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Your search keyword '"Wu, Yan"' showing total 18 results
Start Over Author "Wu, Yan" Publication Year Range More than 50 years ago
18 results on '"Wu, Yan"'

2. Zhongguo yao yong zhi wu zhi /

Author

Pei, Jian 裴鑑, Zhou, Taiyan 周太炎, Zhongguo ke xue yuan. Zhi wu yan jiu suo, Institute of Botany, Chinese Academy of Sciences, Pei, Jian 裴鑑, Zhou, Taiyan 周太炎, and Zhongguo ke xue yuan. Zhi wu yan jiu suo

Subjects
Botany, Botany, Medical, China, Materia medica
Published
1951

4. bei jing ye sheng shi yong zhi wu

Author

zhong guo ke xue yuan zhi wu yan jiu suo zhu bian, Internet Archive (archive.org), and zhong guo ke xue yuan zhi wu yan jiu suo zhu bian

Subjects
Botany
Published
1960

5. si chuan zhu yao shu zhong ming lu 四川主要树种名录

Author

lin ye bu lin ye ke xue yan jiu suo sen lin zhi wu yan jiu shi 林业部林业科学研究所森林植物研究室, Institute of Botany, Chinese Academy of Sciences, and lin ye bu lin ye ke xue yan jiu suo sen lin zhi wu yan jiu shi 林业部林业科学研究所森林植物研究室

Subjects
Trees
Published
1956

7. bi ma can wen ji

Author

zhong guo ke xue yuan shi yan sheng wu yan jiu suo bian, Institute of Botany, Chinese Academy of Sciences, and zhong guo ke xue yuan shi yan sheng wu yan jiu suo bian

Subjects
Botany
Published
1959

8. bi ma can wen ji

Author

zhong guo ke xue yuan shi yan sheng wu yan jiu suo bian, Institute of Botany, Chinese Academy of Sciences, and zhong guo ke xue yuan shi yan sheng wu yan jiu suo bian

Subjects
Botany
Published
1956

9. zhong guo zhi wu ke shu jian suo biao

Author

zhong guo zhi wu yan jiu suo bian, Institute of Botany, Chinese Academy of Sciences, and zhong guo zhi wu yan jiu suo bian

Subjects
Botany
Published
1953

10. zhong guo zhu yao zhi wu tu shuo dou ke

Author

zhong guo ke xue yuan zhi wu yan jiu suo, Institute of Botany, Chinese Academy of Sciences, and zhong guo ke xue yuan zhi wu yan jiu suo

Subjects
Botany
Published
1955

12. xiang gan di qu zhong sheng dai han mei di ceng hua shi shou ce

Author

mei tan bu xiang gan mei tian di zhi hui zhan zhi hui bu zhong guo ke xue yuan di zhi gu sheng wu yan jiu suo, Institute of Botany, Chinese Academy of Sciences, and mei tan bu xiang gan mei tian di zhi hui zhan zhi hui bu zhong guo ke xue yuan di zhi gu sheng wu yan jiu suo

Subjects
Botany
Published
1968

16. Studies on the mechanism of methemoglobin formation induced by aminoazo compounds

Author

Lin Jen-Kun and Wu Yan-Hwa

Subjects
Pharmacology, Erythrocytes, Time Factors, Strain (chemistry), Stereochemistry, Chemistry, In Vitro Techniques, Methemoglobinemia, medicine.disease, Biochemistry, Molecular biology, Methemoglobin, Rats, chemistry.chemical_compound, Aniline, In vivo, Reductive cleavage, Mole, medicine, Animals, Azo Compounds, Active metabolite
Abstract

Methemoglobinemia is induced by aminoazo dyes in rats of the Sprague-Dawley strain. 4-Anunoazobenzene (AB) induces about 66.6% of methemoglobin (MHb) by i.p. injection of a dose of 3.23 × 10 −4 moles/kg, while in the same dose, N -methyl- and N , N -dimethyl-4-aminoazobenzene cause 51.7 and 22.3% maximum levels of MHb respectively. The MHb-forming activity of the metabolites of AB in rats and in isolated rat erythrocytes has been investigated. N -OH-AB seems to be the most active metabolite of AB in causing methemoglobinemia in rats and in inducing MHb in isolated erythrocytes. The reductive cleavage products of AB (aniline, p -aminophenol and p -phenylenediamine) are not the main MHb formers in the early stage, but they may contribute partially to the MHb concentration in the later period of methemoglobinemia induced by AB in vivo . The ring-hydroxylated metabolites of AB, such as 4′-OH-AB and 3-OH-AB, also have MHb-forming activity, but are not so active as N -OH-AB. N -benzoyloxy- N -methyl-4-aminoazobenzene and N , N -dimethyl-4-aminoazobenzene- N -oxide are quite active in inducing MHb in the isolated rat erythrocytes.

Published
1973

18. THE INFLUENCE OF RARE-EARTH IONS ON THE FERROMAGNETIC RESONANCE AT HIGH POWER LEVELS

Author

Cheng Chin-Chi and Lai Wu-Yan

Subjects
Materials science, Correlation function, Ferromagnetism, Condensed matter physics, Field (physics), Spin wave, General Physics and Astronomy, Semiclassical physics, Atomic physics, Anisotropy, Ferromagnetic resonance, Ion
Abstract

The method of correlation function has been utilized to discuss the nonlinear effects in the ferromagnetic resonance at high power levels. For ordinary ferromagnetic crystals, the present theory includes the results of the semiclassical theory developed by H. Suhl as a classical limit. In the case of YIG doped with rare-earth ions, the frequency shift and the additional losses due to the rare-earth ions have been discussed. Besides, the threshold field of the so-called first order process with parallel pumping and the first and second order processes with perpendicular pumping have also been derived. The results obtained show that the rf critical magnetic field increases with the addition of rare-earth ions. In samples with small concentration of rare-earth ions, the influence on the threshold is attributed to the increase of the losses of spin waves. The temperature dependence and the anisotropy of the threshold field are entirely similar to those of the ferromagnetic resonance linewidth at low power level. The experimental results may be satisfactorily explained by the present theory.

Published
1965

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