http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
오늘 본 자료
Serotonin reuptake inhibitors and bone health: A review of clinical studies and plausible mechanisms
Ravisha Wadhwa,Divya Vohora,Manoj Kumar,Sushama Talegaonkar 대한골다공증학회 2017 Osteoporosis and Sarcopenia Vol.3 No.2
Selective serotonin reuptake inhibitors (SSRIs) are currently the treatment of choice in depression and constitute major portion of prescription in depressive patients. The role of serotonin receptors in bone is emerging, raising certain questions regarding the effect of blockade of serotonin reuptake in the bone metabolism. Clinical studies have reported an association of SSRI antidepressants which with increase in fracture and decrease in bone mineral density. This review focus on recent evidence that evaluate the association of SSRIs with the risk of fracture and bone mineral density and also the probable mechanisms that might be involved in such effects.
M. Ravisha 장전수학회 2014 Proceedings of the Jangjeon mathematical society Vol.17 No.3
The eect of mechanical and thermal anisotropy on the stability of ferroconvection in a ferro uid saturated porous layer heated from below is investi- gated theoretically using modied Brinkman extended-Darcy equation with uid viscosity dierent from eective viscosity. The bounding surfaces of the porous medium are considered to be rigid-ferromagnetic with constant heat ux condi- tions at these surfaces. The resulting eigenvalue problem is solved for realistic rigid-ferromagnetic boundaries the critical stability parameters are obtained nu- merically using the Galerkin method. It is observed that increase in the value of thermal anisotropy parameter and viscosity ratio is to delay the onset of ferro- convection, while increase in the value of mechanical anisotropy parameter and magnetic number is to hasten the onset of ferroconvection. Further, the nonlin- earity of uid magnetization has no in uence on the stability of the system.
I.S. Shivakumara,이진호,A.L. Mamatha,M. Ravisha 대한기계학회 2011 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.25 No.4
The effects of boundary and local thermal non-equilibrium on the criterion for the onset of convection in a sparsely packed horizontal anisotropic porous layer are investigated. A two-field temperature model each representing the solid and fluid phases separately is used and the flow in the porous medium is described by the Brinkman extended-Darcy model. The lower boundary is rigid, while the upper boundary is considered to be either rigid or free with fixed temperature conditions at the boundaries. The stability equations are solved numerically using the Galerkin method to extract the critical stability parameters. The influence of local thermal non-equilibrium, mechanical and thermal anisotropy parameters representing the fluid and solid phases is assessed on the stability characteristics of the system. The existing results are obtained as limiting cases from the present study.
Brinkman ferromagnetic convection in a porous layer: Effect of MFD viscosity and magnetic boundaries
I.S. Shivakumara,이진호,C. E. Nanjundappa,M. Ravisha,D. H. Lee 대한기계학회 2013 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.27 No.12
In the present study, the effect of magnetic field dependent (MFD) viscosity and different types of magnetic boundaries on the onset of ferromagnetic convection in a horizontal layer of Brinkman porous medium is investigated numerically using the Galerkin method. The simultaneous and isolation presence of buoyancy and magnetic forces on the stability characteristics of the system are emphasized. The study reveals that the linear stability of the system depends significantly on the types of magnetic boundaries. The rigid-paramagnetic boundaries are found to be preferred to the ferromagnetic ones in suppressing ferromagnetic convection. Besides, the system is more stable when the magnetic forces alone are present. In addition, increasing MFD viscosity parameter l and decreasing magnetic number M1 and nonlinearity of fluid magnetization parameter M3 is to inhibit the onset of ferromagnetic convection in a porous medium. The critical wave number is found to be independent ofl , but increasing M1 and c as well as decreasing M3 is to reduce the size of convection cells. At higher values of M3, the critical Rayleigh number and the corresponding wave number coincide for different magnetic boundaries.