نتایج جستجو برای: and quaternary alluvial q moreover
تعداد نتایج: 16851541 فیلتر نتایج به سال:
implicit and unobserved errors and vulnerabilities issues usually arise in cryptographic protocols and especially in authentication protocols. this may enable an attacker to make serious damages to the desired system, such as having the access to or changing secret documents, interfering in bank transactions, having access to users’ accounts, or may be having the control all over the syste...
Based on the identified typomorphic features of placer gold, a set determined morphogenetic criteria is proposed to identify genesis gold content and different sources in platform areas, which allow more correctly selecting search methods improving efficiency forecasting ore deposits. Gold particles larger than 0.25 mm with signs wind-worn processing indicate formation autochthonous aeolian pla...
Rivers around the world are being regulated by dams to accommodate the needs of a rapidly growing global population. These regulatory efforts usually oppose the natural tendency of rivers to flood, move sediment, and migrate. Although an economic benefit, river regulation has come at unforeseen and unevaluated cumulative ecological costs. Historic and contemporary approaches to remedy environme...
The Sibari Plain (northeastern Calabria) shows a well-developed stair of late Quaternary marine/coastal terraces resulting from the interaction between sea level fluctuations and tectonic uplift. This paper (i) provides stratigraphic description terraced deposits Raganello Coscile rivers, (ii) assesses relative controls eustacy uplift on staircase formation, (iii) unravels morphosedimentary evo...
The juxtaposition of natural levees results in alluvial ridges with a unique fluvial record. Our aims were to (1) identify the Upper Tisza (Hungary); (2) determine their morphological characteristics; and (3) reconstruct Late Quaternary history region. oldest paleo-meander was abandoned ca. 29 ka ago; referring early avulsion Tisza. Five identified intensive activity at 12-13 ka, 7.7-8.6 6.1-6....
the debate whether esp teachers need to have knowledge of the specialized field they are teaching has been an issue in the literature over the last two decades. the aim of conducting this study was to explore iranian learners’ and instructors’ beliefs and attitudes concerning the role of specialized knowledge in teaching esp classes. a seventeen item questionnaire was administered to 400 esp le...
Nowadays the use of remote sensing and Geographic Information System (GIS) is one of the most powerful cost effective tools to identify and discover the available groundwater resources. In this paper, Lithological Units, Lineaments, Slope, Topography, Drainage density, Vegetation and Isohyets lines have been achieved by stations and through remote sensing and GIS techniques. All layers of diffe...
Clay mineralogy of paleosols provides more information about Quaternary climatic changes and paleoenvironmental conditions. Clay minerals of an alluvial fan in eastern Isfahan were studied, using x-ray diffraction analysis. Studied paleosols are located on old Qf1 and Qf2 geomorphic surfaces. Qf1 geomorphic surface is older and topographically higher than Qf2. The results of clay mineralogy sho...
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