全文获取类型
收费全文 | 573篇 |
免费 | 31篇 |
专业分类
林业 | 71篇 |
农学 | 10篇 |
基础科学 | 2篇 |
58篇 | |
综合类 | 31篇 |
农作物 | 12篇 |
水产渔业 | 43篇 |
畜牧兽医 | 309篇 |
园艺 | 10篇 |
植物保护 | 58篇 |
出版年
2022年 | 4篇 |
2021年 | 14篇 |
2020年 | 8篇 |
2019年 | 13篇 |
2018年 | 15篇 |
2017年 | 17篇 |
2016年 | 15篇 |
2015年 | 14篇 |
2014年 | 16篇 |
2013年 | 35篇 |
2012年 | 24篇 |
2011年 | 28篇 |
2010年 | 16篇 |
2009年 | 20篇 |
2008年 | 31篇 |
2007年 | 35篇 |
2006年 | 39篇 |
2005年 | 38篇 |
2004年 | 24篇 |
2003年 | 20篇 |
2002年 | 19篇 |
2001年 | 24篇 |
2000年 | 26篇 |
1999年 | 15篇 |
1998年 | 6篇 |
1996年 | 5篇 |
1993年 | 2篇 |
1992年 | 9篇 |
1991年 | 8篇 |
1990年 | 6篇 |
1989年 | 5篇 |
1988年 | 10篇 |
1987年 | 7篇 |
1986年 | 7篇 |
1985年 | 5篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1975年 | 2篇 |
1974年 | 1篇 |
1973年 | 1篇 |
1972年 | 1篇 |
1970年 | 1篇 |
1969年 | 1篇 |
1967年 | 2篇 |
1966年 | 2篇 |
1963年 | 1篇 |
排序方式: 共有604条查询结果,搜索用时 31 毫秒
11.
Itaru Shioya Koji Inoue Akihisa Abe Akira Takeshita Takahiro Yamaguchi 《Fisheries Science》2011,77(5):883-889
The meat quality of farmed yellowtail Seriola quinqueradiata fed on extruded pellets (EP) containing 0.5% (v/v) red pepper (experimental group) was compared with yellowtail of the same
age fed on EP (control group). In 1-year-old yellowtail, the crude lipid content of the dorsal muscle of the experimental
group tended to be lower than that of the control group. In contrast, there was no difference in the lipid content of the
dorsal muscle between the control group and the experimental group in 2-year-old yellowtail. The muscle texture of the experimental
group was significantly firmer than that of the control group, with the effect of red pepper unrelated to fish age and lipid
content. Color change of red muscle of the experimental group was significantly lower than that of the control group, and
the content of thiobarbituric acid-reactive substances in the red muscle was significantly lower in the experimental group
than in the control group. These results are the first to demonstrate that the inclusion of red pepper in the diet is able
to reduce the loss of muscle texture firmness and to slow down color change in red muscle of yellowtail. 相似文献
12.
Ahimbisibwe John Bosco Inoue Kousuke Shibata Toshiyuki Aoki Takahiko 《Fisheries Science》2010,76(2):389-394
The effect of bleeding on white muscle quality in amberjack and red sea bream was evaluated by measuring ATP-related compounds,
volatile basic nitrogen (VBN), and the trimethylamine (TMA) content. The freshness was evaluated by the K value, and the degree of spoilage was elucidated by VBN and TMA. ATP was rapidly converted to ADP and AMP in the muscle and
IMP was the main product of ATP degradation during iced storage. For both species, the IMP content was higher in the muscles
of fish that were bled than in those unbled during iced storage. Conversely, the K value and the levels of hypoxanthine (Hx) and VBN were higher in the muscle tissue of unbled fish than in the bled tissue
of both species. Similarly, the TMA content was higher in the unbled muscle tissues of both species after a week of storage. 相似文献
13.
14.
15.
16.
The complete nucleotide sequences of L3 and S7 segments of Ibaraki virus encoding for the major inner capsid proteins, VP3 and VP7 总被引:2,自引:0,他引:2
Iwata H Manabe S Yoshida A Pereira EM Inoue T 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2001,63(1):73-78
The complete nucleotide sequences of the genes encoding two of the major inner capsid proteins of Ibaraki virus (IBAV), belonging to epizootic hemorrhagic disease virus serotype 2 (EHDV-2) were determined. The L3 RNA segment is 2768 nucleotides in length which encodes VP3 polypeptides of 899 amino acid residues (M.W. 103 kDa). The S7 RNA segment, which encodes the VP7 core protein, is 1162 nucleotides in length and encodes 349 amino acids (M.W. 38 kDa). These RNA segments had the characteristic consensus motifs of Orbivirus RNA segments in termini, namely 5'-GUUAAA... and ...ACUUAC-3'. The comparison of the IBAV L3 and S7 sequences with those of other two EHDV-2 isolates revealed the higher homologies of 93% and 92% against EHDV-2 Australia isolate (EHDV-2AUS) and lower homologies of 80% and 81% against EHDV-2 North America isolate, respectively. The phylogenetic analysis based on L3 and S7 genes also indicated close relationships between IBAV and EHDV-2AUS. KEY WORDS: dsRNA gene, lbaraki virus, inner capsid, VP3, VP7. 相似文献
17.
18.
A Nakagawa T Suzuki T Suga T Inoue Y Takahashi H Kanagawa 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》1991,53(2):287-290
A total of 691 normal embryos were recovered from 183 superovulated donor cows on the 5th and 6th days after the first insemination, and were examined for their morphology and size in relation to their developmental stage. There was no significant difference in the thickness of the zona pellucida, the diameter of the cell mass, and the overall diameter of the embryos among zygotes, 2-, 4-, 8- and 16-cell embryos, and morulae. In the blastocyst stage, however, the diameter of the cell mass and the overall embryo diameter were significantly greater and the zona pellucida was significantly thinner than in the earlier-stage embryos. The volume of the blastomere significantly decreased from zygote to morula in proportion to the increase in the number of blastomeres. The volume of the cell mass of 2-cell embryos was decreased by about 30% compared with that of zygotes and no increase in the volume of the cell mass was observed during the progression from 2-cell stage to morula. The diameter of the cell mass and the overall diameter of morulae recovered on the 6th day after the first insemination were significantly greater than those of morulae recovered on the 5th day. 相似文献
19.
20.