利用酶澄清果汁

销售专家约瑟夫最近说“没有酶就不能生产清澈的平果汁。”果汁生产过程的主要难题是果胶,它引起果汁混浊,在某种程度上影响过滤和灌汁的流速。现在可用果胶酶水解果胶,来澄清果汁。市售的果胶酶有:Clarex,Klerzyme,等。     

BEAM-WAVE INTERACTION ANALYSIS IN THE COUPLED DOUBLE CAVITY GYROTRON OSCILLATOR

general equation of electron-wave synchronous interaction is obtained in gyrotron oscillator,in which the effects of guiding center drift and phase of RF field profile is considered.The interactionefficiency is calculated for the second harmonic operation of single TE_(021) mode for a double cavity gyrotronoscillator model,in which the RF field profile and operating parameters of the gyrotron oscillator areregulated in order to get optimum efficiency.It is shown that the efficiency of 53 percent can be obtained for a=1.5.The characteristic of the double cavity configuration is discussed.The bunching processes of thedouble cavities are compared with that of single cavity.The effects of guiding center drift and RF field profilephase on the beam-wave interaction are analysed.     

耦合双腔回旋管的束波互作用分析

本文导出了回旋管中电子与高频场同步互作用方程的普遍形式,考虑了导引中心漂移和场分布相位变化的影响,利用一个双腔回旋管模型,通过调节场分布f(z),计算了TE021模二次谐波单模工作时的互作用效率。计算表明,对=1.5,效率可高达53％。我们还讨论了双腔结构的特点;对单、双腔电子群聚过程进行了比较;分析了导引中心漂移和场分布相位对互作用的影响。     

回旋管输出窗频率特性的研究

本文对回旋管输出窗系统的传输特性进行了理论研究,给出了圆波导径向突变的模式散射的近似公式,研究了输出窗对工作模式的反射和寄生模式的散射的频率响应。实验证实分析是合理的。