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991.
Jang HO Park YS Lee JH Seo JB Koo KI Jeong SC Jin SD Lee YH Eom HS Yun I 《Natural product research》2007,21(9):787-797
Although safflower seeds have long been used in Korea as herbal medicines, very little research has been published on the effects of safflower seed on bone formation or bone density. The study reported here therefore examined bone nodule formation, calcium uptake, alkaline phosphatase activity, and intracellular concentration of calcium ion [Ca(2+)](i) in murine osteoblastic cells of the MC3T3-E1 line that were cultured on modified Eagle's minimal essential medium alone (controls) or with addition of 0.1% crude extract of safflower seed (experimental group I) or 0.1% aqueous fraction of safflower seed (experimental group II). Fluorescence spectrometry measurement of ([Ca(2+)](i)) showed significantly accelerated rates of osteoblast differentiation in experimental group I (3 microL of crude extract in 8 x 10(4) cells) and experimental group II (2 microL of aqueous fraction in 8 x 10(4) cells) compared to the control group. 相似文献
992.
A geometric-selective synthesis of (E)-beta-iodo Morita-Baylis-Hillman esters has been developed through a three-component aldol-type reaction using BF3.Et2O and TMS-I. The synthetic utility of the (E)-beta-iodo Morita-Baylis-Hillman esters was demonstrated in the first reported short synthesis of secokotomolide A. 相似文献
993.
Lee JY Kwon J Park CS Lee JE Sim W Kim JS Seo J Yoon I Jung JH Lee SS 《Organic letters》2007,9(3):493-496
[reaction: see text] Calix[4]thiacrowns with hetero-L(1) and a homodonor set (L(2)) were synthesized and characterized by X-ray analysis. From the reaction of L(2) with AgPF(6), disilver complex [Ag(2)(L(2))](PF(6))(2) (1) was isolated. By comparing 1,3-alternate conformations of L(2) and 1, we found a considerable decrease of dihedral angles of two opposite aromatic rings upon complexation. This finding can be explained in terms of the "chopsticks process", which illustrates how Ag(+)-arene pi-coordination occurs. Heterobinuclear complexation of L(1) in solution was also observed. 相似文献
994.
I. V. Il’ina K. P. Volcho D. V. Korchagina V. A. Barkhash N. F. Salakhutdinov 《Russian Journal of Organic Chemistry》2007,43(1):56-59
Acid-catalyzed transformations of (-)-myrtenal epoxide over askanite-bentonite clay involve skeletal rearrangements of the pinane framework, leading to an optically active dialdehyde (an analog of campholenic aldehyde), aldehydes having a p-menthane skeleton, and an unusual optically active aldehyde with a bicyclo[3.2.1]octene skeleton. 相似文献
995.
Mochalov M. A. Il’kaev R. I. Fortov V. E. Erunov S. V. Arinin V. A. Blikov A. O. Ogorodnikov V. A. Ryzhkov A. V. Komrakov V. A. Kudel’kin V. G. Maksimkin I. P. Gryaznov V. K. Iosilevskiy I. L. Levashov P. R. Minakov D. V. Paramonov M. A. 《Journal of Experimental and Theoretical Physics》2021,132(6):985-998
Journal of Experimental and Theoretical Physics - We present data on the quasi-isentropic compressibility of a strongly coupled (nonideal) plasma of a deuterium–helium mixture in the range of... 相似文献
996.
A. V. Korzhak N. I. Ermokhina A. L. Stroyuk V. I. Litvin V. K. Bukhtiyarov P. A. Manorik V. G. Il’in 《Theoretical and Experimental Chemistry》2005,41(1):26-31
TiO2/Ni metal-semiconductor composites were prepared from mesoporous titanium dioxide obtained by sol-gel precipitation in the presence of a structure-forming template. The photocatalytic activity of mesoporous TiO2/Ni composites in the generation of hydrogen from aqueous ethanol mixtures was discovered and studied in detail.__________Translated from Teoreticheskaya i Éksperimentalnaya Khimiya, Vol. 41, No. 1, pp. 24–29, January–February, 2005. 相似文献
997.
998.
D. V. Sudarikov Yu. V. Krymskaya N. O. Il’chenko P. A. Slepukhin S. A. Rubtsova A. V. Kutchin 《Russian Chemical Bulletin》2018,67(4):731-742
Fluorine-containing N-substituted sulfinamides were synthesized via 4-caranethiol-based sulfenimines and sulfinimines. Stereochemical features of oxidation of sulfenimines and addition of fluorine-containing reagents to sulfinimines were discussed. Antimicrobial activities of the obtained compounds were screened. 相似文献
999.
Using data form Chemical Abstracts Plus, Web of Science, Scopus, and Russian Science Citation Index, a bibliometric and thematic analysis of scientific publications by V.A. Parmon, full member of the Russian Academy of Sciences, is made. 相似文献
1000.
M. P. Arinina V. A. Kostenko I. Yu. Gorbunova S. O. Il’in A. Ya. Malkin 《Polymer Science Series A》2018,60(5):683-690
Diaminodiphenyl sulfone is used as a curing agent to obtain an epoxy-resin-based binder with improved thermal stability. The kinetics of curing of this composition is studied by rheokinetic and calorimetric methods. It is shown that complete conversion is attained at a temperature of 200°С or higher. The rate of viscosity increase in the course of time in curing under flow conditions does not depend on the shear rate; the viscosity changes monotonically. The curing reaction occurs in the homogeneous mode without separation of a crosslinked polymer; it is described by a second-order equation with self-deceleration at low temperatures. The rheokinetic characteristics and temperature dependences of kinetic parameters of the process are determined. 相似文献