http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Im, Kyungmin,Heo, Jin Hyuck,Im, Sang Hyuk,Kim, Jinsoo Elsevier 2017 Chemical Engineering Journal Vol. No.
<P><B>Abstract</B></P> <P>Ti doped MoO<SUB>2</SUB> nanoparticles with high BET surface area of 135m<SUP>2</SUP>/g were synthesized via scalable solvothermal cracking of polycrystalline MoO<SUB>3</SUB> microparticles prepared by ultrasonic spray pyrolysis. The pristine MoO<SUB>2</SUB> and Ti doped MoO<SUB>2</SUB> nanoparticles showed metallic conductivity, whereas the MoO<SUB>3</SUB> microparticles had semi-conducting behavior. In addition, the Ti doping in MoO<SUB>2</SUB> nanoparticles formed stronger MoO bond than the pristine MoO<SUB>2</SUB> and consequently exhibited improved stability against humidity. Accordingly, the p-i-n type planar CH<SUB>3</SUB>NH<SUB>3</SUB>PbI<SUB>3</SUB> perovskite solar cells with Ti doped MoO<SUB>2</SUB> inorganic hole transporting material showed 15.8% of power conversion efficiency at 1 Sun condition (100mW/cm<SUP>2</SUP>) and significantly improved humidity stability.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Highly stable Ti-doped MoO<SUB>2</SUB> nanoparticles were synthesized by solvo-thermal cracking process. </LI> <LI> The p-type Ti-doped MoO<SUB>2</SUB> was used to hole transporting materials for perovskite solar cells. </LI> <LI> The stability of CH<SUB>3</SUB>NH<SUB>3</SUB>PbI<SUB>3</SUB> perovskite solar cell was enhanced. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Hyeonyeong Im,Ji-Hyun Park,Seowoo Im,Juhyeong Han,Kyungmin Kim,이윤희 대한약학회 2021 Archives of Pharmacal Research Vol.44 No.2
The high incidence of obesity has increased theneed to discover new therapeutic targets to combat obesityand obesity-related metabolic diseases. Obesity is defi ned asan abnormal accumulation of adipose tissue, which is one ofthe major metabolic organs that regulate energy homeostasis. However, there are currently no approved anti-obesitytherapeutics that directly target adipose tissue metabolism. With recent advances in the understanding of adipose tissuebiology, molecular mechanisms involved in brown adiposetissue expansion and metabolic activation have been investigatedas potential therapeutic targets to increase energyexpenditure. This review focuses on G-protein coupledreceptors (GPCRs) as they are the most successful class ofdruggable targets in human diseases and have an importantrole in regulating adipose tissue metabolism. We summarizerecent fi ndings on the major GPCR classes that regulatethermogenesis and mitochondrial metabolism in adipose tissue. Improved understanding of GPCR signaling pathwaysthat regulate these processes could facilitate the developmentof novel pharmacological approaches to treat obesityand related metabolic disorders.
Bkour, Qusay,Im, Kyungmin,Marin-Flores, Oscar G.,Norton, M. Grant,Ha, Su,Kim, Jinsoo Elsevier 2018 Applied Catalysis A Vol.553 No.-
<P><B>Abstract</B></P> <P>The present investigation is focused on improving the performance of molybdenum dioxide (MoO<SUB>2</SUB>) by doping with Ti for the partial oxidation (POX) of <I>n</I>-dodecane. Ti-doped MoO<SUB>2</SUB> nanoparticles were synthesized via solvothermal cracking of polycrystalline MoO<SUB>3</SUB> microparticles prepared by ultrasonic spray pyrolysis in the presence of a Ti precursor. Partial oxidation of <I>n</I>-dodecane was conducted at 850 °C with an O<SUB>2</SUB>/C ratio of 0.5. The 6 at% Ti-doped MoO<SUB>2</SUB> was fully converted into orthorhombic carbide phase (β-Mo<SUB>2</SUB>C) during the reaction. This carbide sample showed high catalytic activity and stability with conversion and H<SUB>2</SUB> yield of 94.4% and 86.3% after 24 h on stream, respectively. On the other hand, un-doped MoO<SUB>2</SUB> was partially converted into the carbide phase during the reaction, which led to mixed oxide and carbide phases. This mixed phase showed poor catalytic activity and rapid deactivation after only 6 h of operation. Our ammonia temperature programmed desorption (TPD) and pyridine diffuse reflectance infrared Fourier transform (DRIFT) tests suggest that the addition of Ti to MoO<SUB>2</SUB> improves both the density and strength of Lewis acid sites, and hence improves hydrocarbon activation. This increased surface carbon activation would enhance the carburization process of the Ti-doped MoO<SUB>2</SUB> catalyst and retain the carbide phase under the POX condition.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ti-doped MoO<SUB>2</SUB> nanoparticles were synthesized by solvo-thermal cracking process. </LI> <LI> The addition of Ti into MoO<SUB>2</SUB> improves the density and strength of Lewis acid sites. </LI> <LI> Ti doping plays an important role in the carburization of MoO<SUB>2</SUB> and keeps the β-Mo<SUB>2</SUB>C phase during the reforming reaction. </LI> <LI> Ti-doped MoO<SUB>2</SUB> that fully converted into carbide showed a high catalytic activity and stability toward POX of <I>n</I>-dodecane. </LI> <LI> Un-doped MoO<SUB>2</SUB> showed mixture of MoO<SUB>2</SUB> and Mo<SUB>2</SUB>C with rapid deactivation during POX of <I>n</I>-dodecane. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
김민수 ( Minsu Kim ),부경민 ( Kyungmin Boo ),임경덕 ( Kyungduk Im ),고성보 ( Seong Bo Ko ),김성백 ( Seong Baeg Kim ) 한국정보처리학회 2010 한국정보처리학회 학술대회논문집 Vol.17 No.2
지난 몇 년 동안 인터넷을 비롯한 각종 미디어 산업에서 사용자가 직접 제작한 콘텐츠라는 의미를 지닌 UCC(User Created Content)가 주목을 받았다. UCC는 사용자가 직접 이미지, 비디오 등의 형태로 제작한 콘텐츠를 말하는데, 이러한 UCC는 인터넷의 발달과 함께 크게 성장하게 되었으며 이제는 단순한 미디어나 콘텐츠로서가 아닌 하나의 산업으로 인정받기 시작했다. 또한 사용자와의 상호작용성과 체험적 형태를 지닌 상호작용 UCC가 등장함에 따라 이제는 UCC는 우리 생활과 밀접한 연관을 가진다고 할 수 있다. 이에 본 논문에서는 최근 들어 각광을 받고 있는 스마트폰을 활용하여 스마트폰과 상호작용 UCC와의 융합적 접근으로 스마트폰 터치스크린 안에서의 체험형 UCC를 어떻게 제작할 것인지를 알아본다. 기존의 컴퓨터의 모니터를 통해서만 상호작용이 가능하였던 점에서 탈피하여 공간적 제약을 극복하고 누구나 쉽게 이용할 수 있도록 기존 UCC와 새로운 스마트폰 터치스크린의 정보 기술과의 효과적인 융합에 초점을 맞추고자 한다. 그 동안의 UCC 파급효과를 보았듯이 UCC는 남녀노소 누구나 손쉽게 즐길 수 있다. 이러한 UCC가 최근 주목을 받고 있고, 사용자수가 급증하고 있는 터치스크린 기반의 스마트폰을 통해서 다시 한 번 UCC 시장에 활기를 불어넣을 수 있는 방안을 제시한다. 또한 상호작용 UCC를 통해서 기존의 UCC 매체인 모니터를 이용하여 전달하고자 하는 것보다, 스마트폰의 장점과 강력한 특징인 터치스크린을 잘 살려 스마트폰을 통해 보다 효율적으로 전달할 수 있는 방안을 제시한다.
계면 분리와 고분자 기지 데미지 현상을 고려한 CNT/고분자 나노복합재의 기계적·전기적 거동에 대한 멀티스케일 해석
이원석(Wonseok Lee),백경민(Kyungmin Baek),정인균(Ingyun Chung),임선영(Sunyoung Im),조맹효(Maenghyo Cho) 대한기계학회 2019 대한기계학회 춘추학술대회 Vol.2019 No.11
In this study, a multiscale analysis is conducted to investigate the electrical and mechanical behavior of carbon nanotube (CNT)-polymer nanocomposites considering matrix damage and interfacial debonding with computational micromechanics. CNT-polymer nanocomposites exhibit piezoresistive response which is the effect that the resistivity is changed when subjected to applied deformation. Mechanical and electrical properties are degraded by polymer matrix damage and interfacial debonding phenomenon which occur inevitably when nanocomposites are applied deformation. In order to describe polymer matrix damage representing void nucleation, disentanglement and eventual breakage of polymer chain, we use Christensen’s failure criteria and phenomenological damage law. Interfacial debonding is described by the electromechanical cohesive zone where the interface between CNT and polymer is separated. We identify that the the stress distribution between the debonding model and the perfectly bonded model is clearly different. This difference causes the opposite matrix damage behavior, which in turn affect the changes of electrical and mechanical properties.