نتایج جستجو برای: water velocity and depth

تعداد نتایج: 16957134  

Journal: :Journal of the American Chemical Society 2005
Thomas D Perry Owen W Duckworth Treavor A Kendall Scot T Martin Ralph Mitchell

Ethylenediamine tetraacetate (EDTA)-mediated calcite dissolution occurs via a different process than water-promoted dissolution. Near-atomic-scale observations in EDTA solutions demonstrate that, after penetration through a critical pit depth barrier, step velocity increases linearly with pit depth for EDTA-promoted dissolution. The parallel processes of water-dominated dissolution at point def...

2011
Neil C. Rowe Alex L. Chan

Abstract We tested clues to automated detection of suspicious behavior of pedestrians in image sequences of 71,236 images in 106 sequences, developed at the U.S. Army Research Laboratory for testing surveillance systems. We achieved a 66% success rate at identifying suspicious behavior on infrared video and 64% on color video using just clues obtained from the overall body motion without attemp...

Journal: :تحقیقات مهندسی کشاورزی 0
آرش محجوبی مدیر دفتر فنی و مهندسی شبکه های آبیاری و زهکشی سازمان آب و برق خوزستان عدنان صادقی لاری استادیار گروه مهندسی آب دانشکده کشاورزی و منابع طبیعی دانشگاه هرمزگان

sugarcane, which has high water requirements, is grown in khuzestan province (iran). climate and optimizing the use of water is very important to sustainable cultivation of sugarcane. studies of water requirements for sugar cane in khuzestan show that in parts of sugarcane agro-industry, the water applied is more than the actual water requirement of the plant. the present study was conducted to...

Mehdi Nezhadnaderi, Tooraj Fathie

Pool and weir is a type of fishway that provides a route for fish to migrate to damupstream. The effective parameters for fish swimming include velocity, water depth andturbulence. Several rubber dams have been under construction in Mazandaran Province, butthe necessary structures have not been built around them yet. When constructing these rubberdams, numerical models can be used to evaluate f...

The Acoustic Tomography (AT) systems are used to monitor long-term and continuous flow in rivers, seas and oceans. One of the disadvantages of existing systems in Iran is the inability of real-time/automated measurements. In this study, by adding a raspberry Pi computer to the system and performing the required programming, it was possible to do online monitoring. The data are transferred to th...

2007
KRISTIN E. MULL MARGARET A. WILZBACH

—We assessed the relative importance of various factors contributing to spawning site use by a population of threatened coho salmon Oncorhynchus kisutch in Freshwater Creek, California, and created a predictive model of spawning habitat selection based on logistic regression analysis. We excluded sampling sites that previous studies had established as unsuitable on the basis of depth and substr...

2008
S. A. Talke H. E. de Swart H. M. Schuttelaars

Motivated by field studies of the Ems estuary which show longitudinal gradients in bottom sediment concentration as high as O(0.01 kg/m), we develop an analytical model for estuarine residual circulation based on currents from salinity gradients, turbidity gradients, and freshwater discharge. Salinity is assumed to be vertically well mixed, while the vertical concentration profile is assumed to...

1993
T. Landelius L. Haglund H. Knutsson

T. Landelius, L. Haglund, H. Knutsson Computer Vision Laboratory Link oping University, S-581 83 Linkoping Sweden tel. +46 13 28 26 51, fax. +46 13 13 85 26, email: [email protected] Abstract This paper presents an algorithm for retrieving depth and velocity by estimating the 3D-orientation in an image sequence under the assumption of pure translation of the camera in a static scene. Quantitative...

Journal: :journal of solid mechanics 0
r kumar department of mathematics, kurukshetra university kurukshetra-136119, haryana , india p sharma department of mathematics, kurukshetra university kurukshetra-136119, haryana , india

in this paper the propagation of harmonic plane waves in a homogeneous anisotropic magneto-piezothermoelastic diffusive body with fractional order derivative is studied. the governing equations for a homogeneous transversely isotropic body in the context of the theory of thermoelasticity with diffusion given by sherief et al. [1] are considered as a special case. it is found that three types of...

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