نتایج جستجو برای: negative mass density
تعداد نتایج: 1344552 فیلتر نتایج به سال:
We modified the Press-Schechter (PS) formalism and then analytically derived a constrained mass distribution function n(M |φ) for the regions having some specified value of the primordial gravitational potential, φ. The resulting modified PS theory predicts that gravitationally bound clumps with masses corresponding to rich clusters are significantly biased toward the regions of negative primor...
Background: Low bone mass is a frequent complication of chronic inflammatory disease. The pathogenesis of osteoporosis in chronic inflammatory disease may be secondary to releases of cytokines such as TNF-a and IL6. Chronic gastritis due to helicobacter pylori (HP) infection may lead to decreased bone mineral density (BMD) and predispose patients to osteoporosis. The objective of this ...
Petroleum hydrocarbon contamination is a major global prevalent issue in the petroleum sector. This research focuses on evaluating biodegradation of three Gram-negative bacilli, isolated from cowpea planted soil, contaminated with kerosene. The Gram negative bacilli strains have been characterized and identified, using MicrobactTM ID24E systems for the identification of Enterobacteriaceae and c...
BACKGROUND In a cross-sectional study in 403 healthy, independently living elderly men (mean age 78 years), we determined which are the main physiological determinants of functional ability in the elderly, and which components of the somatotropic system contribute to the maintenance of functional ability. METHODS Functional ability was assessed by the number of problems in activities of daily...
background: ageing of population worldwide will be responsible for a major increase of the incidence of osteoporosis in elderly. for the individual, osteoporotic fractures result in great disability as well as loss of quality of life and also represent an enormous burden for healthcare systems. this study was conducted to determine the prevalence of osteoporosis and it's association with s...
Charged rotating black holes of Einstein-Maxwell-Chern-Simons theory in odd dimensions, D ≥ 5, may possess a negative horizon mass, while their total mass is positive. This surprising feature is related to the existence of counterrotating solutions, where the horizon angular velocity Ω and the angular momentum J possess opposite signs. Black holes may further possess vanishing horizon angular v...
Forty growing ram lambs (Lori-Bakhtiari breed) averaging 28 kg (±1.5) were allocated in this study to evaluate the optimal dietary energy density in a lamb fattening enterprise in Iran. The feed intake (FI), body weight (BW), gain to feed ratio (G:F) and carcass characteristics were studied. Four treatments differed in metabolizable energy content (ME) as follow; 2, 2.3, 2.6 and 2.9 Mcal/kg for...
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