منابع مشابه
Influence of Cutting Edge Shape on Residual Stresses of Cut Surface* (Effects of Nose Radius and Cutting Edge Roundness)
In order to obtain basic information on the improving the surface integrity of machined surfaces, the relationship between the residual stress of cut surfaces and the cutting edge shapes of cutting tools was examined. Dry facing on a lathe was performed with cutting tools that had various nose radiuses and cutting edge roundnesses. The residual stresses of the cut surfaces were measured by X-ra...
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“The bigger they are, the harder they fall” is a bit of wisdom that’s been around for a long time. But when it comes to pesticide application, the line should read, “The bigger they are, the closer they fall.” Large droplets are not as likely to drift off-target as smaller droplets. This basic principle lies behind many innovations to reduce drift when spraying herbicides. Nozzle manufacturers ...
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Terahertz (THz) radiation, which lies in the frequency gap between the infrared and microwaves, typically referred to as the frequencies from 100 GHz to 30 THz, has long been studied in fields such as astronomy and analytical science. However, recent technological innovation in photonics and nanotechnology is now enabling THz research to be applied in many more sectors. Today, THz technology is...
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A 17-year-old white woman presented with a 2-year history of increasingly frequent episodes of erythromelalgia involving her hands, feet, and lower legs (Figure). She described the discomfort as “throbbing, burning, stinging.” Her symptoms occurred daily. The episodes involved her feet about 10 to 15 times during the day and involved her hands slightly less frequently. Whenever her feet got war...
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Ming H. Jih, MD, PhD; Paul M. Friedman, MD; Arash Kimyai-Asadi, MD; Edward S. Friedman, MD; Sharon R. Hymes, MD; Leonard H. Goldberg, MD; DermSurgery Associates (Drs Jih, P. M. Friedman, Kimyai-Asadi, and Goldberg), The University of Texas School of Medicine (Dr P. M. Friedman), Baylor College of Medicine (Dr E. S. Friedman), and The University of Texas M. D. Anderson Cancer Center (Drs Hymes a...
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ژورنال
عنوان ژورنال: Materials Today: Proceedings
سال: 2020
ISSN: 2214-7853
DOI: 10.1016/j.matpr.2019.08.090