نتایج جستجو برای: hydraulic characteristics

تعداد نتایج: 685757  

2002
Terhi Helmiö Juha Järvelä

In environmental flood management, an essential task is to improve channel conveyance using environmentally preferable methods, which aim to preserve natural morphological and hydraulic characteristics of a river. This requires a reliable channel design method that accounts for complex hydraulics, i.e. two-stage channel or considerable bank vegetation. Hydraulic field measurements were carried ...

Journal: :Annals of botany 2010
Sergio Tombesi R Scott Johnson Kevin R Day Theodore M DeJong

BACKGROUND AND AIMS Previous studies indicate that the size-controlling capacity of peach rootstocks is associated with reductions of scion water potential during mid-day that are caused by the reduced hydraulic conductance of the rootstock. Thus, shoot growth appears to be reduced by decreases in stem water potential. The aim of this study was to investigate the mechanism of reduced hydraulic ...

2000
Dipl.-Ing. B. KUTTER D. G. FELDMANN

The subject of the presented research project is the exact knowledge about the parameters influencing the operating characteristics and limiting the maximum power of low pressure hydraulic vane type machines, used as drives for ship-deck machinery, to obtain a full utilisation of the potential of these motor type, and the intera ction between biodegradable hydraulic fluids and hydrostatic units...

Journal: :Tree physiology 2004
Peter J Franks

A better understanding of the mechanistic basis of stomatal control is necessary to understand why modes of stomatal response differ among individual trees, and to improve the theoretical foundation for predictive models and manipulative experiments. Current understanding of the mechanistic basis of stomatal control is reviewed here and discussed in relation to the plant hydraulic system. Analy...

2017
Shujun Zhao Yuanlai Cui Yufeng Luo Peifeng Li Xiangzheng Deng

Small vegetated drainage ditches play an important role in water and nutrient removal, but may cause water blocking problems. The aim of this study was to investigate vegetated drainage ditches’ hydraulic and wetland hydraulic characters. Field experiment were carried out, small drainage ditches with Juncus, Zizania latifolia, and Acorus calamus were selected under different water flows, and a ...

Journal: :بینا 0
طاهره ایردی t izadi shahid bahonar university, kerman, iranدانشگاه شهید باهنر کرمان

purpose: to develop a computational model for predicting the fluid production and flow, and intraocular pressure (iop) following glaucoma surgery. methods: to help elucidate the interplay of physical factors controlling the distribution and absorption of aqueous humor in sub-conjunctival tissue, and tissue remodeling, a computational model is developed to predict the fluid production in the eye...

2012
CHUNLIU LI LIYING WANG

Cascade-Correlation (CC) network is a new architecture and supervised learning algorithm for artificial neural networks. The learning algorithm of CC network and its network structure are described in this paper, the CC network with an excellent fitting ability is applied to fitting vibration characteristics of hydraulic turbine units according to different parts under three water heads. Compar...

2013
Ganesh Vyankatesh Patil

This paper presents the study of Simulation of Electro-Hydraulic Turbine Control (EHTC) Systems in the field of Power Generation in MATLAB Simulink. It discussed the Governing system used in Thermal Power Plant with Electro-Hydraulic controller with its design, construction and advantages where it indicates that EHTC System which protects and controls Governing of Steam turbines. This paper ind...

H Bonakdari M Moazamnia

Flow-rate measurement in rivers under different conditions is required for river management purposes including water resources planning, pollution prevention, and flood control. This study proposed a new discharge estimation method by using a mean velocity derived from a 2D velocity distribution formula based on Tsallis entropy concept. This procedure is done based on several factors which refl...

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