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브릴루앙 산란실험을 이용한 단결정 PbMoO₄의 탄성계수 측정
박주일,이석목,유윤식,김성칠 동의대학교 기초과학연구소 1997 基礎科學硏究論文集 Vol.7 No.1
We have performed Brillouin scattering experiments to investigate the elastic properties of tetragonal symmetry single crystal PbMoO₄. and could determine the value of birefringence as well as the whole elastic constants. As a result, c_11=111.4±4.4, c_12=64.7±3.4, c_44=27.0±0.8, c_13=51.9±2.5, c_33=95.5±1.9, c_66=34.5±4.6 and c_16=15.8±1.2 (×10^9 N/m²) and n_0-n_e=0.151±0.018 .
A Case Report on a Severe Anaphylaxis Reaction to Gadolinium-Based MR Contrast Media
박주일,김태형,박창민,윤순호,이활,강혜련,최영훈 대한영상의학회 2017 대한영상의학회지 Vol.76 No.2
Acute hypersensitivity reactions to gadolinium-based magnetic resonance (MR) contrast media have been shown to have a much lower incidence and they are generally milder in terms of severity than acute adverse reactions associated with the use of iodinated contrast media for computed tomography scans. However, even though it is rare, a severe hypersensitivity reaction to MR contrast media can occur. Here we present the case of a 66-year-old woman who experienced a severe hypersensitivity reaction after administration of gadolinium-based contrast media without a previous history of allergies.
Hydroconversion of Model Light Cycle Oil over Alumina Coated Zeolite
박주일,전민석,정회경 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1
Hydro-conversion reactions were carried out at the given condition to study ring opening reactions of 1-methyl naphthalene using NiMoS supported on gamma alumina and alumina-coated/mixed USY zeolites. NMACZ-2 showed enhanced reactivity for HC and produced (alkyl) benzenes with the highest yield. The tetralin species produced using NMACZ-2 moved into the alumina-coated USY zeolite support before undergoing HYD to produce decalin species, which were rapidly and selectively hydro-cracked into (alkyl)benzenes. A large amount of decalin was produced through the HYD of tetralin without significant cracking. Bulk phase Mo oxide species on NMAZ, as well as deactivation of the catalysts due to coke formation over the naked zeolite surface, inhibited the ring opening of tetralin, decreasing the yield of (alkyl)benzene.