Open Access. Powered by Scholars. Published by Universities.®
Social and Behavioral Sciences Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (462)
- Science and Technology Studies (462)
- Education (201)
- Arts and Humanities (42)
- Medicine and Health Sciences (38)
-
- Digital Humanities (37)
- Agricultural and Resource Economics (36)
- Art Practice (36)
- Art and Design (36)
- Australian Studies (36)
- Communication (36)
- Creative Writing (36)
- English Language and Literature (36)
- Feminist, Gender, and Sexuality Studies (36)
- Film and Media Studies (36)
- Fine Arts (36)
- Legal Studies (36)
- Linguistics (36)
- Philosophy (36)
- Political Science (36)
- Public Health (36)
- Race, Ethnicity and Post-Colonial Studies (36)
- Sociology (36)
- Theatre and Performance Studies (36)
- Audio Arts and Acoustics (1)
- Radio (1)
- Keyword
-
- Performance (12)
- Columns (10)
- Concrete (10)
- Steel (10)
- Under (8)
-
- Analysis (7)
- Tubular (7)
- Approach (6)
- Concrete-filled (6)
- Evaluation (6)
- Short (6)
- High (5)
- Loaded (5)
- Square (5)
- Strength (5)
- Systems (5)
- Australian (4)
- Control (4)
- Double (4)
- Energy (4)
- Experimental (4)
- Knowledge (4)
- Learning (4)
- Numerical (4)
- Research (4)
- Review (4)
- Self-interference (4)
- Simulation (4)
- Study (4)
- Teacher (4)
- Publication
- Publication Type
- File Type
Articles 481 - 510 of 671
Full-Text Articles in Social and Behavioral Sciences
Microstructure And Mechanical Properties Of Thin Varying Thickness Strips With Different Transition Zones Produced By Micro Flexible Rolling, Mingshuai Huo, Jingwei Zhao, Haibo Xie, Shengli Li, Hongmei Zhang, Zhiping Hu, Zhengyi Jiang
Microstructure And Mechanical Properties Of Thin Varying Thickness Strips With Different Transition Zones Produced By Micro Flexible Rolling, Mingshuai Huo, Jingwei Zhao, Haibo Xie, Shengli Li, Hongmei Zhang, Zhiping Hu, Zhengyi Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
In order to better understand transition zones with a variety of structural features that affect thin varying thickness strips, 6061 aluminium alloy thin strips were flexibly rolled into different thickness ratios and transition zone lengths, using an innovative micro rolling mill. The microstructure and mechanical properties of the thin varying thickness strips produced by micro flexible rolling were systematically investigated and the mechanisms were analysed. The results indicate that a thin varying thickness strip with either a larger thickness ratio or a shorter transition zone length will present a relatively high slope of the transition zone during micro flexible rolling. …
Quantification Of Texture-Induced Ridging In Ferritic Stainless Steels 430 And 430lr During Tensile Deformation, Xiaoguang Ma, Jingwei Zhao, Wei Du, Xin Zhang, Laizhu Jiang, Zhengyi Jiang
Quantification Of Texture-Induced Ridging In Ferritic Stainless Steels 430 And 430lr During Tensile Deformation, Xiaoguang Ma, Jingwei Zhao, Wei Du, Xin Zhang, Laizhu Jiang, Zhengyi Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
A comparative study has been carried out to assess the effect of rolling and annealing processes on ridging generation of ferritic stainless steels (FSSs) 430 and 430LR after tensile deformation. The results show that FSS 430LR has better ridging resistance owing tothe refinement of microstructure and crystallographic texture optimisation. A 30% reduction of ridging height can be achieved using FSS 430LR compared to FSS 430 after tension.Optimal reduction during cold rolling benefits the microstructural refinement and surface quality improvement of FSSs 430 and 430LR. Both theoretical calculations and experimental results indicate that the (1 1 2) and the (0 0 …
Numerical And Experimental Studies On A New Variable Stiffness And Damping Magnetorheological Fluid Damper, Hui Huang, Shuaishuai Sun, Shumei Chen, Weihua Li
Numerical And Experimental Studies On A New Variable Stiffness And Damping Magnetorheological Fluid Damper, Hui Huang, Shuaishuai Sun, Shumei Chen, Weihua Li
Faculty of Engineering and Information Sciences - Papers: Part B
This article describes a new magnetorheological fluid damper; its damping and stiffness are variable and controllable through the compact structure of two damping units and a spring. The ability of variable stiffness and damping enables it to be used for more effective vibration control in wide-band excitation wave occasions. First, the effective stiffness and output damping force are calculated in theory. Then, the magnetic field is simulated by finite element analysis. After the prototype of the new magnetorheological fluid damper is developed and machined, the damper's performances are tested in a hydraulic actuated MTS machine, including stiffness variability and damping …
Rapid, One-Step Preparation Of Sers Substrate In Microfluidic Channel For Detection Of Molecules And Heavy Metal Ions, Sheng Yan, Fangjia Chu, Haiyun Zhang, Yuan Yuan, Yingzhou Huang, Anping Liu, Shuxia Wang, Weihua Li, Shunbo Li, Weijia Wen
Rapid, One-Step Preparation Of Sers Substrate In Microfluidic Channel For Detection Of Molecules And Heavy Metal Ions, Sheng Yan, Fangjia Chu, Haiyun Zhang, Yuan Yuan, Yingzhou Huang, Anping Liu, Shuxia Wang, Weihua Li, Shunbo Li, Weijia Wen
Faculty of Engineering and Information Sciences - Papers: Part B
On-chip fabrication of surface-enhanced Raman spectroscopy (SERS)-active materials enables continuous, real-time sensing of targets in the microfluidic chip. However, the current techniques require the time-consuming, complicated process and costly, bulky facilities. In this work, we present a novel method for synthesis of Ag nanostructures in a microfluidic channel via one-step electroless galvanic replacement reaction. The whole reaction could be achieved <10 >mins, while the traditional methods take hours. The microfluidic channel has a Cu base, which can reduce Ag ions to Ag nanoparticles in the presence of AgNO3 solution. The new technique enables the label-free sensing of chemical molecules (i.e., …
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
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 …
A Comparison Of Methods For Poverty Estimation In Developing Countries, Sumonkanti Das, Stephen Haslett
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 …
Conditionally Integrable Nonlinear Diffusion With Diffusivity 1/U, Philip Broadbridge, Joanna M. Goard
Conditionally Integrable Nonlinear Diffusion With Diffusivity 1/U, Philip Broadbridge, Joanna M. Goard
Faculty of Engineering and Information Sciences - Papers: Part B
An explicit mapping is given from the space of general complex meromorphic functions to a space of special time-dependent solutions of the 1 + 2-dimensional nonlinear diffusion equation with diffusivity depending on concentration as D = 1/u. These solutions have constant-flux boundary conditions. Some simple examples are constructed, including that of a line source enclosed by a cylindrical barrier. This has direct application to electron diffusion in a laser-heated plasma.
Carbon Nanotube Based Fiber Supercapacitor As Wearable Energy Storage, Zan Lu, Raad Raad, Farzad Safaei, Jiangtao Xi, Zhoufeng Liu, Javad Foroughi
Carbon Nanotube Based Fiber Supercapacitor As Wearable Energy Storage, Zan Lu, Raad Raad, Farzad Safaei, Jiangtao Xi, Zhoufeng Liu, Javad Foroughi
Faculty of Engineering and Information Sciences - Papers: Part B
Energy storage is a key requirement for the emerging wearable technologies. Recent progress in this direction includes the development of fiber based batteries and capacitors and even some examples of such fibers incorporated into prototype textiles. Herein we discuss the advantages of using the wet-spinning process to create nanostructured carbon basedmaterials as wearable energy storage. The ability to control the physical, mechanical, electrical, and electrochemical properties of carbon nanotube based fibers holds great promise to develop smart polymeric structure as an energy storing materials including fibers and textiles. This is the first comprehensive review to discuss effect of nanostructured energy …
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
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 …
End-To-End Multimodal 16-Day Hatching Eggs Classification, Lei Geng, Zhen Peng, Zhitao Xiao, Jiangtao Xi
End-To-End Multimodal 16-Day Hatching Eggs Classification, Lei Geng, Zhen Peng, Zhitao Xiao, Jiangtao Xi
Faculty of Engineering and Information Sciences - Papers: Part B
Sixteen-day hatching eggs are divided into fertile eggs, waste eggs, and recovered eggs. Because different categoriesmayhave the same characteristics, they are difficult to classify. Fewexisting algorithms can successfully solve this problem. To this end, we propose an end-to-end deep learning network structure that uses multiple forms of signals. First, we collect the photoplethysmography (PPG) signal of the hatching eggs to obtain heartbeat information and photograph hatching eggs with a camera to obtain blood vessel pictures. Second, we use two different network structures to process the two kinds of signals: Temporal convolutional networks are used to process heartbeat information, and convolutional …
Evaluation Of Coal Seam Gas Drainability For Outburst-Prone And High-Co2-Containing Coal Seam, Lei Zhang, Ting X. Ren, Naj Aziz, Cun Zhang
Evaluation Of Coal Seam Gas Drainability For Outburst-Prone And High-Co2-Containing Coal Seam, Lei Zhang, Ting X. Ren, Naj Aziz, Cun Zhang
Faculty of Engineering and Information Sciences - Papers: Part B
This paper presents the results of an evaluation study of gas drainability in the Bulli seam in the Southern Coalfield of the Sydney Basin, NSW, Australia, where the coal seam gas (CSG) contains a high proportion of carbon dioxide (CO 2 ). Historically the gas drainability in some particular areas of this coal seam was found to be particularly poor, which posed a significant challenge to gas predrainage. As a result, a large volume of greenhouse gases were released to the atmosphere during mining of the coal seam. Furthermore, the high gas content associated with the CO 2 -rich composition …
Analytical Investigation On The Behavior Of Circular And Square Rc Columns Strengthened With Rpc And Wrapped With Frp Under Uniaxial Compression, Atheer Hilal Mahdi Al - Gburi, M Neaz Sheikh, Muhammad N. S Hadi
Analytical Investigation On The Behavior Of Circular And Square Rc Columns Strengthened With Rpc And Wrapped With Frp Under Uniaxial Compression, Atheer Hilal Mahdi Al - Gburi, M Neaz Sheikh, Muhammad N. S Hadi
Faculty of Engineering and Information Sciences - Papers: Part B
This paper presents an analytical approach to predict the uniaxial compression behavior of circular and square reinforced concrete (RC) columns strengthened with reactive powder concrete (RPC) jackets and wrapped with fiber reinforced polymer (FRP). The analytical axial load-axial strain responses of the strengthened RC columns were compared with experimental axial load-axial strain responses. The analytical approach presented in this study conservatively predicted the ultimate axial load of the strengthened RC columns. Also, a parametric study was carried out to investigate key factors that influence the axial load-axial strain response of the strengthened RC columns. It was found that the ratio …
The Rapid Chemically Induced Corrosion Of Concrete Sewers At High H2s Concentration, Xuan Li, Liza O'Moore, Yarong Song, Philp Bond, Zhiguo Yuan, Simeon Wilkie, Lucija Hanzic, Guangming Jiang
The Rapid Chemically Induced Corrosion Of Concrete Sewers At High H2s Concentration, Xuan Li, Liza O'Moore, Yarong Song, Philp Bond, Zhiguo Yuan, Simeon Wilkie, Lucija Hanzic, Guangming Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
Concrete corrosion in sewers is primarily caused by H2S in sewer atmosphere. H2S concentration can vary from several ppm to hundreds of ppm in real sewers. Our understanding of sewer corrosion has increased dramatically in recent years, however, there is limited knowledge of the concrete corrosion at high H2S levels. This study examined the corrosion development in sewers with high H2S concentrations. Fresh concrete coupons, manufactured according to sewer pipe standards, were exposed to corrosive conditions in a pilot-scale gravity sewer system with gaseous H2S at 1100 ± 100 ppm. The corrosion process was continuously monitored by measuring the surface …
The Influence Of Sorption Pressure On Gas Diffusion In Coal Particles: An Experimental Study, Xin Yang, Gongda Wang, Junying Zhang, Ting X. Ren
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 …
Predicted Behavior Of Saturated Granular Waste Blended With Rubber Crumbs, Yujie Qi, Buddhima Indraratna, Matthew Richard Coop
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 …
Creep In Primary Consolidation With Rate Of Loading Approach, Gang Bi, Shua Ni, Dong Wang, Yeqiang Chen, Jianfei Wei, Wenzong Gong
Creep In Primary Consolidation With Rate Of Loading Approach, Gang Bi, Shua Ni, Dong Wang, Yeqiang Chen, Jianfei Wei, Wenzong Gong
Faculty of Engineering and Information Sciences - Papers: Part B
The debate on creep in primary consolidation is analysed with a power law model following an approach in which creep is considered as rate of loading. According to this approach, primary consolidation is one type of rate of loading. To verify this approach, two types of tests, standard oedometer test and oedometer test with drainage prevented, are conducted on three types of soils (two from NGES and the other from Port of Guangzhou). The result: creep exponents obtained from two kinds of tests agree well with each other. Moreover, the approach is further validated by tracking, for over 80 years, …
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
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 …
Interaction Between Nano-Voids And Migrating Grain Boundary By Molecular Dynamics Simulation, Liang Zhang, Yasushi Shibuta, Cheng Lu, Xiaoxu Huang
Interaction Between Nano-Voids And Migrating Grain Boundary By Molecular Dynamics Simulation, Liang Zhang, Yasushi Shibuta, Cheng Lu, Xiaoxu Huang
Faculty of Engineering and Information Sciences - Papers: Part B
Understanding the interaction between void and grain boundary (GB) is important to the design of radiation resistant materials by GB engineering and to achieve high quality metallurgical diffusion joining. In this study, the interaction between nano-voids and GBs has been systematically investigated by molecular dynamics simulations. The bicrystal Cu sample was used throughout the work, and the dynamic GB-void interaction was achieved by GB migration under shear deformation. Both high-angle GBs (Σ5 (310) GB, Σ5 (210) GB) and low-angle GBs (Σ37 (750) GB, Σ61 (650) GB) were investigated, and the effect of void size and temperature on the simulation result …
Phase Change Material Blind System For Double Skin Façade Integration: System Development And Thermal Performance Evaluation, Yilin Li, Jo Darkwa, Georgios Kokogiannakis, Weiguang Su
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 …
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
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.
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
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 …
Evaluation Of Organ Doses Following Prostate Treatment With Permanent Brachytherapy Seeds: A Geant4 Monte Carlo Simulation Study, M R. Fahmi, Nurul Hashikin, C H. Yeong, Susanna Guatelli, Kwanhoong Ng, Alessandra Malaroda, Anatoly B. Rosenfeld, Alan C. Perkins
Evaluation Of Organ Doses Following Prostate Treatment With Permanent Brachytherapy Seeds: A Geant4 Monte Carlo Simulation Study, M R. Fahmi, Nurul Hashikin, C H. Yeong, Susanna Guatelli, Kwanhoong Ng, Alessandra Malaroda, Anatoly B. Rosenfeld, Alan C. Perkins
Faculty of Engineering and Information Sciences - Papers: Part B
This study aimed to evaluate the absorbed doses received by the organs at risk (OARs) following prostate treatment with permanent Iodine-125 (125I) brachytherapy seeds. In order to simulate an enlarged abnormal prostate due to malignancy, the MIRD5 adult male anthropomorphic phantom (readily available in the Geant4 Monte Carlo package) was modified by increasing the prostate volume to 35 cm3. The permanent seeds were constructed with an outer cylindrical dimension of 4.5 mm (length) x 0.8 mm (diameter). The effects of various activity per seed (0.5, 0.6 and 0.8 mCi), number of seeds (62, 78, 94 and 110 seeds) and radionuclides, …
Experimental Electron-Detachment Cross Sections For Collisions Of O2- With N2 Molecules In The Energy Range 50-7000 Ev, M Mendes, C Guerra, A I. Lozano, D Rojo, J C. Oller, Paulo Limao-Vieira, Gustavo Garcia
Experimental Electron-Detachment Cross Sections For Collisions Of O2- With N2 Molecules In The Energy Range 50-7000 Ev, M Mendes, C Guerra, A I. Lozano, D Rojo, J C. Oller, Paulo Limao-Vieira, Gustavo Garcia
Faculty of Engineering and Information Sciences - Papers: Part B
An experimental setup has been implemented to obtain absolute total electron detachment cross sections and relative ionization cross sections in the energy range 50-7000 eV in gas-phase collisions between anionic beams and neutral molecular targets. The primary anionic beam (O2-) is produced through a pulsed hollow cathode discharge-induced plasma, deflected and focused towards the collision region where the molecular target is maintained at a well-known pressure. Electron detachment cross sections are measured from the attenuation of the O2- beam after interaction with N2 molecules confined in a gas cell. Negative and positive fragment ions produced during the collisions are extracted …
Comparison Of Butyric Acid Leaching Behaviors Of Zinc From Three Basic Oxygen Steelmaking Filter Cakes, Jingxiu Wang, Zhe Wang, Zhongzhi Zhang, Guangqing Zhang
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% …
Lattice Boltzmann Method Modeling Of Magnetic Water-Based Nanofluid Through A Permeable Three-Dimensional Enclosure, M Sheikholeslami, S Shehzad, Ahmad Shafee, F Abbasie, R Kandasamy, Zhixiong Li
Lattice Boltzmann Method Modeling Of Magnetic Water-Based Nanofluid Through A Permeable Three-Dimensional Enclosure, M Sheikholeslami, S Shehzad, Ahmad Shafee, F Abbasie, R Kandasamy, Zhixiong Li
Faculty of Engineering and Information Sciences - Papers: Part B
In this work, the mesoscopic theory is invoked to depict nanoparticle transportation through a porous cavity. Different amounts of Lorentz forces, Rayleigh number and permeability on the working fluid treatment have been examined. Al2O3-H2O is selected including the Brownian motion effect. Isokinetic, streamlines, and isotherms contours are various shapes of outputs. Results illustrate that the increase in magnetic forces lead to an increase in the conduction mode. Dispersing nanoparticles aids to increase the Hartmann number.
Preparation Of Al2o3 Hollow Microsphere Via Calcining Carbon Template And Its Adsorption Application, Ying Zhang, Xi Li
Preparation Of Al2o3 Hollow Microsphere Via Calcining Carbon Template And Its Adsorption Application, Ying Zhang, Xi Li
Faculty of Engineering and Information Sciences - Papers: Part B
Carbon microsphere was synthesized from glucose via hydrothermal method, and then alumina hollow microsphere was prepared using carbon template. At reaction time of 6 h, the carbon sphere displayed uniform diameter of 800 nm. After removal of carbon core during calcination, it obtained 600 nm of γ-Al2O3 hollow sphere with shell thickness of 80 nm and surface area of 186 m2/g. For adsorption of methylene blue, material exhibited adsorption capacity of 26.5 ± 1.2 mg/g, fitting well with Langmuir isotherm. It is demonstrated that calcining carbon template was an effective and facile approach to obtain …
On The Use Of Sprays To Intercept Airborne Embers During Wildfires, Alan Green, Nigel Kaye
On The Use Of Sprays To Intercept Airborne Embers During Wildfires, Alan Green, Nigel Kaye
Faculty of Engineering and Information Sciences - Papers: Part B
This technical note outlines an initial assessment of the feasibility of using water sprays to intercept and extinguish airborne embers, as a means to protect buildings during wildfires. An analytical model was developed to calculate the probability of inter-particle collisions within two intersecting streams of particles, and was then applied to a range of test cases involving embers and water droplets. Results from this simplified analysis indicated that water sprays could effectively protect buildings from 'ember attack' in this manner, but only when either: i) large water flow rates were used (in the order of 1 L s−1 per …
Removal Of Hg(Ii) In Aqueous Solutions Through Physical And Chemical Adsorption Principles, Mengdan Xia, Zhixin Chen, Yao Li, Chuanhua Li, Nasir M. Ahmad, Waqas A. Cheema, Shenmin Zhu
Removal Of Hg(Ii) In Aqueous Solutions Through Physical And Chemical Adsorption Principles, Mengdan Xia, Zhixin Chen, Yao Li, Chuanhua Li, Nasir M. Ahmad, Waqas A. Cheema, Shenmin Zhu
Faculty of Engineering and Information Sciences - Papers: Part B
Adsorption has been the focus of research on the treatment of heavy metal mercury pollution since it is among the most toxic heavy metals in existence. The US EPA has set a mandatory discharge limit of 10 μg Hg L-1 for wastewater and for drinking water a maximum accepted concentration of 1 μg Hg L-1. Physical adsorption and chemical adsorption are the two major mechanisms of adsorption methods used for mercury removal in aqueous sources. The recent decades' research progress is reviewed to elaborate varieties of adsorption materials ranging from materials with large surface area for physical …
In Situ Characterisation Of Mns Precipitation In High Carbon Steel, Yasuhiro Tanaka, Farshid Pahlevani, Suk Chun Moon, Rian J. Dippenaar, Veena Sahajwalla
In Situ Characterisation Of Mns Precipitation In High Carbon Steel, Yasuhiro Tanaka, Farshid Pahlevani, Suk Chun Moon, Rian J. Dippenaar, Veena Sahajwalla
Faculty of Engineering and Information Sciences - Papers: Part B
Manganese sulphide (MnS) is one of the major non-metallic inclusions in steel with huge impact on steel property. In the case of high carbon steel, due to higher sulphur content and its brittleness, controlling MnS formation is one of the main issues. MnS has a complicated precipitation mechanism during solidification in liquid and solid steel and at the interface with oxide inclusions. Higher sulphur content, lower melting point and different oxide inclusions in high carbon steel will cause MnS precipitation at different stages. In this study, different stages of MnS precipitation from liquid and/or solid in high carbon steel and …
Time Series Analysis Of Online Public Opinions In Colleges And Universities And Its Sustainability, Wei He, Yuan Fang, Reza Malekian, Zhixiong Li
Time Series Analysis Of Online Public Opinions In Colleges And Universities And Its Sustainability, Wei He, Yuan Fang, Reza Malekian, Zhixiong Li
Faculty of Engineering and Information Sciences - Papers: Part B
With the quick penetration of Internet applications, online media have become an important carrier of public opinions. The opinions and comments expressed by young college students-one of the most active netizen groups-on the Internet have turned out to be an essential part of the online public opinions in colleges and universities. However, the existing systems generally employ simple statistical methods to analyze the effect of online public opinions on the image and reputation development of colleges and universities without taking account of other factors, such as the hotness characteristics of online public opinions and semantic information. Therefore, on the basis …