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Articles 451 - 457 of 457
Full-Text Articles in Social and Behavioral Sciences
Fatigue Properties Of Intact Sandstone In Pre And Post-Failure And Its Implication To Vibratory Rock Cutting, M N. Badge, Shivakumar Karekal
Fatigue Properties Of Intact Sandstone In Pre And Post-Failure And Its Implication To Vibratory Rock Cutting, M N. Badge, Shivakumar Karekal
Faculty of Engineering and Information Sciences - Papers: Part A
The pre-and post-failure fatigue properties of intact sandstone subjected to uni-axial cyclical loading in the laboratory is presented with its possible implication to vibratory rock cutting. The fatigue results subjected to sinusoidal, ramp and square waveforms at cyclic loading frequency of 5 Hz and peak amplitude of 0.05 mm is discussed herewith. It is observed that fatigue behaviour is a function of the dynamic energy of the load and the shape of the waveform. From the presented results, the practical significance of the behaviour of rock and rock masses within the excavation systems subjected to cyclic loads, especially in the …
Antibacterial Performance Of Bovine Lactoferrin-Fish Gelatine Electrospun Membranes, J Padrão, Raul Machado, Margarida Casal, Senentxu Lanceros-Méndez, L R. Rodrigues, F Dourado, Vitor Sencadas
Antibacterial Performance Of Bovine Lactoferrin-Fish Gelatine Electrospun Membranes, J Padrão, Raul Machado, Margarida Casal, Senentxu Lanceros-Méndez, L R. Rodrigues, F Dourado, Vitor Sencadas
Faculty of Engineering and Information Sciences - Papers: Part A
The increase of antibiotic resistant microorganisms urged the development and synthesis of novel antimicrobial biomaterials to be employed in a broad range of applications, ranging from food packaging to medical devices. This work describes the production and characterization of a protein-based electrospun fibrous membranes bearing antimicrobial properties. Its composition is exclusively comprised of proteins, with fish gelatine as structural matrix and bovine lactoferrin (bLF) as the active antimicrobial agent. The bLF bactericidal effect was determined against clinical isolates of Escherichia coli and Staphylococcus aureus through microdilution assays. Two distinctive methods were used to incorporate bLF into the fish gelatine nanofibres: …
The Role Of Pyrimidine And Water As Underlying Molecular Constituents For Describing Radiation Damage In Living Tissue: A Comparative Study, Martina C. Fuss, L Ellis-Gibbings, Darryl B. Jones, M J. Brunger, Francisco Blanco, A Muñoz, Paulo Limao-Vieira, Gustavo Garcia
The Role Of Pyrimidine And Water As Underlying Molecular Constituents For Describing Radiation Damage In Living Tissue: A Comparative Study, Martina C. Fuss, L Ellis-Gibbings, Darryl B. Jones, M J. Brunger, Francisco Blanco, A Muñoz, Paulo Limao-Vieira, Gustavo Garcia
Faculty of Engineering and Information Sciences - Papers: Part A
Water is often used as the medium for characterizing the effects of radiation on living tissue. However, in this study, charged-particle track simulations are employed to quantify the induced physicochemical and potential biological implications when a primary ionising particle with energy 10 keV strikes a medium made up entirely of water or pyrimidine. Note that pyrimidine was chosen as the DNA/RNA bases cytosine, thymine, and uracil can be considered pyrimidine derivatives. This study aims to assess the influence of the choice of medium on the charged-particle transport, and identify how appropriate it is to use water as the default medium …
A Vibrotactilve And Plantar Force Measurement Based Biofeedback System: Paving The Way Towards Wearable Devices Improving Balance, Christina Ma, Anson Wan, Duo Wong, Yong-Ping Zheng, Winson Lee
A Vibrotactilve And Plantar Force Measurement Based Biofeedback System: Paving The Way Towards Wearable Devices Improving Balance, Christina Ma, Anson Wan, Duo Wong, Yong-Ping Zheng, Winson Lee
Faculty of Engineering and Information Sciences - Papers: Part A
Although biofeedback systems have been used to improve balance with success, they were confined to hospital training applications. Little attempt has been made to investigate the use of in-shoe plantar force measurement and wireless technology to turn hospital training biofeedback systems into wearable devices. This research developed a wearable biofeedback system which detects body sway by analyzing the plantar force and provides users with the corresponding haptic cues. The effects of this system were evaluated in thirty young and elderly subjects with simulated reduced foot sensation. Subjects performed a Romberg test under three conditions: (1) no socks, system turned-off; (2) …
Convexity Estimates For Surfaces Moving By Curvature Functions, Ben Andrews, Mat Langford, James A. Mccoy
Convexity Estimates For Surfaces Moving By Curvature Functions, Ben Andrews, Mat Langford, James A. Mccoy
Faculty of Engineering and Information Sciences - Papers: Part A
We consider the evolution of compact surfaces by fully nonlinear, parabolic curvature ows for which the normal speed is given by a smooth, degree one homogeneous function of the principal curvatures of the evolving surface. Under no further restrictions on the speed function, we prove that initial surfaces on which the speed is positive become weakly convex at a singularity of the flow. This generalises the corresponding result [26] of Huisken and Sinestrari for the mean curvature ow to the largest possible class of degree one homogeneous surface flows.
Characterization Of Smear Zone Caused By Mandrel Action, Buddhima Indraratna, Cholachat Rujikiatkamjorn, Made Ardana
Characterization Of Smear Zone Caused By Mandrel Action, Buddhima Indraratna, Cholachat Rujikiatkamjorn, Made Ardana
Faculty of Engineering and Information Sciences - Papers: Part A
In this study, the smear zone due to vertical drain installation is studied using a large, in situ sample to capture the realistic characteristics of the smear zone in relation to the in situ soil structure. The smear zone extent for Bulli clay (New South Wales, Australia) is quantified on the basis of normalised permeability and the reduction in the water content prior to consolidation. The permeability and compressibility of the soil are used to determine the extent to which the soil surrounding the PVD had become disturbed. In laboratory testing, the soil consolidation behavior due to a prefabricated vertical …
Bridge Deterioration Modeling By Markov Chain Monte Carlo (Mcmc) Simulation Method, N.K. Walgama Wellalage, Tieling Zhang, Richard Dwight, Khaled El-Akruti
Bridge Deterioration Modeling By Markov Chain Monte Carlo (Mcmc) Simulation Method, N.K. Walgama Wellalage, Tieling Zhang, Richard Dwight, Khaled El-Akruti
Faculty of Engineering and Information Sciences - Papers: Part A
There are over 10 thousands rail bridges in Australia that were made of different materials and constructed at different years. Managing thousands of bridges has become a real challenge for rail bridge engineers without having a systematic approach for decision making. Developing best suitable deterioration models is essential in order to implement a comprehensive Bridge Management System (BMS). In State Based Markov Deterioration (SBMD) modeling, the main task is to estimate Transition Probability Matrixes (TPMs). In this study, Markov Chain Monte Carlo (MCMC) simulation method is utilized to estimate TPMs of railway bridge elements by overcoming some limitations of conventional …