A neurometabolite study of chronic daily headache in patients with systemic lupus erythematosus using magnetic resonance spectroscopy: comparison with fibromyalgia patients and healthy controls

( Chang-nam Son ),( Sang-hyon Kim ),( Hyuk Won Chang ),( Ji-min Kim ) 대한내과학회 2016 The Korean Journal of Internal Medicine Vol.31 No.6

Background/Aims: Neuropsychiatric systemic lupus erythematosus (SLE) includes a broad spectrum of neurologic and psychiatric manifestations. One of the most commonly observed neuropsychiatric symptoms is headache. However, the lack of specific clinical distinctions for headache in SLE has made it diffi cult to elucidate its pathophysiology. The aim of this study is to evaluate the neurometabolic changes using Proton Magnetic Resonance Spectroscopy (1H-MRS) in patients with SLE who suffer from chronic daily headache (CDH). Methods: SLE and fibromyalgia patients with CDH and healthy controls were recruited (n = 9, n = 5, and n = 6, respectively). 1H-MRS metabolite ratios were evaluated in bilateral basal ganglia (BG) and bilateral peritrigonal white matter (PWM). Results: 1H-MRS showed a significantly decreased N-acetylaspartate (NAA)/creatine (Cr) ratio in right BG in SLE patients with CDH compared to fibromyalgia patients with CDH and normal controls (p = 0.029 and p = 0.020, respectively). Left PWM NAA/Cr and choline/Cr ratios in SLE patients with CDH were lower than those in fibromyalgia patients with CDH (p = 0.019 and p = 0.029, respectively). Conclusions: This study suggests the possibility that CDH in patients with SLE might be associated with neuronal dysfunction and neurometabolic changes.

Factors associated with inflammatory change of epidermal cyst

( Jisang Yun ),( Kyung-nam Bae ),( Jin-hwa Son ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byungsoo Kim ),( Moon-bum Kim ),( Kihyuk Shin ) 대한피부과학회 2021 대한피부과학회 학술발표대회집 Vol.73 No.1

Background: Epidermal cysts (EC) are the most common tumors found on the skin and accompanying inflammation is also frequent. However, the predictors for inflammatory change have not been investigated yet. Objectives: This study was performed to investigate the difference between inflamed and uninflamed epidermal cysts, and to assess associated factors for inflammatory change. Methods: We analyzed the biopsy-proven 1723 epidermal cysts (515 inflamed and 1208 uninflamed) at two tertiary hospitals from 2011 to 2021. Results: The proportion of inflamed epidermal cysts (IEC) and uninflamed epidermal cyst (UIEC) were 29.9 % and 70.1 %, respectively. Inflammatory change was less frequently observed on the face (25.5 %) than the other sites (32.1 %) (p=0.0046). The anatomic location with the highest rate of inflammatory change was back (40.8 %, p=0.0004). Mean duration of inflammatory change from UIEC to IEC on the face was shorter than the other sites (12.5 months vs 17.9 months, respectively, p= 0.0473). On ultrasonography, long axis of IEC (20.7mm) was generally longer than that of UIEC (15.7mm) (p=0.0218). Moreover, Inflammatory change was more frequent on the EC with punctum compared to those without punctum (35.3 % vs 30.3 %, P=0.0471). Conclusion: Based on the location, size and presence of punctum, decision on the optimal treatment strategies can be established when encountering patients with EC.

FC 2-8 : Factors associated with inflammatory change of epidermal cyst

( Jisang Yun ),( Kyung-nam Bae ),( Jin-hwa Son ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byungsoo Kim ),( Moon-bum Kim ),( Kihyuk Shin ) 대한피부과학회 2021 대한피부과학회 학술발표대회집 Vol.73 No.-

Background: Epidermal cysts (EC) are the most common tumors found on the skin and accompanying inflammation is also frequent. However, the predictors for inflammatory change have not been investigated yet. Objectives: This study was performed to investigate the difference between inflamed and uninflamed epidermal cysts, and to assess associated factors for inflammatory change. Methods: We analyzed the biopsy-proven 1723 epidermal cysts (515 inflamed and 1208 uninflamed) at two tertiary hospitals from 2011 to 2021. Results: The proportion of inflamed epidermal cysts (IEC) and uninflamed epidermal cyst (UIEC) were 29.9 % and 70.1 %, respectively. Inflammatory change was less frequently observed on the face (25.5 %) than the other sites (32.1 %) (p=0.0046). The anatomic location with the highest rate of inflammatory change was back (40.8 %, p=0.0004). Mean duration of inflammatory change from UIEC to IEC on the face was shorter than the other sites (12.5 months vs 17.9 months, respectively, p= 0.0473). On ultrasonography, long axis of IEC (20.7mm) was generally longer than that of UIEC (15.7mm) (p=0.0218). Moreover, Inflammatory change was more frequent on the EC with punctum compared to those without punctum (35.3 % vs 30.3 %, P=0.0471). Conclusion: Based on the location, size and presence of punctum, decision on the optimal treatment strategies can be established when encountering patients with EC.

전자동 자반건조기 제작에 이용할 Water Jet의 유동해석 모델

김일수,박창언,정영재,손준식,남기우 한국공작기계학회 1998 한국생산제조학회지 Vol.7 No.5

This paper concentrates on the development of a computational design program to determine nozzle size in water jet, combing the numerical optimization technique with the flow analysis code. To achieve the above objective, a two-dimensional model was developed for investigating the fluid flow in water jet and calculating the velocity and pressure distributions. The mathematical formulation as a standard R-ε model was solved employing a general thermofluid-mechanics computer program. PHOENICS code, which is based on the Semi-Implicit Method Pressure Linked Equations (SIMPLE) algorithm. The developed code was applied to water jet design to determine the nozzle size, and investigated the effect of the change of nozzle location. Calculated results showed that the flow pattern is not changed as the change of nozzle location.

스마트팜 환경 관리를 위한 계측 시스템

이동형(Dong-Hyung Lee),백창대(Chang-Dae Back),윤현성(Hyeon-Seong Yun),손형민(Hyeong-Min Son),차현석(Hyun-Seok Cha),김남호(Nam-Ho Kim) 한국정보통신학회 2021 한국정보통신학회 종합학술대회 논문집 Vol.25 No.2

정보통신기술이 점차 발전함에 따라 기존의 생산 시스템에 네트워크 및 컴퓨팅 기술을 적용하여 효율적인 생산 환경을 유지하는 연구가 많이 진행되고 있다. 고전적인 제어 시스템과 달리 이러한 스마트 생산 시스템은 생산 환경에 대한 데이터를 실시간으로 수집하여 통계화하고, 그 변화에 따라 유동적으로 작동할 필요가 있다. 본 논문에서는 네트워크 기반의 센서를 통해 실시간으로 데이터를 수집하고, 환경 변화에 효과적으로 대응할 수 있는 계측 시스템을 제시한다. 또한 이를 스마트팜에 적용하여 외부의 환경 변화에 대처하고 효과적인 생산 환경을 유지할 수 있음을 확인하였다. As information and communication technologies develop, many studies are being conducted to maintain an efficient production environment by applying network and computing technologies to existing production systems. Unlike classical control systems, these smart production systems need to collect data about the production environment in real time, and operate fluidly as it changes. In this paper, we present a measurement system that can collect data in real time through network-based sensors and respond effectively to environmental changes. We also proved this smart system can cope with external environmental changes and maintain an effective production environment.

사회체육과 학생의 자원봉사와 자아존중감이 욕구수준에 미치는 영향

한권상,손창남,임상호 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.2

The purpose of this study was for investigating the relation between level of need and volunteer activity, self-esteem. The participants are students who are major in sport and leisure. The multiple regression was used for this study and the level of need explained by sex, volunteer experience and self-esteem. In the result of analysis, only stabilization need with sex is statistical significant. Then there are statistical significant in accomplishment need for volunteer experience and level of self-esteem. Using the MANOVA, the results are as following. There are significant differences in levels of need that according to sex, sources and self-esteem. And there is interaction effect in sex*self-esteem only for accomplishment need.

위암세포주에서 Recombinant Human Interferon-r와 Adriamycin의 투여순서가 항암효과에 미치는 영향

홍원선,손영숙,김창민,강윤구,이춘택,김유철,임영혁,남현석,이진오,강태웅 大韓免疫學會 1993 大韓免疫學會誌 Vol.15 No.-

Numerous previous studies, both in vitro and in vivo, have demonstrated that the cytotoxicity can be enhanced by the combination of chemotherapeutic agent and interferons(IFNs) in various types of cancer cells. We have previously reported that combined treatment of MKN-45, human gastric adenocarcinoma cells, with adriamycin(ADM) and recombinant human interferon-r(rh-IFN-r) increased in the cytotoxicity. In this study, the effects of combination timing of rh-IFN-r and ADM on the cytotoxicity against MKN-45 were investigated using MTT assay. MKN-45 was treated with rh-IFN-r and ADM in vitro on three schedules : Treat A ; rh-IFN-r and ADM were treated simultaneously, Treat B ; rh-IFN-r was treated 24 hours after the treatment with ADM, Treat C ; rh-IFN-r was treated for 72 hours and followed by the treatment with ADM. The survival of MKN -45 was inhibited by ADM dose-dependently. 102 and 103U/ml of rh-IFN-r significantly inhibited the survival of MKN-45(% survival : 35.1 ±-1.2% and 34.4 ±1.1% in Treat A and 42.5 ± 2.1% and 45.9-±2.5% in Treat C, respectively). However no difference in the survival was observed between 102 and 103U/ml of rh-IFN-r. Combined treatment with rh-IFN-r and ADM significantly augmented the cytotoxicity at low concentrations of ADM. Combined effects of rh-IFN-r and ADM were evaluated using IC30(,ag/ml) to ADM. IC30s of MKN-45 in Treat A, B and C at 102 U/ml of rh -IFN-r _ were 0.019 -?- 0.003, 0.045 :I:0.001 and 0.054 ± 0.012, respectively, while IC30 of MKN-45 treated with ADM alone was 0.052±0.004. IC30s of MKN-45 in ADM alone group, Treat A, Treat B and Treat C at 103U/ml of rh-IFN-r were 0.047 ±0.003, 0.004 -±0.001, 0.031 ±0.004 and 0.056 0.008, respectively. These results indicate IC30s of Treat A and B were significantly lower than those of ADM alone(p<0.05) and IC30s of Treat A was significantly lower than those of Treat B(p <0.01). IC30s of Treat C, however, were not different from those of ADM alone. From these results demonstrating that cytotoxic effects were increased by the combination of rh-IFN-r and ADM in the order, Treat A > Treat B> Treat C, it can be concluded that the simultaneous administration of rh-IFN-r and ADM may be the most effective method to combine these two therapeutic modalties.

태권도 선수들의 운동 만족이 정신건강 및 생활 만족에 미치는 영향

한권상,손창남,임상호,류경희,장지현,김태우 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4

The purpose of this study is to determine how a Taekwondo player's athletic satisfaction affects his/her psychological health and overall personal happiness. A questionnaire survey was carried out on a sample group of 200 students attending colleges located in Seoul and Gyeonggi Province. Then, 23 questionaries deemed not trustworthy were eliminated, leaving 178 questionaries for analysis. The questionnaire, which contained total 128 questions, showed the confidence level falling between .5241 and .8945 (Cronbach's alpha). The study, which relied on frequency analysis, t-test, One-way ANOVA, and Scheffe test, produced the following results. First, athletic satisfaction showed a statistically significant difference (5% range) depending on sex, school year or athletic experience. Second, psychological health resulted in a statistically significant difference (5% range) depending on sex or athletic experience while no difference was noticed regarding school year. Third, happiness in life showed a statistically significant difference (5% range) depending on sex or school year while no difference was noticed with regard to athletic experience.

정상교하 아동의 두개안면부 성장에 관한 종적 연구

양규호,박창헌,손정수,김낙현,최남기,김선미,김기백,신혜성 大韓小兒齒科學會 2009 大韓小兒齒科學會誌 Vol.36 No.3

혼합치열기 정상교합 아동 24명(남:14명 여:10명 초진 시 평균 나이 9±1.3세, 평균 관찰 기간: 13±1.3개월)에 대한 성장량을 측정하여 기능적 교정장치의 순수 치료효과를 평가하는데 도움이 되기 위해 3회(5~8개월 간격) 촬영한 측모 두부 방사선 규격 사진에 대한 분석 결과 다음과 같은 결론을 얻었다. 1. 남아는 상악골은 전하방, 하악골은 전방성장하였고, 여아는 상하악골이 전하방 성장하였다(p<0.05). 2. 상하악골의 남녀간 차이에서 수평적 성장상태는 여아가 컸고(A point 여아: 2.39mm, 남아: 1.26mm, p<0.05), 수직적 성장상태는 유의한 차이가 없었다. 3. 상악 전치의 치축은 두개저에 대해서 순측 경사하였고(p<0.01) 하악 전치의 치축은 큰 변화가 없었다. The purpose of this study was to provide the reference data evaluating the treatment effect of orthopedic appliances. The skeletal and dental growth increments were measured in 24 normal mixed dentition children(boys: 14, girls: 10) by three serial lateral cephalograms: initial mean age: 9±1.3 years, mean observation period: 13±1.3 months, Cephalometric changes were analysed. The results were as follows: 1. In boys, the maxilla showed forward and downward growth pattern and the mandible showed forward growth pattern(p<0.05). In girls, the maxilla and mandible showed forward and downward growth pattern(p<0.05). 2. Horizontal growth of both maxilla and mandible in girls was superior to those in boys(A point: girls: 2.39mm, boys: 1.26mm, with p<0.05), whereas vertical growth of both maxilla and mandible in boys was similar to those in girls. 3. The change in tooth axis showed labioversion of upper incisor(p<0.01) and comparatively stable lower incisor position.

Acupuncture Treatment about Medial Meniscus Posterior Horn Rupture : A Case Report

Lee, Hey-Jin,Lee, Nam-Heon,Son, Chang-Gue,Cho, Jung-Hyo Research Institute of Korean Medicine 2020 혜화의학회지 Vol.29 No.2

Objectives : In this case, the knee joint inconvenience with deteriorating pain has been relieved by acupuncture treatment for a patient was 51-year-old male with a left medial meniscal posterior horn rupture in 2012. Methods : Twenty-four times of acupuncture treatments were performed for Twelve weeks from July 2016 to improve the disease. SP8(Jigi; 地機), BL63(Geummun; 金門), KI3(Taegye; 太谿), LI4(Hapgok; 合谷) were chosen for treatment by principles of Traditional Korean Medicine. Results : Numeric Rating Scales, which means subjective pain, decreased from 6 points to 3 points out of 10 points in total. Pressure Pain Threshold, which means sensitivity to pressure applied to the affected area, increased from 21N to 47N on the lateral-inferior side and from 19N to 50N on the lateral side. K-WOMAC, which indicates discomfort of knee-related activity, was 56 points out of 96 points in total before treatment and 4 points after treatment, 13 points after two years, and 15 points after four years. However, MRI tests conducted before and after treatment did not identify any significant changes. As a result, we confirmed that a total of 24 acupuncture treatments had resulted in the relief objective and subjective pain and functional recovery, especially in the case of the knee function, maintained until after four years later. There was no significant substrate recovery in meniscal rupture.