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      • 鐵 陽極 溶出反應에 의한 燐成分 除去

        강민수,김형석,박승조 동아대학교 환경문제연구소 1995 硏究報告 Vol.18 No.1

        This study was on the removal of phosphorus compounds in domestic and synthetic wastewater using iron-anode electrolytic reactor. The experiments were performed at different current, reaction time and flow rate. The results are as follows ; 1. For the synthetic wastewater with the flow rate of 1.5 ℓ/min and 0.75 ℓ /min, the removal efficiencies were 97% and 98%, respectively. The order conditions of this continuous experiments are current density 2.54 A/dm² and reaction time 20 minutes. 2. The optimal conditions of the batch experiment for synthetic wastewater were current density 0.95 A/dm² and reaction time 3.0 minutes with no addition of electrolyte. With electrolyte, the optimal conditions were current density 2.54 A/dm² and reaction time 1.0 minutes. For the both experiments, the removal efficiencies were far over 97%.

      • KCI등재

        한국인 직무 스트레스 측정도구의 개발 및 표준화

        장세진,고상백,강동묵,김성아,강명근,이철갑,정진주,조정진,손미아,채창호,김정원,김정일,김형수,노상철,박재범,우종민,김수영,김정연,하미나,박정선,이경용,김형렬,공정옥,김인아,김정수,박준호,현숙정,손동국 大韓産業醫學會 2005 대한직업환경의학회지 Vol.17 No.4

        Background and Purposes: Over the past three decades, numerous studies performed in Korea have reported that job stress is a determinant risk factor for chronic diseases and work disability. Every society has its own culture and occupational climate particular to their organizations, and hence experiences different occupational stress. An occupational stress measurement tool therefore needs to be developed to estimate it objectively. The purpose of this study is to develop and standardize the Korean Occupational Stress Scale (KOSS) which is considered to be unique and specific occupational stressors in Korean employees. Subjects and Methods: Data were obtained from the National Study for Development and Standardization of Occupational Stress (NSDSOS Project: 2002-2004). A total of 12,631 employees from a nationwide sample proportional to the Korean Standard Industrial Classification and the Korean Standard Occupational Classification were administered. The KOSS was developed for 2 years (2002-2004). In the first year, we collected 255 items from the most popular job stress measurement tools such as JCQ, ERI, NIOSH and OSI, and 44 items derived from the a qualitative study (depth interview). Forty-three items of KOSS, in the second year, were retained for use in the final version of the KOSS by using Delphi and factor analysis. Items were scored using conventional 1-2-3-4 Likert scores for the response categories. Results: We developed eight subscales by using factor analysis and validation process: physical environment (3 items), job demand (8 items), insufficient job control (5 items), interpersonal conflict (4 items), job insecurity (6 items), organizational system (7 items), lack of reward (6 items), and occupational climate (4 items). Together they explained 50.0% of total variance. Internal consistency alpha scores were ranged from 0.51 to 0.82. Twenty-four items of the short form of the KOSS (KOSS-SF) were also developed to estimate job stress in the work setting. Because the levels of the subscales of occupational stress were gender dependent, gender-specific standard norms for both the 43-item full version and the 24-item short form using a quartile for the subscales of KOSS were presented. Conclusion: The results of this study suggest that KOSS might be an appropriate measurement scale to estimate occupational stress of Korean employees. Further and more detailed study needs to be conducted to improve the validity of this scale.

      • [논문]지진격리교량의 내진설계를 위한 표준 인공지진파 생성

        김남식,김재민,이계희,강형택 釜山大學校生産技術硏究所 2007 生産技術硏究所論文集 Vol.66 No.-

        본 연구에서는 지진격리교량의 내진설계에 사용할 수 있는 인공지진파의 생성기법을 제시하였다. 또한,생성한 지진파가 적절한지 조사하였으며,지진격리교량의 내진설계기준(안)을 토대로 인공지진파 작성을 수행하였다. 설계지반응답스펙트럼을 만족시키기 위하여 22개의 가속도시간이력을 작성하였다. 얻어진 인공지진파는 (1) 통제진동수에서 인공지진파의 평균응답스펙트럼 평가, (2) EPGA(유효최대지반가속도) 평가,(3) 인공지반가속도 사이의 상관계수 평가, 동으로 적합성을 평가하였다. 최종적으로 생성된 인공지진파를 이용하여 4쌍의 지진파를 사용한 최대응답과 7쌍의 지진파를 사용한 평균 응답을 계산하여 제안된 인공지진파 시간이력의 타당성을 제시하였다.

      • KCI등재

        갓(Brassica juncea)을 첨가한 간장 피조개(Scapharca broughtonii)장의 개발 및 관능특성

        강상인 ( Sang In Kang ),김예진 ( Ye Jin Kim ),이지운 ( Ji Un Lee ),박시형 ( Si Hyeong Park ),최관수 ( Kwan Su Choi ),송호수 ( Ho-su Song ),최정미 ( Jung-mi Choi ),허민수 ( Min Soo Heu ),이정석 ( Jung Suck Lee ) 한국수산과학회 2021 한국수산과학회지 Vol.54 No.6

        The home meal replacement (HMR) market has attracted significant attention due to COVID-19 pandemic and products that utilize the combination of different processed ingredients are now being developed. In this study, Broughton’s ribbed ark Scapharca broughtonii was soaked in seasoned soy sauce with the incorporation of mustard leaf Brassica juncea (M-BRA), which is known to have a unique texture as well as excellent functional properties such as antioxidation, to develop a regional specialty product. The optimal conditions for manufacturing M-BRA from the seasoned soy sauce (the sauce to be added [X<sub>1</sub>] and the soaking time [X<sub>2</sub>]), were examined using response surface methodology (RSM) to analyze the significance of the salinity (Y<sub>1</sub>), amino-N content (Y<sub>2</sub>), and overall acceptance (Y<sub>3</sub>). The coefficient of determination (R<sup>2</sup>) between X<sub>1</sub>-X<sub>2</sub> and Y<sub>1</sub>-Y<sub>3</sub> were close to 1, thereby confirming the suitability of the RSM model. The optimal conditions were seasoned soy sauce addition of 140% and soaking time of 156 min. The M-BRA manufactured under these conditions exhibited superior overall acceptance compared to seasoned commercial soy sauce, which was used as a control. We expect that the market for M-BRA manufactured by combining marine and agricultural materials will expand owing to superior overall acceptance compared with commercial products.

      • 관해유도 화학요법을 받는 급성 백혈병 환자에서 발생한 감염증에서 Imipenem 단독요법과 Ceftizoxime + Amikacin 병용요법의 효과 및 안전성에 관한 전향적 비교 연구

        신형식,김성민,이기형,최희정,김남중,오명돈,박선량,김병국,최강원 대한화학요법학회 1996 대한화학요법학회지 Vol.14 No.2

        A total of 40 febrile granulocytopenic patients with acute leukemia were randomized to receive imipenem-cilastatin or ceftizoxime plus amikacin as initial empirical therapy to compare the efficacy and safety of imipenem monotherapy with that of ceftizoxime/amikacin combination therapy. 21 patients were randomized to the imipenem monotherapy, while 19 patients to the ceftizoxime/amikacin combination therapy. On 72 hour assessment success rates accordings to NCI criteria were 100% in both groups, success rates according to IHS (Immunocompremised Host Society) criteria were 55.0% in imipenem group and 66.7% in ceftizoxime/amikacin group. On overall assessment success rates according to NCI criteria were 90.0% in imipenem group and 94.7% in combination group, success rates according to IHS criteria were 50% in both groups. There was no statistical difference in success rate between two groups. Hepatotoxicity was the most common side effect in both groups(imipenem 15.0% vs. ceftizoxime/amikacin 15.8%). There was no CNS tixicity in both groups. Nausea and vomiting occurred in 9.5% of imipenem recipients, and 1 patients was unable to complete therapy due to intolerance. In summary, imipemem monotherapy was effective and safe empirical antibiotic therapy as compared with ceftizoxime/amikacin combination therapy.

      • KCI등재

        정신분열병 환자의 말초 임파구에서 도파민 수용체 mRNA의 변화

        곽용태,최철희,김옥준,주연호,김형섭,강성숙,구민성,선우일남 大韓神經精神醫學會 1999 신경정신의학 Vol.38 No.5

        연구목적 : 정신분열병은 주로 청소년기에 발병하는 정신과에서 가장 흔한 질환 중의 하나이다. 이 질환의 원인이나 병인은 아직 불확실하지만 뇌 도파민계의 기능장애가 중요한 기전으로 생각되고 있으나 부검없이 뇌 도파민계를 직접 관찰할수 없으므로 많은 혼란이 있어왔다. 이를 극복하기 위하여 최근에 발견된 말초 임파구의 도파민 수용체를 이용하여 정신분열병에 있어서 말초 임파구 도파민 수용체가 뇌 도파민계의 기능을 반영하는 말초표식인자일 가능성이 있는지를 규명한다. 방 법 : 3년 이상 항정신병 약물을 복용중인 정신분열병 환자(약물투약군) 44명, 최근 3개월 이상 항정신병 약물을 복용하지 않은 환자(약물비투약군) 43명, 정상대조군 31명을 대상으로 말초 임파구의 D3, D5 도파민 수용체를 정량적 역전사 중합효소 연쇄반응(quantitative reverse transcritpase polymerase chain reaction)을 이용하여서 정량 비교하였고, 또한 항정신병 약물을 복용하지 않은 환자들에 있어서 약물 투여 후 도파민 수용체의 변화 및 임상양상의 변화를 관찰하였다. 결 과 : 1) 말초혈액 임파구의 D3R/βA는 약물비투약군에서 정상대조군이나 약물투약군에 비하여 통계적으로 유의하게 있게 증가되어 있었다. D5R/βA의 경우 약물비투약군이 약물투약군에서만 비하여 유의하게 증가되었다. 그러나 약물투약군과 정상대조군 간에는 도파민 수용체 mRNA(D3R/βA, D5R/βA)양에 있어서 차이가 없었다. 2) 항정신병 약물을 새로 투여하는 환자에서 항정신병 약물을 투여 후 임파구 도파민 수용체의 변화를 추적 관찰한 결과 증가하는 경향을 보였다. 3) 약물비투약군을 정상 대조군과 비교하여 D3R/βA mRNA가 정상범위에 속하는 군과 높은 군으로 나누어서 임상척도와 비교 분석한 결과 임파구 도파민 수용체가 증가한 군에서 다음과 같은 임상특징을 관찰할 수 있었다. (1) 정신병리증상이(BPRS) 현저하였다. (2) 약물치료에 대해 양성 정신병리증상(pBPRS)의 호전도가 낮았다. (3) 약물치료시 추체외로 부작용이 심하였다. 결 론 : 이상의 연구결과로 말초 임파구에서 발현되는 도파민 수용체는 정신분열병의 소군 분류 및 예후 예측에 있어서 임상적 의의가 있는 것을 알 수 있었다. 따라서 말초임파구에서 발현되는 도파민 수용체는 비록 이에 상응하는 뇌의 해부학적 위치는 알 수 없지만 중추신경계의 도파민 수용체의 기능을 반영할 가능성이 높다고 생각되었다. Objectives : Schizophrenia, commonly developed in adolescence and young adulthood, is one of the most common mental diseases in psychiatry. The etiology or pathogenesis of this disease is uncertain yet, but the dysfunction of dopaminergic system in the brain has been proposed. However, there is no direct evidence of dysfunction of brain dopaminergic systems in schizophrenic patients because the direct assessment of brain dopaminergic systems is almost impossible at present. To overcome this problem, recently founded dopamine receptors and their mRNAs in peripheral lymphocytes was used. The purpose of this study was to define whether the dopamine receptors of peripheral lymphocytes can be the peripheral markers of schizophrenia or not. Methods : The total numbers of subjects are 87 schizophrenic patients. Among them 44 patients were schizophrenics who had been taking antipsychotic drugs for more than 3 years(medicated patients), 43 schizophrenics who recently are not taken antipsychotic drugs for more than 3 months(drug-free patients). For controls age and sex matched 31 healthy persons were enrolled. Sequential reverse transcription and quantitative polymerase chain reaction of the mRNA were used to investigate the expression of dopamine receptors in peripheral lymphocytes. The gene expression of dopamine receptors were compared in each groups and after starting antipsychotic medicines in drug-free patients, the clinical scales and the dopamine receptors of peripheral lymphocytes were sequentially studied before, 2 weeks after and 8 weeks after medication. Results : 1) In drug-free schizophrenics, D3 dopamine receptor mRNA expression of peripheral lymphocytes was significantly increased comparing with that of controls and drug-medicated schizophrenics and D5 dopamine receptor mRNA expression was increased comparing with only that of drug-medicated schizophrenics. There was no difference between controls and drug-medicated schizophrenics. 2) After antipsychotic medication, dopamine receptors of lymphocytes were increased tendency. 3) Drug-free patients were divided into two groups according to dopamine receptor expression in controls to evaluate the significance of increased dopamine receptor expression. The group of patients with increaseddopamine receptor expressio had following clinical characteristics. (1) More severe psychiatric symptoms (2) Poor pharmacological response of pBPRS on medicines (3) Severe extrapyramidal side effects after pharmacological treatment Conculsion : These results revealed that the molecular biologically determined dopamine receptors of peripheral lymphocytes were reactive, and increased expression of dopamine receptor in peripheral lymphocyte had clinical significance for subgrouping and prognostication. These findings suggested that dopamine receptors of peripheral lymphocyte may represent dopamine receptors of the brain, even the location cannot be determined.

      • KCI등재

        Born on the Fourth of July: From Victim to Savior

        Kang, Hyeong-min 한국현대영미드라마학회 2020 현대영미드라마 Vol.33 No.1

        Based upon Ron Kovic’s autobiography, Olive Stone’s Born on the Fourth of July dramatizes how the protagonist, Ron Kovic, has progressed from a victim of the nation to a savior of the nation. At first, Kovic believes in the values of American society and American Myth. More specifically, Kovic truly follows the values represented by American institutions: family, community, military and history. However, through his experiences in the Vietnam War, he has disillusioned with the existing values since he comes to believe that those values are nothing but lies. Through its three-part dramatic structure, part one of Born on the Fourth of July shows the process of how the traditional American ideology has brainwashed and sent the innocent protagonist to the Vietnam War and sacrificed him. Paralyzed from the chest down because of his wound in Vietnam, the protagonist returns home and begins to experience the home front in part two of the film. Although the protagonist has become disillusioned with the American institutions and their values on the one hand in his war on the home front, he has also come to terms with his own mistakes and damaged self on the other. Thus, in part three of the film, the protagonist emerges as the national savior equipped with his new political and moral awakening as well as his anti-war activism.

      • KCI등재

        Violence Enacted to Sever from the Colonial Past

        Kang, Hyeong-min(강형민) 한국현대영미드라마학회 2018 현대영미드라마 Vol.31 No.1

        The revolutionary philosopher, Frantz Fanon, has appealed to the African Americans since the 1960s with his emphasis on racial issues during their pursuit of liberation from colonization and Third World conditions. Most notably, Fanon’s advocacy of violence in the revolutionary process of decolonization has inspired black radicals and bolstered the inevitable use of violence in their fight against white America. Lorraine Hansberry was aware of the limits of non-violent resistance in the Civil Rights Movement led by the black middle class: her play, Les Blancs, supports the use of violence by connecting the historical realities in Africa of the late 1950s and early 1960s with those of her contemporary African Americans. Les Blancs successfully explores Fanonian themes of racial conflicts, exploitation of the oppressed, and pro-violence liberation movements that occur as a result of ensuing interpersonal (i.e., intraracial and interracial) and intrapersonal conflict. These turbulent confrontations and conflicts, whether external or internal, manifest in the play’s protagonist, Tshembe Matoseh, and his tribesmen in their struggle to liberate their people from the oppressive whites. Hansberry juxtaposes the position of her characters to demarcate the binaries of “white” versus “black” and “good” versus “evil.” Although the protagonist eventually uses violence to sever all ties with his colonial past in his tribe’s uprising against the colonialists, his character is presented in the inceptive stages of true revolutionary violence.

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