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    Studies on the Detection Method of Transgenic Plants for Exogenous Genes and Integration Site
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    Cloning and Expression of a Novel Gene Encoding CDPK in Vicia Faba and Identification of the Phosphorylation Site of V-ATPase Subunit A in Zea Mays
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    The Study on the Target Site of Porcine Myostatin
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    Modulation of Glycine Site of NMDA Receptor Contributes to the Integration of Nociceptive Processing in the Spinal Cord and Anterior Cingulate Cortex
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    Integration and Expression of the Human β-Globin Gene with Single or Multiple DNase Ⅰ Hypersensitive Site Core Fragments from Locus Control Region Following Viral Vectors Mediated Gene Transfer into Mouse Erythroid Cells
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    In terms of present vegetation condition, it is best that Pinus tabulaeformis is planted in a density of 3×1m 2 in Pishayan site.
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    A STUDY ON THE RELATIONSHIPS BETWEEN THE PRODUCTIVITY OF Pinus massoniana PLANTATION AND SITE FACTORS IN THE MOUNTAIN AREA OF GAOZHOU COUNTY
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    A Study on Restriction Endonuclease Site Polymorphism and Haplotype in the β-globin Gene Cluster in Chinese
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    Analysis of the Damage Site to Oxyleghaemoglobin by H_2O_2 on the Basis of the Changes in Absorption Spectra
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Therefore, van der Waals' interactions between acetylcholinesterase and these drugs are stronger than those between butyrylcholinesterase probably due to a small active site gorge and a significant peripheral anionic site for acetylcholinesterase.
      
Novel 5-substituted esters and homologous ester and amido derivatives of 4,5 dihydro-3,3-diethyl-2(3H)-furanone were synthesized and evaluated for anticonvulsant activity in rodents and for affinity to a site on the GABAA receptor complex ([3H]TBOB).
      
The results showed that these compounds are capable of important interactions with the NNRT binding site, which encouraged us to submit them for biological assay.
      
From these data, it may be deduced that the administration of high concentration of 18-methyl norethindrone can displace ketoprofen from its secondary binding site.
      
This work attempts to calculate the binding-site number using fluorescence spectroscopic method with bovine serum albumin (BSA) and Indo-1 as protein and ligand models, respectively.
      
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The present paper reports on the results of some preliminary observationson the insect parasites of the pine caterpillar, carried out in the Nanking dis-trict during 1936-37. (1) The following insect parasites were reared from various stages of thepine caterpillar: Egg parasites: Trichogramma evanescens Westwood, Telenomus dendrolimusiChu, Anastatus gastropachae Ashmead. Larva parasites: Casinaria dendrolimi Uchida, Rhogas spectabilis (Matsumura),Stenaraeoides octocinctus (Ashmead), Itoplectis nigribasalis Uchida,...

The present paper reports on the results of some preliminary observationson the insect parasites of the pine caterpillar, carried out in the Nanking dis-trict during 1936-37. (1) The following insect parasites were reared from various stages of thepine caterpillar: Egg parasites: Trichogramma evanescens Westwood, Telenomus dendrolimusiChu, Anastatus gastropachae Ashmead. Larva parasites: Casinaria dendrolimi Uchida, Rhogas spectabilis (Matsumura),Stenaraeoides octocinctus (Ashmead), Itoplectis nigribasalis Uchida, Tricholygasorbillans Wied., Sturmia sp., Carcelia sp. Pupal parasites: Xanthopimpla japonica Krieger, Pimpla disparis Viereck,Brachymaria obscurata (Walker), Brachymeria fiskei Crawford. Hyperparasites: Phygadeuon latipatiolator Uchida, Monodontomerus dentipes(Boheman), Brachymeria obscurata (Walker), Brachymeria fishei Crawford, Eury-toma sp. (2) The egg parasites played an important part in the natural control ofthe pine caterpillar. The percentage of parasitism reached 61% in the materialcollected at Tang-shan, 1936. Telenomus dendrolimusi and Anastatus gastropachaewere observed to be more important than Trichogramma evanescens. (3) As high as 26% of the early-instar larvae could be killed by the para-sites. The percentage of larval parasitism and the relative value of the severalparasites varied with the time at which host material was collected. A differ-ence of a few days would give entirely different results. (4) The late-instar larvae were attacked by three species of dipterousparasites. The highest percentage of parasitism observed was 42%. (5) 38.4% of the pine caterpillar were killed during their pre-papal andpupal stage chiefly by Sturmia sp. and Xanthopimpla japonica Krieger. (6) The percentage of parasitism whether in the egg, larva or pupa stagewere observed to be always higher in the second generation than in the first,a fact suggests that hibernation may have an important bearing upon thepopulation of the parasites. (7) The time of appearance of the more important parasites and theirhabits were discussed. (8) Some of the factors, such as hyperparasitism, non-synchronization ofthe life cycles of the host and parasite, over-restriction in host selection, andthe influence of certain control measures, which have adverse effects on theparasite populations, were discussed. (9) As the percentage of parasitisn fluctuated greatly with year and season,it, is, therefore, suggested that a study of the factors which are responsible forthese fluctuations is of primary importance. Based on the results of suchstudies, measures may be adopted to increase the efficiency of the parasites.

1936—37年在南京地区观察松毛虫寄生天敌所得的初步结果可简述如下: (一)南京地区业经发现的松毛虫天敌有卵寄生蜂3种:赤眼卵蜂、松毛虫长腹卵蜂、平腹小蜂;幼虫寄生蜂4种:松毛虫瘦姬蜂、松与虫红头小茧蜂、花胸姬蜂、黑基瘤姬蜂;幼虫寄生蝇3种:家蚕寄生蝇、大寄生蝇、小寄生蝇;蛹寄生蜂4种;日本黑点姬蜂、黑瘤姬蜂、大腿蜂、费氏大腿蜂;另重寄生8种。 (二)卵寄生蜂在防治松毛虫上起了适当大的作用,有时减低寄主虫口达61.24%。3种寄生蜂中以松与虫长腹卵蜂及平腹小峰为较重要。 (三)松毛虫初龄幼虫寄生率最高时可达26%。寄生率的高低及各种天敌的比较重要性与采集寄主材料的时期有密切的关系,往往数日之差,寄生率可截然不同。 (四)松与虫的后龄幼虫遭3种寄生蝇的寄生。寄生率最高可达42%。 (五)松毛虫茧期的寄生率可达38.4%,天敌中以大寄生蝇及日本黑点姬蜂为 最主要。 (六)无论在卵期、幼虫期或蛹期,第2化松毛虫的寄生率均比第1化的为高。此点似说明越冬问题是松毛虫天敌繁殖中的一个关系问题。 (七)几种比较重要的寄生天敌的发生时期和生活习性,本文中根据观察所及,加以记载。 (八)本文中将几个影响松毛虫寄生天敌虫口的因...

1936—37年在南京地区观察松毛虫寄生天敌所得的初步结果可简述如下: (一)南京地区业经发现的松毛虫天敌有卵寄生蜂3种:赤眼卵蜂、松毛虫长腹卵蜂、平腹小蜂;幼虫寄生蜂4种:松毛虫瘦姬蜂、松与虫红头小茧蜂、花胸姬蜂、黑基瘤姬蜂;幼虫寄生蝇3种:家蚕寄生蝇、大寄生蝇、小寄生蝇;蛹寄生蜂4种;日本黑点姬蜂、黑瘤姬蜂、大腿蜂、费氏大腿蜂;另重寄生8种。 (二)卵寄生蜂在防治松毛虫上起了适当大的作用,有时减低寄主虫口达61.24%。3种寄生蜂中以松与虫长腹卵蜂及平腹小峰为较重要。 (三)松毛虫初龄幼虫寄生率最高时可达26%。寄生率的高低及各种天敌的比较重要性与采集寄主材料的时期有密切的关系,往往数日之差,寄生率可截然不同。 (四)松与虫的后龄幼虫遭3种寄生蝇的寄生。寄生率最高可达42%。 (五)松毛虫茧期的寄生率可达38.4%,天敌中以大寄生蝇及日本黑点姬蜂为 最主要。 (六)无论在卵期、幼虫期或蛹期,第2化松毛虫的寄生率均比第1化的为高。此点似说明越冬问题是松毛虫天敌繁殖中的一个关系问题。 (七)几种比较重要的寄生天敌的发生时期和生活习性,本文中根据观察所及,加以记载。 (八)本文中将几个影响松毛虫寄生天敌虫口的因子提出讨论,这些因子包括;重寄生的严重、天敌发生时期与寄主生活史的不相

The pine caterpiller is one of the most important pests of pine tree in China.There are many natural enemies of pine caterpillers, such as parasites, predators etc.Determining the influence of natural enemies upon the outbreak of pine caterpiller isa very important task. A systematic study especially on the activities of parasites uponpine caterpiller was carried out in 1954 in Tung-an, Hunan Province. The present paperis a preliminary report, which narrates the results obtained from the examinations andpoints...

The pine caterpiller is one of the most important pests of pine tree in China.There are many natural enemies of pine caterpillers, such as parasites, predators etc.Determining the influence of natural enemies upon the outbreak of pine caterpiller isa very important task. A systematic study especially on the activities of parasites uponpine caterpiller was carried out in 1954 in Tung-an, Hunan Province. The present paperis a preliminary report, which narrates the results obtained from the examinations andpoints out that the parasites exert great influence on the outbreak of the pine cater-piller. The results are as follows: 1. According to the observation in 1954, there are many natural enemies, whichprey upon the pine caterpiller on Pinus massoniana in Tung-An district. Among these,the parasites are the most decisive factor in limiting or suppressing the outbreak ofpine caterpiller. 2. The egg parasites are:Telcnomus dendrolimusi Chu, Trichogramma evanescensWestwood, Anastatus gastropachae Ashmead, Enterus tabatae Ishii, Pachyneuron nawaiAshmead and Eupteromalus sp. Among these, the first three are more important. 3. The percentage of egg parasitization of the first brood is 12.76%, of which,5.83% is due to T. dendrolimusi. As to the second brood, it increases to 40.61%, ofwhich 33.45% is due to T. dendrolimusi. 4. From the observations made during the peroids of emergence of the egg para-sites, we have obtained some knowledge about the biological characteristics of them.These ideas offered some important suggestions for the practical application of egg para-sites. 5. The larval parasites are: Campoplex bicolor Ashmead, Rhythmonotus takagii(Mats.), Rhogas spectabilis (Mats.), Phanerotoma flavida Enderlein, Apanteles liparidisBouche, Sarcophaga peregrina R.-D., Beauveria bassiana (Bals.)ere. Among these, B.bassiana and the parasitic flies are the major ones. 6. The results of three sets of observations on larval parasites show that the deathrate (including parasitization) of the overwintered larvae is 56.62%, of the first brood82.83%, and of the second brood 40.83%. Thus the death rate (mainly parasitization) isconsiderably high. 7. The pupal parasites are: Xanthopimpla japonica Krieger, Brachymeria obscurata(Walker), Stenaraeoides octocinctus (Ashmead), Pimpla disparis Viereek, Iseropus sa-tanas (Morley), Sarcophaga peregrina R.-D., Beauveria bassiana (Bals.) etc. Amongthese, X. japonica, the parasitic flies and B. bassiana are the major ones. But it mustbe noted that probably due to the parasitization of the fungus, a high percentage ofpupae failed to transform into adults. For example, for the overwintered brood, it is86.68%, the first brood 40.11%. It is worthy for further study. 8. The results of two sets of observations on pupal parasites show that the deathrate (including parasitization) of the overwintered brood pupae is 54.72%, that of thefirst brood pupae is 66.70%. Thus the death rate (mainly parasitization) is also consi-derably high.

1.据1954年考查,东安马尾松毛虫的天敌很多,尤其是寄生天敌,它是限制或抑制松毛虫大发生的决定性因素。 2.卵期的寄生天敌有:松毛虫黑卵蜂,赤眼蜂,平腹小蜂,白角小蜂,名和小蜂及金小蜂等六种,其中以前三种较为重要。 3.第一代松毛虫的卵寄生率为12.76%,其中黑卵峰的寄生率达5.83%,第二代松毛虫的卵寄生率为40.61%,其中黑卵蜂的寄生率达33.45%。 4.松毛虫各种卵蜂羽化时期及数量的观察,使我们初步了解卵蜂的一些生物学特性,对于今后饲放卵寄生蜂防治松毛虫的措施提供了重要依据。 5.幼虫期的寄生天敌有:两色瘦姬蜂,黑胸姬蜂,红头小茧蜂,黄甲腹小茧蜂,毒蛾绒茧蜂,寄生蝇类及白僵病菌等,其中以白僵病菌及寄生蝇类较为重要。 6.三次幼虫期寄生天敌的考查可以看出:越冬代老熟幼虫的死亡率(包括寄生率)达56.62%,第一代幼虫的死亡率(包括寄生率)达82.83%,第二代幼龄幼虫的死亡率(包括寄生率)达40.83%,幼虫期的死亡率(主要是寄生率)相当高。 7.蛹期的寄生天敌有:日本黑点姬蜂,大腿蜂,花胸姬蜂,黑瘤姬蜂,松毛虫瘤姬蜂,寄生蝇类及白僵病菌等,其中以日本黑点姬蜂、寄生蝇类及白僵病菌等较为重要,但需指...

1.据1954年考查,东安马尾松毛虫的天敌很多,尤其是寄生天敌,它是限制或抑制松毛虫大发生的决定性因素。 2.卵期的寄生天敌有:松毛虫黑卵蜂,赤眼蜂,平腹小蜂,白角小蜂,名和小蜂及金小蜂等六种,其中以前三种较为重要。 3.第一代松毛虫的卵寄生率为12.76%,其中黑卵峰的寄生率达5.83%,第二代松毛虫的卵寄生率为40.61%,其中黑卵蜂的寄生率达33.45%。 4.松毛虫各种卵蜂羽化时期及数量的观察,使我们初步了解卵蜂的一些生物学特性,对于今后饲放卵寄生蜂防治松毛虫的措施提供了重要依据。 5.幼虫期的寄生天敌有:两色瘦姬蜂,黑胸姬蜂,红头小茧蜂,黄甲腹小茧蜂,毒蛾绒茧蜂,寄生蝇类及白僵病菌等,其中以白僵病菌及寄生蝇类较为重要。 6.三次幼虫期寄生天敌的考查可以看出:越冬代老熟幼虫的死亡率(包括寄生率)达56.62%,第一代幼虫的死亡率(包括寄生率)达82.83%,第二代幼龄幼虫的死亡率(包括寄生率)达40.83%,幼虫期的死亡率(主要是寄生率)相当高。 7.蛹期的寄生天敌有:日本黑点姬蜂,大腿蜂,花胸姬蜂,黑瘤姬蜂,松毛虫瘤姬蜂,寄生蝇类及白僵病菌等,其中以日本黑点姬蜂、寄生蝇类及白僵病菌等较为重要,但需指出,可能是因为病菌寄生的原因,未羽化蛹的比例很大,如在越冬代占36.68%,第一代占40.11%,这是值得今后深?

The lumbosacral cord of a 55-day baby girl was cut serially and stained for a microscopicstudy.It was twice split into two with extensive dysplasia in its dorsal parts.Numerous primarysensory cells were strewn within the cord.The present study was particularly concerned with theirclassification,distribution and derivation.In addition to their normal sites,the sensory ganglionic cells are scattered on the dorsal aspectsof the cord,along the space between the separated cords,in the openings of the anterior...

The lumbosacral cord of a 55-day baby girl was cut serially and stained for a microscopicstudy.It was twice split into two with extensive dysplasia in its dorsal parts.Numerous primarysensory cells were strewn within the cord.The present study was particularly concerned with theirclassification,distribution and derivation.In addition to their normal sites,the sensory ganglionic cells are scattered on the dorsal aspectsof the cord,along the space between the separated cords,in the openings of the anterior and posteriormedian fissures and also within the crevices inside the cord,yet communicating to the outside.Such sensory elements are surrounded with capsular cells;this is also characteristic of a few sen-sory cells slightly sunken into the intramedullary structures in continuation with the heterotopicganglionic formations.A number of the sensory cells are deeply embedded in the supernumerary gray and white for-mations chiefly in the dorsal portions;they are especially numerous in the anterior gray commissureand the anterior horn.Such cells are devoid of a capsule.In the early embryonic period,unfavorable conditions retard the mutual approximation of theneural folds and the precocious ectomesenchyme thrusts itself between them.The dorsal edges ofthe folds are then forced to bend ventrally toward the neural plate,resulting in a duplication of thespinal cord.During the rolling-in process,the irregular margins of the neural folds and the out-thrusts ofthe ectomesenchyme conjoin to produce the supernumeraray structures in the dorsal portions of thecord.Some presumptive sensory elements on the folds may be roiled into such intramedullary unitsand grow up in situ.The neural crest represents the spear-head of the rollingin fold;its presumptive sensory ele-ments may well disperse themselves into the precursory anterior gray commissure and theanterior horn.The primarys sensory cells and the capsular cells are both derived from the ectoderm.Theformer bear capsular cells in case they have participated in the process of ganglion formation;whereas they lack such a capsule if they grow up right in their erratic sites.The intraspinal sensory ganglionic cells are chiefly derived from the neural crest;this doesnot exclude the tube wall as being another possible source.Though erratic in postion,the intraspinal sensory cells may perform a fairly normal function.

在本研究,切片观察了一个生后55天的女婴的脊髓;它在腰骶部有两次析为左右二条,背部的灰白结构位置错乱。脊髓内部出现了许多一级的感觉细胞。本研究特要阐明这些细胞的类型、配布和来源。除了常位以外,神经节细胞散处脊髓的背方、左右分立的脊髓的中间、前后正中裂口、以及外通表面的髓内罅隙中。它们的外周例有被囊细胞。一级的感觉细胞可深入脊髓背部额外的灰白结构中;前连合和前角中特别众多。这些细胞例无被囊。在胚胎的早期,二侧的神经褶遇合迟滞,其间插进了外叶性间质;二褶的背缘被迫弯向腹方,触接神经板,结果,左右各成一条脊髓。神经褶边缘参差,在旋捲的过程中会同间质的推拓,在脊髓背部就形成额外的灰白结构。褶上先在性的感觉成分有些一同捲入髓内,就地生长起来。神经嵴是旋捲部分的矛头,它的感觉分子就顺势散入来日的前连合和前角中。感觉细胞和被囊细胞都是源出外胚层。前者若曾参预神经节的形成,外周就有被囊细胞;若是在异位就地成长,就无被囊的结构。异位的感觉细胞来自神经嵴,但可能有少数发自神经管壁。脊髓内的感觉神经元虽然变了位置,但仍可有很正常的机能。

 
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