نتایج جستجو برای: flow accumulation
تعداد نتایج: 625531 فیلتر نتایج به سال:
Previous research has shown that local scour at bridge piers is severely increased by the accumulation of woody debris around piers. However, due to unavailability accurate information regarding characteristics formed jams, shape and dimensions accumulations tested in previous laboratory experiments have had be assumed. This article provides an assessment debris-induced based on recently availa...
Introduction Calcareous soils are widely distributed in arid and semi-arid regions of the world and the presence of carbonates in the soils affects both physicochemical properties and the pedogenic evolution. In addition, soil carbon plays a critical role in the global carbon cycle, and pedogenic carbonates are an important sink for atmospheric carbon. Pedogenic carbonates are also the proxy o...
The hydrodynamic studies of fluidized bed reactor has been reported in terms of pressure drop, minimum fluidization velocity and bed volume expansion to contribute to the optimization of the CNTs production parameters in fluidized bed reactors. Minimum fluidization velocity and pressure drop, as the most important parameters, were taken into account for the investigation of the hydrodynamic beh...
In this study, the preparation of 111In-Bleomycin complex was optimized for temperature, time, concentration and pH during several experiments. The results showed that by the addition of bleomycin to 111In-InCl3 sample (dried under flow of N2) and heating the mixture up to 90-100°C the radiopharmaceutical can be obtained in 99.5% yield and a specific activity of 1.745 Ci/mmol. The final s...
0019-1035/$ see front matter 2012 Elsevier Inc. A http://dx.doi.org/10.1016/j.icarus.2012.03.010 ⇑ Corresponding author. E-mail address: [email protected] (J.W. Hea Evidence has accumulated that non-polar portions of Mars have undergone significant periods of glaciation during the Amazonian Period. This evidence includes tropical mountain glacial deposits, lobate debris aprons, lineated vall...
we report a three-phase bone scintigraphy for the diagnosis of a peripheral bone lesion caused by systemic sarcoidosis. a 32-year-old man with suspected osteomyelitis of the right forefinger underwent three-phase bone scintigraphy with tc-99m hydroxymethylene diphosphonate (hmdp) and single-photon emission computed tomography/computed tomography (spect/ct). the lesion was rich in blood flow acc...
Water displacing oil is one of the main emptying methods for mobile pipelines. It has advantages being a simple process and highly safe. At present, determination water scheme pipelines based on oil–oil alternating transport theory product However, insolubility phase results in great difference between flow characteristics pipeline. In addition, due to effect buoyancy, gathers at high point pip...
In this paper, we provide an overview of the relationship between international migration and international trade as well as capital movements. After taking a brief historical perspective, we first investigate migration flows between two countries in a static, neoclassical context. We allow for a disaggregated view of migration that distinguishes between different types of labor and emphasizes ...
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