排序方式: 共有14条查询结果,搜索用时 15 毫秒
1.
Zh. Ganbaatar B. Gantumur S. A. Osadchii E. E. Shul’ts M. M. Shakirov G. A. Tolstikov 《Chemistry of Natural Compounds》2008,44(5):578-581
The potentially medically valuable pyranocoumarin (+)-pteryxin was isolated for the first time from Peucedanum terebinthaceum Fischer et Turcz. The structure of (+)-pteryxin was rigorously proved using mass spectrometry, NMR, IR, and UV spectroscopy
and comparison of the spectral characteristics of this compound and its basic hydrolysis products (+)-cis- and (−)-trans-khellactone and angelic and acetic acids.
Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 468–470, September-October, 2008. 相似文献
2.
A protocol to correct for intra‐ and interspecific variation in tail hair growth to align isotope signatures of segmentally cut tail hair to a common time line 下载免费PDF全文
3.
G. D. Alkhazov K. A. Mezilev Yu. N. Novikov N. Ganbaatar K. Ya. Gromov V. G. Kalinnikov A. Potempa E. Sieniawski F. Tarkanyi 《Zeitschrift für Physik A Hadrons and Nuclei》1983,310(3):247-247
β + -ray endpoint energies for mass-separated samples of neutron deficient Rare-Earth isotopes have been measured using an intrinsic germanium detector. QEC values have been obtained and new isomeric states have been identified for the first time. 相似文献
4.
5.
Martina Burnik Šturm Oyunsaikhan Ganbaatar Christian C. Voigt Petra Kaczensky 《Isotopes in environmental and health studies》2017,53(2):157-171
For certain remote areas like Mongolia, field-based precipitation, surface and ground water isotopic data are scarce. So far no such data exist for the Mongolian Gobi desert, which hinders the understanding of isotopic fractionation processes in this extreme, arid region. We collected 26 event-based precipitation samples, 39 Bij river samples, and 75 samples from other water bodies in the Dzungarian Gobi in SW Mongolia over a period of 16 months for hydrogen and oxygen stable isotope analysis. δ2H and δ18O values in precipitation show high seasonal variation and cover an extreme range: 175?‰ for δ2H and 24?‰ for δ18O values. The calculated local meteoric water line (LMWL) shows the isotopic characteristics of precipitation in an arid region. Individual water samples fall into one of three groups: within, above or below the 95?% confidence interval of LMWL. Data presented provide a basis for future studies in this region. 相似文献
6.
G. D. Alkhazov K. A. Mezilev Yu. N. Novikov V. N. Panteleyev A. G. Polyakov V. P. Afanasyev N. Ganbaatar K. Ya. Gromov V. G. Kalinnikov J. Kormicki A. Latuszynski A. Potempa J. Sieniawski F. Tarkanyi Yu. V. Yushkevich 《Zeitschrift für Physik A Hadrons and Nuclei》1982,308(2):185-186
High resolution laser-atomic-beam spectroscopy was applied to study crossed-second-order effects in the isotope shift of the terms 4f75d6s a10D and a8D for151Eu-153Eu. The term dependent effects lead to a difference in the isotope shift of the terms a10D and a8D of 415(20) MHz. The J dependent effects are interpreted through the use of one parameter z5d for each term; z5d(a10D)=41(7)MHz, z5d(a8D)=50(26)MHz. 相似文献
7.
E.?E.?Shul?tsEmail author Zh.?Ganbaatar T.?N.?Petrova M.?M.?Shakirov I.?Yu.?Bagryanskaya V.?V.?Taraskin L.?D.?Radnaeva D.?Otgonsuren A.?G.?Pokrovskii G.?A.?Tolstikov 《Chemistry of Natural Compounds》2012,48(2):211-217
It was shown that plants of the genus Ferulopsis are valuable sources of coumarins. Nine angular 8-substituted and 8,9-disubstituted 8,9-dihydrofurocoumarins were isolated.
The cytotoxicity of these compounds was studied on models of human CEM-13, MT-4, and U-937 tumor cells. X-ray structure data
were obtained for peucenidin. 相似文献
8.
9.
10.
Bagryanskaya I. Yu. Gatilov Yu. V. Ganbaatar J. Osadchii S. A. Shakirov M. M. Shults E. E. Tolstikov G. A. 《Russian Chemical Bulletin》2001,50(11):2092-2094
Oximation of songorine afforded a mixture of its Z- and E-oximes. The crystal and molecular structure of the Z-isomer was established by X-ray diffraction analysis. Its structure was also confirmed by the spectral data (2D 1H—1H and 13C—1H NMR spectroscopy and mass spectrometry). The structure of isomeric E-oxime was established by comparing its NMR spectroscopic data (1H and 13C) with the data for the Z-isomer. 相似文献