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Fe-17%Cr 페라이트계 나노사이즈-산화물 분산강화합금의 인장성질과 고온산화에 미치는 산화물종의 영향
김익수,강창룡,이종문,이병우,정상훈,이원희 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.12
In order to develop mechanically alloyed nano-sized ferritic ODS alloys, we have investigated the effect of three kinds of oxide such as Y₂O₃, Al₂O₃ and TiO₂, on the high temperature tensile properties, high temperature oxidation behavior and corrosion resistance. Due to the most distribution of fine and spherical particles, ODS alloys containing Y₂O₃ raise yield strength and tensile strength at high temperatures considerably. The results of high temperature oxidation tests indicate that the ODS alloys containing Y₂O₃, Al₂O₃ and TiO₂ are resistant to oxidation between 823K and 1023K. The ODS alloy containing Y2O3 by attributed by to thermal safety of Y₂O₃ showed an ecellent characteristics in oxidation and corrosion.
위 MALT 림프종에서 다발성 림프절 전이로 오인된 동시성 림프절 결핵 1예
김성은,김규종,김도현,송준영,문대성,장리라,유찬희,문원,박무인,박선자,김영옥 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.2
28세 남자가 내시경적 점막절제술을 통해 저등급 위MALT 림프종으로 진단되었다. 병기설정을 위해 18F-FDG PET 검사를 시행하였고 우측 쇄골상부, 우측상/하부 기관주위, AP window 부위에 강한 섭취가 관찰되어 전이성 림프절로 판단하였다. 그러나, 우측 쇄골상부 림프절에서 시행한 절제생검에서 만성육아종성염증소견이 관찰되었고 조직의 결핵 중합효소연쇄반응에서도 양성 반응을 보였다. 2개월간 항결핵제의 사용 후 시행한 추적 컴퓨터단층촬영 검사에서 림프절 크기의 감소를 보여 최종적으로 위 MALT 림프종에서 광범위 림프절 전이로 오인된 동시성 림프절 결핵으로 진단되었다. A 28-year-old man was diagnosed as gastric MALT lymphoma in diagnostic EMR (endoscopic mucosal resection). He subsequently underwent an 18F-FDG PET. 18F-FDG PET showed intense multifocal uptake in right supraclavicular, right upper and lower paratracheal, and AP window areas that was considered radiologically to represent widespread metastatic lymphadenopathy. Excisional biopsy of a supraclavicular lymph node, however, revealed chronic granulomatous lymphadenitis with a positive reaction of Tb-nested PCR. After antituberculosis treatment for 2 months, a follow-up CT scan showed complete resolution of the lesions. Intense 18F-FDG uptake could be due to an infectious process such as synchronous tuberculous lymphadenitis. Therefore, this could mimic a malignant condition such as lymphoma with extensive lymph node metastasis due to a false-positive finding, which may lead to a misdiagnosis.
Endoscopic Submucosal Dissection for Rectal Neuroendocrine (Carcinoid) Tumors
Moon, Sang Hui,Hwang, Jeong Hwan,Sohn, Dae Kyung,Park, Ji Won,Hong, Chang Won,Han, Kyung Su,Chang, Hee Jin,Oh, Jae Hwan Mary Ann Liebert 2011 Journal of laparoendoscopic & advanced surgical te Vol.21 No.8
<P>Rectal neuroendocrine (carcinoid) tumors smaller than 1???cm without lymph node metastasis and confined within the submucosal layer (stage T1aN0) can be treated using endoscopic resection. The present study was aimed to assess the safety and efficacy of endoscopic submucosal dissection (ESD) for T1aN0 carcinoid tumors.</P>
Moon, Sang-Hyun,Kim, Si-Jin,Kim, Min-Cheol,Lee, Gyu-Ho,Choe, Hui-Seon,Han, Sang-Beom,Choi, Jong-Ho,Park, Kyung-Won Elsevier 2018 Journal of Alloys and Compounds Vol.741 No.-
<P><B>Abstract</B></P> <P>For advanced high-performance lithium-ion batteries (LIBs), a novel anode material with a high capacity needs to be developed. In particular, molybdenum disulfide (MoS<SUB>2</SUB>) with a layered structure consisting of S-Mo-S formed by van der Waals force exhibits a high theoretical capacity (1280 mAh g<SUP>−1</SUP>). In this study, MoS<SUB>2</SUB>-TiN electrodes were fabricated using a radio frequency (RF) magnetron sputtering deposition method by which MoS<SUB>2</SUB> and TiN sputtering targets could be individually controlled. As the RF power of the TiN target increased (20, 40, 60 W), the ratio of Ti in the electrodes increased and the ratio of Mo in the electrodes decreased. In particular, compared to pure MoS<SUB>2</SUB>, the MoS<SUB>2</SUB>-TiN with an optimum amount of TiN exhibited a high discharge capacity for 300 cycles and an improved high-rate cycling performance, i.e. an initial discharge capacity of 789.2 mAh g<SUP>−1</SUP> with the maintained capacity of ∼700 mAh g<SUP>−1</SUP> for 300 cycles. This demonstrates that TiN in the MoS<SUB>2</SUB>-TiN could reduce the volumetric variation caused by the conversion reaction of MoS<SUB>2</SUB> and assist in the improvement of the electrodes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> MoS<SUB>2</SUB>-TiN nanostructured electrodes were fabricated using a co-sputtering deposition method. </LI> <LI> The electrode consists of MoS<SUB>2</SUB> as an active material and TiN as a matrix for lithium-ion batteries. </LI> <LI> MoS<SUB>2</SUB>-TiN nanostructured electrodes exhibited superior battery performance. </LI> <LI> The improved performance might be due to the suppressed volumetric change during the cycling. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Moon, Ya,Paek, In-Bok,Kim, Hui-Hyun,Ji, Hye-Young,Lee, Hye-Won,Park, Hyoung-Geun,Lee, Hye-Suk The Pharmaceutical Society of Korea 2004 Archives of Pharmacal Research Vol.27 No.9
A rapid, sensitive and selective hydrophilic interaction liquid chromatography-tandem mass spectrometric(HILIC-MS/MS) method for the determination of tiapride in human plasma was developed. Tiapride and internal standard, metoclopramide were extracted from human plasma with dichloromethane at basic pH and analyzed on an Atlantis HILIC silica column with the mobile phase of acetonitrile-ammonium formate (190 mM, pH 3.0) (94:6, v/v). The ana-Iytes were detected using an electrospray ionization tandem mass spectrometry in the multi-ple-reaction-monitoring mode. The standard curve was linear (r=0.999) over the concentration range of 1.00-200 ng/mL. The coefficient of variation and relative error for intra- and inter-assay at three QC levels were 6.4∼8.8% and -2.0∼3.6%, respectively. The recoveries of tiapride ranged from 96.3 to 97.4%, with that of metoclopramide (internal standard) being 94.2%. The lower limit of quantification for tiapride was 1.00 ng/mL using 1 00 $\mu$L of plasma sample.
Won, Hui-Jun,Moon, Jei-Kwon,Jung, Chong-Hun,Chung, Won-Yang Korean Nuclear Society 2008 Nuclear Engineering and Technology Vol.40 No.6
Ferrocyanide-anion exchange resin was prepared and the prepared ion exchange resins were tested on the ability to uptake $Cs^+$ ion. The prepared ion exchange resins were resin-KCoFC, resin-KNiFC, and resin-KCuFC. The three tested ion exchange resins showed ion exchange selectivity on the $Cs^+$ ion of the surrogate soil decontamination solution, and resin-KCoFC showed the best $Cs^+$ ion uptake capability among the tested ion exchange resins. The ion exchange behaviors were explained well by the modified Dubinin-Polanyi equation. A regeneration feasibility study of the spent ion exchange resins was also performed by the successive application of hydrogen peroxide and hydrazine. The desorption of the $Cs^+$ ion from the ion exchange resin satisfied the electroneutrality condition in the oxidation step; the desorption of the $Fe^{2+}$ ion in the reduction step could also be reduced by adding the $K^+$ ion.
Tong Moon,Dong Hui Cho,Jung Min Youn,Jae Bok Lee,Jeoung Won Bae,Seung Pil Jung 한국유방암학회 2016 Journal of Breast Disease Vol.4 No.2
Purpose: In the treatment of breast cancer, neoadjuvant chemotherapy (NAC) is useful to reduce breast cancer size before surgical intervention. Patients who achieve a pathologic complete response (pCR) to NAC have improved overall survival (OS). However, the relationship between prognosis and partial response is yet unclear. In this study, we evaluated prognostic factors and the tumor response ratio (TRR) method among patients who received NAC. Methods: Clinicopathologic factors were evaluated to predict OS. The TRR was calculated by dividing pathologic tumor size by clinical tumor size. TRRs were then categorized into four groups, and the survival times for the different TRR groups were compared using statistical evaluation. Results: Clinical N stage (p=0.02), overall stage (p=0.04), pathologic N stage (p=0.03), hormone receptor status (p=0.01), and lymphovascular invasion (p=0.02) were significantly associated with OS. Pathologic overall stage and TRR did not correlate with OS. Patients with a pCR exhibited the best survival rates using the current staging system and the TRR method. Conclusion: Clinicopathologic factors can be easily applied to predict OS, and clinicians could use these parameters until an accurate, simple, and highly discriminatory methods is developed to assess breast cancer patients with a partial.