Theodor Ernst 《International Journal of Earth Sciences》1948,36(1):39

Ohne Zusammenfassung  相似文献   

Preliminary Interlaboratory Trial for ISO/DIS 12010: Determination of Short Chain Polychlorinated Alkanes (SCCP) in Water     

Sabine Geiß  Nicole Lettmann  Aurélien Rey  Herbert Lepper  Birgit Körner  Silvio Mais  Theodor Prey  Bettina Hilger  Moana Engelke  Stephan Lebertz  Claudine Chatellier  George Sawal  Dirk Löffler  Tom Schillings 《洁净——土壤、空气、水》2011,39(6):537-542

A first preliminary interlaboratory trial was planned to prepare ISO/DIS 12010: Water quality – determination of short chain polychlorinated alkanes (SCCP) in water – method using GC/MS and electron capture negative ionisation (ECNI). The task was to determine the sum of short chain polychlorinated n‐alkanes with carbon chain lengths of C₁₀–C₁₃ and a chlorine content between 49 and 67% in water by GC‐ECNI‐MS and quantification by multiple linear regression described in ISO/DIS 12010 as the compulsory method. Distributed samples were obtained from a real water extract spiked with a target concentration of 0.4 µg/mL sum of SCCP, i.e. the environmental quality target level according to the Water Framework Directive. The interlaboratory trial included the calibration, a column chromatographic clean up, a concentration step and an integration of chromatographic unresolved humps as well as the quantification with multiple linear regression. Reproducibility standard deviations between 21.5 and 22.9% were achieved by 17 participating laboratories from four countries. The method outlined no significant difference of the results between the standard solution and a real water matrix extract. On the basis of this succeeded preliminary interlaboratory trial the final interlaboratory trial for validation of ISO 12010 was prepared in autumn 2010.  相似文献   

Erratum to: Central European Journal of Geosciences, volume 3, number 2     

János Kovács  Szabolcs Á. Fábián  Gábor Varga  Karoly Németh  Corina Risso  Francisco Nullo  Gabor Kereszturi  Titusz Bugya  Szabolcs Á. Fábián  Noémi L. Görcs  István P. Kovács  Bertalan Radvánszky  Gabriella Barta  Rudolf Musil  Alice Ghiselli  Marzio Merazzi  Andrea Strini  Roberto Margutti  Michele Mercuriali  Rauf Gardashov  Daria Gushchina  Boris Dewitte  Martin Michálek  Marián Putiš  Christoph A. Hauzenberger  Jindřich Šancer  Martin Štrejbar  Aneta Maleňáková  George Migiros  George D. Bathrellos  Hariklia D. Skilodimou  Theodoros Karamousalis 《Central European Journal of Geosciences》2011,3(2):229-229

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Die größte heute bekante Tiefe des Weltmeeres     

Theodor Stocks 《Ocean Dynamics》1951,4(4-6):182-184

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Großkreisdifferenzgleichen     

Theodor Stocks 《Ocean Dynamics》1949,2(6):295-298

Summary Echo soundings of the U.S. Cruiser Milwaukee in the Puerto Rico Trough in 1939 are briefly discussed, and two depths of 30246 feet or 9219 m, found at 19° 36 N, 68° 20.5 W and at 19° 35N, 68° 8.75W, are stated to be the greatest depths which are known so far in the Atlantic Ocean.  相似文献   

Schallweicher und schallharter Boden im Bereich des Stoller Grundes (Kieler Bucht) in Beziehung zur Geologie     

Theodor Stocks 《Ocean Dynamics》1952,5(2-3):149-153

Summary Comparisons between three series of echo soundings taken by the survey- and research ships Meteor and Gauss across the shoals of the Stoller Grund and the Gabels Flach in 1934 and 1951 confirm that from the nature of the recorded echo qualitative conclusions in respect to the thickness of soft sedimentary layers can be drawn.

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Fonds amortissant et non-amortissant le son aux alentours du Stoller Grand et du Gabeis Flach (Kieler Bucht) — discutés par rapport à la géologie

Résumé Trois séries de sondages par écho qui furent effectués par dessus les bancs de sables du Stoller Grund et du Gabels Flach (Kieler Bucht) en 1934 et 1951 au bord du Meteor et du Gauss, navires hydrographiques et explorateurs, sont comparées entre elles. Ces comparaisons confirment qu'il est possible de déduire qualitativement de la nature des enregistrements l'épaisseur des couches de sédiments moux.

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In Memoriam     

Theodor Stocks 《Ocean Dynamics》1963,16(2):87-92

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Extrema in Sunspot Cycle Linked to Sun's Motion   总被引：1，自引：0，他引：1  

Landscheidt  Theodor 《Solar physics》1999,189(2):413-424

Partitions of 178.8-year intervals between instances of retrograde motion in the Sun's oscillation about the center of mass of the solar system seem to provide synchronization points for the timing of minima and maxima in the 11-year sunspot cycle. In the investigated period 1632–1990, the statistical significance of the relationship goes beyond the level P=0.001. The extrapolation of the observed pattern points to sunspot maxima around 2000.6 and 2011.8. If a further connection with long-range variations in sunspot intensity proves reliable, four to five weak sunspot cycles (R0) are to be expected after cycle 23 with medium strength (R100).  相似文献   

Ein submariner RÜcken im Arktischen Mittelmeer     

Theodor Stocks 《Ocean Dynamics》1954,7(5-6):198-201

Summary American and Soviet-Russian researches within the range of the so called pole of relative inaccessibility in the polar region are the subject of the foregoing concise report which leads up to the statement that the American explorers were the first to discover the Polar Ridge. Proceeding from the Polar Ridge as such, the existence of which is not in dispute, and considering the cartographic representations by the Russian explorers, it may be convenient to remember here Harris' hypothesis of a possible existence of the so called Harris-Land and to propose to call the recently newly discovered polar ridge—in contrast to the Russian explorers—Harris Ridge instead of Lomonosov Range.

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Une dorsale sousmarine polaire

Résumé Les recherches des savants américains et des explorateurs soviétiques dans le voisinage du »pÔle d'inaccessibilité relative« de la Région Polaire font l'object de ce rapport concis qui a conduit l'auteur à constater que les savants américains furent les premiers à découvrir la Dorsale Polaire. La Dorsale Polaire en soi, dont l'existence n'est pas contestée, et l'étude des représentations cartographiques des explorateurs soviétiques donnent lieu à rappeler ici l'hypothèse de Harris par rapport à la présence eventuelle de la Terre dite Harris. Il convient donc de proposer ici d'appeler cette dorsale sousmarine polaire découverte récemment — contrairement à l'habitude des savants russes—Dorsale Harris au lieu de Chaine Lomonosoff.

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Liapunov instability of the hypoplastic model for soils     

Andrzej Niemunis  Theodor Triantafyllidis 《Soil Dynamics and Earthquake Engineering》2004,24(1):35-48

The hypoplastic constitutive model is known for its numerous application to the problems of soil mechanics and also for its excessive ratcheting. The paper shows that this deficiency can be interpreted as Liapunov instability in dynamic case. This is demonstrated with a simple one-dimensional swinger. Infinitesimally small as well as finite oscillations are analytically examined and the variability of stiffness upon a single cycle is considered. Several methods to circumvent the problem of ratcheting are discussed: implementation of ‘elastic’ range by means of so-called intergranular strain, usage of overlay modelling with parallel coupling of hypoplastic materials as originally proposed by Valanis in his endochronic theory and a special coupling of hypoplastic models based on comparison of partial stiffnesses.  相似文献