Comparative studies for the performance of a natural gas steam reforming in a membrane reactor

이보름,임한권 한국가스학회 2016 한국가스학회지 Vol.20 No.6

For a natural gas steam reforming, comparative studies of the performance in a conventional packed-bed reactor and a membrane reactor, a new conceptual reactor consisting of a reactor with series of hydrogen separation membranes, have been performed. Based on experimental kinetics reported by Xu and Froment, a process simulation model was developed with Aspen HYSYSⓇ, a commercial process simulator, and effects of various operating conditions like temperature, H2 permeance, and Ar sweep gas flow rate on the performance in a membrane reactor were investigated in terms of reactant conversion and H2 yield enhancement showing improved H2 yield and methane conversion in a membrane reactor. In addition, a preliminary cost estimation focusing on natural gas consumption to supply heat required for the system was carried out and feasibility of possible cost savings in a membrane reactor was assessed with a cost saving of 10.94% in a membrane reactor.

주재육의 무학십의(舞學十議)에 근거한 영성소무(靈星小舞)의 구조

이보름,김기화 한국무용연구학회 2018 한국무용연구 Vol.36 No.4

This research tried to make summary on the Chu Tsai-yu’s theory of Mu-Hak-Sib-Ui in 『Ak-Ryul-Jeon-Seo(樂律全書)』, and also tried to highlight the structure of Young-Seong-So-Mu(the dance for the spirit of agriculture) based on this theory. Chu Tsai-yu(朱載堉) tried to make a theory necessary to pass A-Ak-Il-Mu(dancing in line for ancestrial rite in palace) through Mu-Hak-Sib-Ui(舞學十議) made of studying dance, dancer, title of dance, tool for dance, dancing in line, dancing table, dancing voice, dancing face, dancing costume, list for dance. He wanted to pass A-Ak-Il-Mu that is based on the thought of Yeak(keeping politeness and rejoicing life at the same time), one of main thought in Confucianism. ①The entire structure of Young-Seong-So-Mu is first, the dancers enter guided by a Buddhist, second, the dancers practice eight dances of Young-Seong-So-Mu, third, they leave the stage guided by a Buddhist. ② The detailed structure of eight dances of Young-Seong-So-Mu have same formal structure in a big picture of Young-Sung-So-Mu. ③ Eight dancing movement has different dancing tools in the dancing, but in the shape and movement they have same repeated structure. 영성소무는 농사에 대한 제사인 영성제의 본질을 생각할 수 있는 농기구를 무구로 사용하여 추는 아악일무이다. 본 연구는 『악률전서』에 전하는 주재육의 무학십의(舞學十議)의 이론을 정리하고, 이 이론을 바탕으로 영성소무의 구조를 밝히고자 하였다. 주재육은 무학(舞學), 무인(舞人), 무명(舞名), 무기(舞器), 무일(舞佾), 무표(舞表), 무성(舞聲), 무용(舞容), 무의(舞衣), 무보(舞譜)의 무학십의를 통해 아악일무의 전승에 필요한 이론을 구축하여 유가의 중심적인 예악사상에 기반 한 아악일무를 전승하고자 하였다. ‘주재육의 무학십의에 근거한 영성소무의 구조’는 영성소무의 전체 진행구조, 여덟 단계 춤의 진행구조, 각 단계별 춤의 동작 구조로 나누어 논의하였다. ① 영성소무의 전체 진행구조는 첫째, 불자의 인도로 입장하고, 둘째, 영성소무의 여덟 개의 춤을 연행하고, 셋째 불자의 인도로 퇴장하는 구조를 갖는다. ② 영성소무의 여덟 단계 춤의 세부적인 구조 역시 모두 영성소무의 큰 틀 안에서 같은 형식적 구조를 갖는다. ③ 여덟 개 춤의 춤동작은 서로 다른 여덟 개의 무구를 들고 춤을 추고 있으나 춤의 형태 및 동작에서는 동일한 반복구조를 갖는다.

손상 모발을 위한 EPA 함유 샴푸 개발

이보름,이옥상,강태진,임성실 한국임상약학회 2011 한국임상약학회지 Vol.21 No.3

Parametric studies for CO2 reforming of methane in a membrane reactor as a new CO2 utilization process

이보름,임한권 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.1

A one-dimensional reactor model was employed to perform parametric studies for CO2 reforming of methane in a membrane reactor to investigate its feasibility as a new CO2 utilization process. The effect of key variables such as hydrogen permeance and Ar sweep gas flow rate to facilitate H2 transport from a shell side (retentate) to a tube side (permeate) on the performance in a membrane reactor was studied at various temperatures with numerical simulation validated by experimental results. In addition, increase in CH4 conversion and H2 yield enhancement observed in membrane reactor was successfully confirmed by profiles of H2 partial pressure difference between shell and tube sides. From the numerical simulation studies, the feasibility of using a membrane reactor for CO2 reforming of methane was confirmed by increased CH4 conversion and H2 yield enhancement compared to a packed-bed reactor at the same condition, which in turn leads to significant cost reductions due to a reduced operating temperature. Moreover, a window of H2 permeance and a guideline for Ar sweep gas flow rate for the efficient membrane reactor design was obtained from this study.

포디프레임.지오지브라.3D펜을 활용한 융합교육 프로그램이 초등학교 4학년 영재학생들의 창의·융합 역량에 미치는 영향

이보름,박호걸,백성혜 한국교원대학교 교육연구원 2020 敎員敎育 Vol.36 No.2

This study focused on the development of convergence education programs using 4D Frame,GeoGebra, 3D pen for geometry content in mathematics (shape basics, various triangles and squares,polygons, circle elements, and planar movements). The researchers verified the effects of the developed programs on the convergence competency for creativity of 4th grade gifted students. The subjects of this study were ten male students and eight female students. The research method involved a one-group pretest-post test design in which an evaluation sheet was inserted before and after implementing the developed educational program for the students. The results of this study areas follows. First, the mathematics class applying the developed convergence education program had a statistically significant effect on the development of convergence ability for creativity of 4th grade gifted students. However, the humanist factor among the sub-factors was not significant. Second,according to the results of peer reviews, students considered the following to be important‘consideration for the other party' in communication and cooperation; ‘thinking to see things or phenomena differently' in creative insight, in other fields of knowledge; ‘understanding of each technology (curricular) itself to be combined’; and ‘human empathy' in humanism. This analysis provided insight into the growth and development of each student. The results of this study confirmed that the education program developed to enhance the creativity for students who will be the main axis of the future society was effective. 본 연구는 초등학교 3-4학년군 수학 교과의 도형의 기초, 여러 가지 삼각형과 사각형, 다각형,원의 구성 요소, 평면도형의 이동을 중심으로 포디프레임과 지오지브라, 3D 펜을 활용한 융합교육프로그램을 개발하고, 초등학교 4학년 영재학생들을 대상으로 창의·융합 역량에 대한 효과를 검증하였다. 연구대상은 경남 창원시 소재 U초등학교 4학년 영재학급 학생으로 남학생 10명, 여학생8명, 총 18명이었다. 연구방법은 프로그램의 개발과 단일집단 사전사후 측정방법을 사용하였다. 본연구의 결과는 다음과 같다. 첫째, 개발된 융합교육 프로그램을 적용한 수학 수업이 초등학교 4학년 영재학급 학생들의 창의·융합 역량 발달에 통계적으로 유의미한 효과가 있었다. 하지만 하위요인 중 인본주의 요인의 경우 유의미하지 않았다. 둘째, 동료평가지 분석 결과 학생들이 생각하는창의·융합 역량 하위요인 별 핵심 요인 중 소통과 협력에서는 ‘상대방에 대한 배려’, 창의적 통찰력에서는 ‘사물이나 현상을 다르게 볼 수 있는 발상’, 타 분야의 지식에서는 ‘결합되는 각 기술(교과)자체에 대한 이해력’, 인본주의에서는 ‘공감 능력’이라고 생각하는 것으로 나타났다. 이러한 분석을통해 학생 개개인의 성장과 발달 정도를 파악할 수 있었다. 본 연구의 결과를 통해 미래사회의 주축이 될 학생들의 창의·융합 역량 증진을 위하여 개발한 융합교육 프로그램이 효과적임을 확인할수 있었다.

수소경제사회 실현을 위한 액체 유기 수소캐리어를 이용한 수소 수송 관련 예비 경제성 평가

이보름,이현준,문창환,문상봉,임한권 한국수소및신에너지학회 2019 한국수소 및 신에너지학회논문집 Vol.30 No.2

Reliable H2 supply is necessary for entering a H2 society. Among the various H2 storage and transportation methods, liquid organic H2 carrier (LOHC) is in the spotlight because of a lot of advantages compared to conventional one such as compressed H2 and liquefied H2. Therefore, we performed preliminary economic analysis of H2 supply cost using LOHC for a H2 production capacity of 300 Nm3 h-1 employing itemized cost estimation and sensitivity analysis to evaluate economic viability of this technology in Korea.

한국 궁중무용의 모듈식 교육체계 방안 -한·중 문헌에 전하는 춤사위 용어를 중심으로-

이보름 영남춤학회 2022 영남춤학회誌 Vol.10 No.2

This study examines the characteristics of dance terms based on literatures in Korea and China to form a systematic academic basis for Korean court dance and to find a modular education system plan which can be applied in various fields of practical education sites, and the module hierarchy of Korean court dance was structured based on it. As a result, it was classified into a total of nine types of forms, including movement indicating the direction, head (face) movement, body movement, hand movement, movement using footwork, foot movement, symbolic movement comparing courtesy or dance movement, overall posture movement of body and martial arts movement, and structured the hierarchy as large, medium and small module using classified dance terms. Large module was embodied in body part, spatial composition, expression (symbol) and armor, and medium module, as a sub-hierarchy of large module, was composed of head, body, arm (hand) and leg (foot) of body part, and the spatial composition was composed of direction, formation and movement, and the expression (symbol) was composed of courtesy and comparison (metaphor), and the armor was composed with utilization. Small module structured the hierarchy with a dance which corresponds to the minimum unit of the medium module. Existing movement patters can be dismantled and creative movement of new interpretation can be choreographed as a way of structured ‘modular education system of Korean court dance’, and it can develop new dance by selecting the movements of desired elements in large, medium and small modules. Each dance movements can create creative thinking using autonomy, individualization and diversity and it will be possible to use it for a lot of contents to recreate traditional Korean dance, that is, to produce new creative works. 본 연구는 한국 궁중무용의 체계적인 학문적 기초를 형성하고 실기교육의 현장에서 다양하게 응용할 수 있는 모듈식 교육체계 방안을 모색하였다. 이를 위해 한국과 중국의 문헌을 바탕으로 춤사위 용어의 특징을 고찰하고, 이것을 토대로 한국 궁중무용 춤사위의 모듈 위계를 구조화하였다. 구조화된 모듈은 궁중무용 학습에 필요한 ‘모듈식 교육체계’로 새로운 교육적 접근을 시도하였다. 그 결과 방향을 지시하는 동작, 머리(얼굴) 동작, 몸 동작, 손 동작, 보법을 사용하는 이동 동작, 발 동작, 예(禮) 또는 춤동작을 비유하는 상징 동작, 몸의 전체적인 자세 동작[身手之勢], 무구 동작 등 총 9종의 형식으로 분류하였으며 분류된 춤사위 용어를 활용하여 대모듈, 중모듈, 소모듈의 위계를 구조화하였다. 대모듈은 신체부위, 공간구성, 표현(상징), 무구로 구체화 시켰으며 중모듈은 대모듈의 하위 위계로 신체부위는 머리, 몸, 팔(손), 다리(발)로 구성하였으며, 공간구성은 방향, 대형, 이동으로 구성하고 표현(상징)은 예의와 비유(은유)로 구성, 무구는 활용으로 구성하였다. 소모듈은 중모듈을 이루는 최소 단위에 해당하는 춤사위로 위계를 구조화시켰다. 구조화된 ‘한국 궁중무용의 모듈식 교육체계’의 방안으로는 기존 동작 패턴을 해체 시키고 새로운 해석의 창의적 동작을 안무할 수 있는데, 이는 대모듈, 중모듈, 소모듈에서 원하는 요소의 동작들을 선별하여 새로운 춤사위를 개발할 수 있다. 각 춤동작들은 자율성, 개별화, 다양성을 이용하여 창의적인 사고를 만들 수 있으며 이를 통해 한국 전통무용의 재창작, 즉 새로운 창의적 작품을 생산하는데 많은 콘텐츠로써 활용이 가능할 것이다.

Graphene/carbon nanotubes hybrid materials for supercapacitors

이보름,장동욱 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1

Chemically linked Graphene/carbon nanotubes hybrid materials have been produced by unique acid-catalyzed dehydration reactions between graphene oxides and amine-functionalized carbon nanotubes. The structures of hybrid materials have been investigated by FT-IR, Raman, XRD, TGA, SEM and TEM. Interestingly, these materials show the great potential for high performance supercapacitor electrodes, exhibiting a high specific capacitance of 195 F/g and 173 F/g in basic and acidic medium, respectively, with improved long term stability up to 10,000 cycles.

Graphene/Multi-Walled Carbon Nanotubes Hybrid Materials for Supercapacitors

이보름,장동욱 한국청정기술학회 2015 청정기술 Vol.21 No.1

We have developed a versatile method for the preparation of chemically linked graphene/multi-walled carbonnanotubes (MWNTs) hybrid materials via simple acid-catalyzed dehydration reaction between graphene oxide (GO) and aminefunctionalizedMWNTs (af-MWNTs). In this condition, ketone (-C=O) groups in GO and primary amine (-NH2) moieties inaf-MWNTs readily react to form imine (-C=N-) linkage. The chemical structures of graphene/MWNTs hybrid materials havebeen investigated using various microscopic and spectroscopic measurements. As a result of the synergetic effects of hybridmaterials such as improved surface area and the superior structural restoration of graphitic networks, the hybrid materials demonstrateimproved capacitance with excellent long-term stability. Furthermore, controlled experiments were conducted to optimizethe weight ratio of graphene/MWNTs in hybrid materials. The highest capacitance of 132.4 F/g was obtained from the GM7.5material, in which the weight ratio between graphene and MWNTs was adjusted to 7.5/1, in 1M KOH electrolyte at a scan rate of100 mV/s.

손상 모발을 위한 EPA 함유 샴푸 개발

이보름,이옥상,강태진,임성실 한국임상약학회 2011 한국임상약학회지 Vol.21 No.2