نتایج جستجو برای: spur

تعداد نتایج: 4063  

2014
M. Vaghefi

Spur dike is one of the hydraulic structures used in rivers to protect river banks. In this paper, flow pattern around a T-shaped spur dike which is located in a 90◦ bend and different amounts of submersion has been studied using Flow-3D. Numerical results have been compared with experimental results and have been analysed.

Journal: :تحقیقات مهندسی کشاورزی 0
سعید گوهری استادیار گروه مهندسی آب دانشگاه بوعلی سینا سیدعلی ایوب زاده دانشیار گروه مهندسی سازه های آبی دانشگاه تربیت مدرس مسعود قدسیان استاد گروه مهندسی عمران دانشگاه تربیت مدرس سیدعلی اکبر صالحی نیشابوری استاد گروه مهندسی عمران دانشگاه تربیت مدرس

flow passing through lateral intakes and channel junctions is turbulent. sediment flow and bed forms areaffected by these flow patterns and vice versa. in this research, a laboratory study was carried out toexplore a possible method for sediment control for a set of submerged vanes and a single spur dikesimultaneously. since a larger portion of the near-bed flow was diverted, the intake receive...

Journal: :Investigative ophthalmology & visual science 1994
E R Tamm C Flügel F H Stefani E Lütjen-Drecoll

PURPOSE The innervation of the scleral spur region was investigated to learn whether mechano-receptors are present in this region. METHODS Serial tangential sections and whole-mount preparations of the scleral spur region of 18 human eyes of different ages were investigated with electronmicroscopic and immunohistochemical methods. For immunohistochemistry antibodies against neurofilament-prot...

Journal: :gastroenterology and hepatology from bed to bench 0
graziella privitera university of catania giovanni meli university of catania

chronic anemia is common in liver cirrhosis. in this setting the pathogenesis of anemia is complex and multifactorial. spur cell anemia is a serious disorder in cirrhotic patients associated with poor prognosis. liver transplantation constitutes the only therapeutic tool. we report a case of  a severe spur cell anemia in alcoholic liver cirrhosis. in the attempt to investigate the origin of the...

R Prabhu Sekar, R Ravivarman

Tooth root crack is considered as one of the crucial causes of failure in the gearing system and it occurs at the tooth root due to an excessive bending stress developed in the root region. The modern power transmission gear drives demand high bending load capacity, increased contact load capacity, low weight, reduced noise and longer life. These subsequent conditions are satisfied by the aid o...

Apple is one of the most important fruits in temperate zones with a long post-harvest life during cold storage. A factorial experiment, in a randomized completely block design was used to investigate the preharvest application of Iron (0, 500 and 1000 mg Fe-EDDHA per tree) and nitrogen (0, 48 and 96 g ammonium nitrate per tree( on some postharvest qualitative characteristics in "Red spur" and "...

Journal: :The Journal of bone and joint surgery. British volume 1966
L Kessel M Rang

2007
Victor S. Reinhardt

This paper reviews spur reduction techniques used in direct digital synthesizers (DDSs) or numerically controlled oscillators (NCOs). First, the classification and operation of conventional DDSs are reviewed. Covered are the pulse output DDS, sine output DDS, fractional divider, and phase interpolation DDS. It is shown that DDSs produce spurs as well as the desired output frequency due to the a...

Journal: :Journal of the history of biology 2015
Peter Hobbins

For over two centuries, the platypus (Ornithorhynchus anatinus) has been constructed and categorized in multiple ways. An unprecedented mélange of anatomical features and physiological functions, it long remained a systematic quandary. Nevertheless, since 1797, naturalists and biologists have pursued two recurring obsessions. Investigations into platypus reproduction and lactation have focused ...

Mahmood Shafai Bejestan Mohammad Bahrami Yarahmadi Nushin Najafi Birgani

The main purpose of this paper was to evaluate the performance of the triangular vanes located on the bed and their effect on the bed topography considering different flow conditions. For this purpose, tests were carried out on a straight flume for different flow conditions (five Froude numbers of 0.18, 0.20, 0.22, 0.24 and 0.26) by installing a series of triangular vanes at a space of 4Le (Le ...

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