물질흐름원가회계 및 전과정평가 기법을 활용한 팔라듐 재자원화 공정의 경제성 및 환경성분석

신가영,이성유,황용우,강홍윤,권택관 한국폐기물자원순환학회 2023 한국폐기물자원순환학회지 Vol.40 No.2

In this study, economic and environmental effects were analyzed by linking material flow cost accounting (MFCA) and life cycle assessment (LCA) methodologies to the process of recycling palladium in a plated spent catalyst solution. Based on an MFCA analysis of recycling 1 kg of palladium, the results indicated that the positive product cost accounted for 82%, whereas 18% was the negative product cost due to material loss, resulting in a total of approximately KRW 139 million. The cost by mass factor indicated that the material cost, including the expenses for catalysts and chemicals, was the highest (57%), followed by the system cost, such as labor and maintenance costs (32%), and the waste management cost (10%). In addition, greenhouse gas (GHG) emissions of 1.97E+03 kgCO2eq were estimated as output cost by using the emission permit in the Korean emission trading system (K-ETS) market, which is equivalent to KRW 50,922. Although this additional output cost on waste management cost was insignificant when 1 kg of Palladium was recycled, this effect would be significant in the future when the amount of recycling increases. Additionally, if the output cost of GHG emissions is applied to the controlled entities under the K-ETS, the effect on waste management costs will be significant.

항만 내 유해화학물질 직반입·출에 대한 위험성 평가

신가영,황용우,천영우 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.1

Association between predictive factors and radiation exposure during ERCP

신가영,오치혁,동석호 대한내과학회 2017 대한내과학회 추계학술발표논문집 Vol.2017 No.1

S-720 다발성 홑신경염(mononeuritis multiplex)을 동반한 Livedoid 혈관염 1예

신가영,하효정,최지영,홍승재,이도경,이연아 대한내과학회 2016 대한내과학회 추계학술발표논문집 Vol.2016 No.1

서론: Livedoid 혈관염은 중년 혹은 젊은 여성에 주로 발생하는 드문 질환으로 하지와 발의 심한 통증을 동반한 궤양을 특징으로 하며 치유되면서 색소침착 및 특징적인 atrophie blanche 병변을 남긴다. 혈관 벽의 유리질화, 혈관 내 혈전과 같은 병리 소견을 보이며, 응고 항진 질환 및 결체조직질환 등의 관련성이 보고되고 있다. 이러한 병변과 말초신경병증이 합병된 경우는 더욱 드물어 지금까지 국내에서는 1예만이 보고되었다. 저자들은 양 발목의 특징적 피부병변과 함께 양 하지 저린감 및 왼쪽 발가락의 배굴(dorsiflexion)이 저하된 환자에서 livedoid 혈관염 및 다발성 홑신경염을 진단하였기에 보고한다. 증례: 29세 여자가 2주전부터 발생한 양 하지의 저린감 및 왼쪽 발가락의 배굴 저하로 방문하였다. 환자는 4년 전부터 양 발목의 부종, 궤양성 피부병변 및 통증이 반복되었다고 하며, 양쪽 복사뼈 주위로 갈색 색소 침착과 백색의 위축성 병변(atrophie blanche)이 관찰되었다. 백혈구 증가 및 C-반응 단백과 적혈구 침강속도의 상승이 있었고 신경전달속도 검사에서 좌측의 경골신경 및 복재신경, 양측의 비복신경을 침범하는 다발성 홑신경염 소견이 관찰되었다. 피부조직 검사에서 Livedoid 혈관염 소견에 합당하였으며, 신경조직 검사에서 혈관 내 유리질화 및 혈전증 관찰되어 조직학적으로도 부합되었다. 항응고제 및 칼슘통로차단제, 스테로이드 투여로 신경학적 증상이 호전되어 퇴원하였으며 외래 추적 관찰 예정이다.

PSC 침목의 저탄소 기술 적용에 따른 탄소 감축 효과 평가 연구

신가영,이철규,정광희,김민정,이재영,김희만 한국철도학회 2024 한국철도학회 학술발표대회논문집 Vol.2024 No.5

The Effect of Digital Transformation on SMEs using O2O Platforms: Focusing on Customer Engagement

신가영,정재연,장문경 한국경영정보학회 2022 Asia Pacific Journal of Information Systems Vol.32 No.3

The purpose of this study is to investigates the effect of SMEs’ digital transformation efforts in O2O platforms on customer engagement. This study focuses on digitalization, which is a practically viable phase for SMEs using O2O platforms among the three digital transformation stages (digitization, digitalization, and digital transformation). This study specifically categorizes digital transformation efforts into three categories: information diversity, responsiveness to customers, and the degree of functional use. To analyze the impact of these efforts on customer engagement, we conducted a zero-inflated negative binomial regression using the dataset provided by Naver SmartPlace, a representative O2O platform in South Korea. The results present that the positive relationship between these aforementioned factors and customer engagement. Thus, this study demonstrates that utilizing O2O platforms can be an effective strategy for SMEs that lack the resources to achieve a successful digital transformation.

산화아연 나노입자 유형이 카라기난 기반 복합 필름의 구조, 기계적 및 항균 특성에 미치는 영향

신가영,김효린,박소윤,박미소,김찬형,허재영 한국식품저장유통학회 2024 한국식품저장유통학회지 Vol.31 No.1

In this study, zinc oxide nanoparticles (ZnONPs) were synthesized using three distinct zinc salts: zinc acetate, zinc chloride, and zinc nitrate. These ZnONPs were subsequently utilized in the fabrication of carrageenan-ZnONPs (Car-ZnONPs) composite films. The study assessed influence of the various ZnONPs on the morphological, water vapor barrier, color, optical, and antimicrobial properties of the Car-ZnONPs composite films. The surface morphology and UV-blocking attributes of the composite films were affected by the type of ZnONPs used, but their surface color, transparency, and chemical structure remained unaltered. The composite film's thickness and elongation at break (EB) significantly increased, while the tensile strength significantly decreased. In contrast, film’s elastic modulus (EM) and water vapor permeability coefficient (WVP) showed no significant difference. All the composite films with added ZnONPs demonstrated potent antibacterial activity against Escherichia coli O157:H7 and Listeria monocytogenes. Among the carrageenan-based composite films, Car-ZnONPsZC showed the highest antibacterial and UV-blocking properties, and its elongation at break was significantly higher than that of the pure carrageenan films. This suggests that ZnONPs composite films have the potential to be used as an active packaging film, preserve the safety of the packaged food and extend shelf life.

사마귀버섯(Thelephora terrestris) 등 한국산 야생 담자균류 32 종의 렉틴활성

신가영,이지선,김용주,김빛나,정경수 충남대학교 약학대학 의약품개발연구소 2004 藥學論文集 Vol.19 No.-

As a preliminary step to develop noble immunomodulatory lectins from Korean basidiomycetes, 32 species of wild mushrooms were collected and their lectin activities were screened using hemagglutination assay. As a result, cold-water extract of 21 species including Thelephora terrestris showed agglutination activities From T. terrestrisa, partially purified lectin fractions, cTTL_(50) and cTTL_(100), were prepared by extraction with cold phosphate-buffered saline (pH 7.2), precipitation with ammonium sulfate and then dialysis Of these. cTTL_(100) was found to be a strong immunomodulating lectin in that it aggluinated BALB/c erythrocytes and sarcoma 180 tumor cells at the concentration of ≥1.95 ㎍/㎖ and ≥39 ㎍/㎖, respectively, and stimulated the peritoneal macrophages to spread at 200 ㎍/㎖.

국내 20대 여성의 허리와 허벅지 형태에 따른 하반신 체형 분류

신가영,도월희 한국의류산업학회 2020 한국의류산업학회지 Vol.22 No.4

This study classified lower body shape according to thigh and waist shape to improve the fit of skinny blue jeans in adult women in their 20s. We analyzed the three-dimensional automatic measurement data, three-dimensional indirect measurement data, and index data using the three-dimensional female (20-29 years old) body scan data provided by Size Korea (6th Korean Human Dimensional Survey Project). Factor analysis was performed to classify body type. We selected and analyzed 34 items related to thigh shape based on index items, angle items, and protrusion amount items from 99 items; consequently, seven factors were extracted and 82.39% of the total variance was explained. Cluster analysis according to factor analysis classified it into 4 types, and a post-test Duncan test was conducted to classify thigh features according to classified types. As a result, the characteristics of lower body shape according to the thigh types of women in their 20s are as follows. Lower Body Type 1 is shape with a more prominent belly and less prominent thighs. Lower Body Type 2 is a slender body figure with larger hips. Lower Body Type 3 has more prominent thighs compared to the waist and belly. Lower Body Type 4 has both a prominent belly and prominent thighs.

‘浦上八國’ 전쟁과 가야와 신라의 관계 변화

신가영 한국고대사학회 2023 韓國古代史硏究 Vol.- No.111

In this article, the existence form of the Gaya was reviewed centering on the War of Posangpalguk, and the background and meaning of small countries in Gaya were not integrated like Silla. The background and purpose of Silla's intervention in The War of Posangpalguk were reviewed, and through this, the changes in the relationship between Gaya and Silla were organized. Since the War of Posangpalguk is almost the only record that shows trends in Gaya, it was studied with interest and analyzed as an opportunity for major changes in Gaya. However, some of the interior of Gaya in the 3rd century can be restored through the War of Posangpalguk, but it is difficult to understand that the entire society of Gaya has changed in conjunction. the War of Posangpalguk was directly related to the changes in Guemgwanguk and affected the relationship with Silla. Meanwhile, it is uncertain whether Alla participated in the War of Posangpalguk. Daegaya, which was located inland, was not directly related to the War of Posangpalguk. There is not enough ground to present Posangpalguk as a Sogaya, and the regional scope needs to be reviewed. We should also move away from the perspective of limiting the War of Posangpalguk to internal events in Gaya. Geumgwanguk was adjacent to Silla, so sometimes they were at odds, but they joined forces to pursue common interests. One of the events that illustrates this well is the War of Posangpalguk. However, the Geumgwanguk gradually lost the right to trade at the mouth of the Nakdon River by Silla amid changes in the trade system due to the War of Posangpalguk and the subsequent extinction of Nakrang and Daebanggun. As a result, Geumgwanguk was unable to subjugate or integrate the surrounding small countries and gradually weakened