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71.
72.
Krishnaveni NS Surendra K Reddy MA Nageswar YV Rao KR 《The Journal of organic chemistry》2003,68(5):2018-2019
Aromatic acetals have been deprotected to the corresponding aldehydes under biomimetic conditions for the first time using beta-cyclodextrin in water under neutral conditions, thereby overcoming many of the drawbacks associated with earlier methodologies. This method, apart from being simple with regard to recycling of the catalyst, also has the potential for industrial applications. 相似文献
73.
Dr. Ilaria Gamba Iria Salvadó Gustavo Rama Miriam Bertazzon Mateo I. Sánchez Prof. Víctor M. Sánchez‐Pedregal Prof. José Martínez‐Costas Rosa F. Brissos Prof. Patrick Gamez Prof. José L. Mascareñas Prof. Miguel Vázquez López Prof. M. Eugenio Vázquez 《Chemistry (Weinheim an der Bergstrasse, Germany)》2013,19(40):13369-13375
A new bipyridine building block has been used for the solid‐phase synthesis of dinuclear DNA‐binding ruthenium(II) metallopeptides. Detailed spectroscopic studies suggest that these compounds bind to the DNA by insertion into the DNA minor groove. Moreover, the potential of the solid‐phase peptide synthesis approach is demonstrated by the straightforward synthesis of an octaarginine derivative that shows effective cellular internalization and cytotoxicity linked with strong DNA interaction, as evidenced by steady‐state fluorescence spectroscopy and AFM studies. 相似文献
74.
Stress analysis of a non-gasketed flange was computationally simulated by a finite-element method and probabilistically evaluated
in view of several uncertainties in the performance parameters. Cumulative distribution functions and sensitivity factors
were computed for overall heat transfer rate due to the structural and thermodynamic random variables. These results can be
used to quickly identify the most critical design variables in order to optimize the design and make it cost effective. The
analysis leads to the selection of the appropriate measurements to be used in structural and heat transfer analysis and to
the identification of both the most critical measurements and parameters
Published in Prikladnaya Mekhanika, Vol. 44, No. 5, pp. 133–143, May 2008. 相似文献
75.
Y. Rama Krishna Sarma 《Annals of the Institute of Statistical Mathematics》1987,39(1):497-512
Summary In this note some asymptotically optimum tests for testing hypotheses concerning parameters when the observations are dependent
are obtained. Test statistics based on the score functions, similar to the one proposed by Rao in the case when the observations
are i.i.d. are proposed. Asymptotically UMP tests for one sided hypotheses against one sided alternatives and asymptotically
UMP unbiased test for a simple hypothesis against two sided alternatives are derived. In the multiparameter case tests for
simple hypotheses that have asymptotically best constant power on some family of surfaces in the parameter space are derived. 相似文献
76.
We derive a change of variable formula for non-anticipative functionals defined on the space of Rd-valued right-continuous paths with left limits. The functionals are only required to possess certain directional derivatives, which may be computed pathwise. Our results lead to functional extensions of the Itô formula for a large class of stochastic processes, including semimartingales and Dirichlet processes. In particular, we show the stability of the class of semimartingales under certain functional transformations. 相似文献
77.
Various empirical theories of ultrasonic velocity have been applied to three binary liquid mixtures, under pressures up to
200 MPa and their validity have been tested. A pressure dependent study of ultrasonic velocities has been made at 303.15 K.
The agreement between theory and experiment is found to be quite satisfactory. 相似文献
78.
79.
80.
C B Dwivedi 《Pramana》2000,55(5-6):849-854
Theoretical prediction of a new kind of normal mode behaviour of electro-mechanical nature was first time reported by Dwivedi
and Das in 1992 in the context of mesospheric modeling of observed neutral induced turbulence. Local dynamo action (due to
relative neutral flow) governs the basic physical principle for linear excitation of the neutral induced low frequency instability
(NILF) in mesospheric plasma, which comprises of weakly ionized inhomogeneous gas confined by the external gravity and ambient
magnetic field. The present contribution offers physical explanation in terms of dynamo transformation of neutral drag effect
as a source to understand complete suppression of the usual collisional R-T and in turn linear driving of the NILF. It is
therefore emphasized, worth calling it as the dynamo instability. 相似文献