نتایج جستجو برای: labyrinth weirs

تعداد نتایج: 7497  

Journal: :iran agricultural research 2008
t. honar m. javan

side weirs are flow diversion devices that are widely used in irrigation, drainage and urban sewage systems. the present study focuses on the investigation of the effect of oblique side weirs on the discharge coefficient of a side weir under subcritical flow condition in rectangular channels. in this study 106 laboratory tests were conducted and the results were analyzed to find out the influen...

ژورنال: علوم آب و خاک 2014
مظلوم شهرکی, صادق, هنر, تورج,

Cylindrical and semi-cylindrical weirs are used in water distribution systems for flow measurement in open channels and for control of water surface. Review of literature shows that cylindrical and semi-cylindrical weirs are not widely used in practice. Because of their low construction cost and simplicity, an investigation was done to study cylindrical and semi-cylindrical weirs in terms of th...

Journal: :Environmental humanities 2022

2011
Yue Yang Min Dai Teresa M. Wilson Irina Omelchenko John E. Klimek Phillip A. Wilmarth Larry L. David Alfred L. Nuttall Peter G. Gillespie Xiaorui Shi

BACKGROUND The endothelial-blood/tissue barrier is critical for maintaining tissue homeostasis. The ear harbors a unique endothelial-blood/tissue barrier which we term "blood-labyrinth-barrier". This barrier is critical for maintaining inner ear homeostasis. Disruption of the blood-labyrinth-barrier is closely associated with a number of hearing disorders. Many proteins of the blood-brain-barri...

2006
B. Subbarao V. Srinivasan V. F. Fusco Irfan Bulu Humeyra Caglayan Ekmel Ozbay

In this work, we suggest and demonstrate a robust method to tune the plasma frequencies of wire mediums. The method we suggest involves the use of two or more wire arrangements in the unit cell. By incorporating the method we suggested it is possible to tune the plasma frequencies of wire mediums effectively by use of lower metal densities. In addition, we study the effective permittivities and...

Journal: :Jurnal arsip rekayasa sipil dan perencanaan 2023

The fulfillment of irrigation water needs must take into consideration the available resources. This is undertaken to avert conflicts that may arise among users. allocation can be accomplished through an analysis balance, juxtaposing discharge with required discharge. outcomes balance serve as a reference for allocation. Within Kedunglarangan Watershed (DAS), there exist six weirs, current mana...

2009
Zhengying WEI Meng CAO Yiping TANG Bingheng LU

Aiming at complex labyrinth-channel emitters’ structure and the practical problem of clogging, this paper investigates the practical flow of water, mixed with sand escaped from filtering, in the labyrinth channel. CFD analysis has been performed on liquid-solid two-phase flow in labyrinthchannel emitters. Based on micro-PIV (particle image velocimetry) flow visualization technology, the flow in...

Journal: :iranian journal of otorhinolaryngology 0
saleh mohebbi brain and spinal cord injury research center, neuroscience institute, tehran university of medical science, tehran, iran. marjan mirsalehi brain and spinal cord injury research center, neuroscience institute, tehran university of medical science, tehran, iran. lüder-alexander kahrs institute of mechatronic systems, leibniz university hannover, hannover, germany. tobias ortmaier institute of mechatronic systems, leibniz university hannover, hannover, germany. thomas lenarz department of otorhinolaryngology, hannover medical school, hannover, germany. omid majdani department of otorhinolaryngology, hannover medical school, hannover, germany.

introduction:visualization of inner ear structures is a valuable strategy for researchers and clinicians working on hearing pathologies. optical coherence tomography (oct) is a high-resolution imaging technology which may be used for the visualization of tissues. in this experimental study we aimed to evaluate inner ear anatomy in well-prepared human labyrinthine bones.materials and methods:thr...

2013
Marcelo Leite Ribeiro Anton J. Schleiss

The interest in Piano Key weirs (PKW) was increasing over the past years, both in terms of application and hydraulic research. Several systematic model test series were performed and published so far, originating from different hydraulic laboratories around the world. Therein, the key geometric parameters dominating the hydraulic capacity of PKWs were identified as developed crest length, trans...

2016
Kishore Kumar

Labyrinth seals are used in turbo-machinery for reducing the leakage of working fluid. The energy lost by the fluid passing through the gap between labyrinth seal and rotor causes the reduction in leakage rate. But the fluid in between the labyrinth seal and rotor induce various forces (radial and tangential forces). These forces can be represented by certain numbers of coefficients, such as st...

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