搜索结果: 1-15 共查到“工学 tomato”相关记录28条 . 查询时间(0.062 秒)
3D Surface Modeling of Tomato Plants Using Close-Range Photogrammetry
3D modelling close-range photogrammetry object reconstruction
2015/12/14
The production of agricultural cultivates under intensive systems requires of big quantities of pesticides for fitosanitary control.
Pesticides application is a major component of tomato production c...
egradation and Formation of Fruit Color in Tomato (Solanum lycopersicum L.) in Response to Storage Temperature
Tomato Fruit Color
2016/6/2
Temperature is the most important environmental factor in the post-harvest life of tomato fruit because it has a tremendous influence on the rate of biological processes, including development of red ...
Utilization of Egyptian Tomato Waste as a Potential Source of Natural Antioxidants Using Solvents, Microwave and Ultrasound Extraction Methods
Egyptian Tomato Waste Natural Antioxidants
2016/6/2
This study was conducted to access the extraction yield of antioxidant and their activity from Egyptian tomato waste. Conventional and novel assisted extraction methods (ultrasound and microwave) usin...
Effect of Aframomum danielli Extract on some Chemical and Antioxidant Components of Roma Tomato Variety during Storage
Aframomum danielli Extract Chemical and Antioxidant Components
2016/6/2
Postharvest treatment of tomato (Lycopersicon esculentum Mill) fruits with synthetic fungicide is receiving major criticism due to its health risk and negative ecological inputs. This work was designe...
Effect of Different Temperatures and Parameters Analysis of the Storage Life of Fresh Cucumber and Tomato using Controlled Atmosphere Technology
Different Temperatures Parameters Analysis
2016/6/2
The objectives of this study were to evaluate the effect of different controlled temperatures and analyze the measures and/or parameters of the controlled atmosphere storage for fresh cucumbers and to...
Microwave drying behaviour of tomato slices
drying rate diffusion moisture content colour analysis
2014/2/24
The microwave drying behaviour of tomato slices was investigated experimentally to determine the effects of microwave power on the drying rate, energy consumption, and dried product quality in terms o...
Effect of Ethylene and 1-Methylcyclopropene (1-MCP) on Color and Firmness of Red and Breaker Stage Tomato Stored at Different Temperatures
Ethylene and 1-Methylcyclopropene Color
2016/6/1
The red color of the tomato fruit during ripening is due to the presence lycopene, a compound known for its antioxidant property. This compound is influenced by temperature, ethylene and 1-Methylcyclo...
Trace Metal Contents in Some Brands of Canned Tomato Paste in Nigerian Market
Trace Metal Contents Nigerian Market
2016/6/1
Concentrations of metals (copper, zinc, lead and iron) were examined in some popular brands of canned tomato paste in Nigerian markets with a view of providing information on the risk associated with ...
The objectives of this study were to investigate the influence of osmotic solutions and their concentration on mass transfer and observe any effect on lycopene content, color and melting temperature (...
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。
两种高压电场处理形式对绿熟番茄贮藏品质的影响（Effect of Two Types of High Voltage Electric Field Treatments on the Storage Quality of Mature Green Tomato Fruit）
番茄 贮藏品质 静电场 交变电场
2010/12/28
以“朝研219”番茄为试材，研究了200kV/m、2h/d的负高压间歇静电场（简称稳恒电场）和波动场强-200～200kV/m、频率40kHz的交变电场预处理2h（简称交变电场）两种不同处理对绿熟番茄果实适温（13℃）贮藏品质的影响。结果表明：两种高压电场处理均能够显著减轻番茄果实的腐烂指数（P<0.05），电场处理延缓了果实硬度和可溶性糖、果皮叶绿素含量的下降，以及可滴定酸、番茄红素含...
Enzyme Production and Nitrogen Fixation by Free, Immobilized and Coimmobilized Inoculants of Trichoderma harzianum and Azospirillum brasilense and Their Possible Role in Growth Promotion of Tomato
coimmobilization alginate Trichoderma harzianum Azospirillum brasilense enzyme production
2010/10/14
A plant growth-promoting rhizobacterium (Azospirillum brasilense strain Az) and a biocontrol
fungus (Trichoderma harzianum strain T24) have been evaluated for their individual
and combined productio...
Mathematical Modeling of Tomato Terminal Velocity in Water
Design sorting systems hydro-sorting terminal velocity
2010/9/29
In this study, the terminal velocity of tomato (cv. Rio grands) was theoretically formulated and then determined experimentally using a water column. Some characters of tomato affecting its terminal v...
番茄果实热导率测试装置参数实验（Optimization of the Parameters of Designed Apparatus for Determination of Thermal Conductivity of Tomato Fruits）
番茄 热导率 测试装置 操作参数
2009/11/3
微热探针法测试热导率系统已被广泛应用于食品材料热导率的测试中。但是，由于实验条件或实验设备的限制，基于理想的线热源瞬态模型测量原理得到的结果会产生某些测试误差。针对测试误差，从探针输入电压、加热时间和样品的径向尺寸等装置操作参数的选择着手，通过实验，得到装置系统测定中输入电压的最佳值为2.5～6.5V、加热时间最佳值为20～50s。最后通过实际测试，得到了番茄果实在不同成熟阶段的热导率变化规律。
自然条件下番茄成熟度机器人判别模型（Judgment Model on Maturity of Harvesting-tomato for Robot under Natural Conditions）
农业机器人 番茄 计算机视觉
2009/11/3
针对机器人采摘番茄因用途不同而进行选择性收获的问题，对人工选择的番茄图像样本集进行特征分析，从番茄的摄像机透视几何出发，提出将番茄表面红色调所占着色面积比与其他色调所占着色面积比的差值作为描述番茄成熟程度的主要分组特征。利用该特征并结合番茄着色区域整体色调均值和方差，用BP神经网络建立番茄成熟度的判别模型。通过模型测试和噪声水平测试表明，将着色面积比差值和色调均值作为模型的两个输入时，模型的准确判...