Emission-enhancing effects from a electrochemiluminescence (ECL) device of a 9,10-diphenylanthracene (DPA) dye solution containing a mixture of highly scattering TiO(2) nanoparticles were observed. We confirmed experimentally that there exists an optimum quantity of the highly scattering TiO(2) nanoparticles assisting the emission enhancement in the ECL device of the DPA solution.
Analyses are carried out to study the effects of air velocity, particle circulating rate and fuel/air ratio on the profiles of temperature and heat flux in circulating fluidized bed boilers. The profile of particle concentration within the furnace is obtained by assuming the flow of gas and particles in the system as one-dimensional solid-gas two-phase flow and by considering that the particles are fed from the underside of the furnace with zero velocity, and are accelerated by the up-ward air flow. The radiative heat transfer in the two-phase flow system is solved by using the Monte Carlo method. In the heat-transfer analysis, the walls surrounding the system are considered as gray walls, and the two-dimensional heat transfer analysis is carried out in the one-dimensional two-phase flow field.
When educational institutions worldwide scrambled for ways to continue their classes during lockdowns caused by the COVID-19 pandemic, the use of information and communication technology (ICT) for remote teaching has become widely considered to be a potential solution. As universities raced to implement emergency remote teaching (ERT) strategies in Japan, some have explored innovative interventions other than webinar platforms and learning management systems to bridge the gap caused by restricted mobility among teachers and learners. One such innovation is virtual reality (VR). VR has been changing the landscape of higher education because of its ability to "teleport" learners to various places by simulating real-world environments in the virtual world. Some teachers, including the authors of this paper, explored integrating VR into their activities to address issues caused by geographical limitations brought about by the heightened restrictions in 2020. Results were largely encouraging. However, rules started relaxing in the succeeding years as more people got vaccinated. Thus, some fully online classes in Japan shifted to blended learning as they moved toward fully returning to in-person classes prompting educators to modify how they implemented their VR-based interventions. This paper describes how a class of university students in Japan who were taking a Filipino language course experienced a VR-based intervention in blended mode, which was originally prototyped during the peak of the ERT era. Moreover, adjustments and comparisons regarding methodological idiosyncrasies and findings between the fully online iteration and the recently implemented blended one are reported in detail.
Abstract The reactions of 1-unsubstituted and 1-methyl-2-(o-methylthiophenyl)vinyl bromides in acetic acid in the presence of silver salt gave exclusively benzothiophenes, while the corresponding 2-methoxyphenyl analogues were unreactive under similar conditions. This cyclization is considered to involve an intramolecular nucleophilic attack of the sulfur atom at the carbon atom of the double bond activated by the silver ion with the elimination of the silver bromide.
In this research, we investigate the imaging properties of tansillumination laser CT system based on the coherent detection imaging (CDI) method, for early diagnosis of rheumatoid arthritis, from the viewpoints of morphological and quantitative imaging. First, to investigate the morphological imaging ability, the index finger PIP joint of a healthy volunteer was imaged with the laser CT, X-ray CT, and MRI. By comparison of these images, we present that the laser CT delineates the bone region with high spatial resolution of sub-millimeters. Next, to investigate the quantitative imaging, three kinds of the physical phantoms simulating bone, made from polyurethane including different concentrations of CaCO3, were imaged. We present that quantitative measurement is possible by demonstrating a satisfactory linear relationship between the averaged pixel value of the reconstructed images and the actual concentrations. These results demonstrate the feasibility of early diagnosis for rheumatoid arthritis.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNucleophilic addition of lanthanoid metal umpoled diaryl ketones to electrophilesZhaomin Hou, Kan Takamine, Osamu Aoki, Hiroyuki Shiraishi, Yuzo Fujiwara, and Hiroshi TaniguchiCite this: J. Org. Chem. 1988, 53, 26, 6077–6084Publication Date (Print):December 1, 1988Publication History Published online1 May 2002Published inissue 1 December 1988https://pubs.acs.org/doi/10.1021/jo00261a017https://doi.org/10.1021/jo00261a017research-articleACS PublicationsRequest reuse permissionsArticle Views1206Altmetric-Citations89LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
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