순환골재 품질인증업무 처리요령 11회 개정연혁 및 내용에 대한 고찰

전수민 한국산학기술학회 2023 한국산학기술학회논문지 Vol.24 No.12

The quality certification of recycled aggregate is based on the Construction Waste Recycling Promotion Act under the jurisdiction of the Ministry of Environment, and details of the certification are specified in the regulations on quality certification and management of recycled aggregate under the Ministry of Land, Infrastructure, and Transport. Practical work procedures in accordance with the above-mentioned higher laws are specified in 'the instructions for quality certification of recycled aggregate.' The instructions were first enacted in June 2006, and 11 revisions have been made, including the most recent revision in November 2022. This study examined the history of the revision of the instructions, which are the most practical rules related to quality certification over the past 17 years. Through this, it is intended to help those involved in recycled aggregates, such as 402 certified companies, understand the government's work direction for quality certification in detail, and promote the recycling of construction waste by activating quality certification.

Group Ⅲ-V Semiconducting Nanocrystals For Hybrid Display Materials

전수민,디박,이광섭 한국고분자학회 2013 한국고분자학회 학술대회 연구논문 초록집 Vol.2013 No.4

내화뿜칠재 보와 기둥의 내화성능 분리평가에 대한 실험적 연구

전수민,김재준 한국화재소방학회 2015 한국화재소방학회논문지 Vol.29 No.4

It is necessary to obtain a fire resistance certification in order to use SFRM in Korea. The fire resistance tests for certificationsare performed separately for beams and columns and the certifications are different. We could assume that thesame SFRM has different thicknesses for beams and columns because the conditions of the fire resistance tests for themdiffer in the section factors etc. But most of the SFRMs in Korea have the same thicknesses for beams and columns. Sothe question arises as to there were the differences between the fire test results for beams and columns reside. The purposeof this study is to consider the separate evaluation of the fire resistance of members through a comparative analysisof the temperature data obtained from fire certification tests. 강구조용 내화뿜칠재는 내화구조로 인정을 받아야 사용할 수 있는데 내화뿜칠재 인정시 보와 기둥이 분리되어 평가 및인정되고 있다. 보와 기둥의 내화시험 표준시험체는 단면형상계수 등이 상이하므로 내화피복 두께산정방법(KS F 2848)에 따르면 동일피복재를 사용하는 경우 동일성능의 보용 뿜칠재와 기둥용 뿜칠재는 피복두께가 상이할 것으로 예상할 수있다. 그러나 현재 인정이 유효한 내화뿜칠재의 보 · 기둥 피복두께는 제품별로 서로 동일하거나 매우 유사하다. 그렇다면 동 뿜칠재의 내화구조 인정을 위한 성능시험시 보와 기둥의 강재평균온도에 차이가 있었을 것이라고 추정해 볼 수있다. 본 연구를 통하여 보용 또는 기둥용 내화뿜칠재의 강재평균온도를 비교분석하여, 보용 · 기둥용으로 분리하여 평가 및 인정하고 있는 현 제도를 검토해 보고자 한다.

Assessing the Risk-Rescue Rating Scale and Acute Physiology and Chronic Health Evaluation II scores for investigating factors related to intensive care unit admissions of deliberate self-poisoning patients visiting emergency departments

전수민,이덕희,김혜진 대한응급의학회 2023 대한응급의학회지 Vol.34 No.1

Objective: The Risk-Rescue Rating Scale (RRRS) is generally implemented to predict the lethality of suicide attempts, whereas the Acute Physiology and Chronic Health Evaluation II (APACHE-II) scoring system is applied as an accurate measure of the severity of patient condition of patients admitted to intensive care units (ICUs). Using the RRRS and APACHE-II scores, in this study, we aimed to investigate the factors related to ICU admissions of deliberate self-poisoning (DSP) patients admitted to emergency departments (EDs). Methods: The epidemiologic and psychologic factors, electronic medical records, and laboratory tests of DSP patients were prospectively collected and analyzed. We divided the patients into two groups, an ICU admission group and a non- ICU admission group. Results: This study included 387 patients, 333 (86.0%) of which were in the non-ICU group and 54 (14.0%) in the ICU admission group. Multivariate logistic analysis was conducted to independently associate the ICU admissions with RRRS (odds ratio [OR], 1.40; 95% confidence interval [CI], 1.27-1.55; P<0.01), APACHE-II scores (OR, 1.11; 95% CI, 1.03- 1.21; P=0.01), and amylase values (OR, 1.01; 95% CI, 1.00-1.01; P=0.02). A receiver operating characteristics (ROC) curve analysis of the decision for admission to the ICU yielded the following scores for RRRS and APACHE II—cutoff values of 39.5 and 8.5, sensitivity of 96% and 66.0%, specificity of 74.0% and 75.1%, and area under the ROC curve (AUC) values of 0.95 and 0.74, respectively (P<0.01). Conclusion: The RRRS and APACHE-II scores could be used to determine ICU admissions in DSP patients admitted to the ED.

Synthesis and Applications of Organic - Quantum Dot Hybrid Materials

전수민,이광섭,박성연,주진수,이용백 한국고분자학회 2012 한국고분자학회 학술대회 연구논문 초록집 Vol.2012 No.4

캡슐화-탈수화-유리화에 의한 국화 품종 '화이트 엔디' 신초의 초저온 동결보존

전수민,김창길 경북대학교 농업생명과학대학 2014 Current Research on Agriculture and Life Sciences Vol.32 No.2

본 실험은 국화의 바이로이드 제거에 이용되는 초저온처리 시 국화 품종 'White ND'을 적합한 처리조건을 확립하기 위해 초저온처리의 단계별 요인을 실험하였다. 그 결과 생장점의 크기는 1 mm(엽원기 2~3매 포함)에서 높은 생존율과 신초 재생율을 나타내었고, vitirification 처리시 PVS3가 효과적이었으며, 처리 시간은 60분 처리 하였을 때 높은 생존율 및 정 상 신초 재생율을 보였다. 또한 vitrification을 위한 전처리 조건은 sucrose 농도를 88 mM 24시간, sucrose 0.3 M 16시간, sucrose 0.5 M 6시간, sucrose 0.7 M 3시간으로 처리하는 것이 초저온 처리 후 생존율 및 신초 재생율을 높이는데 효과적이었으며, 재생된 정상 식물체는 모본과 비교하여 ploidy level이 동일한 것으로 보아 식물체의 유전적 변이가 일어나지 않았다. This study investigated the effects of cryopreserving Chrysanthemum morifolium cv. 'White ND' shoot tips for eliminating viroids. As a result, smaller shoot tips (2-3 LP, 1mm) showed a better survival and regrowth than larger shoot tips (4-5 LP, 1.5mm). The most effective vitrification solution for survival and regrowth was PVS3, which induced a high survival rate after 60 minutes of incubation. For a high efficiency, the best pre-treatment condition for vitrification was incubation in 88 mM sucrose for 24 h, 0.3M sucrose for 16 h, 0.5 M sucrose for 6 h, and 0.7 M sucrose for 3 h, in a descending order. The ploidy levels were the same in the mother plants and following cryopreservation, which confirmed the absence of any gene mutation.

적정기술과 시장중심적 접근법

전수민 한국국제협력단 2014 개발과 이슈 Vol.- No.16

Fabrication of Porous ZnO Nanorods with Nano-sized Pores and Their Properties

전수민,이동율,김진수,김종수,이주인,김민수,조민영,최현영,임광국,김건식,김형근,임재영 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.57 No.6

Porous ZnO nanorods were fabricated by using an annealing process at 300, 500, and 700 ℃ for 20 min in an argon atmosphere. The structural and the optical properties of the porous ZnO nanorods were characterized by using X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and photoluminescence (PL). The pore density of the porous ZnO nanorods decreased and the average diameter of the pores increased with increasing annealing temperature. The intensity of the ZnO (002) diffraction peak for the porous ZnO nanorods was stronger than that of the as-grown ZnO nanorod. The PL intensity ratio of the near-band-edge emission (NBE) to the deep-level emission (DLE) of the porous ZnO nanorods was larger than that of the as-grown ZnO nanorods. In addition, as the average diameter of the pores increased, the PL intensity ratio of the porous ZnO nanorods gradually increased.

컨테이너 터미널에서의 AGV의 교착방지를 위한 주행영역 예약 표 작성방법

전수민,김갑환,Jeon, Su-Min,Kim, Kap-Hwan 한국시뮬레이션학회 2008 한국시뮬레이션학회 논문지 Vol.17 No.3

본 연구는 컨테이너 터미널에서 사용될 수 있는 교착방지를 위한 알고리즘 개발을 목표로 하였다. 기존의 교착방지 알고리즘은 많은 계산시간을 소요한다는 단점을 극복하기 위하여 본 연구에서는 하나의 경로에 대해서 예약스케줄을 작성하여 두고 반복적으로 사용하는 예약 스케줄 표 방식을 제안하였다. 시뮬레이션 실험 결과 예약 스케줄 표 방식은 그때그때의 주행경로에 대한 예약스케줄링을 위하여 계산시간이 필요 없기 때문에 AGV의 실시간 운영을 위하여 유용한 방식임을 알 수 있었다. Automated Guided Vehicles (AGVs) are important equipment in automated container terminals. To utilize AGVs for transporting containers from a position to another, the deadlock is a serious problem that must be solved before they are deployed to real operations. This study assumes that traveling area for AGVs are divided into a large number of grid-blocks and, as a method of traffic control, grid-blocks are reserved in advance during the travel of AGVs. The purposes of the reservation are to make the room between AGVs and to prevent deadlocks. Because the size of an AGV is much larger than the size of a grid-block on guide paths, this study assumes an AGV may occupy more than one grid-block at the same time. This study suggests a method for constructing a table of reservation schedules by using a simulation. A sensitivity analysis was conducted to evaluate the performance of the reservation method in this study.

사후관리 결과 분석을 통한 순환굵은골재 품질인증 3차 시험의 타당성 연구

전수민 한국폐기물자원순환학회 2022 한국폐기물자원순환학회지 Vol.39 No.2

Recycled coarse aggregates are tested twice for certification. If an aggregate passes both tests, the aggregate is certified;if it fails both, the aggregate is not certified. If the aggregate only passes one, then a third test is conducted to certify it for conformance or to terminate it if it does not conform. In other national certifications, such as fire-resistance structures, if one of two quality tests fails, the case is closed, so it can be considered that the quality test for aggregate certification that can be used for the third test is relatively easy. Follow-up audits for the certified products for the past three years were analyzed to see if there is a difference in the post-quality of aggregates certified by the secondary and tertiary tests. The results show no statistically significant difference between the two, and therefore, the tertiary test procedure of the certification process did not negatively affect the quality assurance of recycled aggregate. 없음