排序方式： 共有11条查询结果，搜索用时 31 毫秒
1.
选取123例乳腺病理性矿化样品,利用光镜、扫描电镜对乳腺矿化进行了微形貌分类研究,并利用统计学方法探讨了乳腺矿化集合体类型与患者年龄、乳腺病变类型和癌变阶段的相关性。研究发现,根据乳腺矿化在光学显微镜下的可分辨形态,将其分为两种类型:粒状集合体与块状集合体;其中粒状集合体为小于200μm的规则粒状钙化,少部分有环带结构,和有机组织结合紧密;而块状集合体则为大于200μm的片状钙化,形状不规则。统计分析数据显示,随年龄增加,块状集合体出现病理比例增加,粒状集合体出现病理比例减少,敏感年龄分区界限为50岁;粒状集合体在50岁以上和50岁以下患者中单独出现的概率分别为24%和53%;块状集合体在乳腺原位癌(71. 4%)患者中占主导,粒状集合体在乳腺纤维腺瘤(64. 5%)患者中占主导。该研究可为未来乳腺癌的诊断提供基于乳腺矿化精细矿物学特征的辅助新方法。 相似文献
2.
Luca Muscarà 《GeoJournal》2001,52(4):285-293
At a time when human geography–in its search for general and systemic laws–was often seduced by different kinds of determinism, Jean Gottmann developed his theoretical model in order to explain the political partitioning of geographical space. This model, shaped by the study of the classics in political philosophy, makes explicit reference to human psychology, and is based on a few fundamental concepts: cloisonnement (partitioning), circulation (movement), carrefour (crossroad) and iconographie (iconography). This paper presents the above mentioned concepts through a chronological analysis of their formulation in different chapters of Gottmann's bibliography, in order to reconstruct the genesis and evolution of his model. In the conclusions a few questions are presented, that suggest how Gottmann's model could still be usefully applied to contemporary human and political geography. 相似文献
3.
《Urban geography》2013,34(4):297-329
This paper examines recent proposals for memorials and monuments on the National Mall in Washington, DC. Demands for memorials are increasingly at odds with the Mall's important role as open green space and public protest space. This article analyzes the broader issues embodied in the competing purposes of this highly visible public space by considering the recent controversy over the World War II Memorial. The controversy focused primarily on the location of the memorial. Opponents contended the World War II Memorial would interrupt or destroy the iconography of the National Mall. Supporters argued that the location selected for the memorial was consistent with its importance in U.S. history and that it deserved such a prized location in the central axis between the Lincoln Memorial and the Washington Monument. The article then analyzes the politics behind the site selection, and examines the debate about the impact of the memorial's location. It concludes that the location of the memorial was not accidental but intentional, and thereby reveals a purposeful re-writing of the Mall's symbolic space to suit a specific vision of the war and its meaning in American history. The article also contends that the location of the memorial represents an emerging social-political agenda that is prioritizing the Mall as a place of commemoration at the expense of open space, and, perhaps, at the expense of public protest space. 相似文献
4.
William Wyckoff 《The Professional geographer》2013,65(1):122-124
Loblolly pines in Texas and Louisiana exhibit different reactions to moisture extremes, as indicated by the susceptibility of weakened individuals to attack by southern pine beetles. In Texas, intense insect outbreaks among pines occur during periods of extreme moisture surplus, whereas extreme moisture deficits render the Louisiana pines susceptible to attack. Intraspecies tree reponse to moisture extremes therefore appears to be spatially variable and partially dependent upon the frequency occurrence of severe climatic conditions. 相似文献
5.
Arnon Golan 《Urban geography》2013,34(5):721-734
In this article, I analyze Tel Aviv’s Rothschild Boulevard as an example of an urban symbol and suggest that while main streets, avenues and boulevards are usually perceived as integral parts of the urban symbolic ecology, they are rarely considered as exclusive urban icons in their own right. Although prestige of “privileged” streets influences reputations of cities and constitutes an important part of their imaginary, their complicated physical structure and multifunctional character conflict with their iconic status. The physical nature of streets resists configuration and articulation as exclusive, durable urban icons because symbols are generally conspicuous physical objects that can be directly interpreted and rendered as iconic. 相似文献
6.
Herman van der Wusten 《GeoJournal》2001,52(4):339-344
Stalin and Hitler planned major changes in the townscapes of their capital cities. These plans were part of their effort to install highly mobilized despotic regimes that needed a wide-ranging set of symbols to focus allegiance and to impress awe. These plans remained to some extent paper exercises but part of it left significant traces in the contemporary cities, particularly in Moscow. The intended changes showed similarities in their megalomania expressed in plans for a gigantic dome surrounded by a huge public square in the core of the city. There were also differences as regards the type of symbols used due to both dictotors' different roles within their regimes, the degree of didactic intent due to the nature of the commanding ideologies and the level of modernization of both countries, and the diverging versions of antimodernist building style (which they shared with many others elsewhere at the time). 相似文献
7.
Yasuo Miyakawa 《GeoJournal》2001,52(4):345-352
Our world is very fluid, very complex, constantly moving, made up of a great number of interdependent components. Therefore, the locus and the orbit of a particular area play an important role in geography and in politics. The purpose of this study is to examine the iconography of orbit and freedom of movement through an analysis of the transformation of the international politico-economic structure and its impact on Japan and to make clear the footsteps of Jean Gottmann on political geography. Due to its locus being on the crossroad of international power struggles, Japan had accepted different iconographies of orbits every time she faced great mutation in her history. This, in turn, accelerated the synchronism, synergism and synthesis of different iconographies that came to converge at the crossroad. The integration of imported cultures with the Japanese traditional culture promoted the transformation of Japanese society and community to emphasize the freedom of movements. The flexibility of Japanese society and the unifying iconography of Japanese community have enabled Japan to adapt and readapt to changing politico-economic phases. Interested in the relationship between freedom of movement and iconography, Jean Gottmann spent a considerable portion of his academic life inquiring into the changing dynamics of Japanese iconography on the global scene. After a quarter-century pursuit, he contributed to the establishment of political geography in Japan. 相似文献
8.
Stanley D. Brunn 《GeoJournal》2001,52(4):315-323
Stamps are products or `windows' of the state that illustrate how it wishes to be seen by its own citizens and those beyond its boundaries. The topics of the first issues reveal what messages the state considers most important. The first issues from nineteen new East European and Central Asian states illustrate the importance of maps, flags, coats of arms and prominent religious and political symbols; overt propaganda and ideology were lacking. 相似文献
9.
Nano Ruzin 《GeoJournal》2001,52(4):353-357
The authority of Marshall Tito and his newly crafted iconography of `brotherhood and unity' temporarily marginalized the ethnic deographies of the peoples in the Yugoslav Federation. In the 1990s this Yugoslavia was run over by time. The Republic of Macedonia was among the newly emerging states. In Macedonia the multi-ethnic mosaic was complicated by the confusion of old and new iconographic impulses. In 2001 the Macedonian crisis developed as a result of the spread of the new regional Albanian identity spread by the domino effect to the areas with mixed population in the Balkans after the events in Kosovo. Differences between Macedonians and Albanians are analyzed in terms of family structure, religion and ethnic and national affiliation. The politics based on these cleavages and their ensuing, contested iconographies are set out. 相似文献
10.
Teaching Controversial Topics: Iconography and the Confederate Battle Flag in the South 总被引：1，自引：1，他引：0
《The Journal of geography》2012,111(4-5):229-240
Abstract This article examines various strategies for teaching controversial topics. As a case study, I present examples from my experience teaching about the cultural/political geographic concept of iconography in southern classrooms using as an example recent debates over whether governments in the region should sanction the flying of the Confederate battle flag. First, I discuss the recent literature on the teaching of controversial issues. Second, I examine the concept of iconography and the debates over flying the flag. Third, I present different strategies that can be used to approach this controversial icon in a classroom setting. I conclude by arguing that there is no perfect solution to the teaching of controversial topics that will succeed for every topic, irrespective of time and place. 相似文献