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        검색결과 569

        181.
        2017.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        A reliable and selective liquid chromatography–ultraviolet detection method for determination of antiprotozoals (selamectin, doramectin and fenbendazol) has been described. HPLC separation of active constituents was achieved on various C18 columns using methanol, acetonitrile, 0.1% phosphoric acid, acetic acid and distilled water as mobile phase, with UV detection at 243, 245 and 224 nm. The analytical procedure has been successfully identified. The method was validated for specificity, linearity, accuracy, repeatability and intermediated precision. All calibration curves showed good linearity (R2 of 0.9999) within the concentrations ranges (0~200, 0~200 and 50~400 μg/mL). The accuracy and repeatability showed 99%, 100%, 100% and below 0.4%, 0.5%, 0.6%, respectively. The precision tests conducted for 3 days in three different concentrations with standard also revealed below 3.5%, 2.4% and 2.7%. The method has also been applied successfully to monitor post-market 5 veterinary products of which active ingredient are selamectin, doramectin and fenbendazol. There were no non-compliant products.
        3,000원
        182.
        2017.06 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        As diethylnitrosamine (DEN) effect on cell proliferation, DNA damage and stem cell marker(s) expression have been largely unknown in mouse normal hepatocytes (AML-12 cells) cultured over a short-term period, this study was conducted to examine the cell proliferation, Ataxia telangiectasia mutated (ATM) and epithelial cell adhesion molecule (EpCAM) and Neighbor of Punc E 11 (Nope) expression in AML-12 cells treated with DEN for 24 and 48 h. Cells were treated with DEN (25-800 μg/mL) and cell phenotype was determined, and the MTT assay was used to quantify the proliferation of cells treated with DEN. Expression and distribution of ATM in AML-12 cells were determined by indirect immunofluorescence microscopy. And Western blot analysis of EpCAM and Nope was performed. Cell viability was significantly increased in response to all doses of DEN treatment compared to control at 24 h (p<0.05 or p<0.01). However, there was no significant increase at 48 h, even though it showed increased trend. Immunofluorescence staining of ATM showed that there was an increase of ATM expression at doses of 50, 100 and 200 μg/mL of DEN treatment, showing strong nuclear staining. Furthermore, Western blot analysis showed that DEN treatment showed increased trend of EpCAM and Nope expression. Taken together, DEN treatment increased cell proliferation in AML- 12 cells, and it was associated with increased ATM expression.
        3,000원
        183.
        2017.06 구독 인증기관·개인회원 무료
        This study aimed to investigate antioxidant activity of various extracts from fruiting bodies and mycelia of two Phellinus linteus strains and P. baumii. The Phellinus strains have cultivated on oak and mulberry logs. The fruiting bodies species were harvested from each Phellinus strain and used in this study. The tested items include: 2, 2’-azinobis[3-ethylbenzthiazoline]-6-sulfonic acid (ABTS), free radical scavenging assay and determination of total phenolics contents (TPC), ferric reducing antioxidant power assay (FRAP), and DPPH (1, 1-diphenyl-2- picrylhydrazyl) radical-scavenging activities. Different extractions with 60% Ethyl alcohol, 70% methyl alcohol and heat water were done on the mycellial and fruiting bodies samples of the mushroom species. The methyl alcohol extraction from fruiting body of P. linteus KACC93057P displayed the highest antioxidant activity on ABTS, FRAP, and DPPH assays. The ethyl acetate fraction was concentrated and subjected to an ODS column chromatography, followed by Sephadex LH-20 column chromatography. Finally six compounds 1-6 were detected by preparative reversed-phase HPLC.
        186.
        2017.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Two dimensional finite element method with quadrilateral basis functions was applied to the spherical high order filter on the spherical surface limited area domain. The basis function consists of four shape functions which are defined on separate four grid boxes sharing the same gridpoint. With the basis functions, the first order derivative was expressed as an algebraic equation associated with nine point stencil. As the theory depicts, the convergence rate of the error for the spherical Laplacian operator was found to be fourth order, while it was the second order for the spherical Laplacian operator. The accuracy of the new high order filter was shown to be almost the same as those of Fourier finite element high order filter. The two-dimension finite element high order filter was incorporated in the weather research and forecasting (WRF) model as a hyper viscosity. The effect of the high order filter was compared with the built-in viscosity scheme of the WRF model. It was revealed that the high order filter performed better than the built in viscosity scheme did in providing a sharper cutoff of small scale disturbances without affecting the large scale field. Simulation of the tropical cyclone track and intensity with the high order filter showed a forecast performance comparable to the built in viscosity scheme. However, the predicted amount and spatial distribution of the rainfall for the simulation with the high order filter was closer to the observed values than the case of built in viscosity scheme.
        4,000원
        189.
        2017.03 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        방사성폐기물 발생기관의 가용데이터를 기반으로 산출된 핵종재고량을 적용하여 예비안전성평가를 수행한 결과 처분안전성과 운영측면에서 많은 어려움이 예상됨을 확인하였다. 본 논문에서는 전체처분시설 예비안전성평가를 수행하였으며, 평가결과 성능목표치 초과핵종에 대해 방사능량이 큰 비중을 차지하는 단위포장물을 선별하고, 높은 표면선량률의 포장물을 처분대상에서 제외하는 방식으로 처분시설의 처분방사능량제한을 도입하였다. 처분방사능량제한은 안전기준 만족을 위한 처분시설별 인수기준과 처분기준 설정에 기초자료로 활용할 것이며, 경주 처분시설의 안전한 종합개발계획수립 및 처분시 설의 안전성 최적화를 위한 Safety Case 구축에 기여할 것으로 판단된다.
        5,200원
        190.
        2017.03 구독 인증기관 무료, 개인회원 유료
        The aim of this paper is to illuminate some aspects of the Jeju 4.3 Grand Tragedy (the Jeju Tragedy) education and informing process. We hope to not only with these aspects show some aspects of moral origin of the Jeju World Peace Island movement, but to share a culture of peace with world citizens through world civilization education cross the Pacific at a local, national and global level. In addition bring liberty to the cause of national freedom of the SAM IL movement of 1919 in Korea. it actualizes itself as a peace buffer zone locally, nationally and globally through the “Jeju World Peace Island Treaty JWPIT,” based on international agreement of the Six Talks Nations because “it is believed that that they (Jeju islanders) will follow the pattern of the SAM IL movement of 1919 with the participants imbued with the spirit of sacrifice to life and liberty to the cause of national freedom (G-2 Summary Report)” as a moral origin of Jeju World Peace Island. Globally, one New Haven teacher has been working on an elective course called “The Power of Culture in a Multicultural World” in which to use social studies tools to investigate the meaning and importance of culture. Jeju offers an excellent opportunity to explore a culture that few New Haven students are familiar with. It will be for students to use the Jeju idea of turning troubles into opportunities, as a vehicle for addressing local issues” (“New Haven Learn- Teach Jeju 4.3,” New Haven Independent: March 29, 2017). Another New Haven teacher in his history class explains the different components of genocide. “Although the Jeju 4.3 events are not deemed genocide by the international community, using this as a lens to understand broader concepts seemed really exciting.” Jeju offers educators an opportunity to teach the curriculum but instead of gratuitous death and violence, there is a legacy of hope, healing, reconciliation and remembrance.” (Ibid, New Haven Independent: March 29, 2017). Locally and partially on the global level, “The Resurgence of Jeju 4.3 Social Healing Advocacy of “PETITION FOR A JOINT SOUTH KOREA AND UNITED STATES JEJU 4.3 INCIDENT TASK FORCE TO FURTHER IMPLEMENT RECOMMENDATIONS AND FOSTER COMPREHENSIVE AND ENDURING SOCIAL HEALING THROUGH JUSTICE” (March 27, 2014). The petition supports a combined solution to social healing for numerous survivors of Jeju 4.3. Based on interviews with members of the Jeju 4.3 Victim Family Association, 20% of them are now elderly and require expensive medical care and assistance. Many continue to suffer from psychological trauma (PTSD). It serves as a beacon of international peace in the same vein as May 24, 2015’s event, “Women Cross DMZ Demilitarized Zone.” Jeju itself aims to serve as a “Peace Buffer Zone” between the two Koreas among 6 Nations Talks within the framework of the Jeju World Peace Island Treaty, similar to Costa Rica. Never before has the need for a Peace Island in the region been so vital, with China stretching its reach across the ocean, and President Trump flexing his muscles against North Korea, the time has come for serious peacemaking, that is, prevention of conflict. It’s a real time to think about actualization of Jeju World Peace Island Treaty for Peace between two Koreas.
        4,000원
        191.
        2016.12 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        경주 방사성폐기물 처분시설은 향후 80만 포장물을 처분할 계획이며 다양한 처분방식 및 관리형태를 가진 복합계가 될 것 이다. 본 논문에서는 전체부지 처분용량(80만 포장물) 처분시설의 단계별 개발에 따른 영향을 평가하기 위하여 처분시설 종 합개발계획(안)에 따른 예비안전성평가를 수행하였다. 각 시나리오에 대한 안전성평가결과 처분시설의 성능목표치를 만족 하였다. 다만, 전체처분시설의 안전성 평가결과에 중준위 방사성폐기물로 인하여 1단계 동굴 처분시설이 가장 크게 영향을 미치므로 처분시설의 안전성 향상을 위하여 처분방사능량제한 설정 등 관리방안이 필요하다. Safety Case 단계별 구축을 통 하여 중·저준위 방사성폐기물 처분시설 종합개발 과정에서 인지된 불확실성을 저감하여 안전성을 증진 시킬 수 있을 것으 로 판단된다.
        6,400원
        192.
        2016.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In recent years, the tourism experience of tourists has been impacted seriously with the increase in the number of tourists. Psychological Carrying Capacity (PCC) as an important part of Tourism Carrying Capacity (TCC), is an important criterion for measuring the quality of tourism experience. It is also an important and necessary means of tourism management. Daerungwon, as a symbol of the Gyeongju city, has not been studied on TCC. In this study, the number and the satisfaction degree of tourists in Daerungwon were investigated hourly. Then the mathematical relationship between the two variables was established with regression analysis method. Based on these, the study researched the change rules of the PCC in Daerungwon. The results showed that: (1) The satisfaction degree curve presented inverted “U” shape rather than monotonically decreasing shape with the increase of the number of tourists in Daerungwon. (2) When the instantaneous number of tourists is 193, the satisfaction degree of tourists is the highest. When the instantaneous number is 382, the descent speed of satisfaction degree is the fastest. The best PCC in Daerungwon is 1,198 persons per day. And when the number of tourists reached 2,372, the satisfaction degree will drop quickly. Finally the study verified the influencing factors of PCC from the view of tourists and put forward suggestions on management based on PCC research results. The achieved results can provide the references to the tourism management of Daerungwon.
        4,000원
        193.
        2016.12 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        This report describes the different responses to dapsone treatment in two cases of sterile nodular panniculitis (SNP). Two dogs were presented with ulcerative skin lesions, painful and erythematous papules, and nodules. History and physical examination revealed systemic signs such as pyrexia, lethargy, depression, and anorexia, in addition to ulcerated and ruptured nodules on the skin. The dermatological diagnostics included clear taping, trichogram, skin scraping, impression smears, fungal and bacterial cultures, and histopathology and special stainings of multiple punch biopsies obtained from the skin lesions. Based on the clinical and histopathologic findings, the absence of microbiological infection, and the positive response to immunosuppressive therapy, both the dogs were diagnosed with SNP. Although both dogs had been treated with various immunosuppressive drugs including prednisolone, cyclosporine, azathioprine, and triamcinolone, therapy was switched to dapsone due to recurrent dermatological signs and presumed steroidinduced hepatotoxicity. The clinical responses to dapsone were opposite in the two cases. In the first case, combination therapy with prednisolone and cyclosporine was effective in attenuating ulcerative lesions, while dapsone alone did not control the clinical signs. In contrast, in the second case, the therapeutic response to the common immunomodulatory drugs such as prednisolone, triamcinolone, and azathioprine was inadequate. Interestingly, dapsone alone was effective in controlling the clinical signs without causing undue side effects. Although the usefulness of dapsone for the treatment of canine SNP is unknown, it may be considered in mild to moderate cases of SNP when the use of steroids is not recommended due to its low efficacy or side effects.
        4,000원