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Effect of Alstonia scholaris bark extract on testicular function of Wistar rats

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Asian Journal of Andrology 2002年第3期4卷 175-178页

作者： R. S. Gupta Rakhi Sharma Aruna Sharma A.K. Bhatnager M.P. Dobhal Y.C. Joshi M.C. Sharma Reproduction Physiology Section Department of Zoology University of Rajasthan Jaipur-302004 IndiaReproduction Physiology Section Department of Zoology University of Rajasthan Jaipur-302004 IndiaReproduction Physiology Section Department of Zoology University of Rajasthan Jaipur-302004 IndiaDepartment of Chemistry S.S. Jain Subodh P.G. College Jaipur-302004 IndiaRoswell Park Cancer Institute Elm & Carlton Streets Buffalo New York 14263 USADepartment of Chemistry University of Rajasthan Jaipur-302004 IndiaDepartment of Chemistry University of Rajasthan Jaipur-302004 India

Abstract Aim: To evaluate the antifertility effect ofAlstonia scholaris bark extract in male rats. Methods: In male Wistar rats Alstonia scholaris bark extract was given by oral route at a dose of 200 mg/day for 60 days. The fertility and testicular function were assessed by mating tests, sperm motility, sperm concentration, biochemical indices and testicular cell population dynamics. Results: Oral feeding with the extract at a dose of 200 mg/day for the period of 60 days did not cause body weight loss, while the weights of testes, epididymides, seminal vesicle and ventral prostate were significantly reduced. The production of step-19 spermatids was reduced by 79.6% in treated rats. The population of preleptotene and pachytene spermatocytes were decreased by 61.9% and 60.1%, respectively. Spermatogonia and Sertoli cell population were also affected. The seminiferous tubule and Leydig cell nuclear area were reduced significantly (P<0.01) when compared to the controls. Reduced sperm count and motility resulted in a total suppression of fertility. A significant fall in the protein and sialic acid content of the testes, epididymides, seminal vesicle and ventral prostate as well as glycogen content of testes were also noticed. The fructose content in the seminal vesicle was lowered whereas the testicular cholesterol was elevated as compared with the controls. The following compounds were obtained from the extract with chromatographic separation over Si-gel column: α-amyrin, β-amyrin, lupiol acetate, venenative, rhazine and yohimbine. Conclusion: At the dose level employed, Alstonia scholaris bark extract has a significant antifertility effect in male rats; the primary site of action may be post meiotic germ cells (Step 19 spermatids).

关键词： Alstonia scholaris testis sperm motility sialic acid Sertoli cells

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完善消费税成为地方税主体税种的思考

国际税收 2014年第10期 74-76页

作者：江苏省苏州工业园区地方税务局课题组马伟苏州工业园区地方税务局江苏苏州215028

在营业税改征增值税全部完成后,我国将面临地方税主体税种的缺位问题,各界关于消费税能否替代营业税作为地方税主体税种的讨论很多。本文借鉴国际经验,分析了我国消费税的现存问题,从总体思路、税制设计及相关配套改革等方面探讨了如何... 详细信息

在营业税改征增值税全部完成后,我国将面临地方税主体税种的缺位问题,各界关于消费税能否替代营业税作为地方税主体税种的讨论很多。本文借鉴国际经验,分析了我国消费税的现存问题,从总体思路、税制设计及相关配套改革等方面探讨了如何优化我国现有消费税制,以使其担当起地方税主体税种的任务。

关键词： “营改增” 消费税改革地方税体系

Phytoremediation of Rocky Slope Surfaces: Selection and Growth of Pioneer Climbing Plants

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Pedosphere 2009年第4期19卷 541-544页

作者： WANG Zhong-Qiang WU Liang-Huan S. ANIMESH ZHU Yuan-Hong Ministry of Education Key Lab of Environmental Remediation and Ecosystem Health College of Environmental and Resource Sciences Zhejiang University Hangzhou 310029 （China） College of Urban and Environmental Sciences Northeast Normal University Changchun 130024 （China） Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition College of Environmental and Resource Sciences Zhejiang University Hangzhou 310029 （China） Department of Crop and Soil Sciences The Pennsylvania State University University Park PA 16802 （USA）

INTRODUCTION As a result of the massive construction following rapid economic growth in China, extraction of building materials from mountain resources has left behind many quarries. Those quarries usually have rocky surfaces and steep slopes. The existence of rocky slopes is not only a safety hazard but also increases soil erosion and affects landscape aesthetics. Natural restoration of vegetation on rocky slope surfaces is a very slow process, which might require hundreds of years, and is not considered an acceptable restoration strategy （Cullen et al., 1998）. Phytoremediation methods have been widely considered as a better option for vegetation establishment on rocky slope surfaces （Muzzi et al., 1997）.

关键词： relative growth rate survival rate vegetation restoration

Stabilization of Power Systems by Switched Controllers

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Stabilization of Power Systems by Switched Controllers

整合HPV状态、侵袭模式,形态学和分子标记的宫颈腺癌分类

第二十六届中国控制会议

作者： Li Zhengguo1,Yang Guanghong2,Wen Changyun3,Xie Wenxiang4 1.Media Division,Institute for Infocomm Research,Singapore 1196132.Northeastern University,Shenyang China3.School of EEE,Nanyang Technological University,Singapore 6397984.Seagate,Science park I,Singapore

An interesting application of switched control is provided in the field of power systems with either temporary fault or permanent *** a power system is modelled by a switched linear system.A switched controller is des... 详细信息

关键词： power system switched control stability transient performance

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诊断病理学杂志 2020年第5期27卷 294-294页

作者： park KJ 方三高(译) 魏建国(校) 不详重庆医科大学附属第三医院浙江省绍兴市人民医院

宫颈腺癌(ECA)是一组病因、分子驱动因素及形态不同,对治疗的反应和预后各异的肿瘤。HPV筛查及疫苗时代,适当的分类对患者管理至关重要,国际宫颈腺癌标准和分类(IECC)率先突破基于传统形态学的WHO分类,根据高倍镜下HPV相关形态学存在,... 详细信息

宫颈腺癌(ECA)是一组病因、分子驱动因素及形态不同,对治疗的反应和预后各异的肿瘤。HPV筛查及疫苗时代,适当的分类对患者管理至关重要,国际宫颈腺癌标准和分类(IECC)率先突破基于传统形态学的WHO分类,根据高倍镜下HPV相关形态学存在,即有无易于识别的腔缘顶端"漂浮"核分裂和/或凋亡小体,将ECA分为HPV相关性(HPVA)及非HPV相关性(NHPVA)腺癌。该分类简单、实用、可重复,与免疫组化和原位杂交结果高度一致,具有重要临床意义,为过去50年妇科病理学最重要的进展。

关键词：高倍镜宫颈腺癌形态学 WHO分类原位杂交核分裂病理学 HPV

Fast velocity analysis by wave path migration

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Fast velocity analysis by wave path migration

比较使用钆塞酸二钠与钆喷酸葡胺进行MRI增强检查时的短暂剧烈运动:改良屏气技术的影响

中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： Yike Liu~(1*++),Hongchuan Sun~(2++) and Xu Chang~1 1 Institute of Geology and Geophysics,Chinese Academy of Sciences,100029 Beijing,China,and 2 Veritas DGC Inc.,10300 Town park Drive,Houston,TX 77072,USA Formerly at Department of Geology and Geophysics,University of Utah,Salt Lake City,UT 84112,USA

Iterative migration velocity analysis is computationally expensive,where most of the computation time is used for generating prestack depth *** using a reduced form of Kirchhoff migration,denoted as wave path migration,we can significantly speed up the depth imaging process and reduce the entire velocity analysis expense *** results with 2D synthetic and field data show that wave path migration velocity analysis can efficiently improve the velocity model and the wave path migration velocity analysis updated velocity correlates well with that from the Kirchhoff migration velocity *** central processing unit comparison shows that,for a 2D synthetic and field data set,wave path migration velocity analysis is six times faster than Kirchhoff migration velocity *** efficiency should be even greater for 3D data.

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国际医学放射学杂志 2018年第3期 363-363页

作者： J.S.Song E.J.Choi E.H.park J.H.Lee 贺思健 Department of Radiology Chonbuk National University Medical School and Hospital

摘要目的比较使用钆塞酸二钠与钆喷酸葡胺进行MRI增强检查时短暂剧烈运动(TSM)的发生率以及钆塞酸二钠MRI增强检查有无应用改良屏气技术时的TSM发生

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Photometric measurements of spring aerosol optical properties in dust and non-dust periods in China

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Photometric measurements of spring aerosol optical propertie...

广泛性焦虑障碍量表(GAD-7)在中国癫痫患者中的检验

“2010年北京气象学会中青年优秀论文评选”学术研讨会

作者： Wupeng Du~a,Jinyuan Xin~a,Mingxing Wang~a,Qingxian Gao~b,Zhanqing Li~c,Yuesi Wang~(a,*) a Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,PR China b Chinese Research Academy of Environment Science,Beijing 100012,PR China c Department of Meteorology,The University of Maryland,College park,MD 20782,USA

Aerosol observational data spanning three years(2005-2007) from the Chinese Sun Hazemeter Network(CSHN) were analyzed to characterize the optical properties of spring aerosol particles in dust and non-dust weather *** measurements were segregated and the dates of dust period were chosen by ground-based observations and the National Sand-dust Weather *** data obtained under suitable weather conditions and averaged over 15 sites in the *** data indicated that the mean spring aerosol optical depth(AOD) increased by 33%in dust weather than in non-dust weather over the three years under ***,the angstrom exponent(α) decreased by 24%in dust weather compared to in non-dust *** dust-source sites, AOD increased by 31%andαdecrease by 20%.The atmosphere of dust-source sites is relatively clean,and is generally only contaminated with small quantities of dust particles. Atmospheric aerosols of this region were primarily in the form of coarse *** from being influenced by dust storms,the atmosphere of both near-source and distant sites displayed a large proportion of man-made aerosols,resulting in a large increase in the AOD andα*** to the contribution of sand-dust,the AOD of near-source and distant sites increased by 53%and 23%,respectively,while the value ofαwas reduced by 22%and 25%,*** to the content differences of man-made aerosols,and the fact that some observational data cannot be obtained under heavy dust storm weather conditions, the mean AOD andαwere highest at distant sites(0.69 and 0.91),intermediate at nearsource sites(0.51 and 0.86),and lowest at the dust-source sites(0.36 and 0.48).In addition, if we take into account the impact of strong dust storms in which AOD can’t be observed by sunphotometer,the AOD probably become greater the farther form the dust-source region in non-dust periods,and while it is opposite in dust *** were also obtained for both urban and ecology background s

关键词： Optical properties Dust weather Non-dust weather Aerosol optical depth(AOD) Angstrom exponent(α)

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癫痫杂志 2016年第5期2卷 469-469页

作者：童馨安东梅 McGonigal A park SP 周东四川大学华西医院神经内科成都610041 Aix Marseille Université InsermINS UMR_S 1106CHU TimoneService de Neurophysiologie CliniqueAssistance Publique des H?pitaux de MarseilleMarseille 13005France Department of Neurology School of MedicineKyungpook National UniversityDaeguSouth Korea

背景癫痫患者中合并焦虑障碍的比例约11%~50%,远高于未患癫痫者.合并焦虑的癫痫患者会出现更多抗癫痫药物(AEDs)副作用和更多认知困难,生活质量更差,发作控制也更差,有着更高的自杀风险、更高的住院率,和更重的经济负担.对癫痫合并焦虑... 详细信息

背景癫痫患者中合并焦虑障碍的比例约11%~50%,远高于未患癫痫者.合并焦虑的癫痫患者会出现更多抗癫痫药物(AEDs)副作用和更多认知困难,生活质量更差,发作控制也更差,有着更高的自杀风险、更高的住院率,和更重的经济负担.对癫痫合并焦虑的早期诊断和适当管理对于提高患者生活质量至关重要.广泛性焦虑障碍量表(Generalized anxiety disorder-7,GAD-7)是一种筛工具,用于在初级保健患者中筛查广泛性焦虑障碍.

关键词：检验药物抗癫痫患者癫痫障碍量表