췌장의 Mucinous Ductal Ectasia 1예

강태우,송철수,김동헌,문상은 대한외과학회 1996 대한외과학회 학술대회 초록집 Vol.1996 No.5

고유수용성신경근촉진법 운동이 급성 목부염좌 환자의 통증과 목 장애지수 및 심부목굽힘근 지구력에 미치는 영향

강태우,정왕모,김범룡,Kang, Tae-Woo,Jeong, Wang-Mo,Kim, Beom-Ryong 대한고유수용성신경근촉진법학회 2018 PNF and Movement Vol.16 No.2

Purpose: The purpose of this study is to examine the effects of proprioceptive neuromuscular facilitation (PNF) exercises on the neck disability index and deep neck flexor endurance of acute whiplash injury patients and to provide basic data for PNF exercises for musculoskeletal system disorder patients. Methods: Twenty acute whiplash injury patients were randomly assigned to an experimental group (n=10) and were treated with PNF exercises whereas a control group (n=10) underwent general exercises. Each session lasted 15 minutes and was performed five times a week for two weeks. The degree of pain was assessed using a visual analogue scale (VAS) and the degree of neck disability was measured by the neck disability index (NDI). Craniocervical flexor endurance (CCFE) tests were conducted to measure deep neck flexor endurance. Results: In terms of the intragroup changes in VAS, NDI, and CCFE, there were significant decreases in both the experimental and the control groups. After intervention, there were significant differences between the experimental group and the control group in terms of intergroup changes in VAS, NDI and CCFE. Conclusion: Although the exercises that are generally applied to acute whiplash injury patients are effective on the whole, PNF exercises are considered to be beneficial, given the improvements in the neck disability index and deep neck flexor endurance.

4차 산업혁명 스마트 국방혁신 성과와 발전방향

강태우,하길문,김병주 한국방위산업진흥회 2020 國防과 技術 Vol.- No.502

군용항공기 국산화 개발품의 감항영향성 평가 연구

강태우 한국품질경영학회 2019 한국품질경영학회 학술대회 Vol.2019 No.-

현재 군용항공기 개발은 소수의 선진국에서만 개발 및 생산능력을 보유하여 이루어지고 있기 때문에 군용 항공기 산업을 발전시키는데 있어 범국가적인 동력사업을 육성하는데 기술적 자립은 필수부가결한 요소이다. 항공 무기체계의 동력산업을 육성하기 위해 국산화 부품 개발에 대한 관심이 계속적으로 증가하고 있으며 개발된 부품을 장착하기 위해서는 체계성능을 만족해야 할 뿐 아니라 비행 안전성도 확보하여야 한다. 본 연구에서는 군용 항공기 장착을 위해 개발하는 국산화 품목에 대해 감항성을 평가하기 위해 수행된 입증방안의 한 방법으로 고장유형 영향 및 치명도 분석(FMECA, Failure Mode Effectiveness & Criticality)을 수행하였다. 개발하는 품목은 고정익 항공기에 장착 하기 위한 동력전달축(Power take-off shaft)이며 엔진 구동부에서 나오는 동력을 발전기, 유ㆍ공압 펌프 및 공기터빈시동기가 장착되는 항공기 구동부에 전달하는 역할을 한다. 고장에 따른 임무영향 유무를 고려하여 동력전달축에서 발생 가능한 고장유형을 분류한 결과 전달기능 고장, 질량불균형 등 다섯 가지 유형을 식별하였고 고장영향, 탐지방법, 위험도 등급을 분석하였다. 고장영향확률, 고장유형비, 운용시간 등을 고려하여 고장유형별 치명도를 분석하고 치명도 등급을 분류하고 품목 치명도 값을 산출하였다. FMECA 결과로 확인된 동력전달축의 최대 치명도를 가지는 고장유형은 축정렬 불일치로 확인되었으며 고장 유형비의 값이 타 고장유형보다 상대적으로 크다는 사실을 확인할 수 있었다. FMECA를 통해 확인 된 고장유형의 원인은 생산공정을 진행함과 수락시험을 통해 예방을 할 수 있으며 주기검사를 통해 확인이 가능하기 때문에 비행안전성을 확보하는 것이 가능하리라 판단된다.

제주도 토양의 감귤나무(Citrus unshiu Marc.)에서 ^137Cs의 전이

강태우,박원표,송성준,유장걸 제주대학교 방사능이용연구소 2001 연구보고 Vol.15 No.-

본 연구는 제주도 토양 감귤나무에서 ^137Cs의 전이를 조사하기 위하여 유기물 함량이 서로 다른 제주도내 6개 지역의 감귤원에서 채취한 감귤과 토양시료를 감마분광계로 ^137Cs 농도를 측정하였고, 또한 토양화학 특성과의 관계를 조사하였다. 토양 중 ^137Cs 농도는 10.2∼40.0 Bq/kg dry 범위로, 유기물 함량이 높을수록 높은 경향을 보였다. 식물체 중 ^137Cs 농도는 가식부위의 경우는 검출하한치 이하 ∼91.8 mBq/kg·fresh, 잎은 검출하한치 이하 ∼235 mBq/kg·fresh의 범위로 가식부위, 껍질 그리고 잎 순으로 높았다. 토양에서 식물체로의 ^137Cs 전이계수는 잎, 껍질 그리고 가식부위에서 각각 2.15×10^-3∼1.25×10^-2, 7.28×10^-4∼8.13×10^-3 그리고 3.79×10^-4∼3.08×10^-3 범위로 가식부위, 껍질 그리고 잎 순으로 높았다. 토양 pH에 따른 ^137Cs의 전이계수는 서로 상관성이 없었으나, 치환성 K와 토양 유기물 함량이 높을수록 전이계수는 낮아지는 경향이 있었다. 우리 나라 국민 1인당 20 kg의 감귤을 섭취한다고 가정했을 때 이상의 결과로부터 산출된 흡수선량인 0.0048 μSv은 연간 예탁유효 선량 당량 값인 2.48 mSv에 비하여 거의 무시할 수 있는 수준이라고 생각된다. To investigate transfer of ^137Cs in the mandarin trees of Jeju Island, the fruits and leaves as well as the soil samples around each tree were collected from 6 mandarin orchards with different organic matter content. ^137Cs concentration was measured by HPGe γ-ray spectrometry, the relationship between the transfer values and the soil chemical properties was investigated. ^137Cs concentration in soil was in the range of 10.2~40.0 Bq/kg·dry and increased with increasing organic matter content. ^137Cs concentrations in each part of plant were in the range of MDA(minimum detectable activity)~46.8 mBq/kg·fresh(fruit), MDA~91.8 mBq/kg·fresh(peel) and MDA~235 mBq/kg·fresh(leaf), respectively. The distribution of ^137Cs in trees was showed as the following order; fruit<peel<leaf. Transfer factors of ^137Cs from soil to tree were in the range of 2.68×10^-3~1.02×10^-2, 9.07×10^-4~4.03×10^-3 and 4.73×10^-4 ~ 2.04×10^-3 for leaf, peel and fruit, respectively. The transfer factors were as the following order; fruit<peel<leaf. The transfer factors of ^137Cs from soil to tree were not affected by soil pH, but decreased at the high concentration of exchangeable K and organic matter.

제주지역에서 소비되는 식품 중 ^(137)Cs과 ^(40)K 방사능 농도

강태우,홍경애,박원표,유장걸 제주대학교 방사능이용연구소 2003 연구보고 Vol.17 No.-

본 연구는 제주지역에서 소비되는 식품류 중의 ^(137)Cs과 ^(40)K 방사능 농도를 조사하여, 식품 섭취에 따른 ^(137)Cs과 ^(40)K에 의한 내부피폭선량의 값을 평가함으로써 만일의 원자력사고로 인한 방사능 오염에 대처할 수 있는 기초 자료를 확보하고자 수행하였다. 시료로 채취한 식품류는 농산물 31, 축산물 6, 수산물 12, 임산물 4, 가공식품(차류) 3종류였고 방사능 분석은 고순도 게르마늄검출기가 장착된 감마선분광계로 수행하였다. 시료 중 ^(137)Cs 방사능 농도범위는 농산물이 MDA이하~650 mBq/㎏·fresh, 축산물은 16.6~542 Bq/㎏·fresh, 임산물 MDA이하~131 mBq/㎏·fresh, 수산물 39.1~294 Bq/㎏·fresh, 그리고 가공식품은 MDA이하~834 mBq/㎏·fresh이었다. ^(40)K의 경우는 농산물85.5~l16 Bq/㎏·fresh, 축산물 MDA이하~246 mBq/㎏·fresh, 임산물 50.1~657 mBq/㎏·fresh, 수산물 32.0~483 mBq/㎏·fresh 그리고 가공식품 33.6~l,065 Bq/㎏·fresh 범위였다. 시료 중 ^(137)Cs 방사능 농도가 가장 높은 것은 표고버섯으로 834 mBq/㎏·fresh이었으며, ^(40)K은 커피가 1.065 mBq/㎏·fresh로 가장 높았다. 각 식품류 중 ^(137)Cs와 ^(40)K에 의한 연간 유효선량은 농산물이 66.543 nSv로 가장 높았고, 축산물 19,311, 가공식품(차류) 6.648, 수산물 6,579, 임산물 850 순으로 낮았으며 이것을 모두 합한 총 연간 유효선량 값은 99,941 nSv이었다. 본 연구에 포함된 식품의 1인당 연간 섭취량이 연간 식품 총 섭취량의 60%임을 감안해도 자연환경 중에서 이루어지는 외부피폭에 의한 연간 유효선량 2,400,000 nSv에 비하면 무시할 정도로 평상시 식품섭취에 의한 방사선 내부피폭은 매우 미량이었다. 이상의 자료는 유사시 방사선에 의한 식품류 오염정도를 식별하는데 필수불가결할 것으로 사료된다. This work was conducted to provide the reference data of radioactivity in the foodstuffs at a radiological emergency situation in Jeju Island. The foodstuffs sampled were agricultural(31), livestock(6), marine(12) and forest products(4), and processed foods(3) consumed by Jeju Islanders. ^(137)Cs and ^(40)K activities were determined by HPGe γ-ray spectrometry. The activity ranges of ^(137)Cs were <MDA(less than minimum detectable activity)∼650 m㏃/㎏·fresh in the agricultural products, <MDA∼131 m㏃/㎏·fresh in the livestock, <MDA∼834 m㏃/㎏·fresh in the marine, <MDA∼246 m㏃/㎏·fresh in the forest and 32.0∼483 m㏃/㎏·fresh in the processed foods(tea). In case of ^(40)K, the activity ranges were 16.6∼542 ㏃/㎏·fresh in the agricultural products, 39.1∼294 ㏃/㎏·fresh in the livestock, 85.5∼116 ㏃/㎏·fresh in the marine, 50.1∼657 ㏃/㎏·fresh in the forest, and 33.6∼1,065 ㏃/㎏·fresh in the processed foods(tea). The highest activity of ^(137)Cs, 834 m㏃/㎏·fresh in was observed in oak mushroom and ^(40)K, 1,065 ㏃/㎏·fresh in coffee. Annual effective doses of ^(137)Cs and ^(40)K by intake of foodstuffs per capita were the following order ; agricultural products (66,543 n㏜) > livestock products (19,311 n㏜) > processed foods (6,648 n㏜) > marine products (6,579 n㏜) > forest products (860 n㏜). Therefor total annual effective dose was summed 99,941 n㏜ which is quite low level comparing to the annual effective dose byexternal exposure, 2,400,000 n㏜. The data obtained in this study can be useful for monitoring whether the foodstuffs are contaminated or not at an emergency radiation accident, and showed that the foodstuffs consumed in Jeju are safe in terms of annual effective dose of ^(137)Cs and ^(40)K.

The Effects of Scapular Stabilization Training using the Different Exercise Prop for Impingement Syndrome of Factory Workers

강태우,홍성균 물리치료재활과학회 2022 Physical therapy rehabilitation science Vol.11 No.4

Objective: The purpose of this studyaimed to investigate the effects of scapular stabilization training using the different exercise prop for impingement syndrome of factory workers. Design: A randomized controlled trialMethods: Twenty shoulder impingement syndrome subjects were randomly divided into two groups of ten subjects each. Inclusion criteria was presence of positive sign in at least two of Neer test, Hawkins test, Yocum test, Jobe test and Speeds test. Andexclusion criteria, those with surgical history of rotator cuff, those with disease in upper limb other than shoulder impingement syndrome, those who took anti-inflammatory drugs over the past 12 months were excluded from the sample. One group was performed scapula stabilization exercise using elastic bands, while dumbbell group performed the exercise using dumbbell. Both groups performed the exercise after applying the general physical therapy. After applying five days a week for a total of six weeks, range of motion of shoulder joint, muscle strength and pain and function level were evaluated. Results: After the intervention, in both groups, all dependent variables at the 6-week post-test significantly improved compared with the pre-test (p<0.05). In addition, elastic band exercise group showed a significant differences in SPADI function score and SPADI total score compared to the dumbbell group(p<0.05). Conclusions: The elastic band training may be effective methodology using low-to-moderate intensity resistance for SPADI scores.

Modal SI 기법 적용을 위한 최적 측정위치 선택

강태우,권순정,김용현,신수봉 東亞大學校 建設技術硏究所 2001 硏究論文集 Vol.25 No.2

In applying a modal system identification with a limited number of measuring degrees of freedom, the selection of optimal sensor locations (OSL) is critical for a good identification. The current research proposes a new OSL method applicable to a modal system identification (SI) and compares it with a widely used OSL method. The proposed method utilizes the sensitivity of eigenvectors with respect to the structural parameters. A simulation study for a tower structure has been carried out to demonstrate the efficiency of the proposed method. Through the simulation study, the influence of OSL on the structural parameters estimated by a S1 method are investigated.

濟州地域 土壤中 Cs-137과 K-40 방사능 함량

강태우,송성준,유장걸 제주대학교 방사능이용연구소 1999 연구보고 Vol.13 No.-

Radioactivities of Cs-137 and K-40 in Cheju soils were determined using multichannel analyzer with Ge detector. Cs-137 level in soils was 2.75 to 166 Bq/kg, Its average was 44.9 Bq/kg showing 1.83-fold higher than in mainland. There were the regional variations that Sogwipo-shi had the highest value of Cs-137 (56.1 Bq/kg) and Bukcheju-gun had the lowest one(30.8 Bq/kg). K-40 level in Cheju soils was 10.1 to 984 Bq/kg, being 2.47-fold lower than in mainland. There also were the regional variations that Cheju-shi had the highest value of K-40 (412 Bq/kg) and Namcheju-gun had the lowest one(220 Bq/kg).

PNF기법을 적용한 슬링운동이 만성요통환자의 통증과 균형능력에 미치는 영향

강태우,박영시,Kang, Tae-Woo,Park, Young-See 대한고유수용성신경근촉진법학회 2013 PNF and Movement Vol.11 No.1

Purpose : The purpose of this study was to investigate the effect of sling exercise with PNF basic procedure in patients with chronic low back pain. Methods : This study included 14 patients with chronic low back pain, who were performed sling exercise combined PNF basic procedure. The exercise program comprised 3 sessions of 30 minutes per week for 8 weeks. The VAS(Visual analogue Scale) and BBS(Berg Balance Scale) were evaluated before and after training. All data were analyzed using SPSS 12.0. Results : Significant differences were observed the chronic low back pain patient for VAS, BBS. Chronic low back pain patient improved all test. Conclusion : Sling exercise with PNF basic procedure about chronic low back pain patient is very useful and effective. It is effective in clinical practice.