여자 테니스 선수의 양손 백핸드 스트로크 동작시 상지의 근전도 분석

유국종,서국웅,윤양진,이훈식,정미라,서국은 한국운동역학회 2000 한국운동역학회지 Vol.9 No.2

This study analzed AEMG, muscle activity duration time, peak value and work load of six high school student players, three college student players, three business team players in order to analyze Arm's EMG when they play games with two-handed backhand stroke. The instruments of measuring EMG are muscle tester ME3000p. And measured parts of muscle are the triceps brachii, biceps brachii, brachioradialis and flexor carpi radialis of body left and right arm. The following is the result according to the analysis of raw data and statistics. 1. The AEMG of trained group was higher than the untrained. In both groups AEMG of right arm was higher than left one. And AEMG of forearm was higher than upperarm. The order of high AEMG among the trained is as followed ; right biceps brachii, left brachii, right brachioradialis. Among the untrained ; right brachioradialis, left brachioradialis, biceps brachii. 2. The muscle activity duration time of the trained group was totally shorter than the untrained. In both groups muscle activity duration time of the right arm was shorter than the left one. As to trained muscle activity duration time of upperarm is shorter than the forearm. Contrarily, as to untrained muscle activity duration time forearm is shorter than the upperarm. The order of short muscle activity duration time among the trained is as followed ; right biceps brachii, triceps brachii, left flexor carpi radialis. 3. The peak value of trained group was higher than the untrained. In body groups peak value of the right arm was higher than the left one. As to the trained the peak of the upperarm is higher than the forearm. Contrarily, as to the untrained, the peak value of the forearm was higher the upperarm. The order of high peak value among the trained is as followed ; right biceps brachii, left biceps brachii, right brachioradialis. Among the untrained, right brachioradialis, left biceps brachii, brachioradialis.

중량물 운반시 잡기유형에 따른 근전도 분석

이훈식,강영택,윤양진,정미라,유국종,서국웅,김정태 釜山大學校 附設 體育科學硏究所 1999 體育科學硏究所 論文集 Vol.15 No.-

The purpose of this study was to examine EMG changes of the body according to method the holding during carrying object. The experiments were conducted with utilizing EMG analyses for five male and five female adults as subjects. The results were as followed. 1. The higher muscle action potential of vertical holding was shown than that of right holding when carrying objects in MMH work in proportion to the weight of the object. The came from the subjects using their brachial muscles much to maintain the angles of their wrist joints and elbow joints for keeping their stable postures while walking. 2. The higher muscle action potential of right holding was shown in right and left elector-muscles of their spines(L1-L2, L4-L5) while carrying in all stages of weights except 25kg objects than that of vertical holding. These results were caused from more use of brachial muscles than elector-muscles of spines in carrying weight objects. So vertical holding is more effective in carrying weight objects at a short distance than right holding.

고식적 검사로 간외 전이를 진단하지 못한 원발성 간암 환자에서 간이식 전에 시행한 전신 FDG-PET의 역할

이원우,류진숙,양유정,김재승,여정석,문대혁,이승규 대한핵의학회 2002 핵의학 분자영상 Vol.36 No.6

목적: 원발성 간암의 치료를 위해 간이식이 시행되고 있으나, 8-54%의 환자에서는 이식 후 원격 전이로 인한 재발이 보고 되고 있다. 이 연구는 간이식 예정인 원발성 간암 환자들에서 고식적인 검사로 진단하지 못한 간의 전이 진단에 있어서 FDG-PET의 유용성을 평가하고자 시행되었다. 대상 및 방법: 2001년 8월 이후 본원에서 간이식을 계획하고 전신 FDG-PET을 시행한 환자 중, FDG-PET 검사 이전에 복부 초음파와 CT, 흉부 x선 검사와 CT, 골스캔 등의 고식적인 검사를 시행하여 전이의 증거가 없거나(n=22), 애매한 이상 소견이 있었던(n=4) 원발성 간암 환자 26명(남:여=23:3), 평균 나이 55.7세)을 조사하였다. FDG-PET에서 양성을 보인 결과는 조직 검사나 임상적인 추적 검사로 전이 여부를 확인하였다. 결과: 고식적 검사에서 애매한 이상 소견이 있었던 환자 4명 중 3명의 6개 병변이 FDG-PET에서 국소 대사 항진을 보였고, 전이로 확인되어 간이식을 시행하지 않았다. 이 중 5 병변들은 의심되지 않았던 부위에서 새로 발견된 것이었다. 다른 1명은 PET에서 음성 소견으로 간이식을 시행하였다. 고식적인 검사에서 전이를 의심할 만한 소견이 없었던 22명 중에서는 5명의 환자에서 7개의 간의 국소 대사항진 병변들이 FDG-PET에서 발견되었는데, 이들 줄 1명은 2 개의 전이 병변이 확인되어 간이식을 시행하지 않았다. 다른 4명의 환자들에서 보인 5개의 국소 대사항진 병변들은 양성병변으로 확인되었고 이 중 3명은 간이식을 시행하였다. 요약하면, FDG-PET으로 4명의 환자에서 고식적인 검사로 찾지 못하던 전이 병변을 찾아 불필요한 간이식을 피할 수 있었다. 모두 17명에서 간이식이 시행되었다. 간의 조직 검사 소견과 비교하였을 때 생존 원발성 간암을 진단하는 FDG-PET의 민감도는 55.6% (5/9)이었고, 특이도는 87.5% (7/8)이었다. 결론: FDG-PET 전신 스캔은 간이식 예정인 원발성 간암 환자들에서 이전에 시행한 고식적인 검사들로 진단하지 못한 전이 병소들을 추가로 진단하여 불필요한 간이식 수술을 줄이는데 기여할 수 있었다. Purpose: Liver transplantation (LT), one of the therapeutic options of primary liver cancer has been suffering from recurrence caused by metastasis in 8-54% of patients. This study was performed to investigate whether FDG-PET is useful for detecting hidden metastasis in LT candidates. Materials and Methods: Twenty-six patients (male:female=23:3, mean age 55.7 year) underwent FDG-PET. Their previous conventional diagnostic studies (CDS) like a abdomen US and CT, chest x-ray and CT, and bone scan were negative (n=22) or equivocal (n=4) for metastasis. Positive FDG-PET findings were confirmed by biopsy or clinical follow-up. Results: Among 4 patients with equivocal metastatic lesions on CDS, 3 had 6 hypermetabolic lesions on FDG-PET, which were confirmed as metastasis and subsequently LTs were cancelled. Of these, 5 lesions were initially negative on CDS. Remained 1 patient underwent LT with a negative FDG-PET result. Among 22 patients without metastasis on CDS, 5 had 7 hypermetabolic lesions on FDG-PET. One of these patients proved to have 2 metastatic lesions, and LT was cancelled. The other 4patients had 5 hypermetabolic lesions on FDG-PET, which were confirmed as benign lesions, and 3 patients of them underwent LT. In summary, FDG-PET was useful in avoiding 4 unwarranted LT by detecting unsuspected metastatic lesions on CDS. A total of 17 patients underwent LT. In comparison with pathology, the sensitivity and specificity of FDG-PET for detecting viable primary liver cancer were 55.6% (5/9) and 87.5% (7/8), respectively. Conclusion: FDG-PET can detect additional hidden metastasis and contribute to reducing unwarranted LT in the patients with primary liver cancer. (Korean J Nucl Med 2002;36;368-80)

전자선치료시 유효 선원 피부간 거리 결정에 관한 연구

이병구,이상록,정덕양,권영호,김유현 高麗大學校 倂設 保健大學 保健科學硏究所 2002 保健科學論集 Vol.28 No.2

Under the various clinical circumstances, there is a condition to change source to skin distance(SSD). It is possible to correct photon beam by well-known inverse square law. On the other hand, the electron beam is not exact location of source, that's why it is difficult to apply as it is. In case of electron beam, we should correct the difference of SSD by measure effective SSD . There are many ways to measure effective SSD. In this study, Faiz Khan's method was used. The measurement energy is 6,9,12,16,20 MeV and field size is set standard applicator 6×6, 10×10, 15×15, 20×20, 25x25㎠. From the bottom of the standard applicator to skin distance is set to 5㎝. So we measured dose at the gap to 0∼20㎝. According to a production company of linear accelerator, or even though same production company, the qualities of electron beam can be different. So, effective SSD can be different every several accelerator. Therefore, it is desirable to use the effective SSD measured at every electron beam energy and field size actually.

HPLC를 이용한 백삼,홍삼 및 홍삼 농죽액의 Ginsenosides 함량 분석

맹주양;이용구;이숙재;정진아;김상민;김유정;육영난 순천향대학교 기초과학연구소 2010 순천향자연과학연구 논문집 Vol.16 No.2

Commercial White ginseng(WG), Red ginseng (RG), and Red ginseng concentrate(RGC) were analyzed for ginsenosides Rg1, Rb1, and Re by HPLC. The contents of Rg1, Rb and Re were 0.25%, 0.17%, 0.13% in WG, the contents of Rg1, Rb1, and Re were 0.11%, 0.23%, 0.12% in RG, and the contents of Rg1, Rb1, and Re were 0.7%, 0.04%, 0.42% in RGC. In Rg1, the contents were decreased in the order of RGC(O.70%)>WG (0.25%)>RG(O.11%), in Rb1, RG(O.23%)>WG(O.17%)> RGC(O.04%), in Re, RGC(0.42%)>WG(0.13%)>RG(O.12%). The total content s of Rg1, Rb1, and Re were decreased in the order of RGC(1.16%)>WG(0.55%)>RG(O.46%). Overall results demonstrated that The content of Rg1 was higher than those of Rb1 and Re in WG and RGC, while the content of Rb1 was higher than those of Rg1 and Re in RG.

얇은 도핑조절 a-Si:H초격자에서 지속 광전기 전도도

康聖洙,梁承勳,李原鎭,金英鳳,孔維庠,朴相俊,崔時永 慶北大學校 1990 論文集 Vol.49 No.-

Very large PPC effect(σ_ppc/σ_A=10^5) in doping-modulated npnp a-Si: H superlattices could be obtained. B and P atoms, respectively, diffuse and so some parts compensated. Therefore, annealing activation energy of E_a=0.67eV is larger than one of reference n-type sample of E_a=0.26eV and annealing dark conductivity of σ_A=4×10^-[ohm cm]^-1 is lower than that of n-type reference sample of σ_A=2×10 exp (4)[ohm cm]^-1. From this results, very large PPC relatively have obtained. In this paper, we have observed that PPC effect depends on temperature and exposure time. On the basis of the experimental results, we discuss the existing models.

A case of multiple Spitz nevi within hyperpigmented macule

( You Jin Lee ),( Youngkyoung Lim ),( Jae Ho Lee ),( Jong Yoon Chung ),( Ji Hye Park ),( Jong Hee Lee ),( Dong Youn Lee ),( Joo Heung Lee ),( Jun Mo Yang ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1

Spitz nevus usually presents as a single, pinkish dome shaped lesion that tends to appear in children. Multiple Spitz nevi are much less frequent and can occur in disseminated or agminated form. They have been classified into 4 groups: disseminated, agminated on normal skin, agminated on a hypopigmented area, and agminated on a hyperpigmented area. Herein, we report a 2 year old girl with multiple spitz nevi within hyperpigmented macule on abdomen, pubic and perineal area.

P258 : Clinicohistopathological study of 60 cases of subungual melanoma

( You Jin Lee ),( Jun Hwan Kim ),( Jae Hyung Lee ),( Hyun Tae Shin ),( Ji Ho Park ),( Jong Hee Lee ),( Dong Youn Lee ),( Joo Heung Lee ),( Jun Mo Yang ) 대한피부과학회 2013 대한피부과학회 학술발표대회집 Vol.65 No.2

Background: Subungual melanoma(SUM) is an uncommon variant of melanoma which has poor prognosis. It is more common in Asians than in Caucasians - 2% in Western, 10% in Japan, 25% in Chinese. Objectives: To evaluate clinical and histopathological characteristic features of SUM in Korea Methods: Retrospective chart review of histologically confirmed SUM cases Results: Mean age was 59 years, sexual ratio M:F = 1: 1.2(27:34). Among 20 digits, Thumb (36%) is most frequently occurring site and Great toe(34%) follows. In Breslow depth staging, StageⅠ19%, Stage Ⅱ12%, Stage Ⅲ 6%, Stage Ⅳ 4%, Stage Ⅴ15%. AJCC staging, Stage 0 25%, Stage 1 27%, Stage 2 21%, Stage 3 5%, Stage 4 20% Conclusion: To our knowledge, it is the largest study on the clinicohistopathological feature of SUM in korea. We hope this result will be helpful in understanding SUM`s nature. Both early and late stage took higher proportion in comparison with western study. But it is unclear whether survival rate is lower than western. Further study will be needed.

FCT 3 : Two cases of adverse effects after Long pulse Nd:YAG Laser treatment

( You Jin Lee ),( Jae Ho Lee ),( Jong Yoon Chung ),( Jae Hyung Lee ),( Hae Young Park ),( Jong Hee Lee ),( Dong Yoon Lee ),( Joo Heung Lee ),( Jun Mo Yang ) 대한피부과학회 2014 대한피부과학회 학술발표대회집 Vol.66 No.1

Since 1064nm Nd:YAG laser was invented in early 2000s, it has been widely used for particular vascular lesion such as leg vein or refractory nasal telangiectasia which hardly treated with conventional laser. 1064nm is not well absorbed in hemoglobin but the absorption coefficient is 10 times higher than that of water, making it appropriate for the treatment of vascular lesion while minimizing demage to surround tissue(selective photothermolysis). With not only deep penetrating property but also less scattering and the low absorption of other molecules, it uniformly heat the vessel wall and brings effective homogenous coagulation. However due to the lower absorption coefficient, it requires use of relatively very high energy(300J/cm2 or higher) to achieve effective coagulation. Especially in small vascular lesion with a number of RBCs, one should dose up the influences and there are greater risk of unwanted collateral damage like ulcer, burn, post inflammatory hyperpigmentation. Hereby, we present two cases of complication after Nd-YAG laser treatment at local non- dermatologist clinic. Exact information of laser parameter or devices is unclear, However every clinicians should fully aware of associated complications of Nd-YAG laser before beginning treatment.

P225 : Clinicohistopathological study of pigmented contact dermatitis

( You Jin Lee ),( Jong Yoon Jung ),( Jae Hyoung Lee ),( Mi Young Jung ),( Ji Ho Park ),( Jong Hee Lee ),( Dong Yoon Lee ),( Joo Heung Lee ),( Jun Mo Yang ) 대한피부과학회 2013 대한피부과학회 학술발표대회집 Vol.65 No.2

Background: Pigmented contact dermatitis (PCD) is a non-eczematous variant of contact dermatitis, characterized clinically by reticular hyperpigmentation over face and neck, especially on lateral surfaces. If it occurs only on face, confusion with melasma or other aging pigmentary issues might happen and patients sometimes get through laser treatments for this pigmentation with a result of unsatisfaction. At a glance, clinical manifestation of PCD looks like all about cosmetic issues. However, the exact diagnosis and clearing out possible causative agents should be made before laser treatment in order to achieve successful treatment outcome Objectives: To evaluate clinical and histopathological characteristics of PCD patients Methods: Case series study with retrospective chart review was done. Each biopsy specimen(Lesion) was evaluated comparing to non-lesional specimen(normal control) Results: Mean age was 52.3yr, average onset was 19.7months. Patients reported possible causative agents as hair dyes (55%,11/20) and cosmetics (25%,5/20). 15 patients tested patch test (TRUE test)-75%(11/15) positive for fragrance mix, nickel sulphate etc. Under histopathologic review, prominent hydrophic change observed 30%(4/12) of patient Conclusion: To the best of our knowledge, this is the largest study on the clinicohistopathological features of PCD in Korea. We hope this result will be the clue for diagnosis and treatment of PCD in Korea.