全文获取类型
收费全文 | 827篇 |
免费 | 89篇 |
专业分类
林业 | 12篇 |
农学 | 12篇 |
56篇 | |
综合类 | 15篇 |
农作物 | 17篇 |
水产渔业 | 20篇 |
畜牧兽医 | 749篇 |
园艺 | 10篇 |
植物保护 | 25篇 |
出版年
2024年 | 1篇 |
2023年 | 22篇 |
2022年 | 3篇 |
2021年 | 8篇 |
2020年 | 45篇 |
2019年 | 10篇 |
2018年 | 29篇 |
2017年 | 33篇 |
2016年 | 23篇 |
2015年 | 30篇 |
2014年 | 41篇 |
2013年 | 36篇 |
2012年 | 41篇 |
2011年 | 30篇 |
2010年 | 34篇 |
2009年 | 45篇 |
2008年 | 38篇 |
2007年 | 24篇 |
2006年 | 24篇 |
2005年 | 20篇 |
2004年 | 26篇 |
2003年 | 19篇 |
2002年 | 21篇 |
2001年 | 10篇 |
2000年 | 10篇 |
1999年 | 19篇 |
1998年 | 18篇 |
1997年 | 22篇 |
1996年 | 19篇 |
1995年 | 20篇 |
1994年 | 8篇 |
1993年 | 19篇 |
1992年 | 20篇 |
1991年 | 15篇 |
1990年 | 27篇 |
1989年 | 18篇 |
1988年 | 16篇 |
1987年 | 22篇 |
1986年 | 7篇 |
1985年 | 14篇 |
1984年 | 14篇 |
1983年 | 9篇 |
1982年 | 3篇 |
1980年 | 1篇 |
1978年 | 1篇 |
1977年 | 1篇 |
排序方式: 共有916条查询结果,搜索用时 15 毫秒
41.
Valentina De Monte Francesco Staffieri Domenico Caivano Antonello Bufalari 《Acta veterinaria Scandinavica》2015,57(1)
A three-month-old female Rottweiler puppy was referred for intravascular correction of a previously identified cor triatriatum dexter. Echocardiography confirmed the presence of a hyperechoic membrane that divided the right atrium into a cranial and caudal chamber. A foramen in this membrane allowed the blood to flow from the caudal to the cranial chamber. Balloon dilation of the defect under transthoracic echocardiographic guidance was scheduled for the following day. The dog was premedicated with 0.5 μg/kg sufentanil and 0.2 mg/kg midazolam administered intravenously. General anaesthesia was induced with 2 mg/kg propofol and maintained with inhaled isoflurane in oxygen; at the same time, a constant rate infusion of 0.5 μg/kg/h sufentanil was administered by means of an infusion pump. Uneventful ventricular and supraventricular tachyarrhythmias developed during the placement of catheters and balloon dilation. At the end of procedure, when the guide wire and balloon catheter were removed, normal sinus rhythm was observed. To the authors’ knowledge, no previous reports have described the anaesthetic management of a balloon dilation procedure for cor triatriatum dexter in dogs. 相似文献
42.
43.
44.
Comparison of Outcome After Use of Extra‐Luminal Rings and Intra‐Luminal Stents for Treatment of Tracheal Collapse in Dogs
下载免费PDF全文
![点击此处可从《Veterinary surgery : VS》网站下载免费的PDF全文](/ch/ext_images/free.gif)
45.
46.
47.
Patrizia CASAGRANDE PROIETTI Valentina STEFANETTI Doreene Rose HYATT Maria Luisa MARENZONI Stefano CAPOMACCIO Mauro COLETTI Annalisa BIETTA Maria Pia FRANCIOSINI Fabrizio PASSAMONTI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2015,77(8):945-951
Biofilm-forming ability is increasingly being recognized as an important virulence factor in several Staphylococcus species. This study evaluated the biofilm-forming ability of sixty canine derived clinical isolates of S. pseudintermedius, using three phenotypic methods, microtiter plate test (MtP), Congo red agar method (CRA) and tube adherence test, and the presence and impact of biofilm-associated genes (icaA and icaD). The results showed that icaA and icaD genes were detected concomitantly in 55 (91.7%) of 60 isolates. A majority (88.3%) of the strains screened had matching results by the tube adherence test, MtP and PCR analysis. Better agreement (95%) was found between the PCR-based analysis and the CRA. Results of the icaA and icaD gene PCRs showed good agreement with CRA results, with a kappa of 0.7. Comparing the phenotypic methods,
the statistical analysis showed that the agreement among the phenotypical tests using categorical data was generally good. Considering two classes (biofilm producer and biofilm non-producer), the percentage of matching results between the CRA method and the tube adherence test and between the CRA method and the MtP was 93.3%. A concordance of 100% was revealed between the MtP and the tube adherence test. The results indicate a high prevalence of the ica genes within S. pseudintermedius isolates, and their presence is associated with in vitro formation of a biofilm. A combination of phenotypic and genotypic tests is recommended for investigating biofilm formation in S. pseudintermedius. 相似文献
48.
Effect of sorbitol,single, and multidose activated charcoal administration on carprofen absorption following experimental overdose in dogs
下载免费PDF全文
![点击此处可从《Journal of Veterinary Emergency and Critical Care》网站下载免费的PDF全文](/ch/ext_images/free.gif)
49.
The activity and inhibition of poly(ADP‐ribose) polymerase‐1 in equine peripheral blood mononuclear cells in vitro
下载免费PDF全文
![点击此处可从《Journal of Veterinary Emergency and Critical Care》网站下载免费的PDF全文](/ch/ext_images/free.gif)
50.
Hossain Mohammad M. Scott Ian M. McGarvey Brian D. Conn Kenneth Ferrante Lorenzo Berruti Franco Briens Cedric 《Journal of pest science》2015,88(1):171-179
Journal of Pest Science - Conflicting views regarding synthetic pesticides include the successful use as pest management tools for agriculture and forestry on one hand and the threats to components... 相似文献