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喷气式电化学加工与同轴巨声辅助的研究

Ke Zhai1, Yongkang Liang1, Tengnan Li1

  • 1National & Local Joint Engineering Research Center of Metrology Instrument and System, College of Quality and Technical Supervision, Hebei University, Baoding 071002, China.

Ultrasonics sonochemistry
|September 3, 2024
PubMed
概括

同轴超声波辅助喷气电化学加工 (ECM) 改善了坑道本地化. 增加电解质流速,超声波功率和电压可以提高ECM坑和槽的深度直径比.

关键词:
深度与直径的比率是什么?道蚀刻 道蚀刻喷气式ECM ECM的使用方法超级音响 (Megasonic) 是一个巨大的声音.皮特蚀刻 (pit etching) 是一种采用的方法.

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Bioreactor Controls-II01:18

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In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the fermentor via a sparger...