Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 17

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
The article presents and analyses legal provisions regarding the space use in the interwar era (1918-1939). It depicts the development of European law with regard to spatial planning and land development (France, Germany) as well as factors which accompany the establishment of Polish legal solutions. The article is composed of introduction and three parts. The first part shows how law in Europe developed within the context discussed, presenting French and German solutions. The second part is devoted to the analysis of Polish legal solutions and their changes. This parts also shows how citizens’ rights as regards their influence on planning acts and thus on spatial development were shaped. The third part contains summary and final conclusions.
Opakowanie
|
2009
|
tom 54
|
nr 05
10-13
Ustawa o gospodarce opakowaniami i odpadami opakowaniowymi ma zastąpić obowiązujące obecnie dwie ustawy dotyczące opakowań oraz odpadów opakowaniowych - ustawę o obowiązkach przedsiębiorców w zakresie gospodarowania niektórymi odpadami. Projekt ustawy zawiera większość przepisów zawartych w powyższych ustawach. Projekt ustawy nadaje urzędom marszałkowskim możliwość przeprowadzenia kontroli przedsiębiorców. Kontrolę przedsiębiorstw w zakresie przestrzegania przepisów ustawy powierzono również wojewódzkiej inspekcji ochrony środowiska i wojewódzkiej inspekcji handlowej.
Cessation of blood flow in tissues leads to depletion of energetic resources of cells, disturbances in the activity of enzymes of the oxidative chain and electrolyte disorders, as well as to the production of reactive oxygen species. A great deal of attention has been paid to those problems since they are responsible for most of the complications in the ischemia-reperfusion (I/R) syndrome. Understanding the antioxidative mechanisms involved in I/R syndrome provides us with the potential to correct at least some of the resulting disturbances. One of the potentially beneficial factors is insulin. This observation directed our attention to the insulin-like factors, kinins (especially bradykinin), the activation of which was detected in I/R syndrome. The effect of bradykinin is modified by concurrent administration of the specific antagonists of bradykinin receptors, B1 and B2. The aim of the current study was to assess the role of bradykinin. In the study, the employed agents included the angiotensin converting enzyme inhibitor, which prevents the degradation of endogenous kinins, and blockers of bradykinin receptors, which abolish the influence of kinins. We observed that after 4 hours of ischemia followed by reperfusion, levels of free radicals in tissues as well as levels of peroxides in plasma increased significantly. Administration of bradykinin, captopril or enalapril resulted in the decline of these free radical levels. The application of B2 receptor antagonist decreased the beneficial influence of bradykinin, whereas B1 receptor antagonist revealed no significant effect. Activities of antioxidative enzymes (superoxide dismutase, catalase, and glutathione peroxidase) were measured. After 4 hours of ischemia and consecutive steps of reperfusion, a statistically significant increase in their activities was observed when bradykinin or ACE inhibitors were administered. Application of B2 receptor blockers reduced the effect of bradykinin, whereas the effect of B1 receptor antagonists was minute.
Introduction: School anxiety has become a common problem in children and adolescents. Despite numerous studies, it is difficult to definitely identify the cause of neurotic disorders in school-age children. The objective of the presented study was to assess the prevalence of neurotic disorders in rural schoolchildren and the role of physical activity as a method to support their treatment. Material and methods: The study consisted of 123 girls and 117 boys living in rural areas of Wielkopolska. A questionnaire was provided evaluating family status, family relationships, school situation, somatic symptoms related to being at school, and the frequency of physical activity. Results: It was found that over the 50% of children considered the relations with siblings as correct, but also acknowledged that there were a conflict situations in their relationship. Nearly 25% of children indicated an emotional irrelevance with their parents. About 20% of the young people did not like going to school or were afraid to stay there. Over the 50% of children declared somato-emotional problems associated with the being at school. The symptoms of neurotic disorders were more strongly expressed and more common in girls. Analysis of physical activity indicated that only a small group of young people practiced sport regularly, and an even smaller percentage of children exercised with their parents and/or peers. Conclusions: The development of somatic and emotional disturbances in children may be associated with irregular family and school relationships and low physical activity. It was found that gender had a significant influence on most of the studied parameters.
Acute ischemia and the subsequent reperfusion caused by temporary closure of blood flow in the main arteries, which activate generalized inflammatory response, lead to endothelial injury. The aim of the study was to examine the injury of tissues in the ischemia reperfusion syndrome. Additionally, we tried to estimate the role of B1 and B2 bradykinin-receptor antagonists. In our study we histologically assessed specimens of lungs, kidney, liver, small and large intestine and skeletal muscle from the thigh. We compared the samples obtained from the groups of animals that were exposed to 4 hours of complete ischemia and 120 minutes of reperfusion. We divided animals into 4 groups. Rats in the first group were the control group, animals from the second received bradykinin. In the third and fourth group respectively bradykinin along with B2 and B1 bradykinin-receptor antagonist were administered. The results of microscopic examination revealed that bradykinin exerts a protective effect on the function and structure of distant organs as well as the skeletal muscle which was subjected to ischemia and reperfusion. The most visible effects of bradykinin were found in the samples of the lung, skeletal muscle, and the large and small intestines. Administration of bradykinin receptor antagonists, especially B2 receptor blocker, reduces the advantageous effects of bradykinin. The conclusion of our study is that administration of bradykinin may be beneficial in diseases accompanied by limb ischemia where tissue blood flow and oxygen metabolism are dependent upon kinin release, which in turn will condition tissue repair.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.