Anesthesia in ophthalmic surgery     

D B Brunson 《Veterinary Clinics of North America: Small Animal Practice》1980,10(2):481-495

Ophthalmic surgical patients can be routinely anesthetized without complications if the surgeon has a thorough understanding of the effects of anesthetic agents on ocular physiology. The regulation of intraocular pressure is important for successful ophthalmic surgery and can be greatly affected by the anesthetic procedure. Agents utilized to intentionally decrease intraocular pressure are often employed for intraocular procedures. These agents have profound systemic effects that must be anticipated. Adverse drug interactions between sympathomimetic mydriatics and halogenated inhalation anesthetics also must be considered.  相似文献   

胡桃长足象研究初报     

景河铭  林昌伦  苟国谦 《植物保护学报》1980,7(1):9-16

胡桃长足象是核桃果实的大害虫,为害损失很大。1975年以来,我们在四川平武地区进行了生活习性观察和防治试验,初步明确了以下几个问题。1.胡桃长足象一年一代。11月份以成虫越冬,次年4月上旬开始活动,为害果、芽、嫩枝、叶柄,5月上旬交尾产卵于果中,一般一果一粒,8月中旬产卵结束,10月陆续死亡。当年成虫6月中旬羽化,进行为害。2.成虫有假死性和向阳性,飞翔力弱,具有与核桃树芽苞相似的保护色。3.防治胡桃长足象,应抓住越冬成虫大量出现和卵孵化盛期时进行。用每毫升含孢量二至五亿的白僵菌液或50%的三硫磷乳油、50%速灭松乳剂、82%磷胺乳剂加水一千倍喷雾,效果良好。  相似文献   

An Approach to Forecasting the Incidence of Potato and Cereal Aphids in Scotland1     

Lindsay A. D. TURL 《EPPO Bulletin》1980,10(2):135-141

Many potato and cereal infesting aphids in Scotland are either completely cr partially anholocyclic. This makes forecasting their first appearance and abundance on crops difficult, when compared with holocyclic species such as Aphis fabae Scopoli. This paper describes an analysis of the early movement of nine aphid species, commonly found on potatoes and cereals in Scotland, in relation to winter and early spring climate. Data on their early movement have been extracted from the catches in three of the sjx.12–2.rn suction traps now operating in Scotland in cooperation with the Rothamsted Insect Survey. The particular importance of early spring temperature has been established. The extension of this work to develop a predictive forecast of summer activity of anholocyclic aphid species is discussed. En Ecosse, une forte proportion de pucerons des pommes de terre et des céréales est entièrement ou partiellement anholocyclique. Ceci complique la prévision sur le moment de leur première apparition et sur leur abondance par rapport aux espéces holocycliques telles qu'Aphis, fabae. Cette étude concerne les déplacements précoces de neuf espéces de pucerons retrouveés fréquemment sur les pommes de terre et les céSreales. Les données sur les deplacements ont été obtenues à partir de trois des six piegès à succion de I2,2 m installes en Ecosse en cooperation avec le « Rothamsted Insect Survey », Il est apparu que la température printanière revêt une importance particuliere. Les recherches se poursuivent dam le but d'établir des prévisions sur le développement estival des espèces anholocycliyues de pucerons.  相似文献   

Mechanisms of speciation     

Woodruff DS 《Science (New York, N.Y.)》1978,199(4335):1329-1330

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Califano, marshall, petitioned on beryllium     

Shapley D 《Science (New York, N.Y.)》1978,199(4335):1320

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Goldberger named caltech president     

Shapley D 《Science (New York, N.Y.)》1978,199(4335):1321

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Writing, dictating, and speaking letters     

Gould JD  Boies SJ 《Science (New York, N.Y.)》1978,201(4361):1145-1147

It is commonly assumed that dictation requires a long time to learn, but authors eventually dictate much faster than they write. Performance results now show that novice dictators can learn in a few hours to dictate with the speed and quality with which they write. However, they do not think they perform this well. Dictators with years of experience are from 0 to 25 percent faster than novices, depending upon the complexity of the letters. Planning time is about two-thirds of composition time, regardless of the method of composition.  相似文献   

Rotating neutron stars     

Scargle JD 《Science (New York, N.Y.)》1978,199(4327):416-417

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Finklea quits as chief of occupational health institute     

Shapley D 《Science (New York, N.Y.)》1978,199(4327):408

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Wiretaps, anyone?     

Shapley D 《Science (New York, N.Y.)》1978,199(4330):750

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