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알칼리 침출법을 통한 초경 공구의 재활용 및 자전연소합성법을 통해 제조된 나노급 탄화텅스텐 제조공정 연구
강희남,정동일,김영일,박상철,남철우,서석준,이진영,이빈 한국분말재료학회 2022 한국분말재료학회지 (KPMI) Vol.29 No.1
Tungsten carbide is widely used in carbide tools. However, its production process generates a significant number of end-of-life products and by-products. Therefore, it is necessary to develop efficient recycling methods and investigate the remanufacturing of tungsten carbide using recycled materials. Herein, we have recovered 99.9% of the tungsten in cemented carbide hard scrap as tungsten oxide via an alkali leaching process. Subsequently, using the recovered tungsten oxide as a starting material, tungsten carbide has been produced by employing a self-propagating high-temperature synthesis (SHS) method. SHS is advantageous as it reduces the reaction time and is energy-efficient. Tungsten carbide with a carbon content of 6.18 wt % and a particle size of 116 nm has been successfully synthesized by optimizing the SHS process parameters, pulverization, and mixing. In this study, a series of processes for the highefficiency recycling and quality improvement of tungsten-based materials have been developed.
연교(連翹) 에탄올 추출물의 대식세포의 염증성 사이토카인 합성과 신호전달에 대한 조절
남정범 ( Jung Bum Nam ),이미화 ( Mi Hwa Lee ),최호영 ( Ho Young Choi ),손낙원 ( Nak Won Sohn ),강희 ( Hee Kang ) 대한본초학회 2012 大韓本草學會誌 Vol.27 No.1
Objective: This study was performed to evaluate the effect of Forsythiae Fructus (FF) ethanol extract on inflammatory cytokine production and its underlying mechanisms in mouse macrophages. Methods: Peritoneal macrophages from thioglycollate medium-injected mice were cultured and stimulated with lipopolysaccharide(LPS) or LPS/interferon(IFN)-γ for cytokine measurement and cellular signaling molecule analysis. Results: FF ethanol extract decreased the levels of secreted tumor necrosis factor(TNF)-α and interleukin(IL)-6 in IFN-γ/LPS-stimulated cells in a concentration-dependent manner. FF extract reduced IFN-γ/LPS-induced STAT1 phosphorylation and LPS-induced p38 and JNK activation, but not ERK1/2 activity. The extract also inhibited LPS-induced IκBα degradation through suppression of IκBα kinase. Conclusions: These results suggest that FF ethanol extract affects the production of TNF-α and IL-6 through inhibition of activation of STAT-1, IκBα, p38, and JNK.
경북 마이스 산업의 유니크 베뉴에 대한 이해관계자 인식
남태석(Tae-Suk Nam),강희석(Hee-Seog Kang) 한국엔터테인먼트산업학회 2018 한국엔터테인먼트산업학회 학술대회 논문집 Vol.2018 No.11
본 연구는 경상북도의 마이스 산업의 유니크 베뉴 활성화 방안을 모색하기 위해 마이스 산업 · 유니크 베뉴관계자, 정부기관 실무자, 컨벤션 센터 실무자 그리고 컨벤션 · 유니크 베뉴 관련 관광학 교수를 대상으로 FGI(포커스 그룹 인터뷰)를 통한 질적 연구를 수행하였다. 결론적으로, 본 연구에 참여한 FGI 대상자들은 경상북도 마이스 산업과 유니크 베뉴을 연계한 관광상품 활성화에 관한 인식 및 경북 지역 활성화를 위해서는 경북지역 컨벤센센터을 연계한 다양한 관광상품과 지역의 지속가능한 발전에 관심을 보였다. 즉 마이스 산업 · 유니크 베뉴 관계자는 정부 및 지자체에서 정책적인 지원 및 시설 노후화로 인한 실무적인 지원에 대한 부분이 부족하고, 지방자치단체 간의 협력적 네트워크 구축과 이를 통한 각 지역의 이해관계자 모두 윈-윈하는 전략을 펼칠 필요가 있을 것이다. 특히 경북 지역의 각 지자체 단체장의 관심이 필요하며, 경북지역의 유니크 상품 다양화에 개발 필요성에 대한 부분이 필요하다고 지적하였다. 경북지역의 마이스 산업과 유니크 베뉴 활성화를 위해서는 경상북도와 컨벤센 센터와 연계한 전략적 제휴가 필요하며, 경북지역의 통합 컨벤션뷰로 신설에 대한 장기적인 판매 전략이 필요하다고 제시하였다. 본 연구는 FGI 분석 결과를 통한 질적 연구를 수행하였기 때문에 분석결과를 일반화하기에는 다소 한계점이 있다. 이를 극복하기 위해서는 향후 구조화된 설문조사를 통한 정량적 연구로 보다 타당성 높은 연구결과를 담보할 수 있을 것이다. 또한 경북지역의 마이스 산업·유니크 베뉴 관계자, 정부기관 실무자, 다양한 분야의 교수에 대한 표본의 수를 좀 더 확보하여 분석방법의 타당도와 신뢰도를 높일 수 있도록 질적 연구를 강화하기 위한 노력도 수반되어야 할 것이다. This study was conducted by MICE Industry and UNIQUE VENUE in North Gyeongsang Province, government agencies, convention centers, and convention and United Nations. Through FGI analysis results, various stakeholders such as MICE industry in North Gyeongsang Province recognized by stakeholders, issue of disabling Unique VENUE, product development for continuous growth, and activation of UNIQUE VENUE products. FGI participants in the study showed a variety of sustainable tourism products linking the development of the convention center in North Gyeongsang Province to recognize the activation of tourism products linking the MICE industry and UNIQUE MICE industry and UNIQUE VENUE officials are lacking in the areas of government and local governments in terms of policy support and practical support due to aging facilities.
강희석,남태석 (사)한국관광레저학회 2017 관광레저연구 Vol.29 No.11
These days, marine tourism is one of the rapidly growing areas. Especially, marine tourism in the South coast is highly attractive, and particularly climatic conditions and nature environment are providing optimal settings for sports activities. Through the study, the characteristics of activities and development and marketing strategy in marine tourism has successfully analyzed to identify opportunity and risk factors simultaneously. As a new era of marine tourism has come, marine tourism industries which considered as high-value-added industry can be located main industry in the market. The development of marine tourism resources on the southern coast would bring a marvelous ripple effect.
코로나 시대의 경주지역 숙박산업 활성화 방안에 관한 이해관계자 인식 연구: FGI(심층면접) 중심으로
강희석(Kang, Hee-Seog),남태석(Nam, Tae-Suk) 한국관광레저학회 2021 한국관광레저학회 학술발표대회 Vol.2021 No.7
The accommodation industry in the recent post-covid 19 is rapidly changing in terms of safe and hygienic service, marketing and customer service, due to the needs of guests who prioritize safety. In this study, in order to study the problems and revitalization measures of the accommodation industry in the Covid 19 in the Gyeongju, we will enable the product package by the method of FGI and utilize it in cooperation with the experience tourism program in the region. In order to seek the development of a sustainable accommodation industry by revitalizing the economy of the Gyeongju region and revitalizing accommodation. To revitalize the accommodation industry, Gyeongsangbuk-do and Gyeongju City will support the reconstruction of tourism infrastructure and human resource development to strengthen accessibility, improve the system, joint public relations / marketing, and financial support for facility renovation, Presented that a realistic response is necessary.
경북 마이스 산업의 유니크 베뉴에 대한 이해관계자 인식: Focus Group Interview(FGI)를 통한질적 연구
강희석,남태석 한국엔터테인먼트산업학회 2018 한국엔터테인먼트산업학회논문지 Vol.12 No.8
This study was conducted by MICE Industry and UNIQUE VENUE in North Gyeongsang Province, government agencies, convention centers, and convention and United Nations. Through FGI analysis results, various stakeholders such as MICE industry in North Gyeongsang Province recognized by stakeholders, issue of disabling Unique VENUE, product development for continuous growth, and activation of UNIQUE VENUE products. FGI participants in the study showed a variety of sustainable tourism products linking the development of the convention center in North Gyeongsang Province to recognize the activation of tourism products linking the MICE industry and UNIQUE. MICE industry and UNIQUE VENUE officials are lacking in the areas of government and local governments in terms of policy support and practical support due to aging facilities.