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PNF 하지 패턴 중 동적반전(dynamic reverse) 기법이 퇴행성 슬관절염 환자의 균형능력에 미치는 영향
정현성,전호영,배성수,Jung, Hyun-Sung,Jeon, Ho-Young,Bae, Sung-Soo 대한고유수용성신경근촉진법학회 2006 PNF and Movement Vol.4 No.1
Purpose : The main purpose of this study was to investigate the effect on Balance Ability of Knee Osteoarthritis(OA) by Lower Extremity Patterns with dynamic reverse in Proprioceptive Neuromuscular Facilitation(PNF). Methods : The subjects were consisted of 30 women patients with knee OA. All subjects were randomly assigned to PNF group. Each group had a treatment for 30 minutes per day and three times a week during 8 weeks period. Was used to measure recovery or worse of patient's condition, muscle assessment questionnaire(MAQ) was used to measure patient' s muscular strength, Endurance, coordination/balance, KWOMAC was used to pain, stiffness, and physical function, and BPM was used to measure path, anterior-posterior. Results : This study results in following conclusons. 1. MAQ score was significantly decreased in PNF group(p<.05). 2. KWOMAC score was significantly decreased in PNF group(p<.05). 3. BPM were score was significantly decreased in PNF group(p>.05). Conclusion : From this result the PNF treatment retrogression characteristic will be effective in treatment of patient, with the arthritis and widely may be applied at a therapist.
고유수용성 신경근 촉진법 굴곡 신전 패턴이 두경부에 미치는 영향
전호영,정현성,배성수,Jeon, Ho-Young,Jung, Hyun-Sung,Bae, Sung-Soo 대한고유수용성신경근촉진법학회 2006 PNF and Movement Vol.4 No.1
Purpose : To identify the effects of Hold-Relax of proprioceptive neuromuscular facilitation (PNF) on the functional improvement of patients with neck myofascial pain syndrome. Methods : The present research investigated 30 patients with neck myofascial syndrome, dividing them into a group doing Hold-Relax of proprioceptive neuromuscular facilitation. This study examined degree of recovery from neck pain by comparing their neck myofascial pain syndrome before and after the treatment, and compared to find difference in the degree of recovery from myofascial pain syndrome. Results : The results are as follows. For the Hold-Relax of proprioceptive neuromuscular facilitation(PNF), the visual analogue scale(VAS) decreased significantly for six weeks treatment, and the range of motion(ROM) of cervical vertebrae increased significantly(p<.05). Conlusion : This study suggest that Hold-Relax of proprioceptive neuromuscular facilitation have an effect on the functional improvement of patients with neck myofascial pain syndrome.
좁은밴드모델을 이용한 실린더 내의 비회색 가스 복사열전달 연구
박원희,정현성,김태국,Park, Won-Hee,Jung, Hyun-Sung,Kim, Tae-Kuk 대한기계학회 2002 大韓機械學會論文集B Vol.26 No.6
Radiative transfer in energy systems such as furnaces, combustors, boilers and high temperature machineries is a significant mode of heat transfer. Although there are many solution schemes suggested for analysis of radiative transfer in multi-dimensional systems, the applicabilities and accuracies of these schemes have not fully tested for nongray gases. Especially reference data for enclosures of non-orthogonal shapes are not yet enough. In this paper we present some precise radiative transfer solutions for a black walled 3-dimensional cylindrical system filled with nongray gases. The SNB(statistical narrow band) model and the ray-tracing method with the T$_{N}$ quadrature set are used for finding nongray solutions. Although the solution method used in this study is not suitable for engineering purposes, the resulting solutions are proved to be quite accurate and can be regarded as the exact solutions and the results presented in this paper can be used in developing various solution schemes fur radiative transfer by real gas mixtures.s.
기계적 합금화된 TiH<sub>2</sub>의 수소방출에 따른 미세조직 특성
정승,정현성,안재평,박종구,Jung S.,Jung Hyun-Sung,Ahn Jae-Pyoung,Park Jong-Ku 한국분말야금학회 2006 한국분말재료학회지 (KPMI) Vol.13 No.3
We manufactured the metal hydrides of $(Ti_{0.88}Mg_{0.12})H_2$ using a very easy and cheap way that Ti-12%Mg blending powder was mechanically milled with liquid milling media such as isopropyl alcohol ($C_3H_8O$, containing oxygen) and hexane ($C_6H_{14}$, no oxygen) as hydrogen source. The $(Ti_{0.88}Mg_{0.12})H_2$ synthesized in isopropyl alcohol contained the high oxygen of 11.2%, while one in hexane had the low oxygen content of 0.7%. Such a difference of oxygen content affected the dehydriding behavior, phase transformation, and microstructural evolution at high temperature, which was investigated through X-ray diffraction and DSC measurements, and electron microscope observations.