搜索结果: 1-15 共查到“农业工程 properties”相关记录34条 . 查询时间(0.078 秒)
Effect of moisture content on some physical properties of Canarium schweinfurthii Engl. fruits
sphericity area density porosity variety
2016/12/9
The effect of moisture content on some physical properties of three varieties of Canarium schweinfurthii Engl. fruits (small, large and long) was studied at 40.91%, 34.92%, 23.44%, 18.5% and 11.03% mo...
Mechanical properties of composite material reinforced with textile waste from the process of tyres recycling
epoxy resin quality testing microfiber testing
2016/9/2
The paper deals with the polymeric fibre composite with the reinforcement on the basis of the waste from the process of the tyres recycling. The aim of the research was the use of the material of clea...
Changes in selected wine physical properties during the short-time storage
white wine temperature density, physical parameters time of storage
2016/9/2
This article is focused on the effect of temperature and short-term storage on the physical properties of wine made in Slovakia. All measurements were performed during temperature manipulation in the ...
Evaluations of the effects of soil properties and electrical conductivity on the water content reflectometer calibration for landfill cover soils
soil electrical conductivity soil index properties time domain reflectometry volumetric water content WCR calibration
2016/8/2
This study presents soil-moisture calibrations using low-frequency (15–40 MHz) time domain reflectometry (TDR) probe, referred to as water content reflectometer (WCR), for measuring the volumetric wat...
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 ...
Thermal and physical properties modelling of terebinth fruit (Pistacia atlantica L.) under solar drying
thin layer moisture diffusivity shrinkage colour rupture energy
2015/12/30
A laboratory solar dryer was used to study terebinth fruit drying. Two solar collectors were adjusted in east-west directions with the angle of 45°. Initial moisture content of terebinth fruit was dri...
Determination of oxygen permeability and mechanical properties of the aluminium paper foils
packaging modulus of elasticity butter curd
2014/11/28
The paper deals with the determination of the oxygen permeability and mechanical properties of butter and curd aluminium paper foils Radaflex applied in the food packaging. Foil Radaflex is a paper fo...
Monitoring the impact of tyre inflation pressure on tensile properties of forest tractors
tractive power tensile strength forest soil slippage
2014/11/28
The article discusses monitoring of the impact of tyre inflation pressure on tensile properties of forest tractors. The
LKT 81 T forest tractor, manufactured by ZŤS TEES, Martin (Slovak Republi...
Selected properties of agricultural biomass
gravimetry dry mass combustible matter ash higher heating value
2014/2/24
h e presented contribution deals with the quantifi cation of moisture, combustible matter content, ash content and
higher heating value of the selected types of biomass used for the heat produ...
100 Hz～3.98 MHz下苹果虎皮病果实电特性研究（Dielectric Properties of Fuji Apple Superficial Scald in the 100Hz～3.98MHz Range）
苹果 虎皮病 电特性
2010/12/29
为了研究富士苹果虎皮病病果电特性的变化规律，探讨利用电特性参数的变化来反映苹果内部的物理化学变化，运用LCR型电子测量仪测定了100Hz～3.98MHz频率、（20±1）℃恒温条件下贮藏1、8、15、22和29d的虎皮病果实复阻抗、电抗、电导、电容和介质损耗系数等电学参数。结果显示：在同一贮藏时间下，随着频率的增加，果实的复阻抗、电抗值在减小，电导值则在增加；而电容和果实的介质损耗系数变化则没...
典型储粮环境下储藏大米糊化特性试验（Gelatinizing Properties of Stored Milled Rice under Typical Storage Conditions）
大米 储藏
2010/12/29
选择籼型商品大米，采用可编程人工气候箱，依据中国典型储粮环境的年平均温度、湿度，在模拟储藏条件分别设定为15℃不控湿度，15℃、相对湿度75%，20℃、相对湿度65%，25℃、相对湿度65%，30℃、相对湿度80%和自然储藏环境下，定期测定大米的糊化特征值。结果表明: 随着储藏时间的延长，峰值粘度、最终粘度和保持粘度出现波动且呈总趋势增加；回生值在储藏前期各储藏条件下变化不大，而在储藏后期，常温和...
高温处理对食用调和油微波介电特性与品质的影响（Effect of High-temperature Heat Treatment on Microwave Dielectric Properties and Qualities of Mixed Edible Oil）
调和油 高温处理 相对介电常数 介质损耗因数
2010/12/29
以食用调和油为研究对象，采用同轴探头技术测量了高温处理（120～240℃，3～15h）后调和油在200～4500MHz的微波介电特性和品质指标。结果表明：未处理调和油的相对介电常数ε′r和介质损耗因数ε″r随频率的变化而变化，经高温处理后ε′r和ε″r基本不随频率改变。与未受高温处理相比，处理使同频率下调和油的ε′r减小，ε″r增大。高温处理的温度、时间对介电参数值有一定的影响。当温度大于18...
基于分形理论的地下滴灌灌水器水力特性研究（Research on the Hydraulic Properties of SDI Emitter Based on Fractal Theory）
地下滴灌 分形特征 土壤颗粒质量分形维数
2010/12/29
为了研究滴头工作压力和土壤物理特性对地下滴灌灌水器流量的影响，采用分形理论分析各种级配土壤的分形特征；以土壤颗粒质量分形维数、灌水器工作压力、土壤容积密度、土壤初始含水率为试验因素，运用混合水平均匀设计方法进行试验。结果表明，粘粒含量大小是土壤分形维数的主要影响因素，土壤分形维数随着粘粒含量的增加而增大；PLASSIM公司地下滴灌灌水器流量随土壤分形维数的增大而减小，即土壤质地越细地下滴灌滴头流量...
鹿肉盐溶蛋白热诱导凝胶特性影响因素试验（Properties of Venison Protein Gelatin and Mathematical Model）
鹿肉 盐溶蛋白热诱导凝胶 持水性 断裂强度
2010/12/28
通过单因素试验研究各因素对鹿肉盐溶蛋白热诱导凝胶特性参数的影响，得出：持水性和断裂强度随食盐、六偏磷酸钠、焦磷酸钠和多聚磷酸钠用量的增加先增大后减小，粘度随其用量增加逐渐增大；随着pH值增大，持水性先显著后缓慢增大，断裂强度和粘度先增大后减小；随着温度升高，持水性先减小后增大，断裂强度先增大后减小，粘度先显著后缓慢增大。借助均匀组合设计试验和二次多项式回归方程探讨各因子与凝胶特性参数间关系，得到各...
去叶芹菜纸的介观结构及机械性能研究（Properties and Micro-structure of Leaf Cut-off Celery Paper）
蔬菜纸 芹菜纸 机械性能
2010/12/28
为提高用于包装的蔬菜纸机械性能，采用整棵或分切后打浆并配合打浆的粗细程度，在中试条件下制备了2种去叶芹菜纸样本。利用L&W纤维分析仪分析了打浆粗细程度，利用测量显微镜及显微图像分析系统表征了芹菜纸的介观结构，在标准环境下测试了机械性能并分析了变化情况。结果表明，去叶芹菜纸样本S1的抗张强度是样本S2的1.323倍；与带叶芹菜纸相比，总体上去叶芹菜纸的抗张强度是带叶芹菜纸的2.326倍，且断裂延伸率...