FESTOOL绿色1＋1干研磨样板店

随着汽车保有量的增加，汽车维修站的客户越来越多，日常维修工作也越来越繁忙。对于车辆的钣喷维修来说，如果在车身漆面修补作业中采用水磨工艺，花在打磨上的工时将占到整个喷漆工作的60％。因此，维修站需要采用更高效的打磨工艺。费斯托无尘干研磨系统可以真正帮助维修站缩短打磨时间。提高维修效率。

一种高效干冻研磨破碎酵母细胞的方法

[目的]建立简便有效的破碎酵母细胞的方法。[方法]离心收集酵母细胞,将培养液洗涤干净后直接将酵母细胞和研钵预冷至-20℃,然后在冰冻状态将酵母细胞置于研钵中研磨,在相差显微镜下观察酵母细胞的形态,计算细胞破碎效率,并提取破碎酵母的染色体DNA和蛋白质。[结果]镜下观察研磨后酵母完整细胞数明显减少,并有大量细胞碎片。计数得出研磨1、2、3、4、6、8、10min后破碎细胞的百分数为13.7%、30.1%、52.0%、85.1%、93.4%、94.6%、95.9%,0.1g酵母细胞研磨后抽提到的DNA和蛋白质的量分别为20μg和2.928mg。常规条件干冻酵母细胞直接研磨获得良好的破碎效果,破碎效率达95.9%。[结论]该研究建立了一种简便、高效而又经济的裂解酵母细胞的方法。

聚晶金刚石研磨机理研究

通过 PCD表面干研磨、湿研磨、钝湿研磨等对比试验 ,观察干研磨、湿研磨表面形貌 ,研究了 PCD材料研磨机理 .试验结果表明 ,干研磨去除率远大于湿研磨去除率 ,并可使 PCD表面达到镜面 ;湿研磨、钝湿研磨不能使其达到镜面 .干研磨时 ,材料的去除机理以热化学去除为主 ,基本不发生疲劳脆性去除 ;湿研磨时 ,材料去除机理以疲劳脆性去除为主 。

混合法糊树脂糊粘度影响因素的研究

本文从生产工艺、喷雾干燥的工艺条件及干研磨等几方面来研究影响混合法PVC糊树脂糊粘度的原因并研究了降低糊粘度提高树脂质量的方法，

治疗气管炎小验方

取菠菜籽250 g,焙干研磨成面,然后用适量蜂蜜调匀,做成丸状保存。每天服用3次,每次约10 g。可有效地抑制气管炎的发作,方法简便,请君一试。

香菇馒头加工工艺

将香菇、黄豆烘干研磨成粉后调配到面粉中制成香菇保健馒头，不但增加了馒头的营养价值，而且丰富了馒头的品种和口感。值得一提的是其不含任何防腐剂和其他添加剂，吃起来方便、快捷、营养、安全。

Improved Disturbance Observer (DOB) Based Advanced Feedback Control for Optimal Operation of a Mineral Grinding Process

Advanced feedback control for optimal operation of mineral grinding process is usually based on the model predictive control (MPC) dynamic optimization. Since the MPC does not handle disturbances directly by controller design, it cannot achieve satisfactory effects in controlling complex grinding processes in the presence of strong disturbances and large uncertainties. In this paper, an improved disturbance observer (DOB) based MPC advanced feedback control is proposed to control the multivariable grinding operation. The improved DOB is based on the optimal achievable H 2 performance and can deal with disturbance observation for the nonminimum-phase delay systems. In this DOB-MPC advanced feedback control, the higher-level optimizer computes the optimal operation points by maximize the profit function and passes them to the MPC level. The MPC acts as a presetting controller and is employed to generate proper pre-setpoint for the lower-level basic feedback control system. The DOB acts as a compensator and improves the operation performance by dynamically compensating the setpoints for the basic control system according to the observed various disturbances and plant uncertainties. Several simulations are performed to demonstrate the proposed control method for grinding process operation.