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STEP을 이용한 異기종 CAD 시스템간의 Modeling 데이터 변환에 관한 연구
원동욱,한복수,명태식 한밭대학교 생산기반기술연구소 2003 생산기반기술연구소 논문집 Vol.3 No.1
A CAD system used in current industry is very various, and is each different in form establishing in a design, interpretation, processing part according to a characteristic of program to need in a company and is on a distribution. It is necessary for to try do an analysis on data exchange between each CAD System in this misgovernment. Let's look into a car, a ship, an aspect of a CAD System using in a representative enterprise of an airplane field. Because a customer enterprise is spending an expensive program to have a great deal of merits in a customer enterprise It will be going to match sub vendors in a program of a customer enterprise, but it draws sub vendors and cannot become a lot of assistances. Therefore, it is the trend that sub enterprises convert the Data which used each other program, and exchange information. It will be heard in various demands and CAD technology to change suddenly, data exchange with an enterprise of a consumer by production, and before a great deal of engineering changes are asked. A great deal of study is necessary on data exchange it is the conversation that a lot of enterprise is mutual, and to be able to play.
저빈도 반복성 경두개 자기자극이 정상인의 시각적 단기 기억에 미치는 영향
오해정,김원,이경욱,박원명,전태연,한진희,채정호 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.5
Objectives : Repetitive transcranial magnetic stimulation (rTMS) is a novel, noninvasive method of brain stimulation. Since conventional rTMS does not cause seizure, marked advantage over electroconvulsive therapy (ECT), rTMS can be used easily and widely. Once the effects of rTMS on cognitive function are elucidated, its application will be further extended. However, the effects of rTMS on cognitive function have not been well examined. This study aimed to evaluate the effect of low frequencyr TMS on visual short term memory. Methods : Forty normal healthy volunteers were randomly assigned to rTMS (n=20) or sham (n=20) groups. The rTMS group were again randomly divided into left prefrontal (n=10) and right prefrontal (n=10) groups. For each group rTMS was given at 1 Hz for 20 minutes with 100% of motor threshold. As a cognitive task, Corsi Block Tapping Test (CORSI) in the computerized Vienna Test System, which can assess visual short term memory, was performed before, during, and after the rTMS. Results : No significant difference was found in the visual short term memories between the rTMS and the sham groups before, during, or after 1 Hz rTMS, nor between the left and right prefrontal rTMS groups. Conclusion : This study demonstrates that rTMS, contrary to ECT, has no adverse visual short term memory effect when used as the standard treatment paradigm. Therefore, rTMS could be a new and safe treatment method in various neuropsychiathc fields without any interference of cognitive function.
( Tae Uk Han ),( Seungdo Kim ),( Young-min Kim ),( Byeonga Hwang ),( Yunhee Lee ),( Chu Watanabe ) 한국폐기물자원순환학회(구 한국폐기물학회) 2015 한국폐기물자원순환학회 3RINCs초록집 Vol.2015 No.-
This research attempts to elucidate the bromine elimination effects during the catalytic pyrolysis of waste paper laminated phenolic printed circuit board (PLP-PCB) over HZSM-5 and Titanium dioxide (TiO<sub>2</sub>). To assess the product distribution, pyrolyzer-GC/MS (Py-GC/MS) was introduced at 600℃. Three sets of experiment were carried out: 1) thermal decomposition of waste PLP-PCB, 2) catalytic pyrolysis of waste PLP-PCB over HZSM-5, and 3) catalytic pyrolysis of waste PLP-PCB over TiO2. In case of catalytic pyrolysis over HZSM-5, Py-GC/MS results reveal that total amount of brominated organic compounds decrease by 16.3% to compare with the thermal decomposition of waste PLP-PCB. On the other hand, the amount of brominated compounds under catalytic pyrolysis over TiO<sub>2</sub> was more decrease by 77.4%.
Non-isothermal pyrolysis properties of <i>Laminaria japonica</i>
Han, Tae Uk,Kim, Young-Min,Siddiqui, Muhammad Zain,Lee, Taeho,Watanabe, Atsushi,Teramae, Norio,Kim, Seungdo,Park, Young-Kwon Elsevier 2018 JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS Vol.130 No.-
<P><B>Abstract</B></P> <P>The pyrolysis of <I>Laminaria</I> (<I>L.</I>) <I>japonica</I> was examined using non-isothermal analytical pyrolysis techniques, such as thermogravimetric (TG) and multi-shot pyrolyzer (Py)-gas chromatography/mass spectrometry (GC/MS) analysis. TG, derivative TG curves, and the apparent activation energy suggested that the decomposition of <I>L. japonica</I> has three thermal decomposition stages. The average mass spectra and multi-shot Py-GC/MS chromatograms obtained at each thermal decomposition stage confirmed the main decomposition reaction at each thermal zone. At the first stage, the decomposition of lipids and carbohydrates was initiated. The main decomposition of carbohydrates occurred at the second stage. At the final stage, proteins were decomposed and char intermediates were stabilized by supplying a higher temperature. A low activation energy at the second stage and the presence of metals in <I>L. japonica</I> suggests that during the non-isothermal pyrolysis of <I>L. japonica</I>, the catalytic effect is enhanced and involves the decomposition of carbohydrates.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Pyrolysis reaction pathway of <I>L. Japonica</I> was investigated using TGA and Py-GC/MS. </LI> <LI> Pyrolysis of <I>L. Japonica</I> was accounted for three independent decomposition reactions of biomass components. </LI> <LI> Low activation energy was achieved on the pyrolysis of <I>L. japonica</I> by the presence of inorganics. </LI> </UL> </P>