نتایج جستجو برای: aggregation material bed and coasts
تعداد نتایج: 16884236 فیلتر نتایج به سال:
In this study, the relationship between annual sunspot number (ASN) and annual precipitation totals (APT) has been investigated over the northern coasts of the Persian Gulf and Oman Sea by using two statistical methods: contingency tables and cross-correlation function. Only Bushehr and Jask stations (270 mm and 140 mm mean APT) have long term monthly precipitation records started instrumentall...
The smooth clam Callista chione (Linnaeus, 1758), is distributed on sandy bottoms throughout the Mediterranean Sea and European Atlantic coasts over 0-180 m depth range (SALAS, 2011). This species is of great commercial interest in Spain, and is intensively exploited along the Catalan coast (DOGC, 2008). Catches have dramatically decreased over the recent years, threatening the biological and e...
in civil engineering concrete is a material combined of hydraulic cement, sand, gravel and water. gravel and sand compose 60 to 70 percent of concrete. these aggregates support compression force of concrete. cement paste acts as glue to stick grain together. in bushehr factories producing aggregates do not operate according to astm standards, so that fineness modulus (fm) of the produced sands ...
Sound and pressure wave propagation in a granular material is of interest not only for its intrinsic and practical value, but also because it provides a non-intrusive means of probing the state of a granular material. By examining wave speeds and attenuation, insight can be gained into the nature of the contacts between the particles. In the present paper, wave speeds and attenuation rates are ...
Median grain sizes on riverbeds range from boulders in uplands to silt in lowlands; however, rivers with ~1–5mm diameter bed sediment are rare. This grain size gap also marks an abrupt transition between graveland sand-bedded reaches that is unlike any other part of the fluvial network. Abrupt gravel-sand transitions have been attributed to rapid breakdown or rapid transport of fine gravel, or ...
Background: Since, energy consumption per square meter in hospitals is much higher than other types of service institutions; in this study, some actions performed toward optimizing energy consumption improvement projects based on the definition and prioritization in hospital. Materials and Methods: The necessity of optimizing energy consumption in hospitals were described according to so...
To investigate the relationships between local platelet activation in pulmonary vessels and pulmonary artery pressure circulating platelet aggregates and plasma beta-thromboglobulin (beta-TG) levels were evaluated in peripheral venous blood and blood from different sites of pulmonary circulation (right ventricle, pulmonary artery and arteriolo-capillary bed) in 29 patients with COPD. Fifteen ha...
Marine brown macroalgae are an important part of the tidal coaste flora in Bushehr province with rocky, coral and sandstone beds. Brown seaweeds need a solid and stable support (natural or artificial) to be attached algae holdfasts to the them, ensuring their establishment for growth, multiplication and development against violent waves. Because of this, most macroalgae are not able to grow on ...
within communicative, interactive, and learner-centered framework of language teaching and learning, students need to learn four skills of listening, speaking, reading, and writing for their educational success. but of all the language skills, reading enjoys a paramount significance in so many second or foreign language academic contexts. in spite of its importance, language learners still have...
while ignoring income distribution and estimating aggregate demand generally leads to aggregation bias and thus, does not reflect households’ demand properly, yet aggregation bias is rarely considered in empirical demand studies and simply is ignored in most cases. the objective of the present study is to estimate aggregation bias in households’ demand for various types of meats and to evaluate...
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