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971.
Yana Yu. Shmoylova Yuri A. Kovygin Irina V. Ledenyova Mikhail A. Prezent Sergey V. Baranin Khidmet S. Shikhaliev 《Mendeleev Communications》2021,31(2):254-256
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972.
Chelnokova Irina A. Golubewa L. N. Starodubtseva M. N. Kulahava T. A. Kunitskaya Y. N. Bulai P. M. Starodubtsev I. E. Kharin Yu. S. Shuba M. V. 《Journal of nanoparticle research》2020,22(6):1-16
Journal of Nanoparticle Research - Benefited from their broad-spectrum antimicrobial property, silver nanoparticles (AgNPs) have been widely used in various daily life and medical products.... 相似文献
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974.
Kseniya V. Arsenyeva Maxim G. Chegerev Anton V. Cherkasov Kira I. Pashanova Irina V. Ershova Olesya Yu. Trofimova Alexandr V. Piskunov 《Mendeleev Communications》2021,31(3):330-333
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975.
Tatiana N. Rudneva Olga S. Zhukova Gennady V. Shilov Irina O. Chikileva Michael V. Kisilevskii Nataliya A. Sanina 《Journal of Coordination Chemistry》2019,72(5-7):972-986
Single-crystals of binuclear neutral sulfur-nitrosyl iron complex with 2-mercaptobenzthiazole ligand [Fe2(С7н4NS2)2(NO)4] (BTz) have been obtained. From X-ray data, BTz has a centrosymmetric dimeric structure, with the iron atoms being linked through the µ-N-C-S bridge. As follows from mass-spectra of the BTz gas phase, the complex is stable in the crystalline state under normal conditions (ambient temperature and standard humidity) and releases nitric oxide upon heating. Using amperometry, kinetics of NO release by BTz in 1% dimethyl sulfoxide aqueous solution has been studied: release of NO was shown to occur immediately upon dissolution in protic media. BTz inhibited growth of K562 leukemia and SKOV3 ovarian carcinoma cells in vitro and induced apoptosis via activation caspases 3 and 7. 相似文献
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978.
The relativistic HALA effect has been shown to depend on the spatial deformation of the lone electron pairs of a heavy atom, as demonstrated for alkyl and alkene phosphine tellurides. It was found that HALA effect on phosphorous nuclear magnetic resonance shielding constant is strongly dependent on the spatial arrangements of light substituents on phosphorus, resulting in the deformation of the lone electron pairs of tellurium. 相似文献
979.
Previously unknown manifestation of heavy atom effect on the NMR chemical shifts of β- and γ-protons initiated by the relativistic effects of the tellurium and selenium atoms has been investigated in the representative series of selenium- and tellurium-containing compounds. To approve the four-component density functional approach to be the appropriate tool for the investigation of the heavy atom on light atom effect (HALA), the benchmark calculations of the proton chemical shifts have been performed at the CCSD level using comprehensively chosen locally dense basis set with taking into account solvent, vibrational, and relativistic corrections. A good agreement with the experimental data was achieved. The magnitudes of the relativistic HALA corrections to β- and γ-proton chemical shifts were found to vary in a wide range, namely from −3.08 ppm for the γ-proton of methyltelluraldehyde to 14.51 ppm for β-proton in benzotelluraldehyde. 相似文献
980.
Rodica Mariana Ion Irina Dumitriu Radu Claudiu Fierascu Mihaela-Lucia Ion Simona Florentina Pop Constantin Radovici Raluca Ioana Bunghez V. I. R. Niculescu 《Journal of Thermal Analysis and Calorimetry》2011,104(2):487-493
The selected sample for this study represents a piece of pavement ceramics from a private collection. The ceramic (approximately
XVIIIth century) comes from Campania region, Naples province. A chemical, mineralogical and morphological characterization
of a Campagna ceramic piece received from a particular collection has been performed. Inductively coupled plasma-atomic emission
spectroscopy—(ICP-AES) was used for the determination of Al2O3, CaO, Fe2O3, K2O, MgO, MnO, Na2O, and TiO2 as major constituents and Cu, Cr, Ni, Pb, and Zn as minor and trace selected elements. There is a very important characterization
method used for the control of the reaction process and of the properties of the materials obtained. Physical and mineralogical
analyses were made by using the thermal behavior (thermogravimetric analysis (TG) and differential thermal analysis (DTG))
and X-ray diffraction spectrometry for the mineralogical composition. The results of these analyses allow the establishment
of conclusions about several aspects of their manufacture, the origin of the raw materials and their provenance (local or
imported). They provide information supporting certain archeological hypothesis. The performed analysis revealed some very
interesting characteristics: lower amount of silica and increased concentration of alumina, the presence of calcium in relatively
low concentration (Ca-poor ceramic) and a mineralogical composition. 相似文献