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Ogita, Sacchio The Korean Society of Ginseng 1990 Journal of Ginseng Research Vol.14 No.2
The climacterium is that phase in the aging precess during which a woman passes from the reproductive to the non-reporductive stage. The signals, such as hot flashes, vaso-motoric disturbances, perspiration, stiff shoulders, emotinal symptoms, are refered to as climacteric disturbances. Treatment of climacteric symptoms centers around estrogen replacement and transfuilizers, but there are many problems to be solved to use these hormones/drugs as far as dossage, duration and complications are concerned. The care of women during the climacteric years should provide relief of distressing symptoms with as high a degree of safety as possible. From this view point, we used red ginseng powder to those patients with high menopausal index successfully. We studied its mechanism of action and proved that red ginseng improved the micro-circulation system via improvement of erythrocyte reformability which enhanced sex steroidgensis consequently.
Accurate and Verified Computation of Matrix Determinant
Takeshi Ogita 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
This paper is concerned with numerical computations of matrix determinants. An algorithm for computing an accurate and verified matrix determinant is proposed using matrix factorizations. First, an algorithm for relatively well-conditioned problems are introduced. Next, extremely ill-conditioned cases are treated. For the purpose, an accurate algorithm for an inverse LU factorization is used. By these algorithms, accurate results of the matrix determinants can efficiently be obtained for much wider range of problems. Numerical results are also presented.
Surface Phenomena of Molecular Clusters by Molecular Dynamics Method
Maruyama, Shigeo,Matsumoto, Sohei,Ogita, Akihiro Korean Society of Marine Engineers 1996 한국마린엔지니어링학회지 Vol.20 No.3
Liquid droplets of water and argon surrounded by their vapor have been simulated by the milecular dynamics method. To explore the surface phenomena of clusters, each molecule is classified into 'liquid', 'surface', or 'vapor' with respect to the number of neighbor molecules. The contribution of a 'surface' molecule of the water cluster to the far infrared spectrum is almist the same as that of the 'liquid' molecule. Hence, the liquid-vapor interface is viewed as geometrically and temporally varying boundary of 'liquid' molecules with only a single layer of 'surface' molecules that might have different characteristics from the 'liquid' molecules. The time scale of the 'phase change' of each molecule is estimated for the argon cluster by observing the instantancous kinetic and potential energies of each molecule. To compare the feature of clusters with macroscopic droplets, the temperature dependence of the surface tension of the argon cluster is estimated.