The oil diffusion pump Figure 2. Vacuum pumping, 1880s style. This type of vacuum pumping system was used by T. Edison in the early manufacture of light bulbs. ("diff pump") has remained the principal high-vacuum pump used on many large vacuum coating systems. During WWII, the company ...
Data Availability Statement Not applicable. Conflicts of Interest The authors declare no conflict of interest. References Dada, O.; Mbohwa, C. Energy from waste: A possible way of meeting goal 7 of the sustainable dSevelopment goals. Mater. Today Proc. 2018, 5, 10577–10584. [Google Scholar...
Fish meat is very perishable because of indigenous and microbial enzymes, which determine spoilage and shelf life. The deterioration processes, which lead to an important, sequential, and progressive modification of the initial state of freshness, are fa
Due to the availability of a new generation of high brightness multi-kilowatt solid state lasers, high-power laser beam welding became a new stimulus. However, some new problems, for example, the weld defects of sagging and spatter, the intense plasma plume and turbulent molten pool flow, are...