期刊文献+
共找到4篇文章
< 1 >
每页显示 20 50 100
Real-Time Tunable Gas Sensing Platform Based on SnO_(2) Nanoparticles Activated by Blue Micro-Light-Emitting Diodes
1
作者 Gi Baek Nam Jung-El Ryu +25 位作者 Tae Hoon Eom Seung Ju Kim Jun Min Suh Seungmin Lee sungkyun choi Cheon Woo Moon Seon Ju Park Soo Min Lee Byungsoo Kim sung Hyuk Park Jin Wook Yang Sangjin Min Sohyeon Park sung hwan cho Hyuk Jin Kim Sang Eon Jun Tae Hyung Lee Yeong Jae Kim Jae Young Kim Young Joon Hong Jong-In Shim Hyung-Gi Byun Yongjo Park Inkyu Park Sang-Wan Ryu Ho Won Jang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第12期103-119,共17页
Micro-light-emitting diodes(μLEDs)have gained significant interest as an activation source for gas sensors owing to their advantages,including room temperature operation and low power consumption.However,despite thes... Micro-light-emitting diodes(μLEDs)have gained significant interest as an activation source for gas sensors owing to their advantages,including room temperature operation and low power consumption.However,despite these benefits,challenges still exist such as a limited range of detectable gases and slow response.In this study,we present a blueμLED-integrated light-activated gas sensor array based on SnO_(2)nanoparticles(NPs)that exhibit excellent sensitivity,tunable selectivity,and rapid detection with micro-watt level power consumption.The optimal power forμLED is observed at the highest gas response,supported by finite-difference time-domain simulation.Additionally,we first report the visible light-activated selective detection of reducing gases using noble metal-decorated SnO_(2)NPs.The noble metals induce catalytic interaction with reducing gases,clearly distinguishing NH3,H2,and C2H5OH.Real-time gas monitoring based on a fully hardwareimplemented light-activated sensing array was demonstrated,opening up new avenues for advancements in light-activated electronic nose technologies. 展开更多
关键词 Micro-LED Gas sensor array Low power consumption Metal decoration Real-time detection
下载PDF
HIGHLIGHTS OF SPEECHES
2
作者 sung hwan cho Sergio Mujica +2 位作者 Marcos Athias Neto Jo Cops Seizo Onoe 《China Standardization》 2024年第6期50-52,共3页
This week promises a rich variety of thought-provoking sessions,covering emerging trends,global challenges and future opportunities.Inspiring speakers from across business,government,public,and private sectors spark p... This week promises a rich variety of thought-provoking sessions,covering emerging trends,global challenges and future opportunities.Inspiring speakers from across business,government,public,and private sectors spark passionate discussions and debates.I hope that like me,you are also excited at the prospect of encountering fresh ideas,opinions,and perspectives,and are ready to consider the role of standards in achieving the 2030 Agenda for Sustainable Development. 展开更多
关键词 SPEAKERS discussions COVERING
下载PDF
Association between hepatocellular carcinoma and tumor necrosis factor alpha polymorphisms in South Korea 被引量:5
3
作者 Suk Pyo Shin Nam Keun Kim +7 位作者 Ju hwan Kim Ju Ho Lee Jung Oh Kim sung hwan cho Hana Park Mi Na Kim Kyu sung Rim Seong Gyu hwang 《World Journal of Gastroenterology》 SCIE CAS 2015年第46期13064-13072,共9页
AIM: To investigate associations between the tumor necrosis factor alpha(TNF-α)-1031 T>C,-863 C>A,-857 C>T,-308 G>A,and-238 G>A polymorphisms and HCC in Korea.METHODS: Hepatocellular carcinoma(HCC) cas... AIM: To investigate associations between the tumor necrosis factor alpha(TNF-α)-1031 T>C,-863 C>A,-857 C>T,-308 G>A,and-238 G>A polymorphisms and HCC in Korea.METHODS: Hepatocellular carcinoma(HCC) cases were diagnosed at CHA Bundang Medical Center from June 1996 to August 2008. The association between TNF-α polymorphisms and HCC was analyzed in 157HCC patients and 201 controls using a polymerase chain reaction-restriction fragment length polymorphism assay. We investigated five TNF-α polymorphisms,which are TNF-α-1031 T>C,-863 C>A,-857 C>T,-308 G>A,and-238 G>A. The TNF-α genotype frequencies,genotype combinations and haplotypes were analyzed to disclose the association with HCC.RESULTS: None of the TNF-α polymorphisms was significantly associated with HCC. However,nine genotype combinations had associations with increased likelihood of HCC. Among them,TNF-α-1031/-857/-238 TT/CC/GA(AOR = 18.849,95%CI: 2.203-161.246,P = 0.007),TNF-α-1031/-308/-238 TT/GG/GA(AOR = 26.956,95%CI: 3.071-236.584,P = 0.003),and TNF-α-1031/-238 TT/GA(AOR = 21.576,95%CI: 2.581-180.394,P = 0.005) showed marked association with HCC. There were five haplotypes of TNF-α polymorphisms which were significantly associated with HCC. They are TNF-α-1031/-863/-857/-308/-238 T-C-C-G-A(OR = 25.824,95%CI: 1.491-447.223,P = 0.0005),TNF-α-1031/-857/-308/-238 T-C-G-A(OR = 12.059,95%CI: 2.747-52.950,P < 0.0001),TNF-α-1031/-857/-238 T-C-A(OR = 10.696,95%CI: 2.428-47.110,P = 0.0001),TNF-α-1031/-308/-238 T-G-A(OR = 7.556,95%CI: 2.173-26.280,P = 0.0002) and TNF-α-1031/-238 T-A(OR = 10.865,95%CI: 2.473-47.740,P = 0.0001). Moreover,HCC Okuda stage Ⅲ cases with the TNF-α-1031 CC genotype had better survival than those with the TT genotype(AOR = 5.795,95%CI: 1.145-29.323). CONCLUSION: Although no single TNF-α polymorphism is associated with HCC in this study,some TNF-α genotype combinations and haplotypes are associated with HCC. In addition,HCC Okuda stage Ⅲ cases with the TNF-α-1031 TT genotype may have a better prognosis than those with the CC genotype. 展开更多
关键词 Tumor NECROSIS FACTOR-ALPHA POLYMORPHISM Single NU
下载PDF
Growth of BaTiO_3-Ag hybrid composite films at room temperature by aerosol deposition 被引量:2
4
作者 Young Joon YOON sung hwan cho +3 位作者 Jihoon KIM Hyo Tae KIM Hong Koo BAIK Jong-Hee KIM 《中国有色金属学会会刊:英文版》 CSCD 2012年第S3期735-739,共5页
Barium titanate (BaTiO3) and silver (Ag) composite film with high dielectric constant was grown at room temperature by an aerosol deposition method.The dielectric constant increases by 0.5 times after adding Ag to the... Barium titanate (BaTiO3) and silver (Ag) composite film with high dielectric constant was grown at room temperature by an aerosol deposition method.The dielectric constant increases by 0.5 times after adding Ag to the BaTiO3 matrix,compared with pure BaTiO3.The high dielectric constant can be attributed to the percolation effect of Ag inclusions in the BaTiO3 matrix.The Ag was present in the form of discrete layer in the BaTiO3 film.The dielectric properties of BaTiO3 Ag were discussed in detail taking into account the changes in microstructures. 展开更多
关键词 composites PERCOLATION aerosol deposition BATIO3 AG
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部