폐, 간, 피부에 병발한 삼중성 원발암 1예

민경민 대한내과학회 2018 대한내과학회 추계학술대회 Vol.2018 No.1

반복적 그림책 읽기 활동이 유아의 읽기 동기 및 읽기 흥미도에 미치는 영향

민경민,김수향 한국어린이문학교육학회 2022 어린이문학교육연구 Vol.23 No.2

The purpose of this study was to examine the effect of repetitive picture book reading activity on children's reading motivation and reading interest. The subjects of this study were 44 children aged 4 and 5 (22 in the experimental group and 22 in the comparison group) at the S daycare center and G daycare center, located in P city, Gyeongsangbuk-do, with a similar socioeconomic level. The experiment was conducted 24 times in 8 weeks from October 7, 2019 to November 30, 2019. The experimental group performed the repetitive reading of picture books by Morrow (2011), and the comparison group performed a general picture book reading activity. The research results are as follows. First, the repetitive picture book reading activity improved the children's reading motivation and sub-factors of self-efficacy, internal purpose, external purpose, and social aspect. Second, it was found that the repetitive picture book reading activity had a positive effect on the children's reading interest. In conclusion, in terms of educational it is suggested that the repetitive picture book reading activity is an activity that has a positive effect on children's reading motivation and reading interest.

복합주조용 Al-Si-Mg 합금의 인장성질, 부식특성 및 주철과의 접합계면 화합물에 미치는 Cu 및 Zr 첨가의 영향

민경민,정기채,신제식,김정민 한국재료학회 2023 한국재료학회지 Vol.33 No.1

In order to broaden the range of application of light weight aluminum alloys, it is necessary to enhance the mechanical properties of the alloys and combine them with other materials, such as cast iron. In this study, the effects of adding small amounts of Cu and Zr to the Al-Si-Mg based alloy on tensile properties and corrosion characteristics were investigated, and the effect of the addition on the interfacial compounds layer with the cast iron was also analyzed. Although the tensile strength of the Al-Si-Mg alloy was not significantly affected by the additions of Cu and Zr, the corrosion resistance in 3.5 %NaCl solution was found to be somewhat lowered in this research. The influence of Cu and Zr addition on the type and thickness of the interfacial compounds layer formed during compound casting with cast iron was not significant, and the main interfacial compounds were identified to be Al5FeSi and Al8Fe2Si phases, as in the case of the Al-Si-Mg alloys.

고령의 류마티스관절염 환자에서 Denosumab 사용 후 발생한 화농성 관절염/골수염 3예

민경민,방소영,이혜순 대한내과학회 2020 대한내과학회 추계학술대회 Vol.2020 No.1

대상별, 질환별 산림치유 프로그램 주제범위 문헌고찰 - 국내 학술논문을 중심으로 -

민경민,연평식,김진건 한국산림휴양복지학회 2022 한국산림휴양학회지 Vol.26 No.3

This study was aimed to present the research status by applying Scoping review methodology to studies related to forest therapy programs by subjects and disease, and to provide basic data for program development by subjects. To this purpose, literature was searched for journal articles published until March31, 2022 using the research database(RISS, KISS, Science ON, DBpia), and research characteristics(research trends, subjects, measurement tools) and program characteristics(environmental characteristics, proceeding characteristics) were reviewed. As a result, it was found that the research trend has been conducted in earnest since 2011, and the subjects were mainly subject vulnerable to stress and were widely conducted to patients with diseases. However, studies on patients with diseases were 1~3 papers per KCD code. In terms of program characteristics, the sites was mainly forest welfare facilities and general forests, and it was conducted in various types of sites by subject. The season had the highest rate of summer, followed by spring and autumn. The types of programs were mainly conducted in the one day-session type and stay type, and the frequency of use of the session type programs was high for mental health patients. Looking at the program composition, stay type programs were mainly 3 days and 2 nights and 2 days and 1 night, and the session-type programs consisted mainly of once a week, 6~15 sessions, and 1~10 weeks. In particular, it was found that most of the patients with diseases proceed with a period of 1~10 weeks. Through the results of this study, the characteristics of forest therapy programs by subjects and diseases, subjects of the research that have been conducted so far have been confirmed, and it is expected to be used as basic data for future forest therapy programs development and effectiveness verification. 본 연구는 국내 대상별, 질환별 산림치유 프로그램 관련 연구를 대상으로 주제범위 문헌고찰 방법론을 적용하여 연구 현황을 제시하고 대상별로 프로그램 개발을 위한 기초자료를 제공하고자 실시하였다. 이를 위해 국내 문헌데이터베이스(RISS, KISS, Science ON, DBpia)를 활용하여 2022년 3월 31일까지 게재된 국내 학술논문을 대상으로 문헌 검색을 진행하였으며, 최종 선정된 62편의 문헌을 대상으로 연구 특성(연구동향, 대상자, 측정 도구)과 프로그램 특성(환경적 특성, 운영 특성)을 검토하였다. 그 결과 연구 동향은 2011년부터 본격적으로 연구가 수행되었음을알수 있었으며, 대상자는 주로 스트레스에 취약한 대상을 중심으로 질환자까지 폭넓게 이루어지고 있었다. 하지만, 질환자 대상 연구는 KCD 코드별 1~3편이었다. 측정 도구를 살펴보면 생리적 측정 도구는 주로 심박변이도(HRV)를 활용하였고, 심리적 측정 도구는 주로 우울, 스트레스 관련 척도를 활용한 것으로 나타났다. 프로그램 특성에서 장소는 주로 산림복지시설과 일반적인 숲이었으며, 대상별로 다양한 유형의 장소에서 진행되었다. 계절은 여름의 비율이 가장 높았고 그다음으로 봄, 가을이 비슷한 수준이었다. 프로그램의 유형은 주로 당일 회기형과 숙박형으로 진행되었으며, 정신건강 질환자를 대상으로 회기형 프로그램의 활용 빈도가 높았다. 프로그램 구성을 살펴보면 숙박형 프로그램은 주로 2박 3일과 1박 2일이었고, 회기형 프로그램은 주로 주 1회, 6~15회기, 기간은 1~10주로 구성되었다. 특히, 질환자를 대상으로 대부분 1~10주 기간으로 진행하는 것을 알 수 있었다. 본 연구의 결과를 통해 현재까지 진행된 연구의 대상자와 대상별, 질환별 산림치유 프로그램의 특성을 확인하였으며, 향후 산림치유 프로그램 개발과 효과성 검증을 위한 기초자료로 활용되기를 기대한다.

Effects of Sr Additions on the Interfacial Reaction Layers Formed between Liquid Al-Si-Cu Alloy and Cast Iron

민경민,신제식,김정민 한국재료학회 2023 한국재료학회지 Vol.33 No.9

This study investigated the growth behavior and characteristics of compounds formed at the interface between a liquid Al-Si-Cu alloy and solid cast iron. Through microstructural analyses, it was observed that various AlFe and AlFeSi phases are formed at the interface, and the relative proportion of each phase changes when small amounts of strontium are added to the Al alloy. The results of the microstructural analysis indicate that the primary phases of the interfacial compounds in the Al-Si-Cu base alloy are Al8Fe2Si and Al4.5FeSi. However, in the Sr-added alloys, significant amounts of binary AlFe intermetallic compounds such as Al5Fe2 and Al13Fe4 formed, in addition to the AlFeSi phases. The inclusion of Sr has a slight diminishing effect on the rate at which the interfacial compounds layer thickens during the time the liquid Al alloy is in contact with the cast iron. The study also discusses the nano-indentation hardness and micro-hardness of the interfacial phases.

Recurrence Rate and Predictors of Electrophysiology Study Induced Atrial Fibrillation

민경민,온영근 대한내과학회 2019 대한내과학회 추계학술대회 Vol.2019 No.1

Characteristics of iron based activated carbon composite (IBACC) and adsorption of hydrogen sulfide

민경민,이성우,곽진호,박경선,김대근,김신동 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1

This study was conducted to develop porous material for H₂S adsorption and to investigate physical properties. IBACCs were manufactured as below. First, 38% FeCl₃ solution and activated carbon were mixed with stirring and slowly titrated with 1M (NH₄)₂CO₃ until pH 7.0, It was named as IBACC-A. Second, 38% FeCl₃ solution and activated carbon were mixed with stirring and slowly titrated with 1M NaOH until pH 7.0, It was named as IBACC-B. Adsorption capacity of hydrogen sulfide was measured by breakthrough test(the outflow concentration of breakthrough point has been until 5% of inflow concentration). IBACCs were analyzed with XRD, BET surface area, SEM, PSD. Adsorption capacities of IBACC-A and IBACC-B were 0.069 g/g, 0.072g/g.

수소이온농도에 따라서 제조된 수산화철 흡착제의 황화수소 흡착 및 물리적 특성

민경민,김신동,김나은,서영주,곽진호,이성우,김대근,박성순 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0

최근 혐기성소화에서 발생하는 바이오가스의 처리와 이용이 쟁점이 되고 있으며, 이에 황화수소 제거는 악취방지와 바이오가스 정제에 필수적인 요소이다. 황화수소 제거기술로 건식처리와 습식처리가 있으며, 건식처리에는 흡착제를 이용한 처리가 있다. 이에 활성탄, 수산화철, 산화철 등이 황화수소 흡착제로 사용되고 있다. 본 연구에서는 수산화철 흡착제를 제조하여 실험을 수행하였다. 서로 다른 수소이 온농도를 갖는 수산화철의 황화수소 흡착특성을 조사하였고, 상대습도와 황화수소 흡착성능과의 관계를 파악하였다. pH에 따라서 흡착능의 증감 경향이 나타났으며, 상대습도와 관련하여 황화수소 흡착능과의 연관성을 보였다. 흡착능은 파과테스트로 평가되었으며, 물리적 특성은 PSA, BET 비표면적, SEM, XRD를 통하여 분석하였다.

Contact ND YAG Laser로 치료한 알레르기성 비염의 병리조직학적 연구

민경민,김해송,박은호,홍성범,박건 대한이비인후과학회 1997 대한이비인후과학회지 두경부외과학 Vol.40 No.12