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The purpose of the work is to evaluate the variability of bioclimatic conditions and their diversity in areas of a different degree of anthropogenic transformation. An important element of the work is to determine frequency of certain biothermal conditions in the analysed areas, strongly exposing the human body to heat and causing thermal stress of a various intensity. The most important meteorological parameter considered in this paper was the air temperature, because out of physical stimuli it is the one which is most intensely perceived, especially when its fluctuations occur at short-time intervals. The research was based on the meteorological data made available by the Voivodship Inspectorate of Environmental Protection (WIOŚ). The data come from automated measurement stations operating as part of air quality monitoring system, located in different districts of Warsaw and outside the city. Each of the stations is marked by individual features resulting from a different degree of anthropogenic transformation of the closest surroundings.
From 1991-1996, the activity rhythms of 14 radio-collared pine martens Martes martes (Linnaeus, 1758) (6 males and 8 females) were studied in the pristine deciduous and mixed forests of the Białowieża National Park. Tracking data (5823 h) indicated that the activity rhythms of pine martens varied between sexes and seasons. In spring, male activity peaked at 20.00-00.00 h, whereas in summer and autumn-winter, activity was bimodal, peaking at 18.00-22.00 h and 02.00-04.00 h. Female activity in spring was more evenly distributed than that of males, but in summer their activity peaked at 20.00-00.00 h, while in autumn-winter females had a bimodal rhythm with peaks at 18.00-20.00 h and 02.00-06.00 h. In breeding females, activity rhythms changed in the course of pregnancy and nursing. On average, martens started their activity 73±209 (SD) min before sunset and finished 87 ± 245 min after sunrise. Females became active earlier than males but both sexes terminated activity at the same time. For both males and females the daily activity rhythm was not related to the diurnal course of temperature.
ATP level, cell motility and viability, oxygen uptake, pyruvate kinase activity, and ultra-weak photon emission (UPE) induced by red-ox Fe2+ -ascorbate cy­cling system were studied in fresh, in previously equilibrated in a glycerol diluent, and in cryopreserved bull spermatozoa, exposed to thermal stress by incubation of the cells at 44°C. A sharp drop in motility and viability of fresh spermatozoa and even more so, of equilibrated and cryopreserved cells was accompanied by accumulation of ATP. When cell movement was totally inhibited, ATP utilization was decreased, while chemical energy continued to be produced by cell pyruvate kinase, one of the key glycolytic enzymes, which in spermatozoa is very active (6500 IU/g protein) and insensitive to feed-back inhibition by excess of ATP and I.-cysteine. Accumulation of ATP during incubation at 44°C in 0.9% NaCI was accompa­nied by a rapid decrease in oxygen consumption by fresh spermatozoa and an increase in Fe2+-ascorbate induced UPE, followed by a sharp decrease in ATP level observed at the end of induced UPE measurement. The increase in photon emission due to lipid peroxidation was highly correlated with the increase in cell ATP level caused by thermal stress.
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Many building elements, due to their destination, are exposed to the influence of external environment, often very aggressive. Due to that such building elements should be protected in a special way. I have presented the outline of problems related with maintenance of building structures, taking into account the principles of sustainable building. I have paid extra attention to the characteristics of local environment conditions and to their influence on the response of selected building elements. Building materials should be characterized with such features that will assure that the structures, in which they will be installed, will meet the requirements referring to service features. In this paper requirements regarding structural-material solutions for structures, bases for diagnostic tests and the essence of repair and rehabilitation of building structures has been discussed.
This study was conducted to determine the impact of heat stress on some physiological and endocrine traits in Saanen goats raised under Mediterranean climate conditions. The effects of thermal stress on heart rate (HR), respiration rate (RR) and rectal temperature (RT) on plasma total trii-odothyronine (T3), thyroxine (T4), Cortisol (C), and HSP70 concentrations were evaluated on twenty two Saanen goats of different ages in the second week of April 2013, July 2013, October 2013 and January 2014. Climatic data such as temperature (°C) and relative humidity (%) were recorded from Spring 2013 to Winter 2014. Live body and BCS values were also recorded during this period. The physiological parameters above were measured twice on each experiment day (morning and afternoon) in all seasons. Blood samples were collected in each afternoon of the experiment day to analyze T3, T4 C, and HSP70. All data were analyzed. According to the values of rectal temperature (RT), it was estimated that the goats were under extreme heat stress only in the summer season. The heart rate (HR) values in the winter season for morning and noon periods were found statistically significant (p < 0.05). The average respiratory rate (RR) in the spring season was found significantly lower. On the other hand, the RR for the noon period in the summer was higher than in the fall and winter seasons (p < 0.05). There was a significant difference (p < 0.05) between summer and fall seasons for C values. The highest value (96.62 ng/ml) was obtained in spring, whereas the lowest (60.58 ng/ml) in the fall. T3 levels in the fall and winter were found to be statistically significant (p < 0.05). They were the highest in the winter and spring, and the lowest in fall. T4 and T4/T3 levels in the winter were found to be statistically higher than in other seasons (p < 0.05). The lowest value for T4 was found in the fall and for T4/T3 in summer. Mean HSP70 value in spring was found to be statistically low (p < 0.05). The changes in THI values in different seasons, particularly between mornings and afternoons, indicated that thermal stress was evident, and that the animals became resistant to it eventually. The fluctuations of the C, T3, T4 and HSP70 values were indicators of the animals’ reaction to thermal stress. The THI values in spring, which were between 16 and 18 THI, may be considered within the ideal comfort zone for goats. It was observed that Saanen goats were able to adapt to seasonal weather changes in the environmental conditions of the region.
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