴＶＯＬＥ（ＭＩＣＲＯＴＵＳＯＥＣＯＮＯＭＵＳ）根田鼠（Ｍｉｃｒｏｔｕｓｏｅｃ...     

不同株的熊蜂短膜虫与宿主生存的关系

ＴＨＥＲＥＬＡＴＩＯＮＳＨＩＰＢＥＴＷＥＥＮＤＩＦＦＥＲＥＮＴＳＴＲＡＩＮＳＯＦＣＲＩＴＨＩＤＩＡＢＯＭＢＩＡＮＤＴＨＥＳＵＲＶＩＶＡＬＯＦＴＨＥＩＲＨＯＳＴＢＵＭＢＬＥＢＥＥＳ不同株的熊蜂短膜虫与宿主生存的关系ＫｅｙｗｏｒｄｓＣｒｉｔｈｉｄｉａｂｏ...     

常绿阔叶林中种群在群落中地位测度指标的探讨

常绿阔叶林中种群在群落中地位测度指标的探讨方炜,彭少麟（中国科学院华南植物研究所,广州,５１０６５０）ＡＳＴＵＤＹＯＮＩＮＤＩＣＥＳＯＦＰＵＰＵＬＡＴＩＯＮＰＯＳＩＴＩＯＮＩＮＣＯＭＭＵＮＩＴＹＯＦＥＶＥＲＧＲＥＥＮＢＲＯＡＤＬＥＡＶＥＤＦＯＲＥＳＴ...     

APPLICATION OF NONLINEAR FORECASTING METHOD TO ANALYSIS OF ISI IN NERVOUS SYSTEM

ＡＰＰＬＩＣＡＴＩＯＮＯＦＮＯＮＬＩＮＥＡＲＦＯＲＥＣＡＳＴＩＮＧＭＥＴＨＯＤＴＯＡＮＡＬＹＳＩＳＯＦＩＳＩＩＮＮＥＲＶＯＵＳＳＹＳＴＥＭＧｏｎｇＹｕｎｆａｎ（龚云帆）ＸｕＪｉａｎｘｕｅ（徐健学）（ＤｅｐａｒｔｍｅｎｔｏｆＥｎｇｉｎｅｅｒｉｎｇＭｅｃ...     

毛华菊精油化学成分研究

毛华菊精油化学成分研究王国亮,朱信强,袁萍,袁焱明（中国科学院武汉植物研究所武汉４３００７４）关键词毛华菊,精油,化学成分ＳＴＵＤＩＥＳＯＮＣＨＥＭＩＣＡＬＣＯＮＳＴＩＴＵＥＮＴＳＯＦＴＨＥＥＳＳＥＮＴＩＡＬＯＩＬＦＲＯＭＤＢＮＤＲＡＮＴＨＥＭＡＶＥ...     

NEW SPECIES OF SAWFLIES(HYMENOPTERA:TENTHREDINIDAE)IN THE COLLECTION OF ENTOMOLOGICAL MUSEUM OF NORTHWESTERN AGRICULTURAL UNIVERSITY

ＮＥＷＳＰＥＣＩＥＳＯＦＳＡＷＦＬＩＥＳ（ＨＹＭＥＮＯＰＴＥＲＡ：ＴＥＮＴＨＲＥＤＩＮＩＤＡＥ）ＩＮＴＨＥＣＯＬＬＥＣＴＩＯＮＯＦＥＮＴＯＭＯＬＯＧＩＣＡＬＭＵＳＥＵＭＯＦＮＯＲＴＨＷＥＳＴＥＲＮＡＧＲＩＣＵＬＴＵＲＡＬＵＮＩＶＥＲＳＩＴＹＷＥＩＭｅ...     

苏北麦田恶性杂草麦家公的生态习性研究

苏北麦田恶性杂草麦家公的生态习性研究钱希（江苏省国营黄海农场,响水县,２２４６２４）ＡＳＴＵＤＹＯＮＥＣＯＬＯＧＩＣＡＬＨＡＢＩＴＳＯＦＢＡＤＷＥＥＤＳＬＩＴＨＯＳＰＥＲＭＵＭＡＲＶＥＮＳＥＩＮＷＨＥＡＴＦＩＥＬＤＳＯＦＴＨＥＮＯＲＴＨＪＩＡＮＧＳＵ...     

小鼠孤雌胚胎干细胞集落的建立

ＥＳＴＡＢＬＩＳＨＭＥＮＴＯＦＳＴＥＭＣＥＬＬＣＯＬＯＮＩＥＳＦＲＯＭＰＡＲＴＨＥＮＯＧＥＮＥＴＩＣＡＬＬＹＤＥＲＩＶＥＤＢＬＡＳＴＯＣＹＳＴＳＯＦＭＯＵＳＥ小鼠孤雌胚胎干细胞集落的建立ＫｅｙｗｏｒｄｓＭｏｕｓｅ,Ｐａｒｔｈｅｎｏｇｅｎｅｔｉｃｅｍ...     

THE LASER TOMOGRAPHICAL METHOD USINGMINIMUM OF PROJECTION FOR BIOLOGICAL OBJECT STRUCTURE STUDY

ＴＨＥＬＡＳＥＲＴＯＭＯＧＲＡＰＨＩＣＡＬＭＥＴＨＯＤＵＳＩＮＧＭＩＮＩＭＵＭＯＦＰＲＯＪＥＣＴＩＯＮＦＯＲＢＩＯＬＯＧＩＣＡＬＯＢＪＥＣＴＳＴＲＵＣＴＵＲＥＳＴＵＤＹＹｕｒｉＮ．Ｋｕｌｃｈｉｎ;ＯｌｅｇＢ．Ｖｉｔｒｉｋ;ＯｌｅｇＶ．Ｋｉｒｉｃｈｅｉ...     

植物抗寒剂防止膜脂过氧化的研究

植物抗寒剂防止膜脂过氧化的研究孙龙华,简令成,卢存福,曹丽（中国科学院植物研究所,北京１０００４４）ＳＴＵＤＩＥＳＯＮＴＨＥＰＲＥＶＥＮＴＩＯＮＯＦＰＬＡＮＴＣＯＬＤ－ＲＥＳＩＳＴＥＲＦＲＯＭＰＥＲＯＸＩＤＡＴＩＯＮＯＦＭＥＭＢＲＡＮＥＬＩＰＩＤＳ￥...     

太湖贡湖湾食物网特征研究

应用稳定性同位素技术(13C和15N)研究了太湖贡湖湾食物网特征, 结果显示由于食物来源变化多样性影响, 导致贡湖的食物网结构和营养级关系变化较为复杂, 贡湖主要生物类群13C、15N值表现出较大的种间差异。消费者13C值从摇蚊幼虫的-32.3到锯齿米虾的-22.1, 其值大小与营养级的关系没有规律性。消费者平均15N值从褶纹冠蚌的10.3到位于顶端间下鳙的19.0, 随营养级位置而升高。群落中所有种类的15N、13C值之间没有相关性(r=0.1835, P0.05), 表明该食物网是非线性食物网。研究结果验证了杂食性生物有机体普遍存在于富营养化的贡湖水域生态系统中, 且13C结果表明, 浮游植物、固着藻类以及沉水植物为贡湖食物网中大多数生物有机体的主要碳源。贡湖食物链长度为4.44营养级。     

泽蛙单倍体细胞RNA含量对胚胎发育和成活的影响

对两栖类单倍体的综合症以及死亡原因,前人有许多不同认识,本文用实验说明,单倍体细胞的RNA含量不及二倍体的一半,并认为,单倍体泽蛙的死亡原因与其细胞中RNA含量不足密切相关。     

THE ORIGIN OF THE ACETYLCHOLINE RELEASED FROM THE SURFACE OF THE CORTEX

—The specific radioactivity of acetylcholine liberated from the surface of the rabbit occipital cortex has been compared with that of the underlying cortical synaptosomal and vesicular acetylcholine at varying times after the administration of [N-Me-³H]choline. Choline was administered by diffusion from solutions placed in cups formed by Perspex cylinders applied to the surface of the cortex. Acetylcholine was collected by diffusion into these cups. The specific radioactivity of the acetylcholine declined progressively. The effect of stimulation of afferent cholinergic pathways was to cause a fall in the specific radioactivity of the released acetylcholine. However this was always higher than that of the synaptosomal or vesicular acetylcholine as represented by fractions P₂ and D of the authors’fractionation scheme. It is concluded that acetylcholine released from the cortex must come from a store or stores more recently synthesized than the endogenous acetylcholine of these subcellular fractions.