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Search Results: 1 - 10 of 130405 matches for " Marsusi V "
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Etiology and prevalence of preterm deliveries in Dr. Shariatie Hospital, 1996-97
Marsusi V,Rasekh K
Tehran University Medical Journal , 1998,
Abstract: One hundred and sixty preterm deliveries were done at our center in (1996-97). Classification according to etiology shows that 30% of these deliveries were due to PROM, and 13.75% had to be induced secondary to underling fetal or maternal indication, in 35.6% there were maternal or fetal pathology, and in 20.6% there were no recognized reason (idiopathic). The various etiologic factors were evaluated in 160 term deliveries as control group. The preterm deliveries had significantly higher rate. There were 40 cases of perinatal mortality that included 77% of total perinatal mortality in (1996-97). Acute lack of neonatal intensive care unit in Iran requires closer attention in the future.
A theoretical model obtained in momentum space for charge transport in a system consisting of non-interacting polarons
F. Marsusi,J. Sabbaghzadeh
Physics , 2011, DOI: 10.1103/PhysRevB.85.115302
Abstract: We developed a theory of charge transport in a system of non-interacting polarons. The theory was conducted to a compact relation through a nonperturbative method based on electron-phonon Hamiltonian. The derived final result represents both two different limits of band and phonon assisted transports which depends on temperature and electron-phonon coupling strength.
A Study of the Epiphytic Orchids in Jobolarangan Forest
Biodiversitas , 2001,
Abstract: The objective of the research was to know the species of epiphytic orchids in Jobolarangan forest. The orchid samples were taken from all stand-plants. The plants were chosen randomly by considering the diversity and richness of orchids that attach on it. Each plant was sampled in three repetitions. Sampling of orchids existence in the plant’s stand were done using transect method through a zonation system. In this research 11 epiphytic-orchids such as Bulbophyllum bakhuizenii Stenn, Coelogyne miniata Lindl, Coelogyne rochussenii de Vr., Dendrobium bigibbum Lindl., Dendrobchilum longifolium, Eria bogoriensis, J.J.S. Liparis caespitosa (Thou.) Lindl., Liparis pallida (Bl.). Pholidota globosa (Bl.) Lindl., Polystachya flavescens (Bl.) J.J.S., and Trichoglottis sp. were found. The host plant stand that was attached with most orchids was Schefflera fastigiata and Saurauia bracteosa, generally in zone three.
A Chemotaxonomic Study in the Genus Zingiber
Biodiversitas , 2001,
Abstract: Zingiber is profitable for spice, ingredients, medicine and garnishing plant (Purseglove, 1972). The systematic of Zingiber (and other Zingiberaceae) has been argued among the authors, because they commonly use the morphological and the anatomical characters, that they obtain limited data. The chemical constituents of volatile oils are one of the most prospective characters for taxonomy of Zingiber. This research is objected to find out (1) the constituents of volatile oils (2) the number and the type of compounds composing volatile and (3) the genetic relationship. This research is done in the laboratory. The data seeking covers, i.e. (1) water distillation (Guenther, 1948; Anon, 1977), (2) extraction (Anon, 1977; Harborne, 1984), and gas chromatography (Mc Nair & Bonelli, 1968; Pramono, 1988). Dendrogram is arranged referring to Sokal & Sneath (1963), and the association coefficient degrees are determined referring to Pielou (1984). The rhizomes are gathered from Bogor Botanical Garden and from around Surakarta. There are seven achieved species, namely Z. amaricans Nor., Z. aromaticum Val., Z. cassumunar Roxb., Z. gramineum Bl., Z. officinale Roxb., Z. ottensii Val., and Z. zerumbet (L.) J.E. Smith. Every species is identified referring to manuals of Backer & Bakhuizen van den Brink (1968), Holttum (1950) and Burkill (1935). The volatile contents of seven species subsequently are 4.67% (ml/100gr.), 5.00%, 6.33%, 0.20%, 6.67%, 4.29% and 6.00%. The numbers of composing volatile compounds subsequently are 30, 26, 37, 44, 29, 29 and 29. The genetic relationships of seven species are Z. amaricans, Z. aromaticum and Z. zerumbet joint at similarity index of 90, and it is followed by Z. ottensii at similarity index of 85. Then those five species join with Z. cassumunar and Z. gramineum at similarity index of 60. The last is the joining of Z. officinale to those six species at similarity index of 55.
Quantum Monte Carlo, time-dependent density functional theory, and density functional theory calculations of diamondoid excitation energies and Stokes shifts
F. Marsusi,J. Sabbaghzadeh,N. D. Drummond
Physics , 2011, DOI: 10.1103/PhysRevB.84.245315
Abstract: We have computed the absorption and emission energies and hence Stokes shifts of small diamondoids as a function of size using different theoretical approaches, including density functional theory and quantum Monte Carlo (QMC) calculations. The absorption spectra of these molecules were also investigated by time-dependent density functional theory (TD-DFT) and compared with experiment. We have analyzed the structural distortion and formation of a self-trapped exciton in the excited state, and we have studied the effects of these on the Stokes shift as a function of size. Compared to recent experiments, QMC overestimates the excitation energies by about 0.8(1) eV on average. Benefiting from a cancellation of errors, the optical gaps obtained in DFT calculations with the B3LYP functional are in better agreement with experiment. It is also shown that TD-B3LYP calculations can reproduce most of the features found in the experimental spectra. According to our calculations, the structures of diamondoids in the excited state show a distortion which is hardly noticeable compared to that found for methane. As the number of diamond cages is increased, the distortion mechanism abruptly changes character. We have shown that the Stokes shift is size-dependent and decreases with the number of diamond cages. The rate of decrease in the Stokes shift is on average 0.1 eV per cage for small diamondoids.
Nonsmooth Optimization Algorithms in Some Problems of Fracture Dynamics  [PDF]
V. V. Zozulya
Intelligent Information Management (IIM) , 2010, DOI: 10.4236/iim.2010.211073
Abstract: Mathematical statement of elastodynamic contact problem for cracked body with considering unilateral restrictions and friction of the crack faces is done in classical and weak forms. Different variational formulations of unilateral contact problems with friction based on boundary variational principle are considered. Nonsmooth optimization algorithms of Udzawa’s type for solution of unilateral contact problem with friction have been developed. Convergence of the proposed algorithms has been studied numerically.
Precessing Ball Solitons as Self-Organizing Systems during a Phase Transition in a Ferromagnet  [PDF]
V. V. Nietz
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.410A3010

Precessing ball solitons (PBS) in a ferromagnet during the first order phase transition is induced by a magnetic field directed along the axis of anisotropy, while the action of the periodic field perpendicular to the main magnetic field has been analyzed. Under these conditions, the characteristics of arising equilibrium PBS are uniquely determined by the frequency of the periodic field, but the solitons with other frequencies are impossible. For such structure, the entropy increase connected with dissipation is compensated by the decrease of the entropy due to the external periodic field. It is shown that the equilibrium PBS are essentially the “self-organizing systems” that can arise spotaneously in a metastable state of ferromagnet.

Movement of Self-Organizing Solitons in Ferromagnet  [PDF]
V. V. Nietz
Applied Mathematics (AM) , 2015, DOI: 10.4236/am.2015.610155
Abstract: Precessing ball solitons (PBS) in a ferromagnet during the first order phase transition induced by a magnetic field directed along the axis of anisotropy, while the additional action of high-frequency field perpendicular to the main magnetic field, are analyzed. It is shown that the spatial motion of solitons, associated with thermal fluctuations in the crystal, does not destroy the equilibrium of self-organized PBS.
Lα Line of Dark Positronium as a Nongravitational Detection of DM  [PDF]
V. Burdyuzha, V. Charugin
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.613187
Abstract: An attempt to predict the new atomic dark matter lines is done on the example of a dark lepton atom-positronium. Its Layman-alpha line with the energy near 3 GeV may be observable if the appropriate conditions are realized. For this we have studied a γ-ray excess in the center of our galaxy. In principle, this excess may be produced by the Lα line of a dark positronium in the medium with Compton scattering. The possibility of observations of an annihilation line (E~300 TeV) of dark positronium is also predicted. Other proposals to observe the atomic dark matter are shortly described. Besides, Hα line (1.3μ) of usual positronum must be observable in the direction on the center of our galaxy.
Randomization of Energy and Momentum in Statistical Mechanics  [PDF]
V. V. Paranjape
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.615223
Abstract: Particle-particle collisions in materials give rise to a particle distribution in energy and momentum in such a way that a most probable distribution is realized. I will show that an evaporating liquid generates a molecular imbalance in the equilibrium energy distribution. The molecular collisions by their inherent nature are able to repair the imbalance and in so doing it is shown that the liquids cool down. Similarly an external electric field creates substantial imbalance in the momentum distribution for the electrons in ionic semiconductors. Electron-electron collisions are able to restore the imbalance and as a consequence, similar to the evaporating liquid, the electron gas loses thermal energy and cools down.
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