• 대한토목학회논문집
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• 제34권1호
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• pp.155-165
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• 2014

본 연구에서는 낙동강 유역을 대상으로 물리, 화학, 생물학적의 복합적인 평가요소를 이용하여 수생태 관련 기후변화 취약구간을 선정하였다. 먼저 SWAT 모형을 이용하여 A1B 기후변화 시나리오에 따라 각 소유역별로 유출량, 유사량, 갈수량 변화를 모의하였다. 또한 환경부의 수질 측정망과 수생태 건강성 측정 지점이 서로 일치하는 48개 지점을 대상으로, BOD 및 TP 등의 수질 데이터와 IBI, KSI의 수생물 데이터를 평가에 반영하였다. 한편, 미래 기온 상승에 따른 낙동강 유역 하천에서의 수온 상승 폭을 예측하였고, 이로 인한 수생물 서식처 영향을 분석하여 평가에 반영하였다. 각 평가요소를 종합하여 가장 취약한 상위 10개 지점을 제시하였다. 본 연구는 하천 생태복원을 위한 취약구간 평가 및 종합적인 평가 결과를 토대로 각 하천 특성에 맞는 하천 관리 계획을 수립하는데 있어 효과적일 것으로 사료된다.

• 한국의료질향상학회지
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• 제10권2호
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• pp.204-215
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• 2003

Background : ICD-10 Classification, which is used domestically as well as internationally, has limited use in the clinical practice since it is developed for at disease statistics and epidemiology. Therefore, the purposes of this study were to improve the quality of diagnosis by constructing a new disease classification based on the diagnoses doctors currently make in the clinical setting and connecting this classification with OCS and EMR, and to meet the demands of doctors for high quality medical study data in medical research. Methods : The specialists in each ophthalmic subfield collected clinical diagnoses and abbreviations based on the ophthalmology textbooks and confirmed the classifications. Total number of clinical diagnoses collected was totaled 672, for which ideal diagnoses had been selected and a new model of disease classification model in connection with ICD-10 was constructed. The constructed classification of clinical diagnoses consisted of six steps: the first step was the classification by ophthalmic subspecialty field; the second to fifth steps were the detailed classification by each specialty field; the sixth step was the classification by site. Results : After introducing the new disease classification, research on the use and a pre-post comparison was conducted. The result from the research on the use of the clinical diagnoses in inpatient and outpatient care has shown a gradually increasing tendency. From the pre-post comparison of EMR discharge summary diagnoses, the result demonstrated that the diagnosis was stated correctly and in detail. Since the diagnosis was stated correctly, code classification became correct as well, which makes it possible to construct high quality medical DB. Conclusion : This construction of clinical diagnoses provides the medical team with high quality medical information. It is also expected to increase the accuracy and efficiency of service in the department of medical record and department of insurance investigation. In the future, if hospitals wish to construct a classification of clinical diagnosis and a standard proposal of clinical diagnosis is presented by a medical society, the standardization of diagnosis seems to be possible.

• Journal of Welding and Joining
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• 제32권3호
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• pp.27-33
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• 2014

This paper presents a brief summary on a relatively new plasma aided electrolytic surface treatment process for light metals. A brief discussion regarding the advantages, principle, process parameters and applications of this process is discussed. The process owes its origin to Sluginov who discovered an arc discharge phenomenon in electrolysis in 1880. A similar process was studied and developed by Markov and coworkers in 1970s who successfully deposited an oxide film on aluminium. Several investigation thereafter lead to the establishment of suitable process parameters for deposition of a crystalline oxide film of more than $100{\mu}m$ thickness on the surface of light metals such as aluminium, titanium and magnesium. This process nowadays goes by several names such as plasma electrolytic oxidation (PEO), micro-arc oxidation (MOA), anodic spark deposition (ASD) etc. Several startups and surface treatment companies have taken up the process and deployed it successfully in a range of products, from military grade rifles to common off road sprockets. However, there are certain limitations to this technology such as the formation of an outer porous oxide layer, especially in case of magnesium which displays a Piling Bedworth ratio of less than one and thus an inherent non protective oxide. This can be treated further but adds to the cost of the process. Overall, it can be said the PEO process offers a better solution than the conventional coating processes. It offers advantages considering the fact that he electrolyte used in PEO process is environmental friendly and the temperature control is not as strict as in case of other surface treatment processes.

• 한국의료질향상학회지
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• 제22권1호
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• pp.29-37
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• 2016

Readmission which reflects capacity to manage patients and general level of medical services has been known for one of the causes of medical expenditure due to inefficient service. Compared to disease-specific readmission, hospital wide readmission (HWR) is relatively easy to understand, and has merit to get over limitation of collateral medical services assessment; therefore, a growing interest in development and usage of readmission indicator as quality of care indicator focusing on all-disease is detected. In this study, we investigate current state of risk standardized readmission rate indicator used in the United States, the United Kingdom, and Canada, and examine the considerations when using readmission rate as quality indicator in Korea. Differences in risk-adjustment methods were showed among countries. The United States do not control race not to hide socio-demographic factors on readmission. Canada shows differentiation compared to other countries about reflecting community factors. All three-countries utilize readmission rate as monitoring quality of care rather than incentives or penalty due to the fact that readmission rate could not represent the whole quality of hospital and has a limitation at controlling socio-economic factors. Therefore, for usage readmission rate as quality indicator in Korea, preparing readmission classification standard for Korean medical environment and additional methods for acquiring information by using discharge summary is need. Moreover, continued discussion with clinical specialists is needed for obtain clinical reliability and validity.

• 대한한방내과학회지
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• 제41권6호
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• pp.1289-1299
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• 2020

Background: Hemorrhoid surgery is a frequently performed surgery in Korea, second only to cataract surgery. However, it has serious complications, including bleeding, infection, anal stenosis, and urinary retention, so active conservative therapies are in need at an early stage. Case summary: Thirteen patients with anal disease complained of main symptoms of pain, bleeding, and prolapse, with additional complaints of itching and mucus discharge. An herbal medicine mixture of Eulja-tang and Hwangryeonhaedok-tang was administered twice daily, and dry cupping therapy, acupuncture, and hot pack placements were administered on pelvic and sacral regions once weekly for four weeks. The symptoms were evaluated before and each week after the treatments. The treatments had statistically significant therapeutic effects. Conclusion: Korean medicine treatment-effectively alleviating the symptoms of anal disease, such as pain, bleeding, and prolapse-may represent an alternative therapy for conservative treatments in the early stages of anal disease.

• 한국물환경학회지
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• 제40권1호
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• pp.36-46
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• 2024

Microplastics in water resources have been recognized as a serious problem. The discharge of microplastics from wastewater treatment plants is considered a major contributor to environmental pollution in water resources. However, a reliable analytical method for quantifying microplastics in wastewater treatment plants has not yet been established. This study proposes a reliable, quick, and easy analytical method for quantifying microplastics. For the removal of organic particles, preprocessing steps were applied including oxidation, sonication, washing, and sieving. Nile Red staining was used to visualize microplastics, and quantitative analysis was conducted using fluorescent imaging. The stained microplastics were ultimately quantified through image analysis software. Among the preprocessing steps, sonication and washing stages were particularly effective in efficiently removing interfering substances from wastewater, enhancing the accuracy of the microplastic analysis. Additionally, various solvents (methanol, acetone, and N-hexane) for the Nile Red staining solution were tested. When N-hexane was applied as the solvent, the quantity of stained microplastics was lower compared to methanol and acetone. This suggests that N-hexane has a greater potential of reducing false staining and counting of non-plastic particles. In summary, this research demonstrates a robust method for quantifying microplastics in wastewater treatment plants by employing effective preprocessing steps and optimizing the staining process with Nile Red and N-hexane.

• Journal of Preventive Medicine and Public Health
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• 제21권1호
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• pp.31-46
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• 1988

In order to designate a present status necessary for establishment of preventive measures and guidelines of health education against hepatitis B in the course of secondary school education, knowledge and practice toward hepatitis B virus infection was surveyed by a questionnare method on total of 4,855 college entrants in the academic year of 1987 and analyzed the data collected using IBM PC(Trigem 88-II) with SAS package program. About two per cent of college entrants had past history of HBV infections not showing any difference between both sexes and geographical regions. About one third(33.7%) of total students had tested hepatitis B surface antigen(HBsAg), only 4% had tested hepatitis B surface antibody(HBsAb) and vaccination rate amounted to 24.6%, one fourth of total subjects. Both serological tests and vaccination were most commonly performed during adolescence, showing higher rates in female students than in male students. The rates also seemed to be higher in those from urban cities than those from rural cities. Students who had acquired correct knowledge that hepatitis B was infected by virus were amounted to 78.5% of college entrants, and remaining 21.5% had misunderstood that rickettsia, bacteria, fungi or parasites were causal agents. Female students were better aware of the causal agents than male students but there was no difference between places of growth. As for mode of transmission of HBV, 51.5% of male students and 47.7% of female students had correct knowledge. A very few student had known that fact that HBV was transmitted by body fluids such as tear(6.9%), nasal discharge(10.1%) and semen or vaginal secretion(19.2%) and majority(75%) of students had misunderstood that hepatitis B virus would be transmitted per os through food ingestion. Approximately one half(48.9%) of college entrants had knew correctly whom to be vaccinated. Approximately one half of the students knew that hepatr;ma(57.8%) and liver cirrhosis(57.4%) might complicate with hepatitis B virus infection, whereas 12.0% of the students responded that bronchitis was one of the complications of hepatitis B infection. In summary of the above results, we highly recommend that health education program for eradication of hepatitis B virus infection should be introduced in curricula of secondary school education in this country.

• 한국멀티미디어학회논문지
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• 제11권3호
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• pp.364-372
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• 2008

하나의 의학용어체계가 모든 의학 개념을 표현할 수 없으므로 전자의무기록의 각 영역에 적합한 의학용어를 적용하고 용어들을 효과적으로 연계하는 것이 실제 임상에서 매우 유용한 방법이다. 표준용어의 편리하고 효율적인 활용을 위해서는 임상과나 임상의의 사용목적에 적합한 범주를 구분하고, 구분한 범주에 입각하여 사용가능성 높은 용어들을 추출하여 정리한 용어 Subset의 개발이 요구된다. 또한 Subset은 표준용어체계의 변경이나 수정, 사용자의 새로운 요구에 알맞도록 지속적으로 개발과 업그레이드가 가능해야 한다. 본 연구에서는 부산대학교병원 신경외과환자의 퇴원요약지를 대상으로 추출된 주호소, 증상, 진단 및 수술명, 과거 시술명의 추출된 자료를 추출하고 분석하였다. 그리고 subset 데이터베이스를 생성하고 추가되는 용어에 대해서는 임상의가 직접 참조용어와의 매핑을 통해 새로운 데이터베이스를 생성될 수 있도록 Subset 에디터를 개발하였다. 결론적으로 본 연구는 용어체계의 방대함으로 인해 생기는 문제점과 비효율성을 줄일 수 있는 효과적인 관리 방법이 될 것이다.

• 대한안과학회지
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• 제59권12호
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• pp.1181-1184
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• 2018

목적: 선천 눈물샘소관 샛길은 드물게 보고되었으며 아직까지 국내에서는 보고된 바 없다. 본 증례에서는 선천 눈물샘소관 샛길을 경험하였기에 이를 보고하고자 한다. 증례요약: 우측 윗눈꺼풀 외측 피부에 위치한 구멍을 통해 투명한 액체 고임을 주소로 생후 3개월 여아가 내원하였다. 재태연령 35주 3일에 태어났으며, 그 외 특이 과거력은 없었고 다른 안과적인 이상은 발견되지 않았다. 내원 당시 우측 상안검 외측에서 무색의 투명한 액체가 고인 직경 약 2 mm 크기의 개구부가 보였으며, 개구부 주변으로 감염을 의심할 만한 소견은 없었다. 눈물고임 증상을 동반한 눈물소관 샛길 소견으로 전신마취하 눈물소관 샛길의 완전절제 및 병리생검을 시행하였으며, 조직학적 소견상 눈물소관 샛길을 진단하였다. 수술 후 우측 윗눈꺼풀 외측 눈물흘림은 호전되었고, 재발 소견은 관찰되지 않았다. 결론: 현재까지 국내에서 보고된 적 없는 선천 눈물샘소관 샛길 및 이의 치료 과정을 경험하였기에 이를 보고하고자 한다.

• 환경영향평가
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• 제31권1호
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• pp.1-10
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• 2022

본 연구는 비점오염원 저감시설인 차집시설을 대상으로 다양한 강우조건에 따라 초기우수 유출수의 수질특성을 파악하고, 용존성 오염물질의 기원을 파악하기 위하여 수행되었다. 본 연구는 도시지역 내 위치한 G-배수구역의 10개 차집시설 중 비강우시에도 불명수가 유입되는 것으로 조사된 차집시설 #1, #5, #8, #9 및 #10 등 5개 지점에서 수질분석을 통하여 차집시설에서 비점오염물질의 유출특성을 파악하였다. 연구결과로써 강우량에 따라 차집시설에서 우수유출수의 수질특성에 영향을 받는 것으로 판단되었다. 비강우시 EC, BOD, TOC, TN의 평균농도는 강우시에 비하여 높은 것으로 조사되었으며, DO의 평균농도는 강우시에 비하여 낮은 것으로 조사되었다. 또한, 차집시설에서 유출수의 용존성 유기물은 주로 내부에서 생성된 유기물로 구성된 것으로 판단되었다. 우수유출수는 주변 환경에서 유입되는 오염물질의 영향을 많이 받으며, 강우로 인하여 차집시설의 외부로부터 유입되는 난분해성 휴믹계 물질이 많아진 것으로 판단된다.