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RISS 인기검색어
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- 저자 : 이옥규 ( Ok-kyu Lee ) (검색결과 6 건)
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복합시술 모발의 자외선 보호처리에 따른 손상도와 색상 변화
라채숙ㆍ권수애ㆍ이옥규(hae Suk LaㆍSoo Ae KweonㆍOk Kyu Lee) 한국인체미용예술학회 2016 한국인체미용예술학회지 Vol.17 No.1
This study aimed to determine the effects of UV-blocking by the type of UV care agent for complex-treated hair. For this, healthy women’s hair was permed, bleached and dyed, and a Polypeptide Protein Treatment and hair sunscreen agent were applied. After that, changes in the degree of wave formation, hair surface conditions, physical properties of the hair and hair hue were examined by irradiating UVB rays. The analysis results were found as follows: In terms of the degree of wave formation, no difference was observed among UV care agents. In terms of hair surface scale, hair damage was lower when the hair was coated twice as opposed to being coated once regardless of the type of the UV care agent and treatment method. In addition, tensile strength, elongation rate and resilience rate were superior in the hair recoated with the hair sunscreen agent. In contrast, no significant difference was observed among the UV care agents in terms of damage rates. Lightness and reflected light were also high in the hair recoated with the hair sunscreen agent. In addition, the a* value, reflection and dominant wavelength were the highest in the hair with post-treatment coating for the skin while b* value, reflection and degree of irritation was the highest in the hair with post-treatment coating for hair. The said results can be summarized as follows: The UV care agent revealed effective UV-blocking effects by maintaining the wave formation and preventing hair damage. When UV rays were irradiated, the hair for post-treatment product was the most efficient in maintaining hair color.
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염색 시술 모발의 자외선 차단제 처리 시 손상도와 색상 변화
이옥규 ( Ok-kyu Lee ),권수애 ( Soo-ae Kweon ),라채숙 ( Chae-suk La ) 대한미용학회(구 대한미용과학회) 2016 대한미용학회지 Vol.12 No.4
This study was carried out to evaluate the protective effects of sunscreen treatment to dyed hair against ultraviolet B (UVB) irradiation. Emulsion-type (E) or mist-type (M) sunscreen was applied to dyed hair (DH) and bleached & dyed hair (B/ DH), before irradiation with UVB. Then, changes in physical property and color of hair were measured. In the M hair group, B/DH was lower than DH in tensile strength. In both E and M groups, B/DH was lower than DH in elongation rate and frictional force. In damage rate, B/DH was greater than DH. In scanning electron microscopic images of hair cuticle surface, the cuticle in E hair was more stable than M hair and scale damage in M hair was greater than E hair. In L*, a* and b*, B/DH was greater than DH in both E and M groups. In ΔE, DH was greater than B/DH in both groups. These results indicated that as the duration of UV irradiation increased, tensile strength, elongation rate and frictional force declined while damage rate increased, causing discoloration regardless of the type of sunscreen. To reduce physical damage of dyed hair, E-type sunscreen should be used. However, to best maintain hair color, it is preferable to use M-type sunscreen.
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6주간의 코어운동프로그램이 대학 사격선수들의 견관절 기능, 척추정렬 및 균형능력에 미치는 영향
이옥규 ( Ok Kyu Lee ),장갑석 ( Kap Seok Jang ),조인호 ( In Ho Cho ) 한국체육대학교 체육과학연구소 2014 스포츠사이언스 Vol.31 No.2
본 연구는 사격선수들에게 있어서 코어운동프로그램을 통한 견관절 기능, 척추정렬 및 균형능력의 변화를 분석하여 상해 예방과 경기력 향상을 위한 보강 운동프로그램으로써 코어운동프로그램의 효과를 알아보기 위해 시행되었다· 본 연구를 통해 코어운동프로그램이 사격선수들의 견관절 가동범위와 등속성 근기능(신근 60°, 180°/굴근 180°, 240°), 흉추 후만만곡에서 통계적으로 유의하였으나, 견관절 고유수용감각과 균형능력에서는 통계적 유의함이 검증되지 못했다· 따라서 본 연구에서 밝혀진 결과들은 사격선수들의 보강운동프로그램으로 일반화시키기에는 제한이 있기 때문에 사례수와 운동기간 등의 내용을 보강한 사후연구가 필요할 것으로 생각된다· This study was performed to identify body core training on the ROM, proprioception, muscle strength of shoulder, spinal alignment, balance in collegiate pistol shooters · through body core training program for 6weeks· There was no significant difference in Shoulder joint Extensor ROM, but Flexor ROM was increased significantly after treatment· Proprioception, is associated with shoulder instability, and shouldeer Extensor/Flexor strength was improved significantly (60°/sec, 180°/sec) after core training program· Also, Lateral deviation, Kyphotic angle and Lordotic angle were improved through core training program· Balance and shooting performance also improved after through body alignment and core training program·
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유리섬유복합재의 드릴가공조건에 대한 박리지수와 표면조도 특성
이옥규 ( Ok Kyu Lee ),안대건 ( Dae Keon Ahn ),최진호 ( Jin Ho Choi ),권진회 ( Jin Hwe Kweon ) 한국복합재료학회 2013 Composites research Vol.26 No.6
본 논문에서는 유리섬유복합재(glass fiber reinforced plastic composites)의 드릴가공조건변화에 따른 박리 지수와 표면조도 특성이 분석되었다. 드릴 가공된 홀의 입출구에서 이미지 픽셀을 이용하여 박리지수를 산출할 수 있는 관계식이 유도되었으며, 복합재 시편을 제작하여 진동 및 열 영향을 최소화할 수 있는 가공조건에서 드릴가공을 수행하여 보다 신뢰성 있게 표면조도값을 얻기 위하여 6점평균표면조도측정 방식이 적용되었다. 실험 결과로부터 GFRP 드릴가공에서 박리지수는 이송속도 증가에 감소하고, 절삭속도 증가에도 미세하게 감소함을 볼 수 있었다. 또한 드릴가공된 홀 내부에서 표면조도는 이송속도가 증가할수록 증가하고, 절삭속도 변화에는 영향을 받지 않음이 파악되었다. Characteristics of delamination factor and surface roughness by drilling condition for glass fiber reinforced plastic (GFRP) composites were investigated in this paper. An expression to quantify the delamination factor was induced by using image pixels of the entry and the experimental drilling was accomplished by fabricating several GFRP specimens in condition of minimizing the effect of vibration and heat. A method for measuring 6 points average surface roughness was applied to acquire the more reliable roughness values. The experimental results showed that the delamination factor was decreased as the feed rate was increased and it was also slightly decreased as the cutting speed was increased. Also, it was investigated that the surface roughness at inner surface of drilled holes was increased as the feed rate was increased, whereas the roughness values were not affected by the cutting speed variation.
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퍼머넌트 모발의 자외선 조사에 따른 웨이브 유지력 및 손상도 변화
라채숙(Chae Suk La),권수애(Soo Ae Kweon),이옥규(Ok Kyu Lee) 한국인체미용예술학회 2014 한국인체미용예술학회지 Vol.15 No.4
This study aims to determine the effects of UV types on permed hair. According to an analysis of changes in wave continuance by the type of perm agent and UV type, hair shape and physical properties when UV rays (A, B and C) with different wavelength were applied to permed hair, the wave continuance degree by UV irradiation further declined in UVB and UVC irradiations compared to UVA in 'C' perm. In 'T' perm, UVA was the lowest, followed by UVB and UVC in terms of wave continuance degree. The physical properties were significantly lower in UVC irradiation than UVA and UVB irradiations in perm agents. However, the damage rate in 'T' perm was greater in UVB and UVC irradiations than in UVA. According to an analysis of the type of perm agent and UV type, UVA was the lowest, followed by UVB and UVC in terms of wave continuance and hair physical properties, while elongation rate was the lowest in UVC irradiation rather than in UVA and UVB. According to an analysis of scales on the hair surface, the damage degree of the hair surface in 'T' perm agent under UVC irradiation was particularly high. The wave continuance degree and physical hair properties by the type of perm agent were significantly decreased in 'T' perm agent, more so than 'C' perm agent. In summation, both the type of perm agent, UV irradiation time and UV type had a considerable effect on wave continuance and hair physical properties. Specifically, 'T' perm agent and UVC had the biggest effect on wave continuance degree and hair damage degree.
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