نتایج جستجو برای: submerged bodies

تعداد نتایج: 93654  

Journal: :تحقیقات آب و خاک ایران 0
امین قاسمی گروه مهندسی آبیاری و آبادانی دانشگاه تهران محمد حسین امید گروه مهندسی آبیاری و آبادانی دانشگاه تهران محسن نصرآبادی گروه مهندسی آبیاری و آبادانی دانشگاه تهران علی رئیسی استبرق گروه مهندسی آبیاری و آبادانی دانشگاه تهران

in this research, in order to develop new relationships with reasonable accuracy for estimation of the ‎submerged hydraulic jump characteristics, a study has been conducted experimentally. experiments have ‎been done in a rectangular channel with a length of 9 m, a width of 0.5 m and a depth of 0.45 m. froude ‎numbers in these tests range from 3.5 to 11.5 and between submergence ratios of 0.1 t...

2005
R. Norris Keeler Valery G. Bondur Carl H. Gibson

[1] Sea surface brightness anomalies caused by a municipal wastewater discharge are detected from space in areas much larger than their submerged turbulence source. The mechanism involves a complex interaction between currents, topography, tides, vertical and horizontal mixing, internal waves and stratified turbulence. Citation: Keeler, R. N., V. G. Bondur, and C. H. Gibson (2005), Optical sate...

Journal: :iranian journal of biotechnology 2013
sahar ansari basir khosrow adeli

context:micrornas (mirnas) are a class of short, endogenously-initiated, non-coding rnas that post-transcriptionally control gene expression via translational repression or mrna turnover. mirnas have attracted much attention in recent years as they play critical roles in gene expression and are promising tools with many biotech and therapeutic applications. the molecular mechanisms underlying t...

Journal: :international journal of maritime technology 0
saeed booshi 424 hafez avenue,, tehran-iran, mohammad javad ketabdari 424 hafez avenue,, tehran-iran,

in this paper wave transformation in a submerged sloped breakwater and its hydraulic performance was simulated by developing a numerical model in fortran. the code was established by combining porous flow and a two-phase model using vof method. modified navier-stokes and k-ε equations implemented to the model to simulate the flow in porous media. cut cell method was modified to simulate fluid t...

2011
Timothy D. Colmer Anders Winkel Ole Pedersen

BACKGROUND AND AIMS Wetland plants inhabit flood-prone areas and therefore can experience episodes of complete submergence. Submergence impedes exchange of O(2) and CO(2) between leaves and the environment, and light availability is also reduced. The present review examines limitations to underwater net photosynthesis (P(N)) by terrestrial (i.e. usually emergent) wetland plants, as compared wit...

Journal: :Acta biochimica et biophysica Sinica 2005
Ying Lu Yong-Rui Wu Bin Han

The glyoxylate cycle is a modified form of the tricarboxylic acid cycle that converts C2 compounds into C4 dicarboxylic acids at plant developmental stages. By studying submerged rice seedlings, we revealed the activation of the glyoxylate cycle by identifying the increased transcripts of mRNAs of the genes of isocitrate lyase (ICL) and malate synthase (MS), two characteristic enzymes of the gl...

2015
Beihan Jiang Kejun Yang Shuyou Cao Vanesa Magar

Based on the momentum transfer theory, an analytical model is proposed for the velocity and discharge distributions in compound channels with submerged vegetation on the floodplain. The partially vegetated channel was divided into three sub-regions, i.e. the main channel region, the floodplain region with submerged vegetation and the floodplain region without vegetation. For each region, the fo...

2017
Kan Shi Rui Tang Tao Huang Lu Wang Zhenqiang Wu

BACKGROUND Traditional submerged fermentation mainly accumulates intracellular orange pigments with absorption maxima at 470 nm, whereas extractive fermentation of Monascus spp. with Triton X-100 can promote the export of intracellular pigments to extracellular broth, mainly obtaining extracellular yellow pigments with absorption maxima at approximately 410 nm. In this study, a strain of Monasc...

2009
Masao ITOH

Speaking of a fully submerged hydrofoil craft, all the hydrofoils attached to the foilstruts of the craft body are fully submerged in the water, so that the disturbing wave forces acting on the hydrofoils are very small in their foilborne cruising compared with the forces on the surface piercing hydrofoils. Therefore, the fully submerged hydrofoil craft gives us a very comfortable riding. On th...

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