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Jang, Jun Ho,Park, Taesung,Lee, Jong Soo The Korean Society of Fisheries and Aquatic Scienc 2015 Fisheries and Aquatic Sciences Vol.18 No.2
Two new bitter-tasting cyclic peptides comprising six amino acids, namely gamakamide C and D, were isolated from cultured oysters Crassostrea gigas. Dimethylaminoazobenzene sulfonyl-amino acid analysis detected Val and Leu in gamakamide C and Ile and Leu in gamakamide D. The molecular formula of gamakamide C was determined as $C_{43}H_{60}N_{7}O_8S$ by high-resolution fast atom bombardment mass spectroscopy (HR FAB-MS) ($[M+H]^+m/z822.4200{\Delta}-2.4mmu$), and that of gamakamide D was determined as $C_{43}H_{62}N_7O_8S$ by HR FAB-MS ($[M+H]^+m/z836.4379{\Delta}-2.0mmu$). Comparison of amino acid analyses and fragment ions by MS/MS among gamakamide C, D, and E (known), the structures of gamakamide C and D were confirmed $as-{\small{L}}-Val-{\small{L}}-Met(SO)-{\small{L}}-NMe-Phe-{\small{L}}-Leu-{\small{D}}-Lys-{\small{L}}-Phe-$ and $-{\small{L}}-Ile-{\small{L}}-Met(SO)-{\small{L}}-NMe-Phe-{\small{L}}-Leu-{\small{D}}-Lys-{\small{L}}-Phe-$, respectively.
김태성(Taesung Kim),김상우(Sangwoo Kim),홍순석(Soonseok Hong),장재덕(Jaeduk Jang),김현수(Hyunsoo Kim) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this paper, a clutch heat generation performance simulator is developed based on Bondgraph model in order to analyze the temperature characteristics due to the heat generation when the lock-up clutch is slipping, Using the simulator, the lock-up clutch heat characteristics are investigated' and compared with the test results. It is found that the simulator developed in this study is able to predict the heat generation performance of the lock-up clutch and can be used in design of the lock-up clutch slip control.
Kim, Jang Ah,Kulkarni, Atul,Kang, Junmo,Amin, Rashid,Choi, Jae-Boong,Park, Sung Ha,Kim, Taesung American Scientific Publishers 2012 Journal of Nanoscience and Nanotechnology Vol.12 No.7
<P>Graphene is a zero band-gap semi-metal with remarkable electromagnetic and mechanical characteristics. This study is the first ever attempt to use graphene in the surface plasmon resonance (SPR) sensor as replacement material for gold/silver. Graphene, comprised of a single atomic layer of carbon, is a purely two-dimensional material and it is an ideal candidate for use as a biosensor because of its high surface-to-volume ratio. This sensor is based on the resonance occasion of the surface plasmon wave (SPW) according to the dielectric constants of each metal film and detected material in gas or aqueous phase. Graphene in the SPR sensor is expected to enlarge the range of analyte to bio-aerosols based on the superior electromagnetic properties of graphene. In this study, a SPR-based fiber optic sensor coated with multi-layered graphene is described. The multi-layered graphene film synthesized by chemical vapor deposition (CVD) on Ni substrate was transferred on the sensing region of an optical fiber. The graphene coated SPR sensor is used to analyze the interaction between structured DNA biotin and Streptavidin is analyzed. Transmitted light after passing through the sensing region is measured by a spectrometer and multimeter. As the light source, blue light which of 450 to 460 nm in wavelength was used. We observed the SPR phenomena in the sensor and show the contrary trends between bare fiber and graphene coated fiber. The fabricated graphene based fiber optic sensor shows excellent detection sensitivity of the interaction between structured DNA and Streptavidin.</P>
자동변속기 토크컨버터 록업 및 연비 성능 시뮬레이터 개발
김태성(Taesung Kim),김남두(Namdoo Kim),장재덕(Jaeduk Jang),김현수(Hyunsoo Kim) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this paper, a AMESim vehicle performance simulator is developed for automatic transmission with torque converter. Using the simulator lock-up and slip control area of the torque converter derived for a given torque converter. It is found that the fuel economy by the simulation is in good accordance with the test results which demonstrates the validity of the simulator. It is also found that the fuel economy can be improved approximately 3% in case of slip control of the lock-up clutch. It is expected developed in this paper can be used to design and evaluate the performance of the lock-up clutch and torque converter for automatic transmission vehicle.
( Jun Ho Jang ),( Taesung Park ),( Jong Soo Lee ) 한국수산과학회(구 한국수산학회) 2015 Fisheries and Aquatic Sciences Vol.18 No.2
Two new bitter-tasting cyclic peptides comprising six amino acids, namely gamakamide C and D, were isolated from cultured oysters Crassostrea gigas. Dimethylaminoazobenzene sulfonyl-amino acid analysis detected Val and Leu in gamakamide C and Ile and Leu in gamakamide D. The molecular formula of gamakamide C was determined as C43H60N7O8S by high-resolution fast atom bombardment mass spectroscopy (HR FAB-MS) ([M + H]+ m/z 822.4200 Δ -2.4 mmu), and that of gamakamide D was determined as C43H62N7O8S by HR FAB-MS ([M + H]+ m/z 836.4379 Δ -2.0 mmu). Comparison of amino acid analyses and fragment ions by MS/MS among gamakamide C, D, and E (known), the structures of gamakamide C and D were confirmed as -l-Val-l-Met(SO)-l-NMe-Phe-l-Leu-d-Lys-l-Phe- and -l-Ile-l-Met(SO)-l-NMe-Phe-l-Leu-d-Lys-l-Phe-, respectively.
Novel biomarker panel for the early detection of pancreatic cancer using peripheral blood
Jin-Young Jang,Wooil Kwon,Sun-Whe Kim,Do-Youn Oh,Wujin Lee,Joo-Kyoung Park,Jin-Seok Heo,Chang Moo Kang,Song Cheol Kim,Junghyun Namkung,Yongwhan Choi,Youngsoo Kim,Taesung Park 한국간담췌외과학회 2016 한국간담췌외과학회 학술대회지 Vol.2016 No.4