منابع مشابه
Root dentine and endodontic instrumentation: cutting edge microscopic imaging.
Cutting of the dental hard tissues is an integral part of restorative dentistry. Cutting of the root dentine is also needed in preparation prior to endodontic treatment, with significant commercial investment for the development of flexible cutting instruments based around nickel titanium (NiTi) alloys. This paper describes the evolution of endodontic cutting instruments, both in materials used...
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Objective: Cardiac hypertrophy is a complex phenotype induced by a number of stimuli and may lead to cardiomyopathy and heart failure. Present knowledge suggests that cell cycle regulatory proteins take part in the development of hypertrophy. We have investigated the activation and regulation of the E2F transcription factor during the hypertrophic response. Methods: The expression and activity ...
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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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ژورنال
عنوان ژورنال: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
سال: 2021
ISSN: 1556-9845,1559-0879
DOI: 10.1177/15569845211008162