全文获取类型
收费全文 | 378篇 |
免费 | 11篇 |
国内免费 | 3篇 |
专业分类
林业 | 28篇 |
农学 | 12篇 |
82篇 | |
综合类 | 8篇 |
农作物 | 6篇 |
水产渔业 | 45篇 |
畜牧兽医 | 196篇 |
植物保护 | 15篇 |
出版年
2022年 | 5篇 |
2021年 | 27篇 |
2020年 | 7篇 |
2019年 | 3篇 |
2018年 | 6篇 |
2017年 | 7篇 |
2016年 | 5篇 |
2015年 | 18篇 |
2014年 | 20篇 |
2013年 | 61篇 |
2012年 | 24篇 |
2011年 | 23篇 |
2010年 | 11篇 |
2009年 | 6篇 |
2008年 | 24篇 |
2007年 | 12篇 |
2006年 | 17篇 |
2005年 | 19篇 |
2004年 | 23篇 |
2003年 | 12篇 |
2002年 | 13篇 |
2001年 | 8篇 |
2000年 | 10篇 |
1999年 | 4篇 |
1998年 | 3篇 |
1997年 | 3篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1992年 | 6篇 |
1991年 | 2篇 |
1983年 | 1篇 |
1979年 | 1篇 |
1975年 | 4篇 |
1974年 | 1篇 |
1971年 | 1篇 |
1957年 | 1篇 |
1956年 | 1篇 |
1953年 | 1篇 |
排序方式: 共有392条查询结果,搜索用时 15 毫秒
331.
332.
Dede Hermawan Toshimitsu Hata Shuichi Kawai Wakatsu Nagadomi Yasuo Kuroki 《Journal of Wood Science》2002,48(1):20-24
This study dealt with the effects of a curing method that uses gaseous and supercritical CO2. Its effects on the properties of oil palm fronds cement-bonded board manufactured by the conventional cold-press setting method were recorded. The effect of MgCl2 as an accelerator of cement setting was also investigated. The hydration of cement was examined using X-ray diffractometry, thermal gravimetry, and scanning electron microscopy. The results are as follows. (1) High-performance cement-bonded boards made from oil palm fronds were successfully manufactured using the CO2 curing method. (2) The curing method using either gaseous or supercritical CO2 resulted in accelerated curing of cement (within several minutes). Accelerated formation of the hydration products (e.g., calcium carbonate and calcium silicate) is the main reason for the high strength of CO2-cured boards. (3) The CO2 curing technology does not require setting accelerators, which cause a decrease in the dimensional stability of cement-bonded board. 相似文献
333.
Terakawa J Wakitani S Sugiyama M Inoue N Ohmori Y Kiso Y Hosaka YZ Hondo E 《The Journal of reproduction and development》2011,57(6):700-707
Leukemia inhibitory factor (LIF) is essential for embryo implantation in mice and plays an important role in other mammals including humans. Intraperitoneal (i.p.) injections with anti-LIF antibody (7.5 μg/g body weight, 3 times) between D3 (D1 = day of vaginal plug detection) and D4 effectively blocked embryo implantation; complete inhibition was achieved in C57BL/6J mice, and implantation was dramatically reduced in ICR mice (reduced to 27%). Normal rabbit IgG used as the control did not disturb embryo implantation. Anti-LIF antibody was localized not only in the stroma, but also in the luminal epithelium and the glandular lumen after i.p. injections. Growth-arrested blastocysts were recovered from the uterus without any implantation sites in both strains. Blastocysts made contact with the LE on the antimesometrial side; however, uterine stromal cells did not undergo secondary decidual reaction, and the uterine lumen was open, even at D7. Several regions of decidualization in ICR mice treated with anti-LIF antibody were smaller than those of the control, and development of blastocysts was delayed. The expression of LIF-regulated genes, such as immune-responsive gene-1 and insulin-like growth factor binding protein-3, was significantly decreased in C57BL/6J mice treated with anti-LIF antibody compared with the control, but not in ICR mice. The present study demonstrated that simple ip injections of an antibody are sufficient to block one of the important factors involved in embryo implantation in mice, and this method should also be easily applicable to the investigation of other factors involved in implantation. 相似文献
334.
Hiyama M Kusakabe KT Kuwahara A Wakitani S Khan H Kiso Y 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2011,73(10):1337-1340
To determine whether functional T- and B-cells can affect differentiation and/or proliferation of uterine natural killer (uNK) cells, their numbers in SCID mice (genotype, C.B.-17/Icr-scid/scid) were compared with those of control mice (genotype, C.B.-17/Icr-+/+) on days 8, 12 and 16 of pregnancy. Using biotinylated-Dolichos biflorus agglutinin (DBA) lectin staining, uNK cells can be readily classified into 4 subtypes, I to IV, from immature to mature types. The number of uNK cells was significantly lower in the decidua basalis of SCID mice than in that of control mice on day 8 of pregnancy. Particularly, the number of uNK cells of immature subtype II was significantly lower in SCID mice than in the control mice. By day 12, however, the uNK cell number in the SCID mice reached the same level as that of the control mice. It is likely that uNK cell differentiation in SCID mice was delayed during the early placentation period due to a lack of functional T and B cells. 相似文献
335.
Matsushita Yosuke Yanagisawa Hironobu Khiutti Aleksandr Mironenko Nina Ohto Yasuo Afanasenko Olga 《European journal of plant pathology / European Foundation for Plant Pathology》2021,161(3):529-542
European Journal of Plant Pathology - To investigate the current status of viroid infection in potato fields in Russia, potato spindle tuber viroid (PSTVd) and chrysanthemum stunt viroid (CSVd)... 相似文献
336.
Asanoma M Tachibana N Hirotsuka M Kohno M Watanabe Y 《Journal of agricultural and food chemistry》2012,60(21):5367-5372
This study assessed the effects of soy protein isolate (SPI) on severe kidney damage in deoxycorticosterone acetate (DOCA) salt-treated obese Zucker rats. These rats underwent heminephrectomy and were fed either casein or SPI diet for 12 weeks. From weeks 8 to 10 of the experiment, kidney damage was induced by biweekly injection of 25 mg/kg DOCA and administration of 0.5% NaCl (w/v) ad libitum. Urinary protein and N-acetyl-β-d-glucosaminidase excretions of SPI rats were much lower than those of casein rats at weeks 1 (p < 0.01) and 2 (p < 0.05) after DOCA treatment. Abnormal mineral excretions induced by DOCA treatment in casein rats were hardly detected in SPI rats. Severe atrophy of tubular epithelium and some flattened/detached renal tubules were also observed in casein rats, but not in SPI rats. These results indicate that consecutive treatment of SPI protects against renal dysfunction, particularly tubulointerstitial nephritis, in DOCA salt-treated obese Zucker rats. 相似文献
337.
Kiyoshi NAKAMURA Kensuke ARAKAWA Yasushi KAWAI Narimi YASUTA Takahiro CHUJO Masamichi WATANABE Hiroyuki IIOKA Masashi TANIOKA Junko NISHIMURA Haruki KITAZAWA Koichi TSURUMI Tadao SAITO 《Animal Science Journal》2013,84(2):144-149
Gassericin A (GA) is a circular bacteriocin produced by Lactobacillus gasseri LA39. In this study, GA‐containing concentrate was prepared using a cross‐flow membrane filtration device (30 kDa cut‐off) from the culture supernatant of Lb. gasseri LA39 cultivated in a cheese whey‐based food‐grade medium. The bacteriocin activity titer in the concentrate was 16 times as high as that of the culture supernatant and was completely maintained through each incubation at 4°C for 3 months, 37°C for 2 months, 60°C for 5 h, and 100°C for 30 min. The GA‐containing concentrate was used with glycine powder to make custard creams, and then four representative strains of custard cream spoilage bacteria (Bacillus cereus, Lactococcus lactis subsp. lactis, Achromobacter denitrificans and Pseudomonas fluorescens) were individually inoculated at c. 103 colony forming units/g in the custard creams. Throughout 30 days of incubation at 30°C, all of the inoculated bacteria were completely inhibited by the combination of 5% (w/w) of the GA‐containing concentrate and 0.5% (w/w) glycine. This is the first highly practical application of GA to foods as a biopreservative, and the concentration method and the bacteriocin concentrate would contribute to biopreservation of several foods. 相似文献
338.
339.
340.