Actual questions of Waterworks Biology 1987. (in Czech), collected papers from a seminar held on January 15, 1987 in Prague,Prague, Czech Scientific-Technical Society, 1987, p. 183, not on market     

V. Slde ek 《洁净——土壤、空气、水》1989,17(1):112-112

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Radioactive and trace element distribution in basaltic rocks of Lower Silesia     

Vladimír Kropáček  Věra Vaňková  Reviewer J. Fiala 《Studia Geophysica et Geodaetica》1985,29(3):290-299

Summary The distribution of radioactive(Th, U, K) and selected trace(Rb, Sr, Ba, Y, Zr, V, Cr, Ni) elements in volcanic rocks from the Opole and Jawor regions of the Lower Silesia has been studied. The behaviour of these elements in the studied rocks indicates that the Lower Silesian volcanic rocks are characterized by less differentiated type than other volcanic rocks of the Bohemian Massif, the Opole rock types probably having a less differentiated character than the Jawor rock types.

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¶rt;a an¶rt;u a¶rt;uamu(Th, U, K) u m ¶rt;u(Rb, Sr, Ba, Y, Zr, V, Cr, Ni) m auu n¶rt;a am n u u uuu. a n mam n¶rt;num, m aum u uuu n¶rt;mam ¶rt; aamuu n¶rt; u ¶rt;uuau, aum u ana¶rt; uu. au a n¶rt;num, m auu n¶rt; amu n ¶rt;uuau ma ua n¶rt; u amu .

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STELLA,E.: Fondamenti di Limnologia. Guida allo studio delle acque continentali. Con la collaborazione di F. G. MARGARITORA e G. MURA. Roma,Edizioni dell' Ateneo, 1984. 300 S., 78 Abb., 26 Farbphotos, 4 schwarz-weiß Photos, 12 Tab., Lire 30.000     

V. Slde ek 《洁净——土壤、空气、水》1985,13(2):222-222

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HUBER-PESTALOZZI,G.: Das Phytoplankton des Süßwassers. Chlorophyceae (Grünalgen), Ordnung Chlorococcales,von J. KOMÁBEK und B. FOTT. Die Binnengewässer 16 (7. Teil, 1. Hälfte). Stuttgart,Schweizerbart'sche Verlagsbuchhandlung, 1983. 1044 S., 253 Abb     

V. Slde ek 《洁净——土壤、空气、水》1985,13(2):244-244

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RGW-Symposium über die technische Hydrobiologie     

V. Slde ek 《洁净——土壤、空气、水》1985,13(2):264-266

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P. M. JONASSON (Ed.): Ecology of eutrophic,subarctic Lake Mývatn and the River Laxá. — Published by the Icelandic Literature Societty ib Copenhagen, 1984, 308 S., zahlr. Abbildungen und Farbphotographien     

V. Slde ek 《洁净——土壤、空气、水》1985,13(4):488-488

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КРИТИКА     

František Anýž 《Studia Geophysica et Geodaetica》1984,28(3):321-322

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Fault interaction and seismicity: Laboratory investigation and its seismotectonic interpretation   总被引：2，自引：0，他引：2  

A. piák  T. Lokajíek 《Pure and Applied Geophysics》1986,124(4-5):857-874

Systems of two parallel linear faults of the same length with the angle of inclination =45° were investigated under uniaxial linearly increasing load. Perspex plates were used as models. For each treated fault configuration the morphology of tensile cracks and the sequence of seismoacoustic events of shear and tensile origin were studied.It is shown that the seismic regime of a fault system is strongly influenced by the contact conditions on a fault plane; it is different in the faults with the aseismic contact, represented by open slits, and in the faults with the seismoactive contact, represented by filled slits, respectively.The experiments proved the dominating role of a fast shear displacement of the stick-slip type in the regime of seismic energy release of a fault system. The tensile crack generation seems to be only of little—if not negligible—importance. On the other hand, the existence of tensile cracks in a fault system can play an important role in the course of subsequent loading cycles because the stick-slip displacements can take place not only along the primary faults but also along the planes of tensile cracks.A comparison of some results of model experiments and the already published results of geological and seismological investigations indicated that the way of seismic energy relase on faults in nature and in the laboratory could be of the same character. Several analogies between the seismic regime of a fault model and of real seismic regions were found concerning the morphology of faults, off-fault fore- and aftershocks, and earthquake doublets, respectively.  相似文献   

The effect of quartz on the magnetic anisotropy of quartzite     

František Hrouda  Reviewer A. Kapička 《Studia Geophysica et Geodaetica》1986,30(1):39-45

Summary The magnetic susceptibility of quartz single crystals is diamagnetic (–14×10 ^–6 in SI units) and exhibits only very small anisotropy (mostly less than 1%); thus the susceptibility of the quartz matrix in quartzite can be regarded as virtually isotropic. Owing to the influence of the negative and isotropic susceptibility of the quartz matrix, the degree of anisotropy of quartzite, as inferred from model calculations, is higher than that of the ferrimagnetic fraction. This influence is very strong if the mean susceptibility of quartzite is in the vicinity of zero.

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uma aa m ¶rt;uaaumu (nuuum–14 × 10 ^–6 um ) u a aumnuu ( 1%). m aum, m nuuum a a auma m m numa namuu umn. amamu ¶rt;uau ¶rt;m, m n nuu uu muam u umn nuuumu a a mn aumnmu auma , mn aumnmu aum auu. m uu au m¶rt;a, ¶rt;a ¶rt;a nuuum ua .

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Diatoms as Indicators of Organic Pollution     

V. Slde ek 《洁净——土壤、空气、水》1986,14(5):555-566

There is given a list of 323 taxa of freshwater diatoms occurring in waters of Central Europe. Each taxon is characterized by 10 balls of saprobic valence, the indicative weight of species (I_i) and by the individual saprobic index (S_i) indicating its position on a conventional scale of saprobity. Diatoms are very common aquatic organisms, but are only medium or bad indicators of saprobity, because their saprobic valence is usually wide.  相似文献