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Articles 1 - 8 of 8
Full-Text Articles in Engineering
Hydrogen Bonding Versus Halogen Bonding: Spectroscopic Investigation Of Gas-Phase Complexes Involving Bromide And Chloromethanes, Hayden T. Robinson, Christian T. Haakansson, Timothy R. Corkish, Peter D. Watson, Allan J. Mckinley, Duncan A. Wild
Hydrogen Bonding Versus Halogen Bonding: Spectroscopic Investigation Of Gas-Phase Complexes Involving Bromide And Chloromethanes, Hayden T. Robinson, Christian T. Haakansson, Timothy R. Corkish, Peter D. Watson, Allan J. Mckinley, Duncan A. Wild
Research outputs 2022 to 2026
Hydrogen bonding and halogen bonding are important non-covalent interactions that are known to occur in large molecular systems, such as in proteins and crystal structures. Although these interactions are important on a large scale, studying hydrogen and halogen bonding in small, gas-phase chemical species allows for the binding strengths to be determined and compared at a fundamental level. In this study, anion photoelectron spectra are presented for the gas-phase complexes involving bromide and the four chloromethanes, CH3Cl, CH2Cl2, CHCl3, and CCl4. The stabilisation energy and electron binding energy associated with each complex are determined experimentally, and the spectra are rationalised …
Bowel Sounds Identification And Migrating Motor Complex Detection With Low-Cost Piezoelectric Acoustic Sensing Device, Xuhao Du, Gary Allwood, Katherine Mary Webberley, Adam Osseiran, Barry J. Marshall
Bowel Sounds Identification And Migrating Motor Complex Detection With Low-Cost Piezoelectric Acoustic Sensing Device, Xuhao Du, Gary Allwood, Katherine Mary Webberley, Adam Osseiran, Barry J. Marshall
Research outputs 2014 to 2021
Interpretation of bowel sounds (BS) provides a convenient and non-invasive technique to aid in the diagnosis of gastrointestinal (GI) conditions. However, the approach’s potential is limited by variation between BS and their irregular occurrence. A short, manual auscultation is sufficient to aid in diagnosis of only a few conditions. A longer recording has the potential to unlock additional understanding of GI physiology and clinical utility. In this paper, a low-cost and straightforward piezoelectric acoustic sensing device was designed and used for long BS recordings. The migrating motor complex (MMC) cycle was detected using this device and the sound index as …
Numerical Modeling Of Virus Transport Through Unsaturated Porous Media, Kandala Rajsekhar, Pramod Kumar Sharma, Sanjay K. Shukla
Numerical Modeling Of Virus Transport Through Unsaturated Porous Media, Kandala Rajsekhar, Pramod Kumar Sharma, Sanjay K. Shukla
Research outputs 2014 to 2021
This paper describes the movement of virus in one-dimensional unsaturated porous media. The governing virus transport equations consider the inactivation in liquid phase, liquid–solid interface, air–liquid interface, and sorption in both liquid–solid and air–liquid interfaces. Finite-volume method has been used for solving the advection and dispersion processes of the virus transport equation. The effects of transport parameters on virus concentration profiles have been investigated for virus present in liquid phase, adsorbed liquid–solid and liquid–air phases. The results show that the movement of viruses in three phases is affected by soil moisture, inactivation rate, pore velocity, and mass transfer coefficients. It …
A Review Of Current Neuromorphic Approaches For Vision, Auditory, And Olfactory Sensors, Anup Vanarse, Adam Osseiran, Alexander Rassau
A Review Of Current Neuromorphic Approaches For Vision, Auditory, And Olfactory Sensors, Anup Vanarse, Adam Osseiran, Alexander Rassau
Research outputs 2014 to 2021
Conventional vision, auditory, and olfactory sensors generate large volumes of redundant data and as a result tend to consume excessive power. To address these shortcomings, neuromorphic sensors have been developed. These sensors mimic the neuro-biological architecture of sensory organs using aVLSI (analog Very Large Scale Integration) and generate asynchronous spiking output that represents sensing information in ways that are similar to neural signals. This allows for much lower power consumption due to an ability to extract useful sensory information from sparse captured data. The foundation for research in neuromorphic sensors was laid more than two decades ago, but recent developments …
A Rapid Co-Culture Stamping Device For Studying Intercellular Communication, Amin Hassanzadeh-Barforoushi, Jonathan Shemesh, Nona Farbehi, Mohsen Asadnia, Guan H. Yeoh, Richard P. Harvey, Robert E. Nordon, Majid E. Warkiani
A Rapid Co-Culture Stamping Device For Studying Intercellular Communication, Amin Hassanzadeh-Barforoushi, Jonathan Shemesh, Nona Farbehi, Mohsen Asadnia, Guan H. Yeoh, Richard P. Harvey, Robert E. Nordon, Majid E. Warkiani
Research outputs 2014 to 2021
Regulation of tissue development and repair depends on communication between neighbouring cells. Recent advances in cell micro-contact printing and microfluidics have facilitated the in-vitro study of homotypic and heterotypic cell-cell interaction. Nonetheless, these techniques are still complicated to perform and as a result, are seldom used by biologists. We report here development of a temporarily sealed microfluidic stamping device which utilizes a novel valve design for patterning two adherent cell lines with well-defined interlacing configurations to study cell-cell interactions. We demonstrate post-stamping cell viability of > 95%, the stamping of multiple adherent cell types, and the ability to control the seeded …
Influence Of Nb On The Β → Α″ Martensitic Phase Transformation And Properties Of The Newly Designed Ti-Fe-Nb Alloys, Shima Ehtemam-Haghighi, Yujing Liu, Guanghui Cao, Lai-Chang Zhang
Influence Of Nb On The Β → Α″ Martensitic Phase Transformation And Properties Of The Newly Designed Ti-Fe-Nb Alloys, Shima Ehtemam-Haghighi, Yujing Liu, Guanghui Cao, Lai-Chang Zhang
Research outputs 2014 to 2021
A series of Ti-7Fe-xNb (x = 0, 1, 4, 6, 9, 11 wt.%) alloys was designed and cast to investigate the β → α″ martensitic phase transformation, β phase stability, the resulting microstructure and mechanical properties. Phase analysis revealed that only Ti-7Fe-11Nb alloy shows a single body-centred cubic β phase microstructure while the others are comprised of β and orthorhombic α″ phases. Moreover, Nb addition up to 11 wt.% enhances the stability and volume fraction of β phase in the microstructure, hence reducing the propensity of the alloy system to form α″ phase during quenching. Compressive yield strength and hardness …
Synergistic Toughening Of Hard, Nacre-Mimetic Mosi2 Coatings By Self-Assembled Hierarchical Structure, Jiang Xu, Xiaoli Zhao, Paul Munroe, Zonghan Xie
Synergistic Toughening Of Hard, Nacre-Mimetic Mosi2 Coatings By Self-Assembled Hierarchical Structure, Jiang Xu, Xiaoli Zhao, Paul Munroe, Zonghan Xie
Research outputs 2014 to 2021
Like many other intermetallic materials, MoSi2 coatings are typically hard, but prone to catastrophic failure due to their low toughness at ambient temperature. In this paper, a self-assembled hierarchical structure that closely resembles that of nacre (i.e., mother of pearl) was developed in a MoSi2 -based coating through a simple, yet cost-effective, depostion technique. The newly formed coating is tough and can withstand multiple indentations at high loads. Key design features responsible for this remarkable outcome were identified. They include a functionally graded multilayer featuring elastic modulus oscillation, varying sublayer thickness and a columnar structure that are able to attenuate …
Characterizing The Resolvability Of Real Superluminescent Diode Sources For Application To Optical Coherence Tomography Using A Low Coherence Interferometry Model, Paul V. Jansz, Steven Richardson, Graham Wild, Steven Hinckley
Characterizing The Resolvability Of Real Superluminescent Diode Sources For Application To Optical Coherence Tomography Using A Low Coherence Interferometry Model, Paul V. Jansz, Steven Richardson, Graham Wild, Steven Hinckley
Research outputs 2014 to 2021
The axial resolution is a critical parameter in determining whether optical coherent tomography (OCT) can be used to resolve specific features in a sample image. Typically, measures of resolution have been attributed to the light source characteristics only, including the coherence length and the point spread function (PSF) width of the OCT light sources. The need to cost effectively visualize the generated PSF and OCT cross-correlated interferogram (A-scan) using many OCT light sources have led to the extrinsic evolution of the OCT simulation model presented. This research indicated that empirical resolution in vivo, as well as depending on the light …