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11.
V. A. Postnikov Ts. V. Kakuliya L. M. Khananashvili Yu. V. Isaev Yu. N. Novikov M. E. Vol'pin 《Russian Chemical Bulletin》1979,28(3):626-627
Conclusions The stirred reaction of graphite with molten lithium gave compounds of composition C6Li, C12Li, and C18Li, for which the identity periods and thicknesses of the filled layers were determined.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 671–672, March, 1979. 相似文献
12.
Another two methylsteroids of the cycloartane series have been isolated from the epigeal part ofAstragalus alopecurus. The structures of the compounds isolated, cycloalpigenin and cycloalpioside, have been established as (20R,24R)-16,24:20, 24-diepoxycycloartane-3,7,25-triol and (20R,24R)-16, 24:20,24-diepoxycycloartane-3,7, 25-triol 3-O--D-xylopyranoside, respectively, on the basis of chemical transformations and spectral characteristics. The structure of cycloalpigenin has been confirmed by chemical correlation with that of cycloalpigenin D.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (3712) 89 14 75. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 700–708, September–October, 1995. Original article submitted February 1, 1995. 相似文献
13.
T. V. Ganenko M. I. Isaev T. T. Gorovits A. S. Gromova V. I. Lutskii A. A. Semenov N. K. Abubakirov 《Chemistry of Natural Compounds》1984,20(4):433-438
A new glycoside — foetoside C — has been isolated from the epigeal part ofThalictrum foetidum L. and, on the basis of chemical transformations and spectral characteristics its structure has been established as oleanolic acid 28-[O-α-D-glycopyranosyl-(1 → 6)-O-β-D-glucopyranoside] 3-O-[O-β-D-xylopyranosyl-(1 → 3)-O-α-L-rhamnopyranosyl-(1 → 2)-α-L-arabinopyranoside]. 相似文献
14.
The new triterpenoid cycloartane cycloorbigenin C, the structure of which is 23ξ,24ξ-cycloartan-3β,6α,16β,23,24,25-hexaol, was obtained from the aerial part of Astragalus orbiculatus Ledeb. (Leguminosae). The structure of cycloorbigenin C was proved using chemical transformations, IR spectroscopy, electron-impact mass spectrometry, and PMR and 13C NMR spectra interpreted using J-modulation and the 2D NMR spectroscopies: 1H-1H COSY, TOCSY, ROESY, HSQC, and HMBC. 相似文献
15.
16.
M. A. Agzamova M. I. Isaev M. B. Gorovits N. K. Abubakirov 《Chemistry of Natural Compounds》1988,23(6):696-700
A bisdesmosidic glycoside — cycloorbicoside G — has been isolated from the epigeal parts of the plantAstragalus orbiculatus Ledeb. (Leguminosae), and on the basis of chemical transformations and spectral characteristics its structure has been established as (23R,24S)-16,23;16,24-diepoxycycloartane-3,7,25-triol 25-O--D-glucopyranoside 3-O--D-xylopyranoside.Institute of the Chemistry of Plant Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 837–842, November–December, 1987. 相似文献
17.
The stems ofAstragalus pycnanthus Boriss. (Leguminosae) contain a number of low-molecular-mass substances, of which -sitosterol, cyclosieversioside F, and D-3-O-methyl-chiro-inositol have been identified, and also a new cycloartane diglycoside — 24R-cycloartane-3, 6, 16, 24,25-pentaol 16-O--D-glucopyranoside 3-O--D-xylopyranoside.Throughout this paper the given Russian name of the compound concerned would correspond to an English pycanthoside. Pycnanthoside agreees better with the name of the source plant — Translator.The materials of this paper were presented at the Second International Symposium on the Chemistry of Natural Compounds (SCNC, Eskiehir, Turkey, October 22–24, 1996).Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (3712) 40 64 75. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 194–200, March–April, 1998. 相似文献
18.
M. I. Isaev 《Chemistry of Natural Compounds》1992,27(4):457-459
The structure of a triterpene glycoside of the cycloartane series — cycloaraloside D, isolated from the roots ofAstragalus amarus Pall. (Leguminosae) — has been established on the basis of chemical transformations and spectral characteristics. Cycloaraloside D is 20R, 24S-epoxycycloartane-3, 6, 16, 25-tetraol 3-0-[0--L-rhamnopyranosyl-(1 2)--D-glucopyranoside].Institute of Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 526–528, July–August, 1991. 相似文献
19.
I. A. Sukhina R. P. Mamedova M. A. Agzamova M. I. Isaev 《Chemistry of Natural Compounds》2007,43(2):159-161
The two trisdesmoside cycloartane glycosides astragaloside VII and cyclotrisectoside were isolated from Astragalus dissectus (Leguminosae) and identified. The latter was 20R,25-epoxy-24S-cycloartan-3β,6α,16β,24-tetraol 3-O-β-D-xylopyranoside-6,24-di-O-β-D-glucopyranoside and was a new natural compound.
Presented at the Sixth International Symposium on the Chemistry of Natural Compounds (SCNC, Turkey, Ankara, 28–29 June 2005).
__________
Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 132–134, March–April, 2007. 相似文献
20.
M. I. Isaev 《Chemistry of Natural Compounds》1994,29(6):740-743
A method has been developed for the regioselective glycosylation of 20,24-epoxycycloartane-16,25-diols. Two glycosides have been synthesized from askendoside D: askendoside D 16-O-acetate 25-O--L-rhamnopyranoside (V) and askendoside B 16,25-di-O--L-rhamnopyranoside (VI).Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 830–835, November–December, 1993. 相似文献