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체지방 측정기(Futrex-1000 body fat tester)로 측정한 소아의 체지방율에 관한 연구 : 학동기와 청소년기 아동을 대상으로
박상철,이동환,신상만,이상주,박준수,최석민,안재억 순천향대학교 1992 논문집 Vol.15 No.2
Using the infrared interactance(NIR method), the percentage body fat in 1,401 Korean children, aged 6-18years, was evaluated for normal and standard values. Correlation of percentage of body fat with age, weight, height, overweight(%), Kaup index and Rohrer index was also analyzed. The following results were obtained ; 1) In all the subject, weight and height showed standard growth(50-90 percentile) compared to growth data of korean children. 2) The percentage of body fat was decreased with increasing age and was measured higher in female than male. 3) The percentage of body fat was decreased with increasing height in both sex. 4) The percentage of body fat correlated negatively with age, heght, weight in both sex. In boys, the Rohrer index appeared to have a significant positive correlation with the percentage of body fat. (r=0.52454) In girls, the overweight(%) appeared to have a significant positive correlation with percentage of body fat. (r=0.56994) The Kaup index had no correlation with the percentage of body fat. This NIR method is safe, non-invasive, rapid, easy to use, and may be useful predict percentage of body fat, especially in the mass screening.
신생아에서 자세 및 경사도에 따른 경피적 산소와 이산화탄소의 분압 및 경피적 산소 포화도의 변화에 대한 연구
이상주,이동환,박준수,박상철,안재억 순천향대학교 1992 논문집 Vol.15 No.2
To determine the optimal positino for the newborn, tcp02, tcpc02 and Sp02 were monitored, in 21 healthy term infants, in 21 healthy preterm infants and in those infants with respiratory disease using the Radiometer(Cophenhagen) TCM2 TC oxygen monitor, ECM 20 TC carbon dixide monitor and PULSOX-7(Minolta) oxygen saturation monitor in both supine and prone position. Also, monitored with tilting in each position. When the healthy preterm infants were prone, tcP02 rose by a mean of 5.8mmHg(p=0.0185), an increase of 8.7%, and Sp02 was not significantly increased by a mean of 0.6%(p=0.1859). In those infants with respiratory disease, tcP02 was not significantly increased by a means of 6.9mm/Hg(p=0.1014), and Sa02 was not significantly changed. There was no change of tcPC02 in all infants. This improved oxygenation in the prone position appears to be the result of enhanced ventilation/perfusion ratios. Tilting the body in a 20head-down, or 20 head-down partially produce significant change in tcP02, or Sp02 in the newborns. These findings may have important implications in the management of preterm infants requiring neonatal intensive care and the infants with respiratry disease.
Lee, Eun-Jae,Oh, Mi-Sun,Kim, Jong S,Chang, Dae-Il,Park, Jong-Ho,Cha, Jae-Kwan,Heo, Ji Hoe,Sohn, Sung-Il,Kim, Dong-Eog,Kim, Hahn Young,Kim, Jei,Seo, Woo-Keun,Lee, Jun,Park, Sang-Won,Kim, Yun Joong,Lee, British Medical Association 2018 Journal of neurology, neurosurgery and psychiatry Vol.89 No.3
<P>Conclusion STin2 VNTR polymorphisms may be associated with poststroke neurological recovery after SSRI therapy. Further studies are needed to identify the role of serotonin in neurological recovery after stroke.</P>
이상혁(Sang-Hyeok Lee),강필순(Feel-Soon Kang),이상훈(Sang-Hun Lee),조수억(So-Eog Cho),이태원(Tae-Won Lee),박성준(Sung-Jun Park) 전력전자학회 2012 전력전자학회 논문지 Vol.17 No.2
A precise measurement of the grid voltage is one of the essential techniques, which is required to connect a renewable energy to the grid. In general, when a filter is used to eliminate unnecessary harmonics and noises, a signal is distorted by phase delay, amplitude attenuation, and other distortions. And the response characteristic of a controller is directly affected by bandwidth of cut-off frequency of the filter. To alleviate this problems, we propose an effective algorithm based on DFT(Discrete Fourier Transform) instead of approaching the filter application. The proposed algorithm ensures high precise measurement of the grid voltage because it can extract the fundamental and harmonics from the raw signal without any distortions. The high performance of the proposed algorithm is verified by PSIM simulation and experiments of Grid-Connected VSI.
한국인에서 경동맥 경화와 관상 동맥 질환의 연관 관계에 관한 연구
이상억(Sang Eog Lee),김권삼(Kwon Sam Kim),김병준(Byoung Joon Kim),이효정(Hyo Jung Lee),안우석(U Seouk Ahn),강흥선(Heung Sun Kang),조정휘(Chung Whee Choue),김명식(Myung Shick Kim),송정상(Jung Sang Song),배종화(Jong Hwa Bae) 대한내과학회 1996 대한내과학회지 Vol.51 No.6
N/A Objectives: Along with the recent change in lifestyle in Korea, the incidence of coronary artery disease(CAD) and cerebrovascular disease due to atherosclerosis has increased. B-mode ultrasound of the extracranial carotid arteries offers a valid and repeatable noninvasive method for quantifying the extent of atherosclerosis. The extent of carotid artery atherosclerosis as measured by B-mode ultrasound has been shown to be strongly and independently correlated with the presence or absence of CAD. We investigated the relation between carotid atherosclerosis and the status of CAD in Korean population with a carotid B-mode ultrasound. Methods: One hundred twenty eight patients underwent. B-mode ultrasound of the carotid arteries with 10 MHZ linear array probe. The intima-media thickness(IMT) at two sites in far(posterior) wall of the both common carotid artery and bifurcation were quantified and evaluated for the incidence of softand hard plaques. Coronary angiography was performed by the percutaneous technique using Judkins catheter. The extent of CAD was counted as 0,1,2,3-vessel disease according to the number of major coronary vessels with an obstruction of 50% or greater. Results: The number of coronary artery involved was single-vessel disease in 41, two-vessel disease in 19, three-vessel disease in 25 and no corona atherosclerotic disease in 43. The incidence of plaques was no CAD group in 10(23%) at the bifurcation, whearas CAD group in 18(23%) at the common carotid artery and 68(80%) at the bifurcation. The incidence of plaques at the bifurcation increased progressively in each of 2- and 3-vessel disease group compare with the 1-vessel disease group(89%, 100% vs 64%). The sum of IMT at both common carotid artery and bifurcation was significantly different between no CAD and CAD group(3.17±0.08mm vs 4.26±1.37mm, p<0,05), and increased progressively in each of the groups with increasing numbers of stenosed vessels(2-vessel clisease:4.98±1.28mm, 3-vessel disease: 5.29±1.20mm Conclusion: The results suggest that increased IMT of carotid arteries is closely related to status and extent of CAD Also measurement of IMT may be useful screening method for assessment of CAD and systemic atherosclerosis.
이상혁(Sang-Hyeok Lee),임상길(Sang-Gil Im),이상훈(Sang-Hun Lee),강필순(Feel-Soon Kang),조수억(Su-Eog Cho),박성준(Sung-Jun park) 전력전자학회 2011 전력전자학술대회 논문집 Vol.2011 No.7
본 논문에서는 신재생 에너지를 전력 계통에 효율적으로 연계시키기 위한 요소 기술로 Filter 대신 DFT 기법을 사용한 고정밀 계측에 대해 제안한다. 일반적으로 Filter를 사용할 경우 원신호의 위상 지연, 크기 감소 같은 신호 왜곡으로 정확한 제어가 어려우나, 제안된 DFT 기법을 사용하면 기존 문제점을 해결 가능하다. 따라서 본 논문에서 제안된 DFT 기법은 PSIM 을 이용한 시뮬레이션과 실험을 통해 제안된 알고리즘의 타당성과 우수성을 검증하였다.
Kim, Dong-Eog,Kim, Jeong-Yeon,Jeong, Sang-Wuk,Cho, Yong-Jin,Park, Jong-Moo,Lee, Ju-Hun,Kang, Dong-Wha,Yu, Kyung-Ho,Bae, Hee-Joon,Hong, Keun-Sik,Koo, Ja-Seong,Lee, Seung-Hoon,Lee, Byung-Chul,Han, Moon- American Heart Association] 2012 Stroke Vol.43 No.7
<P>Predictors of progression of intracranial atherosclerotic stenosis have not been clearly identified. We investigated whether poststroke changes in lipid profiles would affect the prognosis of symptomatic intracranial atherosclerotic stenosis.</P>
Long-Term Changes in Post-Stroke Depression, Emotional Incontinence, and Anger
Boseong Kwon,Eun-Jae Lee,박성호,Ji Sung Lee,Min Hwan Lee,Daeun Jeong,Dongwhane Lee,Hyuk Sung Kwon,Dae-Il Chang,Jong-Ho Park,Jae-Kwan Cha,허지회,Sung-Il Sohn,Dong-Eog Kim,Smi Choi-Kwon,Jong S. Kim 대한뇌졸중학회 2021 Journal of stroke Vol.23 No.2
Background and Purpose Long-term changes in post-stroke depression (PSD), post-stroke emotional incontinence (PSEI), and post-stroke anger (PSA) have rarely been studied. Methods This is a sub-study of EMOTION, a randomized, placebo-controlled trial, that examined the efficacy of escitalopram on PSD, PSEI, and PSA in patients with stroke. We interviewed patients at the long-term period (LTP) using predefined questionnaires: Montgomery-Åsberg depression rating scale (MADRS) for PSD, modified Kim’s criteria for PSEI, and Spielberger trait anger scale for PSA. Additionally, the ENRICHD Social Support Instrument (ESSI) for the social support state and the modified Rankin Scale (mRS) were measured. We investigated the changes in and factors behind PSD, PSEI, and PSA at LTP. Results A total of 222 patients were included, and the median follow-up duration was 59.5 months (interquartile range, 50 to 70). Compared to the data at 6 months post-stroke, the prevalence of PSEI (11.7% at 6 months, 6.3% at LTP; P=0.05) and mean anger score (21.62, 16.24; P<0.01) decreased, while the prevalence of PSD (35.6%, 44.6%; P=0.03) and mean MADRS (6.16, 8.67; P<0.01) increased at LTP. ESSI was associated with PSD and PSA, but not with PSEI. The effect of the baseline National Institutes of Health Stroke Scale score on PSD decreased over time. The effect of low social support on PSD was greater than that of mRS at LTP. Conclusions The prevalence and degree of PSD significantly increased, while those of PSEI and PSA decreased at LTP. PSD in this stage appeared to be more closely associated with a lack of social support than patients' physical disabilities.
Kim, Ji Yeun,Kwon, Jung Hyun,Ahn, So Hyun,Lee, Sang Il,Han, Young Shin,Choi, Young Ok,Lee, Soo Young,Ahn, Kang Mo,Ji, Geun Eog Blackwell Publishing Ltd 2010 Pediatric allergy and immunology Vol.21 No.2
<P>Kim JY, Kwon JH, Ahn SH, Lee SI, Han YS, Choi YO, Lee SY, Ahn KM, Ji GE. Effect of probiotic mix (<I>Bifidobacterium bifidum, Bifidobacterium lactis, Lactobacillus acidophilus</I>) in the primary prevention of eczema: a double-blind, randomized, placebo-controlled trial.Pediatr Allergy Immunol 2010: 21: e386–e393.© 2009 John Wiley & Sons A/S</P><P>Controversy exists regarding the preventive effect of probiotics on the development of eczema or atopic dermatitis. We investigated whether supplementation of probiotics prevents the development of eczema in infants at high risk. In a randomized, double-blind, placebo-controlled trial, 112 pregnant women with a family history of allergic diseases received a once-daily supplement, either a mixture of <I>Bifidobacterium bifidum</I> BGN4, <I>B. lactis</I> AD011, and <I>Lactobacillus acidophilus</I> AD031, or placebo, starting at 4–8 wks before delivery and continuing until 6 months after delivery. Infants were exclusively breast-fed during the first 3 months, and were subsequently fed with breastmilk or cow’s milk formula from 4 to 6 months of age. Clinical symptoms of the infants were monitored until 1 yr of age, when the total and specific IgE against common food allergens were measured. A total of 68 infants completed the study. The prevalence of eczema at 1 yr in the probiotic group was significantly lower than in the placebo group (18.2% vs. 40.0%, p = 0.048). The cumulative incidence of eczema during the first 12 months was reduced significantly in probiotic group (36.4% vs. 62.9%, p = 0.029); however, there was no difference in serum total IgE level or the sensitization against food allergens between the two groups. Prenatal and postnatal supplementation with a mixture of <I>B. bifidum</I> BGN4, <I>B. lactis</I> AD011, and <I>L. acidophilus</I> AD031 is an effective approach in preventing the development of eczema in infants at high risk of allergy during the first year of life.</P>