نتایج جستجو برای: mass density
تعداد نتایج: 849091 فیلتر نتایج به سال:
Abstract We apply our novel Markov Chain Monte Carlo (MCMC)–based algorithm for asteroid mass estimation to (16) Psyche, the target of NASA’s eponymous Psyche mission, based on close encounters with 10 different asteroids, and obtain a (1.117 ± 0.039) × −11 M ⊙ . ensure that method works as expected by applying it asteroids (1) Ceres (4) Vesta, find results are in agreement very accurate estima...
Abstract. A new precipitation sensor, the Differential Emissivity Imaging Disdrometer (DEID), is used to provide first continuous measurements of mass, diameter, and density individual hydrometeors. The DEID consists an infrared camera pointed at a heated aluminum plate. It exploits contrasting thermal emissivity water metal determine particle mass by assuming that energy conserved during trans...
detection of subsurface structures by means of gravity method can be used to determine mass distribution and density contrast of rock units. this distribution could be detected by different geophysical methods, especially gravity method. however, gravity techniques have some drawbacks and can't be always successful in distinguishing subsurface structures. performance of the gravity technique co...
Based on the recent discoveries of free floating brown dwarfs we derive estimates of the local mass density of this population of objects. Mass density estimates from various surveys span the range 0.03 to 0.005 M pc−3. These estimates are compared with the local mass densities of the other constituents of the galactic disk and, in particular, with the dynamically determined total local mass de...
BACKGROUND Osteoporosis, or porous bone, is a disease characterized by low bone mass density (BMD) and structural deterioration of bone tissue, leading to bone fragility and increased risk of hip, spine, and wrist fractures. There are numerous risk factors for osteoporosis. While many of these factors are non-genetic in nature, there is a definite genetic component responsible for this conditio...
Detection of subsurface structures by means of gravity method can be used to determine mass distribution and density contrast of rock units. This distribution could be detected by different geophysical methods, especially gravity method. However, gravity techniques have some drawbacks and can't be always successful in distinguishing subsurface structures. Performance of the gravity technique co...
background: we aimed to evaluate the effect of body weight and body mass index (bmi) on bone mineral density (bmd) in healthy postmenopausal iranian women. material and methods: two hundred postmenopausal women (age between 51 and 69 years) who had presented to the nuclear medicine center at shariati hospital in tehran, iran between april 2012 and august 2013 were included in this cross sec...
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