http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
생체용 Ti합금의 산화거동에 미치는 Ta 및 Nb 첨가의 영향
이도재,오태욱,박범수,김수학,전충극,윤계림,Lee Doh-Jae,Oh Tae-Wook,Park Bum-Su,Kim Soo-Hak,Jun Choong-Geug,Yoon Kye-Lim 한국재료학회 2004 한국재료학회지 Vol.14 No.3
The oxidation behaviors of Ti-10Ta-10Nb alloy and Ti-6Al-4V alloy were studied in dry air atmosphere. Specimens were melted in consumable vacuum arc furnace and homogenized at $1050^{\circ}C$ for 24 h. Hot rolling was performed at $1000^{\circ}C$. Specimens of the alloys were oxidized as the temperature range $400~650^{\circ}C$ for 30 min. The oxidation behavior of the alloys was analysed by optical microscope, SEM/EDX, XRD, XPS and TGA. Immersion test was performed in 1% Lactic acid. In the microscope observation, oxide layer of Ti-10Ta-10Nb alloy was denser and thinner than Ti-6Al-4V's. The weight gains during the oxidation rapidly increased at the temperature above $600^{\circ}C$ in Ti-6Al-4V's alloy and$ 700^{\circ}C$ in Ti-10Ta-10Nb alloy. According to XRD results, oxide layers were composed of mostly $TiO_2$(rutile) phase. It was analysed that the passive film of the Ti alloys consisted of $TiO_2$ through X-ray photoelectron spectroscopy(XPS) analysis.
한의복합치료와 전정재활운동을 병행하여 뇌졸중 후 어지러움과 보행불안 증상이 개선된 증례 보고
추홍민 ( Hongmin Chu ),임현서 ( Hyeon-seo Lim ),김광호 ( Kwangho Kim ),이영웅 ( Young-ung Lee ),박경태 ( Kyungtae Park ),장종원 ( Jongwon Jang ),류호선 ( Ho-sun Ryu ),김수학 ( Su-hak Kim ),김철현 ( Cheol-hyun Kim ),이상관 ( Sangkw 한방재활의학과학회 2020 한방재활의학과학회지 Vol.30 No.4
The aim of this study was to report the effect of Korean medicine treatments and vestibular rehabilitation practice on an stroke patient with dizziness. The patient received Korean medicine treatments, such as acupuncture and herbal medication, and vestibular rehabilitation practice. The effects of treatments were assessed with the Korean dizziness handicap inventory, Korean activities-specific balance confidence scale, Korean vestibular disorders activities of daily living scale. Researchers conducted gait analysis for evaluation patient’s gait disturbance’s improvement during treatments. The intensity of dizziness were significantly reduced after the complete treatment. After treatment with traditional Korean medicine and vestibular rehabilitation practice, the patient showed significant improvements in symptoms and gait parameters. This case proved that combined therapy of Korean medicine treatment and vestibular rehabilitation practice can be useful for stroke patients who suffered from dizziness. however, studies of larger populations are required in the future. (J Korean Med Rehabil 2020;30(4):179-186)
이도재(Doh-Jae Lee),이광민(Kwang-Min Lee),이경구(Kyung-Ku Lee),박범수(Bum-Su Park),김수학(Soo-Hak Kim),전충극(Choong-Geug Jun),윤계림(Kye-Lim Yoon) 한국표면공학회 2004 한국표면공학회지 Vol.37 No.1
The oxidation behavior of Ti-Nb alloys was studied in dry atmosphere. After vacuum arc melting and hot rolling treatment, Ti-Nb alloys were oxidized at 450℃~750℃. The oxidation behaviors between matrix and oxide scale were analyzed by SEM, XPS and XRD. Ti-Nb alloys had higher oxidation resistance than pure Ti at 750℃. XPS analysis of oxide film revealed that TiO₂ oxide was formed on the top of surface. The weight gains during the oxidation increase rapidly at temperature above 600℃ which obey the parabolic law.