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G. Klein Gertrud Pollauf Marie Krisch Elisabeth Farkass F. Schusta Anneliese Niethammer G. D. Lander C. K. Glycart M. Wagenaar F. Pavelka L. van Itallie A. J. Steenhauer A. L. W. E. van der Veen G. Denigès L. Rosenthaler D. Krüger E. Tschirch H. Tangl R. Fischer F. Stauder F. Dangl L. Kofler H. Hilbck C. Griebel F. Weiß A. Hinrichs L. Klemm O. Mohr H. Alber M. Gläser Th. Morawski und J. A. Rose 《Fresenius' Journal of Analytical Chemistry》1933,91(1-2):48-68
Ohne Zusammenfassung 相似文献
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G. Klein Gertrud Pollauf Marie Krisch Elisabeth Farkass F. Schusta Anneliese Niethammer G. D. Lander C. K. Glycart M. Wagenaar F. Pavelka L. van Itallie A. J. Steenhauer A. L. W. E. van der Veen G. Denigès L. Rosenthaler D. Krüger E. Tschirch H. Tangl R. Fischer F. Stauder F. Dangl L. Kofler H. Hilbck C. Griebel F. Weiß A. Hinrichs L. Klemm O. Mohr H. Alber M. Gläser Th. Morawski J. A. Rose 《Analytical and bioanalytical chemistry》1933,91(1-2):48-68
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Stanislav Pavelka 《Journal of Radioanalytical and Nuclear Chemistry》2010,286(3):861-865
We elaborated novel, reliable radiometric methods for extremely sensitive determination of enzyme activities of iodothyronine
deiodinases (IDs) of types 1, 2 and 3 in microsomal fractions of different rat and human tissues, as well as in homogenates
of cultured mammalian cells. These radiometric enzyme assays were based on the use of high-specific-radioactivity 125I-labeled iodothyronines as substrates; TLC separation of radioactive products from the unconsumed substrates; film-less autoradiography
of radiochromatograms using storage phosphor screens; and quantification of the separated compounds with a BAS-5000 laser
scanner. This methodology enabled us to determine IDs enzyme activities as low as 10−18 katals. The applicability of our sophisticated methods was demonstrated by following the alterations of IDs activities induced
in cultured astroglial cells by a series of purinergic agonists, retinoic acid, and their combination. In addition, in case
of ATP as a representative of purinergic agonists, we determined time-course and dose–response curves to characterize in more
details the induction of each type of deiodinase by purines. 相似文献
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This work presents a systematic theoretical study on Cu(I) and Cu(II) cations in variable hydrogen sulfide-aqua-ammine ligand fields. These ligands model the biologically most common environment for Cu ions. Molecular structures of the complexes were optimized at the density functional theory (DFT) level. Subsequent thorough energy analyses revealed the following trends: (i) The ammine complexes are the most stable, followed by those containing the aqua and hydrogen sulfide ligands, which are characterized by similar stabilization energies. (ii) The most preferred Cu(I) coordination number is 2 in ammine or aqua ligand fields. A qualitatively different binding picture was obtained for complexes with H(2)S ligands where the 4-coordination is favored. (iii) The 4- and 5-coordinated structures belong to the most stable complexes for Cu(II), regardless of the ligand types. Vertical and adiabatic ionization potentials of Cu(I) complexes were calculated. Charge distribution (using the natural population analysis (NPA) method) and molecular orbital analyses were performed to elucidate the nature of bonding in the examined systems. The results provide in-depth insight into the Cu-binding properties and can be, among others, used for the calibration of bioinorganic force fields. 相似文献
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Alberto ME Lucas MF Pavelka M Russo N 《The journal of physical chemistry. B》2008,112(35):10765-10768
We have investigated the degradation reactions, in chloride medium, of the third generation drug oxaliplatin using density functional theory. Our calculations confirm that this drug should be administered in chloride free solutions, and we have ascertained the main biodegradation products upon chloride binding, which are essential to establish the active compounds reacting with DNA. In addition, detailed knowledge of these platinum complexes is fundamental for correct elimination procedures in wastewater treatments. 相似文献
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A new polymer with an alternating germanium-carbon backbone has been synthesized from 1,1-dimesitylneopentylgermene via addition polymerization using an anionic initiator. 相似文献