정수처리 공정에서 철과 망간 잔류 농도에 관한 연구

최미리,서규태,문병현,이택순 7개 국립대학교 환경연구 논문집 공동발행 위원회 2003 공업기술연구 Vol.3 No.-

This study was to investigate the cause of the color and turbidity in a small-scale water treatment plant using lakes water as water supply source. Water qualities in aqueducts, in depth of the lakes and in each process were measured. And effects of prechlorination on each unit operation in the water treatment, especially on iron and manganese removal, were studied. The concentration of iron and manganese was 0.13, 0.08 mg/L in the surface water and 1.93 and 0.433 mg/L in 15 m depth of the lake. Higher iron concentration of the inlet was measured to 5.35 mg/L which was caused by the steel aqueduct corrosion. The optimun coagulation dosages of Poly Aluminum Chloride(PAC) and Liquid Aluminum Sulfate (LAS) were 17.5 mg/L and 35 mg/L. Pretreatmnet of raw water with CaCOl improved the removal efficiencies of iron and manganes. However, more efficient method for removing iron and manganes was required.

Methotrexate 치료를 받고 있는 활동성 류마티스 관절염 환자에서 etanercept의 유효성과 안전성에 관한 연구

최병렬,강태영,정청일,이혜순,엄완식,김태환,전재범,유대현,배상철 대한내과학회 2004 대한내과학회지 Vol.66 No.5

목적 : 류마티스 관절염을 앓고 있는 한국인 중에 기존 DMARDs로 치료 실패하였고, 고정용량의 MTX를 복용하고 있는 환자들에 있어서 etanercept의 유효성과 안전성을 평가하고자 하였다. 방법 : 기존 DMARDs로 치료 실패한 활동성 류마티스 관절염 환자 76명을 대상으로 하여 단일군, 공개시험을 하였다. 대상 환자들은 고정용량의 MTX를 복용하면서 etanercept 25 mg을 1주일에 두 번 피하 주사하였으며 12주간 투여하였다. 유효성은 ACR 20, ACR 50,조조강직 시간으로 평가하였고, 약제의 안전성은 이상반응 등으로 평가하였다. 결과 : 대상 환자는 총 76명으로 평균 연령은 45.2세, 남자 5명, 여자 71명이었다. 84.4%인 54명이 12주째에 ACR 20을 만족하였고, 53.1%인 34명이 12주째에 ACR 50을 만족하였다. 조조 강직 시간은 치료 전 203.3분에서 치료 12주째 42.6분을 평균 74.5% 호전되었다. 가장 흔한 이상반응은 주사부위 반응이었다. 이외에도 상기도 감염, 오심, 안면부종 등이 발생하였으나 심각한 부작용은 없었다. 결론 : etanercept는 효과적이고, 안전한 류마티스 관절염 치료 방법이며 특히 MTX치료에도 불구하고 활동성인 류마티스 관절염에 기대되는 치료라고 할 수 있다. Background : This study was performed to investigate the efficacy and safety of etanercept in active rheumatoid arthritis patients with stable dose of methotrexate in Korean. Methods : In a 12 week, single arm, open trial, we assigned 76 patients with active rheumatoid arthritis who had an inadequate response to disease-modifying antirheumatic drugs. Patients received twice-weekly subcutaneous injections of etanercept 25 ㎎ while containing to receive methotrexate at a stable dose of 7.5~25 ㎎ per week. The clinical response was defined as the percent improvement in disease activity according to the criteria of the American Collage of Rheumatology (ACR) at 12 weeks. Results : Etanrecept led to significant improvements in disease activity and was safe and well tolerated. At 12 week, 84.4% of the patients receiving 25 ㎎ of etanercept achieved a 20% ACR response, and 53.1% of those receiving etanercept achieved a 50% ACR response. The most common adverse event was injection-site reaction. Other advanse events were upper respiratory infection, nausea, and facial edema, but there were no serious adverse events associated with etanercept. Conclusion : In active rheumatoid arthritis patients, etanercept was safe, well tolerated, and provided rapid clinical improvements.

남성 건강검진 수진자에서 간기능 장애 및 비알코올성 지방간과 대사 증후군과의 관련성

최태성,유재영,김진석,장은철,박주언,김병익 순천향의학연구소 2006 Journal of Soonchunhyang Medical Science Vol.12 No.2

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ZMP를 이용한 굴삭기의 안정성에 관한 연구

최종환,엄혁,임태형,김승수,양순용,이병룡,안경관 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-

The hydraulic excavator has been a popular research object for automation because of its multi-workings and economic efficiency. When it works crane tasks, most of disasters happen. The stability of the excavator having crane function has a close relation with excavator's posture, motion and load. In this paper, the stability of tipping-over has been analysed using Zero Moment Point(ZMP),

선반 기어박스의 기어열 - 축계 진동 해석 및 저감에 관한 연구

최영휴,박선균,배병태,정택수,김청수 한국공작기계학회 2001 한국공작기계학회 춘계학술대회논문집 Vol.2001 No.-

In this study, torsional and lateral vibrations of a gear box transmission system were analyzed theoretically using some mathematical models and examined to determine the causes of its excessive vibrations. As the results, it was found there exist possibility of resonance between gear mesh frequencies and lateral vibration mode of the transmission shaft during the third shifting mode operation. In order to avoid this resonance, we proposed changing the arrangement of gears on the transmission shaft. The measured vibration levels of the improved gear box were dramatically reduced. These results may be helpful to design a machine tool gear box with low noise and vibration.

한국산 닥나무류의 해부학적, 화학적 성질 및 펄프화 특성

최태호,조남석,김병로 충북대학교 농업과학기술연구소 1991 農業科學硏究 Vol.9 No.2

This study was carried out to investigate the papermaking characteristics for New Hanji (Korean Paper) products from paper mulberries. So far the bast fibers of paper mulberry species have been used as raw materials for Hanji. But, in this study, bast fibers, woody parts and whole woods are attempting for being utilize as new raw materials for special Hanji. Anatomical and chemical properties of 3 paper mulberry species and their pulping characteristics were discussed.

韓國에서의 社會再適應評價尺度에 관한 豫備的 硏究

최태진,강병조 大韓神經精神醫學會 1981 신경정신의학 Vol.20 No.2

For a preliminary study of a social readjustment rating scale for Korea, 623 individuals over 16-years of age were randomly selected and questioned by a paper and pencil method in Taegu area from May 1980 to August 1980. A scale consisting of 54 items was made ranging from the highest score, death of spouse, to the lowest score, change of residence. Of all the differences between this study and the studies in America, it was notable that, in Korea, higher stress scores were given for child care concerns and problems with in-laws, while a lower score for retirement compared with the studies in America. Female showed higher scores than males and responded particularly sensitively on the problems about marriage. The teenage group and unmarried group noted high stress scores on those problems of sex, study, and peer relationship. Finally the author suggested to do further studies in this field comparing the difference of the Eastern and Western cultural climates.

경남지역 근로자의 운동참여실태와 직무 및 생활만족도

최태석,조병훈 창원대학교 체육과학연구소 1999 경남 체육연구 Vol.4 No.2

본 연구는 경남지역 근로자들의 기업형태와 직종별 운동참여 실태를 알아보고, 운동 참여별 직무만족도와 생활만족도를 분석한 것이다. 연구 대상은 1998년 경남지역 대기업 및 중·소기업에 근무하는 사무직, 생산직 근로자들을 무선표집 방법(random sampling)을 이용하여 604명을 대상으로 하였으며, 연구목적 및 변인에 적합하게 작성된 질문지를 이용하여 행하여졌다. 연구 분석에 쓰인 통계방법은 카이스퀘어 검정, 변량분석, 사후검정 등이다. 이상의 연구 방법을 통하여 밝혀진 결과는 다음과 같다. 1. 연령별 1회 운동시간과 운동참여 기간은 차이가 있었다. 2. 교육 수준별 운동참여 횟수는 차이가 있었다. 3. 근무 연수별 운동 참여 기간은 차이가 있었다. 4. 기업형태와 직종별 운동참여 횟수, 1회 운동시간, 운동참여 기간은 차이가 없었다. 5. 기업형태별 생활 만족도는 차이가 있었고, 직종별 생활 만족도 및 기업형태와 직종별 직무 만족도는 차이가 없었다. 6. 운동참여 횟수, 1회 운동시간, 운동참여 기간별 생활 만족도는 차이가 없었으며, 1회 운동시간, 운동참여 기간별 직무 만족도는 차이가 있었다. 이상의 결론을 종합해 볼 때 지속적인 운동참여에 의하여 근로자들의 직무만족 및 생활만족을 증진시킬 수 있다는 것을 시사하는 것이다.

Peroxiredoxin V Regulates Aco2, Acadm, and Acox1 Activity in Hypoxic Kidney

Tae‐Hoon Lee,Hee‐Young Yang,Joseph Kwon,Hoon‐In Choi,Lina Ren,Ung Yang,Byung‐Ju Park,Zae Young Ryoo 한국동물생명공학회(구 한국동물번식학회) 2011 발생공학 국제심포지엄 및 학술대회 Vol.2011 No.1

Peroxiredoxin V, an atypical thioredoxin peroxidase, is widely expressed in mammalian tissues. In addition, Prdx V is localized in mitochondria, peroxisome, cytosol, and nucleus. Prdx V has been reported to protect a wide range of cellular environments as antioxidant enzyme, and its dysfunctions may be implicated in several diseases, such as cancer, inflammation, and neurodegenerative disease. Identification and relative quantification of proteins affected by Prdx V may help identify novel signaling mechanisms that are important for oxidative stress response. However, the role of Prdx V in the modulation of hypoxia‐related cellular response is not studied yet. In order to examine the function of endogenous Prdx V in hypoxic condition in vivo, we generated a transgenic mouse model with Prdx V siRNA expression controlled by U6 promoter. Of many tissues, the knockdown of Prdx V expression was displayed in kidney, lung, and liver, but not spleen and skin. We conducted on the basis of nano‐UPLC‐MSE proteomic study to identify the Prdx V‐affected protein networks in hypoxic kidneys. In this study, we identified protein networks associated with oxidative stress, fatty acid metabolism, and mitochondrial dysfunction. Our results indicated that Prdx V affected to regulation of kidney homeostasis under hypoxia stress.

21C 신지식인 양성을 위한 EQM 시스템 구축

최병태,이형민,전상봉,서승교,이우언,백종현 대구산업정보대학 2001 논문집 Vol.15 No.-

The aim of this paper is to form and to operate EQM, to say education quality management. In order to achieve the above stated purpose, the paper hypothesizes that there are similarities between enterprises and colleges in quality management. The basic method of the paper is systematic approach, modifies TQM, which is total quality management. The result is that EQM program must form and operate the feedback system for teaching and learning effect, the PSMT(project, self-study, media, team unit style teaching and learning) as a new teaching and learning method, and the digital system as an advanced mechanism, in education quality management.