نتایج جستجو برای: geographic region
تعداد نتایج: 600232 فیلتر نتایج به سال:
Background: Basal cell carcinoma (BCC) is a non-invasive skin cancer, with exposure to ultraviolet radiation and changes in the PTCH gene as its important etiologies. Other risk factors include genetic, age, sex, skin color, sun exposure levels, occupations and other carcinogens. Materials and methods: In this study, patients with skin cancers managed in Loghman Hospital during a 7 year perio...
Cluster detection for a set P of n points in geographic situations is usually dependent on land cover or another thematic map layer. This occurs for instance if the points of P can only occur in one land cover type. We extend the definition of clusters to regionrestricted clusters, and give efficient algorithms for exact computation and approximation. The algorithm determines all axis-parallel ...
The geographic distribution of Astragalus L. (Fabaceae) was analyzed using a database of 12377 geo-referenced observations. In the old world (including Asia, Africa and Europe) there are ca. 2900 euploid species classified in 166 distinct sections. In this study using geographic information system (GIS) by means of DIVA-GIS (ver. 4) distribution map of some more important sections in the old wo...
the caspian sea contains great resources of oil and gas. the caspian sea is a 700- mile- long body of water in central asia, land located between azerbaijan, iran, kazakhstan, russia and turkmenistan. iran was challenges and opportunities in the caspian region. key question in this thesis includes three section that first question, opportunities of iran in the caspian region, second question ch...
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