Modelling magnetization processes in single-and multi-domain rock samples using the preisach diagram     

Pavel Hejda  Vladimír Kropáček  Tomáš Zelinka 《Studia Geophysica et Geodaetica》1990,34(3):220-229

Summary The paper presents the results of identifying a model of the Preisach type for haematite grains of the single-domain as well as multi-domain size. Due to the phenomenological conception of the model, the relations between the parameters of the model and actual parameters are very complex, however, impressive accuracy and stability of the modified model indicate the need to resume studies of this problem. The model parameters also confirm the adequate properties of the vibrating-sample magnetometr (VSM) used and developed in our laboratories.  相似文献   

Chemicals applied for water treatment and disinfection. (in Czech.), Ministry of Forestry and Water Management of the Czech Socialist Republic,Methodical Advice No 64, Prague, 1988, p. 133 (not on market)     

V. Slde ek  A. Slde kov 《洁净——土壤、空气、水》1990,18(5):616-616

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Biology of Waste Treatment Processes (Biologie čistírenských procesů). Methodical Advise of the Czech Ministry of Forestry and Water Management 66, Prague, 1989, p. 100, in Czech,not on market     

V. Slde ek  A. Slde kov 《洁净——土壤、空气、水》1991,19(6):602-602

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Microbial Activity of Bottom Sediments in a Stabilization Pond     

M. Jane ek  M. Vin&#x;ov  H. Macurov 《洁净——土壤、空气、水》1991,19(6):635-647

The Pond of Dvorec, used for a final treatment of waste waters and at the same time for fish breeding, has been observed working in an assimilation and later on in a stabilization mode (SVOBODA and KOUBEK) . The data on the chemical composition and microbiological properties of its sediments are given. A comparative analysis of the stabilization pond sediments and the sediments of the second stabilization pond have shown a high purification function. An influence of temperature, aeration and thickness of the layer upon a microbial activity and a release of the substance into the water environment were verified in laboratory experiments. A higher layer of sediments can, above all at increased temperatures, negatively influence the water quality for fish breeding. After composting the drawn pond sediments can be recommended for the fertilization of an agricultural land in near surroundings.  相似文献   

Biological Evaluation of Surface Sources of Drinking Water. (In Slovakian)-Information Bulletin of the Ministry of Forestry,Water Management and Timber Industry of the SSR,Bukovec 1989, p. 128, not on market.     

V. Slde ek  A. Slde kov 《洁净——土壤、空气、水》1991,19(6):737-737

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V. KRUPAUER,J. BICAN and K. DRBAL (Eds.): Extracted Sand Pits: Man-made Ecosystems of Třeboň Biosphere Reserve. - Studie CSAV 13. 90, Praha,Academia, 1990, Kčs 35,-     

V. Slde ek  A. Slde kov 《洁净——土壤、空气、水》1991,19(6):739-739

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River bottom. 2nd national seminar on river bottom.-Czechoslovak Limnological Society,branch Brno,and Geographical Institute of the Czechoslovak Academy of Sciences,Brno, Kupařovice 1990, p. 87, not on market.     

V. Slde ek  A. Slde kov 《洁净——土壤、空气、水》1991,19(6):741-742

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J. HÄUSLER (Ed.): Transport von Mikroorganismen in das Wasser aus dem Bewuchs,aus den Sedimenten,von Ufern und aus dem Abwasser. (Tschechisch) - Kommission für die Wasser-mikrobiologie,Sammelband 19, Ostrava 1990, p. 211, Nicht im Buchhandel.     

V. Slde ek  A. Slde kov 《洁净——土壤、空气、水》1991,19(6):747-748

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B. Botev,B. Russev i Sv. Gerasimov: Problemy fonofogo ekologičeskogo monitironga (Problems of the Background Ecological Monitoring). (in Russian with english summaries). Second School of biological monitoring. Sofia,Publ. House Bulgarian Acad. Sci., 1987, p. 177, graphs,tables, Lv 1.73     

V. Slde ek 《洁净——土壤、空气、水》1989,17(1):36-36

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Technical Hydrobiology–Biology of Purification Processes. (in Czech.) Collected Papers from a Seminar,September 17–18, 1987 in Frýdek-Místek. Czech Scientific-Technical Society, 1987, p. 245, not on market     

V. Slde ek 《洁净——土壤、空气、水》1989,17(1):86-86

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