نتایج جستجو برای: thin beds
تعداد نتایج: 141786 فیلتر نتایج به سال:
IMPORTANCE In 1939, English mathematician, geneticist, and psychiatrist Lionel Sharples Penrose hypothesized that the numbers of psychiatric hospital beds and the sizes of prison populations were inversely related; 75 years later, the question arises as to whether the hypothesis applies to recent developments in South America. OBJECTIVE To explore the possible association of changes in the nu...
BACKGROUND & AIM While most of the published researches have reported the amount of inequity in geographical distribution of important health resources, only a small number of studies have focused on the trend of inequality in the distribution of these resources. The purpose of this study was to determine the trend of inequality in the distribution of intensive care beds in Iran during 2010 to ...
About one-third of the general practices in the Oxfordshire Health District have access to beds in community hospitals as well as district general hospitals. Hospital Activity Analysis data were used to calculate the average number of hospital beds occupied daily by patients registered with each general practice in the district. Practices with and without access to community hospitals were comp...
Abst r ac t —Understanding the interactions between kelp beds and nearshore fish is essential because anthropogenic changes and natural variability in these beds may affect available habitat for fishes. In this study fish communities were investigated in south-central Alaska kelp beds characterized by a range of substrate complexity and varying densities of both perennial understory kelps and a...
The tropical tanner grass, Urochloa arrecta, is one of the worst aquatic plant invaders in Brazilian freshwater ecosystems. This study aimed to compare beds macrophytes dominated and without U. arrecta Guaraguaçu River, a subtropical tidal river South Brazil, analyze effects that this invasive grass has on biodiversity native at two spatial scales. We compared macrophyte by without, considering...
extended abstract introduction hospitals are the most important and complex social units which are intended to protect the lives of people and to treat and improve them. with the passage of time and progress in science, hospitals have been equipped with more advanced technology and facilities. more active beds in hospitals are indications of specialized manpower, equipment and facilities for th...
The submerged–flow (SF) wetland concept offers high organics and solids removal at relatively low cost for construction, operation, and maintenance. In this comparative study, vegetated and non–vegetated SF wetlands were investigated for their ability to treat primary lagoon effluent. The experimental design was comprised of three vegetated and three non–vegetated SF wetland beds (3 m Ü 1 m Ü 0...
abstract one of the most frequently encountered cases of rapid varied flow is the hydraulic jump. it occurs when a supercritical open channel flow changes into sub critical flow. in the present research, the experimental study of the hydraulic jump on seven sinusoidal corrugated beds with different wave steepness. the wave steepness of sinusoidal corrugated beds is in the range of 0.1667 to 0.7...
The responses of the vascular beds in skeletal muscle and skin to changes in blood pH on the acid and alkaline sides of the physiologic range were compared. Dilatation occurred in both cutaneous and muscular beds when the blood pH was shifted to the acid range. Dilatation also occurred in the muscle beds when the blood pH was shifted to the alkaline range but such change in blood pH caused vaso...
construction of railway embankments on loose beds without using any methods of soil improvement (e.g. stone columns in silt and clay beds, deep soil mixing method, jet grouting and also using micropiles individually or in groups form) leads to reduction of embankment slope gradient, which significantly increases the volume of soil operation. generally, micropile as a reinforcing element with t...
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