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排序方式: 共有6219条查询结果,搜索用时 15 毫秒
961.
Characterization of phenolic composition in Carignan noir grapes (Vitis vinifera L.) from six wine‐growing sites in Maule Valley,Chile 下载免费PDF全文
962.
963.
Hyperspectral Imaging in Tandem with R Statistics and Image Processing for Detection and Visualization of pH in Japanese Big Sausages Under Different Storage Conditions 下载免费PDF全文
964.
Natural vitamin B12 and fucose supplementation of green smoothies with edible algae and related quality changes during their shelf life 下载免费PDF全文
965.
Aldemar Martínez González Electo Eduardo Silva Lora José Carlos Escobar Palacio Oscar Agustín Almazán del Olmo 《International Journal of Hydrogen Energy》2018,43(16):7808-7822
Gasification of oil sludge (OS) from crude oil refinery and biomass was investigated to evaluate hydrogen production and its potential use in diesel oil hydrodesulphurization process. Gasification process was studied by Aspen Hysys® tools, considering different kinetic model for main OS compounds. Air and superheated steam mixtures as gasifying agents were simulated. Gasification parameters like: temperature, syngas chemical composition and gas yield were evaluated. Results showed OS thermal conversion needs a working temperature above 1300 °C to ensure a high conversion (>90%) of OS compounds. Thermal energy requirement for gasification was estimated between 0.80 and 1.25 kWh/kg OS, considering equivalence air (ER) and steam/oil sludge (SOS) ratio between 0.25-0.37 and 0.2–1.5 kg steam/kg OS, respectively. The gas yield was 2.28 Nm3/kg OS, with a H2 content close to 25 mol%, for a H2 potential production about 1.84 Nm3 H2/kg OS; nevertheless, when OS and biomass mixtures are used, hydrogen production increases to 3.51 Nm3 H2/kg OS, meaning 37% of H2 (from natural gas) required for diesel oil hydrodesulphurization could be replaced, becoming an added value technological alternative for OS waste conversion as a source of H2, inducing a considerable reduction of greenhouse gases and non-renewables resources. 相似文献
966.
Microwave heating modelling of a green smoothie: Effects on glucoraphanin,sulforaphane and S‐methyl cysteine sulfoxide changes during storage 下载免费PDF全文
967.
Identification and characterisation of the proteins bound by specific phage‐displayed recombinant antibodies (scFv) obtained against Brazil nut and almond extracts 下载免费PDF全文
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969.
Salmonella and Campylobacter biofilm formation: a comparative assessment from farm to fork 下载免费PDF全文
Alexandre Lamas Patricia Regal Beatriz Vázquez José M Miranda Alberto Cepeda Carlos M Franco 《Journal of the science of food and agriculture》2018,98(11):4014-4032
It takes several steps to bring food from the farm to the fork (dining table), and contamination with food‐borne pathogens can occur at any point in the process. Campylobacter spp. and Salmonella spp. are the main microorganisms responsible for foodborne disease in the EU. These two pathogens are able to persist throughout the food supply chain thanks to their ability to form biofilms. Owing to the high prevalence of Salmonella and especially of Campylobacter in the food supply chain and the huge efforts of food authorities to reduce these levels, it is of great importance to fully understand their mechanisms of persistence. Diverse studies have evaluated the biofilm‐forming capacity of foodborne pathogens isolated at different steps of food production. Nonetheless, the principal obstacle of these studies is to reproduce the real conditions that microorganisms encounter in the food supply chain. While there are a wide number of Salmonella biofilm studies, information on Campylobacter biofilms is still limited. A comparison between the two microorganisms could help to develop new research in the field of Campylobacter biofilms. Therefore, this review evaluates relevant work in the field of Salmonella and Campylobacter biofilms and the applicability of the data obtained from these studies to real working conditions. © 2018 Society of Chemical Industry 相似文献
970.
Chun-Hsing Ho María Francisca Martínez González Cristina Pilar Martín Linares 《Frontiers of Structural and Civil Engineering》2017,11(1):1-7
The objective of this research is to evaluate an impact of asphalt mixture beams with varying sizes of aggregate in the Bending Beam Rheometer (BBR) for testing/predicting thermal cracking properties of asphalt pavements. The BBR test has following benefits: the equipment is cheaper, it uses smaller specimens, faster conditioning, easier availability for quality control, easier to manage, etc. However some concerns have been raised: some consider that the size of the aggregate may affect the test’s results; the other concern is that such small beams cannot represent the whole properties of the asphalt pavement. To address these criticisms, imaging techniques, statistical analysis, and viscoelastic modeling are used. Asphalt thin beams prepared with three different nominal maximum aggregate size (NMAS) (12.5mm, 9.5 mm, and 4.75 mm) were tested at three different temperatures (-18°C, -24°C, and -30°C). Based on results from statistical analyses and viscoelasticity, the ratio of asphalt binders and voids and stiffness differences among the three NMAS specimens are not significant, meaning that the impact of asphalt thin beams prepared with the three NMAS on the prediction of thermal cracking is minimal and can be neglected. 相似文献