搜索结果: 1-15 共查到“知识库 工学 Vacuum”相关记录58条 . 查询时间(0.203 秒)
Influence of Technology and Ripening on Textural and Sensory Properties of Vacuum Packaged Ewe’s Cheese
texture sensory characteristics ewe’s milk cheese storage vacuum packaging
2016/12/9
The effect of curd cooking temperature (40 and 42°C), pressing, and ripening on textural and sensory properties of vacuum packaged semi-cooked ewe’s milk cheese was studied. Chemical and microbiologic...
Influence of temperature on vacuum drying characteristics, functional properties and micro structure of Aloe vera (Aloe barbadensis Miller) gel
therapeutic moisture ratio activation energy
2015/12/30
Aloe vera possesses therapeutic, antioxidant and some other functional properties. These properties may be affected by processing operations. The present study investigated the influence of operating ...
Likely values of the Higgs vacuum expectation value
Function the higgs vacuum expectations the atoms the standard model the yukawa coupling
2014/12/18
We make an estimate of the likelihood function for the Higgs vacuum expectation value (vev) by imposing anthropic constraints on the existence of atoms while allowing the other parameters of the stand...
Low-pressure treatment to control food-infesting pests (Tribolium castaneum, Sitophilus granarius) using a vacuum packing machine
food protection ood safety red flour beetle granary weevil non chemical control temperature influence vacuum packing food
2014/2/24
Since recently, the food industry has been faced with serious problems regarding pest-infested food commodities and deregistration of many chemical biocides by the EU Biocide Directive. These conditio...
Negative differential thermal conductance through vacuum
Negative differential thermal conductance through vacuum
2015/8/7
We propose a scheme for achieving negative differential thermal conductance in near-field electromagnetic thermal transfer. As an example, we show that the scheme can be implemented with two sla...
A Parametric Study on the Starting Transients of a Vacuum Ejector-Diffuser System
Parametric Starting Transients Vacuum Ejector-Diffuser System Fluid Dynamics
2012/4/24
In this endeavor, the transients persisting in a vacuum ejector system (put reference of my old paper) is studied by numerically simulating the flow field, and experimentally validating the simulated ...
Experimental study on the feasibility of explosion suppression by vacuum chambers
Vacuum chamber Suction Explosion suppression Specific impulse Overpressure–impulse guideline (P–I guideline)
2012/3/28
In view of the invalidity of suppression and isolation apparatus for gas explosion, a closed vacuum chamber structure for explosion suppression with a fragile plane was designed on the base of the suc...
Effect of high pressure treatment on microbial populations of sliced vacuum-packed cooked ham
High hydrostatic pressure DGGE Weissella viridescens Cooked ham
2012/8/14
In this study, culture-dependent and culture-independent approaches were used to reveal the microbial diversity and dynamic changes occurring in sliced vacuum-packed cooked ham after high pressure pro...
Process optimisation of vacuum drying of onion slices
dehydratation optimum value Allium response surface methodology
2014/2/25
Dehydration of untreated and pre-treated onion slices under vacuum was optimised using the response surface methodology. The effects of the drying temperature (50–70°C), slice thickness (1–5 mm), and ...
板栗真空爆壳特性影响因素的试验（Experiment on Factors Influencing Chestnut Vacuum Shelling Performance）
板栗 真空爆壳 影响因素 试验
2010/12/29
采用自制的板栗真空爆壳装置，对影响板栗真空爆壳特性的因素进行了试验研究。试验结果表明，板栗大小、形状对真空爆壳影响显著；爆壳率随绝对压力的降低而增大，爆壳温度的升高和爆壳时间的延长以及在适当温度下对板栗进行预热处理，可有效提高爆壳率。板栗真空爆壳的适宜板栗和合理工艺条件为：板栗大小7.5～10.0 g/个，半球形；预热温度80℃，预热时间40min；绝对压力2kPa，爆壳温度80℃，爆壳时间...
地黄真空红外辐射干燥过程中梓醇降解动力学研究（Degradation Kinetics of Catalpol in Rehmanniae during Vacuum Infrared Radiation Drying）
地黄 梓醇 真空红外辐射干燥
2010/12/29
以地黄为真空红外辐射干燥试验的原料，在确定地黄中梓醇提取方法为超声+冷浸工艺的基础上，进行了干燥过程中梓醇降解动力学研究。结果表明：地黄真空红外辐射干燥中梓醇降解动力学不符合零级和一级反应动力学。通过对一级反应动力学方程引入一个与辐射板温度有关的参数gT，并假设降解速率参数k符合Arrhenius方程，建立了地黄中有效成分梓醇在真空红外辐射干燥过程中的降解动力学模型方程，验证结果表明，该方程模拟效...
番茄采摘机器人真空吸盘装置设计与试验（Design and Test of the Vacuum Suction Device for Tomato Harvesting Robot）
番茄 采摘机器人 真空吸盘装置 设计
2010/12/29
为实现番茄采摘机器人作业时将目标果实从果束中分离，设计了以微型静音空气压缩机和集成式真空发生器为主体的真空吸盘装置，并依据供气压力-负压关系、吸盘拉脱力和真空吸着响应时间测定结果，确定了其控制策略。试验表明，真空吸盘装置平均单次作业的时间和空气消耗量分别为1.5s和0.6L，拉动果实实现35mm水平位移的成功率达92%，空气压缩机功率可以满足采摘效率360个/h的需要。
枸杞热风微波真空组合干燥试验（Experiment on Combining Hot Air and Microwave Vacuum to Dry Lyeium）
枸杞 热风干燥 微波真空
2010/12/29
进行了半干枸杞的微波真空干燥试验，分析了护色处理对新鲜枸杞微波真空干燥效果的影响，对热风微波真空组合干燥、微波真空干燥、热风干燥和自然晾晒4种干燥方式对枸杞干燥效果的影响进行了比较。结果表明，护色处理有利于枸杞的干燥加工；微波真空干燥不适合新鲜枸杞的直接干燥加工，更适合于枸杞的后期干燥；热风微波真空组合干燥具有干燥时间短，感官状态良好，枸杞多糖保存率较高的特点，干燥时间为13.1 h，比热风干燥缩...
微波真空冷冻干燥装置设计与试验（Design and Experiment on Microwave Vacuum Freeze Drying Equipment)
微波 真空冷冻干燥 设计 试验
2010/12/28
阐述了微波真空冷冻干燥装置的总体结构、工作原理以及微波冻干仓的设计要点，详细分析了微波谐振腔、微波真空屏蔽结构和玻璃真空罩的设计，确定了主要工作部件的具体结构和相关参数。冬枣冻干试验研究表明，整机结构合理，性能稳定，安全可靠；与普通真空冷冻干燥相比，在产品质量相同的条件下，干燥时间节省了40.9%，能耗降低55.86%。
真空预冷对非洲菊切花温度和瓶插寿命的影响（Effect of Vacuum Cooling on Temperature and Vase Life of Gerbera Cut Flowers）
真空预冷 热红外成像 鲜切花
2010/12/28
利用热红外成像远程动态控制系统，实时检测非洲菊单支花和花束的舌状花瓣、管状花瓣、茎秆在真空预冷过程中的温度分布和变化，并对冷藏后瓶插期间切花的鲜质量变化率、气孔导度和蒸腾速率进行分析。实验发现，在相同降压速率、冷却时间条件下，单支花和花束不同部位的降温速率和瓶插指标均有明显差异（P<0.05），单支花的预冷终温平均比花束低11.2℃，瓶插寿命比花束长1.7 d。