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鸟类，特别是濒危鸟类同工酶的分析，长期以来一直受到组织学样品来源上的限制。因为在分析实验中普遍采用血液和各种新鲜组织为分析材料，这常常要损伤或杀死动物，对濒危鸟类的保护是不利的。本文以生长羽毛的羽髓组织为材料，进行了乳酸脱氢酶（ＬＤＨ）同工酶的凝胶电泳分析。所得谱带清晰，重复性好，且对鸟体无伤害，是濒危鸟类同工酶分析的理想方法。

我国游钓事业的发展前景及存在的问题于洪贤，万树成，马一丹，刘虹（东北业大学哈尔滨１５００４０）游钓是集旅游和垂钓于一身的旅游娱乐活动，在旅游活动中加入垂钓活动的形式，使人们能够在充分享受大自然美丽风光的同时，享受垂钓的情趣，以达到陶冶情操和健身强体的...

本试验通过鸡胚成纤维细胞直接从犬病料中分离到一株犬瘟热病毒,定名为CDV-DL1株。该毒株在鸡胚成纤维细胞上生长良好,产生明显的细胞病变（CPE）,在电镜下观察,病毒粒子具有囊膜和纤突,大小为120—200nm。核酸型为RNA,不耐乙醚。该病毒接种幼犬,可使幼犬发病,但无论通过什么途径进行人工感染均不能使幼犬100％的发病。

对34例萎缩性胃炎患者进行胃窦G细胞密度(GCD)测定,同时观察了胃泌酸功能,血清胃泌素试餐检查、血清壁细胞抗体(PCA)情况。结果;胃窦胃炎组GCD显著低于对照组,其中胃窦中重度萎缩组GCD又低于胃窦轻度萎缩组,差异十分显著;胃体胃炎组GCD高于胃窦胃炎组,差异有非常显著性意义。两组胃粘膜功能改变不同,提示:GCD测定及泌酸功能、血清胃泌素试餐检查有助于萎缩性胃炎的分型诊断,PCA可作为分型的参考指标。

Copyright of Chinese Journal of Geological Hazard & Control is the property of China Institute of Geological Environmental Monitoring (CIGEM) Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The intraspecific and interspecific competition intensities of the shrub plant， Salix taishanensis， were analyzed using Hegyi's single-tree competition index model and integrated basal diameter instead of diameter at breast height. The intraspecific and interspecific competition intensity of Salix taishanensis accounted for 35.01% and 64.99% of the total competition intensity (86.11)， respectively，indicating that interspecific competition had a larger effect. The competition intensity of Salix taishanensis gradually increased along with basal diameter. There were nine main species of tree that exerted a competitive influence on Salix taishanensis. For those nine species， the competition intensity of intraspecific and interspecific competition with Salix taishanensis were ranked in the followdng order： Salix taishanensis >Sorbus pohuashanensis>Tilia amurensis>Pinus tabuliformis>Forsythia suspensa>Malus hupehensis> Viburnum, opulus var. calvescens>Lonicera chrysantha>Syringa pubescens. The relationship of the basal diameter of objective trees and the competition intensity between competitive trees and objective trees in the whole forest and other competitive trees nearly conformed to the pow，er function (Ic -AB K). According to the prediction of the model，w-hen the basal diameter of Salix taishanensis reached 10 cm， the competition intensity tended to be stable. Salix taishanensis trees whose basal diameter was less than 10 cm， were under strong competition pressure， while for individuals whose basal diameter was less than 10 cm， some of the surrounding competitive trees could be removed to give them enough living space， and thereby conserve the species. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Shanghai Jiaotong University (Medical Science) is the property of Journal of Shanghai Jiaotong University (Medical Science) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)