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"The delegate of the United States, referring to his request that the frequency 2450 Mc/s be allocated for I.S.M., indicated that there was in existence in the United States, and working on this frequency a diathermy machine and an electronic cooker, and that the latter might eventually be installed in transatlantic ships and airplanes.
Diathermy is produced by two techniques: short-wave radio frequencies in the range 1–100 MHz (shortwave diathermy) or microwaves typically in the 915 MHz or 2.45 GHz bands (microwave diathermy), the methods differing mainly in their penetration capability. [4] [5] [6] It exerts physical effects and elicits a spectrum of physiological responses.
Enfant Philippines Consumer goods Apparel retailers Manila: 1995 Baby goods and apparel P A ePLDT Ventus: Industrials Business support services Makati: 2001 Contact centers P A Fil-Asian Airways: Consumer services Airlines Cebu: 2011 Airline, defunct 2014 P D Filinvest: Conglomerates - Taguig: 1955 Real estate, hotels, tourism, banking P A
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These were limited to frequencies of 0.1 – 2 MHz, called "longwave" diathermy. The current was applied directly to the body with contact electrodes, which could cause skin burns. In the 1920s the development of vacuum tube machines allowed frequencies to be increased to 10 – 300 MHz, called "shortwave" diathermy. The energy was applied to ...
The FCC has restricted the frequencies allowed for medical treatment, and most machines in the US use 27.12 MHz. [26] Shortwave diathermy can be applied in either continuous or pulsed mode. The latter came to prominence because the continuous mode produced too much heating too rapidly, making patients uncomfortable.
Philippines: Riverine assault boat: 9-meter FRP: 20: Used by Special Forces Regiment. [97] Made with fibreglass by Filipinas Fabricators - Colorado Shipyards, delivered starting 2009. Around 9 meters long, armed with either a 50-caliber or 7.62mm machine gun. Condor Scout Boats Philippines: Riverine squad assault boat: Standard: 35
The Philippine Aerospace Development Corporation (PADC) is a state-owned aerospace and defense technological development corporation integrated to the Department of National Defense through Executive Order No. 78, s. 2019. [1]