홍수퇴적토의 식재토양 재활용 연구

조용현,조항문,현재혁,조재범,김갑수 忠南大學校 環境問題硏究所 1997 環境硏究 Vol.15 No.-

In the study , the feasibility of deposit soil in river and stream bed as a substitute for conventional plant soil was investigated through the analysis of soil characteristics and germination growth rate for 75days. Proper mix between samples from different places was compared to optimize the germination and growth rate of plant in the ratio of 2 : 1 and 3 : 1 (sand : deposit). From the results, it could be concluded that the deposit mix 3 : 1 showed most favorable germination and growth conditions for pancy and the deposit containing enough amount of silt and clay components showed most favorable conditions for marigold. Consequently, the feasibility of deposits as a substitutional plant soil was evaluated to be high.

Genome-wide investigation of a Korean synthetic breed, Woori-Heukdon using the Illumina PorcineSNP60K BeadChip

Yong‑Min Kim,Ha‑Seung Seong,Jung‑Jae Lee,Da‑Hye Son,Jin‑Su Kim,Soo‑Jin Sa,Young‑Sin Kim,Tae‑Jeong Choi,Kyu‑Ho Cho,Joon‑Ki Hong,Jung‑Woo Choi,Eun‑Seok Cho 한국유전학회 2020 Genes & Genomics Vol.42 No.12

Background: Woori-Heukdon (KWH) is a Korean synthetic pig breed generated using Chookjin-Duroc (KCD), Chookjin-Chamdon (KCC), and their crossbreds. Currently, there is a severe lack of studies investigating the Korean breed populations including wild boars (KWB) throughout the genome. Objective: This study was performed to investigate the genetic characteristics of Korean pig populations at the genome-wide level. Methods: Using the SNP dataset derived from genotyped and downloaded datasets using the Illumina PorcineSNP60K BeadChip, we compared the genomes of 532 individuals derived from 23 pig breeds to assess the genetic diversity, inbreeding coefficient, genetic differentiation, and population structure. Results: KWB showed the lowest average expected heterozygosity (HE = 0.1904), while KWH showed the highest genetic diversity (HE = 0.02859) among Korean populations. We verified that the genetic composition of KWH, showing USD of 74.8% and KCC of 25.2% in ADMIXTURE analysis. In population structure analyses, KCC was consistently shown to be separated from other pig populations. In addition, we observed gene flow from Western pigs to a part of Chinese populations. Conclusion: This study showed that Korean native pigs, KCC have genetic differences in comparison with Chinese and Western pigs; despite some historical records and recent genetic studies, we could not find any clear evidence that KCC was significantly influenced by Chinese or Western breeds in this study. We also verified the theoretical genomic composition of KWH at the molecular level in structure analyses. To our knowledge, this is the first genomic study to investigate the genomic characteristics of KWH and KCC.

서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

Effects of Extrusion Conditions on Pasting Properties of Potato and Potato : Wheat Flour Mixture

Cha, Jae Yoon,Cho, Yong-Jin,Kim, Chong-Tai,Kim, Chul-Jin,Ng, P. K. W. 한국산업식품공학회 2003 산업 식품공학 Vol.7 No.2

The purpose of this study was to develop extrusion process of fresh potato and to study the effects of extrusion condition on the pasting properties of extruded potato products. The blend of pressed potato and wheat flour and pressed potatoes were extruded at different die exit temperatures (110-160℃) and screw speed of 100 rpm using a twin-screw extruder with conveying, high and low shear screw configuration. The viscosity-related parameters, such as peak viscosity, through, final viscosity, peak time, and pasting temperature of the feed materials and extruded products, were studied using a rapid visco analyzer (RVA). Their water solubility index (WSI) and water absorption index (WAI) were also studied. The peak viscosity, through, final viscosity, and peak time of pressed potato extrudates and potato-wheat flour mixture extrudates decreased as die exit temperature increased. The WSI and WAI of potato products increased as die exit temperature increased. When high shear screw configuration was used, the values of viscosity-related parameters were lower than those when low shear screw configuration was used. The potato-wheat flour mixture products obtained different degrees of depolymerization from fresh potatoes and wheat flour depending on die exit temperature and screw configuration.

Isolation and Characterization of Antimicrobial Substance Macrolactin A Produced from Bacillus amyloliquefaciens CHO104 Isolated from Soil

( Seung Je Lee ),( Jeong Yong Cho ),( Jung Il Cho ),( Jae Hak Moon ),( Ki Deok Park ),( Young Ju Lee ),( Keun Hyung Park ) 한국미생물생명공학회 2004 Journal of microbiology and biotechnology Vol.14 No.3

BLDC 서보 모터용 One-chip DSP 컨트롤러 개발

조정목,김용재,조중선 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

The Resolver usually used in industry is the absolute angle analog sensor that must be in order driving BLDC (brushless DC) motor, and it needs RDC(Resolver-to-Digital converter) for changing the output signal to digital to be applied to the SVPWM(Space Vector Pulse Width Modulation) algorithm. Commonly used S/W RDC needs trigonometric function. What it takes a lot of calculation time of processor is gotten at weak point. In this paper, S/W RDC is realized except trigonometric functions as a result of feedback resolver outputs after filtering using FIR filter. thus, processing time is reduced. So. One-chip DSP Controller operating the Vector Control, RDC, and SVPWM can be designed.

피리딘 치환제와 2-Bromoacetophenone과의 반응에 대한 속도론적 연구

조영재,김용건,김장열,경진범 한양대학교 이학기술연구소 2000 이학기술연구지 Vol.2 No.

메탄을 용매내에서 2-bromoacetophenone과 피리딘 치환체(3-CH3, 3,5-(CH3)2, H, 3-Cl)와의 반응속도를 여러 온도와 농도 조건하에서 전도도법으로 측정하였다. 이 때 반응속도상수는 온도와 피리딘 농도가 증가함에 따라 증가하였으며, 피리딘 치환체에서 치환기의 전자주게 능력이 클수록 반응속도는 증가하였다. 이들 반응속도상수로부터 활성화 엔탈피, ?H≠, 활성화 엔트로피, ?S≠, Hammett 반응상수, p 및 Bsonsted 상관계수, B를 결정하였다. 이 때 ?H≠는 상대적으로 낮은 양의 값을 갖는 반면, ?S≠는 큰 음의 값을 얻었으며, 친핵체의 치환기 효과인 p와 Bronsted 상관계수인 B는 40℃에서 각각 -2.49 및 0.38의 값을 나타내었다. 이러한 결과로부터 본 반응은 dissociative 이분자성 반응으로 진행됨을 알 수 있었다. Kinetics of 2-bromoacetophenone with substituted pyridines (3-CH3, 3,5-(CH3)2, H, 3-Cl) in methanol have been also studied using conductometric method at various temperatures and concentrations. Rate constants are increased with the increment of both temperature and concentration. They are also increased with more electron-donating ability of substituent in nucleophile. The activation enthalpy, ?H≠, the activation entropy, ?S≠, Hammett reaction constant, p and Bronsted coefficient, B are evaluated from the rate constants. The ?H≠ values are positive relatively small while the ??S≠?values are relatively large, and the corresponding coefficients, p and B are -2.49 and 0.38 at 40℃, respectively. From these results, it could be concluded that this reaction proceeds with the dissociative bimolecular pathway.

정신보건관련시설 입원(소)자의 주요 정신장애 유병률 : 전국 20개 시설의 입원(소)자를 대상으로

조성진,조맹제,서동우,함봉진,홍진표,배재남,이준영,이동우,박종익,전홍진,김성주,김용익 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.6

Objectives : One of the objectives of this study is to estimate the prevalence rates of psychiatric diagnoses in the combined populations of psychiatric hospitals, psychiatric nursing facilities and homeless asylums using the Korean version of the Composite International Diagnostic Interview (K-CIDI), which is a comprehensive and fully standardized interview schedule to assess psychiatric disorders for diagnosis. The Other objective is to compare with previously studied prevalence rates of Psy-chiatric diagnoses using the results of this study. Methods : The study subjects, aged from 181o 64 years, were randomly selected from 64,582 institutionalized population of psychiatric hospitals, Psychiatric nursing facilities and homeless asylums as of 30, June, 2001. Twelve trained interviewers administered the K-CIDI to the selected respondents. A total of 1,875 respondents (male 1,194, female 681) completed the interview. Results : The lifetime and one year prevalences of any diagnosis excluding nicotine dependence · withdrawal, anxiety disorder, eating disorder, somatoform disorder were 88.2% (male 88.1%, female 88.3%), and 65.8% (male 62.7%, female 73.7%), respectively. The lifetime and one year prevalences of schizophrenia and other psychotic disorders were 78.5% (male 75.3%, female 83.7%), and 56.8% (male 51.9%, female 64.8%), respectively. The lifetime and one year prevalences of alcohol use disorder (dependence/abuse) were 26.7% (male 37.9%, female 8.3%), and 8.7% (male 12.8%, female 2.1%), respectively. The lifetime and one year prevalences of mood disorder were 18.1% (male 13.5%, female 25.8%), and 10.4% (male 7.2%,female 16.9%), respectively. The lifetime and one year prevalences of schizophrenia and other psychotic disorders were comparable with the 2001 community survey by 1.19% to 1.32%, and 0.51% to 0.61%, respectively. The lifetime and one year prevalences of schizophrenia were also comparable by 0.16% to 0.28%, and 0.16% to 0.25%, respectively. There were no significant changes of prevalence rates when correction were applied to other psychiatric diagnosis. Conclusion : The results of this study could be used for evaluating the distribution of psychiatric diagnoses in mental health related facilities and for planning mental health policies.

제2급 와동에 충전된 Compomer의 미세누출에 관한 연구

조용범,임재훈 大韓齒科保存學會 1999 Restorative Dentistry & Endodontics Vol.24 No.2

다중마커를 이용한 수화인식기법

조재현,엄성용 서울여자대학교대학원 1998 論文集 Vol.- No.6

Sign Language is one means of communication for hearing-impaired people. Words and sentences in Sign Language are mainly represented by hand's gesture. Recently, need for the intelligent human-computer interface has been increased and the hand gesture cognition is an important application in the human-computer interface. In this thesis, we propose a new scheme for effective Korean Sign Language(KSL) cognition. In this system, hand shape and position data are inputted using white glove which is attached the multiple markers. It is better than the existing ones in that it does not need expensive equipments such as Data-Glove and it could allow fast and exact cognition. The proposed technique is devised for Korean Sign Language, but it would be easily extended to the general hand gesture cognitions. Some experimental results are given to show that our method works well for Korean Sign Languages.