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        검색결과 10

        1.
        2022.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to verify how similar the virtual fit pants are to the actual fit of stretchable pants. Data is produced using a virtual model to apply movements. The results show that in the upright position, the similarity between the appearance of the actual fit and the virtual fit is high. Results are 4.47, 4.13 and 4.33 out of 5 on the front, side, and back, respectively. The base line of the front and back, and the amount of allowance in each part were well reproduced by the model. The texture of the virtual fit was evaluated and found to be similar to the actual fabric. In terms of shape and number of wrinkles with the virtual fit pants, large wrinkles were better expressed than fine wrinkles. After applying movements to the virtual model, the front and side results were similar to the actual fit, but the back results were different. As a result of multiple comparisons, the greatest difference in similarity by movements is found in the center front line. The similarity difference was lower on the side than on the front. The only significant difference after applying movements is in the hip circumference margin. According to movements, the similarity of virtual fit is lower on the back than on the front and side, and the back also has the largest similarity differences to the movements type.
        4,800원
        3.
        2020.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Due to the development of the industry, the importance of injection molded products is increasing in the fields of electricity, electricity, automobiles, etc. Through this experiment, the weight change of molded products according to the injection speed change during injection molding was investigated. As a result of the experiment, a statistical program was used to confirm that the pi control method produced about 69.2% more weight deviation than the dpi method and to adopt the null hypothesis that the p-value was less than 0.05 Injection speed affected the molded product.
        4,000원
        4.
        2018.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study examined the color reproducibility and color fastness of digital textile printing for nylon sublimation transfer. After measuring the temperature and time suited to nylon sublimation transfer, the researchers conducted various tests for comparison and analysis including polyester transfer paper on polyester fabric to check dyeing characteristics, color change, sharpness, and the rubbing fastness of the dyeing samples for nylon sublimation transfer. These tests produced the following results. At 185℃ and 187℃, the sublimation transfer dyeing characteristics of nylon were similar to those of polyester and the researchers even observed superior color development in some colors; at a low temperature of 180℃, the sample that was worked on had the lowest level of color development. The examination of color difference (ΔE), which compared L*a*b* values, showed that the ΔE value of magenta was 10.34, that of yellow was 24.70, and that of black was 15.28. These results highlight the important role of heat treatment temperature and time on color development in nylon sublimation transfer. Concerning sharpness, the samples subjected to higher temperature heat treatment exhibited fewer color spreading phenomena around lines. Thus, dyeing properties and fastness can be enhanced by elongating time at low temperatures and shortening time at high temperatures; however, considering production time constraints as well as the need to produce industrially marketable quantities, the findings of this study suggest that the heat treatment temperature most suitable for nylon sublimation transfer is 187℃ for a duration of 50 seconds.
        4,000원
        5.
        2017.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: The measurement of the strength of the shoulder muscles is an important element of the overall assessment of patients with various shoulder disorders. However, the clinical utilization of this measurement is dependent on its reproducibility. Objects: To explore the reproducibility of the measurements derived from testing of the isokinetic strength of shoulder muscles in patients with tendinitis of the rotator cuff. Methods: A total of 20 patients with tendinitis of the rotator cuff participated in this study and were assessed twice in 1 week. Isokinetic testing was performed concentrically for shoulder flexors, abductors, and external rotators and eccentrically for the shoulder extensors, adductors, and internal rotators. The relative and absolute reproducibility of the peak torque (PT) and ratios were assessed using intra-class correlation coefficients (ICC), standard error of measurement (SEM), and minimal clinically important difference (MCID), respectively. Results: Overall, high to excellent ICC, clinically acceptable SEM and MCID values were obtained for the PT (ICC: .83-.95, SEM: 1.2%-9%, MCID: 3.4%-25%) and ratios (ICC: .85-.93, SEM: 5.1%-10%, MCID: 14.2%-27.6%). Conclusion: These findings suggest that isokinetic tests may be effectively utilized for the determination of shoulder strength profiles and appropriate position are recommended to perform test without pain in patients with tendinitis of the rotator cuff.
        4,000원
        6.
        2015.11 구독 인증기관 무료, 개인회원 유료
        The private fixed device is needed for a radiation therapy about breast cancer. But this option is wrong applies to every hospital. Thereupon, we will establish standard of option for body-specific. 42 patients on 4 months were enrolled. The option of fixed device applied to divide into 6 kinds. The images were analyzed by OBI. In result, It is excellent reproducibility of position by all body-specific that It is applied head holder, shoulder holder, cotton, kneefix.
        4,000원
        7.
        1995.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The Synthesis of long chain fatty acid containing azobenzene and (Cn-Azo) was optimized, starting from p-(p'-hydroxy phenyl azo)-benzoic acid and the product of reaction containing azobenzene chromophores was investigated by ultraviolet spectrophotometery in chloroform solvent at the various temperature. In addition, Reversibility and stability of azo compounds have been measured by means of Ultraviolet and the structure of these compound were ascertained by means of FT-IR and NMR. Recrystallization of reaction product in the solvent results the experimental yield obtained about 62.93% p-(p'-octadecyloxy phenyl azo)-benzoic acid. Long chain azobenzene derivatives in chloroform solution are induced photoisomerization by u. v. and visible light irradiation. The solution of long chain fatty acids(Cn-Azo) containing azobenzene are possible of being applied to functional molecular devices such as photomemory and light switching.
        4,000원
        8.
        2017.10 KCI 등재 서비스 종료(열람 제한)
        최신 영상 기법인 MAGiC sequence의 RF coil channel 수 변화에 따른 T1, T2 이완 시간 및 T1, T2 이완율 을 측정하여 분석하였고 그에 따른 재현성을 평가하였다. Channel 수가 각각 (1, 8, 16, 32)channel 인 RF coi l에 조영제 phantom(1.0, 0.6, 0.2, 0mM)을 위치시키고 MAGiC sequence를 이용하여 T1, T2, R1, R2 map을 획 득하였다. 그리고 각각의 channel 수와 농도별로 T1, T2, R1, R2 value 그리고 relaxation rate를 측정하였고 이를 기반으로 각 농도에 따른 Relaxivity를 구하였다. 각각의 coil에서 T1, T2, R1, R2 value를 측정한 결과 T1, R1 value는 coil간의 유의한 차이가 없었다(p>0.05). 하지만 T2, R2 value는 유의한 차이가 있는 것으로 나타났다(p<0.05). 사후분석 결과에서는 T2 value의 경우 1 channel coil에서 측정한 결과가 8, 16, 32 channel coil에서 측정한 결과와 유의한 차이가 나타났고(p<0.05) 8, 16, 32 channel coil간의 차이는 나타나지 않았다 (p>0.05). R2 value의 경우도 마찬가지로 1 channel coil에서 측정한 결과가 8, 16, 32 channel coil에서 측정한 결과와 유의한 차이가 나타났으며 또한 8 channel coil에서 측정한 결과와 16 channel coil에서 측정한 결과 가 유의한 차이가 나타났다(p<0.05). 결론적으로 T1, R1 value는 coil의 channel 수 변화에 따른 차이가 크지 않지만 T2, R2 value는 큰 차이를 나타냈다. 따라서 MAGiC sequence를 이용하여 T2, R2 value를 정량적으로 측정할 경우 재현성을 위해 동일한 channel 수의 coil을 사용해야 할 것으로 사료된다.
        9.
        2012.04 KCI 등재 서비스 종료(열람 제한)
        간담도암의 일차적 치료법은 수술적 제거이나, 초기 병기로 수술을 하여도 재발이 흔하며, 재발 후에는 근치적 목적이 아닌 주로 증상 완화 목적의 치료를 하고 있다. 이에 본 연구에서는 재발한 환자에서 자체 도입한 특수 관을 이용한근치적 목적의 high-dose-rate intraluminal brachytherapy의 치료법과 치료 set-up 재현성 유지에 대하여 고찰하고자 한다. 본 연구는 간담도암으로 수술 후, 6개월 간격으로 복부 자기 공명 영상을 이용한 추적 검사를 시행하여, 수술문합 부위의 재발이 확인된 임상 병기 rcT1N0M0인 환자를 대상으로 하였다. 근접 치료를 위하여 경피적 담도 배액관을 치료 전용관인 Arrow Sheath로 교체 후, intraluminal catheter를 삽입하여, 일회 치료당 3 Gy 씩 총 30 Gy 근접치료를 시행하였다. 협착 된 담도의 distal and proximal 그리고 central axis point로부터 1 cm 떨어진 지점을 선량표준화였으며, 5회에 걸쳐 치료 전 dummy seed 삽입 후, 치료 표적 용적 근위부와 말단부의 기준점에서 흉추 사이의 거리를 측정하여 set-up 재현성을 평가하였다. 매주 치료 전 근위부와 말단부위 치료 표적 용적 기준점에서 흉추 사이의거리를 5회 측정한 값과 simulation image에서 측정된 거리를 비교한 결과 평균값과 표준편차가 오차율 5% 이내로 유의한 수준으로 측정되어 매회 치료시 재현성이 유지 되었다, 본 연구 환자의 추적 검사 상 1년 이상 무병 생존하고 있으며, 심각한 부작용 또한 관찰되지 않았다. 따라서, 수술이 불가능한 재발한 간담도암 환자에서 본원에서 자체 도입한관으로 시행한 근접치료는 주변 인접 장기의 심각한 부작용 발생 없이, 매 회 치료 시 재현성이 유의한 수준으로 유지되는 것으로 평가되었다.