Hrsg.: B. BÖHNKE: Automatisierte Meßwertsammlung und Datenverarbeitung in Chemischen und Biologischen Laboratorien bei der Untersuchung von Wasser und Abwasser. Gewässerschutz — Wasser — Abwasser. Band 68, 1984. Gesellschaft zur Förderung d. Siedlungswasserwirtschaft an d. RWTH Aachen, 1984, 259 S., DM 35.—     

R. Koch 《洁净——土壤、空气、水》1985,13(3):318-318

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R. E. KAISER und A. RACKSTRAW: Computer Chromatography. Volume 1. Heidelberg,Dr. Alfred Hüthig Verlag, 1983. 171 S., 43 Abb., 11 Tab., DM 54.—     

R. Koch 《洁净——土壤、空气、水》1985,13(5):566-566

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Eds.: Henri LECLERC et Daniel DIVE: Les tests de toxicité aigue en milieu aquatique. Acute aquatic ecotoxicological tests. Les Editions INSERM (Institut National de la Sante et de la Recherche Medicale), Paris, 1982, 599 Seiten,Preis: F 176.55     

R. Koch 《洁净——土壤、空气、水》1984,12(5):538-538

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Possible influences of solar radiation variations on the atmospheric circulation in the northern hemisphere of the earth     

Manfred Schmidt 《Climatic change》1986,8(3):279-294

The strength of the circumpolar zonal circulation of the atmosphere in the northern hemisphere, expressed by an index calculated from the air pressure gradient between 35° N and 65°N, shows a remarkable secular change in this century in the years 1935 to 1938, and probably again in the years after 1970. A contemporary change and parallel course with a high positive correlation can be found in a solar radiation index calculated by means of sunspot numbers and solar faculae areas. A good correlation was also found between this solar radiation index and a series of UV measurements on Mt. Wilson. The possible mechanism of action in the atmosphere will be discussed, and it is shown that this solar radiation index is also correlated with circulation parameters in the troposphere and stratosphere over Europe. There are indications of a decrease of the action from the upper to the lower atmosphere. The consequences of this secular change of circulation for the climatic history in the 20th century in Europe are presented and from that a hypothetical retrospective view of the European climatic history before the 20th century, based on the total series of sunspot numbers, is briefly discussed. In a general view with smoothed data it can be concluded that the sun seems to determine the basic structure of the north hemispheric circulation in middle latitudes, if a strong influence of sunspots and solar faculae on the solar radiation is assumed.  相似文献   

Pattern-Recognition-Verfahren in der Umweltanalytik und Ökotoxikologie: Methodische Grundlagen     

D. Feiler  M. Nagel  E. Stottmeister  R. Koch 《洁净——土壤、空气、水》1986,14(4):335-346

Modern methods of analyses of environment yield multivariate data sets of measured objects which are used as the basis of the evaluation and interpretation of substances, differentiated effects, but also of samples or processes. The integrated evaluation and assessment of such multivariate data requires the application of mathematical-statistical methods, the method of pattern recognition being particularly suitable. Pattern recognition program systems constitute a compilation of different methods, as e.g. the multivariate linear regression, classification methods (discriminant analysis, multivariate variance analysis), cluster algorithms, multidimensional scaling, factorial analysis. A few possibilities of such pattern comparisons and identifications are represented by the example of gas chromatography and of the structure/effect analysis for the mutagenity to be expected of 117 substances.  相似文献   

U. Rohmann und H. Sontheimer: Nitrat im Grundwasser: Ursachen – Bedeutung – Lösungswege. Karlsruhe,Univ., DVGW-Forschungsstelle am Engler-Bunte-Institut, 1985, 468 S.     

R. Koch 《洁净——土壤、空气、水》1987,15(3):321-321

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Annual Book of ASTM Standards, 1980. Part 31, — Water —. Philadelphia,Pa., American Society for Testing and Materials, 1980, 1404 S., $ 47.00     

R. Koch 《洁净——土壤、空气、水》1982,10(2):203-204

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Sittig,M., Pesticide Manufacturing and Toxic Materials Control Encyclopedia. Park Ridge,N. J., Noyes Data Corporation, 1980, 810 S., 96.–$     

R. Koch 《洁净——土壤、空气、水》1982,10(4):338-338

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Correlation of the Quaternary terrace sequence in the Lower Rhine valley and northern Alpine foothills of central Europe     

Karl Brunnacker  Manfred Löscher  Wolfgang Tillmanns  Brigitte Urban 《Quaternary Research》1982,18(2):152-173

Thirteen glacial terraces are known from the western part of the northern Alpine foothills between the Lech and Iller Rivers. In the Lower Rhine region of West Germany, a similar number of terraces are capped by interglacial floodloams and soils. Whereas the environment during individual interglaciations did not differ substantially, the glaciations were progressively more severe. The Main Terrace system of the Rhine may be an exception. The duration of the Quaternary, starting at the base of Praetiglian, is estimated at approximately 2 million yr by paleomagnetic dating. The major cold-warm climatic cycles of the earliest Pleistocene lasted approximately 100,000 yr, the same as those of the Brunhes Chron. The intervening Main Terrace system has not yet been climatically subdivided. Correlation with the Netherlands is possible because of an abundance of paleobotanic and paleomagnetic evidence. In the Alpine foothills, stratigraphically useful indicators of warm climates are missing, but analogies in terrace development permit comparison with the Lower Rhine and Danube. The terrace sequence in the Alpine foothills is incomplete, as are those along most of the other rivers in Europe. Some of the older terraces may have been eroded.  相似文献   

Molekular Connectivity Indizes als strukturchemische Stoffparameter ökotoxikologischer Relevanz     

R. Koch 《洁净——土壤、空气、水》1983,11(5):511-522

The molecular connectivity index developed by Randic as a numerical expression characterizes the position and bond of atoms in the molecular structure. Since significant correlations between the molar refraction as well as electron polarizability and ecotoxicologically relevant parameters of substances were determined in the preceding investigations, such connections are investigated also for this index and sorption coefficients, bioconcentration factors and toxicity data. By the example of 56 differentiated organic substances, significant regression relations are demonstrated between bioconcentration factors, sorption coefficients and toxicity data as well as the valency molecular connectivity indices. By these regressions it is possible to determine essential distribution and action parameters of chemical substances from the structure for assesing an ecotoxicological risk. The possibilities resulting from this for predicting ecotoxicologically relevant parameters of substances are discussed.  相似文献