• Journal of Microbiology and Biotechnology
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• 제22권5호
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• pp.614-621
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• 2012

Silver nanoparticles production by the green chemistry approach was investigated using an isolated marine actinomycetes strain. The isolated strain was identified as Streptomyces albidoflavus based on chemotaxonomic and ribotyping properties. The strain revealed production of silver nanoparticles both extracellular and intracellularly. Surface Plasmon Resonance analysis with the function of time revealed that particle synthesis by this strain is reaction time dependent. The produced particles were spherical shaped and monodispersive in nature and showed a single surface plasmon resonance peak at 410 nm. Size distribution histograms indicated production of 10-40-nm-size nanoparticles with a mean size of 14.5 nm. FT-IR spectra of nanopartilces showed N-H, C-H, and C-N stretching vibrations, denoting the presence of amino acid/peptide compounds on the surface of silver nanoparticles produced by S. albidoflavus. Synthesized nanoparticles revealed a mean negative zeta potential and electrophoretic mobility of -8.5 mV and -0.000066 $cm^2/Vs$, respectively. The nanoparticles produced were proteinaceous compounds as capping agents with -8.5 mV zeta potential and revealed antimicrobial activity against both Gram-negative and -positive bacterial strains. Owing to their small size, these particles have greater impact on industrial application spectra.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2017년도 춘계학술대회
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• pp.478-481
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• 2017

본 논문에서는 기존의 삼각형 타입의 퍼지 스트레칭을 개선한 사다리꼴 형태의 퍼지 스트레칭 기법과 FCM 기반 양자화 기법을 적용하여 결절종을 추출하는 방법을 제안한다. 제안된 결절종 추출방법은 결절종 영역과 그 외의 영역 간의 명암 대비를 강조하기 위해 사다리꼴 형태의 퍼지 스트레칭 기법을 적용한 후에 Monotone Cubic Spline 기법을 적용하여 ROI 영역을 추출한다. 추출된 ROI 영역에 대해 FCM 기반 양자화 기법을 적용하고 양자화된 결과를 이용하여 ROI 영역을 이진화한다. 결절종이 타원 형태와 명암도가 낮은 값을 가진다는 형태학적 특징을 이용하기 위해서 이진화 ROI 영역에 팽창 기법을 적용하여 결절종의 후보 영역을 추출하고 8방향 윤곽선 추적 알고리즘을 적용하여 잡음 영역이 제거한다. 잡음이 제거된 결절종 후보 영역에서 최종 결절종 영역을 추출하기 위해 라벨링 기법을 적용한다. 제안된 결절종 추출 방법의 성능을 분석하기 위해서 20명의 환자를 대상으로 20장을 실험한 결과, 기존의 방법보다 TPR(Ture Positive Rate)이 높게 나타나는 것을 확인하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2017년도 추계학술대회
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• pp.68-70
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• 2017

본 논문에서는 결절종을 추출하는 과정에서 비선형 퍼지 스트레칭 기법과 FCM 기반 양자화 기법을 적용하여 결절종을 추출하는 방법을 제안한다. 제안된 결절종 추출 방법은 비선형 형태의 퍼지 스트레칭 기법을 적용하여 명암 대비를 강조한 ROI 영역에 Monotone Cubic Spline기법과 FCM 기반 양자화 기법을 적용하여 Monotone Cubic Spline기법이 적용된 상단 부분을 분리한다. 분리된 상단 영역들에서 결절종이 명암도가 낮고 타원 형태를 가진다는 형태학적 특징을 이용하기 위해서 침식 기법을 적용하여 결절종의 후보 영역을 추출하고 8 방향 윤곽선 추적 알고리즘을 적용하여 잡음 영역을 제거한다. 잡음이 제거된 결절종 후보 영역에서 최종 결절종 영역을 추출하기 위해 라벨링 기법을 적용한다. 제안된 결절종 추출 방법의 성능을 분석하기 위해서 필립스 초음파 장비를 이용하여 20명 환자에서 획득한 20장의 영상을 대상으로 실험한 결과 기존의 방법보다 TPR(Ture Positive Rate)이 높게 나타나는 것을 확인하였다.

• PNF and Movement
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• 제18권1호
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• pp.117-126
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• 2020

Purpose: The purpose of this study was to investigate the effects of extracorporeal shock-wave therapy (ESWT) on pain, grip strength, and upper-extremity function in patients diagnosed with lateral epicondylitis and to provide an effective intervention method for lateral epicondylitis. Methods: Twenty patients with lateral epicondylitis were randomly assigned to the ESWT group (n = 10) and the stretching exercise group (n = 10). Interventions in both groups were performed six times twice a week for three weeks. The visible analog scale (VAS) was used to measure pain change. A dynamometer was used to measure grip strength (GS). Patient-rated tennis elbow evaluation (PRTEE) was used to measure the upper-extremity function. Results: There were significant differences in pain, grip strength, and upper-extremity function in both groups before and after intervention (p < 0.05). There were also significant differences in pain, grip strength, and upper-extremity function between the groups after intervention (p < 0.05). Conclusion: This study showed very positive improvement in pain, grip strength, and upper-extremity function after ESWT in patients with lateral epicondylitis. Therefore, ESWT can be recommended for patients with lateral epicondylitis.

• Physical Therapy Rehabilitation Science
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• 제10권2호
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• pp.134-140
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• 2021

Objective: The purpose of this study was to investigate the alteration of upper cervical manipulation to autonomic nervous system (ANS) through the heart rate variability(HRV) analysis in young healthy individuals. Design: Two-group pretest-posttest design. Methods: Thirty four young healthy participants (17 males and 17 females) were randomized into the 2 groups, such as the upper cervical manipulation group (UCM group, n=17), neck stretching group (NS group, n=17). UCM group received a upper cervical manipulation, especially on the atlas, and NS group did stretch for both side of upper trapezius and levator scapular. For the UCM, Atlas mobility was checked by therapist and thrust was given once at the posterior arch of Atlas. HRV was measured before and after intervention to investigate ANS alteration. After the intervention, both groups were given 3 minutes break-time before measuring HRV. Results: The UCM group showed significant differences in ANS Activity, Stress Resistance, Stress index and Fatigue Index (p<0.05) while no differences in NS group with before and after intervention. There were significant differences in ANS Activity, Stress Resistance, and Fatigue Index between groups (p<0.05). Conclusions: This study suggected that upper cervical manipulationhas positive effects on the ANS activity, stress resistance, and fatigue index.

• The Journal of Asian Finance, Economics and Business
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• 제9권6호
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• pp.389-402
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• 2022

The purpose of the study is to analyze the significant impacts of expectations, performance, complaints, and fairness that affect consumer satisfaction. The methodology involves reviewing and referencing relevant literature carefully, then proposing a model for customer satisfaction. This study is empirically based on a survey with 50 respondents who work in the field of import and export in the region stretching from the north to the south of Vietnam. The sampling method used in this study is the in-depth interview method. The results show that: (1) expectation has a specific impact on customer satisfaction, (2) performance has a positive impact on customer satisfaction, and (3) complaint which is an intermediary factor between expectation, performance, and fairness has an impact on satisfaction, (4) fairness has a positive effect on satisfaction, in addition, fairness is an extremely important feature when customers choose an import-export service. Research implies that increasing expectations, performance, and fairness results in an improved customer experience and satisfaction when they use the service. It is suggested that the complaint factor continue to be studied and looked into because it still has some effect on satisfaction and is an intermediate variable that changes how the other factors relate to each other.

• 한국산학기술학회논문지
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• 제13권3호
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• pp.1212-1219
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• 2012

본 연구는 만성 뇌졸중 환자를 대상으로 하여 체간 안정화운동과 체간 저항운동이 균형능력 향상에 어떠한 영향을 주는지 알아보고자 한다. 이 연구의 대상자는 만성 뇌졸중 환자 30명(남: 15, 여: 15)를 무작위로 배분하여 주3회 12주 동안 실시하였다. 균형증진 운동은 선행 연구를 참조하여 수정 보완한 것으로 6가지의 운동으로 구성하였다. 대상자들의 균형능력의 측정은 기능적 기립 균형 검사, 기능적 전방 팔 뻗기 검사, 실행능력 지향형 운동성 평가, 버그균형척도를 이용하였다. 기능적 기립 균형검사와 실행능력 지향형 운동성 평가에서는 체간 저항 운동군과 체간 안정화운동군 두 군에서 향상되었다. 기능적 전방 팔 뻗기 검사에서는 체간 안정화 운동군에서 조금 더 유의하게 향상되었다. 따라서, 체간 저항 운동도 만성 뇌졸중 환자의 균형능력 향상을 시키지만 체간 안정화운동이 균형 능력 향상에 더 효과적인 것으로 나타났다.

• 대한정형외과스포츠의학회지
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• 제4권1호
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• pp.36-42
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• 2005

목적: 야구 선수에서 발생한 견관절 내부 후방 충돌에 대해 관절경 소견 및 치료 결과를 알아보고자 하였다. 대상 및 방법: 내부 후방 충돌로 진단하였던 5예를 대상으로 평균 15개월 추시하였다. 전 예에서 후기 거상기에 견관절 후방에 동통을 호소하였고, 외전 $120^{\circ}$에서 과수평-외전을 추가한 재위 검사상 전 예에서 양성을 보였다. 관절경하에 파열된 후방 관절와 순이나 SLAP 병변은 봉합하였고 회전근 개는 변연 절제하였으며 전방 관절낭 인대는 3예에서 관절낭 중첩술, 2예에서 관절낭 열 수축술을 시행하였다. 결과는 동통, 운동 범위, 운동 복귀 수준 등을 조사하였다. 결과: 관절경 소견상 전 예에서 후상방 관절와 순의 fraying이 있었고 2예에서는 후상방 관절와 순의 flap 파열, 1예에서는 제2형 SLAP 병변이 동반되었다. 전 예에서 극상근 건에 fraying이 관찰되었고 1예에서는 부분 파열을 보였다. 또한 전 예에서 $90^{\circ}{\sim}120^{\circ}$ 외전 및 외회전 상태에서 관절와 순에 회전근 개가 충돌하는 현상을 관찰할 수 있었다. 결과는 투구 시 전 예에서 동통이나 불안감은 없었으며, 평균 활동력은 이환 전의 활동력에 비해 평균 88% ($80{\sim}100%$)로 회복되었다. 결론: 내부 후방 충돌의 확진은 관절경 검사를 통해 가능할 것으로 사료되었으며, 내부 충돌의 원인이 되는 전방 미세 불안정성과 후방 관절낭 구축에 대해 전방 관절낭 중첩술이나 수축술 및 후방 관절낭 신연 운동은 비교적 만족스러운 결과를 보였다.

• 성인간호학회지
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• 제21권5호
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• pp.458-467
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• 2009

Purpose: This study was object to the effects of a resistance exercise combined with relaxation therapy on blood pressure, frequency of exercise and physical fitness in elderly women. Methods: Seventy three elderly women participated in an exercise program for 12 months. The exercise program consisted of stretching, massage and resistance training using thera-bands twice a week and 50 minutes in every sessions each week. Repeated measures ANOVA were performed using SAS. Results: After the exercise program there was a significant difference in systolic blood pressure, frequency of exercise, body fat, sitting to standing, walking 2 minutes, sitting on a chair and reaching, and standing on one leg with eyes opened. After 6 months, there was a significant decrease in systolic blood pressure and significant increase in frequency of exercise, body fat, sitting to standing and standing on one leg with eyes opened. In 12 months, there was a significant increase in body fat, 2 minutes walking, and sitting in a chair and reaching. Conclusion: Resistance exercise combined with muscle relaxation therapy would have a positive effect on elderly women. We found that it was helpful for the elderly women in terms of physical fitness.

• 한국의류산업학회지
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• 제15권1호
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• pp.116-129
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• 2013

This research analyzes the status of clothes purchase and the size fit of the clothes for kindergarten children in the Daegu city area. The total of 344 questionnaires were analyzed. The summary and the conclusion are as follows: First, the frequency of accompanying children when purchasing appeared mostly 'sometimes accompany'. Second, the parents appeared 'sometimes reflect children's opinions'. Third, the main information source was 'store display'. The main place of purchase was large discount stores, internet home-shopping, and department stores (respectively) with significant differences in the age of the parent(p<.05) and monthly incomes(p<.001). In the clothes size selection, 72.1% of the parents selected 'one size larger' at time purchase and showed asignificant difference by monthly income. Repair-experience after purchase appeared in 31.4% of the samples because of the inadequate length and width of the clothes. The unfit clothes parts were in the order of pant length, sleeve length, waist part, jacket length, pant width, hip part, and crotch, which showed a significant difference in children based on gender. The salient purchasing point for child clothing was in the order of 'size fit', 'color and pattern', 'design' and 'convenience in action'. It is important to consider that kindergarten children need adequate size for growing and convenient pattern designs (that include materials at stretching parts) for positive acting because they are in a period of frequent activity and growth.