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퍼망간네이트-옥살산에 의한 아크릴아마이드 수용성중합에서의 첨가제 효과
이채주,이종광 慶尙大學校 1986 論文集 Vol.25 No.2
The polymerization of Acrylamide initiated by MnO4-H2C2O4 redox pair has been studied in aqueous media at 35±0.2℃ in nitrogen armosphere. The rate of polymerization is independent of activator concentration (2×10-3 to 4.5×10-3 mole/1) expect at very high (above 6.3×10-3 mole/1) concentration. The initial rate of polymerization has been found to be proportional to nearly 1.17 power of low catalyst concentration (2.3×10-4 to 6.25×10-4 mole/1) and nearly the first power of low monomer concentration (1.47×10-3 to 3.3×10-3 mole/1). The overall energy of activation has been found to be 10.99kcal/mole within the temperature range 30-50℃. The effects of various additives have been studied. Organic solvents and salts depress the initial rate but small amounts of manganous salts(MnSO4, MnCl2) increase the initial rate to a considerable extent. A complexing agent(NaF) and anionic and cationic surfactants show marked influence on the rate of polymerization. The intrinsic viscosity in aqueous acrylamide solution at 30±0.1℃ was 1.01 and the molecular weight of the polyacrylamide was 63,900.
가정방문 유아교육의 교사역할과 정체성이해: 초임교사를 중심으로
김주후 ( Ju Hu Kim ),곽승주 ( Seung Ju Kwak ),임채란 ( Che Ran Lim ) 대한아동복지학회 2012 아동복지연구 Vol.10 No.3
본 연구는 가정방문 유아교육의 초임교사를 대상으로 심층면담을 통해 교사로서의 역할과 그 역할을 수행하며 느끼는 정체성에 대해 알고자 하였다. 가정방문 유아교육은 일반적인 유아교육 기관과는 다른 조기교육으로 유아의 개별적 맞춤화 교육을 목적으로 교사의 역할이 중요시 된다. 즉, 가정방문 유아교사의 역할인식을 통해 형성된 안정된 정체감을 통해 효율적인 교사역할수행이 이루어진다고 볼 수 있다. 따라서 본 연구에서는 가정방문 유아교육 교사가 인식하고 있는 역할과 정체성에 대해 알아보고자 하였다. 연구를 위해 유아교육기관 교사 경력이 있으며, 가정방문 유아교육 경력 1년 미만 초임교사 5명을 선정하여 10주 동안 심층면담을 실시하였다. 가정방문 유아교육 초임교사는 기관에서의 교사역할과 비교를 통해 유사성과 차이성을 찾기에 용이할 것으로 기대하였다. 연구결과 첫째, 가정방문 유아교육 교사의 역할과 의미로는 개별유아를 위한 교수계획-실행-평가자, 유아의 일상생활교육 및 부모상담자, 교육전문가로서의 변화와 성장을 위한 학습자로 인식하였다. 둘째, 가정방문 유아교육 교사로 역할을 수행하며 느끼는 정체성은 다중역할을 해야 하는 만능교사로서의 나, 감정을 억제해야 하는 정서적 노동자로서의 나, 주도적인 교육 전문가로서의 나, 부모의 평가로부터 자유롭지 못한 나로 인식하고 있음을 알 수 있었다. 본 연구의 결과를 토대로 이후 가정방문 유아교육 교사가 정체성을 형성해 가는 과정과 의미에 대해 알아보는 것은 가정방문 유아교육 교사의 전문성 확립을 위한 중요한 연구가 될 것이다. The purpose of this study was to determine novice teachers` understanding of their role and identity during home-visits through in-depth interviews. Home-visit early childhood education is expected to have educational effects through individual customized education in general education institutions. Therefore, novice teachers in early childhood education who have less than one year of teaching experience were interviewed for ten weeks to determine the role and identity of home-visit early childhood teachers by making comparisons and observations about their teaching experience at previous institutions. First, our analysis shows that the role and meaning of home-visit early childhood is changing and developing into a teaching plan-practice-assessor for individual infants, teaching daily life for infants, mentoring to parents, and an education for home schooling. Second, in regards to the identity of the teacher of home-visit early childhood education, we feel these teachers view themselves as all-round multi-role teachers, emotional laborers who must suppress their feelings, leading educationalists, and teachers who are not free from the judgments of parents. In conclusion, studying the meaning of the role and identity of home-visit early childhood teachers is required to establish their professionalism as well as to conduct research about the expectations that parents have of home-visit early childhood teachers.
근내지방도가 한우육의 품질 및 항산화성 Dipeptide 특성에 미치는 영향
조철훈 ( Che Orun Jo ),( Dinesh D Jayasena ),임동균 ( Dong Gyun Lim ),이경행 ( Kyung Haeng Lee ),김종주 ( Jong Ju Kim ),차주수 ( Ju Su Cha ),남기창 ( Ki Chang Nam ) 한국식품영양학회 2013 韓國食品營養學會誌 Vol.26 No.1
근내지방도(IMF)가 한우육의 품질 및 기능성분에 미치는 영향을 조사하기 위하여, 250두의 한우를 근내지방 함량에 따라 Low(<14%, n=96), Medium(14∼17%, n=83), High(>17%; n=71) 세 그룹으로 분류하고, 7일간 숙성 후 등심육의 품질 및 기능성분을 분석하였다. 한우 등심육의 수분 함량은 IMF와 반비례하였으며, High IMF 그룹은 Low IMP 그룹에 비하여 낮은 드립 감량을 나타내었다. 기능성 didpeptide 함량은 IMF에 따라 유의적 차이가 없었으나, High IMF 그룹은 다른 그룹보다 낮은 inosine monophosphate, 높은 hypoxanthine, 낮은 histidine 함량은 나타내었다. 불포화지방산의 비율은 IMF에 따라 유의적 차이가 없었다. 저지방육의 건강지향적 가치를 고려할 때 지나친 IMF를 목표로 하는 육종 및 사양은 지양되어야 할 것으로 판단되었다.
Ju, Hee Young,Hong, Che Ry,Shin, Hee Young The Korean Pediatric Society 2014 Clinical and Experimental Pediatrics (CEP) Vol.57 No.10
Treatment outcomes of pediatric cancers have improved greatly with the development of improved treatment protocols, new drugs, and better supportive measures, resulting in overall survival rates greater than 70%. Survival rates are highest in acute lymphoblastic leukemia, reaching more than 90%, owing to risk-based treatment through multicenter clinical trials and protocols developed to prevent central nervous system relapse and testicular relapse in boys. New drugs including clofarabine and nelarabine are currently being evaluated in clinical trials, and other targeted agents are continuously being developed. Chimeric antigen receptor-modified T cells are now attracting interest for the treatment of recurrent or refractory disease. Stem cell transplantation is still the most effective treatment for pediatric acute myeloid leukemia (AML). However, in order to reduce treatment-related death after stem cell transplantation, there is need for improved treatments. New drugs and targeted agents are also needed for improved outcome of AML. Surgery and radiation therapy have been the mainstay for brain tumor treatment. However, chemotherapy is becoming more important for patients who are not eligible for radiotherapy owing to age. Stem cell transplant as a means of high dose chemotherapy and stem cell rescue is a new treatment modality and is often repeated for improved survival. Drugs such as temozolomide are new chemotherapeutic options. In order to achieve 100% cure in children with pediatric cancer, every possible treatment modality and effort should be considered.
Hemophagocytic lymphohistiocytosis diagnosed by brain biopsy
Ju, Hee Young,Hong, Che Ry,Kim, Sung Jin,Lee, Ji Won,Kim, Hyery,Kang, Hyoung Jin,Park, Kyung Duk,Shin, Hee Young,Chae, Jong-Hee,Phi, Ji Hoon,Cheon, Jung-Eun,Park, Sung-Hye,Ahn, Hyo Seop The Korean Pediatric Society 2015 Clinical and Experimental Pediatrics (CEP) Vol.58 No.9
Hemophagocytic lymphohistiocytosis (HLH) is characterized by fever, splenomegaly, jaundice, and pathologic findings of hemophagocytosis in bone marrow or other tissues such as the lymph nodes and liver. Pleocytosis, or the presence of elevated protein levels in cerebrospinal fluid, could be helpful in diagnosing HLH. However, the pathologic diagnosis of the brain is not included in the diagnostic criteria for this condition. In the present report, we describe the case of a patient diagnosed with HLH, in whom the brain pathology, but not the bone marrow pathology, showed hemophagocytosis. As the diagnosis of HLH is difficult in many cases, a high level of suspicion is required. Moreover, the pathologic diagnosis of organs other than the bone marrow, liver, and lymph nodes may be a useful alternative.