نتایج جستجو برای: geographical and topographical characteristics
تعداد نتایج: 16902296 فیلتر نتایج به سال:
PURPOSE. To determine the anatomical and topographic features of anterior posterior segments eye in primary angle closure (PAC) compare them with those suspects (PACs) controls. METHODS. This prospective study included 120 patients aged 41 to 80 years (60 eyes — PAC, 30 PACs, without ophthalmic pathology). The studied parameters spherical equivalent (SE), intraocular pressure (IOP), choroidal t...
the current status and distribution of the dragonflies (anisoptera) of pakistan were studied during 2005-2009. two dragonfly species were identified for the first time from pakistan. among these, rhodothemis rufa is a red, medium-sized dragonfly. lamelligomphus biforceps is also reported for the first time from pakistan and re-described owing to having minor taxonomic differences from that of f...
Demography and speciation history of the homoploid hybrid pine Pinus densata on the Tibetan Plateau.
Pinus densata is an ecologically successful homoploid hybrid that inhabits vast areas of heterogeneous terrain on the south-eastern Tibetan Plateau as a result of multiple waves of colonization. Its region of origin, route of colonization onto the plateau and the directions of introgression with its parental species have previously been defined, but little is known about the isolation and diver...
Exploratory studies have demonstrated the benefits of implementing Geographic Information Systems (GIS) technology in literary and cultural-historical research. These studies have done much to affirm the power and flexibility of GIS technology as a resource for humanities scholarship. At the same time, however, these studies share a common limitation in that they tend to rely on the analysis of...
Geographic Proximity, Trade and International Conflict/Cooperation This paper examines the interactive effect of distance and trade on international conflict and cooperation. The effect of geographic distance depends on trade, while the effect of trade varies with geographic distance. Trade reduces conflict to a greater extent when dyads are geographically close, but has a greater effect on coo...
Urban–rural integration zones are areas with the most prominent and complex contradictions in economic social, humanistic geographical, urban–rural contexts. Properly identifying such is essential for promoting integrated development rural revitalization efforts. In this study, symbiosis theory urban expansion employed to analyze identify spatial characteristics of main area Dalian City. Two di...
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