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      • KCI등재

        옥수수주정박의 급여가 산란계 생산성에 미치는 효과

        천영주,이학림,신명호,이수기,이봉덕,손찬구 충남대학교 농업과학연구소 2007 농업과학연구 Vol.34 No.1

        A layer feeding trial was conducted for 10 weeks to investigate the effects of the addition of corn distillers dried grains with solubles (DDGS) to layer diets on the laying performance, egg qualities, and yolk fatty acid composition. Nine hundred Hyline Brown layers, 24 weeks of age, were randomly allotted to 20 replicate laying cages, 45 birds per replicate. There were four diet treatments (0, 10, 15, and 20% DDGS), and five replicates per treatment. All experimental diets were prepared to contain iso-protein (17%) and iso-calorie (TMEn 2,780 kcal/kg). The use of DDGS up to 20% level in layer diets did not exert any influence on feed intake, laying rate, total egg mass, mean egg weight, and feed conversion ratio. DDGS did not exert any influence in weight of egg, breaking strength, and color of eggshell. The albumen height and Haugh unit was not influenced by DDGS addition. The yolk color was significantly increased by DDGS supplementation. As the DDGS level increased, the oleic acid content decreased, and the linoleic acid increased (P<0.05). The degree of saturation of yolk fatty acids was not affected by dietary DDGS. The inclusion of DDGS up to 20% in layer diets resulted in the decrease of feed cost per kg without any effect in the laying performance. In conclusion, the use of DDGS up to 20% level in layer diets could replace corn and soybean meal without any harmful effect on the laying performances.

      • 관절염으로 발현한 재발성 다발성 연골염 1례

        엄민식,박원우,서승철,이진호,조주연,최혜영,이찬희,임소덕 白中央醫療院 2005 仁濟醫學 Vol.26 No.1

        Relapsing polychondritis is an uncommon multisystemic disease which is characterized by recurrent episodes of inflammation and progressive destruction of cartilaginous tissue. The cause of relapsing polychondritis is unclear and suspected to be autoimmune pathophysiology. It involves cartilage of nose, vertebra, trachea, peripheral joint as well as structures of eye, heart, blood vessels or inner ear. Auricular chondritis is present in almost all patients, and multiple arthritis, nasal chondritis, saddle nose, eye involvement, laryngotracheal involvement and skin manifestations are also present. We report a case of relapsing polychondritis presented a arthritis with review of literatures.

      • 의약품의 효능별 안전성·유효성 평가에 관한 조사연구(Ⅰ) : 항균제 Antiboiotics

        박윤주,최기환,김동섭,박인숙,정면우,임화경,오우용,강주희,박찬웅,김주일 식품의약품안전청 2001 식품의약품안전청 연보 Vol.5 No.-

        새로운 물질이 개발되어 신약으로 탄생하기까지 많은 시간과 노력, 예산이 필요하다. 최근, 우리 나라에서도, 신약캐발이 어릴고 힘든 분야이지만 새로운 신약개발을 총해 얻어지는 분가가치가 막대함을 인식, 연구에 박차를 가하 있는 실정이다. 본 연구는, 의약품 개발 선진국인 미국 FDA에서 발행하는 참고자료 중 항균제 임상편가에 대한 가이드라인 및 주요 임상적응증별 항균제 기발(지역사획회득성 폐렴, 원내감염성 계렴, 급성기관지염의 2차세균감염, 만성기지염의 급성세균성 악화, 연쇄구균에 의한 인두영 및 편도염 , 단순성 요로감염증, 복합성 요로감염증 및 신우신영, 급성 세균성 부비동옆, 항 바이러스제 개발시 전임상단계에서 고려사항, 항 바이러스제 허가와 된련 잉상적 고려사항, 카레타 괸련 혈류감염)에 있어서의 파이드라인 등의 자료를 소개함으로져, 향후 제약사의 항균제 신약개발 및 허가 신청된 의악품의 전임상차료 및 잉상시험자료의 검토 평가업무에 참고자료로 활용될 수 있을 것이다. Changing or unclear interpretations of clinical trial data needed to demonstrate the effectiveness and safety of antimicrobial drug products have a times led to confusion and frustration on the part of both applicants and division of these drug products reviewers. The FDA published guidance on desing clinical protocols, implementing, and analyzing data from clinical trials for antimicrobial drug products has been presented and additional companion guidances introduced specific issues to individual infections. This document provides applicants and reviewers with minimal information appropriate for the clinical development of routine antimicrobial drug products and identifies issues common to many antimicrobial drug applications. The agency can use the kind of information to determine whether the antimicrobial drug product under study is safe and effective in the treatment of the specific infection studied.

      • KCI등재

        교대로 운전되는 두 개의 UV/광촉매반응기로 구성된 폐가스 처리시스템에서의 광촉매의 비활성화 및 재생 특성

        이은주 ( Eun Ju Lee ),정찬홍 ( Chan Hong Chung ),임광희 ( Kwang-hee Lim ) 한국화학공학회 2021 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.59 No.4

        본 연구에서는 교대로 운전되는 두 개의 UV/광촉매 반응기로 구성된 폐가스 처리시스템의 운전단계와 단계별 광촉매의 비활성화의 상관관계를 사용된 광촉매에 대한 기기분석을 통하여 규명하였다. 선행연구[Lee와 Lim, Korean Chem. Eng. Research, 59(4), 574-583 (2021)]의 광촉매 반응기 시스템 운전에 사용되지 않은 광촉매를 담지한 다공성 SiO<sub>2</sub> 담체(A4), 1회 운전하는 동안 사용되고 재생을 경험하지 않은 광촉매를 담지한 다공성 SiO<sub>2</sub> 담체(A1), 2회 운전에 사용되고 1회 재생된 광촉매를 담지한 다공성 SiO<sub>2</sub> 담체(A2) 및 3회 운전에 사용되고 2회 재생된 광촉매를 담지한 다공성SiO<sub>2</sub> 담체(A3)와, 1차 재생(AD1) 또는 3차 재생(AD3)된 광촉매를 담지한 다공성 SiO<sub>2</sub> 담체에 대한 BET 분석, SEM, XPS, SEM-EDS 및 FTIR 분석 등을 수행하여, 광촉매를 담지한 다공성 SiO<sub>2</sub> 담체의 비활성화 및 재생 특성을 포함하는 특성 분석을 수행하였다. 그 결과로서, 3회 이상의 여러 번 재생을 수행하는 광촉매의 적정 재생 온도를 200℃ 미만으로 도출하였다. 이러한 광촉매의 적정 재생 온도는 BET 분석결과에서 도출된 기공에 흡착된 에탄올 산화분해 중간생성물의 대부분이 완전 분해가 되어 기공이 재생되는 재생 온도와 거의 일치하였다. 특히, XPS 분석 결과는, 선행 연구[Lee와 Lim, Korean Chem. Eng. Research, 59(4), 574-583 (2021)]에서 광촉매 반응기의 첫 번째 운전 후에 광촉매의 미세한 비활성화가 발생하였음을 나타내었다. 또한, XPS 분석 결과는, 선행연구[Lee와 Lim, Korean Chem. Eng. Research, 59(4), 574-583 (2021)]에서 광촉매 반응기의 두 번째 운전에서 비교적 큰 광촉매의 비활성화가 발생하여 첫번째 운전성능보다 약 5%만큼 못 미치는 에탄올과 황화수소 각각의 제거효율을 초래하였으나, 세 번째 운전에서의 에탄올과 황화수소의 제거효율은 두 번째 운전에서의 에탄올과 황화수소의 제거효율 실험 결과와 거의 비슷하였다는 연구 결과와 일치하였다. 한편, AD3를 사용하여 선행연구[Lee와 Lim, Korean Chem. Eng. Research, 59(4), 574-583 (2021)]에서와 같은 광촉매 반응기의 네 번째 운전을 수행할 것을 가정하면, 두 번째 운전에서보다 더 큰 광촉매의 비가역적 비활성화의 발생으로 인하여 에탄올과 황화수소 제거효율이 가장 크게 저하되리라 예상되었다. In this study, the correlation between operating stages of waste air-treating system composed of two alternatively-operating UV/photocatalytic reactors, and the deactivation of photocatalyst used in each operating stage, was investigated by instrumental analysis thereon. The repeated deactivation and subsequent re-generation of photocatalyst used in the waste air treating system of previous investigation performed by Lee and Lim (Korean Chem. Eng. Research, 59(4), 574-583(2021)), were characterized on virgin photocatalyst-carrying porous SiO<sub>2</sub> media (A4), used photocatalystcarrying porous SiO<sub>2</sub> media (A1, A2 and A3) collected from the corresponding photocatalytic reactor upon 1<sup>st</sup>, 2<sup>nd</sup>, and 3<sup>rd</sup> run, respectively, regenerated photocatalyst-carrying porous SiO<sub>2</sub> media upon 1 time-run (AD1) and 3 times regenerated photocatalyst-carrying porous SiO<sub>2</sub> media upon 3 time-runs (AD3) by instrumental analysis including BET analysis, SEM, XPS, SEM-EDS and FT-IR. As a result, the proper regeneration-temperature for deactivated photocatalyst to be regenerated several times (more than 3 times), was suggested below 200℃. Such temperature of deactivated photocatalystregeneration was almost consistent to the one, according to BET analysis, at which tiny nano-pores blocked by adsorbed ethanol-oxidative and degraded intermediates (AEODI), were regenerated to be reopened through almost complete mineralization of AEODI. In particular, the results of XPS analysis indicated an incurrence of insignificant deactivation of photocatalysis upon 1<sup>st</sup> run of UV/photocatalytic reactor (A or C) of the previous investigation. In addition, the results of XPS analysis were consistent with the experimental results of the previous investigation in that 1) deactivation of photocatalyst incurred during 2<sup>nd</sup> run of the UV/photocatalytic reactor (A or C) resulted in decreased removal efficiency, by ca. 5% and 5%, of ethanol and hydrogen sulfide, respectively, compared with its 1<sup>st</sup> run; 2) there was insignificant difference between the removal efficiencies of its 2<sup>nd</sup> run and 3<sup>rd</sup> run. Furthermore, the removal efficiencies of ethanol and hydrogen sulfide for hypothetical 4<sup>th</sup> run of photocatalytic reactor in the previous investigation, using AD3, were expected to decrease, compared with its 3<sup>rd</sup> run, by much more than those for 2<sup>nd</sup> run in the previous investigation did, compared with its 1<sup>st</sup> run.

      • KCI등재SCISCIE
      • KCI등재

        변압기를 적용한 이중퀜치 초전도한류기의 동작특성 분석

        고주찬(Ju-chan Go),나승성(Seung-seong Na),임승택(Seung-taek Lim),임성훈(Sung-hun Lim),고석철(Seok-Cheol Ko) 한국조명·전기설비학회 2016 조명·전기설비학회논문지 Vol.30 No.7

        An SFCL(Superconducting Fault Current Limiter), which has zero impedance characteristic, doesnt have power loss and limits fault current quickly, therefore it plays a rule as a protective equipment. And there are many types of SFCLs. In this paper, we analyzed operating characteristics of a double quench SFCL with a transformer. When a fault current flows on this SFCL, a HTSC(High Temperature Superconducting) element on primary of the transformer is operated and then a HTSC element on secondary of the transformer is operated. We tested this SFCL according to turn ratio and compared a double quench SFCL with series resistance for the SFCL with a transformer. After experiments, we could confirm fault current limiting characteristics of the SFCL with a transformer according to turn ratio. Also operating characteristics and power burden of HTSC element according to application for series resistance and for transformer were verified.

      • SCIESCOPUSKCI등재

        Prediction Models for Suicide Attempts among Adolescents Using Machine Learning Techniques

        Jae Seok Lim(Jae Seok Lim),Chan-Mo Yang(Chan-Mo Yang),Ju-Won Baek(Ju-Won Baek),Sang-Yeol Lee(Sang-Yeol Lee),Bung-Nyun Kim(Bung-Nyun Kim) 대한정신약물학회 2022 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.20 No.4

        Objective: Suicide attempts (SAs) in adolescents are difficult to predict although it is a leading cause of death among adolescents. This study aimed to develop and evaluate SA prediction models based on six different machine learning (ML) algorithms for Korean adolescents using data from online surveys. Methods: Data were extracted from the 2011−2018 Korea Youth Risk Behavior Survey (KYRBS), an ongoing annual national survey. The participants comprised 468,482 nationally representative adolescents from 400 middle and 400 high schools, aged 12 to 18. The models were trained using several classic ML methods and then tested on internal and external independent datasets; performance metrics were calculated. Data analysis was performed from March 2020 to June 2020. Results: Among the 468,482 adolescents included in the analysis, 15,012 cases (3.2%) were identified as having made an SA. Three features (suicidal ideation, suicide planning, and grade) were identified as the most important predictors. The performance of the six ML models on the internal testing dataset was good, with both the area under the receiver operating characteristic curve (AUROC) and area under the precision−recall curve (AUPRC) ranging from 0.92 to 0.94. Although the AUROC of all models on the external testing dataset (2018 KYRBS) ranged from 0.93 to 0.95, the AUPRC of the models was approximately 0.5. Conclusion: The developed and validated SA prediction models can be applied to detect high risks of SA. This approach could facilitate early intervention in the suicide crisis and may ultimately contribute to suicide prevention for adolescents.

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