http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Lee Jongin (검색결과 184 건)
- 무료
- 기관 내 무료
- 유료
-
-
EURO-Ⅳ대응 상용디젤엔진의 SCR 시스템 적용에 따른 나노입자 배출 특성(Ⅱ)
이천환(Chunhwan Lee),오광철(Kwangchul Oh),김덕진(Deokjin Kim),이종인(Jongin Lee),전성용(Sungyong Jeon),이춘범(Chunbeom Lee),이동인(Dongin Lee),김상호(Sangho Kim),한현식(Hyunsik Han),배재호(Jaeho Bae),김은석(Eunseok Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
It is well known that two representative methods satisfy the condition of EURO-Ⅳ regulation from EURO-Ⅲ. The first method is the reduction of NOx in an engine operation by utilizing EGR and the elimination of increased PM by DPF. However, it results in bad fuel efficiency. The second is the strategy to reduce PM and emit the high NOx concentration. In other words, the concentration of PM produced by high efficiency combustion sufficiently meets the requirement of regulation, and NOx generated in this process can be removed by SCR system. While it has a good fuel efficiency relative to the first method mentioned above, its social infrastructure is demanded. In this paper, the number distribution of nano PM has been evaluated analyzed by Electrical Low Pressure Impactor(ELPI) in case of Urea-SCR system applied. From the results, The particle number was increased slightly in proportion to the amount of urea injection on Fine Particle Region, whether AOC is used or not.
-
EURO-Ⅳ대응 상용디젤엔진의 SCR 시스템 적용에 따른 나노입자 배출 특성
이천환(Chunhwan Lee),오광철(Kwangchul Oh),김덕진(Deokjin Kim),이종인(Jongin Lee),전성용(Sungyong Jeon),이춘범(Chunbeom Lee),이동인(Dongin Lee),김상호(Sangho Kim),한현식(Hyunsik Han),배재호(Jaeho Bae),김은석(Eunseok Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
It is well known that two representative methods satisfy the condition of EURO-Ⅳ regulation from EURO-Ⅲ. The first method is the reduction of NOx in an engine operation by utilizing EGR and the elimination of increased PM by DPF. However, it results in bad fuel efficiency. The second is the strategy to reduce PM and emit the high NOx concentration. In other words, the concentration of PM produced by high efficiency combustion sufficiently meets the requirement of regulation, and NOx generated in this process can be removed by SCR system. While it has a good fuel efficiency relative to the first method mentioned above, its social infrastructure is demanded. In this paper, the number distribution of nano PM has been evaluated analyzed by Electrical Low Pressure Impactor(ELPI) in two different case of engine condition, EURO-Ⅲ base engine with DPF system and EURO-Ⅳ level engine(modified from EURO-Ⅲ) with SCR system. From the result of this study, the number distribution of nano PM in a modified EURO-Ⅳ engine was similar level compared to the result of EURO-Ⅲ engine installed DPF system. In case of EURO-Ⅳ engine with SCR system, the particle number was increased slightly in proportion to the amount of urea injection on big size particles, whether AOC is used or not.
-
mySyntenyPortal: an application package to construct websites for synteny block analysis
Lee, Jongin,Lee, Daehwan,Sim, Mikang,Kwon, Daehong,Kim, Juyeon,Ko, Younhee,Kim, Jaebum BioMed Central 2018 BMC bioinformatics Vol.19 No.-
<P><B>Background</B></P><P>Advances in sequencing technologies have facilitated large-scale comparative genomics based on whole genome sequencing. Constructing and investigating conserved genomic regions among multiple species (called synteny blocks) are essential in the comparative genomics. However, they require significant amounts of computational resources and time in addition to bioinformatics skills. Many web interfaces have been developed to make such tasks easier. However, these web interfaces cannot be customized for users who want to use their own set of genome sequences or definition of synteny blocks.</P><P><B>Results</B></P><P>To resolve this limitation, we present mySyntenyPortal, a stand-alone application package to construct websites for synteny block analyses by using users’ own genome data. mySyntenyPortal provides both command line and web-based interfaces to build and manage websites for large-scale comparative genomic analyses. The websites can be also easily published and accessed by other users. To demonstrate the usability of mySyntenyPortal, we present an example study for building websites to compare genomes of three mammalian species (human, mouse, and cow) and show how they can be easily utilized to identify potential genes affected by genome rearrangements.</P><P><B>Conclusions</B></P><P>mySyntenyPortal will contribute for extended comparative genomic analyses based on large-scale whole genome sequences by providing unique functionality to support the easy creation of interactive websites for synteny block analyses from user’s own genome data.</P>
-
Jongin Lee,Min Choi,Sung Hye Park,Hyoung-Ryoul Kim,Hye-Eun Lee 대한직업환경의학회 2015 대한직업환경의학회지 Vol.27 No.-
Objectives: We aimed to ascertain the relationship between several factors and successful return to work using a structural equation model. Methods: We used original data from the Panel Study of Worker’s Compensation Insurance, and defined four latent variables as occupational, individual, supportive, and successful return to work. Each latent variable was defined by its observed variables, including age, workplace size, and quality of the medical services. A theoretical model in which all latent variables had a relationship was suggested. After examining the model, we modified some pathways that were not significant or did not fit, and selected a final structural equation model that had the highest goodness of fit. Results: All three latent variables (occupational, individual, and supportive) showed statistically significant relationships with successful return to work. The occupational and supportive factors had relationships with each other, but there was no relationship between individual and the other factors. Nearly all observed variables had significance with their latent variables. The correlation coefficients from the latent variables to successful return to work were statistically significant and the indices for goodness of fit were satisfactory. In particular, four observed variables-handicap level, duration of convalescence, working duration, and support from the company-showed construct validities with high correlation coefficients. Conclusions: All factors that we examined are related to successful return to work. We should focus on the supportive factor the most because its variables are modifiable to promote a return to work by those injured in their workplace.
-
Lee, In Hyuk,Cho, Jinwon,Chae, Keun Hwa,Cho, Min Kyung,Jung, Juhae,Cho, Jongin,Lee, Hyun Jin,Ham, Hyung Chul,Kim, Jin Young Elsevier 2018 Applied Catalysis B Vol.237 No.-
<P><B>Abstract</B></P> <P>Carbon blacks, which consist of the assemblies of small graphene clusters having a spherical concentric packing structure, are amorphous and have widely been used as catalyst supports for proton exchange membrane fuel cell (PEMFC) electrodes. However, poor electrochemical corrosion resistance during extended use and repeated cyclic operation of PEMFCs shortens their practical device lifetime; surface defects, such as nanosized disordered domains, have been established as the most influential factors. Herein, we coupled polymeric graphitic carbon nitride (pg-CN) with amorphous carbon black (a-CB) in a core@shell structure to produce an electrochemically efficient and stable electrocatalyst support. Our protocol allowed for the simultaneous optimization of uniformly thin graphitic shell structures for electrochemical corrosion stability and nitrogen-enriched functionalities on the carbon surfaces for electrocatalyst (e.g., platinum) nucleation. The newly prepared a-CB@pg-CNs enhanced the stable fuel cell devices operation and remained invariant even at high potential (1.2–1.7 V). Significantly, when used for constructing the PEMFC electrode, a-CB@pg-CN support-based Pt catalyst electrodes outperformed and exhibited superior stability over state-of-the-art commercial a-CB-based counterparts. Experimental observations and density functional theory (DFT) calculations revealed that the unusual electrocatalytic properties of as-prepared a-CB@pg-CNs originated from an intrinsic chemical and electronic coupling that synergistically reduced electrochemical corrosion kinetics and promoted catalyst–support interactions.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Polymeric graphitic carbon nitride was coated on amorphous carbon. </LI> <LI> The a-CB@pg-CN supports showed an electrochemical stability. </LI> <LI> Pt has been perfectly deposited on a-CB@pg-CN. </LI> <LI> The Pt/a-CB@pg-CN catalyst enhanced the stable PEM fuel cell devices operation. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
-
Synteny Portal: a web-based application portal for synteny block analysis
Lee, Jongin,Hong, Woon-young,Cho, Minah,Sim, Mikang,Lee, Daehwan,Ko, Younhee,Kim, Jaebum Oxford University Press 2016 Nucleic acids research Vol.44 No.w1
<P>Recent advances in next-generation sequencing technologies and genome assembly algorithms have enabled the accumulation of a huge volume of genome sequences from various species. This has provided new opportunities for large-scale comparative genomics studies. Identifying and utilizing synteny blocks, which are genomic regions conserved among multiple species, is key to understanding genomic architecture and the evolutionary history of genomes. However, the construction and visualization of such synteny blocks from multiple species are very challenging, especially for biologists with a lack of computational skills. Here, we present Synteny Portal, a versatile web-based application portal for constructing, visualizing and browsing synteny blocks. With Synteny Portal, users can easily (i) construct synteny blocks among multiple species by using prebuilt alignments in the UCSC genome browser database, (ii) visualize and download syntenic relationships as high-quality images, (iii) browse synteny blocks with genetic information and (iv) download the details of synteny blocks to be used as input for downstream synteny-based analyses, all in an intuitive and easy-to-use web-based interface. We believe that Synteny Portal will serve as a highly valuable tool that will enable biologists to easily perform comparative genomics studies by compensating limitations of existing tools. Synteny Portal is freely available at http://bioinfo.konkuk.ac.kr/synteny_portal.</P>
-
<i>In Vitro</i> Biosynthesis of Metal Nanoparticles in Microdroplets
Lee, Kyoung G.,Hong, Jongin,Wang, Kye Won,Heo, Nam Su,Kim, Do Hyun,Lee, Sang Yup,Lee, Seok Jae,Park, Tae Jung American Chemical Society 2012 ACS NANO Vol.6 No.8
<P>We report the use of a hydrogel polymer, recombinant <I>Escherichia coli</I> cell extracts, and a microdroplet-based microfluidic device to fabricate artificial cellular bioreactors which act as reactors to synthesize diverse metal nanoparticles (NPs). The combination of cell extracts, microdroplet-based microfluidic device, and hydrogel was able to produce a mass amount of artificial cellular bioreactors with uniform size and shape. For the first time, we report the alternating generation of microdroplets through one orifice for the fabrication of the artificial cellular reactors using the cell extract as inner cellular components and hydrogel as an artificial cellular membrane. Notably, the hydrogels were able to protect the encapsulated cell extracts from the surrounding environment and maintain the functionality of cellular component for the further cellular bioreactor applications. Furthermore, the successful applications of the fabricated artificial cellular bioreactors to synthesize various NPs including quantum dots, iron, and gold was demonstrated. By employing this microfluidic technique, the artificial cellular bioreactors could be applicable for the synthesis of diverse metal NPs through simple dipping of the reactors to the metal precursor solutions. Thus, the different size of NPs can be synthesized through controlling the concentration of metal precursors. This artificial cellular bioreactors offer promising abilities to biofriendly ways to synthesis diverse NPs and can be applicable in chemical, biomedical, and bioengineering applications.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/2012/ancac3.2012.6.issue-8/nn302043q/production/images/medium/nn-2012-02043q_0001.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nn302043q'>ACS Electronic Supporting Info</A></P>
-
Occupational Diseases Among Office Workers and Prevention Strategies
Jongin Lee,Jung-Wan Koo 대한인간공학회 2015 大韓人間工學會誌 Vol.34 No.2
Objective:In this review we discuss the health effects among office workers. Background: Even if office workers are not exposed hazardous or harmful environment frequently, some problems could be happened to the office workers. Although serious occupational diseases rarely occur to the office workers, it is important to consider occupational risk factors for the office worker because the portion of the office workers is relatively high in all industries. Method: We divided possible health effects for the office workers into three categories; musculoskeletal disorders, indoor environment, and cerebro-cardiovascular diseases. We reviewed related articles, textbooks, and statistical materials non-systematically and described risk factors, related illnesses, and prevention strategies on each category. Results: Office workers have various musculoskeletal disorders to be intervened. By medical treatment, improving working environment, and ergonomic intervention, office workers can be prevented from musculoskeletal injuries. Poor indoor environment can cause many building-related illnesses or sick building syndrome. Although the etiology of some problems by poor indoor environment is not clear, it helps to maintain adequate humidity, temperature, and clarity of indoor air. Cerebrocardiovascular diseases are a rising issue because office workers in Korea tend to work for a lot of time. To prevent the diseases, it is needed to work for adequate time, lengthen activity level, and manage other medical risk factors for the diseases. Conclusion: There is no distinct occupational disease for office workers. However, there are some aspects to consider the health effects of office workers and it is important to prevent the possible health problems. Application: A strategy against occupational diseases among office workers can be established by reviewing this article.
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
