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중국 우한 코로나 사례를 통한 재난지역 긴급물류의 성과에 미치는 요인에 관한 연구 : 한국 긴급물류 운영에 대한 시사점 도출
왕멍난(Mengnan Wang),이언승(Eon-Seong Lee) 한국무역연구원 2021 무역연구 Vol.17 No.4
Purpose - This study, against the backdrop of the city of Wuhan, China, where COVID-19 first appeared, examines the factors that affect the effectiveness and efficiency of emergency logistics through empirical research on relief organizations that support Wuhan, China, during the fight against COVID-19. This study also studies how the government’s control situation affects the effectiveness and efficiency of emergency logistics. Design/Methodology/Approach - We employed a quantitative research method using survey data collected in Wuhan, China. This paper tested five hypotheses which assumes the effect of transportation system, inter-organizational cooperation, emergency logistics center location and demand and inventory management on the emergency logistics performance. In addition, we also examined a moderating role of government control on those hypothesized relationships. Findings - We found that transportation system, inter-organizational cooperation, emergency logistics center location and demand and inventory management affected the emergency logisitcs performance positively, and government control have moderated those reloationships partially. Research Implications - This findings may give meaningful insights on successful management of emergency logistics in Korea.
Mengnan Qu,Yichen Zhou,Lili Ma,Yi Zhang,Jiaxin Wang,Shanxin Xiong,Lihua Shen,Jinmei He 한국섬유공학회 2021 Fibers and polymers Vol.22 No.3
Stimulus-responsive materials with controllable oil/water separation performance have prodigious potentialapplication. Here, a new thought for low-cost, time-saving, flexible approach has been developed to prepare a pH-responsivematerial with switchable superamphiphobicity and superoleophobicity-superhydrophilicity. The as-prepared material can beeasily applied onto multifarious substrates and presents stable superamphiphobicity. However, when the modified material istreated by alkaline solution, its surface wettability turns superhydrophilicity and superoleophobicity, thus water is allowed topenetrate through the material whereas the oil was blocked on the surface. Moreover, the surface wettability can be recoveredto superamphiphobicity quickly via treating the material with acidic aqueous. Hence, such a controllable water wettabilityand stable oil repellency property endows the as-prepared material with excellent capability to separate water from oil/watermixture. In addition, the pH-responsive materials can maintain switchable wettability after being treated by acid and alkalinumerous cycles. Furthermore, the obtained materials also exhibit excellent recyclable, self-cleaning and flame-resistantperformance, which shows potential applications for smart water-oil separators and fire-shielding protectors.
Jinmei He,Yi Zhang,Yichen Zhou,Jiaxin Wang,Yu Zhao,Lili Ma,Ansar Abbas,Mengnan Qu 한국섬유공학회 2019 Fibers and polymers Vol.20 No.5
In recent years, the superhydrophobic fabrics with specific wetting property had attracted extensive attention of theresearcher and industry for their extraordinary performance. In this report, a robust superhydrophobic fabric with oil/waterseparation property and load carrying capacity had been successfully prepared by introducing the modified magnesium oxide(MgO) and aluminate. It has proved that the modified fabric has excellent stability through tape peeling test, folding test,washing experiment and pH test. In particular, the fabric weight of 200 g could be moved by 22 m on 600 # sandpaperwithout losing superhydrophobic property. Besides, the fabric can separate oil and water from different oil-water mixtureswith a separation efficiency of over 90 %, using superhydrophilic-superoleophobic properties. Otherwise, it is 66.8 N/m2 thatloadable pressure of the fabric in water. The superhydrophobic fabric has tremendously wide applications in the field of oilcontainingwastewater and diving equipment.