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The natural history of respiratory system function

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Lung growth starts in the first year of life. Between 20-30 years of age, man achieves the maximum FEV1. Some years later, maximum FVC is achieved. After the phase of a dynamic increase, lung function stabilizes for a while. Thereafter, it starts declining slowly in some individuals or increasing in others. The third and last phase of lung function changes during a lifetime begins between 40-45 years of life. The FEV1 and some years later also FVC diminish with a varied speed during this period. Changes in FVE1 and FVC in the third phase are slower at the beginning and accelerate in the six or seventh decade of life. There are some differences between males and females concerning the lung function profile. Female lung function starts decreasing earlier than that in male individuals. There are also pronounced interindividual differences in lung function among individuals of a similar age and body height.
Descriptive epidemiologic studies on the geographical distribution of gastrointestinal diseases in Poland have been conducted in our country since several decades. One of the first descriptive analyses was cancer study in 1967, where age-standardized mortality rates in various regions of Poland by gender and area of residence (urban/rural) were presented. Since 1970 analytical epidemiologic studies aiming at explaining the natural course of various diseases within gastrointestinal tract started to produce interesting results. The first study in this field was the case-control study on the occurrence of peptic ulcer and tobacco smoking performed in 1974. The study provided one of the first epidemiologic evidence on the harmful effect of tobacco smoking in the etiology or peptic ulcers. Subsequent studies dealt with the importance of dietary habits and life style (tobacco smoking and vodka drinking) in the occurrence of gastric cancer. The studies confirmed previous findings that consumption of raw vegetables and fresh fruit is inversely related to risk for stomach cancer in Poland. In addition the results demonstrated, that dietary practices such as the modality of cooking the food, preparation of food products and storing conditions were connected with stomach cancer risk. These factors have also been found to influence the risk for stomach cancer in Poland. The main message of this latter study was that the family as a whole is affected by many risk factors for stomach cancer and families in which stomach cancer has occurred should be therefore targets for preventive measures. Interestingly, analysis of life style factors such as tobacco smoking or vodka drinking has showed that the risk for cardia cancer increased considerably for smokers of cigarettes without filters and in those who consumed large amounts of vodka. For the non-cardia region a uniform increase of risk could be observed for vodka drinking, regardless of cigarette smoking status. The findings of this study suggested the hypothesis that the effect of tobacco smoking and vodka drinking may be different for cardia cancer compared to the distal cancers. Our clinico-epidemiological study suggest that infection with Helicobacter pylori is not sufficient factor for inducing precancer changes in gastric mucosa. Besides, case-controls studies on dietary habits and physical activity level in the etiology of colorectal cancer are in progress. The preliminary results demonstrated the protective effect of higher physical activity in the occurrence of colorectal cancer after accounting for nutritional habits.
Mounts of four digenean forms designated by Prudhoe and Bray 1973 only to the genera or family were re-examined. "Opecoelidae (sp. indet.)" = Neolebouria terranovaensis Zdzitowiecki, Pisano et Vacchi, 1993. "Helicometra sp." = Helicometra antarcticae Holloway et Bier, 1968. "Stenakron sp. indet." = Stenakron glacialis Zdzitowiecki, 1989. "Neolepidapedon sp." =Neolepidapedon macquariensis sp. n. Specimens of "Neolepidapedon sp." (= probably N. macquariensis sp. n.) collected from Notothenia mizops are accompanied on the slide with other digeneans, Postmonorchis variabilis Prudhoe et Bray, 1973.
Eleven new species of the family Mysmenidae occurring in China, in addition to one known species, Mysmenella gongi Yin, Peng et Bao, 2004, that was reported from Hunan Province, are diagnosed, described and illustrated. Three genera, i.e., Calodipoena, Mysmena, and Trogloneta, are firstly reported in China. Mysmenella pseudojobi sp. nov., where is found hitherto at the northest range of distribution of the family in China, and Trogloneta denticocleari sp. nov. is collected in caves. Mysmena spirala sp. nov. is collected from rainforest in Hainan Province. Calodipoena biangulata sp. nov., C. cornigera sp. nov., Mysmena zhengi sp. nov., M. rostella sp. nov., M. furca sp. nov., M. arcilongus sp. nov., Mysmenella menglunensis sp. nov. and Trogloneta speciosum sp. nov., from Xishuangbanna in Yunnan Province, are collected by fogging. Natural history and distributional map are provided.
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