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91.
Syroezhko A. M. Begak O. Yu. Proskuryakov V. A. 《Russian Journal of Applied Chemistry》2003,76(5):785-790
A mathematical model of selective oxidation of methylcyclohexane with ozone-oxygen mixtures was substantiated. 相似文献
92.
T. P. Trofimova A. N. Pushin A. N. Proshin A. I. Stash A. A. Mandrugin V. M. Fedoseev S. Ya. Proskuryakov 《Chemistry of Heterocyclic Compounds》2007,43(3):370-376
A simple and convenient method is proposed for the synthesis of 2-amino-5-hydroxymethylthiazolines with various substituents
in the amino group, which is based on hydrolysis of the corresponding 5-halomethyl derivatives of thiazoline in the presence
of divalent lead oxide.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 456–463, 2007. 相似文献
93.
Prof. Dr. Andreas Gansäuer Dr. Daniel von Laufenberg Dr. Christian Kube Tobias Dahmen Antonius Michelmann Dr. Maike Behlendorf Rebecca Sure Meriam Seddiqzai Prof. Dr. Stefan Grimme Dr. Dhandapani V. Sadasivam Godfred D. Fianu Prof. Dr. Robert A. Flowers II 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(1):280-289
An atom‐economical and catalytic arylation of epoxide‐derived radicals is described. The key step of the catalytic system is a sequential electron and proton transfer for the rearomatization of the radical σ‐complex and catalyst regeneration. Kinetic, computational, spectroscopic, and cyclovoltammetric investigations highlight the key issues of the reaction mechanism and catalyst stabilization by collidine hydrochloride. Studies employing radicophiles rule out the participation of cations as reactive intermediates. 相似文献
94.
The ν3 band of UF6 isolated in solid xenon is shown to consist of a single sharp spectral feature. 相似文献
95.
Platonov V. V. Proskuryakov V. A. Polovetskaya O. S. Shavyrina O. A. Ryl'tsova S. V. 《Russian Journal of Applied Chemistry》2001,74(1):157-161
The chemical composition of organic bases from tars of stepwise semicoking of lignite was studied. The features of distribution of organic nitrogen in a coal macromolecule and the most probable pathways of thermal degradation of the nitrogen-containing fragments were examined. 相似文献
96.
James J. Devery III James J. Douglas John D. Nguyen Kevin P. Cole Robert A. Flowers II Corey R. J. Stephenson 《Chemical science》2015,6(1):537-541
Knowledge of the kinetic behavior of catalysts under synthetically relevant conditions is vital for the efficient use of compounds that mediate important transformations regardless of their composition or driving force. In particular, these data are of great importance to add perspective to the growing number of applications of photoactive transition metal complexes. Here we present kinetic, synthetic, and spectroscopic evidence of the mechanistic behavior of fac-Ir(ppy)3 in a visible light-mediated radical addition to 3-methylindole, demonstrating the instability of fac-Ir(ppy)3 under these conditions. During the reaction, rapid in situ functionalization of the photocatalyst occurs, eventually leading to deactivation. These findings demonstrate a conceivable deactivation process for catalytic single electron reactions in the presence of radicophilic ligands. Attempts to inhibit photocatalyst deactivation through structural modification provide further insight into catalyst selection for a given system of interest. 相似文献
97.
An experimental investigation was conducted on the performance and boundary layer characteristics of the Wortmann FX 63-137 airfoil with and without trip wire roughness. Data were obtained through use of a three-component strain gage force balance and static pressure measurement equipment at a test Reynolds number of R c = 100,000. Emphasis was placed on determining the effect of trip wire placement and size on such performance parameters as (C l /C d )max and (C l 3/2 /C d )max. Prediction of transition location by the criterion due to Tani and Gibbings was found to have limited application. Most trip wire locations resulted in degraded performance, but for some locations, minimum drag was reduced, maximum lift to drag ratio increased, and hysteresis averted. 相似文献
98.
Chang Kun Soo Soo Kim Byoung Yoo II 《Numerical Functional Analysis & Optimization》2013,34(1-2):97-105
Yeh defined a convolution of functionals on classical Wiener space and investigated the relationship between the Fourier-Wiener transforms of functionals in certain classes and the Fourier-Wiener transform of their convolution. Yoo extended Yeh's results to abstract Wiener space. In this paper, we introduce the intergal transform and convolution of analytic functionals on abstract Wiener space. And we establish the relationship between the integral transforms of exponential type of analytic functionals and the integral transform of theor convolution. Also we obtain Parseval's and Plancherel's relations for those functionals from this relationship. The main results of Yeh and Yoo then follow from our results as corollaries. 相似文献
99.
The United States Code (Code) is a document containing over 22 million words that represents a large and important source of Federal statutory law. Scholars and policy advocates often discuss the direction and magnitude of changes in various aspects of the Code. However, few have mathematically formalized the notions behind these discussions or directly measured the resulting representations. This paper addresses the current state of the literature in two ways. First, we formalize a representation of the United States Code as the union of a hierarchical network and a citation network over vertices containing the language of the Code. This representation reflects the fact that the Code is a hierarchically organized document containing language and explicit citations between provisions. Second, we use this formalization to measure aspects of the Code as codified in October 2008, November 2009, and March 2010. These measurements allow for a characterization of the actual changes in the Code over time. Our findings indicate that in the recent past, the Code has grown in its amount of structure, interdependence, and language. 相似文献
100.
This paper provides a survey of both old and new results aboutminimal surfaces and submanifolds. 2000 Mathematics SubjectClassification 54C40, 14E20 (primary), 46E25, 20C20 (secondary). 相似文献