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11.
Hümeyra Paaolu Ahmet Karada Fatma Tezcan Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(2):m93-m94
In the novel transition metal isothiocyanate complex of N‐(2‐hydroxyethyl)ethylenediamine (hydet‐en) with copper, [Cu(NCS)2(C4H12N2O)], the Cu atom lies in a distorted square‐pyramidal environment, coordinated by four N atoms in the basal plane and an apical O atom. The hydet‐en ligand is N,N,O‐tridentate, in contrast to the disposition in previously studied complexes, while the isothiocyanate ions act as N‐atom donor ligands. The monomeric units are linked to one another by hydrogen bonds. 相似文献
12.
Bertan Tezcan 《今日电子》2009,(1)
DisplayPort是视频电子标准协会(Video Electronic Standards Association-VESA)新的接口标准,简化了显示设计及其相关的连接.它还以强大的电气特性支持更高的分辨率.虽然从目前的应用来看,DisplayPort接口主要应用于笔记本和显示器,但其也适用于数字电视等很多嵌入式和内部应用. 相似文献
13.
A general model with multiple input flows (classes) and several flexible multi-server pools is considered. We propose a robust, generic scheme for routing new arrivals, which optimally balances server pools’ loads, without the knowledge of the flow input rates and without solving any optimization problem. The scheme is based on Shadow routing in a virtual queueing system. We study the behavior of our scheme in the Halfin–Whitt (or, QED) asymptotic regime, when server pool sizes and the input rates are scaled up simultaneously by a factor r growing to infinity, while keeping the system load within \(O(\sqrt{r}\,)\) of its capacity.The main results are as follows. (i) We show that, in general, a system in a stationary regime has at least \(O(\sqrt{r}\,)\) average queue lengths, even if the so called null-controllability (Atar et al., Ann. Appl. Probab. 16, 1764–1804, 2006) on a finite time interval is possible; strategies achieving this \(O(\sqrt{r}\,)\) growth rate we call order-optimal. (ii) We show that some natural algorithms, such as MaxWeight, that guarantee stability, are not order-optimal. (iii) Under the complete resource pooling condition, we prove the diffusion limit of the arrival processes into server pools, under the Shadow routing. (We conjecture that result (iii) leads to order-optimality of the Shadow routing algorithm; a formal proof of this fact is an important subject of future work.) Simulation results demonstrate good performance and robustness of our scheme. 相似文献
14.
We consider a parallel server system that consists of several customer classes and server pools in parallel. We propose a
simple robust control policy to minimize the total linear holding and reneging costs. We show that this policy is asymptotically
optimal under the many-server heavy traffic regime for parallel server systems when the service times are only server pool
dependent and exponentially distributed.
J.G. Dai’s research supported in part by National Science Foundation grants CMMI-0727400 and CNS-0718701, and by an IBM Faculty
Award. 相似文献
15.
C. Tezcan M.Ç. Güleçyüz A. Ka?ka? 《Journal of Quantitative Spectroscopy & Radiative Transfer》2007,103(3):611-619
The HN method, which is developed recently, is used to solve the half-space albedo and the half-space constant source problems for both isotropic and extremely anisotropic scattering kernels. It has been shown that the method solves the problems in a concise manner and leads to fast converging numerical results as shown in tables. 相似文献
16.
Substituted rosamines are efficiently prepared through a new organometallic addition to an imine-substituted xanthone as a novel primary amine equivalent. The synthesis reduces the number of synthetic steps to the targeted rosamines, for convenient and facile access to potential libraries of rosamine dyes. The prepared rosamine derivatives represent unique multifunctional platforms that possess radiolabeling capability and fluorescence. Rosamines have (i) useful non-specific binding properties in mammalian cells and plant root hair, and (ii) positive uptake or binding properties in microbial systems. 相似文献
17.
Ramazan Sever Cevdet Tezcan Metin Aktaş Özlem Yeşiltaş 《Journal of mathematical chemistry》2008,43(2):845-851
Exact solution of Schr?dinger equation for the pseudoharmonic potential is obtained for an arbitrary angular momentum. The
energy eigenvalues and corresponding eigenfunctions are calculated by Nikiforov–Uvarov method. Wavefunctions are expressed
in terms of Jacobi polynomials. The energy eigenvalues are calculated numerically for some values of ℓ and n with n ≤ 5 for some diatomic molecules.
相似文献
18.
Salgado EN Lewis RA Faraone-Mennella J Tezcan FA 《Journal of the American Chemical Society》2008,130(19):6082-6084
We have previously demonstrated that non-self-associating protein building blocks can oligomerize to form discrete supramolecular assemblies under the control of metal coordination. We show here that secondary interactions (salt bridges and hydrogen bonds) can be critical in guiding the metal-induced self-assembly of proteins. Crystallographic and hydrodynamic measurements on appropriately engineered cytochrome cb562 variants pinpoint the importance of a single salt-bridging arginine side chain in determining whether the protein monomers form a discrete Zn-induced tetrameric complex or heterogeneous aggregates. The combined ability to direct PPIs through metal coordination and secondary interactions should provide the specificity required for the construction of complex protein superstructures and the selective control of cellular processes that involve protein-protein association reactions. 相似文献
19.
20.
Controlling the Structure and Length of Self‐Synthesizing Supramolecular Polymers through Nucleated Growth and Disassembly
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Dr. Asish Pal Dr. Morteza Malakoutikhah Giulia Leonetti Meniz Tezcan Mathieu Colomb‐Delsuc Dr. Van Duc Nguyen Prof. Jasper van der Gucht Prof. Sijbren Otto 《Angewandte Chemie (International ed. in English)》2015,54(27):7852-7856
Directing self‐assembly processes out‐of‐equilibrium to yield kinetically trapped materials with well‐defined dimensions remains a considerable challenge. Kinetically controlled assembly of self‐synthesizing peptide‐functionalized macrocycles through a nucleation–growth mechanism is reported. Spontaneous fiber formation in this system is effectively shut down as most of the material is diverted into metastable non‐assembling trimeric and tetrameric macrocycles. However, upon adding seeds to this mixture, well‐defined fibers with controllable lengths and narrow polydispersities are obtained. This seeded growth strategy also allows access to supramolecular triblock copolymers. The resulting noncovalent assemblies can be further stabilized through covalent capture. Taken together, these results show that self‐synthesizing materials, through their interplay between dynamic covalent bonds and noncovalent interactions, are uniquely suited for out‐of‐equilibrium self‐assembly. 相似文献