学名索引

学名页Aeaeia aurieulaeformis············……(116) catechu·····························,···……(116) confusa···‘·····························……(116)Acalypha L.···························……(62) kerrii Craib························……(62) v irginica L.··、···················,·…(62)Acanthus ebractratus···············……(217) 11…     

广西植物1981年——第1卷 第1～4期 学名索引

学名期贡Abelmosehu,e,eulentu,(L.)Moene五 ……,.···……。‘,…,…‘二。。…。二。.……2一24人b住ti10n宝nd介um丫L.)G Don··············……2一24Acac呈a catechu Willd·························“…4一13人canthocereus····4······,····,·,.···············……嫂一3eAcanthu:’ebra时eatu:Va五1··················……4一10A .n让托01呈往,L三nn.······,·············,···……4一10,工3人c,r tonkinen蛇…     

学名索引

学名页Acacia aulacocarpa··········、···、·、…(62)A .auriculaeformis··················……(62)A .catechu·························,····……(62)A .cicuata·····························……(62)A .confusa······························……(62)A .cunninghamii····················……(62)A .dealbata···················,、······、·,…(62)A…     

《广西植物》第四卷学名索引

食引359从eurites molueeana······.··.·····,,·…162,241、244A .m。川ana Wil仪··,.一州、,“”···“、”·,’·”,二227川四rj top汗rl多份:,’’,.,’’二,’’·,’’”··…l..···”·“…”马拟j‘mataceae.“..…,”····..········“····……”…169All扛ntodia.·.……“·········”·········n·..··,“…01AUium copa,.·”·····”·““·”··“”··“··…,’’·…拓g^。扒stulo邪位t’’·…”·“·“一,,“····“”·,’f··“:1的人.macro…     

广西植物——第1卷 总目录

第1期(2951年3月)花坪—南岭山地上的一个自然保护区·,······‘·············“····一,.···……钟济新农业生产与生态平衡……,·······················……,’’···……,·······……,..··....……银杉生态环境的调查研究·····························……,’’············……‘一李瑞高罗汉果叶组织培养的研究··········...···········……,’’························……林…     

广西植物1982年第2卷第1～4期学名索引

学名期页Abies’····················……4一177,178Abietoideae.···········……4一177,178Aeaeia eonfusa Merr······……1一20Aeorus tatarinowii Sehott 1一52Aetinidi‘arguta(s.et 2.) Planch.ex Miq.·········……1一2A。ehinensis Planeh. var。ehinensis form.jingganshanensiS C .F.Liang··················……1一4 v‘r .hispida C.F.Li己ng 1一4 form .ehloroearPd C .F.Liang···············……1一4A .eylindriea C.F.Liang va…     

扩散速率估算的影响

理论上,土壤呼吸通量的量值可以通过观测土壤呼吸CO₂扩散速率(əc/ət)计算得到。但是为获得əc/ət,通常须允许土壤呼吸箱内CO₂浓度升高,因此,如何估算外界大气CO₂浓度条件下的əc/ət是土壤呼吸观测技术的关键,关系到观测结果的准确性。通常əc/ət的估算会受土壤表层大气CO₂扩散梯度(即土壤呼吸箱内CO₂扩散梯度和大气CO₂浓度昼夜变化)的影响。目前,线性回归方法是土壤呼吸观测中估算əc/ət的基本方法。然而,常用的线性回 归方法会低估əc/ət,而指数回归方法则可以准确地估算əc/ət。夜间əc/ət的变化与大气CO₂ 浓度之间存在非常明显的负相关关系。夜间土壤表层大气CO₂扩散梯度的减小导致线性回归方法明显低估əc/ət。əc/ət的昼夜变化过程存在明显的非对称性现象,而指数回归方法可以更好地描述əc/ət昼夜变化的非对称性响应。     

广西植物第2卷总目录

第i期(1982年3月)称猴桃属新的分类群,·,····················································································……梁畴芬(1)猪屎豆学名的订正及同属药用植物······························,······································……杨纯瑜(7)金桔组织培养的初步研究·······································…     

基因操作专辑

在《蛋白质、核酸、酵素》1981年,26卷,第5期上,报导了准备出版,’I病时增刊。该增刊是基因操作专辑,包括的内容有:序文·…,·,·.····,·……”···················································……松原谦一矢野走司1.基因操作的现状 关于日本原核细胞生物的基因操作在发酵工业中的基因操作···························................     

酵母tRNAAla中修饰核苷酸T54,Ψ55的生物功能

酵母tRNA^Ala的3′半分子与一个11聚的DNA片段(5′GGAATCGAACC3′)杂交后用RNase H酶解,该酶能在Ψ₅₅的3′侧定点剪切,这样就制备得片段C₃₆-Ψ₅₅该片段经1～2个高碘酸氧化和β-消去得片段C₃₆-T₅₄和C₃₆-G₅₃机器合成了3个酵母tRNA^Ala的片段,分别j是片段C₅₆-A₇₆,U₅₅-A₇₆(以U替代Ψ₅₅)和U₅₄-A₇₆(以UU替代T₅₄Ψ₅₅).合成和制备的片段以适当的组合用T₄RNA连接酶连接,产物是酵母tRNAtRNA^Ala的3′半分子或其类似物.3种3′半分子或其类似物分别与天然5′半分子连接得重组天然酵母tRNA^Ala(tRNAr)和2个酵母tRNA^Ala的类似物:(1)tRNAa(以U替代Ψ₅₅),(2)tRNAb(以UU替代T₅₄Ψ₅₅).体外测定了它们的丙氨酸接受活力和参入活力,发现酵母tRNA^Ala的类似物tRNAa和tRNAb与天然重组酵母tRNA^Ala相比,它们的氨基酸接受活力分别降低了25%和55%,参入活力分别降低了35%和30%.说明酵母tRNA^Ala中的修饰核苷酸T₅₄和Ψ₅₅对该tRNA的功能有重要的影响.     

Investigation of the mechanism of temperature sensitivity of the electroreceptors of ampullae of lorenzini

In experiments on Black Sea skates (Raja clavata), the potential of the receptor epithelium of the ampullae of Lorenzini and spike activity of single nerve fibers connected to them were investigated during electrical and temperature stimulation. Usually the potential within the canal was between 0 and –2 mV, and the input resistance of the ampulla 250–400 k. Heating of the region of the receptor epithelium was accompanied by a negative wave of potential, an increase in input resistance, and inhibition of spike activity. With worsening of the animal's condition the transepithelial potential became positive (up to +10 mV) but the input resistance of the ampulla during stimulation with a positive current was nonlinear in some cases: a regenerative spike of positive polarity appeared in the channel. During heating, the spike response was sometimes reversed in sign. It is suggested that fluctuations of the transepithelial potential and spike responses to temperature stimulation reflect changes in the potential difference on the basal membrane of the receptor cells, which is described by a relationship of the Nernst's or Goldman's equation type.I. P. Pavlov Institute of Physiology, Academy of Sciences of the USSR, Leningrad. I. M. Sechenov, Institute of Evolutionary Physiology and Biochemistry, Academy of Sciences of the USSR, Leningrad. Pacific Institute of Oceanology, Far Eastern Scientific Center, Academy of Sciences of the USSR, Vladivostok. Translated from Neirofiziologiya, Vol. 12, No. 1, pp. 67–74, January–February, 1980.     

Principles of organization and evolution of systems of regulation of functions

Evolution of living organisms is closely connected with evolution of structure of the system of regulations and its mechanisms. The functional ground of regulations is chemical signalization. As early as in unicellular organisms there is a set of signal mechanisms providing their life activity and orientation in space and time. Subsequent evolution of ways of chemical signalization followed the way of development of delivery pathways of chemical signal and development of mechanisms of its regulation. The mechanism of chemical regulation of the signal interaction is discussed by the example of the specialized system of transduction of signal from neuron to neuron, of effect of hormone on the epithelial cell and modulation of this effect. These mechanisms are considered as the most important ways of the fine and precise adaptation of chemical signalization underlying functioning of physiological systems and organs of the living organism