全文获取类型
收费全文 | 113篇 |
免费 | 9篇 |
专业分类
林业 | 2篇 |
农学 | 2篇 |
基础科学 | 2篇 |
45篇 | |
综合类 | 7篇 |
农作物 | 8篇 |
水产渔业 | 10篇 |
畜牧兽医 | 32篇 |
园艺 | 5篇 |
植物保护 | 9篇 |
出版年
2023年 | 4篇 |
2022年 | 2篇 |
2021年 | 3篇 |
2020年 | 7篇 |
2019年 | 6篇 |
2018年 | 4篇 |
2017年 | 6篇 |
2016年 | 6篇 |
2015年 | 1篇 |
2014年 | 9篇 |
2013年 | 10篇 |
2012年 | 6篇 |
2011年 | 10篇 |
2010年 | 3篇 |
2009年 | 7篇 |
2008年 | 7篇 |
2007年 | 5篇 |
2006年 | 6篇 |
2005年 | 4篇 |
2004年 | 2篇 |
2003年 | 3篇 |
2002年 | 5篇 |
2000年 | 2篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1987年 | 1篇 |
排序方式: 共有122条查询结果,搜索用时 109 毫秒
31.
Ronan A. Mullins MVB DECVS Carlos Sanchez Villamil DVM Laura E. Selmic BVetMed MPH DACVS-SA DECVS Michael S. Tivers BVSc PhD DECVS J. Brad Case DVM MS DACVS Ameet Singh BSc DVM DVSc DACVS Kelley M. Thieman Mankin DVM MS DACVS Davina M. Anderson MA VetMB PhD DSAS DECVS Robert N. White BSc BVetMed DSAS DECVS SFHEA Kathryn M. Pratschke MVB MVM DECVS Hilde de Rooster DVM MVM PhD DECVS Anne Kummeling DVM PhD DECVS Donald A. Yool BVMS PhD DECVS SFHEA Melanie Olive DVM Jean-Philippe Billet Dr vét DECVS Ines Gordo DVM MS Herve Brissot DV DECVS Cameron Broome BVSc DVCS FANZCVS Barbara M. Kirby DVM MS DACVS DECVS 《Veterinary surgery : VS》2020,49(5):958-970
32.
Rodriguez H Reveron I Doria F Costantini A De Las Rivas B Muňoz R Garcia-Moruno E 《Journal of agricultural and food chemistry》2011,59(19):10755-10760
The ability to degrade ochratoxin A was studied in different bacteria with a well-known capacity to transform aromatic compounds. Strains belonging to Rhodococcus, Pseudomonas, and Brevibacterium genera were grown in liquid synthetic culture medium containing ochratoxin A. Brevibacterium spp. strains showed 100% degradation of ochratoxin A. Ochratoxin α was detected and identified by high-performance liquid chromatography-mass spectrometry (HPLC-MS) as a degradation product in the cell-free supernatants. The degradation of ochratoxin A is of public concern for food and environmental safety, because it could contribute to the development of new biological ochratoxin A detoxification systems in foodstuffs. In this study, the degradation of ochratoxin A by bacteria belonging to the food chain was demonstrated for the first time. 相似文献
33.
Valorization of three varieties of grape 总被引:2,自引:0,他引:2
Moufida Saïdani Tounsi Ines Ouerghemmi Wissem Aidi Wannes Riadh Ksouri Hassene Zemni Brahim Marzouk Mohamed Elyes Kchouk 《Industrial Crops and Products》2009,30(2):292-296
In the present investigation, seed methanolic extracts of three Vitis vinifera (Muscat d’Italie, Syrah and Carignan) were assayed for their antioxidant activities. Results showed that there are strong variations in the contents of total phenols (440.97–121.94 mg GAE g−1 DW), flavonoids (48.07–16.81 mg EC g−1 DW) and tanins (37.15–14.9 mg EC g−1 DW) from the studied seeds. The phenolic composition of these extracts was determined by RP–HPLC after acid hydrolysis. The main phenolic compound was quercetin with 27.2% in Muscat d’Italie, 48.8% in Syrah and 28.4% in Carignan. Besides, all seed extracts showed remarkable DPPH radical scavenging activity with IC50 values ranged from 1.8 to 30 μg ml−1. EC50 values of reducing power activity ranged from 100 to 120 μg ml−1. The high phenolic content and the considerable antioxidant activities of vitis seed extracts could potentially be considered as an expensive source of natural antioxidants. 相似文献
34.
35.
Claudia Malena CORBI-BOTTO Sebastian Andres SADABA Elina Ines FRANCISCO Paula Belen KALEMKERIAN Juan Pedro LIRON Egle Etel VILLEGAS-CASTAGNASSO Guillermo GIOVAMBATTISTA Pilar PERAL-GARCIA Silvina DIAZ 《农业科学与工程前沿(英文版)》2014,1(3):175
The genetic diversity and structure of 72 Appaloosa horses belonging to a closed breeding population from an ecological reserve in Buenos Aires, Argentina, was investigated using eight microsatellite markers from the International Society for Animal Genetics panel. Our data showed that this Appaloosa horse population had an elevated degree of genetic diversity (He= 0.746) and did not present a significant increase of homozygous individuals (FIS~0). However, the short tandem repeats, AHT5, ASB2, HTG10 and VHL20, were not in Hardy–Weinberg equilibrium (P-value<0.05). Genetic relationships between this population and other well known horse breeds showed that Appaloosa horses from Argentina could have had their origin in the horses of the Nez Perce’s people in Idaho while other Appaloosa horses may have had influences from Andalusian and Lusitano breeds. This closed breeding population conserves an important degree of Appaloosa genetic diversity and notwithstanding its particular breeding characteristics, represents a valuable genetic resource for conservation. 相似文献
36.
37.
Ons Talbi Zribi Ines Slama Najla Trabelsi Abdelwahed Hamdi Abderrazak Smaoui Chedly Abdelly 《Arid Land Research and Management》2018,32(3):277-290
The combined effects of NaCl-salinity and phosphorus deficiency on biomass production, nutritional status, and photosynthetic activity were studied in Catapodium rigidum: an annual Poacea with fodder potential. Plants were grown in hydroponic conditions for 55 days under two phosphorus (P) supply: 5 (low) or 180?µmol KH2PO4 (sufficient), in the absence or presence of 100?mM NaCl. Obtained results demonstrated that both salinity and P deficiency treatments applied separately reduced substantially plant growth and CO2 assimilation rate with a more marked impact of salt stress. Salinity has no substantial effect on both shoot P concentrations and phosphorus acquisition efficiency independently of P availability. The highest decrease in plant growth (?91%) was observed in plants simultaneously submitted to both stresses suggesting an additive effect of the two stresses and that P deficiency increased the susceptibility of C. rigidum to salinity. This may be linked to a significant decrease in potassium acquisition (?95%), K/Na selectivity ratio (?73%), stomatal conductance (?66%), CO2 assimilation rate (?64%), and shoot water content (66%). Furthermore, plants cultivated under combined salinity and sufficient P supply displayed higher stomatal conductance, CO2 assimilation rate, K/Na selectivity ratio, and plant growth than plants cultivated under combined effects of salinity and P deficiency. These results suggest that adding P to saline soils could be an alternative for alleviating the negative effects of salinity and may ameliorate salinity tolerance. 相似文献
38.
COMPARISON BETWEEN PROTON MAGNETIC RESONANCE SPECTROSCOPY FINDINGS IN DOGS WITH TICK‐BORNE ENCEPHALITIS AND CLINICALLY NORMAL DOGS
下载免费PDF全文
![点击此处可从《Veterinary radiology & ultrasound》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Christine Sievert Henning Richter Katrin Beckmann Patrick R. Kircher Ines Carrera 《Veterinary radiology & ultrasound》2017,58(1):53-61
In vivo diagnosis of tick‐borne encephalitis is difficult due to high seroprevalence and rapid viral clearance, limiting detection of antibodies in blood and cerebrospinal fluid. Magnetic resonance imaging (MRI) characteristics of tick‐borne encephalitis have been reported, however MRI studies can also be negative despite the presence of neurologic signs. Magnetic resonance spectroscopy (1H MRS) is an imaging method that provides additional information about the metabolic characteristics of brain tissues. The purpose of this retrospective cross‐sectional study was to describe brain metabolites using short echo time single‐voxel 1H MRS in dogs with confirmed tick‐borne encephalitis and compare them with healthy dogs. Inclusion criteria for the affected dogs were neurological symptoms suggestive of tick‐borne encephalitis, previous endemic stay and tick‐bite, diagnostic quality brain MRI and 1H MRS studies, and positive antibody titers or confirmation of tick‐borne encephalitis with necropsy. Control dogs were 10, clinically normal beagles that had been used in a previous study. A total of six affected dogs met inclusion criteria. All dogs affected with tick‐borne encephalitis had 1H MRS metabolite concentration alterations versus control dogs. These changes included mild to moderate decreases in N‐acetyl aspartate and creatine peaks, and mild increases in glutamate/glutamine peaks. No lactate or lipid signal was detected in any dog. Myoinositol and choline signals did not differ between affected and control dogs. In conclusion, findings supported the use of 1H MRS as an adjunctive imaging method for dogs with suspected tick‐borne encephalitis and inconclusive conventional MRI findings. 相似文献
39.
40.
In agricultural landscapes, methods to identify and describe meaningful landscape patterns play an important role to understand the interaction between landscape organization and ecological processes. We propose an innovative stochastic modelling method of agricultural landscape organization where the temporal regularities in land-use are first identified through recognized Land-Use Successions before locating these successions in landscapes. These time–space regularities within landscapes are extracted using a new data mining method based on Hidden Markov Models. We applied this methodological proposal to the Niort Plain (West of France). We built a temporo-spatial analysis for this case study through spatially explicit analysis of Land-Use Succession dynamics. Implications and perspectives of such an approach, which links together the temporal and the spatial dimensions of the agricultural organization, are discussed by assessing the relationship between the agricultural landscape patterns defined using this approach and ecological data through an illustrative example of bird nests. 相似文献