全文获取类型
收费全文 | 6870篇 |
免费 | 531篇 |
国内免费 | 14篇 |
专业分类
林业 | 501篇 |
农学 | 293篇 |
基础科学 | 35篇 |
1563篇 | |
综合类 | 340篇 |
农作物 | 479篇 |
水产渔业 | 828篇 |
畜牧兽医 | 2644篇 |
园艺 | 154篇 |
植物保护 | 578篇 |
出版年
2024年 | 6篇 |
2023年 | 69篇 |
2022年 | 143篇 |
2021年 | 302篇 |
2020年 | 321篇 |
2019年 | 391篇 |
2018年 | 345篇 |
2017年 | 353篇 |
2016年 | 318篇 |
2015年 | 241篇 |
2014年 | 334篇 |
2013年 | 459篇 |
2012年 | 533篇 |
2011年 | 542篇 |
2010年 | 309篇 |
2009年 | 279篇 |
2008年 | 407篇 |
2007年 | 406篇 |
2006年 | 282篇 |
2005年 | 230篇 |
2004年 | 195篇 |
2003年 | 207篇 |
2002年 | 210篇 |
2001年 | 81篇 |
2000年 | 73篇 |
1999年 | 46篇 |
1998年 | 31篇 |
1997年 | 21篇 |
1996年 | 26篇 |
1995年 | 21篇 |
1994年 | 19篇 |
1993年 | 12篇 |
1992年 | 15篇 |
1991年 | 10篇 |
1990年 | 15篇 |
1989年 | 21篇 |
1988年 | 14篇 |
1987年 | 10篇 |
1986年 | 11篇 |
1985年 | 9篇 |
1984年 | 15篇 |
1983年 | 11篇 |
1982年 | 5篇 |
1981年 | 6篇 |
1980年 | 9篇 |
1979年 | 7篇 |
1977年 | 5篇 |
1973年 | 6篇 |
1969年 | 6篇 |
1966年 | 5篇 |
排序方式: 共有7415条查询结果,搜索用时 31 毫秒
71.
Plasma biomarkers profile of female dogs with mammary carcinoma and its association with clinical and pathological features
下载免费PDF全文
![点击此处可从《Veterinary and comparative oncology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
R. P. Soares L. G. R. Ribeiro K. A. Damasceno A. T. Costa A. Teixeira‐Carvalho O. A. Martins‐Filho G. D. Cassali 《Veterinary and comparative oncology》2016,14(1):88-100
The immunological biomarkers profiles were evaluated using Luminex as putative measures to monitor canine mammary carcinomas (MCs). Forty female dogs were categorized into benign mixed tumour (MC‐BMT = 28) and mammary carcinoma (MC=12). The ascendant biomarker signatures were used to compare the groups. For example, a higher frequency of MC‐BMT animals producing IL‐6, CXCL‐8 and CXCL‐10 was observed, whereas for the MC group IL‐2 and CXCL‐8 were detected. MC‐BMT animals without metastasis had an increase in the levels of IL‐2, CXCL‐8, CXCL‐10, IL‐6, TNF‐α, IL‐15 and a decrease in IL‐10 and CXCL‐8. MC‐BMT animals with metastasis showed only an increase in CXCL‐10 and a decrease in IL‐18. After comparing the ascendant signatures following the presence of metastasis in both groups, a higher frequency of dogs exhibiting IL‐10 production was observed. Pearson correlation (P = 0.0273) and receiver operating characteristic (ROC) curve analysis revealed that this pattern was associated with worse outcome and lower survival rates in MC animals. 相似文献
72.
73.
Igal H. Horowitz Richard R. Dubielzig Ana‐Maria Botero‐Anug Araceli Lucio‐Forster Dwight D. Bowman Ariella B. Rosenzweig Shahar Frenkel Ron Ofri 《Veterinary ophthalmology》2016,19(2):161-166
A captive female square‐lipped rhinoceros born in 1993 had been showing intermittent signs of bilateral conjunctivitis and conjunctival proliferation since 1998. Periodic improvement was noted, especially in winter, but overall the condition had deteriorated over the years. Treatment with various topical, intralesional, and systemic antibiotics and glucocorticosteroids was largely ineffective, as were repeated dewormings. No primary cause for these lesions was found in biopsies taken in 2000 and 2006, although a severe infiltrate of numerous eosinophils was observed in the latter. As the condition worsened, secondary corneal changes were noted, and eventually vision was lost due to proliferative conjunctival tissue. Aggressive resection of the proliferating tissue in 2013 restored vision and submitted biopsies yielded a diagnosis of severe allergic conjunctivitis, eosinophilic granuloma, and habronematid (Habronema or Draschia) larval infection. As no other rhinoceros in the herd was affected, including two calves born to the patient who were in close contact with their mother, it was concluded the presentation was most likely due to a hypersensitivity reaction to the dead or dying larvae. Fly repellent is now regularly applied around the eye of this rhinoceros, and a protective face mask has been fitted. Ongoing periodic relapses are treated with oral ivermectin, topical antibiotics, and steroids. 相似文献
74.
75.
Emmanouil Tzimtzimis Maria Kouki Stefania Rampidi Matina Giannikaki Georgia Karnezi Lysimachos G. Papazoglou 《The Canadian veterinary journal. La revue veterinaire canadienne》2016,57(5):507-510
Duodenal and jejunal resections were performed in a cat with septic peritonitis due to small intestinal perforations by a linear foreign body. Three days later jejunal resection and anastomosis were repeated due to dehiscence of the anastomosis site. This segment of intestine was exteriorized through the body wall and managed with bandages for 5 days before it was surgically replaced into the abdomen. The cat made a full recovery. 相似文献
76.
77.
78.
Alana Batista dos Santos Mara Lúcia Albuquerque Pereira Herymá Giovane de Oliveira Silva Gleidson Giordano Pinto de Carvalho Taiala Cristina de Jesus Pereira Leandro Sampaio Oliveira Ribeiro José Augusto Gomes Azevêdo Maria das Graças Conceição Parada Costa Silva Larisse Borges Sousa Leandro Borges Sousa Daiane de Oliveira Alencar 《Tropical animal health and production》2016,48(3):509-515
79.
80.