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온라인 전기 자동차를 위한 비접촉 유도 전력 전달 시스템
정구호(Gu-Ho Jung),이경훈(Kyung-Hun Lee),김형국(Hyung-Guk Kim),조양진(Yang-Jin Cho),송보윤(Bo-Yun Song),손영동(Young-Dong Son),박은하(Eun-Ha Park),최주영(Ju-Young Choi),공병오(Byung-O Kong),허진(Jin Huh),손호섭(Ho-Sub Son),조정구(Jung- 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
온라인 전기자동차는 도로에 매설된 급전선로로부터 유도자계를 통하여 비접촉 방식으로 전기를 집전 받아 정차 및 주행 중에 충전하는 자동차이다. 이러한 비접촉 충전을 위해서는 도로에 매설된 급전 시스템과 차량 하부에 장착된 집전 시스템으로 구성된 비접촉 유도전력 전달(IPT, Inductive Power Transfer) 시스템이 필요하며, 급전 시스템은 다시 급전 인버터와 급전선로로, 집전 시스템은 집전 모듈(pick-up)과 집전 레귤레이터로 구성된다. 본 논문에서는 이러한 비접촉 IPT 시스템 각각의 장치를 소개하며, 더불어 구축된 시스템의 성능에 대해서도 소개한다.
제2형 당뇨병 환자에서 심혈관계 자율신경병증의 진단에 있어 Colour Change Plaster (NeuroCheck(R)) 검사의 유용성에 관한 연구
김현정 ( Hyun Jung Kim ),임윤혁 ( Yeun Hyuk Lim ),오효정 ( Hyo Jung Oh ),김병수 ( Byung Soo Kim ),김하영 ( Ha Young Kim ),박병현 ( Byoung Hyun Park ),조정구 ( Chung Gu Cho ) 대한내과학회 2006 대한내과학회지 Vol.71 No.2
Background: Recently, the colour change plaster (NeuroCheck(R)) has been introduced, which measures sweat production on the basis of a colour change from blue to pink. This new test was useful to detect of diabetic peripheral neuropathy. The aim of this study was to evaluate the usefulness of the colour change plaster (NeuroCheck(R)) for the diagnosis of cardiac autonomic neuropathy in type 2 diabetic patients. Methods: This study include 35 type 2 diabetic patients (10 male, 25 female) with a mean age of 55±14.9 years and a mean diabetes duration of 11.8±8.8 years. Cardiac autonomic neuropathy was diagnosed by means of Ewing`s method. Peripheral autonomic neuropathy (Sudomotor function abnormality) was assessed by means of time (more than 600 seconds) until complete colour change in the indicator test. Results: Peripheral autonomic neuropathy was diagnosed in 23 patients (65.7%). Time until starting colour change of plaster in normal and abnormal sudomotor patients were 38.3±33.7 sec and 367.1±470.3 sec (p<0.05). Time until completing colour change of plaster in normal and abnormal sudomotor patients were 372.5±198.8 sec and 1677.4±711.9 sec (p<0.05). The autonomic score of two groups were 2.4±2.3, 4.6±2.2 (p<0.05). Sudomotor abnormal group was older than normal (59.2±11.7 yrs, vs 47±17.4 yrs). Presence of retinopathy was related with sudomotor abnormality. Peripheral autonomic neuropathy was related with parasympathetic cardiac autonomic neuropathy. Sudomotor function abnormality was related with definite cardiac autonomic neuropathy, but it was not related with early cardiac autonomic neuropathy. The sensitivity, specificity, positive predictive value and negative predictive value of colour change plaster in the diagnosis of definitive cardiovascular autonomic neuropathy was 86.7%, 62.5%, 68.4% and 83.3%, respectively. Conclusions: The colour change plaster (NeuroCheck(R)) is not useful for the early diagnosis of cardiac autonomic neuropathy in type 2 diabetic neuropathy, but it may be possible for the screening test of definite cardiac autonomic neuropathy.(Korean J Med 71:166-172, 2006)
나용호(Yong Ho Nah),조정구(Jung Gu cho) 대한소화기학회 1988 대한소화기학회지 Vol.20 No.1
N/A Lsing cutaneous electrodes an electrogastrographic study was made of gastric myoelectrical activity in both the fasting and postprandial state in 24 patients with diabetes mellitus (l4 autonomic neuropathy patients) and in 12 control subjects. In 80% of the diabetic autonomic neuropathy, abnormal myoelectrical activity was found which was characterized by: (1) instability of the gastric pacemaker frequency; (2) tachygastrias; (3) the absence of the normal amplitude increase and the frequency dip in the postprandial electrogastrogram. The present study shows that abnormal gastric myoelectrical activity of diabetic autonomic neuropathy is related to parasyrnpathetic dysfunction and inappropriate sympathet.ic dominance.
정형철 ( Hyeong Cheol Cheong ),노혜정 ( Hye Jung Noh ),박병현 ( Byoung Hyun Park ),조정구 ( Chung Gu Cho ) 대한내과학회 2011 대한내과학회지 Vol.80 No.5
Subacute thyroiditis is a spontaneously resolving inflammatory disease of the tyroid gland, which is usually associated with a viral infection and genetic factors. In some cases of this disorder, thyroid autoantibodies can appear, probably due to the inflammatory release of thyroid antigens, althoughtheir pathophysiological role in the course of this disease is not yet fully understood. The occurrence of Graves` disease after subacute thyroiditis is extremely rare, and only a few cases have been reported. Here, we report a case of a middle-aged woman who developed Graves` disease after subacute thyroiditis.