반도체 ․ 디스플레이 산업의 국가 온실가스 감축계수 개발을 위한 기초 연구

우지윤,강성민,전의찬 한국기후변화학회 2023 한국기후변화학회지 Vol.14 No.4

This is a preliminary study for the development of national destruction or removal efficiencies (DREs) related to process gases in the semiconductor and display industries. The study obtained data from workplaces that apply DREs, and confirmed the level of emission factors through data outlier treatment and calculating and comparing DREs for process gases. The study collected Tier 3 data for four types of greenhouse gases generated during semiconductor and display processes, including CF4, c-C4F8, CHF3 and SF6. We divided the data into three cases based on outlier treatment methods and calculated DREs for the semiconductor and display industries then analyzed the uncertainty of the results. All DRE values except for the Case I value of CF4 were larger than the default emission factors provided by the 2006 IPCC GL applied to the current national emission calculation. The uncertainty analysis of DREs for process gases showed that the study results had a smaller uncertainty range than the range provided by IPCC. Currently, the default emission factors provided by the 2006 IPCC GL applied to the national emission calculation in Korea may overestimate greenhouse gas emissions in the domestic semiconductor and display industries, as they do not reflect the current technological level in Korea. Therefore, there is a need to develop national DREs that reflects the domestic situation. This study can be used as a basis for improving the reliability of greenhouse gas inventories in the semiconductor and display industries for global stocktaking.

국내 한 상급종합병원의 의약정보실 내 질의응답 사례 분석

우지윤,고혜랑,정지혜,강진숙,황보신이 한국병원약사회 2019 병원약사회지 Vol.36 No.4

Backgrounds and Objective : In the drug information center (DIC) of hospitals, there are two ways of providing drug information. One is passive provision, i.e. answering drug-related inquiries from health care professionals. The other is active provision, i.e. according to the need for providing information. With respect to active provision of drug information in DIC, there are the drug handbook, CDSS (Clinical Decision Support System) drug information, newsletter, and so on. The objective of this study was to analyze Q & A records as a method for assessing the utilization of active medical information. Methods : The drug information resources, among cases of providing drug information by DIC were all analyzed. The Q & A records that were taken by the DIC over the period of January to December 2016 were analyzed for various parameters such as status of inquirer, classification of inquiry, drug inquired and drug information resources. Additionally, analysis was also carried out on whether the answers could be provided within in-hospital drug information resources. Results : 1,600 inquiries were collected for analysis. Most of inquirers were nurses (88.1%). Most of the classification of inquiries were stability/compatibility (28.6%), administration/dosage (17.6%) and drug availability (12.2%) and the most of inquiries by dosage form was injectable drugs (65.7%). 45.1% of answers could be provided within in-hospital drug information resources as references, and CDSS drug information and the CMC drug handbook were the most used resources, making up 79.9% of the total. Among injectable drug related inquiries, most were in 22.3% of parenteral nutrition products, 17.1% of vaccines. For parenteral nutrition products, inquiries about ingredients/preparations (47.5%), stability/ compatibility (35%) were the most common. For vaccines, the DIC received inquiries on drug availability (26.9%), prescription code (23.9%) and administration/dosage (17.9%). Conclusions : According to the analysis, a great number of inquiries were from nurses and were about injectable drugs. For the in-hospital drug information resources, the CMC drug handbook and CDSS drug information were mostly used.

영농부산물 노천소각 실태 및 대표시료 확보 방안 연구

우지윤,송새눈,김민욱,김승진,이동은,전의찬 한국대기환경학회 2022 한국대기환경학회 학술대회논문집 Vol.2022 No.10

농업분야 암모니아 인벤토리 개선 연구

우지윤,오세근,장은숙,전의찬 한국대기환경학회 2020 한국대기환경학회 학술대회논문집 Vol.2020 No.10

Preparation and properties of ABS/PLA composites with different type of compatibilizers

우지윤,이근영,윤진산 한국고분자학회 2009 한국고분자학회 학술대회 연구논문 초록집 Vol.2009 No.10

Preparation and Properties of High impact polypropylene/CaCO₃ Composites

우지윤,심재훈,유광식,윤진산 한국고분자학회 2008 한국고분자학회 학술대회 연구논문 초록집 Vol.33 No.2

Unfractionated Heparin 투여 환자의 Activated Partial Thromboplastin Time (aPTT)에 영향을 미치는 요인 평가

우지윤,안혜림,박은하,한옥연,나현오 한국병원약사회 2015 병원약사회지 Vol.32 No.2

Unfractionated heparin (UFH) is an anticoagulant, widely used for more than 50 years. In order to induce a target effect, a weight-adjusted dosing regimen is used due to the large deviation of responses among the patients. Even with an accurate heparin dose based on one’s weight, but depending on the patient, many cases cannot maintain aPTT within the target range. Therefore, this study aimed to analyze correlations between the aPTT measured 12 hours after the administration, and clinicopathologic factors of the patients, in order to understand which factors affect the results of aPTT. First, medical records of 87 cardiovascular patients, who were hospitalized in a cardiac intensive care unit from September 2012 to August 2013 receiving UFH at the rate of 12 IU/kg/hr (±10%), were reviewed and analyzed. They were checked to see whether there were differences of aPTT results 12 hours after the administration based on the various clinicopathologic factors of the patient, such as gender, age, weight, diabetes mellitus, and smoking history. A correlation between aPTT results and any bleeding (a heparin-related adverse reaction) was also studied. The mean aPTT measured 12 hours after the start of administration was 50.22 sec (± 21.32). The mean aPTT was lower in male patients (p= 0.0048) less than 65 years old (p= 0.0002) weighed 70 kg or more (p= 0.0063) and had a creatinine clearance (CrCl) of 50 ml/min or more (p= 0.0001), when compared to other groups. They also had a higher ratio of the patients who did not meet the target aPTT. Patients with a malignant tumor (p= 0.0050) or pulmonary embolism (p= 0.0206) had a higher mean aPTT, and a higher patient ratio exceeding the target aPTT. Among them, a malignant tumor's significant effect was confirmed with a multiple regression analysis. Malignant tumor patients showed an increase of aPTT by about 25% (p= 0.0122). Heparin-related bleeding occurred in 23 patients (26.44%), and although incidence of bleeding was higher in the patients who exceeded the target range of aPTT, its significance was a marginal value (p= 0.0575). It can be concluded that a malignant tumor is a potential factor to increase aPTT levels, but gender, age, body weight, renal function, or pulmonary embolism may be the affecting factors. If we can reveal the accurate affecting factors through additional studies with a large number of patients, we can safely and effectively pursue the heparin dose-adjustment method.

Preparation and Properties of High Impact Polypropylene with Different Sizes of CaCO₃ Particles

우지윤,심재훈,이근영,윤진산 한국고분자학회 2009 한국고분자학회 학술대회 연구논문 초록집 Vol.2009 No.4

비료사용농경지의 NH₃ 배출량 산정 방법론 비교 연구

우지윤,송새눈,전의찬 한국대기환경학회 2021 한국대기환경학회 학술대회논문집 Vol.2021 No.10

초미세먼지(PM-2.5)는 생성기작에 따라 발생원에서 고체 상태의 먼지로 배출되는 직접배출과 NOx, SOx등 가스 상태로 배출된 물질이 공기 중 다른 물질과 만나 화학반응을 통해 미세먼지가 되는 2차 생성으로 구분할 수 있다. 2차 생성은 국내 PM-2.5의 72% 이상을 이루고 있으며, 고농도 사례일수가 증가함에 따라 2차 생성물질 관리의 중요성이 대두되고 있다. 2017년 기준, 국내 암모니아 배출량의 79.3%가 농축산분야에서 배출되었고, 이 중 7.3%가 비료사용농경지에서 배출되고 있다. 국내 농경지에 투여되는 비료사용량은 OECD 회원국 중 최고 수준으로 과도하게 투여되고 있어 관련 기초연구가 필수적이다. 본 연구에서는 정확하고 신뢰도 높은 배출량을 산정하고자 현행 배출량 산정방식을 검토하고, 한계점에 대한 개선 방안을 도출하고자 한다.

지방대학생의 불확실성에 대한 인내력 부족과 진로불안의 관계 : 사회비교경향성과 자기자비의 순차적 매개효과

우지윤(Woo, Ji Yun),김영화(Kim, Young Hwa) 학습자중심교과교육학회 2021 학습자중심교과교육연구 Vol.21 No.13

목적 본 연구의 목적은 지방대학생이 인식하는 불확실성에 대한 인내력 부족과 진로불안의 관계에서 사회비교경향성과 자기자비의 순차적 매개효과를 탐색하여 지방대학생의 진로발달 지원을 위한 기초 자료를 제공하는 것이다. 방법 이를 위해 지방대학생 290명을 대상으로 진로불안, 불확실성에 대한 인내력 부족, 사회비교경향성, 자기자비, 인구통계학적 특성으로 구성된 설문을 실시한 후 진로불안을 준거변인으로, 불확실성에 대한 인내력 부족을 예측변인으로 설정한 후 이들 간의 관계에서 사회비교경향성과 자기자비가 순차적 매개효과를 보이는지 탐색하였다. 결과 수집된 자료를 분석한 주요 결과는 다음과 같다. 첫째, 진로불안은 불확실성에 대한 인내력 부족, 사회비교경향성과는 유의한 정적 상관관계를, 자기자비와는 유의한 부적 상관관계를 나타내었다. 둘째, 불확실성에 대한 인내력 부족과 진로불안의 관계에서 사회비교경향성, 자기자비의 순차적 매개효과를 검증한 결과 불확실성에 대한 인내력 부족이 높을수록 높은 사회비교경향성이 나타나고, 이는 곧 낮은 자기자비로 연결되어, 높은 진로불안으로 이어지는 간접 경로가 유의한 것으로 확인되었다. 결론 이러한 연구결과를 토대로 지방대학생이 경험하는 진로불안을 조력하기 위한 진로상담 및 서비스에 대한 시사점을 논하고, 본 연구의 제한점 및 후속연구에 대한 제언을 논의하였다. Objectives The purpose of the current study was to examine the serial mediating effects of social comparison orientation and self compassion on the relationship between intolerance of uncertainty and career anxiety for college students in non-Seoul-Metropolitan-Area Methods A sample of 290 college students in non-Seoul areas completed self-report surveys on career anxiety, intolerance of uncertainty, social comparison orientation, and self-compassion. Multiple regression analysis and bootstrapping was applied to test the serial mediation of social comparison orientation and self-compassion on the relationship between intolerance of uncertainty and career anxiety. Results The results showed that intolerance of uncertainty and social comparison orientation were positively correlated with career anxiety. Meanwhile, self compassion was negatively correlated with career anxiety. Additionally, social comparison orientation and self-compassions were found to mediate the relationship between intolerance of uncertainty and career anxiety. Conclusions Overall, results suggest the need for further investigation of the important role of social comparison and self-compassion related to uncertainty tolerance and career anxiety of college students in non-Seoul areas. Based on the findings of this study, the researchers discussed ways to improve career counseling and services at non-Seoul areas to support college students who experience emotional difficulties in their career development. Limitations and implications for future research were also discussed.