The Cauchy problem for a stochastic partial differential equation with a spatial correlated Gaussian noise is considered. The ''drift'' is continuous, one-sided linearily bounded and of at most polynomial growth while the “diffusion” is globally Lipschitz continuous. In the paper statements on existence and uniqueness of solutions, their pathwise spatial growth and on their ultimate boundedness as well as on asymptotical exponential stability in mean square in a certain Hilbert space of weighted functions are proved.
The effect of oestradiol administration and restricted feeding on longitudinal tibia growth was investigated in immature male rats. The restrictedly fed animals had a significantly longer tibia, greater thickness of the growth plate, faster rate of longitudinal tibial growth as well as the greater rate of [methyl-3H]thymidine incorporation into the growth plate of the tibia compared with oestradiol-treated animals. The results indicate that, in immature male rats, exogenous oestradiol can decrease the longitudinal growth of the tibia (at least partly due to inhibition of cell proliferation in the growth plate) independently of its anorexic effect.
Three new genera containing five new species of Lophopidae are described: Maana colorata, Maana erythina, Maana oriomoensis, Podoschtroumpfa magna and Pseudotyxis malimoenensis. A new key to the genera of Lophopidae is also provided, followed by a cheklist of the distribution of the genera and their host plants.
Chlorophyll a (Chl a) has an asymmetrical molecular organization, which dictates its orientation and the location of the pigment in the mature photosynthetic apparatus. Although Chl a fluorescence (ChlF) is widely accepted as a proxy for plant photosynthetic performance under countless stress conditions and across species, a mechanistic understanding of this causality is missing. Since water plays a much greater role than solvent for the photosynthetic machinery, elucidating its influence on Chl a may explain the reliable reflection of plant stress response in the ChlF signal. We examine the effect of hydration from well-watered to lethal drought on ChlF imagery results across morphologically diverse species to begin testing the impact of molecular scale hydration of Chl a on ChlF. Our results support a conceptual model where water is an integral part of the photosystems' structure and directly influences Chl a behavior leading to changes in the energy partitioning and ultimately in ChlF., C. R. Guadagno, D. P. Beverly, B. E. Ewers., and Obsahuje bibliografické odkazy
This catalogue is computer-based and issued in collaboration with the CDS in Strasbourg. The outlay of the catalogue will be described, particularly the tracer system for data base handling. A new examination of cluster appearances on survey charts has been entered in the 1983 edition. Various parameters will be compared and their accuracy discussed.
A multi-level calculation of the hydrogen spcctrum by Skumanich and Lites, followed by a two-level rcpresentation of each transition, shows that all the solar Lyman α photons are created in the high chromosphere, above ro^ ≃ 10^2 (ro denote the optical depth at the center of the line). Below this depth the Lyman α line is only fed by
multiple scatterings. The source function decreases, first very slowly and then as ro^ ≃ 10^7. The change in slope occurs at ro^ ≃ 10^5.
We shall present a model for the formation of Lyman α in the chromosphere below the creation region. The hydrogen atom is treated as a two-level atom and the chromosphere as a
semi-infinite medium free of primary sources and illuminated by an isotropic and frequency independent radiation field at ro^ ≃ 10^2. A second order escape probability approximation fields a simple analytical expression which accurately reproduces the behaviour
of the Lyman α source function between ro ≃ 10^2 and 5 10^6 provided the destruction probability is set close to 10“-6. This value agrees very well with that obtained by Skumanich and Lites for the generalized Lyman α destruction probability in the low chromosphere.
We have evaluated whether the addition of either bradykinin or histamine favours the lymphatic absorption of human recombinant ¡nterferon-a2 (IFN-cq) administered by the subcutaneous route. Subcutaneous administration of IFN-a2 with bradykinin enhances IFN absorption via both capillaries and lymphatics, so that either the plasma or lymph areas under the concentration curves (ACJC) increase significantly up to 1751 ±483 and 1319±608 l(_l/ml/min respectively as compared to the respective ACJC values (613±208 and 483±213 ICJ/ml/min) obtained after IFN injection in normal saline. Since the lymph ACJC/plasma ACJC ratios remain unaltered, there is no preferential lymphatic absorption of IFN-a2 after bradykinin administration. Dual-label experiments, 125l-IFN-a2 in saline and 131l-IFN-a2 in saline containing 200 jig histamine were injected subcutaneously into the left and into the right shank of the same animal, gave similar results. The kinetics of 125l and 131l acid-soluble radioactivity confirm that histamine favours both plasmatic and lymphatic absorption.
Let X be a Stein manifold of complex dimension n\geqslant 2 and \Omega \Subset X be a relatively compact domain with C^{2} smooth boundary in X. Assume that Ω is a weakly q-pseudoconvex domain in X. The purpose of this paper is to establish sufficient conditions for the closed range of \overline \partial on Ω. Moreover, we study the \overline \partial -problem on Ω. Specifically, we use the modified weight function method to study the weighted \overline \partial -problem with exact support in Ω. Our method relies on the L^{2} -estimates by Hörmander (1965) and by Kohn (1973)., Sayed Saber., and Obsahuje seznam literatury
The aim of this paper is to describe 18th century "language criticism" (Sprachkritik) in the Bohemian Lands and underline its role within the process of establishing of the literary criticism. In the Habsburg monarchy, the language criticism can be traced back to the late 1740s; its origins are linked to the southern German sense of cultural (and thus linguistic), political and economical backwardness and to the efforts to catch up with the mostly protestant countries of Central and Northern Germany. The authors of this article examine not only reflections of used language and style in particular works, but also the position, prestige and function of various languages (German, Latin, Czech) themselves. The trends in language criticism and - in the narrower sense - language cultivation are examined with the use of both expert contributions to learned discussions and publicistic articles in critical journals aiming at a larger audience. In the whole process, several moments that meant a significant impulse for language criticism can be observed. The first one would be the appointment of Karl Heinrich Seibt as university professor of Schöne Wissenschaften (belles lettres), rhetoric, historia litteraria and ethics in 1763, followed by the efforts to establish a learned society, Josephine reforms and foundation of a chair of Czech language and literature at Prague university in 1791. Finally, the tightening of censorship from the second half of 1790s on had a considerable influence on criticism; its subject started to change and it began to focus on a different group of intended readers: while it used to try to educate potential future authors, afterwards it concentrated more and more on educating of the "common reader" and engaging him into critical reflections on belles lettres., Václav Petrbok a Ondřej Podavka., and Obsahuje bibliografické odkazy