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Ultrasonic wave extraction and simultaneous analysis of polycyclic aromatic hydrocarbons (PAHs) and phthalic esters in soil
Polycyclic aromatic hydrocarbons Phthalic Acid Esters Ultrasonic assistant extraction technique
2018/3/23
A method is developed for detection of polycyclic aromatic hydrocarbons (PAHs) and Phthalic Acid Esters (PAEs) in soil samples. Ultrasonic Wave Extraction under airtight circumstances is adopted to ex...
茶叶微波超声波耦合动态逆流浸提工艺（Combined Dynamic Countercurrent Extraction Technology with Microwave Ultrasonic-wave Extraction for Tea）
茶叶 微波 超声波 耦合 浸提
2010/12/29
应用设计的微波超声波耦合动态逆流浸提机，以水为溶剂，茶鲜叶为原料，进行了茶叶有效成分的浸提试验。研究了浸提功率、料液比和浸提时间3因素对茶叶主要有效成分浸提率的影响，并通过L9(34)正交试验设计，对浸提工艺进行优化。结果显示，该设备的最佳浸提工艺参数为：浸提时间6min(微波)+6min(超声波)，料液比1∶20，浸提功率1.0kW(微波)+1.0kW(超声波)。茶多酚、氨基酸、咖啡碱的...
纤维素酶协同超声波辅助提取苦瓜多糖工艺优化（Optimization on Cellulase and Ultrasonic Wave Assisted Extraction Technology of Momordica charantia Polysaccharides）
苦瓜 多糖 纤维素酶 超声波
2010/12/28
为了得到纤维素酶协同超声波法提取苦瓜多糖的最佳工艺条件，利用Box-Behnken的中心组合设计及响应面法（RSM）探讨了超声波功率、酶量、料液比、时间、pH值和温度等因素的优化组合，通过建立二次回归模型，确定其最佳提取工艺条件为: 超声波功率390W、纤维素酶量3500U/ g（酶活200U/mg以上）、料液比1∶38、时间40min、pH值5、温度56℃。在此工艺条件下，苦瓜多糖...
Defining the relation between tensile strength and ultrasonic wave velocity in spheroidal cast iron manufactured in the foundry JAFAR S.A
spheroidal cast iron tensile strength ultrasonic control index
2011/3/29
This work presents results of ultrasonic evaluation of mechanical properties of spheroidal cast iron manufactured under the production conditions of FA JAFAR S.A.. Tests were conducted on wedge casts ...
Defining the relation between tensile strength and ultrasonic wave velocity in spheroidal cast iron manufactured in the foundry JAFAR S.A
spheroidal cast iron tensile strength ultrasonic control index
2011/3/29
This work presents results of ultrasonic evaluation of mechanical properties of spheroidal cast iron manufactured under the production conditions of FA JAFAR S.A.. Tests were conducted on wedge casts ...
Defining the relation between mechanical properties and ultrasonic wave velocity in spheroidal cast iron manufactured in the foundry Metal-Odlew s.c.
spheroidal cast iron mechanical properties ultrasonic control index
2011/3/29
This work presents results of ultrasonic evaluation of mechanical properties of spheroidal cast iron manufactured under the production conditions of Metal-Odlew s.c. Tests were conducted on wedge cast...
Defining the relation between mechanical properties and ultrasonic wave velocity in spheroidal cast iron manufactured in the foundry Metal-Odlew s.c.
spheroidal cast iron mechanical properties ultrasonic control index
2011/3/29
This work presents results of ultrasonic evaluation of mechanical properties of spheroidal cast iron manufactured under the production conditions of Metal-Odlew s.c. Tests were conducted on wedge cast...