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Summary  

To compare science growth of different countries is both, of theoretical and of pragmatic interest. Using methods for the analysis of complex growth processes introduced by H. E. Stanley and others, we exhibit quantitative features of Chinese science growth from 1986 to 1999 and compare them with corresponding features of western countries. Patterns of growth dynamics of Chinese universities publication output do not differ significantly from those found in the case of western countries. The same is valid for Chinese journals when compared to international journals. In nearly all cases the size distribution of output over universities or journals is near to a lognormal one, the growth rate distribution is Laplace-like, and the standard deviations of the corresponding conditional distributions with regard to size decay according to a power law. This means that regarding some structural-dynamical properties China's recent science system cannot be distinguished from a western one - despite different prehistory and different political and economic environment.

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A rokonok, barátok, csoporttársak közötti önzetlenség evolúciós elméletei és kutatási eredményei mára a pszichológiai kézikönyvek standard részeit alkotják. Az idegenek iránti támogatás –amely fajunk egyedülálló sajátossága –azonban sokáig nem kapott megfelelő magyarázatot a darwini alapokon álló pszichológiában. Miért vagyunk nagylelkűek azokkal szemben, akik nem a rokonaink, akiktől nem várhatunk viszonzást, sőt akikkel sohasem találkoztunk és feltehetőleg nem is fogunk? Ugyanaz a kérdés másképpen: miért olyan általánosak és erőteljesek valamennyi kultúrában az együttműködés és szolidaritás normái__

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Abstract  

The equation for calculation of the activation energy of the diffusion of the evolved products through the matrix (E) from a single TG curve were proposed by solving Fick's laws. The solution is based on the similarly theory by utilizing a Fourier number. The proposed method was examined by using mass loss data for the dehydroxylation of some micas with and without FeO (muscovite and its varieties and lepidolite) as determined from their TG curves. TheE values for the first stage of the dehydroxylation of these micas areE 1,=85±10 kJ mol−1; for the final stageE 2=380±40 kJ mol−1 and for the mass loss connected with fluorineE F=85±10 kJ mol−1.

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Journal of Thermal Analysis and Calorimetry
Authors: Agnieszka Jabłońska-Wawrzycka, Barbara Barszcz, and Katarzyna Stadnicka

Abstract  

For a comparison of structural data and thermal behaviour of Zn(II) and Cd(II) complexes with biologically important ligand, 2-hydroxymethylbenzimidazole (L) the complex of the formula [ZnL3](NO3)2L0.67L′0.33 was prepared and characterized by elemental analysis, infrared (IR) spectra, single-crystal X-ray diffraction and thermal analysis (where L′ = 2-carbaldehydebenzimidazole). IR and X-ray studies have confirmed a bidentate fashion of coordination of the 2-hydroxymethylbenzimidazole to Zn(II) ion (through the nitrogen atom of heteroaromatic ring and oxygen atom of hydroxymethyl group). The zinc ion is hexacoordinated and the shape of polyhedron can be described as pseudo-octahedron (N3O3 chromophore type). The decomposition process of studied Zn(II) and Cd(II) benzimidazole complexes in the air atmosphere proceeds in three or four main stages and traces structures of complexes. On the basis of the first DTGmax of the decompositions the thermal stability of the complexes follows the order: [CdL3](NO3)2LEtOH0.25 < [CdL2(NO3)2] < [ZnL3](NO3)2L0.67L′0.33. As the final solid products of thermal decomposition suitable metal oxides are formed.

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Abstract  

Some important bibliometric characteristics of chemistry journals were studied. Contrary to expectations, calculations of impact factors asynchronized for shorter and longer periods yield similar values. A new overlap measure for journals is suggested which is based on frequency distribution of references by journals.

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Veress, Z. 1999. Hasonlósági csoportok a fajtaazonosítási vizsgálatokban (Similarity groups in DUS tests). Növénytermelés 48 :471–483. (in Hungarian with English summary) Veress Z

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. 2012. Diversity patterns of vegetation systems from the perspective of similarity theory. Plant Biosyst. 146: 797–804. Feoli E. Diversity patterns of vegetation systems from the

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vegetation systems from the perspective of similarity theory . Plant Biosyst. 146 : 797 – 804 . Feoli , E and P. Ganis. 1985 . Comparison of floristic vegetation types by

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Connor, E.F., Simberlof, D. 1978. Species number and compositional similarity of the Galapagos flora and avifauna. Ecological Monographs 48 :219–248. Simberlof D. Species number and

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Grassle, J.F. and W. Smith 1976. A similarity measure sensitive to the contribution of rare species and its use in investigation of variation in marine benthic communities. Oecologia 25: 13

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