Correlation Between Primary Si and Silicide Refinement Induced by Ultrasonic Treatment of Multicomponent Al–Si Alloy Containing Ti, Zr, V, and P

Jae‑Gil Jung,Young‑Hee Cho,Tae‑Young Ahn,Jae‑Hee Yoon,Sang‑Hwa Lee,Jung‑Moo Lee 대한금속·재료학회 2019 METALS AND MATERIALS International Vol.25 No.5

The correlation between primary Si and silicide refinement induced by ultrasonic treatment (UST) of multicomponent Al–Sialloy containing Ti, Zr, V, and P was investigated. UST significantly refined the primary Si phase owing to cavitation-inducedwetting and deagglomeration of MgAl2O4particles. Lowering the UST finish temperature caused deterioration of the degreeof primary Si refinement, instead leading to silicide refinement. Cavitation-induced silicide nucleation on wetted MgAl2O4consumed the MgAl2O4particles, particularly in the case of primary Si nucleation. Similarly, the formation of an AlP phaseon the silicide phase reduced the nucleation efficiency of the AlP phase. Poisoning of the MgAl2O4and AlP phases by thesilicide phase was responsible for the deterioration in primary Si refinement. Room-temperature tensile strength and hightemperatureelongation were increased by UST and were dependent on the size of primary Si.

한국어 교실 교사-학습자 간 대화에 나타난 교사 중심적 의사소통 양상

진제희(Jin Jae-Hee) 한국사회언어학회 2004 사회언어학 Vol.12 No.2

Jin, Jae-Hee. 2004. Aspects of Teacher-centered Communication in Conversations between Teachers and Learners in the Korean Language Classroom. Sociolinguistic Journal of Korea, 12(2). This paper examines how and why asymmetrical relationships are constituted through verbal interactions between teachers and students in the Korean language classroom. According to van Dijk (1989), 'power' in institutions such as hospitals or classrooms is best conceptualized as ‘group power asymmetrical relations’ between groups. As is the case for institutional members, members of dominant groups may derive their individually exercised power from the overall power of the group to which they belong. Speakers often possess an institutional role and their conversations are backed by the power or authority of the institution. From this perspective, this paper examines how power is being exerted and assigned in conversations between teachers and students in the Korean classroom. First, this research examined if the turns at talk for the participants (teacher and students) were equally distributed. The results showed that the teacher took about 50% of the total turns at talk, which is about eight times as many turns taken by each student. This indicates that the flow of classroom conversation starts from the teacher, or in other words, is teacher-centered communication. Second, this research considered inequality that occurs during problem solving meaning negotiation. Research results also showed that in 165 negotiated exchanges, over 85% were initiated by the teacher, which underscores the extremely asymmetrical instigation of conversation in Korean language classrooms. Student deficiencies in fluency and initiation, teacher questioning methodology and dialogue guidance, the teacher's almost exclusive right to choose the topic, the excessive adaptation of students to the classroom environment as well as the nationality of students were all factors contributing to this phenomenon.

대통령 연설문에 나타난 사회언어학적 의미 연구 - 페어클로의 비판적 담화분석을 중심으로 -

김재희 ( Kim Jae Hee ) 한국텍스트언어학회 2018 텍스트언어학 Vol.44 No.-

This paper examines Korean presidential speeches by looking at concealed ideology from the viewpoint of Fairclough`s Critical Discourse Analysis(CDA). To this end, I analyzed the intention behind a number of speeches, focusing on the use of various personal pronouns (we / (all of) you / you / I) in the speeches of President Moon Jae-in. For analysis of the discourse effect on vocabulary selection, I looked at the words used in the inaugural address of President Moon Jae-in and at what language means he used to communicate his intention effectively. For example, he conveyed his message through the premise, intertextuality. The value of this paper lies in presenting a concrete example of critical discourse analysis by analyzing the text of political speeches by President Moon Jae-in based on Fairclough`s technique.

Hepatic Cirrhosis Occurring in a Young Woodchuck(Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus(WHV)

Kyu-shik Jeong,정원일,Jae-yong Chung,Mi-young An,Chae-yong Jung,Gyoung-jae Lee,Jong-soo Kang,Byeong-cheol Kang,Young-heun Jee,Bruce H Williams,Young-oh Kwon,Da-hee Jeong 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2

Cirrhosis Occurring in a Young Woodchuck (Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus (WHV)Da-hee Jeong, Won-il Jeong, Jae-yong Chung, Mi-young An, Chae-yong Jung, Gyoung-jae Lee1, Jong-soo Kang1, Byeong-cheol Kang2, Young-heun Jee3, Bruce H Williams4, Young-oh Kwon5 and Kyu-shik Jeong*College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea1Shinwon Scientific Co., LTD, Research Institute, Suwon, Korea2Clinical Research Institute, Seoul National University, Seoul 110-744, Korea3College of Veterinary Medicine, Jeju National University, Jeju 690-756, Korea

2003년 국내 중증급성호흡기증후군 진료 현황 및 문제점 분석

이진수,김은실,정문현,백제중,정선화,안주희,최영화,이선희,고철우,김성범,김민자,박승철,기현균,송재훈,최상호,김양수,이상오,조용균,박영훈,정숙인,김연숙,이흥범,손창희,장성희,정희진,김우주 대한감염학회 2004 감염과 화학요법 Vol.36 No.3

목적 : 2002년 말 중국에서 SARS가 발생한 이후 국내에서도 2003년 10월까지 총 3명의 추정환자, 17명의 의심환자가 보고되었다. 향후 추가적인 SARS의 유행이 우려되는 상황에서, 그간의 SARS 환자 진료에 있어서의 실질적인 준비사항, 진료 현황 등에 대한 조사를 통해 문제점을 파악하여, 향후 더 나은 대비가 될 수 있도록 개선점을 제시하고자 하였다. 재료 및 방법 : SARS로 의심되는 환자를 진료 경험이 있는 병원의료진을 대상으로 2003년 10월에 설문조사를 실시하였다. 설문에는 SARS 환자 진료 시의 실질적인 조치, 진료 현황, 병실, 응급실 및 외래에서의 격리 시설과 준비사항, 보건당국의 관리와 지원에 관한 사항을 포함하였다. 결과 : 대상이 되는 22개 병원 중 17개(17/22, 77.2%) 병원이 설문에 응하였다. SARS 환자를 위한 격리실은 응급실, 외래, 일반병실 및 중환자실에서 각각 9개(9/17, 52.9%), 5개(5/17, 29.4%), 15개(15/16, 93.7%), 4개(4/16, 25%) 병원에서 음압처리가 되어있지 않은 일인실 혹은 다인실이 사용되었고, 1개(1/16, 6.3%) 병원에서만 일반병실에서 음압격리실이 운영되었다. 입원환자의 진찰 시 개인보호구의 착용은 거의 모든 의료기관에서 이루어졌다. 보건당국에서 SARS지정병원의 시설 등을 사전에 확인한 곳은 1곳(1/12, 8.3%)이였고, 14개 병원(14/15, 93.3%)에서는 보건당국에 의뢰한 검사결과를 통하 받지 못하였다. 결론 : 의료기관에서 SARS 환자용 격리실뿐만 아니라 기존의 격리실 설비 등이 미흡하였으며, 특히 중환자실 및 외래의 준비가 더욱 부족하였다. 보건당국의 의료기관에 대한 종합적인 지원이 부족하였고, 병원과의 원활한 연계가 잘 이루어지지 않았다. SARS 만이 아닌 격리를 필요로 하는 질환의 적절한 진료를 위해 향후 병원 시설의 정비와 정부차원에서의 보다 구체적이고 실질적인 대책마련이 필요하다. Background : There was an worldwide outbreak of the Severe Acute Respiratory Syndrome (SARS) originated from China in late 2002. During that period three cases of suspected SARS and 17 cases of probable SARS were reported in Korea. With the concerns about the reemergence of SARS-coV transmission, it is important to be prepared for any possibility. So, this study is aimed to analysis the past measures in managing SARS and propose the amendatory plans to improve the preparedness. Materials & Methods : Questionnaires were collected among clinicians with any experience in managing the probable or suspected SARS cases in Oct. 2003. 17 out of 22 hospitals responded to the questionnaire. The contents in the questionnaire were practical activities, personal equipments, response plans, isolation facilities in emergency centers, outpatient clinics, general wards and intensive care units, and relationship with the public health department. Results : The dedicated isolation rooms in emergency centers, outpatient clinics, general wards, and intensive care units were prepared in 9 (9/17, 52.9%), 5 (5/17, 29.4%), 15 (15/16, 93.7%), and 4 (4/16, 25.0%) hospitals, respectively. Except for one hospital that newly made negative pressure room for SARS, single or multi-bed rooms without airborne infection control were used in all the other hospitals. The personal precaution principles were kept quite well in general wards. Before the designation of SARS hospital by the public health department prior evalution to see if the hospital was suitable for managing SARS was conducted in only 1 (1/12, 8.3%) hospital. The results of laboratory diagnosis were reported back in 1 (1/15, 6.6%) hospital. Conclusions : The isolation facilities which can control airborne infection were almost deficient not only for SARS but also for other respiratory transmissible diseases. For the infection control of transmissible diseases including SARS, more investment is needed on medical facilities and comprehensive support from the public health department required.

Development of a bivalent live vaccine against duck hepatitis A virus types 1 & 3 and vaccine program for breeder ducks in Korea

Jae?Hee Roh(노재희),Min Kang,Bai Wei,Se-Yeoun Cha,Jeong-Gon Cho,Hyung-Kwan Jang 한국가금학회 2017 한국가금학회 정기총회 및 학술발표회 Vol.2017 No.11

어린 오리에 치명적인 질병을 일으키는 오리바이러스성간염의 예방을 위해 혼합생백신 개발, 백신의 방어기전 연구 및 종오리백신 프로그램의 개발로 질병방어 및 제어를 목표로 연구를 진행하였다. 첫 번째, 국내에는 1형과 3형이 동시 유행하고 있으며, 최근에는 3형의 발생보고가 증가하는 추세이다. 특히 1형과 3형의 복합감염사례도 빈번히 발생하고 있다. 이런 상황에서 효율적인 질병관리를 위해 국내에 발생하는 오리간염 1형과 3형을 동시에 방어하는 혼합백신을 개발하고 그 효능을 확인하였으며, 운반 및 보관 용이성 향상을 위한 연구를 진행하였다. 두 번째, 오리감염 생백신의 3-5일 만에 조기면역을 획득하는 특성분석을 위해 세포성 및 체액성 면역반응을 평가하였다. Cytokine이 백신접종 그룹에서 증가하는 것을 확인하였고, 특히 IFN-α에서 강한 증가를 보였다. 또한 항체가 평가에서는 기존에 알려진 바와는 다르게 백신 후 3일째에 항체를 획득하였고, 10일째에는 최고수준의 항체가 수준을 나타냈다. 세 번째, 1주령이하의 어린 일령에 치명적인 질병의 특성상 모체이행항체에 의한 예방이 가장 효과적이라는 점에 착안하여 종오리백신 프로그램을 개발하고 농장에 적용하여 평가하였다. 종오리 농장 4개동 4천수의 종오리를 대상으로 백신을 실시하였으며, 모체의중화항체가(VN titer) 8 log2이상에서 후대병아리 14일령까지 100% 방어효능을 확인하였다. 모체이행항체의 전달률은 11%수준으로 나타났으며, 후대병아리의 항체가를 개체별 추적하여 계산한 결과 모체이행항체 반감기는 3-5일령임을 확인하였다. 본 연구에서는 오리에 치명적인 질병을 일으키는 오리바이러스성간염 예방을 위한 혼합생백신 개발에 관한 연구로 기존의 국내 상용화백신의 한계점을 극복하고, 국내에 유행하는 혈청형들을 단회백신으로 효과적으로 방어할 수 있는 혼합생백신을 개발하였으며, 백신의 특성상 조기면역에 대한 세포성 및 체액성 면역기전을 평가하였다. 또한 종오리백신 프로그램을 국내에 적용하여 모체이행항체에 의한 후대 병아리의 우수한 방어 효능을 확인하였다.

Prediction of Leptoglossus occidentalis distribution based on climate and geographic characteristics in Europe

Jae –Min Jung,Dae-hyeon Byeon,Sunghoon Jung,Wang-Hee Lee 한국응용곤충학회 2019 한국응용곤충학회 학술대회논문집 Vol.2019 No.10

만성 승모판 패쇄부전증 환자에서의 안지오텐신 전환효소 억제제의 장기 투여 효과

김대희,이명묵,이해영,조현재,박승정,서재빈,서정원,양한모,윤창환,조상호,이준희,김용진,김명아,손대원,오병희,박영배 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.2

전통누룩 진균류를 이용한 입국의 제조 및 입국곰팡이의 동정

김재호 ( Jae Ho Kim ),권영희 ( Young Hee Kwon ),이애란 ( Ae Ran Lee ),김혜련 ( Hye Ryun Kim ),안병학 ( Byung Hak Ahn ) 한국균학회 2012 韓國菌學會誌 Vol.40 No.4

다양한 향미를 가진 막걸리의 개발을 위해 전통누룩으로부터 분리한 곰팡이로 입국을 제조한 후 품질특성을 분석하여 입국의 규격에 적합하며 이취가 없고 관능이 우수한 9균주를 입국 제조용 우수균주로 최종 선발하였다. 선발된 균주는 Aspergillus oryzae(C1-5-2-2, C20-7-3, CN1.3.1-4, CN16.19.1-1, N152-1, N220-1), Mycocladus corymbiferus (N162-2), Rhizopus oryzae(N20), Lichtheimia corymbifera (N21)로 동정되었으며, 제조한 입국의 산도는 5.0~6.8, 당화력은 128~241sp이었다. Various koji were prepared by fungi isolated from traditional nuruk and their quality characteristics were investigated. Acidity and saccharification power of their koji were ranged in 5.0~6.8 and 128sp~241sp. Nine fungi which were showed good quality and sensory evaluation were identified by analysis of their nucleotide sequences with PCR-amplified 18S rDNA internal transcribed spacer-1(ITS-1) and ITS-4 genes. Among them, six strains were identified as Aspergillus oryzae and the other strains were identified as Mycocladus corymbiferus, Rhizopus oryzae, Lichtheimia corymbifera.

Note-Taking as a Self-Regulated Learning Strategy and Cognitive Style : Impact on Immediate and Delayed Learner's Academic Performance

Chung, Jae-Sam,Ki, Hye-Hee 이화여자대학교 사범대학 교과교육연구소 2004 East west education Vol.21 No.-

This research was to investigate the impact of cognitive style and self- regulated learning strategy such as note-taking methods on learners' students' academicper formance. Statistical analysis result showed that both cognitive style and note-taking methods did not have a significant effect on an immediate test.However, there is a significant main effect of cognitive style on a delayed test. Field-dependent students significantly outperformed field-independent students on the delayed test. Also, the main effect of note-taking methods on the delayed test was significant. Students who took notes in a matrix scored higher on the delayed test than did students who took notes in a free format.