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- Shen, Jingchun, et al.
(författare)
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A Critical Review of Lighting Design and Asset Management Strategies. Illuminating Practices and Lessons Learned for Swedish Public Libraries
- 2023
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Ingår i: Journal of Physics, Conference Series. - : Institute of Physics (IOP). - 1742-6588 .- 1742-6596. ; 2654:1
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Konferensbidrag (refereegranskat)abstract
- Most lighting is only designed to meet the visual needs in most public library environments in Sweden. Although lighting-related impacts are relevant to six Unite Nations sustainability goals, some important lighting considerations, such as circadian phase disruption, mode and productivity impact, and energy-efficient operation, are missing in current lighting operating practices. Moreover, most of the current lighting asset management practice in public buildings remains "fix it if only it breaks". With respect to people-centric health factors, visual index, and lighting asset energy-efficient operation, this study sublimates lighting into a new perspective. Finally, the suggested comprehensive lighting operating strategies integrating digital twins can help designers and operators in defining the optimal design/control strategy in public-built environments, like public library. Digital twin-based decision-making is expected to be applied to lighting design and control in public spaces that improves visual acuity and comfort, positively impact mood and productivity, and provides recommendations on engagement principles under Environment Social Governance (ESG) framework to asset manager/operators.
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| 2. |
- Gao, Xu, et al.
(författare)
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Thermal History Effects on Decomposition Behavior and Pyrolysis Mechanism of Cellulose Nitrate
- 2023
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Konferensbidrag (refereegranskat)abstract
- Nitrocellulose is an important kind of energetic material produced by replacing hydroxyl of cellulose molecule to nitro, which has a wide application range in social life. During transportation and storage, inevitably the quality of the nitrocellulose will be affected due to external ambient heating. In this study, two kinds of NC samples, original and heated ones, were used as research objects and taken into DSC experiments under several constant heating rates to explore thermal history effects on its decomposition and combustion behavior. A series of calculation methods based on model fitting were main ways for research, so were model free methods. Numerical results by model fitting method showed that decomposition reaction of NC follows n-th reaction model. The comparison between experimental results of two kinds of samples claimed that thermal history had positive influence on heat flow, and increased the reaction order of decomposition process, and decreased the characteristic temperatures. So the thermal history made the decomposition reaction more difficult to take place and more stable. This study is obviously meaningful for the research of thermal pyrolysis process of NC after thermal history.
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| 5. |
- Kadhum, Safaa A., et al.
(författare)
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Microplastic Contamination of Surface Sediment of Euphrates River, Iraq : A Preliminary Study
- 2020
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Ingår i: Journal of Physics: Conference Series. - : Institute of Physics (IOP). - 1742-6588.
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Konferensbidrag (refereegranskat)abstract
- Microplastics pollutants in sediment have been notified in freshwater and estuaries from different countries. However, microplastics abundance, distribution, and polymer types in surface sediment from Euphrates River were reported for the first time. Microplastics were found in all sediment sites along the river, and abundance ranging from 29.6 to 120.0 particles/kg dry, with an average 86.7 particles/kg dry. Fiber particles were the most predominant form (57.1%), followed by films (29.6.2%) and fragments (13.1%). The polymers identified using Fourier Transform Infrared Spectroscopy (FTIR) which was dominantly polyethylene (44.1%), polyethylene terephthalate (35.0%) and nylon (20.2%). It is clear that the microplastics levels in sediment from Euphrates river were polluted and these data will be useful for manage and rehabilitation the Iraqi rivers to reduce possible microplastics pollution.
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