[V. 회원 칼럼] 김성렬 펜싱칼럼(6월호에 이어 연속 칼럼)

김성렬 한국코칭능력개발원 2022 Coach Vol.27 No.3

[Ⅳ. 회원 칼럼] 김성렬 펜싱칼럼

김성렬 한국코칭능력개발원 2022 Coach Vol.27 No.1

[V. 회원 칼럼] 김성렬 펜싱칼럼

김성렬 한국코칭능력개발원 2022 Coach Vol.27 No.2

동해 심해분지 시추퇴적물의 음속과 감쇠계수

김성렬,이용국 한국해양학회 1991 韓國海洋學會誌 Vol.26 No.1

Laboratory studies were carried out to measure the sound velocity (V/SUB p/) and quality factor (Q/SUB p/, inverse attenuation) in the horizontal (H) and vertical (V) direction on the core sampled sediment of deep-sea basin (1,850 meter water depth), East Sea of Korea (Sea of Japan). Sampled core was about 250 cm long and 500 kHz ultrasonic p-wave transducer was used for a sound soured. V/SUB p/ varies from 1,480 m/sec to 1,500 m/sec, it is not clear which direction is faster, V/SUB PH/ or V/SUB pv/, within${\pm}$ 1.0% anisotropy (A/SUB p/). It is thought because the core sediment facies is highly (or slightly) bioturbated homogeneous mud with very high porosity (more than 80%). The general trend of Q/SUB p/ is decreasing 10 to 5 with the buried depth, it is strongly affected by the variation of sediment texture (increasing silt, decreasing clay) with increasing of CaCO$_3$ and organic matter content, But Q/SUB PH/ is jumping up to 14.9 near the bottom of core sediment as including volcanic ash richly. The relationship between V/SUB PH/ and Q/SUB PH/ shows the mirror image nearly, it is interpreted that not only the geotechnical properties and texture but also sea-water characteristics (high Q/SUB p/, low V/SUB p/) according to rich water content affect strongly in the upper part of the unconsolidated deep-sea basin sediment.

Molecular cloning of a novel cecropin-like peptide gene from the swallowtail butterfly, Papilio xuthus

김성렬,최광호,김성완,황재삼,구태원,김익수 한국잠사학회 2015 International Journal of Industrial Entomology Vol.31 No.2

A new cecropin-like antimicrobial peptide (Px-CLP) gene was isolated from the immunechallenged larvae of the swallowtail butterfly, Papilio xuthus , by employing annealing control primer (ACP)-based GeneFishing PCR. The full-length cDNA of Px-CLP is 310 nucleotides encoding a 70 amino acid precursor that contains a putative 22-residue signal peptide, a 4-residue propeptide, a presumed 37-residue mature peptide, and an uncommon 7-residue acidic pro-region at the C-terminus. The deduced amino acid sequence of Px-CLP showed significant identities with other Lepidopteran cecropin D type peptides. RT-PCR revealed that the Px-CLP transcript was detected at significant level after injection with bacterial lipopolysaccharide (LPS). The peptides with or without C-terminal acidic sequence region were synthesized on-solid phage and submitted to antibacterial activity assay. The synthetic 37-mer peptide (Px-CLPa), which removed C-terminal acidic sequence region, was showed exclusively antibacterial activity against E. coli ML35; meanwhile, a 44-mer peptide (Px- CLPb) with C-terminal acidic peptide region was not active. This result suggests that Px-CLP is produced as a larger precursor containing a C-terminal pro-region that is subsequently removed by C-terminal modification

녹두 Lipoxygenase 의 정제 및 특성

김성렬,이희수 한국콩연구회 1988 韓國콩硏究會誌 Vol.5 No.1

유안염석과 column chromatography 및 gel 여과등으로 비활성이 23.4U/㎎이 되는 정제된 mungbean lipoxygenase 를 12%의 수율로 얻었다. 정제효소의 작용최적 pH는 8.4이었으며 linoleic acid를 기질로 사용하였을 때 Km 값은 0.25mM이었다. 정제효소는 pH 5.0∼7.0범위와 50℃이하의 온도에서 비교적 안정하였다. 효소의 활성은 항산화제인 NDGA에 의해 현저히 저해되었고 chelating agents에 의해 저해되었다.

The Racist Implications of The Nigger of the “Narcissus”

김성렬 신영어영문학회 2015 신영어영문학 Vol.61 No.-

The purpose of this essay is to chart the impact of the racism on the 21st-century reader, who, on the whole, is forced into a position of resistance. Two recent critics disagree regarding whether Wait’s portrayal is racially representative. This article argues that Wait is a racist archetype. From the very first moment, the reader is exposed to the racism of the omniscient narrator in terms of the difference of languages spoken by the denizens of India and those of the British sailors. But the main racist ideology that the reader experiences is through the crew’s and the officers’ reaction to Wait, who is especially contrasted with his white peers during the storm scene. The reader is invited to view him prejudicially as an emasculated, helpless black man. He is primarily a heathen. Critically, Wait is cast as the villain of the ship, causing the mutiny, endangering the ship’s discipline and order. The reader is compelled to view Wait as the “hateful” and “unfair” burden. By his racist portrayal of Wait, Conrad justifies symbolically the white man’s superior place in the world.

UO2 및 UN 핵연료의 결함 형성 에너지와 결함에서의 Xe의 거동 연구

김성렬,김용은,김희문,박창제,윤연숙 한국물리학회 2013 새물리 Vol.63 No.6

Atomic Xenon one of the fission products of uranium nitride (UN) and uranium dioxide (UO2) in nuclear reactors, diffuses as a gas. We investigated defect formation and xenon mobility in the fuel by using first-principles calculations as implemented in the VASP code. Frenkel defects in uranium were more difficult to find than Frenkel defects in anions and Schottky defects in the UN and the UO2 fuels. Our calculations of the formation energies of extrinsic defects showed that the vacancy formation energies of anions were higher than the vacancy formation energy of the uranium. When xenon diffused in the UN and the UO2 fuels, it preferred sites of vacancy clusters to single vacancies. This means that xenon in Schottky defects site is difficult to remove. 질화물 핵연료 이나 산화물 핵연료 UO2의 핵분열로 생성된 Xe은기체상태로 핵연료 내부에서 확산 된다. 이 Xe기체가 핵연료 내부로확산될 때 핵연료 내부의 결함 위치와 Xe의 이동 양태를 알아보기 위하여VASP 코드를 이용한 제1원리 계산으로 핵연료 내부의 결함 형성 에너지와 Xe의 결합에너지를 계산하였다. 계산 결과는 음이온의 Frenkel 결함이양이온 Frenkel 결함보다 더 쉽게 형성되고, Schottky 결함이 양이온Frenkel 결함보다 더 쉽게 형성됨을 보여준다. 또 격자점의 O, N, U이이탈한 빈격자점 결함이나 격자 간극의 원자결함 형성 에너지 계산결과는O나 N의 빈격자점 형성 에너지가 U의 빈격자점 형성 에너지보다 크게나타났다. Xe이 핵연료 내부로 확산될 때, Xe은 홑 빈격자점보다는무리로 있는 빈격자점에 포획되기 쉽다는 것을 알았다. 계산된 결과들은 Schottky 결함 위치에 Xe이 존재할 가능성이 가장 크며, 이 위치에서Xe이 다른 곳으로 이동하기가 어렵다는 것을 보여준다.

Equivalent Head-down Load vs. Movement Relationships Evaluated from Bi-directional Pile Load Tests

김성렬,정성교 대한토목학회 2012 KSCE JOURNAL OF CIVIL ENGINEERING Vol.16 No.7

The increasing use of bi-directional (Osterberg cell) load tests in piles necessitates a reliable evaluation of the load-movement relationship equivalent to the head-down load test. In this study, the existing evaluation methods were reviewed, and a new method for evaluating the equivalent head-down curve was proposed. This method considers possible situations, such as non-measured axial load distribution along the pile and the existence of residual load distribution. Three cases, in which bi-directional and head-down load tests were performed at the same site, were analyzed in order to validate the proposed method. The results of the case studies showed that the equivalent load-movement curves obtained either without assuming unit shaft resistance distribution or by considering the effect of residual load agreed well with the measured curves obtained from the head-down test. Therefore, the proposed method is recommended for practical use.

후두 편평세포병변에서 Connexin 26의 발현 의의

김성렬,조성일,도남용,이준한,김건형,임성철 대한이비인후과학회 2007 대한이비인후과학회지 두경부외과학 Vol.50 No.5

Background and Objectives: (GJIC) is a mechanism for direct cell to cell signalling and is mediated by gap junctions, which consist of transmembrane proteins caled connexins (Cxs). The authors investigated the role of connexin 26 as a biomarker that helps diagnose laryngeal squamous cel lesions. Subjects and Method:Parafin-embed-ded tissue specimens from 50 patients, who were diagnosed with laryngeal invasive squamous cell carcinoma (n= 15), carcinoma in situ (n= 10), dysplasia (n= 15), and non-neoplastic epithelial hyperplasia (n= 10) between 1993 and 2005, were imunohis-tochemically stained for conexin 26 protein. Results:Intracytoplasmic positive expresion of conexin 26 was found in 100% of invasive squamous cell carcinoma and in 20% of carcinoma in situ. However, in dysplasia and hyperplasia, there were no positive expresions. Moreover, the majority of intercellular or membranous staining tended to decline in dysplasia, carcinoma in situ, and squamous cell carcinoma. Conclusion:lesions can be associated with tumorigenesis and invasion. Further studies are needed to investigate these expressions of connexin 26 and that it may represent more agresive pathology of the larynx. (Korean J Otolaryngol 2007 ;50 :442-7)