컨테이너 검색기 이송대차 추진용 선형 유도전동기의 2차측 리액션플레이트 재질에 따른 특성 연구

정재훈(Jae-Hoon Jeong),최장영(Jang-Young Choi),성소영(So-Young Sung),박종원(Jong-Won Park),임재원(Jaewon Lim) 대한전기학회 2016 전기학회논문지 Vol.65 No.1

This paper presents the analysis of the analysis of thrust characteristics of linear induction motors(LIMs) according to secondary reaction plate. LIMs are well known as high speed transport systems, which can obtain thrust directly without gears and links, or auxiliary mechanisms. A simple structure, easy maintenance, and less environmental pollution are advantages of LIMs. In transport systems using LIMs, the secondary reaction plate is an important design factor, because it has considerable impact on the cost of the railway as well as the performance of the LIMs. This paper deals analyzed the characteristics of linear induction motor used for moving the vehicle of container scanner. Thrust, efficiency and load characteristic were interpreted with FEM regarding two models whose material of secondary reaction plate was copper and aluminum. It suggested the interpretation of thrust, efficiency and power factor characteristic along slip and compared the operation ability of linear induction motor through characteristics analysis along the load.

녹차 및 결명자 추출물의 교정용 브라켓과 치면 사이의 경계부에서 분리된 mutans streptococci에 대한 항균작용

임성훈,서정순,윤영주,김광원,유소영,김화숙,국중기,이병래,차종희,박재윤 대한치과교정학회 2003 대한치과교정학회지 Vol.33 No.5

본 연구는 치아우식증에 관련된 Mutans streptococci 표준균주 및 임상분리 균주의 성장억제를 유도할 수 있는 천연 생약추출물을 검색하기 위하여 실시되었다. 녹차추출물은 CHMC-2032를 사용하였으며, 결명자 추출물은 50% 에탄올을 이용하여 얻었다. 이들 추출물의 Mutans streptococci 표준균주 및 교정환자들에서 브라켓과 치면 사이의 경계부에서 분리된 각각 10 균주씩의 S. mutans 및 S. sobrinus에 대한 최소성장억제농도를 액체배지 희석법으로 구하였다. 그 결과 CHMC-2032의 S. mutans 및 S. sobrinus의 표준 균주, S. sobrinus의 대부분 임상분리 균주에 대한 최소성장억제농도는 5 mg/ml이었다. 그러나 결명자 추출물에 의한 S. mutans 및 S. sobrinus에 대한 세균 성장억제 효과는 미미하였다. 본 연구 결과 치아우식증의 예방적 측면에서 결명자차보다는 녹차를 마시는 것이 유리하며, CHMC-2032를 이용하여 구강양치용액을 제조하여 사용할 경우 교정환자를 포함하여 대부분의 사람에게서 치아우식증 예방 효과가 있으리고 추정된다. Mutans streptococci is the major causative factor in dental caries. Especially, orthodontic patients with fixed appliance are a risk group for dental caries. Because fixed appliances attached on teeth may change the environment of dental plaque, the enamel decalcification or dental caries around the bracket and band is a major side effect of orthodontic treatment. The aim of this study was to search plant extracts that have antimicrobial effect on mutans streptococci. Seed-extract of Casio tora were prepared with ethanol and CHMC-2032, the leaf-extracts from Camellia sinensis extract, was obtained extract, 2 type strains and 20 clinical isolates of mutans streptococci isolated from the interface between orthodontic brackets and tooth surfaces in the orthodontic patients were used in this study. The minimal inhibitory concentration of CHMC-2032 was 5 mg/ml on the S. mutans KCTC 3065, S. sobrinus KCTC 3088, and 8 clinical isolates of S. sobrinus. However, there was no antibacterial effect of seed-extract of C. tora on mutans streptococci. These data suggest that green tea may be more effective than the tea prepared from C. tora in the prevention of enamel decalcification or dental caries around brackets.

DMSⅡ에서의 Audit Trait을 이용한 Crash Recovery

임승인,이종근 國立 昌原大學校 産業技術硏究所 1988 産技硏論文集 Vol.2 No.-

The use of audit trail to provide recovery from failures in database systems is well known. DMSⅡ is a database management system of Burroughs computer system and use the audit trail to crash recovery. This study has surveyed and analyzed the crash recovery using audit trail in DMSⅡ under on-line, Real-time processing environment. The contents of main memory are lost after system crash. The proposed approach to solving the recovery problems using audit trail is based on concept of 'Log write ahead protocol' and characteristic of stable storage with sequential file organization. Some application programs write received message from remote terminal into sequential disk file and request to database management system to process it. After crash recovery by DMS Ⅱ, application program use the logged file to recovery until last transaction in database system.

家蠶에 寄生하는 Nuclear-Polyhedrosis Virus와 새로운 Microsporidia(Nosema sp. M_12)間의 相互作用

林鍾聲,韓明世 경북대학교 1981 새마을 硏究論叢 Vol.1 No.-

In the application of infectious microorganisms of insects to microbial control the interaction among those pathogens has been considered to be very important factors in causing synergism or intereference. In these respects this research was concentrated on the interaction between the nuclear polyhedrosis virus(NPV) and a newly isolated microsporidia, Nosema sp.(M_12) in the larvae of silkworm, Bombyx mori(L.), including comparisions of their pathogenecity and histopathological symptoms. The interference was observed between the two pathogens were incoculated per os to the second-instar larvae of the silkworm at the same time. In the response of the interaction the degree of interference by was greater than that by the NPV. However, the former pathognn M_12 was not interfered by the challanging NPV while the former NPV was considerably interfered by the challanging M_12 when they were inoculated per os at the intereval of 24 hours at the second-instar larvae. In the histopathological observations the sites of inteference were observed in some tissue like fat body or cell unit though one of the pathogens was dominant in each tissue. From the point of microbial control views it is neither recommendable to use NPV and M_12 at the same time nor the same areas in the case of both pathogens to be used as a microbial insecticide.

백서의 실험적 치아이동시 connexin 43의 발현에 관한 연구

임정현,강경화,이종진,김은철,김상철 대한치과교정학회 2001 대한치과교정학회지 Vol.31 No.5

치아이동시 골세포간 활성 조화에서 세포간 교통의 중요성이 차츰 인식되고 있으며 세포간 교통을 위한 교통반의 존재가 확인되고 있다. 동물실험 모델에서 실험적 치아이동을 통해 조성된 압박 및 견인측 치주인대에서 교통반 단백의 일종인 connexin 43의 발현을 관찰함으로써 인접 연조직 및 골 조직 내에서 세포 신호 전달 양상의 한 부분을 파악하고자 하였다. Sprague-Dawley계 백서 27마리를 대조군(3마리)과 실험군(24마리)으로 나누었으며, 실험군은 견인력(75g)을 가한 후 12시간, 1일, 4일, 7일, 14일, 28일이 경과한 후 각각 4마리씩 희생시켜, connexin 43의 발현을 면역조직화학적으로 관찰한 바 다음과 같은 결과를 얻었다. 1.대조군에서의 connexin 43 발현은 치은, 상아질, 치주인대, 치수, 골세포에서 경미하였다. 2.교정적 치아이동에 반응하는 치수, 치주인대, 골모세포, 파골세포, 골세포부위에서 connexin 43의 발현이 많았으나 치은, 상아질, 상아모세포에서의 발현은 견인력 적용기간에 관계없이 대조군과 큰 차이가 없었다. 3.치수에서 connexin 43의 발현은 교정력을 가한 4일에서부터 증가하여 7일째까지 크게 증가한 후 14일째부터 감소되었으며 28일째에는 대조군과 차이가 없었다. 4.치주인대에서 connexin 43의 발현은 주로 혈관을 중심으로 치조골 면을 따라 압박측에서 주로 나타났는데 교정력을 가한 12시간에서부터 증가하여 4일에서 가장 많은 발현을 보인 후 7일부터 감소하기 시작하였다. 5.골모세포 및 골세포에서 발현은 실험 1일째부터 출현해 4일째에 가장 많은 발현을 보였고 7일 이후에는 크게 감소하였으며 파골세포에서의 발현은 골모세포와 골세포보다 실험 4일째에 더 많이 관찰할 수 있었다. Bone remodeling in response to force requires coordinated actions of osteoblasts, osteoclasts, osteocytes, and periodontal ligament cells. Coordination among these cells may be mediated, in part, by cell-to-cell communication via gap junctions. This study was designed to evaluate the expression of gap junction, connection 43 in periodontal tissue during the experimental movement of rat's incisors, by LSAB(labelled streptavidine biotin) immunohistochemical staining fort connexin 43. Twenty seven Sprague-Dawley rats were divided into a control group(3 rats), and 6 experimental groups(24 rats) where 75g of force was applied from helical springs across the maxillary incisors. Rats of experimental groups were sacrificed at 12 hours, 1, 4, 7, 14 and 28 days after force application, respectively. And the tissues of a control group and experimental groups were studied immunohistochemically. The results were as follows : 1.In control group, the expression of connexin 43 was rare in gingiva, dentin, cementum, periodontal ligament and bone cells. 2.In experimental group, the expression of connexin 43 was increased in pulp, periodontal ligament, osteoblasts, and osteoclasts, comparing to that in control. And it was rare in gingiva, dentin, and odontoblasts regardless of the duration of force application, which was not different from that of control group. 3.The expression of connexin 43 in pulp of experimental group began to increase in 4-day after force application and got to the highest degree at 7-day. And it decreased after 14-day to be similar to that of control group at 28-day. 4.The expression of connexin 43 in periodontal ligament was noted in small capillaries adjacent to alveolar bone, showing higher intensity of immunolabelling after 4-day. And it was stronger in the pressure side than in tension side of periodontal ligament. After 7-day, decrease in connexin 43 expression was observed. 5.The expression of connexin 43 in alveolar bone began to increase 1-day, reached to the highest degree at 4-day, and decreased at 7-day. And the expression in osteoclasts was more than that in osteoblasts or osteocyte at 7-day.

액체크로마토그래피/질량분석법을 이용한 랫트 혈장내의 Surfactin C의 정량법에 관한 연구

임종환,김명석,이동연,이상훈,백경진,김태원,정두순,박병권,윤효인 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

Surfactin isolated from Bacillus subtilis has a strong surface tension-lowering activity, together with antiviral, antitumor, fibrinolytic and hypocholesterolemic activities. LC/MS is a simple, rapid and effective technique for the determination of surfactin C in rat serum. The separation of surfactin was achieved on reverse phase column. The mobile phase consisted of 0.1% trifluoracetic acid in water (A) and acetonitrile (B). As a result of analysis of blank rat serum samples, matrix interference was not shown. The values of precision and accuracy were satisfied w the guideline. A newly developed LC/MS method for the determination of surfactin C was successfully applied in its pharmacokinetic analysis.

연약점토상 자갈성토지반에 대한 반복재하시 지반의 거동에 관한 연구

임종석,정상균,하혁 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

When the band load effects on the surface of soil ground, the characteristics of underground stress vary from the equipment load and the ground condition. The experimental data of the underground stress occurring on the weak stratum can be more accurate on the estimation by running the equipment and these can be applied to a counterplan for the improvement of appropriate construction equipment.

연속식 오존처리공정을 이용한 낙동강 상수원수의 정수처리 효과

임영성,강관호,이홍재,서동철,박문수,허종수,조주식 한국환경농학회 2002 한국환경농학회지 Vol.21 No.3

낙동강 상수원수를 대상으로 연속적 오존처리에서 오존주업농도에 따른 유기물 분해 특성을 조사하기 위하여 오존처리에 의한 DOC성분변화, UV254/DOC의 변화와 소비오존에 따른 DOC 제거효율을 조사한 결과는 다음과 같다. 유입원수의 수질변화에 따라 다소 차이는 있었으나 전반적으로 오존주입농도가 증가할수록 DOC 처리효율도 증가되었다. 오존처리에 따른 DOC 성분변화는 전오존을 3 mg/L농도로 처리시 TDOC, ADOC, A&BDOC 및 NRDOC는 각각0.6, 0.2, 0.1 및 1.0 mg/L 정도 오존처리에 의하여 감소되었으나 BDOC는 0.8 mg/L 증가하였다. UV254/DOC의 분율은 오존주입농도를 1, 3 및 5 mg/L 처리하였을 때 전오존의 경우는 각각 0.048, 0.044 및 0.037 이였고, 후오존의 경우는 각각 0.018, 0.015 및 0.012로 나타나 오존주입농도가 증가할수록 감소하는 경향을 보였다. 초기 DOC mg당 소비되는 오존량에 대한 DOC 제거율은 전오존과 후오존처리의 초기 DOC에 대한 소비오존량이 각각 약 1.5와 2.3일 때 각자 25%와 32%로서 최대의 DOC 처리효율을 나타내었다. 낙동강 상수원수에 전오존을 처리할 경우 오존주입량은 초기 DOC mg당 소비된 오존이 1.5 mg 이내의 농도가 되도록 주입하고, 후오존은 유입수인 모래여과수의 초기 DOC mg당 소비된 오존이 2.3 mg이내의 농도가 되도록 조절하여 주입하면 적당할 것으로 생각되었다. This study was carried out to evaluate the pollutant removal efficiencies of the advanced drinking water treatment using ozonation process. For raw water. Nakdong River was used. By conducting continuous ozonation experiments, the following results were obtained. Efficiency of water treatment was enhanced with increase in ozone dosage. When ozone dosage of 3 mg/L was used, preozonation of raw water reduced TDOC, ADOC, A&BDOC and NRDOC as much as 0.6 mg/L, 0.2 mg/L, 0.1 mg/L and 1.0 mg/L, respectively. On the other hand, content of BDOC Increased at the level of 0.8 mg/L. Ratio of UV254 absorbance to DOC content by the preozonation with 1, 3 and 5 mg/L dosage were 0.048, 0.044 and 0.037, respectively. In case of postozonation, it were 0.018, 0.015 and 0.012, respectively. When the ratios of consumpted ozone content to 1 mg of initial DOC were 1.5 and 2.3 in preozonation and postozonation treatment, respectively, the highest DOC removal rates of 25% and 32% were obtained by the continuous ozonation.

勤勞者의 建康과 Sports 意識 調査 硏究 : Centered on the Industries in Chum Buk Province 全羅北道 企業體를 中心으로

成鐘林 圓光大學校 1986 論文集 Vol.20 No.2

본 연구논문은 코오넬 의학지수(C.M.I)를 적용한 건강실태와 스포츠 의식조사를 신체적 및 정신적 호소반응 빈도를 남녀별, 직종별 코오넬 지수와 남·녀 생산직 및 사무직별 각 항목간의 상관계수와 스포츠의식에서 체험했던 즐거움, 스포츠의 과거의경험, 스포츠에서 얻은 효과를 생산직과 사무직으로 응답비율을 조사한 결과 1. 남자의 경우 신체적 호소반응은 소화기 계통에서 생산직이 3.788, 사무직이 5.894, 정신적 호소반응은 부적응에서 생산직이 2.026, 사무직이 2.422로 가장 높게 나타났으며 여자의 경우 신체적 호소반응은 소화기 계통에서 생산직이 3.732, 사무직이 2.986으로 가장 높게 나타났다. 2. 남녀별에 따른 직종별 상관계수는 남자의 생산직의 경우 신체계통간의 상관은 심장 혈관 계통과 소화기 계통이 r=0.842의 높은 상관을 보였고 사무직의 경우 신체계통간에는 심장계통과 소화기계통이 r=0.915로 가장 높게 나타났고 여자 사무직의 경우 정신계통간에는 분노와 긴장이 r=0.703으로 높은 상관을 나타냈다. 3. 스포츠 의식에서 체험했던 즐거움은 남자의 경우 1-(11) 문항에 1) 생산직이 73.9%, 사무직이 61.1%, 여자의 경우 생산직이 1-(2)문항에서 67.9%, 사무직은 1-(11)문항에서 50.8%로 가장 높은 응답비율을 나타냈다. 2) 스포츠의 과거의 경험에서 남자의 경우 2-(12)문항에 생산직이 86.3%, 사무직이 82.3%, 여자도 역시 2-(12)문항에서 생산직이 83.9%, 사무직이 67.6%의 가장 높은 응답비율을 나타냈다. 3) 스포츠에서 얻은 효과는 남자의 경우 생산직은 3-(13)문항이 62.7%이고 사무직은 3-(4) 문항이 57.8%, 여자의 경우 생산직이 3-(4)문항에서 50.7%로 가장 높은 응답비율을 나타냈다. This thesis studied the frequency of physical and mental response, the correlation between Items, and the consciousness about sports, classified by occupation with distinction of sex, though the research of the heath condition by Cornell Medical Index. The results as follows: 1. The physical response of man, classified by occupation, on the health condition was represented as the highest one(blue color-3.788, white color-5.894) in the digestive systems, and so did the mental response (blue color-2.026, white color-2.422) in inflexibility. The physical response of woman was represented as the highest one (blue color-3.732, white color-2.986) in the diqestive systems. 2. The Correlation Classified by Occupation with Distinction of Sex in the case of man, the heart system and the digestive system in the correlation between physical systems were represented as the highest one such as blue color(r=0.842) and white color(r=0.915) while, in the case of woman of white color, anger and tension in the correlation between mental systems were represented as a high one (r=0.703). 3. The actual condition of the Consciousness about sports 1) In point of pleasure experienced from sports, man expressed the the highest percent response (blue color-73.9%, white color-61.1%) about the question 1-(11), and did so woman of blue color(67.9%) about the question 1-(2) and whitle color (50.8%) about the question 1-(11). 2) In point of the past experience about sports, man expressed the highest percent response (blue color-86.3%, white color-82.3%), and so did woman(blue color-83.9%, White color-67.6%), about the question 2-(12). 3) In point of the effect obtained from sports, man expressed the highest percent response such as blue color(62.7%) about the question 3-(13) and white color(57.8%) about the question 3-(4), and did so woman of blue color(50.7%) about the question 3-(4).

낙동강 상수원수의 오존처리 효과 : II. 회분식 오존처리에 의한 휘발성유기화합물 및 조류제거 효과 II. Removal of VOCs and Algae in Raw Water by Conducting Batch Test of Ozonation Experiments

임영식,이홍재,이도진,허종수,손보균,조주식 한국환경과학회 2002 한국환경과학회지 Vol.11 No.12

This study was carried out to evaluate the pollutant removal efficiencies of the advanced drinking water treatment using ozonation process. For raw water, Nakdong River was used. By conducting batch test of ozonation efficiencies of the ozonation were 94 to 92%, respectively. Removal efficiencies of single VOC compound or mixed VOC compounds in the raw water were 80% to 90% by the ozonation with 2 mg/ℓ dosage and 10 minutes contact time. Removal efficiencies of ABS by the ozonation with 1 mg/ℓ, 3 mg/ℓ dosage and 20 minutes contact time were 83% to 96%, respectively. Almost 67% of chlorophyll-a at the concentration of 38.㎍/ℓ was removed by ozonation at ozone dosage of 1mg/ℓ for 20 min. considering the efficiency of ozone utilization and water treatment, the most effective ozonation could be obtained with high ozone dosage and short and short contact time.