排序方式: 共有174条查询结果,搜索用时 15 毫秒
81.
Štrbac Goran R. Petrović Jelena S. Štrbac Dragana D. Čajko Kristina Lukić-Petrović Svetlana R. 《Journal of Thermal Analysis and Calorimetry》2018,134(1):297-306
Journal of Thermal Analysis and Calorimetry - The glass transition temperature dependence on a heating rate was investigated by differential scanning calorimetry for chalcogenide glasses from the... 相似文献
82.
Manić Vesna Manić Goran Stojanović Miloš Radojković Branko Krstić Dragana Nikezić Dragoslav 《Journal of Radioanalytical and Nuclear Chemistry》2021,329(2):671-677
Journal of Radioanalytical and Nuclear Chemistry - The activity concentration of natural radionuclides in the samples of soil from the town of Ni? were measured using the gamma spectroscopy... 相似文献
83.
Stefan Nikolić Sanja Grgurić-Šipka Ivana S. Djordjević Rahma Dahmani Dragana Dekanski Sašenka Vidičević 《Journal of Coordination Chemistry》2019,72(1):148-163
In search for antitumor metal-based drugs that would mitigate the severe side-effects of cisplatin, Ru(II) complexes are gaining increasing recent interest. In this work, we report on the synthesis, characterization (1H- and 13C-NMR, FT-IR), and cytotoxicity studies of two new half-sandwich organometallic Ru(II) complexes of the general formula [Ru(η6-arene)(XY)Cl](PF6) where arene?=?benzene or toluene and XY?=?bidentates: dipyrido[3,2-a:2′,3′-c]phenazine (dppz) or 2-(9-anthryl)-1H-imidazo[4,5-f][1,10]phenanthroline (aip), which are bound to Ru(II) via two phenanthroline-N atoms in a characteristic “piano-stool” configuration of Ru(II)-arene complexes—as confirmed by vibrational and NMR spectra. In addition, cytotoxic studies were performed for similar half-sandwich organometallic [Ru(η6-p-cymene)(Me2dppz)Cl]PF6 complex (Me2dppz = 11,12-dimethyl-dipyrido[3,2-a:2′,3′-c]phenazine). This study is complemented with elaborate modeling with density functional theory (DFT) calculations, which provided insight into reactive sites of Ru(II) structures, further detailed by molecular docking on the B-DNA dodecamer, which identified binding sites and affinities: most pronounced for the [Ru(η6-benzene)(aip)Cl](PF6) in both A-T and G-C regions of the DNA minor groove. Cytotoxic activity was probed versus tumor cell lines B16, C6, and U251 (B16 mouse melanoma, C6 rat glioma, U251 human glioblastoma) and non-tumor cell line HACAT (HACAT normal human keratinocytes). 相似文献
84.
Petrović Milena J. Rakočević Vladimir Valjarević Dragana Ilić Dejan 《Numerical Algorithms》2020,85(2):449-465
Numerical Algorithms - We introduce a hybrid gradient model for solving unconstrained optimization problems based on one specific accelerated gradient iteration. Having applied a three term... 相似文献
85.
86.
Dragana S. Cvetkovi?-Ili? 《Applied mathematics and computation》2009,213(1):18-24
In this paper we give representations of the Drazin and MP-inverse of a 2×2 block matrix and quotient identities for the generalized Schur complement of a partitioned 3×3 matrix under conditions different than those used in recent papers on the subject. We present numerical examples to illustrate our results. 相似文献
87.
88.
Dragana Živković Aleksandra Mitovski Ljubiša Balanović Dragan Manasijević Živan Živković 《Journal of Thermal Analysis and Calorimetry》2010,102(3):827-830
The results of calorimetric investigations of liquid In–Sn alloys using Oelsen calorimetry are presented in this article.
Based on obtained enthalpy space diagram and enthalpy isotherm diagram, thermodynamic parameters for the liquid In–Sn alloys,
including mixing and excess integral and partial molar quantities at temperature of 600 K, have been determined and compared
with available literature data. 相似文献
89.
Dragana S. Cvetkovi?-Ili? Chun Yuan Deng 《Journal of Computational and Applied Mathematics》2010,233(8):1717-1722
In this note, some equivalents are established of the Drazin invertibility of differences and sums of idempotent operators on a Hilbert space. 相似文献
90.
Babić Sandra Horvat Alka J. M. Mutavdžić Dragana Čavić Dalibor Kaštelan-Macan Marija 《平面色谱法杂志一现代薄层色谱法》2007,20(2):95-99
JPC – Journal of Planar Chromatography – Modern TLC - Optimization of microwave-assisted extraction (MAE) as a method of sample preparation in thin-layer chromatographic (TLC) analysis... 相似文献