세계의 모습을 비추는 커다란 거울 (서평)

이혜민 한국서양중세사학회 2007 西洋中世史硏究 Vol.0 No.20

Determination of the optimum porosity for 2-CEES adsorption by activated carbon fiber from various precursors

이혜민,이병훈,김주환,안계혁,박수진,김병주 한국탄소학회 2019 Carbon Letters Vol.29 No.6

In this study, we prepared ACFs with a high specific surface area from various precursors (rayon, pitch, and oxidized polyacrylonitrile-based fibers) by a steam-activation technique and investigated the effects of the micropore and mesopore fraction on 2-CEES adsorption behaviors. The activation time was precisely controlled so that the activation yield was in the range of 35–40% to ensure the mechanical properties of the ACFs. The N2 adsorption isotherm characteristics at 77K were confirmed by Brunauer–Emmett–Teller, Barrett–Joyner–Halenda and non-local density functional theory equations. The adsorption capacities of the ACF were measured by breakthrough experiments in the gas phase (750 μg/mL of 2-CEES in N2 flow). The removal efficiency of the ACFs was evaluated and compared with that of AC. From the results, specific surface areas and total pore volume of the ACF were determined to be 1380–1670 m2/g and 0.61–0.82 cm3/g, respectively. It was also observed that various pore characteristics of ACF were found to be dependent on crystallite structure of each precursor. The break through time (C/C0 = 0.10) was in the order of Oxi-Pan-H-9-2 < Saratoga AC < Rayon-H-9-3 < Pitch-H-9-4. This indicates that 2-CEES adsorption capacity could be a function not only of specific surface area or total pore volume, but also of sub-mesopore volume fraction in the range of 1.5–2.5 nm of adsorbents.

A New Record of Siriella trispina (Crustacea, Mysida, Mysidae) from the Southern Coast of Korea

이혜민,김미진,송성준,김원 한국동물분류학회 2017 Animal Systematics, Evolution and Diversity Vol.33 No.4

The opossum shrimp, Siriella Dana, 1850 belongs to the family Mysidae Haworth, 1825. It is the genus of an enormous number of species with frequent morphological variations comprising 84 valid species to date. Among the species, Siriella trispina Ii, 1964 has been recorded from the Yellow Sea and the East China Sea is reported from Korean water for the first time. Siriella trispina is characterized by its exceedingly elongated 5th pair of thoracopods, the spines on the inner ventral margin of the uropodal endopod armed with secondary spinules, and 4-5 pairs of spines on the base of the telson. In the present study, we describe Korean specimens of the species in detail with photographs and illustrations. Siriella trispina is the 8th Siriella species found in Korean fauna.

1P-355 Effect of H₂O Activation on the Electrochemical Performance of Pitch-based Activated Carbon Fibers for EDLC

이혜민,박수진,김병주 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1

In this study, activated carbonfibers (ACFs) were prepared for supercapacitor electrode applications by using isotropic pitch under steam activation conditions. The surface morphologies and micro-structural characteristics of activated carbons were observed by SEM and XRD, respectively. The N₂ adsorption isotherm characteristics at 77K were confirmed by BET and DR equations. From the results, specific surface areas and total pore volume of the ACFs were determined as 1250~2790 ㎡/g and 0.50~1.37 ㎤/g, respectively. It was also observed that various pore size distributions were found to be depended on the functions of activation time and temperature. The ACFs were applied as an electrode for EDLCs and analyzed in relation to the activation conditions.

2P-684 Porous hard carbon prepared from polymeric precursor for hydrogen storage

이혜민,박수진,김병주 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1

In this study, activated polymer-based hard carbons were prepared using various steam activation conditions in order to enhance their hydrogen storage ability. The structural characteristics of the activated carbons were observed by XRD and Raman spectroscopy. The N₂ adsorption isotherm characteristics at 77K were confirmed by BET, BJH and NDFT equations. The hydrogen storage behaviours of the activated carbons at 298K and 10 MPa were studied using a PCT apparatus. From the results, specific surface areas and total pore volume of the activated carbons were determined to be 1680-2320 ㎡/g and 0.78-1.39 ㎤/g, respectively. In the observed result, the hydrogen adsorption of APHS-9-4 increased about 30% more than that of as-prepared hard carbon. This indicates that hydrogen storage capacity could be a function not only of specific surface area or total pore volume, but also of micropore volume fraction in the range of 0.63 to 0.78 nm of adsorbents.

로베르 가갱의 『프랑스사 개요』에 나타나는 변경지방사 서술

이혜민 명지대학교(서울캠퍼스) 인문과학연구소 2017 인문과학연구논총 Vol.38 No.2

This paper analyzes how the humanist historian Robert Gaguin treated the history of his native region, Artois-Flandres, in his Compendium de origine et gestis Francorum. Gaguin made an active choice of his identity by residing permanently in Paris without returning home, and by writing a French history in order to glorify the kingdom of France. Gaguin’s intention for incorporating the history of Artois-Flandres region is particularly evident in the way he composes his history book. Gaguin argues in various ways that this northern border region was and is part of France and French history. Firstly, the engraving frontispiece on the front page of the book includes the Flemish blazon, clearly manifesting the intention to incorporate Flanders as a territory of French kingdom. He also argues that this border region’s history is a part of French history by inserting a list of Flemish counts’ genealogy in the midst of chapter 10. In addition, when Gaguin describes Louis XI’s conquest war in the northern border region in 1477, he specifically highlights the resistance and surrender of the people of Arras, thus bringing it into the center of narrative. The image of Arras’ resistance against Louis XI seems to be reminiscent of the relationship between Gaulois and Caesar in his translation of the Gallic Wars.

Facile preparation of activated carbon with optimal pore range for high butane working capacity

이혜민,이병훈,안계혁,박수진,김병주 한국탄소학회 2020 Carbon Letters Vol.30 No.3

In this work, the correlation between the pore characteristics of activated carbon (AC) and the adsorption/desorption charac�teristics of evaporated fuel was studied. AC was prepared by various physical re-activation methods using coconut-derived commercial AC. Pore characteristics of the re-activated AC were investigated using N2/77 K adsorption isotherms. The structural characteristics of the AC were observed by X-ray difraction and Raman spectroscopy. The butane working capacity was observed according to ASTM D5228. From the results, the specifc surface area and total pore volume of the ACs were determined to be 1380–2040 m2 /g and 0.60–0.96 cm3 /g, respectively. It was also observed that various pore size distributions were found to be dependent on the functions of the activation method and time. A close relationship between butane activity/ retentivity and micropore/mesopore volumes was found. In addition, it was inferred that the volume fraction of micropores and sub-mesopores with diameters between 1.5 and 3.0 nm primarily controls butane activity.

2P-427 Porous hard carbon prepared from polymeric precursor for hydrogen storage

이혜민,허영정,박수진,김병주 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.0

Experiences of and barriers to transition-related healthcare among Korean transgender adults: focus on gender identity disorder diagnosis, hormone therapy, and sex reassignment surgery

이혜민,박주영,최보경,이호림,김승섭 한국역학회 2018 Epidemiology and Health Vol.40 No.-

OBJECTIVES: Transgender people may encounter barriers to transition-related healthcare services. This study aimed to investigate the experiences of transition-related healthcare and barriers to those procedures among transgender adults in Korea. METHODS: In 2017, we conducted a nationwide cross-sectional survey of 278 transgender adults, which named Rainbow Connection Project II, in Korea. We assessed the prevalence of transition-related healthcare, including gender identity disorder (GID) diagnosis, hormone therapy, and sex reassignment surgery. To understand the barriers to those procedures, we also asked participants for their reasons for not receiving each procedure. Further, this study examined their experiences of and the reasons for using non-prescribed hormone medications. RESULTS: Of transgender people participated in the survey, 91.0% (n=253/278) were diagnosed with GID, 88.0% (n=243/276) received hormone therapy, and 42.4% (n=115/271) have had any kind of sex reassignment surgery. Cost was the most common barrier to transition-related healthcare among Korean transgender adults. Other common barriers were identified as follows: negative experiences in healthcare settings, lack of specialized healthcare professionals and facilities, and social stigma against transgender people. Among those who had taken hormone medications, 25.1% (n=61/243) reported that they had ever purchased them without a prescription. CONCLUSIONS: Our findings suggest that barriers to transition-related healthcare exist in Korea and constrain transgender individuals’ safe access to the needed healthcare. Institutional interventions are strongly recommended to improve access to transition-related healthcare. These interventions include provision of programs to train Korean healthcare professionals and expansion of national health insurance to include these procedures.

혀의 죄악'과 신성모독 : 중세의 언어적 일탈

이혜민 한국서양중세사학회 2009 한국서양중세사학회 연구발표회 Vol.60 No.-