261 research outputs found
Candidate genes and clinical-laboratory parameters in pregnant women with preeclampsia
They studied the associations of genetic polymorphisms with clinico-laboratory indicators among pregnant women with preeclampsia depending on hereditary complicatio
Clinical and laboratory indicators in pregnant women with preeclampsia
The objective of this study is to compare clinical and laboratory indicators in pregnant women with preeclampsia (PE) compared with women with physiological pregnancy. The study group included 209 women with physiological pregnancy and 250 pregnant women with PE. We studied coagulogram data, biochemical blood analysis, and the level of systolic and diastolic blood pressure before and during pregnanc
Polymorphisms of genes and the risk of preeclampsia
They studied the relations of genetic polymorphisms with the risk of preeclampsia occurrence depending on hereditary complicatio
SPH Simulations of Counterrotating Disk Formation in Spiral Galaxies
We present the results of Smoothed Particle Hydrodynamics (SPH) simulations
of the formation of a massive counterrotating disk in a spiral galaxy. The
current study revisits and extends (with SPH) previous work carried out with
sticky particle gas dynamics, in which adiabatic gas infall and a retrograde
gas-rich dwarf merger were tested as the two most likely processes for
producing such a counterrotating disk. We report on experiments with a cold
primary similar to our Galaxy, as well as a hot, compact primary modeled after
NGC 4138. We have also conducted numerical experiments with varying amounts of
prograde gas in the primary disk, and an alternative infall model (a spherical
shell with retrograde angular momentum). The structure of the resulting
counterrotating disks is dramatically different with SPH. The disks we produce
are considerably thinner than the primary disks and those produced with sticky
particles. The time-scales for counterrotating disk formation are shorter with
SPH because the gas loses kinetic energy and angular momentum more rapidly.
Spiral structure is evident in most of the disks, but an exponential radial
profile is not a natural byproduct of these processes. The infalling gas shells
that we tested produce counterrotating bulges and rings rather than disks. The
presence of a considerable amount of preexisting prograde gas in the primary
causes, at least in the absence of star formation, a rapid inflow of gas to the
center and a subsequent hole in the counterrotating disk. In general, our SPH
experiments yield stronger evidence to suggest that the accretion of massive
counterrotating disks drives the evolution of the host galaxies towards earlier
(S0/Sa) Hubble types.Comment: To appear in ApJ. 20 pages LaTex 2-column with 3 tables, 23 figures
(GIF) available at this site. Complete gzipped postscript preprint with
embedded figures available from http://tarkus.pha.jhu.edu/~thakar/cr3.html (3
Mb
Genetic determinants of complicated pregnancy
The connections of polymorphic variants of the gene of vasoactive hormones with the level of arterial pressure in pregnant women, depending on the development of preeclampsia (PE), have been studie
The study of the role of maternal and fetal risk factors in the development of placental insufficiency
The objectives were to study the role of maternal and fetal risk factors in the development of placental insufficiency (PI) and fetal growth retardation syndrome (FGRS
Программное обеспечение для обучения в малых группах
This article focuses on the method of group training which represents one of the most actual and perspective forms of the organization of educational process. Authors confirm the theoretical conclusions with the experiment made with students of specialty "Information Systems and Technologies". Besides, article includes the description opportunities of the program adapted for work in small groups.В данной статье рассматривается метод группового обучения, который представляет собой одну из наиболее актуальных и перспективных форм организации учебного процесса. Авторы подтверждают свои теоретические выводы экспериментом, проведенным со студентами старших курсов специальности «Информационные системы и технологии». Кроме того, статья включает описание возможностей программы, адаптированной для выполнения общего задания в группах
Performance enhancement by unsteady-state reactor operation: Theoretical analysis for two-sites kinetic model
Theor. anal. of the reactor performance under unsteady-state conditions was carried out. The reactions are described by two kinetic models, which involve the participation in catalytic reaction of two types of active sites. The kinetic model I assumes the blocking of one of the active sites by a reactant, and the kinetic model II suggests a transformation of active sites of one type into another under the effect of the reaction temp. The unsteady-state conditions on the catalyst surface are supposed to be created (i) by forced oscillations of temp. and concn. in the reactor inlet (periodic operation of reactor) and (ii) by catalyst circulation between two reactors in a dual-reactor system (spatial regulation). The effect of various parameters like concn. of reactant, cycle split, length of period of forced oscillations, temps. and the ratio of catalyst vols. in the dual-reactor was investigated with respect to the yield of the desired product. It is shown that for both cases of unsteady-state conditions (periodic reactor operation as well as in a dual-reactor system), a mean reaction rate predicted by the kinetic model I was up to two times higher than the steady-state value. The kinetic model II shows a 20% increase of the selectivity towards the desired product. [on SciFinder (R)
The level of fibrinogen and gene polymorphism in pregnant women with placental insufficiency
To study the association of genetic polymorphisms of coagulation factors with clinical and laboratory indicators in pregnant women with placental insufficiency with fetal growth retardatio
Photometric deprojection of edge-on galaxies
Photometric deprojection is used to determine the stellardisk and bulge
parameters for several edgeon galaxies from the FGC catalog. The assumption
that the galaxies of our sample belonging to the fourth (i.e., lowest)
surfacebrightness class in the FGC are edgeon, lowsurfacebrightness (LSB)
galaxies is considered.Comment: 6 pages including 3 figures. Have been published in Astronomy
Letters, v.26, p.219, 2000 (Translated from Pis'ma v Astronomicheskiy
Zhurnal, V.26, N.4, 2000, p.266.
- …