全文获取类型
收费全文 | 506篇 |
免费 | 35篇 |
出版年
2019年 | 6篇 |
2018年 | 9篇 |
2017年 | 5篇 |
2016年 | 10篇 |
2015年 | 13篇 |
2014年 | 13篇 |
2013年 | 48篇 |
2012年 | 24篇 |
2011年 | 20篇 |
2010年 | 13篇 |
2009年 | 9篇 |
2008年 | 13篇 |
2007年 | 24篇 |
2006年 | 24篇 |
2005年 | 29篇 |
2004年 | 25篇 |
2003年 | 31篇 |
2002年 | 25篇 |
2001年 | 19篇 |
2000年 | 22篇 |
1999年 | 15篇 |
1998年 | 4篇 |
1997年 | 2篇 |
1996年 | 5篇 |
1995年 | 2篇 |
1994年 | 7篇 |
1992年 | 11篇 |
1991年 | 13篇 |
1990年 | 14篇 |
1989年 | 9篇 |
1988年 | 8篇 |
1987年 | 10篇 |
1986年 | 5篇 |
1985年 | 4篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1981年 | 8篇 |
1980年 | 4篇 |
1979年 | 4篇 |
1975年 | 2篇 |
1974年 | 3篇 |
1973年 | 3篇 |
1972年 | 3篇 |
1971年 | 2篇 |
1969年 | 3篇 |
1968年 | 2篇 |
1956年 | 1篇 |
1953年 | 1篇 |
1952年 | 1篇 |
排序方式: 共有541条查询结果,搜索用时 78 毫秒
1.
2.
3.
Arthur A. Vandenbark Paul Yoshihara Leslie Carveth Denis R. Burger 《Cellular immunology》1981,60(1):240-243
Keyhole limpet hemocyanin (KLH) preparations used for dermal testing in human volunteers may contain factors which elicit false positive reactions. These factors can be associated with the hemolymph collection procedure and possibly to a change in collection beds by the limpet supplier. Rapid collection of hemolymph from animals obtained from specified limpet beds resulted in KLH which produced negligible dermal reactivity in normal individuals. 相似文献
4.
5.
M Muraguchi Y Yoshihara T Tunemitu I Tani T Higuti 《Biochemical and biophysical research communications》1990,168(1):226-231
Previous studies suggested that the hydrophobic protein chargerin II, which is encoded in the A6L of mitochondrial DNA, may have a key role in the energy transduction by mitochondrial H(+)-ATP synthase because an antibody against chargerin II inhibited ATP synthesis and ATP-Pi exchange, in an energy-dependent fashion. In the present work, the contents of chargerin II in the H(+)-ATP synthase purified from rat liver mitochondria and in submitochondrial particles were determined by radioimmunoassay. Results showed that the H(+)-ATP synthase contained chargerin II in a molar ratio of one to one. This is the first report on the stoichiometry of the A6L-product in mitochondrial H(+)-ATP synthase. 相似文献
6.
7.
Hideyuki Matsuura Kumiko Ohashi Hiroshi Sasako Noriko Tagawa Yuuko Takano Yumiko Ioka Kensuke Nabeta Teruhiko Yoshihara 《Plant Growth Regulation》2008,54(1):31-36
Root exudate of Vigna unguiculata was extracted from a soil system consisting of charcoal and vermiculite. Germination stimulating activity for Striga gesnerioides was found in extracts of the soil system, and an active compound was isolated. The chemical structure of the active ingredient
was determined to be (+)-4-O-acetylorobanchol, based on analysis of the spectral data of 1-D and 2-D NMR together with nuclear Overhauser effect (NOE)
experiments. Application of the active compound to the seeds of S. gesnerioides at a concentration of 0.35 × 10−9 mol/disk led to 69% germination. The germination observed with application of GR-24, a positive control, at 0.57 × 10−10 mol/disk was 80%. 相似文献
8.
Chouemon Kanno Kunio Yamauchi Tomokichi Tsugo 《Bioscience, biotechnology, and biochemistry》2013,77(11):1652-1657
The lipid isolated from the fat globule membrane of milk was quickly autoxidized. The development of off-flavor like fishy flavor and brown color took place simultaneously. The browning material seemed to decompose fat peroxide. The addition of α-, γ- and δ-tocopherol into the membrane lipid inhibited the formation of fat peroxide and off-flavor and decreased the browning degree. The addition of the membrane lipid prolonged the induction period of the oxidation of the milk fat obtained by churning. The antioxidant activity of aα-, γ- and δ-tocopherols added into the churned milk fat containing 1% of the membrane lipid was higher than that of the tocopherols added into the churned milk fat containing no membrane lipid. 相似文献
9.
Yoshio Kawahara Tsuyoshi Ohsumi Yasuhiko Yoshihara Shigeho Ikeda 《Bioscience, biotechnology, and biochemistry》2013,77(9):2475-2479
Osmoregulation in Brevibacterium lactofermentum was studied. Proline was accumulated up to approximately 35mg/g dry cell weight in the cells of a wild strain of the bacterium grown under osmotic stress. The osmotic tolerance of a proline auxotroph mutant obtained from the bacterium was lower than that in the wild strain. The activity of pyrroline-5-carboxylate reductase, one of the enzymes in the proline biosynthetic pathway, increased about 3-fold when the cells of B. lactofermentum were grown under osmotic stress. These data indicated that proline is important in osmoregulation in the bacterium. 相似文献
10.
Chouemon Kanno Mineyuki Hayashi Kunio Yamauchi Tomokichi Tsugo 《Bioscience, biotechnology, and biochemistry》2013,77(6):878-890
Antioxidant activity of d-α-, dl-β-, d-γ- and d-δ-tocopherol was investigated with fatty acid methylester of milk fat from which unsaponifiable matter had been removed. Autoxidation was carried out at 50°C and its degree was indicated by peroxide value, α- or β-Tocopherol was more effective at lower concentrations (0.003 and 0.01%) than at higher concentrations (0.05, 0.1 and 0.5%). The antioxidant activity of γ- and δ-tocopherol was increased with the increase of tocopherol concentration within the range of 0.001 to 0.5%. The order of antioxidant activity of these tocopherols, which was compared in terms of the time to reach 30 meq of peroxide value, varied with the concentration; γ > β > δ > α at 0.001%, α > γ > β > δ at 0.003%, γ > δ > β > α at 0.01%, and δ > γ > β > α at the concentrations more than 0.05%. α-Tocopherol at the concentration of 0.003%, which corresponded to the concentration in original milk fat, was more effective than other tocopherols at the same concentration and α-tocopherol at other concentrations. Synergism due to the combination of β-, γ-, or δ-tocopherol with 0.003% of α-tocopherol was not observed. 相似文献