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Articles 151 - 180 of 8088
Full-Text Articles in Engineering
Sharkeye: Real-Time Autonomous Personal Shark Alerting Via Aerial Surveillance, Robert A. Gorkin Iii, Kye Adams, Matthew J. Berryman, Sam Aubin, Wanqing Li, Andrew R. Davis, Johan Barthelemy
Sharkeye: Real-Time Autonomous Personal Shark Alerting Via Aerial Surveillance, Robert A. Gorkin Iii, Kye Adams, Matthew J. Berryman, Sam Aubin, Wanqing Li, Andrew R. Davis, Johan Barthelemy
SMART Infrastructure Facility - Papers
While aerial shark spotting has been a standard practice for beach safety for decades, new technologies offer enhanced opportunities, ranging from drones/unmanned aerial vehicles (UAVs) that provide new viewing capabilities, to new apps that provide beachgoers with up-to-date risk analysis before entering the water. This report describes the Sharkeye platform, a first-of-its-kind project to demonstrate personal shark alerting for beachgoers in the water and on land, leveraging innovative UAV image collection, cloud-hosted machine learning detection algorithms, and reporting via smart wearables. To execute, our team developed a novel detection algorithm trained via machine learning based on aerial footage of real …
A Game-Based Approach To Exploring Gender Differences In Smallholder Decisions To Change Farming Practices: White Rice Production In Laos, Silva Larson, Anne Giger-Dray, Tina Cornioley, Manithaythip Thephavanh, Phomma Thammavong, Sisavan Vorlasan, John Connell, Magnus Moglia, Peter Case, Kim Alexander, Pascal Perez
A Game-Based Approach To Exploring Gender Differences In Smallholder Decisions To Change Farming Practices: White Rice Production In Laos, Silva Larson, Anne Giger-Dray, Tina Cornioley, Manithaythip Thephavanh, Phomma Thammavong, Sisavan Vorlasan, John Connell, Magnus Moglia, Peter Case, Kim Alexander, Pascal Perez
SMART Infrastructure Facility - Papers
© 2020 by the authors. What influences farmers' decisions to adopt agricultural technologies is an important question for international agricultural research projects. There are often interpersonal differences between women and men that influence the adoption of decisions and behaviours, but few studies in the literature focus on these factors. We describe a game-based approach to explore decision-making processes underpinning the adoption of new farming technologies and practices in Lao People's Democratic Republic. Sowing a different rice variety is the tailored technology. The game explored adoption behaviours influencing decisions on transitioning from growing glutinous rice, a traditional variety preferred for consumption, …
Coupling N2 And Co2 In H2o To Synthesize Urea Under Ambient Conditions, Chen Chen, Xiaorong Zhu, Xiaojian Wen, Yangyang Zhou, Ling Zhou, Hao Li, Li Tao, Qiling Li, Shiqian Du, Tingting Liu, Dafeng Yan, Chao Xie, Yuqin Zou, Yanyong Wang, Ru Chen, Jia Huo, Yafei Liu, Jun Cheng, Hui Su, Xu Zhao, Weiren Cheng, Qinghua Liu, Hongzhen Lin, Jun Luo, Jun Chen, Mingdong Dong, Kai Cheng, Conggang Li, Shuangyin Wang
Coupling N2 And Co2 In H2o To Synthesize Urea Under Ambient Conditions, Chen Chen, Xiaorong Zhu, Xiaojian Wen, Yangyang Zhou, Ling Zhou, Hao Li, Li Tao, Qiling Li, Shiqian Du, Tingting Liu, Dafeng Yan, Chao Xie, Yuqin Zou, Yanyong Wang, Ru Chen, Jia Huo, Yafei Liu, Jun Cheng, Hui Su, Xu Zhao, Weiren Cheng, Qinghua Liu, Hongzhen Lin, Jun Luo, Jun Chen, Mingdong Dong, Kai Cheng, Conggang Li, Shuangyin Wang
Australian Institute for Innovative Materials - Papers
© 2020, The Author(s), under exclusive licence to Springer Nature Limited. The use of nitrogen fertilizers has been estimated to have supported 27% of the world’s population over the past century. Urea (CO(NH2)2) is conventionally synthesized through two consecutive industrial processes, N2 + H2 → NH3 followed by NH3 + CO2 → urea. Both reactions operate under harsh conditions and consume more than 2% of the world’s energy. Urea synthesis consumes approximately 80% of the NH3 produced globally. Here we directly coupled N2 and CO2 in H2O to produce urea under ambient conditions. The process was carried out using an …
Ac Loss And Contact Resistance Of Different Cicc Cable Patterns: Experiments And Numerical Modeling, Anvar Valiyaparambil Abdulsalam, J Qin, Y Wu, T Bagni, A Devred, T Haugan, Md. Shahriar Al Hossain, C Zhou, Arend Nijhuis
Ac Loss And Contact Resistance Of Different Cicc Cable Patterns: Experiments And Numerical Modeling, Anvar Valiyaparambil Abdulsalam, J Qin, Y Wu, T Bagni, A Devred, T Haugan, Md. Shahriar Al Hossain, C Zhou, Arend Nijhuis
Australian Institute for Innovative Materials - Papers
© 2020 The Author(s) For upcoming nuclear fusion energy reactors, like the China Fusion Engineering Test Reactor (CFETR) and EU-DEMO, the superconducting Cable-In-Conduit Conductors (CICC) are in the design phase, and the operating conditions like electromagnetic forces can be higher than in previous devices like ITER. The prototype conductors for the Central Solenoid (CS) coils in the CFETR, for example, are designed to produce a peak field of 19.9 T and are expected to be made of high current density Nb3Sn strands. Investigations are also ongoing on the application of bismuth strontium calcium copper oxide (BSCCO) and MgB2 strands for …
Highly Efficient Co3o4/Co@Ncs Bifunctional Oxygen Electrocatalysts For Long Life Rechargeable Zn-Air Batteries, Neng Yu, Chang Wu, Wen Huang, You Chen, Da Ruan, Kai Bao, Hui Chen, Yi Zhang, Yusong Zhu, Qing Huang, Weihong Lai, Yunxiao Wang, Hong Liao, Shi Sun, Yu Wu, Jiazhao Wang
Highly Efficient Co3o4/Co@Ncs Bifunctional Oxygen Electrocatalysts For Long Life Rechargeable Zn-Air Batteries, Neng Yu, Chang Wu, Wen Huang, You Chen, Da Ruan, Kai Bao, Hui Chen, Yi Zhang, Yusong Zhu, Qing Huang, Weihong Lai, Yunxiao Wang, Hong Liao, Shi Sun, Yu Wu, Jiazhao Wang
Australian Institute for Innovative Materials - Papers
© 2020 Elsevier Ltd Rational design and synthesis of high-performance bifunctional oxygen electrocatalysts are in high demand for metal air batteries. Herein, Co3O4/Co nano-heterojunctions tailored in nitrogen-doped porous graphitized carbon frameworks (Co3O4/Co@NCs) are synthesized via annealing Co-based metal-organic-frameworks (Co-based MOFs). This structure for electrocatalysts with a combination of mixed metallic Co species and encapsulating porous graphitized carbon offers an efficient charge/mass transport environment. In addition, the Co3O4/Co nano-heterostructured interfaces serve as efficient reactive sites to enhance oxygen electrocatalysis. Furthermore, the strong binding forces between nanoparticles and carbon frameworks through Co–N covalent bonds prevent the loss of nanoparticles from the electrocatalysts, …
Novel Integrated Strategies Toward Efficient And Stable Unassisted Photoelectrochemical Water Splitting, Liqun Wang, Wenping Si, Xinggang Hou, Mingxia Wang, Xiaoli Liu, Yuhang Ye, Feng Hou, Ji Liang
Novel Integrated Strategies Toward Efficient And Stable Unassisted Photoelectrochemical Water Splitting, Liqun Wang, Wenping Si, Xinggang Hou, Mingxia Wang, Xiaoli Liu, Yuhang Ye, Feng Hou, Ji Liang
Australian Institute for Innovative Materials - Papers
© 2020 Unassisted photoelectrochemical (PEC) water splitting for hydrogen evolution has been regarded as a sustainable route for the harvest and utilization of solar energy. To achieve such unassisted PEC water splitting, two novel integrated strategies have been developed: to design tandem structures of photoanodes/photocathodes and to construct hybrid devices of solar/PEC cells. Some key unsolved problems, however, still limit the further development of high-performance unassisted PEC water splitting, such as low efficiency, poor stability, and high cost. Herein, we present a brief summary of the latest development in this area and propose perspectives for further enhancing this state-of-the-art solar-to‑hydrogen …
Tuning Interface Bridging Between Mose2 And Three-Dimensional Carbon Framework By Incorporation Of Moc Intermediate To Boost Lithium Storage Capability, Jing Chen, Yilin Luo, Wenchao Zhang, Yun Qiao, Xinxin Cao, Xuefang Xie, Haoshen Zhou, Anqiang Pan, Shuquan Liang
Tuning Interface Bridging Between Mose2 And Three-Dimensional Carbon Framework By Incorporation Of Moc Intermediate To Boost Lithium Storage Capability, Jing Chen, Yilin Luo, Wenchao Zhang, Yun Qiao, Xinxin Cao, Xuefang Xie, Haoshen Zhou, Anqiang Pan, Shuquan Liang
Australian Institute for Innovative Materials - Papers
© 2020, The Author(s). Highlights: MoSe2/MoC/C multiphase boundaries boost ionic transfer kinetics.MoSe2 (5–10 nm) with rich edge sites is uniformly coated in N-doped framework.The obtained MoSe2 nanodots achieved ultralong cycle performance in LIBs and high capacity retention in full cell. Abstract: Interface engineering has been widely explored to improve the electrochemical performances of composite electrodes, which governs the interface charge transfer, electron transportation, and structural stability. Herein, MoC is incorporated into MoSe2/C composite as an intermediate phase to alter the bridging between MoSe2- and nitrogen-doped three-dimensional (3D) carbon framework as MoSe2/MoC/N–C connection, which greatly improve the structural stability, electronic conductivity, …
Controllable S-Vacancies Of Monolayered Mo–S Nanocrystals For Highly Harvesting Lithium Storage, Linlin Fan, Shulai Lei, Hirbod Kheimeh, Longsheng Zhong, Alibek Kakimov, Jingjing Wang, Jun Chen, Dezheng Liu, Liang Huang, Junhua Hu, Liangxu Lin, Xifei Li
Controllable S-Vacancies Of Monolayered Mo–S Nanocrystals For Highly Harvesting Lithium Storage, Linlin Fan, Shulai Lei, Hirbod Kheimeh, Longsheng Zhong, Alibek Kakimov, Jingjing Wang, Jun Chen, Dezheng Liu, Liang Huang, Junhua Hu, Liangxu Lin, Xifei Li
Australian Institute for Innovative Materials - Papers
© 2020 Elsevier Ltd Two-dimensional (2D) monolayers are promising in electrochemical energy storages (EES), while their performance is still far below than that can be exploited. Understanding 2D monolayers, particularly thin nanocrystals (NCs) with and without surface modifications in EES would be interesting. This work demonstrates how monolayered molybdenum sulfide (Mo–S) NCs with S vacancies perform as a promising anode material to improve many aspects of lithium-ion batteries (LIBs), by utilizing their metallicity, multi-layer adsorption, minimized self-discharge and fast 2D capacitive processes. By way of examples, we demonstrate an increasing trend of the energy capacity and improved lithium diffusion kinetics …
Ultrafast Electron Transport In Metallic Antiferromagnetic Mn2au Thin Films Probed By Terahertz Spectroscopy, Zuanming Jin, Shunyi Ruan, Xiaofeng Zhou, Bangju Song, Cheng Song, Xianzhe Chen, Feng Pan, Yan Peng, C Zhang, Guohong Ma, Yiming Zhu, Songlin Zhuang
Ultrafast Electron Transport In Metallic Antiferromagnetic Mn2au Thin Films Probed By Terahertz Spectroscopy, Zuanming Jin, Shunyi Ruan, Xiaofeng Zhou, Bangju Song, Cheng Song, Xianzhe Chen, Feng Pan, Yan Peng, C Zhang, Guohong Ma, Yiming Zhu, Songlin Zhuang
Australian Institute for Innovative Materials - Papers
The ultrafast electron transport is central to the requirement of all-electrically controlled spintronics in metallic collinear antiferromagnetic (AFM) Mn2Au thin films within the terahertz (THz) range. Here we use the THz time-domain spectroscopy to measure the conductivity spectra of Mn2Au thin films with different thicknesses and temperatures. We demonstrate an onset of carrier localization in Mn2Au with decreasing the film thickness from 15 to 5 nm. By using optical pump-THz probe spectroscopy, we found the surface trapping states in the thinnest Mn2Au film limit its photoconductivity significantly. The DC conductivity and scattering time become larger and longer with decreasing temperature …
Improved Na Storage And Coulombic Efficiency In Tip2o7@C Microflowers For Sodium Ion Batteries, Jun Pan, Nana Wang, Lili Li, Feng Zhang, Zhenjie Cheng, Yanlu Li, Jian Yang, Yitai Qian
Improved Na Storage And Coulombic Efficiency In Tip2o7@C Microflowers For Sodium Ion Batteries, Jun Pan, Nana Wang, Lili Li, Feng Zhang, Zhenjie Cheng, Yanlu Li, Jian Yang, Yitai Qian
Australian Institute for Innovative Materials - Papers
© 2020, Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature. Ti-based anode materials in sodium ion batteries have attracted extensive interests due to its abundant resources, low toxicity, easy synthesis and long cycle life. However, low Coulombic efficiency and limited specific capacity affect their applications. Here, cubic-phase TiP2O7 is examined as anode materials, using in-situ/ex-situ characterization techniques. It is concluded that the redox reactions of Ti4+/Ti3+ and Ti3+/Ti0 consecutively occur during the discharge/charge processes, both of which are highly reversible. These reactions make the specific capacity of TiP2O7 even higher than the case of TiO2 that only …
Tunable Magnetic Anisotropy And Dzyaloshinskii-Moriya Interaction In An Ultrathin Van Der Waals Fe3gete2/In2se3 Heterostructure, Dong Chen, Wei Sun, Hang Li, Jian Li Wang, Yuanxu Wang
Tunable Magnetic Anisotropy And Dzyaloshinskii-Moriya Interaction In An Ultrathin Van Der Waals Fe3gete2/In2se3 Heterostructure, Dong Chen, Wei Sun, Hang Li, Jian Li Wang, Yuanxu Wang
Australian Institute for Innovative Materials - Papers
© Copyright © 2020 Chen, Sun, Li, Wang and Wang. The promise of future spintronic devices with nanoscale dimension, high-density, and low-energy consumption motivates the search for van der Waals heterostructure that stabilize topologically protected whirling spin textures such as magnetic skyrmions and domain walls. To translate these compelling features into practical devices, a key challenge lies in achieving effective manipulation of the magnetic anisotropy energy and the Dzyaloshinskii-Moriya (DM) interaction, the two key parameters that determine skyrmions. Through the first-principles calculation, we demonstrate that the polarization-induced broken inversion symmetry in the two-dimensional Fe3GeTe2/In2Se3 multiferroic heterostructure does cause an interfacial …
Low-Cost Efficient Magnetic Adsorbent For Phosphorus Removal From Water, Liting Zhang, Hongbing Dan, Orphe Bukasa, Linlin Song, Yin Liu, Liang Wang, Jianjun Li
Low-Cost Efficient Magnetic Adsorbent For Phosphorus Removal From Water, Liting Zhang, Hongbing Dan, Orphe Bukasa, Linlin Song, Yin Liu, Liang Wang, Jianjun Li
Australian Institute for Innovative Materials - Papers
Adsorption using magnetic adsorbents makes the phosphorus removal from water simple and efficient. However, most of the reported magnetic adsorbents use chemically synthesized nanoparticles as magnetic cores, which are expensive and environmentally unfriendly. Replacing the nanomagnetic cores by cheap and green magnetic materials is essential for the wide application of this technique. In this paper, coal-fly-ash magnetic spheres (MSs) were processed to produce a cheap and eco-friendly magnetic core. A magnetic adsorbent, ZrO2 coated ball-milled MS (BMS@ZrO2), was prepared through a simple chemical precipitation method. Careful structural investigations indicate that a multipore structural amorphous ZrO2 layer has grown on the …
Simple Preparation Of Nitrogen-Doped Tio2 And Its Performance In Selective Oxidation Of Benzyl Alcohol And Benzylamine Under Visible Light, Mattawan Japa, Doldet Tantraviwat, Witchaya Phasayavan, Andrew Nattestad, Jun Chen, Burapat Inceesungvorn
Simple Preparation Of Nitrogen-Doped Tio2 And Its Performance In Selective Oxidation Of Benzyl Alcohol And Benzylamine Under Visible Light, Mattawan Japa, Doldet Tantraviwat, Witchaya Phasayavan, Andrew Nattestad, Jun Chen, Burapat Inceesungvorn
Australian Institute for Innovative Materials - Papers
N-doped TiO2, denoted as T_400, was prepared simply by the facile thermal hydrolysis of TiOSO4 using NH4OH as both a precipitating agent and a nitrogen source. Compared to TiO2 without nitrogen doping, T_400 provides superior photocatalytic activity toward the selective oxidation of benzyl alcohol and benzylamine under visible light irradiation, with > 85 % conversion and > 95 % selectivity to benzaldehyde and N-benzylidenebenzylamine products, respectively. The increased photoactivity of T_400 is ascribed to enhanced visible-light absorption and efficient photogenerated charge transfer and separation as supported by UV–vis DRS, photoelectrochemical and VB-XPS results. The catalyst can …
Creating Thin Magnetic Layers At The Surface Of Sb2te3 Topological Insulators Using A Low-Energy Chromium Ion Beam, David L. Cortie, Weiyao Zhao, Zengji Yue, Zhi Li, Abuduliken Bake, Olexandra Marenych, Zeljko Pastuovic, Mitchell John Bromley Nancarrow, Zhaoming Zhang, Dong-Chen Qi, Peter Evans, D Rg Mitchell, Xiaolin Wang
Creating Thin Magnetic Layers At The Surface Of Sb2te3 Topological Insulators Using A Low-Energy Chromium Ion Beam, David L. Cortie, Weiyao Zhao, Zengji Yue, Zhi Li, Abuduliken Bake, Olexandra Marenych, Zeljko Pastuovic, Mitchell John Bromley Nancarrow, Zhaoming Zhang, Dong-Chen Qi, Peter Evans, D Rg Mitchell, Xiaolin Wang
Australian Institute for Innovative Materials - Papers
The surfaces of Sb2Te3 topological insulator crystals were implanted using a 40 keV chromium ion beam. To facilitate uniform doping, the Sb2Te3 was passivated with a thin TiO2 film before the implantation step. The resulting chemical structure was studied using atomic-resolution transmission electron microscopy. A fluence of 7 × 1015 ions/cm2 at 40 keV lead to amorphization of the Sb2Te3 surface, with chromium predominantly incorporated in the amorphous layer. Heating to 200 °C caused the amorphous region to recrystallize and led to the formation of a thin chromium-rich …
Choosing Subfields For Luov And Lifting Fields For Rainbow, Dung Hoang Duong, Le Van Luyen, Ha Tran
Choosing Subfields For Luov And Lifting Fields For Rainbow, Dung Hoang Duong, Le Van Luyen, Ha Tran
Faculty of Engineering and Information Sciences - Papers: Part B
© The Institution of Engineering and Technology 2019 Multivariate public key cryptography is one of the main candidates for post-quantum cryptography. Rainbow, an improved (multi-layer) version of unbalanced oil and vinegar (UOV), is one of the most famous multivariate signature schemes that is a promising candidate for NIST standardisation. At INDOCRYPT 2017, Beullens and Preneel introduced a new variant LUOV of UOV. Their idea is to generate a UOV scheme over the binary field L = F2 and then lift it into a bigger field K = F2r and hence dramatically reduce the public key size. In this study, the …
Susceptibility Artifact Correction For Sub-Millimeter Fmri Using Inverse Phase Encoding Registration And T1 Weighted Regularization, Soan Duong, Son Lam Phung, Abdesselam Bouzerdoum, Harriet Boyd Taylor, A Puckett, Mark M. Schira
Susceptibility Artifact Correction For Sub-Millimeter Fmri Using Inverse Phase Encoding Registration And T1 Weighted Regularization, Soan Duong, Son Lam Phung, Abdesselam Bouzerdoum, Harriet Boyd Taylor, A Puckett, Mark M. Schira
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier B.V. Background: Functional magnetic resonance imaging (fMRI) enables non-invasive examination of both the structure and the function of the human brain. The prevalence of high spatial-resolution (sub-millimeter) fMRI has triggered new research on the intra-cortex, such as cortical columns and cortical layers. At present, echo-planar imaging (EPI) is used exclusively to acquire fMRI data; however, susceptibility artifacts are unavoidable. These distortions are especially severe in high spatial-resolution images and can lead to misrepresentation of brain function in fMRI experiments. New method: This paper presents a new method for correcting susceptibility artifacts by combining a T1-weighted (T1w) image …
Wearable Electronic Textiles From Nanostructured Piezoelectric Fibers, Fatemeh Mokhtari, Geoffrey M. Spinks, Cormac Fay, Zhenxiang Cheng, Raad Raad, Jiangtao Xi, Javad Foroughi
Wearable Electronic Textiles From Nanostructured Piezoelectric Fibers, Fatemeh Mokhtari, Geoffrey M. Spinks, Cormac Fay, Zhenxiang Cheng, Raad Raad, Jiangtao Xi, Javad Foroughi
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Wearable energy harvesting is of practical interest for many years and for diverse applications, including development of self-powered wireless sensors within garments for human health monitoring. Herein, a novel approach is reported to create wearable energy generators and sensors using nanostructured hybrid piezoelectric fibers and exploiting the enormous variety of textile architectures. It is found that high performance hybrid piezofiber is obtained using a barium titanate (BT) nanoparticle and poly(vinylidene fluoride) (PVDF) with a mass ratio of 1:10. These fibers are knitted to form a wearable energy generator that produced a …
State Of The Art Of Solid-State Transformers: Advanced Topologies, Implementation Issues, Recent Progress And Improvements, Mahammad Hannan, Pin Ker, Molla Lipu, Zhen Choi, M Rahman, Kashem M. Muttaqi, Frede Blaabjerg
State Of The Art Of Solid-State Transformers: Advanced Topologies, Implementation Issues, Recent Progress And Improvements, Mahammad Hannan, Pin Ker, Molla Lipu, Zhen Choi, M Rahman, Kashem M. Muttaqi, Frede Blaabjerg
Faculty of Engineering and Information Sciences - Papers: Part B
© 2013 IEEE. Solid-state transformer (SST) is an emerging technology integrating with a transformer power electronics converters and control circuitry. This paper comprehensively reviews the SST topologies suitable for different voltage levels and with varied stages, their control operation, and different trends in applications. The paper discusses various SST configurations with their design and characteristics to convert the input to output under unipolar and bipolar operation. A comparison between the topologies, control operation and applications are included. Different control models and schemes are explained. Potential benefits of SST in many applications in terms of controllability and the synergy of AC …
The Energy Transformation Of Internal Erosion Based On Fluid-Particle Coupling, Thanh Trung Nguyen, Buddhima Indraratna
The Energy Transformation Of Internal Erosion Based On Fluid-Particle Coupling, Thanh Trung Nguyen, Buddhima Indraratna
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier Ltd The transformation of energy is an intrinsic process that is needed to trigger the internal erosion of soils subjected to a fluid flow, but how to capture this process is not understood very well. This is why this study aims to address these complex processes through a numerical fluid-particle coupling simulation. The computational fluid dynamics (CFD) is used to model fluid flows which is coupled with the discrete element method (DEM) employed to simulate soil particles. Detailed migration of particles and fluid variables are recorded to enable their kinetic energy to be computed. Successful experiments are …
Full-Scale Investigation Of Ferrous Dosing In Sewers And A Wastewater Treatment Plant For Multiple Benefits, Jagadeeshkumar Kulandaivelu, Sohan Shrestha, Wakib Khan, Jason Dwyer, Alan Steward, Leo Bell, Paul Mcphee, Peter Smith, Shihu Hu, Zhiguo Yuan, Guangming Jiang
Full-Scale Investigation Of Ferrous Dosing In Sewers And A Wastewater Treatment Plant For Multiple Benefits, Jagadeeshkumar Kulandaivelu, Sohan Shrestha, Wakib Khan, Jason Dwyer, Alan Steward, Leo Bell, Paul Mcphee, Peter Smith, Shihu Hu, Zhiguo Yuan, Guangming Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier Ltd This study demonstrates the full scale application of iron dosing in a metropolitan wastewater treatment plant (WWTP) and the upstream sewer system for multiple benefits. Two different dosing locations, i.e., the WWTP inlet works (Trial-1) and upstream sewer network (Trial-2) were tested in this study. Both dosing trials achieved multiple benefits such as sulfide control, phosphate removal and improved sludge dewaterability. During Trial-1, a sulfide reduction of >90% was achieved at high dosing rates (>19 kgFe ML−1) of ferrous chloride in the inlet works and in Trial-2 the in-sewer ferrous dosing had significant gas phase …
Estimation Of Average Ejection Velocity Generated By Rib Burst Under Compression Load, Xiaohan Yang, Ting X. Ren, Lihai Tan
Estimation Of Average Ejection Velocity Generated By Rib Burst Under Compression Load, Xiaohan Yang, Ting X. Ren, Lihai Tan
Faculty of Engineering and Information Sciences - Papers: Part B
The ejection velocity associated with coal burst is an important parameter for support and protection structure design against coal ejection, as the support or protection design rationale is to dissipate or absorb the kinetic energy carried by ejected coal. This paper provides a novel method to estimate the average particle ejection velocity of rib burst based on the energy dissipation and coal fragmentation of coal brittle failure. This research shows that the scale of kinetic energy released by coal burst in underground roadways can reach over 107 J, which can offer ejected coal with an over 26 m/s initial velocity …
A Conductive Polymer Derived N-Doped Carbon Nanofiber Supported Li2s Coating Layer For Li–S Batteries With High Mass Loading, Fang Li, Chang Wu, Jicheng Jiang, Hua-Kun Liu, Jiazhao Wang
A Conductive Polymer Derived N-Doped Carbon Nanofiber Supported Li2s Coating Layer For Li–S Batteries With High Mass Loading, Fang Li, Chang Wu, Jicheng Jiang, Hua-Kun Liu, Jiazhao Wang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier B.V. The commercialization of Li2S as a potential candidate for lithium-sulfur cathode material is hampered due to its low electronic conductivity, the “shuttle effect” and the initial energy barrier. In this work, nanosized Li2S particles coated carbon nanofibers are prepared via a solution-based chemical method. Benefiting from this synthetic method, a uniform Li2S layer can be obtained without any agglomeration. Due to the small size of Li2S particles, a smaller energy barrier is observed in the first charging process, which means it is easier to activate the Li2S with a smaller cut-off voltage. In addition, the carbon …
Martensitic Wear Resistant Steels Alloyed With Titanium, Andrii Kostryzhev, C Killmore, D Yu, Elena V. Pereloma
Martensitic Wear Resistant Steels Alloyed With Titanium, Andrii Kostryzhev, C Killmore, D Yu, Elena V. Pereloma
Faculty of Engineering and Information Sciences - Papers: Part B
No abstract provided.
Reduction Kinetics Of Oxidized New Zealand Ironsand Pellets In H2 At Temperatures Up To 1443 K, Ao Zhang, Brian J. Monaghan, Raymond Longbottom, Mohammad Nusheh, Chris Bumby
Reduction Kinetics Of Oxidized New Zealand Ironsand Pellets In H2 At Temperatures Up To 1443 K, Ao Zhang, Brian J. Monaghan, Raymond Longbottom, Mohammad Nusheh, Chris Bumby
Faculty of Engineering and Information Sciences - Papers: Part B
2020, The Minerals, Metals & Materials Society and ASM International. Direct reduction of iron ore pellets using hydrogen gas has the potential to significantly reduce CO2 emissions from the ironmaking process. In this work, green pellets of titanomagnetite ironsand from New Zealand were oxidatively sintered to form titanohematite. These sintered pellets were then reduced by H2 gas at temperatures ≥ 1043 K, and a maximum reduction degree of ~ 97 pct was achieved. Fully reduced pellets contained metallic Fe as the main product phase, but several different (Fe, Ti) oxides were also present as minor inclusions. The phase distribution of …
Transient Nonlinear Heat Transfer Analysis Using A Generic Grid Refinement For Structure Parameter Variations, S Feng, Y Tao, Zhenjun Ma, Grzegorz Krolczyk, Zhixiong Li
Transient Nonlinear Heat Transfer Analysis Using A Generic Grid Refinement For Structure Parameter Variations, S Feng, Y Tao, Zhenjun Ma, Grzegorz Krolczyk, Zhixiong Li
Faculty of Engineering and Information Sciences - Papers: Part B
2020 The Authors Traditional finite element models are usually established based on specific structures to address the transient nonlinear heat transfer analysis; however, if the structure parameters change one has to reanalyze/rebuild the finite element models, resulting in a lot of additional computational cost. To address this problem, this work develops a generic grid refinement approach to improve the computational efficiency of nonlinear heat transfer analysis. The advantage of the proposed method lies that the grids can be used to establish connections between original and modified structures through transfer operators, which is calculated only once for the original structures and …
Thermodynamic Analysis Of A Solar-Driven High-Temperature Steam Electrolyzer For Clean Hydrogen Production, Wei He, Mohammad Namar, Zhixiong Li, Akbar Maleki, Iskander Tlili, Mostafa Safdari
Thermodynamic Analysis Of A Solar-Driven High-Temperature Steam Electrolyzer For Clean Hydrogen Production, Wei He, Mohammad Namar, Zhixiong Li, Akbar Maleki, Iskander Tlili, Mostafa Safdari
Faculty of Engineering and Information Sciences - Papers: Part B
2020 Elsevier Ltd Increasing world population and consequent increase in fossil fuels consumption emerge the necessity of looking for new sources of energy; resources that are clean, cheap, and renewable. Hydrogen is known as a clean and renewable fuel in various approaches; so, finding clean ways of hydrogen production can be considered as an appropriate solution for climate changes and global warming. In this study, a conceptual design of solar-driven high-temperature steam electrolyzer system is presented, and its performance is investigated thermodynamically using a real-time simulator in-house code. Evaluation of the effects of inlet parameters on the system performance is …
Thermo-Economic Selection Criteria Of Working Fluid Used In Dual-Loop Orc For Engine Waste Heat Recovery By Multi-Objective Optimization, Zhiqi Wang, Yanhua Hu, Xiaoxia Xia, Qingsong Zuo, Bin Zhao, Zhixiong Li
Thermo-Economic Selection Criteria Of Working Fluid Used In Dual-Loop Orc For Engine Waste Heat Recovery By Multi-Objective Optimization, Zhiqi Wang, Yanhua Hu, Xiaoxia Xia, Qingsong Zuo, Bin Zhao, Zhixiong Li
Faculty of Engineering and Information Sciences - Papers: Part B
2020 Elsevier Ltd The dual-loop organic Rankine cycle(DORC) is considered as an important way for engine waste heat recovery (WHR). Currently, researchers mainly focus on thermodynamic analysis and the performance comparison of multiple existing working fluid pairs without optimizing the working fluid pairs. Therefore, a novel analysis method of selection criteria based on thermodynamic and economic is provided to select a suitable working fluid using the multi-objective optimization. Firstly, a multi-objective optimization was performed using the Non-dominated sorting genetic algorithm-Ⅱ(NSGA-Ⅱ) to maximize exergy efficiency and minimize payback period under 24 candidate working fluid pairs from the references. And the Technical …
Flow Field Perception Of A Moving Carrier Based On An Artificial Lateral Line System, Guijie Liu, Huanhuan Hao, Tingting Yang, Shuikuan Liu, Mengmeng Wang, Atilla Incecik, Zhixiong Li
Flow Field Perception Of A Moving Carrier Based On An Artificial Lateral Line System, Guijie Liu, Huanhuan Hao, Tingting Yang, Shuikuan Liu, Mengmeng Wang, Atilla Incecik, Zhixiong Li
Faculty of Engineering and Information Sciences - Papers: Part B
2020 by the authors. Licensee MDPI, Basel, Switzerland. At present, autonomous underwater vehicles (AUVs) cannot perceive local environments in complex marine environments, where fish can obtain hydrodynamic information about the surrounding environment through a lateral line. Inspired by this biological function, an artificial lateral line system (ALLS) was built on a moving bionic carrier using the pressure sensor in this paper. When the carrier operated with different speeds in the flow field, the pressure distribution characteristics surrounding the carrier were analyzed by numerical simulation, where the effect of the flow angle between the fluid velocity direction and the carrier navigation …
Numerical Simulation Of Strip Shape Of High-Strength Steel During Hot Rolling Process, Lianjie Li, Haibo Xie, Xu Liu, Tianwu Liu, Enrui Wang, Zhengyi Jiang
Numerical Simulation Of Strip Shape Of High-Strength Steel During Hot Rolling Process, Lianjie Li, Haibo Xie, Xu Liu, Tianwu Liu, Enrui Wang, Zhengyi Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
2020 Trans Tech Publications Ltd, Switzerland. High-strength steel is widely applied due to its excellent mechanical properties. However, its high strength in turn brings great difficulties to production and processing such as hot strip rolling owing to the high rolling force, which results in large elastic deformation of roll stack and poses a huge challenge to the control of strip crown and flatness. In this paper, A threedimensional (3D) elastic-plastic coupled thermo-mechanical finite element (FE) model for hot strip rolling of high-strength steel is developed and then verified experimentally. This model not only calculates the elastic deformation of rolls and …
Ultrathin Few-Layer Gep Nanosheets Via Lithiation-Assisted Chemical Exfoliation And Their Application In Sodium Storage, Fuhua Yang, Jian Hong, Junnan Hao, Shilin Zhang, Gemeng Liang, Jun Long, Yuqing Liu, Nana Liu, Wei Kong Pang, Jun Chen, Zaiping Guo
Ultrathin Few-Layer Gep Nanosheets Via Lithiation-Assisted Chemical Exfoliation And Their Application In Sodium Storage, Fuhua Yang, Jian Hong, Junnan Hao, Shilin Zhang, Gemeng Liang, Jun Long, Yuqing Liu, Nana Liu, Wei Kong Pang, Jun Chen, Zaiping Guo
Faculty of Engineering and Information Sciences - Papers: Part B
2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Ultrathin few-layer materials have attracted intensive research attention because of their distinctive and unique properties. Few-layer GeP (FL-GP) is potentially interesting for application in electronics and optoelectronics because of its appropriate band gap and good stability under ambient conditions. Nevertheless, it is a challenge to achieve ultrathin few-layer or single layer GeP from exfoliation of bulk crystals. Here, a lithiation-assisted chemical exfoliation technique is employed to achieve FL-GP, in which the interlayer spacing can be efficiently enlarged after a preliminary lithium ion intercalation, allowing the bulk crystal to be readily exfoliated in …