منابع مشابه
The Cutting Edge
“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 ...
متن کاملCutting-edge terahertz technology
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...
متن کاملThe Cutting Edge
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...
متن کاملThe Cutting Edge
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...
متن کاملThe cutting edge
Archaeological finds have shown that early humans performed crude operations on one another many thousands of years ago. Since then, surgery has remained one of our most important tools to deal with the consequences of disease, accidents and ageing. Yet, surgery has advanced greatly since the days when primitive humans drove stones into one another’s skulls to release demons. Both social trends...
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ژورنال
عنوان ژورنال: Journal of the Japan Society of Precision Engineering
سال: 1961
ISSN: 0374-3543
DOI: 10.2493/jjspe1933.27.414