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排序方式: 共有155条查询结果,搜索用时 15 毫秒
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Journal of Mathematical Chemistry - A new implicit-explicit local differential transform method (IELDTM) is derived here for time integration of the nonlinear (2?+?1)-dimensional... 相似文献
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A perturbation method of analysis for the estimation of the stability boundary of symmetric conservative structural systems, whose loss of stability is associated with pre-buckling large deflections, is presented in completely general terms. 相似文献
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Ayfer Yurt Kilcar Fazilet Zumrut Biber Muftuler Huseyin Enginar Volkan Tekin Emin Ilker Medine Perihan Unak 《Journal of Radioanalytical and Nuclear Chemistry》2014,302(1):563-573
Recently, the development of novel brain imaging agents has aroused much interest thanks to limited number of brain cancer or diseases diagnosis agents. It is aimed to synthesize a novel brain imaging agent including a promise for further studies on AD diagnosis potential and investigate its bioaffinity with biodistribution studies on healthy Balb/c mice. A novel radiolabeled agent was synthesized and characterized. Quality control of 99mTc-BH was performed utilizing solvent extraction and chromatographic (Radio TLC and Radio HPLC) methods. Bioaffinity of the 99mTc-BH was investigated on male Balb/c mice at various time points (5, 30, 60, 120 min post-injection). Paper electrophoresis showed that 99mTc-BH has a neutral structure. Radiochemical purity of 99mTc-BH was over 95 % with appropriate stability for imaging period. Selected brain regions have uptakes over 4 % ID/g following intravenous injection. Hippocampus has uptake approximately 10 % ID/g. 99mTc-BH has shown brain uptake, so it may prove to be valuable for brain imaging as a novel technetium-labeled agent. Further investigations with AD animal model are our on going effort to show that this agent has AD diagnosis potential. 相似文献
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Bahri Sahin Huseyin Yilmaz Yasin Ust Ali Fuat Guneri Bahadır Gulsun 《European Journal of Operational Research》2009
One of the important parameters in the determination of optimal transportation system is economy. Therefore, a realistic method based on the technical, economical and operational parameters of various transportation modes, namely, road, railway, and sea routes is required in the analysis of costs. This method will take into consideration the probable price escalations during the lifetime of a certain transportation system. The cost of a unit of cargo or passenger per route length should be considered since it is an indicator of economics. In this paper, an approach for transportation cost analysis based on the economic analysis of the alternative modes of cargo or passenger transportation, is presented. 相似文献
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研究二阶非线性脉冲微分方程边界值问题(BVPI).构造了BVPI的Green函数,并将非线性的BVPI转化为不动点问题,利用Banach不动点定理和Lipschitz条件,证明了该非线性BVPI解的唯一性,最后证明了BVPI解的存在性定理. 相似文献
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Sufficient conditions are given for the asymptotic constancy of the solutions of a linear system of difference equations with
delays. Moreover, it is shown that the limits of the solutions, as t→∞, can be computed in terms of the initial function and a special matrix solution of the corresponding adjoint equation. 相似文献
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We study the existence of oscillatory and periodic solutions of a class of first order scalar impulsive delay differential
equations with piecewise constant argument. 相似文献