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Kowalewski Maciej,Bartłomiejski Robert 한국식품연구원 2022 Journal of Ethnic Foods Vol.9 No.-
At the center of our research is the 'Paprykarz' ( Paprikash —fish and rice sandwich pate ), local fish food which is an example of the relations and networks in a field of maritime culture. These relations address both the question of the social memory of national fishing industry and a regional identity. Sold originally in a tin, ‘Paprykarz’ was an export hit in the 1980s, In fact, it was a domesticated version of a Senegalese dish, called Tiep bou dienn Sénégalais , Thieboudienne , The story of paprikash is an unusually interesting one for those researching ethnic food, due to the complexity of its case. The many intersecting narratives about paprikash include stories from the food and fisheries industries; stories of political transformation, domestication, Soviet colonialism, and Creolisation; stories, too, about creating local identity, about nutritional habits, and the idea of slow food .
Aftabuzzaman, M.,Kim, Chang Ki,Kowalewski, Tomasz,Matyjaszewski, Krzysztof,Kim, Hwan Kyu Royal Society of Chemistry 2019 Journal of Materials Chemistry A Vol.7 No.35
<P>To date, the facile preparation of ruthenium nanoparticles homogeneously dispersed in mesoporous carbons remains a big challenge. Here, a poly(butyl acrylate)-<I>b</I>-polyacrylonitrile block copolymer was dissolved in dimethyl sulfoxide with ruthenium(iii) acetylacetonate (Ru(acac)3) and then pyrolyzed after electrospinning. Ru(acac)3 was confined in the polymer network and converted to RuO2, which was further reduced to Ru nanoparticles (Ru-NPs) at high temperature, eventually producing well-dispersed Ru-NPs embedded in STMCs (Ru-NPs@STMCs). The as-prepared Ru-NPs@STMCs show many attractive features, such as spherical shape with a high surface area, numerous active species (Ru and N), and an interconnected structure with meso/micropores, resulting in fast mass transport and ion diffusion pathways. The synergetic effect of Ru-NPs and STMCs gives rise to excellent electrochemical performance, with a very high specific gravimetric capacitance of 656.25 F g<SUP>−1</SUP> at a scan rate of 10 mV s<SUP>−1</SUP>, good rate capability, and excellent long-term cycling stability (almost 100% retention after 5000 cycles). To our knowledge, this performance is one of the best results reported for Ru/carbon-based materials and is comparable to that of other RuO2/carbon-based materials. This study not only gives insights into the design and construction of novel nanocomposites for high-performance supercapacitors but also provides a new approach to engineering metal/carbon composites applicable to energy storage and energy conversion devices.</P>
Kim, Chang Ki,Zhou, Haoran,Kowalewski, Tomasz,Matyjaszewski, Krzysztof,Kim, Hwan Kyu American Chemical Society 2019 ACS APPLIED MATERIALS & INTERFACES Vol.11 No.2
<P>Among various photovoltaic devices, dye-sensitized solar cells (DSSCs) are one of the most potentially clean and renewable energy conversion devices because of their low fabrication cost, environmentally friendly nature, and high power conversion efficiency. However, the use of rare metals such as Pt counter electrodes (CEs) is one of the major drawbacks of DSSC devices for broad real-life applications. In this regard, alternative materials to Pt CEs have been long sought for DSSCs employing both cobalt and iodine redox couples. Therefore, in this study, soft-templated tellurium-doped mesoporous carbons (<B>Te-SMC</B>s) were synthesized for the first time by the simple pyrolysis of PAN-<I>b</I>-PBA block copolymer in the presence of a tellurium precursor for replacing the Pt CE. To confirm the chemical composition and porosity, the as-prepared <B>Te-SMC</B> materials were evaluated by elemental analysis (XPS and EDS) and nitrogen sorption isotherms measurement. The as-prepared <B>Te-SMC</B> materials contained mainly mesopores and retained the three-dimensional hierarchical graphite-like structure with many defect sites. They displayed doping levels with nitrogen of 9.15 atom % and tellurium of 0.15 atom % and had a specific surface area of 540 m<SUP>2</SUP> g<SUP>-1</SUP>. Therefore, these characteristics enabled the development of a high-performance CE in DSSCs with cobalt and iodine redox couples. As a result of its catalytic performance, <B>Te-SMC</B> exhibited outstanding electrocatalytic activity as well as a significantly improved electrochemical stability than those of Pt CE for both redox couples even after 1000 potential cycles. The results show that a maximum conversion efficiency of 11.64 and 9.67% could be achieved under one sun illumination (AM 1.5G) for <B>SGT-021</B>/Co(bpy)<SUB>3</SUB><SUP>2+/3+</SUP>- and <B>N719</B>/I<SUP>-</SUP>/I<SUB>3</SUB><SUP>-</SUP>-based devices with <B>Te-SMC</B> CEs, and their power conversion efficiency is superior to the corresponding device with Pt CEs.</P> [FIG OMISSION]</BR>