全文获取类型
收费全文 | 122篇 |
免费 | 6篇 |
专业分类
林业 | 16篇 |
农学 | 3篇 |
基础科学 | 2篇 |
25篇 | |
综合类 | 6篇 |
农作物 | 22篇 |
水产渔业 | 18篇 |
畜牧兽医 | 30篇 |
园艺 | 2篇 |
植物保护 | 4篇 |
出版年
2023年 | 2篇 |
2022年 | 2篇 |
2021年 | 5篇 |
2020年 | 11篇 |
2019年 | 5篇 |
2018年 | 11篇 |
2017年 | 9篇 |
2016年 | 8篇 |
2015年 | 1篇 |
2014年 | 13篇 |
2013年 | 8篇 |
2012年 | 13篇 |
2011年 | 8篇 |
2010年 | 7篇 |
2009年 | 3篇 |
2008年 | 8篇 |
2007年 | 4篇 |
2006年 | 1篇 |
2005年 | 1篇 |
2004年 | 1篇 |
2002年 | 3篇 |
2001年 | 1篇 |
1999年 | 1篇 |
1992年 | 1篇 |
1989年 | 1篇 |
排序方式: 共有128条查询结果,搜索用时 15 毫秒
71.
Rainak Ghaderi Keyvan Tadayon Sargis Avagyan Pejvak Khaki Soheila Moradi Bidhendi Ken James Forbes Nader Mosavari Mohammad Reza Toroghi Farhad Moosakhani Reza Banihashemi Mohamad Sekhavati Nasim Karimnasab 《Tropical animal health and production》2013,45(4):889-894
Salmonella enterica Enteritidis is the most frequent etiological agent of salmonellosis in humans and poultry. To understand the genetic diversity of S. Enteritidis in Iran, we examined 69 chicken isolates from 18 broiler farms and six non-epidemic human isolates from six geographically distant provinces by multi-locus variable-number tandem repeat analysis (MLVA). Among SE2, SE3, SE5, SE7, SE8, SENTR4, and SENTR7, only SE5 with four and SENTR7 with two alleles, respectively, proved variable giving estimates of locus genetic diversity of 0.58 and 0. In all, six closely related MLVA profiles were identified among which three were commonly represented by human and chicken isolates. This population homogeneity contrasts with the high diversity at these loci reported elsewhere and is likely a consequence of a single clone of S. Enteritidis distributed across Iran. 相似文献
72.
Mohammad MA Talafih K Mohamad MM Khabaz MN 《Pakistan journal of biological sciences: PJBS》2010,13(15):761-764
The aim of this research is to see the effect of intra-arterial infusion of leptin on blood pressure of salt loaded rabbits in vivo. Increased blood pressure was produced in rabbits by giving diets containing 8% sodium chloride for 5 weeks. Leptin in different concentrations was infused intra-arterially into rabbits fed on high salt diets and the response was compared in rabbits fed with low salt diets. High salt diets produced significant increase in blood pressure. In rabbits fed with low salt diet, leptin infused intra-arterially caused an increase in blood pressure while infusion of leptin into rabbits fed with high salt diets does not affect the blood pressure. In conclusion, salt loading to rabbits abolishes the effect ofleptin on cardiovascular system. This may indicate that leptin effect on sympathetic activity is altered by high salt diets in these animals. 相似文献
73.
M.R. Sulaiman E.K. Perimal M.N. Akhtar A.S. Mohamad M.H. Khalid N.A. Tasrip F. Mokhtar Z.A. Zakaria N.H. Lajis D.A. Israf 《Fitoterapia》2010
The anti-inflammatory activity of zerumbone (1), a natural cyclic sesquiterpene isolated from Zingiber zerumbet Smith was investigated using carrageenan-induced paw edema and cotton pellet-induced granuloma tissue formation test in mice. It was demonstrated that intraperitoneal administration of 1 at a dose of 5, 10, 50 and 100 mg/kg produced significant dose-dependent inhibition of paw edema induced by carrageenan. It was also demonstrated that 1 at similar doses significantly suppressed granulomatous tissue formation in cotton pellet-induced granuloma test. 相似文献
74.
75.
76.
Lipoxygenase (LOX)-inhibiting compounds from the leaves of Chisocheton polyandrus Merr. were isolated in this study using a bioactivity-guided fractionation technique. Two dammarane triterpenoids, dammara-20,24-dien-3-one (1) (IC(50)=0.69±0.07 μM) and 24-hydroxydammara-20,25-dien-3-one (2) (IC(50)=1.11±0.38 μM), were isolated and identified based on the soybean LOX assay. Dammara-20,24-dien-3-one (1) exhibited dual inhibition of both human 5-LOX (IC(50)=24.27±2.92 μM) and cyclooxygenase-2 (COX-2) (IC(50)=3.17±0.90 μM), whereas 24-hydroxydammara-20,25-dien-3-one (2) did not exhibit any significant inhibitory effects. This report is the first to detail the inhibition of LOX and COX by both C. polyandrus and its isolated compounds. 相似文献
77.
Mohamad K Olsson M Andersson G Purwantara B van Tol HT Rodriguez-Martinez H Colenbrander B Lenstra JA 《Reproduction in domestic animals》2012,47(Z1):18-20
Both Bos indicus (zebu) and Bos javanicus (banteng) contribute to the Indonesian indigenous livestock, which is supposedly of a mixed species origin, not by direct breeding but by secondary cross-breeding. Here, the analysis of mitochondrial, Y-chromosomal and microsatellite DNA showed banteng introgression of 10-16% in Indonesian zebu breeds with East-Javanese Madura and Galekan cattle having higher levels of autosomal banteng introgression (20-30%) and combine a zebu paternal lineage with a predominant (Madura) or even complete (Galekan) maternal banteng origin. Two Madura bulls carried taurine Y-chromosomal haplotypes, presumably of French Limousin origin. There was no evidence for zebu introgression in five populations of the Bali cattle, a domestic form of the banteng. 相似文献
78.
Labisia pumila is a traditional herb widely used as post-partum medication for centuries. Recently, extensive researches have been carried out on the phytochemical identification, biological and toxicological studies for the herb. Phytochemicals found in the herbal extract showed high antioxidant properties, which were essential for various pharmacological activities. The significant findings are anti-estrogenic deficiency and -immunodeficiency diseases. Another finding that has considerable impact on natural product research is the contribution of L. pumila in promoting skin collagen synthesis. The performance of the herb as anti-aging agent due to natural aging process and accelerated by UV radiation was reviewed critically. 相似文献
79.
Abu-Dalbouh MA Ababneh MM Giadinis ND Lafi SQ 《Tropical animal health and production》2012,44(1):49-54
Two hundred and fifty-five biological samples (106 aborted foetal tissue samples and 149 blood samples from aborted sheep
and goats) were collected from 188 animals during the lambing season from September 2009 to April 2010 from the Mafraq region
of Jordan. The sampled animals belonged to 93 goat and sheep flocks that had cases of abortion. A total of 169 (66.3%) biological
samples were collected from sheep and 86 (33.7%) from goats. Seventy-six (29.8%) biological samples (45 blood and 31 tissue
samples) were positive for Toxoplasma gondii by PCR assay. The positive samples were obtained from 43 sheep and 23 goats. The overall toxoplasma-specific prevalence rate
was 35.1% (66/188). Forty flocks (43%) had at least one T. gondii PCR-positive animal. The risk factors related to flock health status and farm management that are hypothesized to be associated
with T. gondii PCR positivity were also assessed using multiple logistic regressions. The presence of cats (OR = 4.74), a large flock size
(OR = 2.76) and the method of disposing the aborted foetuses (OR = 3.77) were all statistically significant (P < 0.05) risk factors that were positively associated with toxoplasma positivity in goat and sheep flocks. 相似文献
80.
Abd Rahman Jabir Mohd Din Kian Kai Cheng Mohamad Roji Sarmidi 《Communications in Soil Science and Plant Analysis》2017,48(3):274-284
An experiment was conducted to assess the effect of different extraction of compost extracts on pak choi (Brassica rapa cv. chinensis) under two fertilizer regimes. Aerated compost extract (ACE) and non-aerated compost extract (NCE) were prepared and all treatments (ACE + organic fertilizer, NCE + organic fertilizer, ACE + inorganic fertilizer, NCE + inorganic fertilizer) were conducted in randomized block design. Soil microbiological analysis after treatment was done. Plants grown with ACE + inorganic fertilizers yielded maximum in fresh, dry weight, and N mineral content compared to others. Plants receiving NCE + organic fertilizers produced a higher phenolic content, whereas antioxidant capacity was observed maximum at NCE + inorganic fertilizers. Soil microbiological analysis significantly increased in yeast and nitrogen fixing bacteria count at ACE + organic fertilizers. The co-application of inorganic fertilizers and compost extract had a significant effect on vegetative growth, quality of the pak choi, and soil fertility. 相似文献