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171.
Similar to the antibiotic mixing strategies, which depend on reducing the worth of diffusion of the resistant bacteria to new host, in this contribution, we explicit new mixed-ligand complexes of the type [M(SMZ)2(BZM)] (M = Co(II), Ni(II) and Cu(II)) based on two drugs: sulfamethazine (SMZ) and bromazepam (BZM). The novelty aspect of the present work relies on combining two drugs in a single molecule via the synthesis of the ternary complexes. The ternary complexes were characterized by spectroscopic and analytical tools with the aid of the quantum chemical calculations. Copper(II) complex has the highest DNA intrinsic binding constant (2.20 × 105 M−1), induces extensively DNA cleavage compared to the other complexes, and exhibits the highest cytotoxicity (IC50 = 0.67 μM) against human liver cancer cell line (HepG2). Exciting, Cu(II) compound exhibits no toxicity to the nonmalignant human foetal lung fibroblast (WI-38). Alternatively, the low cytotoxicity of the Co(II) complex correlates well with the high affinity of the compound to human serum albumin (Kb = 4.58 × 105) compared to 1.93 × 105 and 2.14 × 105 M−1 for Ni (II) and Cu (II) complexes, respectively. 相似文献
172.
Structural Chemistry - The reaction of the anti-Criegee intermediate (anti-CI) of β-pinene with prevalent atmospheric species has been investigated using quantum-chemical calculations. The... 相似文献
173.
Hamzeh Agahi Esfandiar Eslami Adel Mohammadpour S. Mansour Vaezpour Mohammad Ali Yaghoobi 《Results in Mathematics》2012,61(1-2):179-194
Non-additive measure is a generalization of additive probability measure. Integral inequalities play important roles in classical probability and measure theory. Some well-known inequalities such as the Minkowski inequality and the H?lder inequality play important roles not only in the theoretical area but also in application. Non-additive integrals are useful tools in several theoretical and applied statistics which have been built on non-additive measure. For instance, in decision theory and applied statistics, the use of the non-additive integrals can be envisaged from two points of view: decision under uncertainty and multi-criteria decision-making. In fact, the non-additive integrals provide useful tools in many problems in engineering and social choice where the aggregation of data is required. In this paper, H?lder and Minkowski type inequalities for semi(co)normed non-additive integrals are discussed. The main results of this paper generalize some previous results obtained by the authors. 相似文献
174.
Given a collection of connected graphs one may build bridge and chain graphs out of them. In this paper it is shown how the
Wiener, hyper-Wiener, detour and hyper-detour indices for bridge and chain graphs are determined from the respective indices
of the individual graphs. The results obtained are illustrated by some examples. 相似文献
175.
Samir Adly Maïtine Bergounioux Mohamed Ait Mansour 《Journal of Global Optimization》2010,47(3):421-435
We consider an optimal control where the state-control relation is given by a quasi-variational inequality, namely a generalized
obstacle problem. We give an existence result for solutions to such a problem. The main tool is a stability result, based
on the Mosco-convergence theory, that gives the weak closeness of the control-to-state operator. We end the paper with some
examples. 相似文献
176.
177.
A number of β-Aroyl-α-aryl-N-arylbutyramides (4a-h) have been synthesized using a new methodology involving arylation at the Ã,β-unsaturated ketonic systems of N-aryl-citraconisoimidium perchlorates (2a-c), followed by a subsequent ring opening via addition on the carbonyl group to give the title compounds (4a-h). 相似文献
178.
179.
A well‐known conjecture in topological graph theory says that the genus distribution of every graph is log‐concave. In this paper, the genus distribution of the circular ladder is re‐derived, using overlap matrices and Chebyshev polynomials, which facilitates proof that this genus distribution is log‐concave. 相似文献
180.
A.Y. Bakier A.M. Rashad M.A. Mansour 《Communications in Nonlinear Science & Numerical Simulation》2009,14(5):2160-2170
The linear transformation group approach is developed to simulate problem of hydromagnetic heat transfer by mixed convection along vertical plate in a liquid saturated porous medium in the presence of melting and thermal radiation effects for opposing external flow. The application of a one-parameter transformation group reduces the number of independent variables by one so that the governing partial differential equations with the boundary conditions reduce to an ordinary differential equations with appropriate corresponding conditions. The Runge-Kutta shooting method is used to solve the determining equations of the set of nonlinear ordinary differential equations. are presented in the form of the temperature and flow fields in the melting region within the boundary layer for different parameters entering into the analysis. Also the effects of the pertinent parameters on the rate of the heat transfer in terms of the local Nusselt number at the solid–liquid interface are also discussed. 相似文献