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21.
KM Varier AM Vinodkumar NVSV Prasad PV Madhusudhana Rao DL Sastry Lagy T Baby MC Radhakrishna NG Puttaswamy JJ Das P Sugathan N Madhavan AK Sinha DO Kataria 《Pramana》1999,53(3):529-533
Large enhancements have been observed in the sub-barrier fusion cross sections for Ti+Ni systems in our previous studies.
Coupled channel calculations incorporating couplings to 2+ and 3− states failed to explain these enhancements completely. A possibilty of transfer channels contributing to the residual enhancements
had been suggested. In order to investigate the role of relevant transfer channels, measurements of one- and two-nucleon transfer
were carried out for 46,48Ti+61Ni systems. The present paper gives the results of these studies. 相似文献
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We describe a novel three-pulse experimental arrangement for the simultaneous generation and subsequent resolution of all four electric-dipole allowed vibrational sum frequency generation polarization combinations. For noncentrosymmetric and achiral systems, this represents full characterization of all symmetry-allowed elements of the second-order susceptibility, providing a comprehensive intensity level assessment of the system under study. By measuring all relevant signals simultaneously, this approach enables assessment of molecular orientation and structure in dynamic, temporally evolving systems that were previously inaccessible by means of sequentially scanned acquisition of the individual tensor elements. 相似文献
24.
Achille Cappiello Giorgio Famiglini Antonietta Lombardozzi Alessandro Massari Gianni Giulio Vadalà 《Journal of the American Society for Mass Spectrometry》1996,7(8):753-758
A method for the analysis of four widely used explosives based on reversed-phase liquid chromatography coupled to a quadrupole mass spectrometer is presented. A microflow rate particle beam interface was employed that offers simplified operation procedures and improved interfacing performance. A positive role played by the reduced size of the aerosol droplets generated by the microflow rate interface is outlined in this work. Greater vaporization efficiency and negligible thermal decomposition were observed for the selected compounds in the ion source of the mass spectrometer. Electron capture ionization allowed specific and sensitive determination of the analytes. Detection limits that ranged between 60 and 200 pg and had a signal-to-noise ratio of 5:1 were obtained in selected ion monitoring mode after column elution. 相似文献
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We study a variational approach, called Generalized Minimizing Movemenents (GMM) and proposed by E. De Giorgi, to evolution
of hypersurfaces by mean curvature in the case of a Dirichlet boundary datum. We prove an existence theorem of a GMM when
on the initial solid are made suitable geometric hypotheses.
Sunto Si studia un approccio variazionale, detto Movimenti Minimizzanti Generalizzati (GMM) e proposto da Ennio De Giorgi, per l’evoluzione di una ipersuperficie secondo la curvatura media con un dato al bordo di tipo Dirichlet. Viene provato un teorema di esistenza quando sul solido iniziale siano fatte opportune ipotesi di tipo geometrico.相似文献
28.
We study a variational approach, called Generalized Minimizing Movements (GMM), to evolution of hypersurfaces by mean curvature
in the case of a Dirichlet boundary datum. We prove an existence theorem of a GMM when on the initial solid are made suitable
geometric hypotheses.
Sunto In questo lavoro studiamo un approccio variazionale, detto Movimenti Minimizzanti Generalizzati (GMM), all’evoluzione di ipersuperfici per curvatura media nel caso di dato al bordo di Dirichlet. Dimostriamo un teorema di esistenza per un GMM quando vengono assunte ipotesi opportune sul solido iniziale.相似文献
29.
Özge Pala Dirk J Vriens Jac AM Vennix 《The Journal of the Operational Research Society》2015,66(4):593-601
Escalation of commitment, the tendency of decision makers to keep on investing in losing courses of action, has been shown to be a costly decision bias that affects many areas of decision making. Even though escalation is a widely studied phenomenon, there has been comparatively little research on how to avoid this bias. The present study focuses on de-escalation of commitment and proposes that causal loop diagrams (CLDs) can help to decrease escalating commitment to a failing course of action. By means of an experiment, this study shows that using a CLD decreases escalation tendencies. 相似文献