• 한국정밀공학회지
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• 제28권7호
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• pp.769-776
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• 2011

In order to cope with the requirements of smaller patterns, larger surfaces and lower costs in the fields of displays, optics and energy, greater attentions is now being paid to the development of micro-pattern machining technology. Compared with flat molds, roll molds have the advantages of short delivery, ease of manufacturing larger surfaces, and continuous molding. This paper presents the state-of-the-art of the micro pattern machining technology on the roll molds and introduces some research results on the machining process technology. The copper and nickel-phosphorous-alloy plating process, machining process technology for uniform micro patterns. micro cutting simulation and the real time monitoring system for micro machining are summarized. The developed technologies have led the complete localization of the prism sheets and will be applied to the direct forming process with succeeding research & development.

• 방사성폐기물학회지
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• 제17권4호
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• pp.389-403
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• 2019

Large amounts of concrete waste are likely to arise from the decommissioning of a Kori-1 nuclear power plant. Several studies have been conducted on decommissioning concrete waste in recent decades, however, they have been limited to contaminated concrete issues or were small pilot-scale experiments. This study constructed two industrial-scale models of on-site concrete waste management for clean as well as contaminated concrete. To evaluate the performance of both the models, simulations were conducted using the Flexsim software. The concrete particle size distribution of Kori-1 and concrete processor properties based on widely used construction equipment were used as sources of input data for the simulations. It was observed that it may take over two years to complete the on-site concrete management processes owing to the performance of existing processors. In addition, it was demonstrated that it is essential to identify bottlenecks in the system and enhance the performance of the relevant processors to avoid delays of the decommissioning schedule. Our results suggest that this novel approach can contribute to developing schedules or expediting delayed activities in the Kori-1 decommissioning project.

• Journal of Biosystems Engineering
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• 제32권5호
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• pp.301-308
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• 2007

Sesame has usually been harvested manually in korea. The conventional sesame harvest procedures consists of cutting, binding, drying and pod shattering. The procedures of drying and shattering are repeated $2{\sim}3$ times. By manual works of this conventional shattering, it was found that some extent of pods were has always remained unopened. Therefore, this study was conducted to find a way to save the labor of sesame shattering by use of a drying device; a prototype of shattering machine was developed and tested the performance. The developed prototype consists of several parts: a continuous horizontal inlet using a chain conveyer, a shattering by a shocking agitator, a rotating cone for shattering of remaining closed pods, and a winnow. The shattering ratio measured by this prototype was 90.3%, 6.4% and 3.3% at the first, second and third shattering step, respectively. We found that in contrast to the conventional method which required at least 3 times operations for complete shattering, this shattering prototype with the condition of sufficient dried sesame pod offered more than 90% of shattering ratio in the first operation.

• 한국콘텐츠학회논문지
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• 제13권8호
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• pp.308-313
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• 2013

세포선별검사에서 ASCUS로 진단된 검체 중 F-UP이 진행되지 않은 검체 179건을 대상으로 HPV high risk factor, low risk factor를 확인하기 위해서 Hybrid Capture II Test를 하였다. 시험 결과 high risk factor 양성 및 low risk factor 양성은 전체 179 cases 중 26 cases로 나타났으며, 전체 검체 중 약 15%에 해당되었다. 또한 전체 15%의 양성검체 중 high risk factor 양성은 96%에 해당되는 것을 확인하였다. 결론적으로 효과적인 검진 체계를 갖춘 나라에서도 자궁경부암의 예방이 완전히 해결되지 않고 있는 문제점이 있는 여건을 고려해 볼 때 추적 관찰이 용이하지 않은 경우를 대비해 자궁경부암으로 진행될 수 있는 precancerous lesion의 원인 인자인 HPV 존재 유무를 세포선별검사와 HPV Hybrid Capture II Test를 동시에 시행하는 것이 효과적이라고 사료된다.

• 대한암한의학회지
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• 제14권1호
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• pp.37-44
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• 2009

Most of patients who have cancer still suffer from various forms of pain that significantly impact their quality of life. Cancer pain is a difficult problem for clinicians because analgesic drugs do not always procure complete relief. Acupuncture has been used as complementary treatment of cancer pain. We report a patient with colorectal cancer who suffer from cancer pain. The patient underwent chemotherapy, radiotherapy and opioid therapy. However, the patient insisted on being treated for his continuous pain with oriental medical treatment. The patient was treated with acupuncture(especially SAAM acupuncture) for 2 months, additional herbal medication was administered. After those treatments, the patient showed remarkable improvement in terms of intensity and severity of cancer pain. Further study will be needed in order to determine the long-term efficacy of acupuncture on cancer pain.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2001년도 추계학술발표회
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• pp.27-30
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• 2001

Flow and transport at fracture intersections, and their effects on network scale transport, are investigated in three-dimensional random fracture networks. Fracture intersection mixing rules complete mixing and streamline routing are defined in terms of fluxes normal to the intersection line between two fractures. By analyzing flow statistics and particle transfer probabilities distributed along fracture intersections, it is shown that for various network structures with power law size distributions of fractures, the choice of intersection mixing rule makes comparatively little difference in the overall simulated solute migration patterns. The occurrence and effects of local flows around an intersection (local flow cells) are emphasized. Transport simulations at fracture intersections indicate that local flow circulations can arise from variability within the hydraulic head distribution along intersections, and from the internal no flow condition along fracture boundaries. These local flow cells act as an effective mechanism to enhance the nondiffusive breakthrough tailing often observed in discrete fracture networks. It is shown that such non-Fickian (anomalous) solute transport can be accounted for by considering only advective transport, in the framework of a continuous time random walk model. To clarify the effect of forest environmental changes (forest type difference and clearcut) on water storage capacity in soil and stream flow, watershed had been investigated.

• 한국임상수의학회지
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• 제25권4호
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• pp.286-288
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• 2008

A 8-year-old intact female Siamese cat with chronic vomiting was referred to the Veterinary Teaching Hospital of Chungnam National University. The cat was diagnosed as lymphocytic-plasmacytic enteritis by complete blood count, blood chemistry, radiography, ultrasonography and histopathologic examination following small intestine biopsy. The cat show good prognosis to date after continuous hypoallergenic diet providing and low-dose prednisolone therapy.

• 대한한방소아과학회지
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• 제23권3호
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• pp.121-131
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• 2009

Objectives This study is to report a case that has an important meaning as a result of treating functional dyspepsia with oriental treatment. We investigated functional dyspepsia in 6 years child who had to continue abdominal distention for a month after gastroenteritis. The child has recovered from all dyspepsia symptoms after treating with oriental medicine. Methods The patient had dyspepsia symptoms all day, especially repeated abdominal distention. He sometimes had nausea, vomiting, diarrhea, abdominal pain. For those symptoms, we treated him with herbal medicine and acupuncture. The aim of treatment was to improve functional dyspepsia without western treatment. We measured patient's abdomen circumference for change of abdominal distention. Results The symptoms of functional dyspepsia were vanished and the patient maintains his condition with oriental medicine treatment without western treatment. After herb medicine treatment and acupuncture treatment the patient's dyspepsia symptoms (nausea, vomiting, diarrhea, abdominal pain, and abdominal distention) were vanished and maintained his condition for two months after complete the treatment. Conclusions This study showed that oriental medicine can elevate the functional dyspepsia children's quality of life with continuous health care and treatment. For more accurate studies, further studies would be needed with more cases.

• Journal of the Korean Wood Science and Technology
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• 제23권3호
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• pp.66-72
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• 1995

The rate of fixation of the components were evaluated in CCA-Type B and CCFZ-treated radiata pine sapwood by quantitative analysis of solution expressed from the treated wood. The leaching characteristics of radiata pine blocks treated with CCA-Type B and CCFZ were also evaluated by the AWPA standard leaching test. Both fixation and leaching charactersistics of CCA-Type B were compared with CCA-Type C treated wood samples. The rate of CCA-Type B fixation was a little faster than that of CCFZ. However, significant amounts of arsenic was unfixed in the CCA-Type B treated samples and consequently leached. These significant quantities of arsenic liberated from the CCA-Type B treated wood during service may pose some environmental concerns. Arsenic was no longer detectable from CCA-Type C treated samples when fixation was complete, even though the fixation of CCA-Type C was slower in some degree than CCA-Type B. In summary, it could be said that CCFZ was much safer preservative than CCA-Type B by the criterion based on the relative hazard assessed by absolute amount of unfixed element present in the treated wood. Also the decision that CCA preservative has to move from Type B to Type C should be made sooner or later for continuous use of CCA preservative in the future.

• 건축역사연구
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• 제13권3호
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• pp.37-50
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• 2004

Presentation is the way of revealing regionality that is hidden into the inner world. The expression of regionality has to be based on the origin and at the same time created newness as always suitable for the present through combination of 'familiarity' and 'unfamiliarity'. Regionality that has been maintained even under the application modern trends, spirits, technologies and materials should be now disclosed. Creating new forms that reflect regionality is possible only when a keen sense(emotion) always focusing on the essence of the earth works together with foresight(imaginative power) clarifying global pattern changes, under high tensions between both of them. Kim Su-Keun succeeded in reinterpreting traditional spaces, but failed in communicating patterns of life, ultimately revealing stiffness with no tension and no creativity. Kim Jung-Up could not draw out a whole meaning of relations among traditional fragments or relations between them and the present. He only borrowed such fragments from the view of formative art. For 'disclosed abstract', 'familiarity' and 'unfamiliarity' are repeated circularly and cope with pattern changes, continuously creating new forms and showing unity as a complete calmness(rest). In "YangDuk Catholic Church" by Kim Su-Keun provides a simultaneous reactivation of various images through continuous cross-weaving rather than being inclined to either the earth or the world. Based on the technique of 'disclosed abstract', "YangDuk Catholic Church" created a new form and space never seen before.