Die sogenannte „chemische Theorie“ der gegenseitigen Einwirkung von Ionen in der Lösung und in einer Grenzfläche. Ein Beitrag zu einer allgemeinen Theorie solcher Wechselwirkungen

Ohne Zusammenfassung Aus einer Presidential Adress. Uebersetzt von W. R?diger (Leipzig).     

QSAR studies on anti-apoptotic Bcl-2 protein inhibitors

QSAR studies on a series of inhibitors for anti-apoptotic Bcl-2 proteins based on BHI-1 were performed the activities are found to correlate well with some topological parameters and steric parameters. The results are critically discussed on the basis of regression data, Pogliani factor Q and cross validation technique. The results are found to be useful in discussing the mechanism of drug–receptor interaction.     

Computational prediction of grain size during rapid laser surface modification of Al–O ceramic

The aim of this letter is to present a model including the fundamental non‐equilibrium effects to predict the microstructure evolution during the rapid solidification of laser surface modified Al–O ceramic system to understand grain growth and the physical process involved during the treatment. The obtained data is then compared with the actual measurements from micrographs. This approach is novel compared to other work in the similar field which have looked at the process only at the macroscopic level that included the extractions of macroscopic features such as melt depth and width. Such study is important as laser surface modification can be extended to dressing of alumina grinding wheel material, a part of the Al–O ceramic system. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)     

On the null-spaces of acyclic and unicyclic singular graphs

For acyclic and unicyclic graphs we determine a necessary and sufficient condition for a graph G to be singular. Further, it is shown that this characterization can be used to construct a basis for the null-space of G.     

Thermal effect and equation of state in solids

In the present paper, an attempt has been made to include the thermal effect into an isothermal equation of state using the Debye approximation representing volume as a function of pressure. The calculations are done in case of NaCl, CsCl, Mo, and W. The present calculations are in good agreement with the reported results.     

Displacement potential solution of stiffened composite struts subjected to eccentric loading

The elastic behavior of stiffened struts of orthotropic composite material is investigated under an eccentric loading using displacement potential formulation. Solutions are obtained for different aspect ratios of the strut where the fibers are assumed to be directed along the axis of the struts. Solutions of stresses and displacements of boron/epoxy composite struts are presented numerically in the form of graphs. The effects of material orthotropy and different stiffeners on the elastic field are also investigated. Finally, some of the results of the present solution are compared with the corresponding finite element predictions, which, in turn, establishes the soundness as well as reliability of the present analysis of the composite struts.     

Application of Wiener-Hopf technique to linear nonhomogeneous integral equations for a new representation of Chandrasekhar's H-function in radiative transfer, its existence and uniqueness

In this paper, the linear nonhomogeneous integral equation of H-functions is considered to find a new form of H-function as its solution. The Wiener-Hopf technique is used to express a known function into two functions with different zones of analyticity. The linear nonhomogeneous integral equation is thereafter expressed into two different sets of functions having the different zones of regularity. The modified form of Liouville's theorem is thereafter used, Cauchy's integral formulae are used to determine functional representation over the cut region in a complex plane. The new form of H-function is derived both for conservative and nonconservative cases. The existence of solution of linear nonhomogeneous integral equations and its uniqueness are shown. For numerical calculation of this new H-function, a set of useful formulae are derived both for conservative and nonconservative cases.