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Articles 901 - 930 of 14367

Full-Text Articles in Social and Behavioral Sciences

Evolution Of Diamond Based Microdosimetry, Jeremy A. Davis, Marco Petasecca, Susanna Guatelli, Michael L. F Lerch, Anatoly B. Rosenfeld Jan 2019

Evolution Of Diamond Based Microdosimetry, Jeremy A. Davis, Marco Petasecca, Susanna Guatelli, Michael L. F Lerch, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part B

The requirements for solid state micro- dosimetry particularly within the context of medical and space environments necessitate a tissue equivalent and radiation hard material, for which diamond is uniquely suited. An overview of the current status of diamond based microdosimetry is given. This overview will explore previous and current technologies developed by the Centre for Medical Radiation Physics (CMRP). The overview will analyse technologies in terms of their advantages and disadvantages within the context of microdosimetry. Using this as a basis, recommendations with respect to fabri- cation methodologies/techniques are provided in order to direct the course and progress of development …

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Preliminary Epi-Diode Characterization For Hdr Brachytherapy Quality Assurance, Anna Romanyukha, Mauro Carrara, Dean L. Cutajar, Marco Petasecca, Iolanda Fuduli, Tebarak Al-Salmani, Michael L. F Lerch, Vladimir Perevertaylo, Davide Mazzeo, Annamaria Cerrotta, Carlo Fallai, Emanuele Pignoli, Anatoly B. Rosenfeld Jan 2019

Preliminary Epi-Diode Characterization For Hdr Brachytherapy Quality Assurance, Anna Romanyukha, Mauro Carrara, Dean L. Cutajar, Marco Petasecca, Iolanda Fuduli, Tebarak Al-Salmani, Michael L. F Lerch, Vladimir Perevertaylo, Davide Mazzeo, Annamaria Cerrotta, Carlo Fallai, Emanuele Pignoli, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part B

High Dose Rate vaginal brachytherapy for endometrial cancer has evolved from simple single-channel (i.e. cylindrical applicator) deliveries to treatments involving several channels (i.e. multichannel applicator) for the radiotherapy source to dwell, increasing the complexity of the dose distribution, and allowing more space for potential errors. For this reason real-time treatment verification has gained a greater importance than ever before, and more methods need to be developed in order to provide assurance that the dose delivery has been carried out as intended by the hospital staff. P-type silicon epi diodes have been designed at the Centre for Medical Radiation Physics (CMRP) …

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Characterization Of A High Spatiotemporal Resolution Monolithic Silicon Strip Detector For Mri-Linac Dosimetry, Trent Causer, Tess Chapman, Bradley M. Oborn, Jeremy A. Davis, Marco Petasecca, Anatoly B. Rosenfeld, Peter E. Metcalfe Jan 2019

Characterization Of A High Spatiotemporal Resolution Monolithic Silicon Strip Detector For Mri-Linac Dosimetry, Trent Causer, Tess Chapman, Bradley M. Oborn, Jeremy A. Davis, Marco Petasecca, Anatoly B. Rosenfeld, Peter E. Metcalfe

Faculty of Engineering and Information Sciences - Papers: Part B

Multiple vendors are now offering real-time MRI-guided radiotherapy systems. Quality assurance of small fields delivered with an MR-RT system requires detectors with high spatiotemporal resolution, and magnetic insensitivity. High spatial resolution is required to characterise the asymmetric penumbra that transverse designs demonstrate. In this work the authors describe the characterisation of the dosimetric performance of a monolithic silicon strip detector mounted to a flexible polymide (Kapton) printed circuit board intended for use in MRI-linac dosimetry.

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Characterization Of Prompt Gamma Rays For In-Vivo Range Verification In Hadron Therapy: A Geant4 Simulation Study, Melek Zarifi, Susanna Guatelli, Yujin Qi, David Bolst, Dale A. Prokopovich, Anatoly B. Rosenfeld Jan 2019

Characterization Of Prompt Gamma Rays For In-Vivo Range Verification In Hadron Therapy: A Geant4 Simulation Study, Melek Zarifi, Susanna Guatelli, Yujin Qi, David Bolst, Dale A. Prokopovich, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part B

Prompt gamma (PG) rays have been proposed for in-vivo beam range verification during treatment delivery. As a secondary by-product emitted almost instantaneously upon ion-nuclear interaction, PG rays offer real-time tracking of the Bragg peak (BP). However their detection is challenging since they have a broad energy spectrum with interference from neutrons and stray gamma rays. Numerous approaches have been proposed to utilise PG for in-vivo beam range verification. In this work, Geant4 Monte Carlo (MC) simulations have been used to study the spectral, spatial, temporal and angular distribution characteristics of PG emission and detection from hadron radiation fields of varying …

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Modelling The Biological Beamline At Himac Using Geant4, David Bolst, Linh T. Tran, Susanna Guatelli, Naruhiro Matsufuji, Anatoly B. Rosenfeld Jan 2019

Modelling The Biological Beamline At Himac Using Geant4, David Bolst, Linh T. Tran, Susanna Guatelli, Naruhiro Matsufuji, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part B

A Geant4 simulation modelling the passive Biological beamline at the Heavy Ion Medical Accelerator Chiba (HIMAC) is described and validated against experimental measurements for a mono-energetic and spread out Bragg peak (SOBP) 12 C beam. Comparisons to experimental data showed good agreement for both lateral and depth dose profiles. It was found that simplifying the simulation model by generating a cone beam instead of using the wobbler magnets provided a good approximation for both lateral and depth dose measurements.

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Dose Build Up Characteristics With Exaskin Bolus During 6mv Radiotherapy: Moskin Dosimetry Results, Taghreed Al-Sudani, Peter E. Metcalfe, Dean L. Cutajar, Kananan Utitsarn, Abdurrahman Ceylan, Jeremy A. Davis, Anatoly B. Rosenfeld Jan 2019

Dose Build Up Characteristics With Exaskin Bolus During 6mv Radiotherapy: Moskin Dosimetry Results, Taghreed Al-Sudani, Peter E. Metcalfe, Dean L. Cutajar, Kananan Utitsarn, Abdurrahman Ceylan, Jeremy A. Davis, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part B

Skin dose evaluation is important to ensure adequate dose to the superficial target volume and to avoid severe skin toxicity. The purpose of this study is to investigate the build-up dose characteristics of eXaSkin bolus for 6MV photon beams and evaluate this material for use in skin tumor treatment. Using a 6MV Varian LINAC with field size of 10x10cm 2 , the surface and build up dose characteristics of eXaSkin (thickness = 3, 5, 8, 10, 15 and 26 mm) was investigated in comparison with solid water (thickness = 2, 5, 15, 20 and 26 mm). Dose measurements were performed …

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Metamorphic Relations For Data Validation: A Case Study Of Translated Text Messages, Boyang Yan, Brian Yecies, Zhi Q. Zhou Jan 2019

Metamorphic Relations For Data Validation: A Case Study Of Translated Text Messages, Boyang Yan, Brian Yecies, Zhi Q. Zhou

Faculty of Engineering and Information Sciences - Papers: Part B

In conventional metamorphic testing, metamorphic relations (MRs) are identified as necessary properties of a computer program's intended functionality, whereby violations of MRs reveal faults in the program - under the assumption that the source and follow-up inputs (test cases used in metamorphic testing) are valid. In the present study, the authors argue that MRs can also be used to validate and assess the quality of the program's input data - under the assumption that the source or follow-up inputs can be inappropriately generated. Using this new perspective, a case study in the natural language processing domain is used to explore …

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Aerodynamic Analysis Of A Stator-Augmented Linear Cascade Wind Turbine, Seyed A. Jafari, Kenny Kwok, Farzad Safaei, Buyung Kosasih, Ming Zhao Jan 2019

Aerodynamic Analysis Of A Stator-Augmented Linear Cascade Wind Turbine, Seyed A. Jafari, Kenny Kwok, Farzad Safaei, Buyung Kosasih, Ming Zhao

Faculty of Engineering and Information Sciences - Papers: Part B

This study proposes to attach stator vanes to PowerWindow, a linear cascade wind turbine, to improve the flow direction in the device. By controlling the angle of attack, the stator vanes increase the acting force and decrease the undesirable force on PowerWindow blades. An analytical model using blade element momentum theory is developed for the new configuration, referred to as stator-augmented PowerWindow. The analytical model has been verified by a computational fluid dynamic simulation. This study shows that the stator vanes are able to minimize/neutralize the undesirable axial force on PowerWindow so that the thrust coefficient decreases from 0.035 in …

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V-Matrix-Based Scalable Data Aggregation Scheme In Wsn, Xindi Wang, Qingfeng Zhou, Jun Tong Jan 2019

V-Matrix-Based Scalable Data Aggregation Scheme In Wsn, Xindi Wang, Qingfeng Zhou, Jun Tong

Faculty of Engineering and Information Sciences - Papers: Part B

Data aggregation is one of the most important functions provided by wireless sensor networks (WSNs). Among a variety of data aggregation schemes, the coding-based approaches (such as Compressive sensing (CS) and other similar programs) can significantly reduce traffic quantity by encoding the raw sensed data using weight vectors. The critical feature to design a coding-based data aggregation protocol is to construct a weight/measurement matrix for the application scenario. After that, the sink node assigns the column of the matrix, which is treated as the weight vector during the encoding process, to each sensor node respectively. However, for a dynamic scenario …

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Modulation Of Terahertz Radiation From Graphene Surface Plasmon Polaritons Via Surface Acoustic Wave, Sichen Jin, Xinke Wang, Peng Han, Wenfeng Sun, Shengfei Feng, Jiasheng Ye, C Zhang, Yan Zhang Jan 2019

Modulation Of Terahertz Radiation From Graphene Surface Plasmon Polaritons Via Surface Acoustic Wave, Sichen Jin, Xinke Wang, Peng Han, Wenfeng Sun, Shengfei Feng, Jiasheng Ye, C Zhang, Yan Zhang

Faculty of Engineering and Information Sciences - Papers: Part B

We present a theoretical study of terahertz (THz) radiation induced by surface plasmon polaritons (SPPs) on a graphene layer under modulation by a surface acoustic wave (SAW). In our gedanken experiment, SPPs are excited by an electron beam moving on a graphene layer situated on a piezoelectric MoS 2 flake. Under modulation by the SAW field, charge carriers are periodically distributed over the MoS 2 flake, and this causes periodically distributed permittivity. The periodic permittivity structure of the MoS 2 flake folds the SPP dispersion curve back into the center of the first Brillouin zone, in a manner analogous to …

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The Liver Inspectr Trial: Towards Improved Understanding Of Liver Function Following Radiotherapy, Nicholas G. Hardcastle, Carol Haddad, G Schembri, D Bailey, B Jones, Adam Briggs, George Hruby, Andrew Kneebone Jan 2019

The Liver Inspectr Trial: Towards Improved Understanding Of Liver Function Following Radiotherapy, Nicholas G. Hardcastle, Carol Haddad, G Schembri, D Bailey, B Jones, Adam Briggs, George Hruby, Andrew Kneebone

Faculty of Engineering and Information Sciences - Papers: Part B

Liver stereotactic ablative body radiotherapy (SABR) is an emerging treatment option for primary liver cancer and liver metastases. Liver SABR can provide high rates of local control however tumour doses are limited by dose to surrounding organs at risk including liver and gastrointestinal structures. Dose limits to liver are based on anatomical liver, without understanding of underlying liver function. This report describes a prospective clinical trial which measures the spatial variance of liver function through Tc-99m Mebrofenin SPECT in the context of liver SABR.

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Today's Monolithic Silicon Array Detector For Small Field Dosimetry: The Octa, Giordano Biasi, Khalsa Al Shukaili, Marco Petasecca, Stephanie Corde, Susanna Guatelli, Vladimir Perevertaylo, Tomas Kron, Anatoly B. Rosenfeld Jan 2019

Today's Monolithic Silicon Array Detector For Small Field Dosimetry: The Octa, Giordano Biasi, Khalsa Al Shukaili, Marco Petasecca, Stephanie Corde, Susanna Guatelli, Vladimir Perevertaylo, Tomas Kron, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part B

The dosimetry of small photon beams is challenging due to detector position uncertainties, dose averaging and lack of electronic equilibrium. Currently only few, single detectors are suitable for measurements in this context, and none is ideal. This study reports on the dosimetric characterization of small fields collimated by fixed cones, performed by a novel 2D monolithic silicon array detector, the Octa.

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3d Sensitive Volume Microdosimeter With Improved Tissue Equivalency: Charge Collection Study And Its Application In 12 C Ion Therapy, Benjamin James, Linh T. Tran, David Bolst, Dale A. Prokopovich, Mark I. Reinhard, Michael L. F Lerch, Marco Petasecca, Susanna Guatelli, Marco Povoli, Angela Kok, Naruhiro Matsufuji, Michael A. Jackson, Anatoly B. Rosenfeld Jan 2019

3d Sensitive Volume Microdosimeter With Improved Tissue Equivalency: Charge Collection Study And Its Application In 12 C Ion Therapy, Benjamin James, Linh T. Tran, David Bolst, Dale A. Prokopovich, Mark I. Reinhard, Michael L. F Lerch, Marco Petasecca, Susanna Guatelli, Marco Povoli, Angela Kok, Naruhiro Matsufuji, Michael A. Jackson, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part B

No abstract provided.

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Parametric Characterization Of Penumbra Reduction For Aperture-Collimated Pencil Beam Scanning (Pbs) Proton Therapy, Dominic Maes, Rajesh Regmi, Phillip Taddei, Charles Bloch, Steven Bowen, Alexander Nevitt, Erick Leuro, Tony Wong, Anatoly B. Rosenfeld, Jatinder Saini Jan 2019

Parametric Characterization Of Penumbra Reduction For Aperture-Collimated Pencil Beam Scanning (Pbs) Proton Therapy, Dominic Maes, Rajesh Regmi, Phillip Taddei, Charles Bloch, Steven Bowen, Alexander Nevitt, Erick Leuro, Tony Wong, Anatoly B. Rosenfeld, Jatinder Saini

Faculty of Engineering and Information Sciences - Papers: Part B

Recently, a commercial treatment planning system (TPS) has implemented aperture collimators for PBS dose calculations which can serve to reduce lateral penumbra. This study characterized the variation in magnitude of lateral penumbra for collimated and un-collimated PBS fields versus the parameters of air gap, depth, and range shifter thickness. Comparisons were performed in a homogenous geometry between measured data and calculations made by a commercial TPS. Beam-specific target volumes were generated for collimated and un-collimated PBS fields and optimized for various range shifter thicknesses and air gaps. Lateral penumbra (80%-20% distance) was measured across each target volume to characterize penumbra …

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Superconducting Pair-Breaking Under Intense Sub-Gap Terahertz Radiation, Jie Tian, Jack Zuber, Sunchao Huang, C Zhang Jan 2019

Superconducting Pair-Breaking Under Intense Sub-Gap Terahertz Radiation, Jie Tian, Jack Zuber, Sunchao Huang, C Zhang

Faculty of Engineering and Information Sciences - Papers: Part B

We study the effect of a strong and low frequency (ω < Δ, the superconducting gap) electrical field on a superconducting state. It is found that the superconducting gap decreases with the field intensity and wavelength. The physical mechanism for this dependence is the multiphoton absorption by a superconducting electron. By constructing the state of a superconducting electron dressed by photons, we determined the dependence of the superconducting gap on E / ω and temperature. We show that the critical temperature is determined by the parameter E / ω which is distinct from that induced by the heating effect. The result is consistent with experimental findings. This result can be applied to study terahertz nonlinear superconducting metamaterials.

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Performance Analysis Of The Activated Sludge Model (Number 1), Mark Nelson, Harvinder S. Sidhu, Simon D. Watt, Faisal I. Hai Jan 2019

Performance Analysis Of The Activated Sludge Model (Number 1), Mark Nelson, Harvinder S. Sidhu, Simon D. Watt, Faisal I. Hai

Faculty of Engineering and Information Sciences - Papers: Part B

The activated sludge process is widely used to treat both municipal sewage and a variety of industrial wastewaters. We investigate the steady-state behaviour of an activated sludge process. We use the activated sludge model number one, an internationally accepted model, to describe the biochemical, biological, and physical-chemical phenomena that occur inside the bioreactor. The treatment configuration consists of a single aerated reactor attached to a settling unit. Continuation methods are used to determine the steady-states of the model as a function of the hydraulic residence time. From these solutions we construct important operational parameters including the chemical oxygen demand, total …

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We Can Halve Train Travel Times Between Our Cities By Moving To Faster Rail, Philip G. Laird Jan 2019

We Can Halve Train Travel Times Between Our Cities By Moving To Faster Rail, Philip G. Laird

Faculty of Engineering and Information Sciences - Papers: Part B

The Melbourne-Sydney air corridor is now the second-busiest in the world. That's true for either the number of passenger planes flying between the two airports or by counting actual passenger numbers, now over 9 million passengers a year. That's an increase of 28% since 2009. On an average day, some 12,330 people get on a plane in Sydney to fly to Melbourne. A similar number make the reverse journey. Most passengers will have taken some time to get the airport and waited well over half an hour at the airport just to get on the plane. Once on board, the …

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Constructing Kms States From Infinite-Dimensional Spectral Triples, Magnus Goffeng, Adam C. Rennie, Alexandr Usachev Jan 2019

Constructing Kms States From Infinite-Dimensional Spectral Triples, Magnus Goffeng, Adam C. Rennie, Alexandr Usachev

Faculty of Engineering and Information Sciences - Papers: Part B

We construct KMS-states from Li1-summable semifinite spectral triples and show that in several important examples the construction coincides with well-known direct constructions of KMS-states for naturally defined flows. Under further summability assumptions the constructed KMS-state can be computed in terms of Dixmier traces. For closed manifolds, we recover the ordinary Lebesgue integral. For Cuntz-Pimsner algebras with their gauge flow, the construction produces KMS-states from traces on the coefficient algebra and recovers the Laca-Neshveyev correspondence. For a discrete group acting on its Stone-Čech boundary, we recover the Patterson-Sullivan measures on the Stone-Čech boundary for a flow defined from the Radon-Nikodym cocycle.

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Efficient Attribute-Based Encryption With Privacy-Preserving Key Generation And Its Application In Industrial Cloud, Yujiao Song, Hao Wang, Xiaochao Wei, Lei Wu Jan 2019

Efficient Attribute-Based Encryption With Privacy-Preserving Key Generation And Its Application In Industrial Cloud, Yujiao Song, Hao Wang, Xiaochao Wei, Lei Wu

Faculty of Engineering and Information Sciences - Papers: Part B

Due to the rapid development of new technologies such as cloud computing, Internet of Things (IoT), and mobile Internet, the data volumes are exploding. Particularly, in the industrial field, a large amount of data is generated every day. How to manage and use industrial Big Data primely is a thorny challenge for every industrial enterprise manager. As an emerging form of service, cloud computing technology provides a good solution. It receives more and more attention and support due to its flexible configuration, on-demand purchase, and easy maintenance. Using cloud technology, enterprises get rid of the heavy data management work and …

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A Secure And Efficient Data Sharing And Searching Scheme In Wireless Sensor Networks, Binrui Zhu, Willy Susilo, Jing Qin, Fuchun Guo, Zhen Zhao, Jixin Ma Jan 2019

A Secure And Efficient Data Sharing And Searching Scheme In Wireless Sensor Networks, Binrui Zhu, Willy Susilo, Jing Qin, Fuchun Guo, Zhen Zhao, Jixin Ma

Faculty of Engineering and Information Sciences - Papers: Part B

Wireless sensor networks (WSN) generally utilize cloud computing to store and process sensing data in real time, namely, cloud-assisted WSN. However, the cloud-assisted WSN faces new security challenges, particularly outsourced data confidentiality. Data Encryption is a fundamental approach but it limits target data retrieval in massive encrypted data. Public key encryption with keyword search (PEKS) enables a data receiver to retrieve encrypted data containing some specific keyword in cloud-assisted WSN. However, the traditional PEKS schemes suffer from an inherent problem, namely, the keyword guessing attack (KGA). KGA includes off-line KGA and on-line KGA. To date, the existing literature on PEKS …

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A Comparison Of Methods For Poverty Estimation In Developing Countries, Sumonkanti Das, Stephen Haslett Jan 2019

A Comparison Of Methods For Poverty Estimation In Developing Countries, Sumonkanti Das, Stephen Haslett

Faculty of Engineering and Information Sciences - Papers: Part B

Small area estimation is a widely used indirect estimation technique for micro-level geographic profiling. Three unit level small area estimation techniques-the ELL or World Bank method, empirical best prediction (EBP) and M-quantile (MQ) - can estimate micro-level Foster, Greer, & Thorbecke (FGT) indicators: poverty incidence, gap and severity using both unit level survey and census data. However, they use different assumptions. The effects of using model-based unit level census data reconstructed from cross-tabulations and having no cluster level contextual variables for models are discussed, as are effects of small area and cluster level heterogeneity. A simulation-based comparison of ELL, EBP …

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High Sensitive Sensing By A Laser Diode With Dual Optical Feedback Operating At Period-One Oscillation, Yuxi Ruan, Bin Liu, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong Jan 2019

High Sensitive Sensing By A Laser Diode With Dual Optical Feedback Operating At Period-One Oscillation, Yuxi Ruan, Bin Liu, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong

Faculty of Engineering and Information Sciences - Papers: Part B

Laser dynamics have great potential for various applications, ranging from cryptography to microwave photonics and instrumentation. This letter presents a design for achieving high sensitive sensing and measurement using the dynamics of a laser diode (LD) with a dual external cavity. In the design, one cavity is used to control the dynamics, making the LD operate at the period-one (P1) oscillation state, and the other one is associated with the quantities to be measured. The Lang-Kobayashi equations are modified and solved to develop a bifurcation diagram for the design, from which we determine the P1 state and investigate the sensing …

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Whitmore Tension Section And Block Shear, Matthew Elliott, Lip H. Teh Jan 2019

Whitmore Tension Section And Block Shear, Matthew Elliott, Lip H. Teh

Faculty of Engineering and Information Sciences - Papers: Part B

This paper examines the validity of the Whitmore net section tension capacity for the design of bolted gusset plates. Using simple algebra, this paper first shows that the Whitmore criterion and the correct block shear criterion would give similar results for a standard connection having approximately seven rows of bolts. It then shows that the Whitmore criterion severely underestimates the actual capacities of connections having two or three bolt rows tested by independent researchers. Conversely, it also shows that the same criterion overestimates the capacities of connections having nine bolt rows that were believed by the testing researchers to fail …

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The Influence Of Sorption Pressure On Gas Diffusion In Coal Particles: An Experimental Study, Xin Yang, Gongda Wang, Junying Zhang, Ting X. Ren Jan 2019

The Influence Of Sorption Pressure On Gas Diffusion In Coal Particles: An Experimental Study, Xin Yang, Gongda Wang, Junying Zhang, Ting X. Ren

Faculty of Engineering and Information Sciences - Papers: Part B

Gas pressure changes during the process of coal mine gas drainage and CBM recovery. It is of great importance to understand the influence of sorption pressure on gas diffusion; however, the topic remains controversial in past studies. In this study, four samples with different coal ranks were collected and diffusion experiments were conducted under different pressures through the adsorption and desorption processes. Three widely used models, i.e., the unipore diffusion (UD) model, the bidisperse diffusion (BD) model and the dispersive diffusion (DD) model, were adopted to compare the applicability and to calculate the diffusion coefficients. Results show that for all …

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Predicted Behavior Of Saturated Granular Waste Blended With Rubber Crumbs, Yujie Qi, Buddhima Indraratna, Matthew Richard Coop Jan 2019

Predicted Behavior Of Saturated Granular Waste Blended With Rubber Crumbs, Yujie Qi, Buddhima Indraratna, Matthew Richard Coop

Faculty of Engineering and Information Sciences - Papers: Part B

Recycling waste materials, such as steel furnace slag (SFS), coal wash (CW), and rubber crumbs (RC) for transport infrastructure is environmentally friendly and offers significant economic benefits. This paper presents a fundamental study of the geotechnical characteristics of this blended matrix (SFSþCWþRC). A semiempirical constitutive model for SFSþCWþRC mixtures is proposed within the framework of critical state (CS) soil mechanics and based on the bounding surface plasticity theory. A CS surface is formulated with the changing RC contents in the waste mixtures, and an experimental relationship between the total work input (Wtotal) and CS parameter (Mcs) is established to capture …

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Flood Mitigation Using An Innovative Flood Control Scheme In A Large Lake: Dongting Lake, China, Yizhuang Liu, Shu-Qing Yang, Changbo Jiang, Muttucumaru Sivakumar, Keith Enever, Yuannan Long, Bin Deng, Usman Khalil, Lingshi Yin Jan 2019

Flood Mitigation Using An Innovative Flood Control Scheme In A Large Lake: Dongting Lake, China, Yizhuang Liu, Shu-Qing Yang, Changbo Jiang, Muttucumaru Sivakumar, Keith Enever, Yuannan Long, Bin Deng, Usman Khalil, Lingshi Yin

Faculty of Engineering and Information Sciences - Papers: Part B

A large lake plays an important role in mitigating flood disasters in its nearby regions during the flooding period; however, the effect is limited, because most of its storage capacity becomes dead storage prior to the arrival of the flood wave. In the current study, an innovative flood control scheme (IFCS) is applied to Dongting Lake (the second largest freshwater lake in China) to alleviate flood disasters. MIKE 21 FM was used to examine its feasibility to mitigate flood disasters. One of the largest floods in the 20th century, the 1998-type flood, was modelled and the maximum water levels with/without …

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Phase Change Material Blind System For Double Skin Façade Integration: System Development And Thermal Performance Evaluation, Yilin Li, Jo Darkwa, Georgios Kokogiannakis, Weiguang Su Jan 2019

Phase Change Material Blind System For Double Skin Façade Integration: System Development And Thermal Performance Evaluation, Yilin Li, Jo Darkwa, Georgios Kokogiannakis, Weiguang Su

Faculty of Engineering and Information Sciences - Papers: Part B

Double skin facades (DSFs) are often applied as energy reducing elements in modern buildings, but do experience overheating problems in warm seasons which may contribute to increase in cooling loads. There are currently various thermal management devices being used in DSF but have limitations such as secondary thermal transmittance and low energy storage capacity. In this paper, a novel laminated composite phase change material (PCM) blind system with high thermal energy storage capacity has been developed and evaluated in a typical DSF building. The results showed that the integrated PCM blind system was able to keep the average air temperature …

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Steady Laminar Natural Convection Of Nanofluid Under The Impact Of Magnetic Field On Two-Dimensional Cavity With Radiation, S Saleem, Trung Nguyen-Thoi, Ahmad Shafee, Zhixiong Li, Ebenezer Bonyah, A Khan, Iqra Shehzadi Jan 2019

Steady Laminar Natural Convection Of Nanofluid Under The Impact Of Magnetic Field On Two-Dimensional Cavity With Radiation, S Saleem, Trung Nguyen-Thoi, Ahmad Shafee, Zhixiong Li, Ebenezer Bonyah, A Khan, Iqra Shehzadi

Faculty of Engineering and Information Sciences - Papers: Part B

In current investigation, steady free convection of nanofluid has been presented in occurrence of magnetic field. Non-Darcy model was utilized to employ porous terms in momentum equations. Working fluid is H2O based nanofluid. Radiation effect has been reported for various shapes of nanoparticles. Impacts of shape factor, radiation parameter, magnetic force, buoyancy and shape impact on nanofluid treatment were demonstrated. Result demonstrated that maximum convective flow is observed for platelet shape. Darcy number produces more random patterns of isotherms.

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Analysis Of Surface Roughness Evolution Of Ferritic Stainless Steel Using Crystal Plasticity Finite Element Method, Xiaoguang Ma, Jingwei Zhao, Wei Du, Xin Zhang, Zhengyi Jiang Jan 2019

Analysis Of Surface Roughness Evolution Of Ferritic Stainless Steel Using Crystal Plasticity Finite Element Method, Xiaoguang Ma, Jingwei Zhao, Wei Du, Xin Zhang, Zhengyi Jiang

Faculty of Engineering and Information Sciences - Papers: Part B

In order to evaluate the surface quality of ferritic stainless steel (FSS) sheets tensile deformation, a crystal plasticity (CP) model, in which the constitutive laws were incorporated with the consideration of the heterogeneous distribution of the properties of grains, was established to analyse the effect of texture, grain sizes and initial surface roughness on the surface roughness evolution of FSS sheets. The electron backscatter diffraction (EBSD) tests were performed to characterise the texture and the grains. A tensile test of the represent volume was simulated and further verified by experimental results. The numerical simulation results indicate that the surface roughness …

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Comparison Of Butyric Acid Leaching Behaviors Of Zinc From Three Basic Oxygen Steelmaking Filter Cakes, Jingxiu Wang, Zhe Wang, Zhongzhi Zhang, Guangqing Zhang Jan 2019

Comparison Of Butyric Acid Leaching Behaviors Of Zinc From Three Basic Oxygen Steelmaking Filter Cakes, Jingxiu Wang, Zhe Wang, Zhongzhi Zhang, Guangqing Zhang

Faculty of Engineering and Information Sciences - Papers: Part B

The selective leaching of zinc from three different basic oxygen steelmaking (BOS) filter cakes by butyric acid was investigated to compare the leaching behaviors of zinc and further to establish the correlation of the zinc leaching performances and the chemical compositions. The effects of acid concentration and the acid to solid (L/S) stoichiometric ratio were studied, with different optimal leaching conditions obtained. BOS-1 showed the lowest leachability with only less than 10% of zinc removed by 0.5 M acid concentration and 90% of the L/S stoichiometric ratio in 10 h. The best zinc selectivity was achieved with BOS-2 at 51.2% …

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