http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Future Directions of Home Economics Education: Nordic-Baltic Perspectives
Janni Haapaniemi,Päivi Palojoki,Jaana Taar 한국가정과교육학회 2022 한국가정과교육학회지 Vol.34 No.5
The research scope of home economics education (HEE) has widened considerably over the last few decades, influencing pedagogical developments in this field. We read 14 recent dissertations related to HEE in the Nordic-Baltic region and considered the questions that these studies pose for the future of HEE. We concentrated on the following three aspects: to whom this kind of education is relevant, what the content is, and how home economics (HE) can be taught. We demonstrated the need for HE to recognise societal changes and respond to them respectfully while reflecting on how and what to teach in HEE. Our reading prompted us to recommend that HEE use versatile tools and exploratory learning tasks in teaching students critical thinking and reflection skills as well as in overcoming the feeling of time poverty when teaching HE. We argued that HE teachers should use their autonomy to critically reflect on and develop HE curricula and their teaching methods and content in HEE to respond to societal changes.
Deposition of toxic metal particles on rough nanofiltration membranes
Oluranti Agboola,Jannie Maree,Richard Mbaya,Caliphs Musa Zvinowanda,Gomotsegang Fred Molelekwa,Nora Jullok,Bart Van der Bruggen,Alexander Volodine,Chris Van Haesendonck 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.8
Two nanofiltration (NF90 and Nano-Pro-3012) membranes were investigated for their capacity to removemetal ions. This study presents the effect of membrane roughness on the removal of toxic metal ions during dead endmembrane filtration. Atomic force microscopy, scanning electron microscopy, WSXM software and ImageJ were usedto characterize the roughness of the membranes. Gradual decrease in filtration permeate flux was observed as foulantsaccumulated at the interface of the membranes; filtration permeate flux varied from 20 L/m2/h to 14 L/m2/h and 11 L/m2/h to 6 L/m2/h for NF90 and Nano-Pro-3012, respectively. NF90 membrane was more prone to fouling than the Nano-Pro-3012 membrane: the percentage flux reduction was higher for NF90 (3.6%) than Nano-Pro-3012 (0.98%). Thebearing ratio of the fouled NF90 exhibited a high peak of 7.09 nm than the fouled Nano-Pro-3012 with the peak of6.8 nm.