전체 선택해제
총 41건 검색
본문검색 결과만 보기
-
Kinetic Study on Aminolysis of 4-Chloro-2-Nitrophenyl X-Substituted-Benzoates in Acetonitrile and in 80 mol % H2O/20 mol % DMSO: Effect of Medium on Reactivity and Reaction Mechanism
Kim. Ha-Ram, Um. Tae-Il, Kim. Min-Young, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2014, Vol.35 No.4 1128-1132 (5 pages)
-
Nucleophilic Substitution Reactions of Y-Substituted-Phenyl Benzoates with Potassium Ethoxide in Anhydrous Ethanol: Reaction Mechanism and Role of K+ Ion
Kim. Song-I, Cho. Hyo-Jin, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2014, Vol.35 No.1 177-181 (5 pages)
-
A Kinetic Study on Aminolysis of Benzyl 2-Pyridyl Thionocarbonate and t-Butyl 2-Pyridyl Thionocarbonate: Effects of Polarizability and Steric Hindrance on Reactivity and Reaction Mechanism
Kim. Min-Young, Bae. Ae Ri, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2013, Vol.34 No.8 2325-2329 (5 pages)
-
A Kinetic Study on Nucleophilic Substitution Reactions of Phenyl Y-Substituted-Phenyl Carbonates with Z-Substituted-Phenoxides: Effect of Modification of Nonleaving Group from Benzoyl to Phenyloxycarbonyl on Reactivity and Reaction Mechanism
Min. Se-Won, Kim. Min-Young, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2012, Vol.33 No.10 3253-3257 (5 pages)
-
Kinetics and Reaction Mechanism for Aminolysis of Benzyl 4-Pyridyl Carbonate in H2O: Effect of Modification of Nucleofuge from 2-Pyridyloxide to 4-Pyridyloxide on Reactivity and Reaction Mechanism
Kang. Ji-Sun, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2012, Vol.33 No.7 2269-2273 (5 pages)
-
Alkaline Hydrolysis of Y-Substituted Phenyl Phenyl Thionocarbonates: Effect of Changing Electrophilic Center from C=O to C=S on Reactivity and Mechanism
Kim. Song-I, Park. Hey-Ran, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 4 Pages
대한화학회 Bulletin of the Korean Chemical Society 2011, Vol.32 No.1 179-182 (4 pages)
-
Kinetics and Mechanism of Nucleophilic Displacement Reactions of Y-Substituted Phenyl Benzoates with Z-Substituted Phenoxides
Min. Se-Won, Seo. Jin-A, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2009, Vol.30 No.10 2403-2407 (5 pages)
-
Kinetic Study on Michael-type Reactions of 1-Phenyl-2-propyn-1-one with Alicyclic Secondary Amines: Effect of Medium on Reactivity and Mechanism
Hwang. So-Jeong, Park. Youn-Min, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 4 Pages
대한화학회 Bulletin of the Korean Chemical Society 2008, Vol.29 No.10 1911-1914 (4 pages)
-
Kinetics and Mechanism of Triethylamine Catalysed Michael Addition of Benzenethiol to 1-(2-Nitrovinyl)benzene in Acetonitrile
Sarathi. P.A., Gnanasekaran. C., Shunmugasundaram. A. 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2008, Vol.29 No.4 790-794 (5 pages)
-
Reaction Mechanism and Structure of Transition State Determined from Analysis of Bronsted βnuc for Aminolysis of 4-Nitrophenyl Diphenylphosphinate
Shin. Young-Hee, Kim. Eun-Hee, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 4 Pages
대한화학회 Bulletin of the Korean Chemical Society 2008, Vol.29 No.12 2509-2512 (4 pages)
-
Aminolyses of Y-substituted Phenyl 2-Furoates and Cinnamates: Effect of Nonleaving Group Substituent on Reactivity and Mechanism
Um. Ik-Hwan, Akhtar. Kalsoom, Park. Youn-Min, Khan. Sher Bahadar 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2007, Vol.28 No.8 1353-1357 (5 pages)
-
Cyclophilin A as a New Therapeutic Target for Hepatitis C Virus- induced Hepatocellular Carcinoma
JinhwaLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.5 1 375-383 (9 pages)
Hepatocellular carcinoma (HCC) related to hepatitis B virus (HBV) and hepatitis C virus (HCV) infections is thought to account for more than 80% of primary liver cancers. Both HBV and HCV can establish chronic liver inflammatory infections, altering hepatocyte and liver physiology with potential liver disease progression and HCC development. Cyclophilin A (CypA) has been identified as an essential host factor for the HCV replication by physically interacting with the HCV non structural protein... -
Functional Connectivity Map of Retinal Ganglion Cells for Retinal Prosthesis
JangHeeYe, SangBaekRyu, KyungHwanKim, YongSookGoo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.6 4 307-314 (8 pages)
Retinal prostheses are being developed to restore vision for the blind with retinal diseases such as retinitis pigmentosa (RP) or age-related macular degeneration (AMD). Among the many issues for prosthesis development, stimulation encoding strategy is one of the most essential electrophysiological issues. The more we understand the retinal circuitry how it encodes and processes visual information, the greater it could help decide stimulation encoding strategy for retinal prosthesis. Therefore,... -
Inhibitory Effect of Esculetin on the Inducuble Nitric Oxide Synthase Expression in TNF-stimulated 3T3-L1 Adipocytes
Jeong-YehYang 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.5 7 283-287 (5 pages)
While nitric oxide (NO) produced by inducible nitric oxide synthase (iNOS) is beneficial for host survival, it is also detrimental to the host. Thus, regulation of iNOS gene expression may be an effective therapeutic strategy for the prevention of unwanted reactions at various pathologic conditions. During the screening process for the possible iNOS regulators, we observed that esculetin is a potent inhibitor of cytokine-induced iNOS expression. The treatment of 3T3-L1 adipocytes with the tumor... -
Spatial and Temporal Genetic Diversity and Population Structure of Hemileia vastatrix from Peruvian Coffee Plantations
Cinthia Quispe-Apaza, Roberto Mansilla-Samaniego 한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2021, 37권 3호 7 280-290 (11 pages)
Population genetic studies of Hemileia vastatrix have been conducted in order to describe the evolutionary dynamics of the pathogen and the disease epidemiology as consequence of changes in disease management and host distribution occurred in Peru after the 2013 epi- demic. These analyses were performed by sequencing the internal transcribed spacers of the nuclear ribosom- al DNA (rDNA-ITS) of H. vastatrix collected from two coffee growing areas in 2014 and 2018. H. vastatrix pop- ulation showed... -
An Expected Crisis : A Case Study of Volkswagen Diesel Crisis
Sang Yeal Lee, Hong min Ahn, Yong Suk Cho 한국광고PR실학회 광고PR실학연구 21 Pages
한국광고PR실학회 광고PR실학연구 2017, 제 10권 1호 10 244-264 (21 pages)
This exploratory case study analyzes the Volkswagen diesel crisis from a crisis communication perspective. The Volkswagen diesel case provides a unique opportunity to examine how a Fortune 500 company managed (or mismanaged) an intentional corporate misdeed, and to understand the shortcomings of existing crisis communication theories. In analyzing the case, this study adopted the theoretical frameworks from the two dominant crisis communication theories, namely Image Repair Theory and... -
Quality Early Childhood Care and Education in India:Initiatives, Practice, Challenges and Enablers
Chandra Reetu, Gulati Renu, Sharma Adarsh 환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 27 Pages
환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 2017, Vol.11 No.1 3 41-67 (27 pages)
Early Childhood Care and Education (ECCE) is globally recognized as a crucial element of education for all. Therefore, countries have intensely pursued it. After many efforts, progress towards ensuring ECCE is apparent in many countries in the world. But most of them could not either completely achieve this goal or compromised its quality due to inadequate resources, improper planning and ineffective implementation strategies; especially a vast and populous country like India. A number of... -
Effects of cross-linking methods for polyethylene-based carbon fibers: review
Kwan-Woo Kim, Hye-Min Lee, Jeong-Hun An, Byoung-Suhk Kim, Byung-Gak Min, Shin-Jae Kang, Kay-Hyeok An, Byung-Joo Kim 한국탄소학회 Carbon Letters 24 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.3 2 147-170 (24 pages)
In recent decades, there has been an increasing interest in the use of carbon fiber reinforced plastic (CFRP) in aerospace, renewable energy and other industries, due to its low weight and relatively good mechanical properties compared with traditional metals. However, due to the high cost of petroleum-based precursors and their associated processing costs, CF remains a specialty product and as such has been limited to use in high-end aerospace, sporting goods, automotive, and specialist... -
교육훈련 효과 및 효율성 측정을 위한 실용적 접근법 : 교육훈련평가의 활용 증진을 위하여
배을규 한국성인교육학회 Andragogy Today 39 Pages
한국성인교육학회 Andragogy Today 2003, Vol.6 No.2 5 109-147 (39 pages)
기업을 비롯한 여타 조직에서 인적자원개발 체계의 한 부분인 교육훈련 활동(training)은 전략적 차원에서 그 중요성이 강조되고 있다. 즉 효과적으로 계획되고 실시된 교육훈련 활 동은 조직의 인적자원에 대한 효율적 관리를 지원하며 전략적 목표 달성에 기여할 수 있 다. 따라서 교육훈련 활동에 관련된 의사결정을 위한 체계적인 평가의 중요성 또한 간과할 수 없다. 그러나 많은 조직들이 교육훈련평가를 피상적으로 실시하고 있으며 교육훈련에 관한 의사결정에 거의 반영하지 못하고 있는 것이 현실이다. Kaufman과 Keller는 현재... -
세계화 시대의 성인교육에 대한 경제학적 관점과 정부의 역할
이용학 한국성인교육학회 Andragogy Today 36 Pages
한국성인교육학회 Andragogy Today 2009, Vol.12 No.3 7 153-188 (36 pages)
이 논문의 주요 목적은 세계화의 영향이 국가의 성인교육정책에 미치는 영향을 분석하고 정부의 역할을 제시하기 위한 것이다. 세계화된 경제의 특성을 분석하면 서 세계화의 어두운 면을 살펴보고 성인교육의 경제적 관점으로서 Manpower 이론, 인간자본이론, 사회적자본이론 및 기타 이론들을 소개하였다. 성인교육을 경제적 관점에서 살펴보면, 성인교육이 개인의 전 생애에 결친 소득을 증대시키는 것은 분명해 보인다. 여러 가지 연구방법론상 문제점에 대한 비판도 있지만 교육을 받은 기 간과 개인의 소득에는 어느 정도의... -
한국의 국제스포츠 행사에 대한 대 테러 전략
Park, Dong-Kyun 한국경호경비학회 시큐리티연구 26 Pages
한국경호경비학회 시큐리티연구 2010, 제 22호 4 65-90 (26 pages)
세계사적인 측면에서 볼 때, 국가마다 위기상황은 존재하게 마련이다. 이와 같이 국가가 경험하게 되는 각종 위기 상황은 대부분이 전쟁과 관련된 것들이 많았다. 그러나 최근에는 국가(정부)가 관심을 기울여야 할 위기의 영역이 다양해지고 또한 폭이 넓어졌다. 즉 탈냉전 이후 국가가 대비하고, 관리해야 할 위기의 근원과 위협요인들이 급증하기 시작한 것이다. 국제정치의 현재 패러다임으로 볼 때, 세계대전의 위험성은 줄었지만 지역차원의 무장분쟁이 나 갈등사례는 오히려 증가했다. 특히 테러는 이제 전쟁 이상의 위협으로... -
The α-Effect in Nucleophilic Substitution Reactions of Y-Substituted-Phenyl X-Substituted-Cinnamates with Butane-2,3-dione Monoximate
Kim. Min-Young, Son. Yu-Jin, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 6 Pages
대한화학회 Bulletin of the Korean Chemical Society 2013, Vol.34 No.10 2877-2882 (6 pages)
-
Structure-Reactivity Correlations in Nucleophilic Displacement Reactions of Y-Substituted-Phenyl X-Substituted-Cinnamates with Z-Substituted-Phenoxides
Son. Yu-Jin, Kim. Eun-Hee, Kang. Ji-Sun, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 6 Pages
대한화학회 Bulletin of the Korean Chemical Society 2013, Vol.34 No.8 2455-2460 (6 pages)
-
Nucleophilic Substitution Reactions of Phenyl Y-Substituted-Phenyl Carbonates with Butane-2,3-dione Monoximate and 4-Chlorophenoxide: Origin of the α-Effect
Kim. Min-Young, Min. Se-Won, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2013, Vol.34 No.1 49-53 (5 pages)
-
Origin of the α-Effect in Nucleophilic Substitution Reactions of Y-Substituted Phenyl Benzoates with Butane-2,3-dione Monoximate and Z-Substituted Phenoxides: Ground-State Destabilization vs. Transition-State Stabilization
Kim. Mi-Sun, Min. Se-Won, Seo. Jin-A, Um. Ik-Hwan 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2009, Vol.30 No.12 2913-2917 (5 pages)
-
Research Articles : Effect of Rice stripe virus NS3 on Transient Gene Expression and Transgene Co-Silencing
한국식물병리학회 The Plant Pathology Journal 5 Pages
한국식물병리학회 The Plant Pathology Journal 2011, 27권 4호 2 310-314 (5 pages)
Nonstructural protein 3 (NS3) encoded by RNA3 of Rice stripe virus (RSV), known to be a suppressor of gene silencing, was cloned and sequenced. The cloned NS3 gene is composed of 636 nucleotides encoding 211 deduced amino acids, and showed a high degree of similarity with the equivalent genes isolated from Korea, Japan and China. The NS3 gene promoted the enhancement of transient gene expression and suppressed transgene co-silencing. In the transient GFP expression via agroinfiltration, GFP...
