CAJ | 학술논문

目的探讨超短波电场对金属周围升温变化的影响因素.方法采用医用超短波治疗仪1档,调谐,输出80 mA,取0.2 ml水作为载体,金属物一端深入水中,改变金属物长度、金属物与电极板间垂直距离、金属物在电磁场中的摆放位置以及超短波的作用时间,采用数字电偶温度表测量不同治疗条件前、后水温的变化.结果相同条件下,金属线长轴平行于电极板,金属物场外实际长度为10 cm、20 cm、30 cm、50 cm、70 cm、90 cm时,其周围升温分别为4.37℃、8.30℃、18.00℃、20.64℃、32.92℃、38.96℃;金属物长轴平行于电极板,金属线与一侧电极板间垂直间距分别为1.5 cm、3.0 cm、4.5 cm、6.0 cm时,金属周围升温分别为66.03℃、49.37℃、14.80℃、0.87℃;如果金属物长轴垂直于电极板,金属一端与极板间距离为5 cm、9 cm、15 cm时,金属周围升温分别为56.10℃、26.64℃、11.07℃;金属与电场边缘的垂直间距为0 cm、5 cm、10 cm、15 cm时,金属周围升温分别为25.32℃、10.26℃、2.88℃、1.53℃;固定长度的金属物,涵盖入电场内的实际长度分别为20 cm、10 cm、0 cm时,金属周围升温分别为2.84℃、4.04℃、7.30℃;同等条件下,改变超短波作用时间为5 min、10 min时,金属周围升温分别为24.90℃、39.07℃.结论当金属物长轴平行置于电极板正中间位置,且金属完全置于电场内并远离极板边缘时,通过减短金属物的长度、两极板间的距离以及超短波的作用时间,可降低金属物周围的升温幅度.
목적 탐토초단파전장대금속주위승온변화적영향인소.방법 채용의용초단파치료의1당,조해,수출80 mA,취0.2 ml수작위재체,금속물일단심입수중,개변금속물장도、금속물여전겁판간수직거리、금속물재전자장중적파방위치이급초단파적작용시간,채용수자전우온도표측량불동치료조건전、후수온적변화.결과 상동조건하,금속선장축평행우전겁판,금속물장외실제장도위10 cm、20 cm、30 cm、50 cm、70 cm、90 cm시,기주위승온분별위4.37℃、8.30℃、18.00℃、20.64℃、32.92℃、38.96℃;금속물장축평행우전겁판,금속선여일측전겁판간수직간거분별위1.5 cm、3.0 cm、4.5 cm、6.0 cm시,금속주위승온분별위66.03℃、49.37℃、14.80℃、0.87℃;여과금속물장축수직우전겁판,금속일단여겁판간거리위5 cm、9 cm、15 cm시,금속주위승온분별위56.10℃、26.64℃、11.07℃;금속여전장변연적수직간거위0 cm、5 cm、10 cm、15 cm시,금속주위승온분별위25.32℃、10.26℃、2.88℃、1.53℃;고정장도적금속물,함개입전장내적실제장도분별위20 cm、10 cm、0 cm시,금속주위승온분별위2.84℃、4.04℃、7.30℃;동등조건하,개변초단파작용시간위5 min、10 min시,금속주위승온분별위24.90℃、39.07℃.결론 당금속물장축평행치우전겁판정중간위치,차금속완전치우전장내병원리겁판변연시,통과감단금속물적장도、량겁판간적거리이급초단파적작용시간,가강저금속물주위적승온폭도.
Objective To study the temperature changes around metal in ultrashort wave electric-field and it's influence factors.Methods Medical ultrashort wave therapeutic instrument was used and output switen was set at the 1 st grade.After tuning, one end of metal object was placed into 0.2ml water contained in a plastic tube ( with a length of 2cm and diameter of 2mm).Temperature changes of water around metal in different conditions were measured by digital thermometer.In experiments, several different conditions were studied, such as the length of metal, the vertical distance between metal and electrodes, the location of metal ultrashort electric field and the action duration of ultrashort wave.Results Under the same condition, when the prolate axis of metal paralleled to electrodes and the real lengths of metal outside of electric field were 10cm, 20cm, 30cm, 50cm, 70cm, 90cm, water temperatures around metal rose 4.37, 8.30,18.00, 20.64, 32.92 and 38.96℃, respectively; when the prolate axis of metal paralleled to electrodes and the verticaldistances between metal and one electrode were 1.5, 3.0, 4.5 and 6.Ocm, water temperatures around metal rose 66.03,49.37, 14.80 and 0.87℃, respectively; when the prolate axis of metal was vertical to electrodes and the distanees between one end of metal and electrodes were 5, 9 and 15cm, water temperature around metal rose 56.10,26.64 and11.07℃, respectively; when the vertical distances between metal and the electrode edge were 0,5,10,15cm, water temperatures around metal rose 25.32 , 10.26 ,2.88 and 1.53℃, respectively;when the lengths of metal with a fixed-length,the included real length in electric field, were 20, 10 and 0cm, water temperatures around metal rose 2.84 , 4.04 and7.30℃ , respectively.Under the same condition, the action duration of ultrashort wave were changed to be 5 and 10min,water temperatures around metal rose 24.90 and 39.07℃, respectively.Conclusion This study show that the water temperature rising around metal will be relatively small when:( 1 ) the real length of metal is short ; ( 2 ) the prolate axis of metal parallels to electrodes and is placed in the middle area between two electrodes;(3)the distance between two electrodes increase and the action duration is short;(4)the overall length of metal is contained in electric field between electrodes,or the metal is kept away from electrodes edges.