The Experts below are selected from a list of 2260839 Experts worldwide ranked by ideXlab platform
Ke Wang - One of the best experts on this subject based on the ideXlab platform.
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developments in calcium chemical looping and metal oxide redox cycles for high temperature thermochemical energy storage a review
Fuel Processing Technology, 2020Co-Authors: Yongliang Yan, Ke Wang, Peter T Clough, Edward J AnthonyAbstract:Abstract Energy storage is one of the most critical factors for maximising the availability of renewable energy systems while delivering firm capacity on an as- and when-required basis, thus improving the balance of grid energy. Chemical and calcium looping are two technologies, which are promising from both the point of view of minimising greenhouse gas emissions and because of their suitability for integrating with energy storage. A particularly promising route is to combine these technologies with solar heating, thus minimising the use of fossil fuels during the materials regeneration steps. For chemical looping, the development of mixed oxide carrier systems remains the highest Impact Research and development goal, and for calcium looping, minimising the decay in CO2 carrying capacity with natural sorbents appears to be the most economical option. In particular, sorbent stabilisers such as those based on Mg are particularly promising. In both cases, energy can be stored thermally as hot solids or chemically as unreacted materials, but there is a need to build suitable pilot plant demonstration units if the technology is to advance.
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Developments in calcium/chemical looping and metal oxide redox cycles for high-temperature thermochemical energy storage: A review
'Elsevier BV', 2019Co-Authors: Yan Yongliang, Ke Wang, Clough, Peter T., Anthony, Edward J.Abstract:Energy storage is one of the most critical factors for maximising the availability of renewable energy systems while delivering firm capacity on an as- and when-required basis, thus improving the balance of grid energy. Chemical and calcium looping are two technologies, which are promising from both the point of view of minimising greenhouse gas emissions and because of their suitability for integrating with energy storage. A particularly promising route is to combine these technologies with solar heating, thus minimising the use of fossil fuels during the materials regeneration steps. For chemical looping, the development of mixed oxide carrier systems remains the highest Impact Research and development goal, and for calcium looping, minimising the decay in CO2 carrying capacity with natural sorbents appears to be the most economical option. In particular, sorbent stabilisers such as those based on Mg are particularly promising. In both cases, energy can be stored thermally as hot solids or chemically as unreacted materials, but there is a need to build suitable pilot plant demonstration units if the technology is to advance
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an overview of climate change vulnerability a bibliometric analysis based on web of science database
Natural Hazards, 2014Co-Authors: Ke Wang, Bing Wang, Suyan Pan, Yiming WeiAbstract:Based on worldwide scholars' 3004 papers published in 658 academic journals in the Web of Science (WOS) database on the topic of climate change vulnerability from 1991 to 2012, this paper quantitatively analyzes the global scientific performance and hot Research areas in this field by adopting bibliometric method. The results show that (i) the vulnerability Researches on climate change have experienced a rapid growth since 2006 and the publications are widely distributed in a large number of source journals while the top two productive institutions are the University of East Anglia and Potsdam Institute for Climate Impact Research; (ii) the cooperation at author level is on the rise and there are closer relationships in institutional and national levels; (iii) the most widely focused Research topics in this field include health issues in the socioeconomic system, food security in the field of agricultural system and the issue of water resource management, etc.; (iv) according to the papers from the top journals, we find that the Research areas for climate change vulnerability in those publications are located in the ecological diversity, ecosystem service, water resource management and electric power supply, etc.
Edward J Anthony - One of the best experts on this subject based on the ideXlab platform.
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developments in calcium chemical looping and metal oxide redox cycles for high temperature thermochemical energy storage a review
Fuel Processing Technology, 2020Co-Authors: Yongliang Yan, Ke Wang, Peter T Clough, Edward J AnthonyAbstract:Abstract Energy storage is one of the most critical factors for maximising the availability of renewable energy systems while delivering firm capacity on an as- and when-required basis, thus improving the balance of grid energy. Chemical and calcium looping are two technologies, which are promising from both the point of view of minimising greenhouse gas emissions and because of their suitability for integrating with energy storage. A particularly promising route is to combine these technologies with solar heating, thus minimising the use of fossil fuels during the materials regeneration steps. For chemical looping, the development of mixed oxide carrier systems remains the highest Impact Research and development goal, and for calcium looping, minimising the decay in CO2 carrying capacity with natural sorbents appears to be the most economical option. In particular, sorbent stabilisers such as those based on Mg are particularly promising. In both cases, energy can be stored thermally as hot solids or chemically as unreacted materials, but there is a need to build suitable pilot plant demonstration units if the technology is to advance.
F. Schafer - One of the best experts on this subject based on the ideXlab platform.
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the memin Research unit scaling Impact cratering experiments in porous sandstones
Meteoritics & Planetary Science, 2013Co-Authors: Michael H Poelchau, T Kenkmann, Klaus Thoma, Tobias Hoerth, Anja Dufresne, F. SchaferAbstract:– The MEMIN Research unit (Multidisciplinary Experimental and Modeling Impact Research Network) is focused on analyzing experimental Impact craters and experimental cratering processes in geological materials. MEMIN is interested in understanding how porosity and pore space saturation influence the cratering process. Here, we present results of a series of Impact experiments into porous wet and dry sandstone targets. Steel, iron meteorite, and aluminum projectiles ranging in size from 2.5 to 12 mm were accelerated to velocities of 2.5–7.8 km s−1, yielding craters with diameters between 3.9 and 40 cm. Results show that the target’s porosity reduces crater volumes and cratering efficiency relative to nonporous rocks. Saturation of pore space with water to 50% and 90% increasingly counteracts the effects of porosity, leading to larger but flatter craters. Spallation becomes more dominant in larger-scale experiments and leads to an increase in cratering efficiency with increasing projectile size for constant Impact velocities. The volume of spalled material is estimated using parabolic fits to the crater morphology, yielding approximations of the transient crater volume. For Impacts at the same velocity these transient craters show a constant cratering efficiency that is not affected by projectile size.
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hypervelocity Impact Research acceleration technology and applications
Advances in Space Research, 2001Co-Authors: E. Schneider, F. SchaferAbstract:Modern acceleration techniques like two- and three stage light gas guns, electrostatic and plasma accelerators, shaped charge launchers etc. will be reviewed and discussed with respect to their projectile mass and velocity ranges and their applicability for the experimental simulation of hypervelocity collisions. Recent studies in the fields of micrometeoroid/debris shielding (e.g. COLUMBUS Orbital Facility), as well as pressure vessel behavior under hypervelocity Impact conditions will be presented as examples of applications.
Yongliang Yan - One of the best experts on this subject based on the ideXlab platform.
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developments in calcium chemical looping and metal oxide redox cycles for high temperature thermochemical energy storage a review
Fuel Processing Technology, 2020Co-Authors: Yongliang Yan, Ke Wang, Peter T Clough, Edward J AnthonyAbstract:Abstract Energy storage is one of the most critical factors for maximising the availability of renewable energy systems while delivering firm capacity on an as- and when-required basis, thus improving the balance of grid energy. Chemical and calcium looping are two technologies, which are promising from both the point of view of minimising greenhouse gas emissions and because of their suitability for integrating with energy storage. A particularly promising route is to combine these technologies with solar heating, thus minimising the use of fossil fuels during the materials regeneration steps. For chemical looping, the development of mixed oxide carrier systems remains the highest Impact Research and development goal, and for calcium looping, minimising the decay in CO2 carrying capacity with natural sorbents appears to be the most economical option. In particular, sorbent stabilisers such as those based on Mg are particularly promising. In both cases, energy can be stored thermally as hot solids or chemically as unreacted materials, but there is a need to build suitable pilot plant demonstration units if the technology is to advance.
Liz Fredline - One of the best experts on this subject based on the ideXlab platform.
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rethinking social Impacts of tourism Research a new Research agenda
Tourism Management, 2012Co-Authors: Margaret Deery, Leo Kenneth Jago, Liz FredlineAbstract:Understanding the social Impacts of tourism on communities is extremely important for government at all levels so that action can be taken to reduce the likelihood of a community backlash against tourists and tourism development. Given that the residents of many tourism destinations are a fundamental part of the tourism ‘product’, resident attitudes and behaviour have a sizable Impact on the success or otherwise of a destination. Research on the social Impacts of tourism on communities is substantial and ongoing and while advances have been made in the area, the Research has not addressed some of the deep seated issues faced by tourist destinations. This paper provides a critique of the social Impact of tourism literature, highlighting the inadequacies in the Research that has been conducted to date, which then leads to the development of a new conceptual framework. The paper traces the key developments in social Impact Research and argues that the predominance of quantitative methods potentially limits our ability to gain a more in-depth understanding of the Impacts and how they influence both the host community and tourists. The paper finds that the quantitative focus from previous social Impact Research has led to a narrow understanding of the issues surrounding social Impacts and proposes a new Research agenda based on ‘layers’ of social Impact understanding through the use of ethnography or phenomenology. The paper concludes with recommendations to progress social Impact Research beyond simply describing the issues towards explanations of why they occur by suggesting that social Impact Research examine, in greater depth, the values and intrinsic characteristics of the host residents.