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排序方式: 共有91条查询结果,搜索用时 31 毫秒
1.
Yaiza Benavent-Gil Cristina M. Rosell 《Plant foods for human nutrition (Dordrecht, Netherlands)》2017,72(4):353-359
Studies on porous starch have been directed to explore different industrial applications as bio-adsorbents of a variety of compounds. However, the analysis of starch digestibility is essential for food application. The objective of this study was to determine the impact of porous structure on in vitro starch digestibility. Porous starches were obtained using a range of concentrations of amyloglucosidase (AMG), α-amylase (AM), cyclodextrin-glycosyltransferase (CGTase) or branching enzyme (BE). Porous starches exhibited major content of digestible starch (DS) that increased with the intensity of the enzymatic treatment, and very low amount of resistant starch (RS). Porous starches behaved differently during in vitro hydrolysis depending on their enzymatic treatment. AMG was the unique treatment that increased the digestive amylolysis and estimated glycemic index, whereas AM, CGTase and BE reduced them. A significant relationship was found between the pore size and the severity of the amylolysis, suggesting that a specific pore size is required for the accessibility of the digestive amylase. Therefore, pore size in the starch surface was a limiting factor for digestion of starch granules. 相似文献
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Villacrés Elena Cueva Paúl Díaz Milene Rosell Cristina M. 《Plant foods for human nutrition (Dordrecht, Netherlands)》2020,75(4):569-575
Plant Foods for Human Nutrition - In this study the breadmaking potential of lupin flour from L. mutabilis after being debittered (DLF) and solid state fermented (FLF) was evaluated in lupin-wheat... 相似文献
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A substance P antagonist, [D-Pro2, D-Trp7,9]SP, inhibits inflammatory responses in the rabbit eye 总被引:6,自引:0,他引:6
G Holmdahl R H?kanson S Leander S Rosell K Folkers F Sundler 《Science (New York, N.Y.)》1981,214(4524):1029-1031
Neurogenic factors released by antidromic nerve stimulation are thought to be in part responsible for the vasodilation and breakdown of the blood-aqueous barrier that follows trauma to the eye. Substance P is one candidate for the mediation of the inflammatory response since it is thought to be a neurotransmitter in sensory afferents and since exogenous substance P is capable of eliciting a response characteristic of inflammation. In rabbits, intravitreal or topical application onto the eye of a specific substance P antagonist, [d-Pro2, D-Trp7,9]SP, inhibited not only the irritant effects of exogenous substance P but also the inflammatory response to a standardized trauma (infrared irradiation of the iris). These observations suggest that substance P, or a related peptide, is a neurogenic mediator of the inflammatory response in the eye. 相似文献
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A copper-nitrosyl intermediate forms during the catalytic cycle of nitrite reductase, the enzyme that mediates the committed step in bacterial denitrification. The crystal structure of a type 2 copper-nitrosyl complex of nitrite reductase reveals an unprecedented side-on binding mode in which the nitrogen and oxygen atoms are nearly equidistant from the copper cofactor. Comparison of this structure with a refined nitrite-bound crystal structure explains how coordination can change between copper-oxygen and copper-nitrogen during catalysis. The side-on copper-nitrosyl in nitrite reductase expands the possibilities for nitric oxide interactions in copper proteins such as superoxide dismutase and prions. 相似文献
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J Plana M Vayreda J Vilarrasa M Bastons R Rosell M Martinez A San Gabriel J Pujols J L Badiola J A Ramos 《Veterinary microbiology》1992,33(1-4):203-211
In March of 1991, a disease that affected pregnant sows and caused a high mortality in unweaned piglets was detected in Spain. Based on the clinical signs observed, mystery swine disease, which had been described recently in Germany, Holland and Belgium, was suspected. From the samples obtained from the affected farm, a filtrable agent (0.22 micron) was isolated on cell culture. It produced cytopathic effects, its replication was intracytoplasmic, it was sensitive to chloroform, and cross-reacted with a Lelystad reference serum. When inoculated into pregnant sows, the agent produced inappetence for 2-4 days, without hyperthermia. One of the sows aborted at 100 days of gestation; the two others had delayed parturitions (days 115 and 116). There was a mixture of healthy piglets, mummified fetuses, stillbirths and weak piglets. Microscopic examination of the lungs of healthy piglets killed at 8 and 12 days of life revealed the presence of interstitial pneumonia. The sera from the three sows at 39 days after infection cross-reacted with the Lelystad virus (titres > or = 1/640), whereas pre-inoculation sera did not recognize it (titres < or = 1/10). This is the first report from Spain of the isolation of an agent (antigenically related to the Lelystad virus), capable of reproducing the disease previously designated as mystery swine disease. 相似文献
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Spatial variability in grape yield and quality influenced by soil and crop nutrition characteristics
J. Arnó J. R. Rosell R. Blanco M. C. Ramos J. A. Martínez-Casasnovas 《Precision Agriculture》2012,13(3):393-410
Knowledge of spatial variability of soil fertility and plant nutrition is critical for planning and implementing site-specific
vineyard management. To better understand the key drivers behind vineyard variability, yield mapping from 2002 to 2005 and
2007 (the monitor broke down in 2006) was used to identify zones of different productive potential in a Pinot Noir field located
in Raimat (Lleida, Spain). Simultaneously, the vineyard field was sampled in 2002, 2003 and 2007, applying three different
schemes (depending on the number of target vines in different grape yield zones). The sampling carried out in 2002, which
involved different soil, topographic and crop properties (mineral contents in petiole), made it possible to evaluate the influence
of these parameters on the grape yield variability. The zones of lowest yield coincided with locations in which the nutritional
status of the crop exhibited the lowest values, particularly with respect to petiole contents of calcium and manganese. Sampling
systems adopted in 2003 and 2007 (grape quality and soil attributes) confirmed the inverse spatial correlation between grape
yield and some grape quality parameters and, more importantly, showed that the percentage of soil carbonates had a great influence
on grape quality probably due to the reduced availability of manganese in calcareous soils. Site-specific vineyard management
could therefore be considered using two different strategies: variable-rate application of foliar fertilizers to increase
the yield in areas with low production and also foliar or soil fertilizers to improve the quality specifications in some areas. 相似文献