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991.
Jang Yong Kim Sungsu Park Pruthvi Serrao 《Journal of Mechanical Science and Technology》2020,34(6):2371-2376
The purpose of this study is to contribute to the design and development by analyzing the expected mechanical behavior of bioresorbable scaffolds. Bioresor 相似文献
992.
993.
Donghyun Hwang Hana Lee Jinho Lee Minjoo Lee Seungkwan Cho Tackjoong Kim Hansung Kim 《International journal of molecular sciences》2021,22(9)
Recently, a variety of safe and effective non-pharmacological methods have been introduced as new treatments of alopecia. Micro-current electrical stimulation (MCS) is one of them. It is generally known to facilitate cell proliferation and differentiation and promote cell migration and ATP synthesis. This study aimed to investigate the hair growth-promoting effect of MCS on human hair follicle-derived papilla cells (HFDPC) and a telogenic mice model. We examined changes in cell proliferation, migration, and cell cycle progression with MCS-applied HFDPC. The changes of expression of the cell cycle regulatory proteins, molecules related to the PI3K/AKT/mTOR/Fox01 pathway and Wnt/β-catenin pathway were also examined by immunoblotting. Subsequently, we evaluated the various growth factors in developing hair follicles by RT-PCR in MCS-applied (MCS) mice model. From the results, the MCS-applied groups with specific levels showed effects on HFDPC proliferation and migration and promoted cell cycle progression and the expression of cell cycle-related proteins. Moreover, these levels significantly activated the Wnt/β-catenin pathway and PI3K/AKT/mTOR/Fox01 pathway. Various growth factors in developing hair follicles, including Wnts, FGFs, IGF-1, and VEGF-B except for VEGF-A, significantly increased in MCS-applied mice. Our results may confirm that MCS has hair growth-promoting effect on HFDPC as well as telogenic mice model, suggesting a potential treatment strategy for alopecia. 相似文献
994.
Minsu Han Byeonggwan Kim Hanwhuy Lim Hwandong Jang Eunkyoung Kim 《Advanced materials (Deerfield Beach, Fla.)》2020,32(1):1905096
While numerous near-infrared (NIR) materials have emerged, most of them are strongly colored or black due to the absorption band or tails in the visible region. Here, a highly transparent and soluble NIR-absorbing ionic salt, isobutyl-substituted diimmonium borate (IDI), is synthesized and fabricated, through a solution process, as a thin film that shows a transmittance of over 93% in the whole visible region. A transparent photothermal (PT) film heater is fabricated with the IDI-doped polymer solution, which shows a photothermal conversion efficiency (ηPT) of 75.2%. Additionally, the prepared PT heater shows a high water evaporation conversion efficiency (ηw) of 68.8% upon exposure to a 1064 nm laser. Furthermore, the transparent IDI film affords the development of a wireless transparent actuator for the first time, generating a bending angle over 75°, with over 2700 bending cycles. The transparent IDI film creates a hot transparent Venus flytrap and a colorful or fluorescent actuator upon the addition of colorants without losing the actuation properties. 相似文献
995.
Jang Gyeong Uk Kim Chang-Wan Bae Daesung Cho Younghoon Lee Jeong-Jong Cho Seunghyeon 《Journal of Mechanical Science and Technology》2020,34(3):1249-1256
Journal of Mechanical Science and Technology - This study performed reliability-based robust design optimization (RBRDO) of stator and rotor shape of the IPM type electric motor to reduce the... 相似文献
996.
997.
Neri Therese Ariane N. Jung Hyun-Chol Jang Se-Kyeong Kang Seok-Joong Choi Byeong-Dae 《Food science and biotechnology》2021,30(5):643-652
Food Science and Biotechnology - This study explored the potential of using hybrid pump dryer (HPD) to utilize overproduction in aquaculture of oysters, especially during winter. HPD-dried oysters... 相似文献
998.
Abstract A study was made of the electrohydrodynamic (EHD) effect on the water evaporation rate of a channel flow with a needle-arrayed electrode system using both numerical and experimental methods. The local charged density, flow, and concentration distributions and their growth along the flow stream of a rectangular channel were described in detail. The results showed that the EHD effect on the evaporation rate increased with increases in applied voltage and electrode pitch and decreased in electrode height. For example, at an applied voltage of 16?kV, the mass transfer enhancement was 1.5 times than that of the electrode pitch from 50 to 100?mm at an electrode height of 20?mm. The mass transfer enhancement was twice as great for electrode height from 20 to 15?mm at an applied voltage of 12?kV and pitch of 100?mm. The present needle-arrayed electrode system results were compared with a five-wire electrode system based on the same geometric model and boundary conditions. It was concluded that the needle electrode cases achieved better mass transfer gains than the wire electrode cases for the present evaluated cases. Finally, the numerical results obtained satisfactory consistency with experimental data with a maximum error of 25%. 相似文献
999.
Kuk-Jin Hwang Mi Jang Min Kyu Kim Seok Hee Lee Tae Ho Shin 《Journal of the European Ceramic Society》2021,41(4):2674-2681
Solid oxide fuel cells (SOFCs) have been gaining increased attention in the energy sector. Commonly, yttria-stabilized zirconia is widely employed as commercial electrolyte, however, resulted in drawbacks such as high-temperature operating and low conductivity which negatively affect the durability and efficiency. Thus there are many efforts to find high-ionic conductors. From the point of manufacturing, the major difficulty of LaGaO3-based electrolyte as a high-ionic conductor is its incompatibility with commercial Ni-based anodes during high-temperature processes as well as operating. Several interlayers have been introduced to prevent the reaction between LaGaO3-based electrolyte and Ni-based anode. In this study, we investigate the optimal thickness of the La-doped CeO2 (LDC) interlayer by the screen-printing method using La0.9Sr0.1Ga0.8Mg0.2O3-δ for the commercial electrolyte supported SOFCs. As a result, the superior power performance of 2.2 W·cm?2 at 1123 K is achieved through the optimized LDC thickness of 20 μm through not lab-scaled but commercial ceramic manufacturing processing. 相似文献
1000.
Ahrong Jeong Koichiro Suekuni Michitaka Ohtaki Byung-Koog Jang 《Ceramics International》2021,47(17):23927-23934
In this study, indium (In)- and gallium (Ga)-doped zinc oxide (ZnO) ceramics, [Zn(1?x?y)GaxIny]O (x = 0, 0.02; y = 0, 0.005, 0.01, 0.02), were fabricated via spark plasma sintering (SPS) at 1423 K. Crystal structure and microstructural analyses were conducted to confirm the solubility of the dopants and understand the correlations between the crystallographic phases and the various compositions. It was confirmed that the solubility of Ga (x = 0.02; y = 0.005) was promoted by doping with In and Ga, and the highest power factor of 0.99 mW K?2 m?1 was acquired at 1046 K. Furthermore, the thermal conductivity at 340–530 K was reduced by doping with In and Ga. 相似文献