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- 저자 : 盧承宇 (검색결과 82 건)
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盧承宇,金載錄 충주대학교 산업대학원 2002 大學院論文輯 Vol.3 No.-
The degree of deacetylation are decreased with increasing removal time of calcium carbonate and increased with increasing reaction temperature and reaction time. The viscosity average molecular weight are decreased with increasing reaction temperature and reaction time of deacetylation. When we consider the change of pH at constant input of chitosan, the optimazed pH is 4, and the flocculation effect also is order of c > b > a for COD, SS, permeability, and Zeta potential. When we consider the change of input chitosan at optimazed pH condition, the optimazed concentration of input chitosan is 10ppm, and the flocculation effect also is order of c > b > a for COD, SS, permeability, and Zeta potential. The removal of color is excellent, as the viscosity average molecular weight is high. The minimum removal of color is 78 percentage. From this result, we identified the possibility of excellent natural polymer flocculation agent.
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3d¹ 電子系에 對한 NMR 化學的 移動에 關한 硏究(Ⅰ)
盧承宇 忠州大學校 1999 한국교통대학교 논문집 Vol.34 No.2
The NMR shift arising from the electron angular momentum and the electron spin dipolar-nuclear spin angular momentum interaction has been examined for 3d¹system in a strong octahedral crystal field when the threefold axis is chosen as the quantization axis. To investigate the NMR shift in this situation, first, we have extended the evalution on the hyperfine integrals to any paris of 3d orbitals adopting a general method which is applicable to a general vector R, pointing in arbitrary direction in space. Secondary, a general expression using a nonmultiple techniqus is drived for the NMR shift resulting from the electron angular momentum and the electron spin dipolar-nuclear spin angular momentum interastions. From this expression all the multipolar terms are determind. △B/B for the 3d¹system in this case is compared with that for the 3d¹system when the z axis is chosen as the quantization axis. When we choose the threefold axis as the quantization axis, it is found that along the<100>, <010> and <001> axes, △B/B values are significantly different from each other and along the <111>, <-1-1-1>,<-11-1>,<1-11>,<-1-11>,<11-1> <1-1-1> and <-111> axes, △B/B values are however the same. We also find that the 1/R7 term contributes dominantly to the NMR shift for all values of R. When 1/R5 term is included, there is good agreement between the exact solution and the multipolar terms when R≤0.35 nm.
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四角形[Pt(II)(PMe₃)₂X₂](X=Methyl,Cl)形態錯物에 대한 雙極自 모멘트의 計算에 關한 硏究
盧承宇 충주대학교 1997 한국교통대학교 논문집 Vol.32 No.2
EHT 計算에서 固有函數를 利用하여, 平面四角形 [Pt(II)(PMe₃)₂X₂](X=Methy1,CI)形態錯物의 雙極子 모멘트를 計算하였다. 計算된 cis-[Pt(II)(PMe₃)₂X₂]錯物의 雙極子 모멘트값이 cis-[Pt(II)(PMe₃)₂X₂]錯物의 雙極子 모멘트값의 2倍로 計算되었다. 이러한 結果는,cis-[Pt(II)(PMe₃)₂X₂]錯物에 對한 實驗的 測定値가 cis-[Pt(II)(PMe)CI]錯物에 對한 값보다 낮은 實驗的인 結果에 接近한다. 特히 cis-[Pt(II)(PMe₃)₂X₂]錯物에 대하여 計算한 雙極子 모멘트 값은 실험적 값에 매우 接近 하였다.
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4d¹전자계에 대한 NMR 화학적 이동에 관한 연구(제1보)
盧承宇 忠州大學校 1985 한국교통대학교 논문집 Vol.19 No.1
The NMR chemical shift arising from 4d electron angular momentum and 4d electron spin dipolar-nuclear angular momentum interaction for a 4d¹ system in a strong crystal field of octahedral symmetry, when the threefold axis is chosen as the quantization axis, has been investigated. A general expression using a nonmultipolar expansion method is derived for the NMR chemical shift. From this expression all the multipolar terms are determined. We find that the nonmultipolar results for the NMR chemical stift, △B, is exactly in agreement with the multipolar results when R=0.20㎚. It is also found that the 1/R?? term contributes to the NMR chemical shift almost the same as the 1/R?? in magnitude. The temperature dependence analysis of △B/B (ppm) at various values of R shows that the 1/T² term has the dominant contribution to the NMR chemical shift but the contributions of other two terms are certainly significant for a 4d¹ system in a strong crystal field of octahedral symmetry when the threefold axis is chosen to be the axis of quantization.
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盧承宇 忠州大學校 1983 한국교통대학교 논문집 Vol.16 No.2
The extraction curve of metal ions with amberite LA1-chloroform ha been found to be more steeper than with amberite LA1-xylene or hexane, and extraction ratio of Zn (Ⅱ) in 2M-HCI solution is 97%. The extraction ratio of As(Ⅲ) in 10M∼12M-HC1 solution, Sb(Ⅲ) in 3∼5 M-HC1 solution and Fe(Ⅲ) in 8∼10M-HC1 solution are 100%. The saparated elements from Bimetal were determiened by colorimetry, Zn(Ⅱ) with xylenol orange, As(Ⅲ) with molybdenum blue Sb(Ⅲ) with rhodamine B and Fe(Ⅲ) with BPHA.
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電子衝擊에 依하여 생기는 斷片Ion을 利用한 有機高分子量 化合物의 構造解析
盧承宇 忠州大學校 1972 한국교통대학교 논문집 Vol.5 No.-
The mass spectra of 8.8-dicyanoheptafulvene and its derivatives, shich are considered to belong to nonbenzenoid aromatic compound, were measured. The high degree of aromaticity of 8.8-dicyanoheptafulvene was made clear by mass spectrometry. Low mass regions of dicyanoheptafulvene showed the elimination of HCN from parent ion and rearrangement to phenylpropiolonitrile ion. The mass spectra of methoxy-dicyanoheptafulvenes showed fragmentation quite different from that 8.8-dicyanoheptafulvenes. The structrure and fragmentation processes of dicyanothepafulvences were discussed.
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O對稱의 센結晶場에서 d1 電子系의 磁氣모멘트 및 NMR 移動에 對한 電場의 影響에 關한 硏究
노승우 忠州大學校 2003 한국교통대학교 논문집 Vol.38 No.2
z 軸方向으로 電場을 適用하였을 때 센結晶場에서 d1 電子系에 對한 磁氣모멘트 및 NMR移動에 對한 電場의 影響을 考察하였다. 計算한 磁氣모멘트 값은 電場의 影響을 크게 받지 않았다. 그러나 電場의 세기가 增加함에 따라 z 軸方向의 NMR移動 값은 크게 增加하여 限界값에 接近하였지만 x 및 y軸方向의 NMR移動 값은 繼速減少하였다. 이 結果는 d1 電子系의 八面體結晶場이 z 軸方向으로 適用한 電場으로 因하여 일그러졌음을 暗示한다.
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대규모 가상 HPC 테스트베드 기반 지능형 통합 관리 플랫폼 기능 검증
노승우,유진승,김상완,오광진,유명환 한국정보과학회 2022 정보과학회논문지 Vol.49 No.4
This paper introduces an intelligent integrated management platform developed by itself to manage high-performance computers equipped with board management controller (BMC) functions, and presents large-scale virtual High Performance Computing (HPC) testbeds and experimental results to verify this platform. Intelligent integrated management platforms can monitor and control the hardware sensors of existing high-performance computers using an Intelligent Platform Management Interface (IPMI) to communicate with the BMC. In addition, a separate agent module operated within the controller was developed and applied to expand the function and performance of the BMC in a high performance computer developed in Korea. In this paper, we introduced an intelligent integrated management platform, built 1,200 virtual HPC testbeds, and verified their functions after linking them to the same integrated management platform as the actual physical server. 본 논문에서는 보드 관리 컨트롤러(BMC) 기능을 탑재한 초고성능컴퓨터들을 관리하기 위해 자체 개발한 지능형 통합 관리 플랫폼을 소개하고, 본 플랫폼 검증을 위해 대규모의 가상 HPC 테스트베드 구축 방안과 실험 결과를 제시한다. 지능형 통합 관리 플랫폼은 BMC와 통신하기 위해 기본적으로 지능형 플랫폼 관리 인터페이스(IPMI: Intelligent Platform Management Interface)를 활용하여 기존의 초고성능컴퓨터들의 하드웨어 센서를 모니터링하고 제어할 수 있다. 뿐만 아니라 국내에서 자체개발한 초고성능컴퓨터 내 보드 관리 컨트롤러의 기능 확장과 성능 향상을 목적으로 컨트롤러 내에서 동작하는 별도의 에이전트 모듈을 개발하여 적용하였다. 본 논문에서는 지능형 통합 관리 플랫폼을 소개하고, 실제 물리서버와 동일한 1200대의 가상 HPC 테스트베드 구축 및 통합 관리 플랫폼과 연동한 후 기능을 검증하였다.
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