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H. Natsume H. Umezawa T. Suzuki F. Ichikawa T. Sato S. Baba H. Amano 《Journal of Radioanalytical and Nuclear Chemistry》1971,7(2):189-202
A scheme for the sequential separation of fission products has been developed on the basis of ion-exchange techniques. It
consists of a main cation-exchange process for group separation and subsidiary processes of cation or anion exchange for further
separations or purifications of the individual fission products. By the present method, Zn, Rb, Sr, Y, (Zr), Mo, Pd, Cd, Te,
Cs, Ba, La, Ce, Pr, Nd, Pm, Sm, Eu and Tb can be separated simultaneously from an irradiated uranium sample. Of these, alkali,
alkaline earth and rare earth metal ions are separated quantitatively. A polarographic method was applied to determine the
recoveries of Zn, Mo, Pd, Cd and Te, which were not separated quantitatively. 相似文献
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Raman spectra in the two-dimensionla diluted system K2CuxZn1-xF4 are reported. The problem how the cooperative Jahn-Teller distortion (whose existence in the c-plane is well confirmed for K2CuF4) is destroyed with decreasing x is discussed on the basis of observed behaviours of Strokes lines for some characteristic vibrational modes in spectra. 相似文献
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Kobayashi H Harada H Nakamura M Futamura Y Ito A Yoshida M Iemura SI Shin-Ya K Doi T Takahashi T Natsume T Imoto M Sakakibara Y 《BMC chemical biology》2012,12(1):2-9
ABSTRACT: BACKGROUND: Identification of the target proteins of bioactive compounds is critical for elucidating the mode of action; however, target identification has been difficult in general, mostly due to the low sensitivity of detection using affinity chromatography followed by CBB staining and MS/MS analysis. RESULTS: We applied our protocol of predicting target proteins combining in silico screening and experimental verification for incednine, which inhibits the anti-apoptotic function of Bcl-xL by an unknown mechanism. One hundred eighty-two target protein candidates were computationally predicted to bind to incednine by the statistical prediction method, and the predictions were verified by in vitro binding of incednine to seven proteins, whose expression can be confirmed in our cell system. As a result, 40% accuracy of the computational predictions was achieved successfully, and we newly found 3 incednine-binding proteins. CONCLUSIONS: This study revealed that our proposed protocol of predicting target protein combining in silico screening and experimental verification is useful, and provides new insight into a strategy for identifying target proteins of small molecules. 相似文献
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A generalization is given of the canonical map from a discrete group into K
1 of the group C
*-algebra. Our map also generalizes Rieffel's construction of a projection in an irrational rotation C
*-algebra. 相似文献
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A new phytotoxin, botrydienal, and its two related metabolites, dehydrobotrydienal and deacetyldihydrobotrydial, were isolated from , and their structures were elucidated as , and , respectively, on the basis of spectral analysis. 相似文献
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Mitsutaka Natsume Iwao Utsunomiya Keiichiro Yamaguchi Shin-Ichiro Sakai 《Tetrahedron》1985,41(11):2115-2123
Abstract1-A singlet oxygen adduct of l-benzyloxycarbonyl-l, 2-dihydro-5-(2-methyl-l,3-dioxolan-2-yl)pyridine 21 was treated with indole in the presence of stannous chloride to yield directly the complex compound 22, which will act as a suitable starting material for the synthesis of various kinds of indole alkaloids. Further transformation from 22, including a new device for construction of the aspidosperma framework, was investigated and pentacyclic compounds 25 (Y = H and OH) were synthesized in moderate yields. The structure of 25 (Y = H) = 38 was confirmed by correlation with l-acetyl-20-deethylaspidospennidine 44. Determination of the structure of a by-product 39 was carried out by single crystal X-ray analysis. 相似文献