This study aimed at examining fashion consumers’ awareness during the COVID-19 pandemic. Big data analysis methods, such as text mining, social network analysis, and regression analysis, were applied to user posts about fashion on Korean portal websites and social media during COVID-19. R 3.4.4, UCINET 6, and SPSS 25.0 software were used to analyze the data. The results were as follows. In researching the popular fashion-related topics during COVID-19, the prevention of infection and prophylaxis were significant concerns in the early stage (Jan 1 to Jan 31, 2020), and changed to online channels and online fashion platforms. Then, various topics and fashion keywords appeared with COVID-19-related keywords afterwards. Fashion-related subjects concerned prophylaxis, home life, digital and beauty products, online channels, and fashion consumption. In comparing fashion consumers’ awareness during COVID-19 with SARS and MERS, “face masks” was the common keyword for all three illnesses; yet, the prevention of infection was a major consumer concern in fashion-related subjects during COVD-19 only. As COVD-19 cases increased, the search volume for face masks, shoes, and home clothes also increased. Consumer awareness about face masks shifted from blocking yellow dust and micro-dust to the sociocultural significance and short supply. Keywords related to performance turned out to be the major awareness as to shoes, and home clothes were repurposed with an expanded range of use.

산화아연 나노물질(나노 ZnO)은 식품산업에서 식품포장재, 식품첨가물 및 아연 보충제 등과 같이 다양한 분야에 사용되고 있으나 생체 내 단백질과의 상호작용 및 그에 따른 독성연구는 미진한 실정이다. 나노물질은 체내에서 생체단백질과의 흡착에 의한 나노-단백질 코로나를 형성할 수 있는데, 이 같은 현상은 나노물질의 흡수, 조직분포 및 독성에 영향을 미칠 수 있을 것이다. 본 연구에서는 입자크기(나노 vs 벌크)에 따른 산화아연의 체내 단백질과 상호작용을 생체모사용액(위액, 장액, 혈장) 및 ex vivo 조직추출액을 이용하여 연구하였다. 그 결과, 모든 생체모사조건에서 나노 ZnO의 표면전하는 벌크 ZnO와 유의적으로 다르게 변화하는 것이 관찰되었고, 혈액모사조건에서 단백질과 상호작용 정도가 더 큰 것으로 확인되었다. 반면, 입자크기에 따른 용해도 및 장관 상피세포 흡수기작의 차이는 나타나지 않았다. 프로테오믹스 분석 결과, 입자크기에 관계없이 알부민, 피브리노겐 및 피브로넥틴이 ZnO-단백질 코로나 형성에 주로 관여하는 혈장단백질로 확인되었으나, 벌크 ZnO 대비 나노 ZnO와의 상호작용 정도가 더 큰 것으로 나타났다. 본 연구결과는 식품용 ZnO의 입자 크기에 따라 체내 단백질과의 상호작용 정도가 달라질 수 있음을 규명함으로써, 향후 나노물질과 생체 내 단백질의 상호작용에 따른 잠재적 독성을 예측하는데 중요한 자료로 활용될 수 있을 것이다.

Hydrogen sulfide (H2S) emitted from various sources is a major odorous compound, and non-thermal plasma (NP) has emerged as a promising technique to eliminate H2S. This study was conducted to investigate lab-scale and pilot-scale NP reactors using corona discharge for the removal of H2S, and the effects of relative humidity, applied electrical power on reactor performance and ozone generation were determined. A gas stream containing H2S was injected to the lab-scale NP reactor, and the changes in H2S and ozone concentration were monitored. In the pilotscale NP experiment, the inlet concentration and flow rate were modified to determine the effect of relative humidity and applied power on the NP performance. In the lab-scale NP experiments, H2S removal was found to be the 1st-order reaction in the presence of ozone. On the other hand, when plasma reaction and ozone generation were initiated after H2S was introduced, the H2S oxidation followed the 0th-order kinetics. The ratio of indirect oxidation by ozone to the overall H2S removal was evaluated using two different experimental findings, indicating that approximately 70% of the overall H2S elimination was accounted for by the indirect oxidation. The pilotscale NP experiments showed that H2S introduced to the reactor was completely removed at low flow rates, and approximately 90% of H2S was eliminated at the gas flow rate of 15 m3/min. Furthermore, the elimination capacity of the pilot-scale NP was 3.4 g/m3·min for the removal of H2S at various inlet concentrations. Finally, the experimental results obtained from both the lab-scale and the pilot-scale reactor operations indicated that the H2S mass removal was proportional to the applied electrical power, and average H2S masses removed per unit electrical power were calculated to be 358 and 348 mg-H2S/kW in the lab-scale and the pilot-scale reactors, respectively. To optimize energy efficiency and prevent the generation of excessive ozone, an appropriate operating time of the NP reactor must be determined.