6 research outputs found
Design of contraction-expansion microchannels for particle-sorting with five-micrometer resolution
No full textEffects of Shear and Extensional Stresses on Cells: Investigation in a Spiral Microchannel and Contraction-Expansion Arrays
No full textOn Classification of Water-in-Oil and Oil-in-Water Droplet Generation Regimes in Flow-Focusing Microfluidic Devices
No full textThe objective of this research work is to propose a phase diagram that can be used to find a proper operating condition for generating droplets of different types. It is found that the phase diagram of QR versus CaD can effectively classify the droplet generation into three vivid regimes: dripping, jetting and tubing. For the dripping regime, its operating condition is in the range of either CaD < 10−4 and QR < 50 or 10−3 < CaD < 10−4 and QR < 1. For the jetting regime, its operating condition is in the range of either CaD < 1.35 × 10−2 and QR > 100 or CaD > 1.35 × 10−2 and QR > 1. For the tubing regime, its operating condition is in the range of CaD > 1.35 × 10−2 and QR < 1
L005 Giralia-Bullara Seismic reflection survey, WA, 1951
No full textMaintenance and Update Frequency: asNeededStatement: The Giralia anticline was mapped in Mesozoic and Tertiary rocks in the North-West basin. This is basin lines in the North-West District of Western Australia between the cost and the 116th east meridian, and is otherwise bounded by latitudes 21.5 South and 26.5 South. Geologists of the BMR have been carrying out geological mapping in the basin during 1948-1951. The existence of anticlinal structures in the Mesozoic and Tertiary rocks has been known for many years but they have never been mapped in detail. Therefore, a seismic reflection traverse on the portion of Giralia anticline was conducted.A seismic reflection traverse on portion of the Giralia anticline was conducted by the Bereau of Mineral Resources (BMR). This work constitutes a part of a general programme of investigation which the BMR, Geology and Geophysics, has been carrying out on Permit areas held by Ampol Petroleum Ltd. in this area. The purpose of the survey is to idenfy the proposed geology structure in this region based on the previous geology surveys
Vehicle Connectivity and Automation: A Sibling Relationship
Get PDFThis is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the originalpublication in this journal is cited, in accordance with accepted academic practice.No use, distribution or reproduction is permitted which does not comply with theseterms.The evolution of scientific advances has often been characterized by the amalgamation of two or more technologies. With respect to vehicle connectivity and automation, recent literature suggests that these two emerging transportation technologies can and will jointly and profoundly shape the future of transportation. However, it is not certain how the individual and synergistic benefits to be earned from these technologies is related to their prevailing levels of development. As such, it may be considered useful to revisit the primary concepts of automation and connectivity, and to identify any current and expected future synergies between them. Doing this can help generate knowledge that could be used to justify investments related to transportation systems connectivity and automation. In this discussion paper, we attempt to address some of these issues. The paper first reviews the technological concepts of systems automation and systems connectivity, and how they prospectively, from an individual and collective perspective, impact road transportation efficiency and safety. The paper also discusses the separate and common benefits of connectivity and automation, and their possible holistic effects in terms of these benefits where they overlap. The paper suggests that at the current time, the sibling relationship seems to be lopsided: vehicle connectivity has immense potential to enhance vehicle automation. Automation, on the other hand, may not significantly promote vehicle connectivity directly, at least not in the short term but possibly in the long term. The paper argues that future trends regarding market adoption of these two technologies and their relative pace of advancement or regulation, will shape the future synergies between them
Mechanism of Reducing Local Flow Velocity Using Obstacle Trenches in Microfluidics
Get PDFTrapping efficiency in microwell technique is influenced by both microwell geometry and flow velocity. At higher flow velocity, microplastics tend to flow over microwells resulting in reduced trapping efficiency. Therefore, decreasing flow velocity to enhance trapping efficiency is important. This research introduces triangular obstacle trenches in front of the microwells to reduce local flow velocity leading to the improvement of trapping efficiency. The simulation results show that two mechanisms must occur concurrently to effectively reduce local flow velocity. They are the spreading of streamlines from the apex to the back of triangular trench, and the suitable recirculation inside the trench. In this study, the obstacle trench has dimensions of 600 µm on each side with a depth of 300 µm while the square microwell measured 1,000 µm on each side with a depth of 600 µm. The flow rate was at 0.3 ml/min. Experiments confirmed that the use of triangular obstacle trenches significantly enhanced trapping efficiency by 30 times compared to the case without trenches
