• 대한정형도수물리치료학회지
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• 제28권2호
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• pp.25-34
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• 2022

Background: Cervical headache (CGH) is a common condition that causes serious damage. Mulligan described a sustained natural apophyseal glides (SNAGs) as a manual therapy approach to treat this dysfunction. Although there have been several case studies to evaluate the effectiveness of SNAG, the efficacy of SNAG for cervical headaches is still controversial. Therefore, this study examined the effects of Mulligan's SNAG technique on cervical headache and pain intensity to present basic clinical data. Methods: Thirty-two subjects participated in this study, 16 each in the experimental and control groups. The experimental group applied Mulligan's SNAGs technique and the control group applied the placebo SNAGs technique. Results: Significant differences (p<.05) in the changes in pain, neck disability index (NDI) and Hamilton rating scale for depression (HRSD) were observed between the two groups. Conclusion: The application of Mulligan's SNAG technique to patients with cervical headaches effectively reduced headache, depression, and neck dysfunction. Based on this study, Mulligan's SNAGs technique can be used as an objective research method for additional studies targeting cervical headache patients in the future.

• 한국연안방재학회지
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• 제1권1호
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• pp.1-9
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• 2014

In order to examine the characteristics of tsunami run-up heights on impermeable/permeable slope, a numerical wave tank by upgrading LES-WASS-3D was used in this study. Then, the model were compared with existing hydraulic model test for its verification. The numerical results well reproduced experimental results of solitary wave deformation, propagation and run-up height under various conditions. Also, the numerical simulation with a slope boundary condition has been carried out to understand solitary wave run-up on impermeable/permeable slope. It is shown that the run-up heights on permeable slope is 52.64-63.2% smaller than those on the impermeable slope because of wave energy dissipation inside the porous media. In addition, it is revealed that the numerical results with slope boundary condition agreed well with experimental results in comparison with the results by using stair type boundary condition.

• 대한정형도수물리치료학회지
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• 제29권3호
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• pp.13-22
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• 2023

Background: The purpose of this study was to investigate the effects of functional massage and stretching, applied to the elbow and shoulder joints, on pain, tenderness threshold, and grip strength. Methods: A total of 29 individuals were assigned to a single site (n=15) or multiple sites (n=14). Pain measured through the visual analogue scale (VAS), tenderness threshold (TTH), and grip strength (GI) were measured before and four weeks after the intervention. Results: After four weeks of treatment, visual analogue scale significantly decreased in both groups (p<.05), and the tenderness threshold and grip strength significantly increased in both groups (p<.05). There was also a significant difference between the two groups (p<.05). Conclusion: The reduction of visual analogue scale and the increase in the tenderness threshold and grip strength were more significant in the multi-site treatment group than in the single-site treatment group.

• Journal of Acupuncture Research
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• 제41권2호
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• pp.129-134
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• 2024

Knee osteoarthritis (KOA) is a prevalent degenerative joint disease causing significant pain and dysfunction. This case report presents the use of electromagnetic acupuncture utilizing a Whata 153 device generating a magnetic field to enhance acupuncture stimulation for the treatment of KOA. A 69-year-old female diagnosed with KOA experienced a reduction in pain (numerical rating scale score from 7 to 4), improved gait, and decreased stiffness and swelling after daily electromagnetic acupuncture treatments during hospitalization. In addition, the Korean Western Ontario and McMaster Universities Osteoarthritis Index scoreimproved from 20 to 14, and the patient rated her overall improvement as "significantly improved" on the patient's global impression of change scale. Although these findings suggest potential benefits of electromagnetic acupuncture for KOA, the case report design limits its generalizability. More controlled trials are warranted to confirm the efficacy and safety of electromagnetic acupuncture as a treatment of KOA.

• 한국지반공학회논문집
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• 제29권4호
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• pp.13-22
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• 2013

본 연구에서는 스미어가 발생한 지반을 모사하고 배수재 간격비에 따른 스미어 영역 겹침 유 무가 차후의 압밀거동에 미치는 영향을 분석하기 위해 대형압밀챔버와 맨드렐 관입시험기를 이용하여 다양한 실내모형실험을 수행하였다. 또한, 이를 바탕으로 유한요소해석을 실시하였고 연직배수공법의 효율성을 분석하였다. 실험 및 해석결과 스미어 발생은 침하량을 증가시키지만 스미어 겹침은 반대로 침하량을 감소시키는 경향을 보였다. 또한 연직배수재를 설치하면 압밀이 촉진되지만 배수재 간격을 줄여도 스미어의 영향으로 압밀속도는 크게 빨라지지 않았으며, 오히려 스미어 영역이 겹칠 정도로 배수재 간격을 줄이면 압밀효율이 급격히 떨어지는 것으로 나타났다.

• Journal of Advanced Marine Engineering and Technology
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• 제38권1호
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• pp.86-91
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• 2014

조선해양 및 플랜트 분야에서의 전력계통 구성은 분산 배치된 각각의 발전모선을 전기적으로 연결하여 사용한다. 이러한 방식은 다중화 된 모선이라기보다는 육상에서의 계통 연계와 동일한 개념으로 인식하는 것이 적합할 것이다. 이는 발전모선의 추가로 인하여 모선의 단락용량 또한 비례적으로 증대되기 때문이다. 단락용량의 증가는 관련 제반 비용의 상승을 초래하고 전기적 고장 발생 시에 물리적으로 연결된 모선들이 일시에 대정전(Blackout)을 발생시킬 가능성도 높아진다. 이러한 문제점을 해결하기 위하여 본 논문에서는 한류 리액터가 적용된 조선해양 전력계통에서 발전모선을 위상구조(Bus Topology)에 따라 분류하고 고장 종류 별로 단락전류 해석을 수행하였으며 그 결과를 상호 비교하여 장단점을 제시하였다.

• 자원환경지질
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• 제22권4호
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• pp.371-379
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• 1989

서산지역의 변성퇴적암류에 대한 변성온도 및 압력 조건이 공존하는 변성광물에 대한 분석결과로부터 측정될 수 있었다. 석류석과 흑운모 지온계 (Ferry and Spear, 1978; Ganguly and Saxena, 1984)를 이용한 온도 측정 결과, 서산층에 서는 $620{\pm}40^{\circ}C$이며, 대산층에서는 $520{\pm}20^{\circ}C$인 것으로 나타났다. 석류석-사장석-$Al_2SiO_5$- 석영 지압계 (Newton and Haselton, 1981; Gangul and Saxena, 1984)을 이용한 압력 측정 결과, 두 층 모두 5-6kb로, 유사한 압력 조건을 보여주고 있다. 이같은 결과는 같은 압력 조건 아래에서 서산층이 대산층보다 상대적으로 높은 온도의 변성작용을 받았음을 제시해 준다. 서산층과 대산층에서 Fe, Mg, Mn 등 주원소에 대한 석류석의 chemical zonation은 서로 다른 양상을 보여 주는데, 아마도 두 층이 다른 열적 변성과정(thermal history)을 받아온 결과인 것같다.

• Journal of Biosystems Engineering
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• 제34권6호
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• pp.462-469
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• 2009

The aim of this study was to develop a portable electronic nose system for freshness measurement of stored pork. An electronic nose system was constructed using seven different MOS sensor array. To determine the quality change of pork with storage time, the samples were divided into ten groups in terms of storage time with an increment of 2 day up to 19 storage days. GC-MS, total bacteria's count (TBC), thiobarbituric acid reactive substance (TBARS), and pH analyses as well as the analysis of the electronic nose system measurement were performed to monitor the freshness change of the samples. To investigate the performance of the electronic nose system for detecting the change of freshness of pork, the acquired signal values of the system were compared with those of GC-MS, TBC, TBARS, and pH analysis values. According to principal component analysis (PCA) and linear discriminant analysis (LDA) with the signals of the electronic nose system for the pork samples, the sample groups were clearly separated into two groups of 1-9 days and 11-19 days, and four groups of 1-3 days, 5-9 days, 11 days, and 13-19 days respectively. The results show that the electronic nose system has potential for evaluating freshness of pork.

• 유기물자원화
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• 제22권1호
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• pp.49-56
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• 2014

본 연구에서는 돈과 우육의 생분해도 특성을 평가하기 위하여 혐기성 회분식 실험을 수행하였다. 돈육의 경우 최대 메탄 발생속도와 초기 순응 시간은 각각 46.7 mL CH4/g VS.d 및 17.2 d로 나타났다. 우육의 경우에는 돈육에 비해 최대 메탄 발생 속도는 56.5%, 초기 순응 시간은 24% 낮게 나타났다. 축종별 혐기성 생분해도 차이는 상이하게 보이나 동일 축종 내 지방 함량 증가에 따라 최대 메탄 발생속도와 초기 순응 시간은 선형적으로 증가하였다. 또한, 지방 함량 증가에 따른 우육의 최대 메탄 발생속도 및 초기 순응 시간 상승률은 돈육에 비해 높게 나타났다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2006년도 춘계 학술발표회 논문집
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• pp.1245-1250
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• 2006

The rapid growth of the economy recently gas led to increasing social needs for large scaled structures, such as high-rise buildings and long span bridges. In building these large-scaled structures the trend has been to construct foundations beating on or in rock masses in order to ensure stability and serviceability of the structure under several significant loads. However. when designing the drilled shaft foundation socketed in rock masses in Korea, the bearing capacity for the pier used to be determined by using the empirical expression, which depends on the compressive strength of the rock, or presumable bearing capacity recommended on foreign references or manuals. In this study, numerical analyses are used to trace rock-socketed pile behavior and are made alike with pile load test result in field. The result of this numerical analyses study have shown that following factors have a significant influence on the load capacity and settlement of the pier. Significant influence first factor of the geometry of the socket as defined by the length to diameter ratio. Second factor of the modulus of the rock both around the socket and below the base. third factor of the condition of the end of the pier with respect to the removal of drill cuttings and other loose material from the bottom of the socket.