منابع مشابه
Fine bed material in pools of natural gravel bed channels
Natural gravel bed channels commonly contain a fine mode of sand and fine gravel that fills voids of the bed framework of coarser gravel. If the supply of fine bed material exceeds the storage capacity of framework voids, excess fine material forms surficial patches, which can be voluminous in pools during low flow. Data collected in 34 natural channels in northern California and southern Orego...
متن کاملCalculating bed load transport in steep boulder bed channels
[1] Steep, rough channels occupy a large fraction of the total channel length in mountainous regions. Most sediment mobilized on hillslopes must pass through these streams before reaching lower-gradient channels. Steep channels have wide grain size distributions that are composed of finer, more mobile sediment and large, rarely mobile grains. The large grains can bear a significant portion of t...
متن کاملBed Voidage and Heat Transfer in Non-Newtonian Liquid-Solid Fluidized Bed
The presence of particles in liquid-solid fluidized beds enhances the bed heat transfer, because the movement of the particles leads to an increased turbulence in the system. Moreover, the violent movement of the particles has a positive effect on fouling of the heat transfer surface. The aim of this investigation was to perform systematic measurements of bed voidage and heat transfer coeff...
متن کاملbed sore in icu
bed sore in icu r ghanee [1] , msc h gavami [2] , msc received: 6 april, 2010 accepted: 24 may, 2010 abstract background & aims: a fter cancer and cardiovascular diseases, pressure ulcers are the third costly disorders. most common causes of pressure ulcers development are age over 70 years, being male, white skin, smoking, low body mass index, impaired mobility, altered mental status, uri...
متن کاملAbility of bed bug-detecting canines to locate live bed bugs and viable bed bug eggs.
The bed bug, Cimex lectularius L., like other bed bug species, is difficult to visually locate because it is cryptic. Detector dogs are useful for locating bed bugs because they use olfaction rather than vision. Dogs were trained to detect the bed bug (as few as one adult male or female) and viable bed bug eggs (five, collected 5-6 d after feeding) by using a modified food and verbal reward sys...
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ژورنال
عنوان ژورنال: The Iowa Review
سال: 1975
ISSN: 0021-065X,2330-0361
DOI: 10.17077/0021-065x.1908