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991.
Kochetkova A. S. Sosnov E. A. Malkov A. A. Antipov V. V. Kulikov N. A. Malygin A. A. 《Russian Journal of Applied Chemistry》2019,92(7):883-892
Russian Journal of Applied Chemistry - Effect of a simultaneous thermal treatment at 480°C and X-ray radiation (irradiation dose 10?3 C/kg (~4 R) in a vacuum (residual pressure... 相似文献
992.
Valiullina Z. R. Ivanova N. A. Shitikova O. V. Miftakhov M. S. 《Russian Journal of Organic Chemistry》2019,55(8):1131-1135
Russian Journal of Organic Chemistry - Methyl (Z)-3-[(2R,3R,4S,5S)-5-(2-methoxy-2-oxoethyl)-3,4-(isopropylidenedioxy)tetrahydrofuran-2-yl]-prop-2-enoate was synthesized, and its intramolecular... 相似文献
993.
Abedini A. Armaghani T. Chamkha Ali J. 《Journal of Thermal Analysis and Calorimetry》2019,135(1):685-695
Journal of Thermal Analysis and Calorimetry - In this paper, the effect of a baffle on free convection heat transfer of a water–Fe3O4 nanofluid in a C-shaped enclosure in the presence of a... 相似文献
994.
Pawar Umakant D. Pawar Chandrakant D. Mavle Rajendra R. Pardeshi Rajendra K. 《平面色谱法杂志一现代薄层色谱法》2019,32(5):435-437
JPC – Journal of Planar Chromatography – Modern TLC - A novel chromogenic reagent was developed for the identification and detection of organophosphorus herbicide. The organophosphorus... 相似文献
995.
Phu H. Dang Linh T. T. Nguyen Hue T. T. Nguyen Tho H. Le Truong N. V. Do Hai X. Nguyen 《Natural product research》2019,33(20):2883-2889
From an EtOAc-soluble fraction of the stem barks of Swintonia floribunda (Anacardiaceae), one new dimeric alkylresorcinol named integracin E (1), together with 4 known compounds (2–5) were isolated. Their chemical structures were elucidated based on the spectroscopic data interpretation. The absolute configuration of 1 was determined by the specific rotation analysis of its acid-catalyzed hydrolysis product. Compound 1 showed potent tyrosinase inhibitory activity with an IC50 value of 48.2?μM. 相似文献
996.
Rasmus Havelund Martin P. Seah Ian S. Gilmore 《Surface and interface analysis : SIA》2019,51(13):1332-1341
Four simple methods are evaluated to determine their accuracies for establishing the interface location in secondary ion mass spectrometry intensity depth profiles of organic layers where matrix effects have not been measured. Accurate location requires the separate measurement of each ion's matrix factor. This is often not possible, and so estimates using matrix-less methods are required. Six pure organic material interfaces are measured using many secondary ions to compare their locations from the four methods with those from full evaluation with matrix terms. For different secondary ions, matrix effects cause the apparent interface positions to vary over 20 nm. The shifts in the intensity profiles on going from a layer of P into a layer of Q are in the opposite direction to that for going from Q into P, so doubling layer thickness errors. The four methods are as follows: M1, use of the median interface position in the intensity profiles for the five lightest ions for 15 ≤ m/z ≤ 150; M2, extrapolation of the position for each ion to m/z = 0 for ions with m/z ≤ 150; M3, as M2 but for m/z ≤ 300; and M4, the extreme positions for all m/z ≤ 100. Comparison with the location using matrix terms shows their ranking, from best to worst, to be M4, M3, M1, and M2 with average errors of 10%, 12%, 14%, and 17%, respectively, of the profile interface full widths at half maximum. Use of pseudo-molecular ions is very much poorer, exceeding 50%, and should be avoided. 相似文献
997.
Crystallography Reports - The crystallization processes in solutions modeling the human blood plasma composition have been investigated. It is revealed that the solid phases consist of OH-deficient... 相似文献
998.
Russian Journal of General Chemistry - Modified adsorbents for gas chromatography were prepared using a Cu(II) complex of a camphorsabstituted tetrapyrasinoporphyrazine. The thermal stability of... 相似文献
999.
Smolobochkin A. V. Gazizov A. S. Matylitskii K. V. Vagapova L. I. Burilov A. R. Pudovik M. A. 《Russian Journal of General Chemistry》2019,89(9):1934-1938
Russian Journal of General Chemistry - The acid-catalyzed reaction of {2-[1-(2,2-dimethoxyethyl)-3-(phenylcarboxamido)]ethyl}phosphonate or diethyl... 相似文献
1000.
V. P. Medvedev V. V. Chapurkin A. V. Murzin M. A. Vaniev V. I. Frolova G. V. Medvedev I. A. Novakov 《Polymer Science Series D》2018,11(2):174-178
The curing of oligodienediol with a combined system consisting of a polyisocyanate and a (meth)acrylate-containing compound, which allows it to be structured with the polyisocyanate both at the terminal hydroxyl groups and double bonds due to the (meth)acrylate component, has been studied. The effect of the concentration of the (meth)acrylate component and a peroxide initiator to the degree of cross linking and strength properties of elastomers has been revealed. It has been shown that the participation of oligomer double bonds to form a vulcanization structure, creating the effect of “healing” defects from functional heterogeneity, allows one to increase the degree of cross linking and strength properties of polyurethanes. 相似文献