昆虫学名中属名和种名的属性

<正> 采用双名法命名生物,一般包括一个名词的属名和一个形容词的神名.例如意大利蜜蜂Apt。。。Ilif。,a L.、葡萄十星甲虫 Oidc。dccc-。pu。c。。。。Billb.;但是,少数属名是名词而种名也是名词。例如牛羽虱Bo。icola ho。i。(L.)、狗林头蚤 c。,,co。p4。l。pos ca。。。(nit1S卜··。 拉丁文及拉丁化的其他文字,名词和形容词都有文法性的,阳性、阴性、中性三者,各从词尾表现出,阳性词尾为:-u。、-or、-7r、-o’、-”、。O。等;阴性词尾为:-。、-。、-S、-x、-cs、-。s、-eo。-。G、-。。等;中性词尾为:-。m、-G。、-O。、。。r、-ar、-ma、J。、-r。、J、-。、-C等,其中阳性词尾较多用一us,阴性词尾用一a,中性词尾用一。。,总的用一a为最多。     

美生物工学公司的财政数据,1982(百万美元)

公司名NOVO Industri介eh America GrouPGenenteehCetUSCollagen合作研究公司Hybritech50以he饥Biotech分子遗传学公司CytoxEnz。生化公司遗传工程公司Ribi免疫化学公司单克隆抗体公司Bio ResPonse52/81赚 56。7 %82/81 22 0。941084081上八bC︸厅‘OOn舀Q︺︸8 :。..…n,﹄O八On︸ot了,曰qU 一﹄一一出售额%324。2637.4 2328。89016。0 627。4 2756。5 904。8 1681。5 541。1 1461。1一20。9 420。5 1910。3 780。1 88一1.4一一1。3一一1。1一一0。3,一1。1一一1。6一美生物工学公司的财政数据,1982(百万美元)@聂世芳…     

我国部分城市市花一览

一市两种市花的: 北京月季、菊花。青岛耐冬、月季。南昌月季、金边瑞香。芜湖月季、菊花。新乡月季、石榴。信阳紫薇、月季。恩施月季、桂花。济宁荷花、月季。无锡杜鹃花、梅花。合肥石榴、桂花。肇庆荷花、鸡蛋花。一市一种市花的:     

光系统Ⅱ颗粒放氧的钙激活和钙定位

1IntroductionTheoxyg6n－evolvingco…。（OEC）ofphotosystem11（ppfi）isahighlycideredstructllleofvanouspolpotideswhichp～dethebindingsltesfortheInompccofactorsandmedi-atetheactionofthem．（GhanotaldsandYoc1990,DebuS1992,Yoc1991）．Thep。essof…。lutiontakesplaceinmD。arthel。佃。－faceofthethylakoidmembrane．Itis“v。byl…恤mpresfo。。－ganese,2。3calciumandsevendCIions．OfthetllleekindsOfionsinvolvedinthephotOSyntheticsPlittingofwater,陶峙见。［［ene——。Ivelyc佃n－tenzed（Ghanota…     

八类特种养殖品在海外走俏

据外贸部门有关资料介绍,近两年有如下特种养殖产品在国外走俏,可以适时发展: 1.甲鱼。国内外均为席上佳品。2.泥鳅。日本可年耗4000余吨,大部分从我国进口。3.金钱龟。一些国家招待贵客不可少。4.蛇。香港每年耗活蛇50万条,冻蛇肉数十吨。5.黄鳝。国际市场走俏。6.鸭。鸭舌、鸭掌、鸭内脏被视为席上珍品,价格昂贵。7.蚕品。蚕丝织品在世界市场上常年不衰。8.长毛兔。需求量与日俱增。     

Exact Controllability of Age-Structured Predator-Prey Populations

1IntroductionT5e劝dysisd8贝ami。dpTdatO。preynit。ti。is4iquitousinthebiologicalworldandlsd。id既曲ienit。estan6ipeceto。IOgy．Thetheoretidstudydpredation晌hadahghistoryho。lugwiththe。nalworkofInne．aandVolt。,andcontin。tobeofwid聊readinterest咖y．仇iiithelateof1980’s,most…ator－pteystUdieshavebudonInteractingspedeswithoutsg。sin．－Cture（forexmple,sce［1」,［2」,［3」and［4］）．HOwever,asthelin阿mceof明卜s刎cmreInpoPulaMnhasbecomemorewidelyrecognized,thereisanIn－er。lugnum…     

六州歌头——乘东风 攀高峰

扫除妖魅,寰宇凯歌宏。篡权者,黄粱梦。彩霞飞,壮鲲鹏,蓬雀徒目送。忆导师,千秋颂。松柏青,鲜花盛,岁峥嵘。抓纲治国,决策雄威重,领袖英明。齐中华步伍,开始新长征,万里东风。战旗红。科学实验,人欢动。学大庆,志无穷。求红专,合工农,苦钻研,永不松。打好这一仗,现代化,出奇功。真战士,骨头硬,竞争锋。锦绣前程,展     

1991年第1期“高中毕业班生物检测题”参考答案

一、选择题 1 .D 2.C 3.B 4.C 5。A 6.C 7.CS。C 9。B 10.A 11。A 12.B 13。D 14。D 15。D 16。D 17。B 18。A 19.B20。B 21。B 22。C 23。B 24。D 25。B 26。C 27。A 28。D 29.C 30。C 31.B 32.D 33。A 34。D 35。D 二、简答题 36.水的光解葡萄糖和丙酮酸的分解37.70%95%ATP 38。(l)8283(2)第一营养级(绿色植物)(3)鹰增多,植物减少(4)田鼠数量变动而引起的39.(1)转氛基作用、缩合反应、脱氛基作用(2)尿素肝脏肾(3)CO:、H:O(4)脂肪糖类(5)食物通过转氛基作用体内蛋白质的水解40(l)①珍尸巢(2)②偷卵管(3)⑧子宫(4)胎膜子…     

An Alternative Nonlinear Genetic Model

1IntroductionMnyqllantitativegcheticsmedelsareb明donlinearopresslonswhi咖b皿little,ifany,。lationtothebloch。Icalactionofthegeneorgen。（fedcole1982）．FOrkrnannand＆yffert（1977）h。develoPedmedelsthst。pr。nt。reCledytheblOCh。IcalSCt1Ofl．IntheirStUdy,SeyffertandForkrnann（976）relatedtheanthOCyanincontentoffi。ersofMatth。lin。。R．Br．tothenUmberoffunctionalalleiescontrollingthattraitbytheBaule－MitSCherllchfunc－tion,They团唱vedth叭thelrobservstlonsonlsogenotyPeSofM．fncan…     

Large-Scale Comparison Analysis of Genome Sequences

IIntMuctiona习nenC6allpoent13asenondynamiCpmpCgIsthemostWidely11。dllethed11。－quencecompgnsonatpresent．Wbenmpingon18I’ge一切degenomempence肛dyslswiththiskindofmethed,wefacetwomperdifficulties,the18ig6stompandtheIOllgmptationaltdrie．My。。dMill。［“spplyHi。比那’stecheniqJ‘、mpen。alipentpwhl。,wb。dgofl山mconsumeSpaceMypZ’Oportlonaltothesumd山eapuencelmphs．AnewpIOgTgnSIM”,utilizingthealgorithm,hasbeenueding。eequ。ceallpoent．How。,themptationaltimebySIMisstilltoolO…     

六种藓类植物茎的比较解剖学研究

通过对6种藓类植物,即褶叶青藓(Brachythecium salebrosum(Web.et Mohr.)B.S.G.)、湿地匐灯藓(Plagiomnium acutum(Lindb.)Kop.)、侧枝匐灯藓(Plagiomnium maximoviczii(Lindb.)Kop.)、大凤尾藓(Fissidensnobilis Griff.)、大羽藓(Thuidium cymbifolium(Doz.et Molk.)B.S.G.)和大灰藓(Hypnum plumaeforme Wils.)嫩茎和老茎的石蜡切片和显微观察发现,同一藓类植株的嫩茎和老茎,茎结构稳定,不同种藓类植物茎横切面具有不同特征.植物体茎横切面形状、表层细胞的层数、细胞大小和细胞壁厚薄、皮层细胞大小和形状、中轴的有无以及比例等特征可以作为藓类植物的分科分类依据之一.     

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.