The article deals with the forms of the adaption of vernacular buildings situated in the upper part of the Ore Mountains to cold
climate. Unfavourable climatic conditions in the mountainous areas were a significantly restricting factor, especially in terms of agriculture and permanent settlement. The Ore Mountains folk house is a result of the century-long adaptation to cold climate, and as such it includes a set of purposeful measures. These could be seen in the layout and construction of the house (a compact house with integrated shed, specific forms of roof) and materials used
(boarding or shingle-panelling to protect gables and half-timbered
walls, shingle or thatch roofs). Different architectural elements, which were conditioned by the local climate and were typical for the
traditional architecture in the Ore Mountains, developed there (wind
porch, bay toilet, another entrance on the second floor).
The present text maps the actual situation of the participants of the controlled resettlement from the former Soviet Union to the Czech Republic in the years 1992–1993. Better to say, it maps the situation of a group of these settlers who at present live in the village Milovice, in the revitalized former military domain in the south-eastern part of the region Střední Čechy (Central Bohemia). The aim of the research was to analyze how the settlers perceive their reception from part of the majorite society, to study their adaptive strategies and to find out if the resettlement to the Czech Republic and the choice of the mentioned locality fulfilled their wishes and to what degree. The final part of the article summarizes what the settlers see as positive and what as negative aspects of the resettlement. The text is based on repeated directed interviews and observations realized in Milovice in the years 2008–2009.
We hypothesized that hypertension-related myocardial remodeling characterized by hypertrophy and fibrosis might be accompanied by cell-to-cell gap junction alterations that may account for increased arrhythmogenesis. Intercellular junctions and expression of gap junction protein connexin-43 were analyzed in rat heart tissues from both spontaneous (SHR) and L-NAME model of hypertension. Isolated heart preparation was used to examine susceptibility of the heart to lethal ventricular fibrillation induced by low potassium perfusion. Ultrastructure observation revealed enhanced neoformation of side-to-side type while internalization of end-to-end type (intercalated disc-related) of gap junctions prevailed in the myocardium of rats suffering from either spontaneous or L-NAME-induced hypertension. In parallel, immunolabeling showed increased number of connexin-43 positive gap junctions in lateral cell membrane surfaces, particularly in SHR. Besides, focal loss of immunopositive signal was observed more frequently in hearts of rats treated with L-NAME. There was a significantly higher incidence of hypokalemia-induced ventricular fibrillation in hypertensive compared to normotensive rat hearts. We conclude that adaptation of the heart to hypertension-induced mechanical overload results in maladaptive gap junction remodeling that consequently promotes development of fatal arrhythmias., M. Fialová, K. Dlugošová, L. Okrouhlicová, F. Kristek, M. Manoach, N. Tribulová., and Obsahuje bibliografii a biblioigrafické údaje
Prosopis juliflora is an invasive leguminous tree species growing profusely under wide environmental conditions. Primary objective of this study was to investigate adaptation strategies evolved to deal with wide environmental conditions during different seasons. P. juliflora adapts through a production of leaves in two seasons, namely, the spring (the first cohort) and monsoon (the second cohort) with differing but optimal physiological characteristics for growth in respective seasons. Our studies show that the first cohort of leaves exhibit maximum carbon fixation under moderate temperatures and a wide range of PPFD. However, these leaves are sensitive to high leaf-to-air-vapor pressure deficit (VPD) occurring at high temperatures in summer resulting in senescence. While the second cohort of leaves produced during monsoon showed maximum carbon fixation at high irradiance and temperatures with low VPD, it is sensitive to low temperatures causing senescence in winter., P. A. Shirke, U. V. Pathre, P. V. Sane., and Obsahuje bibliografické odkazy
In this paper, the finite-time stabilization problem of chained form systems with parametric uncertainties is investigated. A novel switching control strategy is proposed for adaptive finite-time control design with the help of Lyapunov-based method and time-rescaling technique. With the proposed control law, the uncertain closed-loop system under consideration is finite-time stable within a given settling time. An illustrative example is also given to show the effectiveness of the proposed controller.