Some theoretical aspects of the use of isotopic exchange in a heterogeneous liquid system for radiochemical separations

Theoretical possibilities of the application of isotopic exchange in a heterogeneous liquid system to the separation of radionuclides have been investigated. With certain simplifying assumptions, equations were derived which enable the calculation of both the separation efficiency and volume concentration for a one-stage separation process under static or dynamic conditions. The relations obtained can be used in the choice of an appropriate method for the separation and simultaneous enrichment of trace amounts of radionuclides from large-volume liquid samples by equilibrium isotopic exchange.     

Complexes of N, S donor ligands. CoII, CoIII, MnIII, FeIII and PdII complexes of 1, 2-di( o -aminophenylthio)ethane: Synthesis, characterisation and reactions

The ligand 1,2-di(o-aminophenylthio)ethane (abbreviated as H₂DAPTE) has been allowed to react with various metal salts and the complexes isolated and characterised. In these complexes, H₂ DAPTE behaves as a neutral quadridentate and also as a dibasic quadridentate ligand after losing two protons from the amine functions. Two complexes of this ligand, reported earlier, have been condensed with acetone to form macrocyclic complexes of TDDH where TDDH is 13, 13, 15-trimethy1-2,5-dithia-12, 16-diazatricyclo-[15,3,0,0,6,11]-docosa-1(17), 6(11), 7,9,15,18,20-heptene.     

Inverse beta decay of arbitrarily polarized neutrons in a magnetic field

We calculate the cross-section of the inverse beta decay process,v _e+n → p+e, in a background magnetic field which is much smaller than m _p ^2/e . Using exact solutions of the Dirac equation in a constant magnetic field, we find the cross-section for arbitrary polarization of the initial neutrons. The cross-section depends on the direction of the incident neutrino even when the initial neutron is assumed to be at rest and has no net polarization. Possible implications of the result are discussed.     

Quark recombination in deuteron fragmentation

Low-P _T production off deuteron in the fragmentation region is studied on the basis of a six-quark picture of deuteron. It is argued that all the six valence quarks participate equally in the hadronization processes associated with meson and baryon productions. Thex-distribution of the inclusive cross sections is studied in the framework of a quark recombination model. Fit with experimental data leads to a determination of the valence and sea quark distributions in deuteron. Probabilistic arguments applied to a general recombination picture are shown to lead to some experimentally verifiable constraints on baryon multiplicities. Possibilities of determining the various recombination probabilities are also discussed.     

Stress tensor and energy flux in slow steady-state flow of a monatomic gas

On the basis of the linearized kinetic Choh-Uhlenbeck equation the stress tensor and energy flux are found in the gasdynamic approximation for steady states of a monatomic gas with allowance for the first virial correction to the transport coefficients. Moscow. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 1, pp. 155–164, January–February, 1997.     

Resource,service quality and performance triad: a framework for measuring efficiency of banking services

In this paper, we present the development of a theoretical framework for measuring the efficiency of banking services taking into account physical and human resources, service quality and performance. Expenditures on quality improvement efforts and the impact of service quality on financial outcomes have long intrigued researchers. Banks have traditionally focused on how to transform their physical resources to generate financial performance, and they inadvertently ignored the mediating intangible factor of service quality. A theoretical framework on the optimization triad of resource, service quality and performance is proposed here, thereby linking the marketing variables to the financial metrics. A measure for the return on quality is developed as the ratio of the potential improvements in financial performance by enhancement of service quality to the observed performance figures. Empirical results obtained from a study of 27 Indian public sector banks and their customers allow us to measure the impact of service quality on financial performance, optimal level of service quality that can be generated using existing resources and the opportunity cost for sub-optimal service delivery. Banks delivering better service are shown to have better transformation of resource to performance using superior service delivery as the medium. Our results confirm the linkage between resource, service quality and performance for services.