• Journal of the Korean Society of Physical Medicine
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• v.6 no.3
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• pp.341-351
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• 2011

Purpose : The purpose of this study was to determine the initial effects of deltoid inhibition taping to Pain, Function, Strength, ROM in shoulder impingement syndrome (SIS). Methods : This study is 28 patients(male 16, female 12) with shoulder impingement syndrome(SIS).The experimental group received deltoid inhibition taping and the control group had sham taping. Outcome variables measured degree of pain, disability, strength, and range of motion at pre-post intervention. The changes between pre-post interventions are analyzed by a repeated measure ANOVA test. Results : Pain and disability index significantly decreased (p<.05), and the rate of change in pain and disability level of the experimental group increased significantly more than control group (p<.05). Strength and range of motion significantly increased (p<.05), but the rate of change of the two groups showed no significant difference (p>.05). Conclusion : These results suggest that deltoid inhibition taping was initial effective in decreasing pain and disability in SIS patients.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.30 no.2
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• pp.98-107
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• 2002

An experimental and numerical study of aerodynamic charateristics of KSR-III and jet impingement on a deflector during launch has been conducted. To investigate aerodynamic characteristics of KSR-III configuration, wind tunnel tests using 6.4% scale model were performed by 4x4 feet ADD trisonic wind tunnel on the Mach number range of 0.4~3.8. Solutions of Three dimensional Euler equations were also obtained and compared with test result. For the study of KSR-III jet impingement flowfield on a deflector during launch operation, unsteady computation using CFD-FASTRAN was performed.

• Clinics in Shoulder and Elbow
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• v.1 no.1
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• pp.35-39
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• 1998

From May 1994 to May 1995, we performed a prospective controlled double-blind clinical study of 85 patients(85 shoulders). For inclusion in the study all patients met the following criteria: 1) a diagnosis of impingement syndrome by lidocaine injection test; 2) symptoms for at least three months; 3) no previous subacromial injection; 4) no evidence of rotator cuff tear. We excluded the patients from the study who showed a instability or other clear primary cause. The patients were randomized to receive either 5/subcc/ 2% lidocaine with 4ee of 20mg/cc Depomedrol(Group 1) in 45 cases or 5/subcc/ 2% lidocaine solely(Group 2) in 40 cases. At three month follow-up, all results were better in steroid group than control group. But at one year, improvement of pain and daily activity showed no difference between two groups. So we conclude that the use of subacromial steroid injection is effective for short-term therapy in the treatment of subacromial impingement syndrome, but the long-term effectiveness is doubtful.

• The Journal of Internal Korean Medicine
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• v.38 no.6
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• pp.1060-1067
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• 2017

Objectives: This case study examined the effects of treatment with traditional Korean medicine on a central post-stroke pain patient, who had impingement syndrome of the right shoulder. Methods: The patient received traditional Korean medical treatments, including acupuncture, warm-needling, moxibustion, and cupping, throughout the treatment period, and extracorporeal shock-wave therapy and physical therapy for part of the treatment period. The effects of treatments were measured with a manual muscle test (MMT), numerical rating scale (NRS), range of motion (ROM), and gait staging index (self-invented). Results: The clinical symptoms of the patient were improved considerably after the complete treatment. Conclusions: Traditional Korean medicine may be effective for treatment of central post-stroke pain in patients with impingement syndrome.

• Journal of Advanced Marine Engineering and Technology
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• v.20 no.2
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• pp.92-92
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• 1996

Recently, with the rapid development in the oceanic systems such as the oceanic structures and vessel, there occurs much interest in the impingement erosion-corrosion. In this paper, Cu-metal was tested by using of erosion apparatus with water-jet type and was investigated under the behaviour of impingement erosion-corrosion according to various environmental conditions, and the properties of Cu-metal were evaluated through the measurement by weight loss, weight loss rate, protective efficiency. The results were compared with those obtained using Cu-metal applied to cathodic protection and Cu-alloys added to Zn or Al-metal. As a basis of those results, the best protective efficiencies could be taken as using cathodic protection method and Cu-alloy with Al & Zn material addings, and will be suggested as the fundamental data of the anti-impingement erosion-corrosion on Cu-metal of impeller material for oceanic centrifugal pump.

• Journal of Advanced Marine Engineering and Technology
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• v.20 no.2
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• pp.24-31
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• 1996

Recently, with the rapid development in the oceanic systems such as the oceanic structures and vessel, there occurs much interest in the impingement erosion-corrosion. In this paper, Cu-metal was tested by using of erosion apparatus with water-jet type and was investigated under the behaviour of impingement erosion-corrosion according to various environmental conditions, and the properties of Cu-metal were evaluated through the measurement by weight loss, weight loss rate, protective efficiency. The results were compared with those obtained using Cu-metal applied to cathodic protection and Cu-alloys added to Zn or Al-metal. As a basis of those results, the best protective efficiencies could be taken as using cathodic protection method and Cu-alloy with Al & Zn material addings, and will be suggested as the fundamental data of the anti-impingement erosion-corrosion on Cu-metal of impeller material for oceanic centrifugal pump.

• Journal of the Korean Society for Heat Treatment
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• v.23 no.5
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• pp.249-256
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• 2010

Water jet impingement cooling has been widely used in a various engineering applications; especially in cooling of hot steel plate of steelmaking processes and heat treatment in hot metals as an effective method of removing high heat flux. The effects of cooling water temperature on water jet impingement cooling are primarily investigated for hot steel plate cooling applications in this study. The local heat flux measurements are introduced by a novel experimental technique that has a function of high-temperature heat flux gauge in which test block assemblies are used to measure the heat flux distribution during water jet impingement cooling. The experiments are performed at fixed flow rate and fixed nozzle-to-target spacing. The results show that effects of cooling water temperature on the characteristics of jet impingement heat transfer are presented for five different water temperatures ranged from 5 to $45^{\circ}C$. The local heat flux curves and heat transfer coefficients are also provided with respect to different boiling regimes.

• Journal of Mechanical Science and Technology
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• v.19 no.12
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• pp.2312-2320
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• 2005

The aerodynamic effects of leading-edge accretion can raise important safety concerns since the formulation of ice causes severe degradation in aerodynamic performance as compared with the clean airfoil. The objective of this study is to develop a numerical simulation strategy for predicting the particle trajectory around an MS-0317 airfoil in the test section of the NASA Glenn Icing Research Tunnel and to investigate the impingement characteristics of droplets on the airfoil surface. In particular, predictions of the mean velocity and turbulence diffusion using turbulent flow solver and Continuous Random Walk method were desired throughout this flow domain in order to investigate droplet dispersion. The collection efficiency distributions over the airfoil surface in simulations with different numbers of droplets, various integration time-steps and particle sizes were compared with experimental data. The large droplet impingement data indicated the trends in impingement characteristics with respect to particle size ; the maximum collection efficiency located at the upper surface near the leading edge, and the maximum value and total collection efficiency were increased as the particle size was increased. The extent of the area impinged on by particles also increased with the increment of the particle size, which is similar as compared with experimental data.

• Corrosion Science and Technology
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• v.21 no.5
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• pp.327-339
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• 2022

The water-jet technique started by Bridgman can cut metal and alloys without harmful gas and fume. However, while this technique is convenient to cut metals and alloys, in the case of coated pipe, water jet induces the degradation of coatings on the pipes, and may facilitate structural failure, leakage, and loss of products. While there are many reports on the effect of water jet on cut metals and the damage of metallic materials, research on the effect of water impingement on the epoxy coatings has been little studied. In this work, we therefore control the velocity of water jet, distance between nozzle and specimen, and water temperature, and discuss the effect of water impingement on the epoxy coatings. Increasing water velocity and water temperature and reducing nozzle distance increased the degradation rates of three epoxy coatings were increased. Among three test parameters - water velocity, nozzle distance and water temperature, water temperature was relatively effective to increase the degradation rate of epoxy coatings.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2011.11a
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• pp.254-257
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• 2011

Two types of thrusters(Descent Control Thruster (DCT) for reducing landing speed and Attitude Control Thruster (ACT) for attitude control) are mounted on the propulsion system of Ground test model lunar lander. In this paper, plume impingement effect and ground effect between DCT Modules are analyzed using numerical method when the impact occurred close to the ground.