نتایج جستجو برای: jet and wake effect
تعداد نتایج: 17131105 فیلتر نتایج به سال:
In 1996 a major radio flux density outburst occurred in the broad-line radio galaxy 3C 111. It was followed by a particularly bright plasma ejection associated with a superluminal jet component, which has shaped the parsec-scale structure of 3C 111 for almost a decade. Here we present results from 18 epochs of Very Long Baseline Array (VLBA) observations conducted since 1995 as part of the VLBA...
The chronotype, which reflects the circadian rhythm preferences of individuals in their daily activities and sleep-wake cycles, can be considered on a dimension extreme morningism eveningism. Individuals with morning evening chronotypes face many physical psychological dangers due to accumulated sleep debt, short total time insufficient efficiency. In chronotypes, especially people, social jet-...
for most people iterance to hospital is a disturbing experience and expects that nurses be sensitive to patient's physical, emotional and social need at admission. whereas interrupt of sleep due to physical, psychological and social status damage, knowing about effective mechanisms in retention and disturbance of sleep – wake cycles help nurses to make natural criteria for their patient&ap...
Direct numerical simulations are performed to predict the three-dimensional unsteady flow interactions in the near-field of a square jet issuing normal to a cross-flow. The simulated flow features reveal the formation of an upstream horseshoe vortex system, which is the result of an interaction between the oncoming channel floor shear layer and the transverse jet; the growth of a sequence of Ke...
abstract the following study, in the first place, attempted to examine the effect of less experienced teachers participation in experienced teachers classes on their own skills and teaching methodology, in the second place, attempted to find out the role of teachers training in students achievements. for this purpose, 21 efl teachers were selected according to available sampling in kish l...
We review next-to-leading order calculations of oneand two-jet production in ep collisions at HERA for photon virtualities in the range 1 < Q < 100 GeV. Soft and collinear singularities are extracted using the phase space slicing method. Numerical results are presented for HERA conditions with the Snowmass jet definition. The transition between photoproduction and deep-inelastic scattering is s...
the research questions were as follows: 1. is there any relationship between the students concious awareness of the form and implications of the conjuncations and their improvement in using appropriate conjunctions? 2. does students knowledge of the from and the implications of the conjunctions help them to produce more coherent writings. 3. does a comparison between english conjunctions and th...
Since double-suction centrifugal pumps consume quantities of energy, revealing critical factors for energy dissipation is helpful energy-saving design. This study aims to investigate the relationship between and vortex based on Rortex method in a pump. Detached eddy simulation was applied obtain flow field. Enstrophy used present strength local rigid shear. The results indicate that shear domin...
In this study, we employed a four-hole cobra probe to measure the wake characteristics of rec-tangular bridge tower model in wind tunnel. The scale was 1:30, and Reynolds number varied from 1.38 × 105 2.27 by changing yaw angle. A measurement plane with 9 19 points horizontally set at middle height behind model. test without control, i.e., baseline case, first tested angle range 0° 90°; then, f...
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...
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