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Background. Numerous connections of physical activity with biological indicators and various diseases justify its place in the multifaceted theory of health, thus making it a health measure. The aim of the study was to learn about the physical activity declared by students at Belarusian universities – to determine its level and dominant areas. Material and methods. 739 people studying in Brest, Minsk, and Grodno (Belarus) were surveyed with the long version of the International Physical Activity Questionnaire (IPAQ). Results. The total physical activity of the surveyed students amounted to 4840.5 metabolic equivalent of task (MET) min/week (median), which proves their significant involvement in the broadly understood physical culture. The dominant area of their physical activity proved to be work-related effort (median=1700.6 MET-min/week), while the lowest activity of the respondents was related to sport and recreation. The surveyed men showed higher MET-min/week rates in total physical activity and its components compared with women except for housework. In each of the analyzed variables (gender, Body Mass Index (BMI), selfassessment of physical fitness, and declared amount of spare time), there were statistically significant differences in the physical activity level of the surveyed students. Conclusions. The surveyed men proved to be more active than women in all domains of physical activity except for housework. Respondents with a BMI indicating overweight were more active than those with a normal BMI or those who were underweight. High self-esteem and declaration of lacking spare time are associated with high values of the MET-min/week index.
The surface water resources of Belarus for the period 1956-2015 were specified. The redistribution of water resources in the basins of the main rivers and administrative regions was investigated. The refined map of the Belarusian river runoff has been built. Runoff forecasts for 11 rivers in the Neman River basin for two scenarios of A1B and B1 climate change were done. The results of forecasting indicate the increasing of runoff from 5.2% to 20.8%.
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Present climate change in Belarus

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Unemployment and its problems in the Grodno Region

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Article is devoted to studying of unemployment as a negative social and economic phenomenon in the life of a society. As the growth of the given parameter conducts to the shortage of produce. The structure of the unemployed according to the sex both in Grodno region, and across Belarus specifies prevalence of ‘female’ unemployment. A problem there is employment of youth. The disturbing tendency is traced at studying the structure of the age of the unemployed: the greatest share of the unemployed falls at the most productive age of 20-29 and 30-49 years. In the small regional centers the rate of unemployment is higher than in the large cities. This is connected with an absence of workplaces, backwardness of the real sector of economy, a weak level of development of social services. Therefore the state policy of employment aspires to provide equal opportunities to all physically fit citizens of Belarus, gives social guarantees and indemnifications to the unemployed, etc.
In the territory of NP the Białowieża Forest no special research on specific structure of lichens of the Cetrelia has been carried out, and there are only single instructions in publications (Golubkov 1986, 1987 and others) whose definitions are based on morphological characteristics and results of colour chemical reactions which are not always reliable. Three taxa of Cetrelia (C. cetrarioides, C. monachorum, C. olivetorum) have been identified in a study of the genus in Belarussian part of the Białowieża Forest. Cetrelia monachorum is the commonest member of the genus in the Białowieża Forest (46 records), whereas C. olivetorum is known from 35 localities. Cetrelia cetrarioides appears to be the rarest species of the genus in the Białowieża Forest (2 records). The distribution and status of three species in the Białowieża Forest are reviewed, distribution maps are provided, and the merits of the segregates for conservation measures are discussed.
As a result of the conducted investigations of the level fluctuations in Lake Naroch the initial data are divided into 3 components: a polynomial regression that makes it possible to find out an independent on time Law of trajectory, a periodic component of sinusoidal type and a residual sequence of independent random quantities. Modeling of the trajectory fluctuations is based on the deterministic part, consisting of the regression of the 8th order and periodic component, and also the random part, consisting of independent equally distributed quantities. Using this model it can be modeled the trajectory of the level fluctuations in Lake Naroch. The modeled trajectory by 200 years long demonstrated the probability of exceeding of maximum annual level, equal 1 per cent.
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