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남정무,김병건,구자성,박종무,이정주,권오현,Nam, Jungmoo,Kim, Byung-Kun,Koo, Ja-Seong,Park, Jongmoo,Lee, JungJu,Kwon, Ohyun 대한임상신경생리학회 2007 Annals of Clinical Neurophysiology Vol.9 No.2
Spinocerebellar ataxia type 2 (SCA2) is characterized by progressive cerebellar ataxia and slow saccades. A 40-year-old woman presented with progressive gait disturbance and ataxia over 15 years. Neurologic examination revealed scanning speech, ataxia, and hyporeflexia. Brain CT showed diffuse atrophy of the cerebellum. Electronystagmography demonstrated slowed saccades with normal accuracy and delayed latency. The diagnosis of SCA2 was confirmed by the genetic test. Documentation of slow saccades may help differentiation among SCA subgroups.
다발성 섬유성 골이형성증 변형에 대한 나사못 맞물림 골수정을 이용한 치료
이광석,오종건,구자성,Lee, Kwang-Suk,Oh, Jong-Keon,Koo, Ja-Seong 대한근골격종양학회 1995 대한골관절종양학회지 Vol.1 No.2
The fibrous dysplasia is a progressive and disabling condition that lead to deformity, especially weight bearing bones. The morbidity that is associated with the polyostotic fibrous dysplasia is the recurrent fracture and deformity. Various methods of treatment had been failed to control this problem. We used osteotomy and reconstruction nailing for polyostotic fibrous dysplasia occured in the proximal part of right femur with varus deformity and reconstruction nailing in left femur without osteotomy, and interlocking intramedullary nailing in right tibia to prevent pathologic fracture. These methods brought a good result of bone union and full weight bearing ambulation after 1 year and 6 month follow up. We think these methods are useful methods to control refracture and deformity, so we reported this case with bibliographic reviews.
고광묵(Kwang Mook Go),구자성(Ja Seong Koo),김영일(Young Il Kim),양재헌(Jae Heon Yang) 한국약제학회 1999 Journal of Pharmaceutical Investigation Vol.29 No.4
To protect β-carotene at the stomach and to release rapidly at the intestine we prepared alginate beads containing β-carotene. β-Carotene and alginate solution was homogenized and prepared o/w emulsion was prepared. It was poured into Ca^(2+) solution through syringe needle. The gel was formed spontaneously and alginate beads containing β-carotene were prepared. β-Carotene was incorporated into the beads more than 95%. The release rate of β-carotene was dependent on the concentration of Ca^(2+), β-carotene and surfactants. However, the concentration of alginate did not affect the release rate of β-carotene. The high concentration of Ca^(2+) slowed down the release rate of β-carotene. The addition of surfactants in the β-carotene beads increased the release rate of β-carotene in the order of Tween 80 > Cremophor > Span 20. The contents of β-carotene and diameter of β-carotene beads did not change significantly at 50℃ for 20 days.
이기승(Lee Ki-Seung),백진기(Beak Jin-Gi),구자성(Koo Ja-Sung),이안호(Lee An-Ho),성택룡(Seong Taek-Ryong) 한국철도학회 2000 한국철도학회 학술발표대회논문집 Vol.- No.-
The substructure of Light Rail Transit is mainly built on elevated structure that is composed of pier, girder and bridge deck. The bridge deck mostly has been made by field formed reinforced concrete so far. The objectives of the study are to find a method for design and construction of the new bridge deck. Ⅰ-beam is fabricated to make grid and concrete is poured on it at factory. This type can be used for maintenance of duty line by advantages such as good quality control and short construction time.
골시멘트를 사용하지 않는 인공고관절 성형술에서 대퇴스템 주위의 골용해에 대한 분석 -이극성 반치환 성형술과 전치환 성형술의 비교-
박상원 ( Sang Won Park ),박종훈 ( Jong Hoon Park ),구자성 ( Ja Seong Koo ) 대한고관절학회 1996 Hip and Pelvis Vol.8 No.2
Periprosthetic osteolysis may be the most common cause of late failure after total hip arthroplasty perfomed without cement and its incidence is increasing with time. The purpose of this study was to find out the incidence and the characters of the periprosthetic osteolysis and to analyse its relation with the possible factors; age, sex, body weight, size of the acetabular cup or the femoral stem, stability of the femoral stem, and clinical score. The authors analysed twenty-one cases in eighteen patients of bipolar hemiarthroplasty and twenty-eight cases in twenty-five patients of total hip arthroplasty inserted with non-circumferential porous coated femoral stem of Harris-Galante type and femoral head of 28 millimeter diameter from Jan. 1985 to Dec. 1991. All of the patients were followed up for at least four years. The results obtained were as follows: l. Over all incidence of periprosthetic osteolysis was 38% in bipolar hemiarthroplasty and 35.7% in total hip arthroplasty. 2. The pattern of osteolysis in bipolar hemiarthroplasty was 3 focal, 4 multifocal and 1 diffuse osteolysis, and in total hip arthroplasty, 3 focal, 4 multifocal, and 3 diffuse osteolysis.