检索结果-南通市图书馆

Sexual dimorphism in cranial shape and size in geomyoid rodents:multivariate and evolutionary perspectives

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2022年第4期68卷 469-487页

作者： Jonathan J m Calede Andrew Brown Department of Evolution Ecologyand Organismal BiologyThe Ohio State University318 W.12th Ave.300 Aronoff LaboratoryColumbusOH 43210USA The Ohio State University at marion 1459 Mount Vernon AvenueMarionOH 43302USA College of Veterinary medicine Texas A&M University660 Raymond Stotzer PkwyCollege StationTX 77843USA

Geomyoid rodents provide a great study system for the analysis of sexual *** are polygynic and many inhabit harsh arid environments thought to promote sexual *** fact,there has been extensive work published on the sexual size dimorphism of individual populations and species within this rodent ***,little work has been undertaken to assess the evolutionary patterns and processes associated with this sexual *** use multivariate analyses of cranial measurements in a phylogenetic framework to determine the distribution of size and shape dimorphism among geomyoids and test for Rensch’s *** results suggest that sexual dimorphism is more common in geomyids than heteromyids,but it is not in fact *** is evidence for variation in sexual dimorphism across ***,in many taxa,geographic variation appears to overwhelm existing sexual *** find support for the repeated independent evolution of shape and size dimorphism across geomyoid taxa,but we do not find support for an association between size and shape *** is no evidence for Rensch’s rule in geomyoids,whether at the superfamily or family ***,our findings suggest that there is no single explanation for the evolution of sexual dimorphism in geomyoids and that,instead,it is the product of numerous evolutionary *** studies incorporating phylogenetic relationships will be necessary to paint a more complete picture of the evolution of sexual dimorphism in geomyoids.

关键词： Geomyidae Heteromyidae phylogenetic comparative methods morphometrics Rensch’s rule

Combined analysis of land cover change and NDVI trends in the Northern Eurasian grain belt

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Earth Science 2012年第2期6卷 177-187页

作者： Christopher K. WRIGHT Kirsten m. de BEURS Geoffrey m. HENEBRY South Dakota State University Geographic Information Science Center of Excellence (GIScCE) Brookings South Dakota 57007 USA The University of Oklahoma Department of Geography and Environmental Sustainability Norman OK 73019 USA

We present an approach to regional environ- mental monitoring in the Northern Eurasian grain belt combining time series analysis of mODIS normalized difference vegetation index （NDVI） data over the period 2001-2008 and land cover change （LCC） analysis of the 2001 and 2008 mODIS Global Land Cover product （mCD 12Q 1）. NDVI trends were overwhelmingly negative across the grain belt with statistically significant （p ≤0.05） positive trends covering only 1% of the land surface. LCC was dominated by transitions between three classes; cropland, grassland, and a mixed cropland/natural vegeta- tion mosaic. Combining our analyses of NDVI trends and LCC, we found a pattern of agricultural abandonment （cropland to grassland） in the southern range of the grain belt coinciding with statistically significant （p≤0.05） negative NDVI trends and likely driven by regional drought. In the northern range of the grain belt we found an opposite tendency toward agricultural intensification; in this case, represented by LCC from cropland mosaic to pure cropland, and also associated with statistically significant （p≤0.05） negative NDVI trends. Relatively small clusters of statistically significant （p ≤ 0.05） positive NDVI trends corresponding with both localized land abandonment and localized agricultural intensification show that land use decision making is not uniform across the region. Land surface change in the Northern Eurasian grain belt is part of a larger pattern of land cover land use change （LCLUC） in Eastern Europe, Russia, and former territories of the Soviet Union following realignment of socialist land tenure and agricultural markets. Here, we show that a combined analysis of LCC and NDVI trends provides a more complete picture of the complex- ities of LCLUC in the Northern Eurasian grain belt,involving both broader climatic forcing, and narrower anthropogenic impacts, than might be obtained from either analysis alone.

关键词： land cover change mODIS NDVI NorthernEurasian grain belt Kazakhstan Russia time seriesanalysis Ukraine

“Where Angels Fear to Tread, Fools Will.” Who Is in Control of Your Sexual Health? A Discursive Examination of Self-Surveillance in an HIV and AIDS Prevention Campaign

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Language and Semiotic Studies 2018年第4期4卷 65-83页

作者： Irene m.m.Segopolo University of Botswana Botswana

The global community witnessed vigorous and aggressive campaigns in the past three decades since the advent of HIV and AIDS. Various strategies have been used in this regard in order to advocate safer sex practices among the youth. The article argues that although three decades later, HIV infections are reported to be declining in the regions that were worst hard hit, specifically southern Africa, and there is still a need to promote condom-use among youth aged between 15 and 25. Through text and reception analysis, the article examines discourses of sexual self-responsibility in a purposively selected poster(advocating condom-use) from a host of HIV and AIDS prevention posters and banners advocating HIV and AIDS prevention in 2006-2009, from the University of KwaZulu-Natal, South Africa. Informed by Foucault's notion of the "panoptic gaze" and "techniques of the self", an in-depth textual analysis of the posters is conducted. norman Fairclough's CDA, augmented by Thompson's ideologies and Kress and van Leeuwen's The Grammar of Visual Design, are used to reveal the language and visual strategies used by the originators of the posters to reveal risk governmentality that may be subsumed in the interplay between the verbal and non-verbal features used in the texts. Furthermore, Hall's reception theory is employed to reveal responses of the students through Focus Group Discussions. The article analyses the discursive self "I" and the second-person deictic pronoun "You" as strategies employed by the campaigns to promote self-surveillance and individual agency. The article argues for continued efforts in condom promotion to reduce HIV infections and while doing so, for the inclusion of youth in designing prevention messages.

关键词： risk self responsibility discourse analysis panoptic gaze

在线全文

学校读者我要写书评

暂无评论

石油开采中的界面现象

贵州锦丰(烂泥沟)超大型金矿床构造解析及构造成矿作用

1994年

作者：（墨）莫罗（morrow norman R.）鄢捷年等译

书名原文:Interfacial phenomena in petroleum recovery:叙述了近十几年来有关渗流物理及界面现象基础理论和方法的最新进展,介绍了一些对驱替加深了解的方法,并通过岩心分析来了解油藏状态。

ISBN: (纸本)7502109951

关键词：石油开采界面学科:研究

来源：汇雅图书（南通市图书馆... 评论

在线全文

汇雅图书（南通市图书馆）

学校读者我要写书评

暂无评论

矿床地质 2007年第4期26卷 380-396页

作者：陈懋弘毛景文 Phillip J.Uttley Tony norman 吴六灵郑建民秦运忠中国地质科学院矿产资源研究所北京100037 Sino Gold mining Limited 中国地质大学北京100083 广西地勘局271地质队广西临桂541100

在矿区大比例尺填图的基础上,运用构造解析的理论和方法,对贵州锦丰(烂泥沟)金矿的构造特征、构造演化和构造控矿作用进行了系统的阐述。矿区构造线主要分为近NS向、NW向和NE向3组,其中NW向构造线控制了矿区的构造格架。构造变形主要经... 详细信息

在矿区大比例尺填图的基础上,运用构造解析的理论和方法,对贵州锦丰(烂泥沟)金矿的构造特征、构造演化和构造控矿作用进行了系统的阐述。矿区构造线主要分为近NS向、NW向和NE向3组,其中NW向构造线控制了矿区的构造格架。构造变形主要经历了同生期裂陷、造山期挤压、后碰撞造山侧向挤压和岩石圈伸展等4个阶段。盆地裂陷期间(D2-T2)形成的同生断层为后续的构造活动提供了最初的构造薄弱面,并成为主要的热液通道;造山期挤压期间(T3)形成了矿区最为明显的近NS向和NW向大型倒转褶皱和逆冲断层以及配套的NE向右旋走滑断层;后碰撞造山侧向挤压期间(J1)形成走向NE的叠加褶皱,并在F2-F3"X"型断裂系上形成近EW向的拉张区,矿质沿着拉张的空间沉淀就位;燕山期(J2-K)岩石圈伸展,形成小规模的近水平逆断层。上述4个主要构造变形阶段与右江盆地的裂陷-闭合-坍塌的发展演化历史相吻合,成矿发生在由挤压向拉张过渡的构造体制转换阶段。造山期逆冲作用形成的构造闭圈和后碰撞造山期间挤压向伸展转变的过程中形成的局部张性构造环境是矿质得以大量聚集、沉淀的主要构造控制因素。构造成矿作用是锦丰(烂泥沟)金矿单一矿体垂向延深1000m以上的主要制约因素。构造成矿的观点将为在滇黔桂"金三角"卡林型金矿带的深部找矿提供重要的理论依据。

关键词：地质学后碰撞造山构造成矿卡林型金矿锦丰(烂泥沟)金矿贵州

Expression of intercellular adhesion m olecule-1and H L A-D R antigens in uveitis

在线全文

学校读者我要写书评

暂无评论

吉林大学学报(医学版) 1999年第4期25卷 393-395页

作者： Li Xu 1,Wang Guiyun 1,Zhang Xiaoguang 1,Sui Guiqin 2 (1 Department of Ophthalmology,The Second Clinical College,norman Bethune University of medical Sciences,Changchun 130041 2\ Jilin Dispensary of Ophthalmopathy) \ \ 白求恩医科大学第二临床学院吉林

目的：研究细胞间粘附分子１（ｉｎｔｅｌｌｕｌａｒａｄｈｅｓｉｏｎｍｏｌｅｃｕｌｅ１，ＩＣＡＭ１）和人体组织相关抗原（ｈｕｍａｎｌｅｕｋｏｃｙｔｅａｎｔｉｇｅｎ，ＨＬＡＤＲ）在葡萄膜炎免疫反应中的作... 详细信息

目的：研究细胞间粘附分子１（ｉｎｔｅｌｌｕｌａｒａｄｈｅｓｉｏｎｍｏｌｅｃｕｌｅ１，ＩＣＡＭ１）和人体组织相关抗原（ｈｕｍａｎｌｅｕｋｏｃｙｔｅａｎｔｉｇｅｎ，ＨＬＡＤＲ）在葡萄膜炎免疫反应中的作用。方法：应用免疫组织化学染色检查２０只正常眼和５４例葡萄糖膜炎眼球摘除眼（其中外源性３３例和内源性２１例）的脉络膜和视网膜组织中ＩＣＡＭ１和ＨＬＡＤＲ的表达。结果：正常眼的脉络膜和视网膜组织没有ＩＣＡＭ１的阳性染色，没有或较少有ＨＬＡＤＲ的表达，葡萄膜炎眼中二者有增高表达（Ｐ＜００１），而外源性和内源性葡萄膜炎眼组间表达统计学上无显著差异（Ｐ＞００５）。结论：ＩＣＡＭ１、ＨＬＡＤＲ分子能够介导白细胞和炎症部位组织细胞的识别和粘附，二者的共同表达说明它们在葡萄糖膜炎脉络膜视网膜组织的免疫性损伤中具有重要意义。

关键词：细胞间粘附分子1,葡萄膜炎,免疫组织化学,人体组织相关抗原

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Word Puzzle

疯狂英语（初中天地） 2003年第47期 33-33页

作者： norman

12345678★,l011★i2**★1314★l5★161718★1920★21★22提示: 横: 1.隐秘的;暗中的 8.艺术 9.干旱的:(土地)贫瘩的 1 0.乘游艇l过去式l 12.圆球体 13.灭亡;死去 15轿子 16“l___him__6”l“我是在6点钟遇见他的。”l句中应填上的第二... 详细信息

12345678★,l011★i2**★1314★l5★161718★1920★21★22提示: 横: 1.隐秘的;暗中的 8.艺术 9.干旱的:(土地)贫瘩的 1 0.乘游艇l过去式l 12.圆球体 13.灭亡;死去 15轿子 16“l___him__6”l“我是在6点钟遇见他的。”l句中应填上的第二个单词。 18.或者 19.学习21.“l__very__.”l“我很难过。”l句中应填上的第二个单词。 22(横,6)提示句中应填上的第一个单词。直: 1.说(单数动词) 2.设陷阱捕捉动物的人l复数l 3.蚀刻[过去式动词l 4.厕所 5.树l复数】 6二躲藏{过去式动词l 7.(长度单位)码l缩写l 11,预示某些事物的来临l复数动词l 14.野兔l单数l 15.因此:所以 1 7.黄色炸药l缩写】 20.(横21)提示句中应填上的第一个单词。slT2E3A扩扩H6Y7A8RT★A9RIDY10ACH 11TED★512PHERE★★*P13ERISH 14★515EDAN★A16T17d8R*L 19EA20RN*5 21AD★m 22ETWord Puzzle@norman

关键词：过去式 Word Puzzle

multivariate analyses of skull morphology inform the taxonomy and evolution of geomyoid rodents

在线全文

学校读者我要写书评

暂无评论

Current Zoology 2023年第4期69卷 456-474页

作者： Lily A.Noftza Jonathan J.m.Calede aBiology Program The Ohio State University at Marion1459 Mount Vernon AvenueMarionOH 43302USA Department of Evolution Ecologyand Organismal BiologyThe Ohio State University318 W.12th Ave.ColumbusOH 43210USA.

morphological analyses are critical to quantify phenotypic variation,identify taxa,inform phylogenetic relationships,and shed light on evolutionary *** work is particularly important in groups that display great morphological *** is the case in geomyoid rodents,a group that includes 2 of the most species-rich families of rodents in North America:the Geomyidae(pocket gophers)and the Heteromyidae(kangaroo rats,pocket mice,and their relatives).We assessed variation in skull morphology(including both shape and size)among geomyoids to test the hypothesis that there are statistically significant differences in skull measurements at the family,genus,and species *** sample includes 886 specimens representing all geomyoid genera and 39 *** used the geometric mean to compare size across *** used 14 measurements of the cranium and lower jaw normalized for size to compare shape among and within *** results show that skull measurements enable the distinction of geomyoids at the family,genus,and species *** is a larger amount of size variation within Geomyidae than within *** phylomorphospace analysis shows that the skull shape of the common ancestor of all geomyoids was more similar to the common ancestor of heteromyids than that of *** skulls display negative allometry whereas heteromyid skulls display positive *** heteromyids,dipodomyines,and non-dipodomyines show significantly different allometric *** analyses including fossils will be necessary to test our evolutionary hypotheses.

关键词： canalization convergent evolution Geomyidae Heteromyidae morphometrics phylomorphospace

疏浚物处理的技术管理对策:污染物检查及控制

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

交通环保 1992年第5期14卷 46-52页

作者： norman R.Franc ngus Jr. 鲍建国美国水道试验站

1.0引言1.1背景美国陆军工程师团(USACE)的一项基本任务就是维护美国联邦所辖40,000km以上的航海海峡及航道。因此,国家疏浚计划占国内土水工程施工及维护年预算的40%以上,包括花费450万美元疏浚和处理244万m^3以上的疏浚物,另外还有... 详细信息

1.0引言1.1背景美国陆军工程师团(USACE)的一项基本任务就是维护美国联邦所辖40,000km以上的航海海峡及航道。因此,国家疏浚计划占国内土水工程施工及维护年预算的40%以上,包括花费450万美元疏浚和处理244万m^3以上的疏浚物,另外还有批准由私人疏浚和处理的77万m^3疏浚物。

关键词：疏浚物检查及控制特殊污染物处理方式技术管理沉积物陆地中试实施对策初步评估