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FET 형 포도당센서의 특성개선과 이를 용한 포도당측정기 개발
이채향,최상복,이영철,서화일,손병기 ( C . H . Lee,S . B . Choi,Y . C . Lee,H . I . Seo,B . K . Sohn ) 한국센서학회 1998 센서학회지 Vol.7 No.4
A ISFET-based glucose sensor has inherent problems such as low sensitivity, drift effect and long response time. For that reason, a amperometric actuation technique was introduce to make a highly sensitivity- of the ISFET glucose sensor with a Pt actuator, which electrolysis HBO=, one of the by a by-products of the oxidation reaction of glucose. Moreover, a potential-step measurement method detecting response by only the electrolysis of H₂O₂ was developed for eliminating a drift problem. The operation characteristics of ISFET-based glucose sensor was improved by using the amperometric actuation and a measurement techniques. The fabricated ISFET glucose sensor is shown good operation such as characteristics(30mM PBS, about 26mV/decade) and linearity. A portable glucose meter with a highly resolution by using the fabricated ISFET-based glucose sensor with Pt actuation was developed and its characteristics investigated.
노인소비자들의 라이프스타일과 건강기능식품 관심도와의 관련 연구
김석순 ( Seok Soon Kim ),최상복 ( Sang Bok Choi ) 한국노인의료복지학회 2010 노인의료복지연구 Vol.1 No.1
I examine and analyze the aged consumer``s consuming habit, who live in Daegu and aged over 60, to indicate the government``s alternative plan between April, 2007 and June, 2007. According to results of this study, first, the equality of sexes, the active ability, positiveness, selfishness, the advocacy of media and the importance of leisure is above average; however, media influence, tendency of ostentation, artistic accomplishment is lower to aging people. Second, less educated and more female ageing people have more interest on the health food. Third, the aging society has more interest when the quality of sexes is less, the media preference is higher, effort is stronger and artistic accomplishment is less. Above all things the media exposure is most important fact to the consumer.
노인들의 라이프스타일에 따른 유료노인복지주택 이용행태에 관한 연구
우주택 ( Joo Taek Woo ),최상복 ( Sang Bok Choi ),김선희 ( Sun Hee Kim ) 한국노인의료복지학회 2010 노인의료복지연구 Vol.1 No.2
The current study was conducted to analyze the pattern of willingness to use of a paid senior residential welfare facility in elderly people aged 60 years or older who were residing in Daegu Metropolitan city. A questionnaire study was conducted during a period ranging from January to February of 2009, for which data was collected. Of 956 cases of collected data, excluding those in which there were no responses and those in which there were erroneous responses, 871 were included in a final analysis. Thus, the following results were obtained: 1) Paid Senior Residential Welfare willingness to use depending on general characteristics In elderly people, a willingness to use of Paid Senior Residential Welfare was shown to be relatively higher in male subjects, the educational level of middle school graduate, a previous work of self-employment and paid workers and a poor health status. 2) A willingness to use Paid Senior Residential Welfare depending on the lifestyle According to a willingness to use Paid Senior Residential Welfare depending on the lifestyle, the degree of a willingness to use Paid Senior Residential Welfare depending on the lifestyle was relatively higher in cases of social relationship, self-orientism, active type, data-chasing type, lesiure-chasing type and efforting type. 3) Determinant factors for a willingness to use Paid Senior Residential Welfare Determinant factors for a willingness to use Paid Senior Residential Welfare include social relationship, data-chasing and active type. In the group where there is a willingness to use Paid Senior Residential Welfare, Hit-ratio for a differentiation between the groups was 65.2%.
산소분자의 전기분해법을 도입한 ISFET 포도당센서의 회복특성 개선
이영철 ( Young Chul Lee ),최상복 ( Sang Bok Choi ) 한국센서학회 2000 센서학회지 Vol.9 No.3
N/A The sensitivity of ISFET glucose sensor is improved by employing amperometric actuation method. However, this method takes long time to recover the primary output voltage after measurement because of slow migration of the hydrogen ion between internal and external sensing membranes. Consequently, such a recovery-time delaying problem is one of obstacles to a practical use. In this paper, a new method is proposed to control the concentration of hydrogen ion in internal membrane, which applies a reduction potential to the working electrode for supplying hydroxide ion. Experimental results show that the recovery-time was reduced within 2 minute against decades minute of conventional method.
안전화 형태와 Insole 착용 유무에 따른 보행동작시 하지부위에 대한 지면반발력과 압력분포 부하
김중진 ( Jung Jin Kim ),최상복 ( Sang Bock Choi ),차상은 ( Sang Eun Cha ) 한국산업위생학회 2007 한국산업보건학회지 Vol.17 No.2
The purpose of this study was to compare the ground reaction forces and plantar pressure variables among three different safety shoes (Type 1: ergonomically designed and high quality shoes, 2: curved and cushioned safety hoes, and 3: regular safety shoes) and to find the effect of insole during walking. Ten healthy subjects were recruited for this study. The ground reaction force was measured using a 3 dimensional motion analysis system. Plantar pressures were measured Pedar Mobile foot pressure scan system. The ground reaction force variables were not significantly different among three different shoe types and insole conditions. After insertion insole, plantar pressure distributions were improved. These results suggest that the type 1 safety shoes was superior than other safety shoes in the statistics, and applying insole could be a possible method to prevent fatigue of lower extremity and musculoskeletal disorders. Further studies are needed to find the effect of ergonomically designed safety shoes design and insole on practical value prevention of musculoskeletal disorder, fatigue and satisfaction of workers.