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981.
Dr. Shubhankar Kumar Bose Andrea Deißenberger Antonius Eichhorn Prof. Dr. Patrick G. Steel Prof. Dr. Zhenyang Lin Prof. Dr. Todd B. Marder 《Angewandte Chemie (International ed. in English)》2015,54(40):11843-11847
A zinc‐catalyzed combined C? X and C? H borylation of aryl halides using B2pin2 (pin=OCMe2CMe2O) to produce the corresponding 1,2‐diborylarenes under mild conditions was developed. Catalytic C? H bond activation occurs ortho to the halide groups if such a site is available or meta to the halide if the ortho position is already substituted. This method thus represents a novel use of a group XII catalyst for C? H borylation. This transformation does not proceed via a free aryne intermediate, but a radical process seems to be involved. 相似文献
982.
Hanwen Huang Yufeng Liu Ying Du Charles M. Perou D. Neil Hayes Michael J. Todd 《Journal of computational and graphical statistics》2013,22(4):953-969
In this article, we extend the binary distance-weighted discrimination (DWD) to the multiclass case. In addition to the usual extensions that combine several binary DWD classifiers, we propose a global multiclass DWD (MDWD) that finds a single classifier that considers all classes at once. Our theoretical results show that MDWD is Fisher consistent, even in the particularly challenging case when there is no dominating class, that is, a class with probability bigger than 0.5. The performance of different multiclass DWD methods is assessed through simulation studies and application to real microarray datasets. Comparison with the support vector machines is also provided. MATLAB implementation of the proposed methods is given in the online supplementary materials. 相似文献
983.
Todd A. Oliynyk 《Annales Henri Poincare》2006,7(2):199-232
We prove the existence of the gravitating BPS monopole in Einstein-Yang-Mills-Higgs (EYMH) theory. Existence is established
using a Newtonian perturbation argument which shows that a Yang-Mills-Higgs BPS monopole solution can be be continued analytically
in powers of 1/c2 to an EYMH solution.
Communicated by Sergiu Klainerman
submitted 2/04/04, accepted 29/08/05 相似文献
984.
IntroductionInadditiontothefamiliarantiparalelWatson-Crickduplexes,itisalsopossibletoformparalelDNAheteroduplexeswithreverseW... 相似文献
985.
Elizabeth Glogowski Ravisubhash Tangirala Thomas P. Russell Todd Emrick 《Journal of polymer science. Part A, Polymer chemistry》2006,44(17):5076-5086
The fluorescent, magnetic, and conductive properties of nanoparticles can transform polymer-based materials into composites with higher levels of sophistication than found in polymers alone. The ligand chemistry of nanoparticles is critically important in the development of polymer–nanoparticle composites to prevent nanoparticle aggregation and direct their assembly within polymers. Nanoparticle ligands can also prevent aggregation in solution and direct the assembly of nanoparticles at fluid–fluid interfaces, where interfacial chemistries can be performed to provide new routes to ultrathin composite sheets and capsules. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 5076–5086, 2006 相似文献
986.
987.
Andrei S. Batsanov Judith A. K. Howard Todd B. Marder Edward G. Robins 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(11):1303-1305
In the title complex, C6F6·C14H12, nearly parallel molecules of trans-stilbene and librationally disordered hexafluorobenzene form a mixed stack, with each molecule lying on an independent inversion centre. Adjacent stacks pack together in a herring-bone manner. 相似文献
988.
We improve estimates for the distribution of primitive λ-roots of a composite modulus q yielding an asymptotic formula for the number of primitive λ-roots in any interval Ⅰ of length |I| (>>) q1/2+∈. Similar results are obtained for the distribution of ordered pairs (x, x-1) with x a primitive λ-root, and for the number of primitive λ-roots satisfying inequalities such as |x -x-1| ≤ B. 相似文献
989.
Andrei S. Batsanov Jonathan C. Collings Judith A. K. Howard Todd B. Marder Dmitrii F. Perepichka 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(11):1306-1307
In the title complex, C10F8·C6H4S4, planar centrosymmetric molecules of tetrathiafulvalene and octafluoronaphthalene, inclined to each other by 9.6 (1)°, form a mixed stack which does not exhibit charge transfer. Adjacent stacks pack in a herring-bone motif. 相似文献
990.
In this paper, the inverse function theorem and the implicit function theorem in a non-Archimedean setting will be discussed. We denote by N any non-Archimedean field extension of the real numbers that is real closed and Cauchy complete in the topology induced by the order; and we study the properties of locally uniformly differentiable functions from Nn to Nm. Then we use that concept of local uniform differentiability to formulate and prove the inverse function theorem for functions from Nn to Nn and the implicit function theorem for functions from Nn to Nm with m<n. 相似文献