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Hong, Gyu Ri,Lee, Sun Sook,Park, Hye Jin,Jo, Yejin,Kim, Ju Young,Lee, Hoi Sung,Kang, Yun Chan,Ryu, Beyong-Hwan,Song, Aeran,Chung, Kwun-Bum,Choi, Youngmin,Jeong, Sunho American Chemical Society 2017 ACS APPLIED MATERIALS & INTERFACES Vol.9 No.16
<P>In recent decades, solution-processable, printable oxide thin-film transistors have garnered a tremendous amount of attention given their potential for use in low-cost, large-area electronics. However, printable metallic source/drain electrodes undergo undesirable electrical/thermal migration at an interfacial stack of the oxide semiconductor and metal electrode. In this study, we report oleic acid-capped Ag nanoparticles that effectively suppress the significant Ag migration and facilitate high field-effect mobilities in oxide transistors. The origin of the role of surface-capped Ag nanoparticles is clarified with comparative studies based on X-ray photoelectron spectroscopy and X-ray absorption spectroscopy.</P>
Hong, Gyu Ri,Lee, Sun Sook,Jo, Yejin,Choi, Min Jun,Kang, Yun Chan,Ryu, Beyong-Hwan,Chung, Kwun-Bum,Choi, Youngmin,Jeong, Sunho American Chemical Society 2016 ACS APPLIED MATERIALS & INTERFACES Vol.8 No.44
<P>In this study, we report for the first time a simple bar-coating process of soluble metal oxide semiconductors, consuming the 0.1 g of precursor solution in 4 in. sized devices with a cost of only $0.05. To resolve the issue of critical degradation in device performance observable in slow-evaporation-based film formation processes, we incorporate the unprecedentedly developed, poly(acrylic acid)-decorated multiwalled carbon nanotubes (MWNTs) in oxide semiconductors. It is demonstrated that a field-effect mobility is improved to the value of 7.34 cm(2)/(V s) (improvement by a factor of 2) without any critical variation in threshold voltage and on/off current ratio.</P>
Hong, Soung Kyun,Park, Su Ho,Shin, Sung Ri,Lee, Dong Geon,Lee, Seung Hoo,Jung, Sun Hye,Pyo, Seung Hyeon,Lee, Kyeong-Bong,Lee, Gyu Chang korean Academy of Physical Therapy Rehabilitation 2018 Physical therapy rehabilitation science Vol.7 No.1
Objective: The purpose of this study was to investigate the impact of wearing various types of shoes on gait ability in stroke survivors and in order to gain information in regards to shoes that could possibly replace ankle orthosis. Design: Cross-sectional study. Methods: Eight hemiplegic survivors diagnosed with stroke participated in the study. Gait was analyzed using the GAITRite Electronic Walkway (CIR System Inc., USA) when subjects walked with no showed, walked with non-ankle-covered shoes, and walked with ankle-covered shoes. This study collected gait variables, including velocity, cadence, step length, stride length, single support time, and double support time, respectively. Results: In the comparison of walking with no shoes, non-ankle-covered shoes, and ankle-covered shoes, there were significant differences in gait velocity, step length, stride length, and the less affected side single support time (p<0.05). However, there were no significant differences in cadence, affected side single support time, and double support time. Conclusions: Ankle-covered shoes had a positive impact on the gait of stroke survivors. However, it is necessary to conduct more studies comparing various types of shoes with ankle orthoses.
천식과 아토피피부염 환자에서 D. farinae 특이 IgE 결합 양상의 차이
김규리 ( Gyu Ri Kim ),김민환 ( Min Hwan Kim ),최수영 ( Soo Young Choi ),이용원 ( Yong Won Lee ),박중원 ( Jung Won Park ),홍천수 ( Chein Soo Hong ) 대한천식알레르기학회 2008 천식 및 알레르기 Vol.28 No.3
Background: Dermatophagoides farinae (D. farinae) has various isoallergens. However, allergenic differences between bronchial asthmatics (BA) and atopic dermatitis (AD) patients have not yet been fully evaluated. Objective: To investigate the differences in D. farinae specific IgE between BA and AD patients sensitized to D. farinae. Method: Five BA and five AD patients sensitized to D. farinae were measured in this study. D. farinae-specific IgE was evaluated by 1-dimensional (1-D) and 2-dimensional (2-D) SDS-PAGE, and IgE immunoblotting. N-terminal sequencing was performed for the identification of the allergens. Result: Two-D IgE immunoblot revealed the 7 allergens with 14 kDa at PI 5.5 to 6.5. These allergens were found in 4, BA and 2 AD patients. Another allergen with 25 kDa at pI 7.8 was found only in 4 BA patients. This allergen was regarded as triosephosphate isomerase by N-terminal sequencing. Conclusion: Seven allergens with 14 kDa at pI 5.5 to 6.5 and 1 allergen with 25 kDa at pI 7.8 were identified more frequently in BA than in AD patients. The 25 kDa allergen was regarded as triosephosphate isomerase, and it might be associated with the development of asthma. (Korean J Asthma Allergy Clin Immunol 2008;28:199-204)
Myoung Gyu Ha,Kyoung-Rim Han,Ju Sung Kim,Yu Ri Bae,김종필,배종성,K. S. Hong,양호순 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.64 No.4
The effects of incorporated alkali metal ions on the chemical bonding states and optical propertiesin samarium-doped strontium orthosilicate phosphors are studied. Sr2−xMxSiO4:Sm3+ (M = Li, Na,and K) phosphors are synthesized by using tje solid-state reaction method to vary the incorporatedamount of the alkali metal ions. The structures, surface morphology, and chemical bonding states ofthe powders are analyzed. Optical properties for varying amounts of incorporated alkali metal ionsare examined by measuring absorption, excitation, and emission spectra. A red-orange emission dueto the transition of Sm3+ is observed in all samples, and powders with alkali metal ions incorporatedexhibit enhanced emission intensities by a factor of 1.24 to 2.16 compared with that of z pureSr2SiO4:Sm3+ powder with the same amount of Sm3+. We have shown that Sr2−xMxSiO4:Sm3+ceramics exhibit a red-orange emission with enhanced intensity for operation with near ultra-violetexcitation.
Kim, Yu-Ri,Kim, Ki-Nam,Shim, Boo-Im,Lee, Seung-Min,Kim, In-Kyoung,Sohn, Sung-Hwa,Park, Myung-Gyu,Park, Hong-Suk,Kim, Meyoung-Kon The Korean Society of Toxicogenomics and Toxicopro 2007 Molecular & cellular toxicology Vol.3 No.2
Zinc is essential metal and plays a role in a wide variety of physiological and biochemical processes. Prostate gland contains high level of zinc, generally 3-10 folds higher than other organs. Prostatic zinc uptake is resulted from the existence of zinc transporter (ZnT) protein families in membrane. In this study, we investigated the difference of zinc uptake efficiency of zinc-aspartate complex (Zn-Asp) into various organs compared with $ZnSO_4$. We observed that Plasma zinc concentration in both $ZnSO_4$ and Zn-Asp administrated group was increased progressively following administration, and reached a peak level at 2 hr. The increasing pattern of zinc concentration was similar to each groups, however the zinc concentration of Zn-Asp administrated group was higher than that of $ZnSO_4$ administrated group. We found that prostatic zinc level of Zn-Asp administrated group was higher than $ZnSO_4$ administrated group, and was increased approximately $\sim$2.7 fold and $\sim$4.2 fold at 4 and 8 hr after administration. From these observations, we suggest than Zn-Asp has high uptake efficiency of zinc into the prostate gland. Therefore, Zn-Asp is potentially useful treatment of many prostatic diseases.