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Articles 1 - 14 of 14
Full-Text Articles in Physical Sciences and Mathematics
Wildlife Of The Gold Coast Wetlands, Shelley Burgin, Daryl Mcphee
Wildlife Of The Gold Coast Wetlands, Shelley Burgin, Daryl Mcphee
Daryl McPhee
Extract: Water in the landscape of the Gold Coast is dominated by marine and marine-influenced systems. The most obvious are the in-shore waters abutting the Gold Coast's world-famous beaches and estuaries. Little more than a glance at a map of the city also reveals the extensive canal estates built to take advantage of the marine waters, and indeed expand them. The waters of the rivers mix with the ocean's waters in the estuaries. These ecosystems are valuable nursery areas for marine wildlife, particularly, but not restricted to, fishes of commercial and recreational value.
The Impact On The Gold Coast's Terrestrial Environments, Tor Hundloe
The Impact On The Gold Coast's Terrestrial Environments, Tor Hundloe
Tor Hundloe
Extract: We tend to think of the Gold Coast as a water environment. As tourists know, it sits on the shore of the vast Pacific Ocean. That is why most come. They have seen the magnificent photographs. If not perched on flattened dunes looking east to the ocean, a significant part of the urban Gold Coast environment is located around natural and human-made water environments. Of these we will say little here, other than to note their extent. The focus of this chapter is the city's terrestrial environments, reporting on and ultimately, after describing the environments, discussing what proportion of …
Optical Sensing System Based On Wireless Paired Emitter Detector Diode Device And Ionogels For Lab-On-A-Disc Water Quality Analysis, Monika Czugala, Robert Gorkin Iii, Thomas Phelan, Jennifer Gaughran, Vincenzo Curto, Jens Ducree, Dermot Diamond, Fernando Benito-Lopez
Optical Sensing System Based On Wireless Paired Emitter Detector Diode Device And Ionogels For Lab-On-A-Disc Water Quality Analysis, Monika Czugala, Robert Gorkin Iii, Thomas Phelan, Jennifer Gaughran, Vincenzo Curto, Jens Ducree, Dermot Diamond, Fernando Benito-Lopez
Robert Gorkin III
This work describes the first use of a wireless paired emitter detector diode device (PEDD) as an optical sensor for water quality monitoring in a lab-on-a-disc device. The microfluidic platform, based on an ionogel sensing area combined with a low-cost optical sensor, is applied for quantitative pH and qualitative turbidity monitoring of water samples at point-of-need. The autonomous capabilities of the PEDD system, combined with the portability and wireless communication of the full device, provide the flexibility needed for on-site water testing. Water samples from local fresh and brackish sources were successfully analysed using the device, showing very good correlation …
The Potlib Library Of Potential Energy Functions And A New Global Analytic Pes For The H + O2 Reaction, Ronald Duchovic
The Potlib Library Of Potential Energy Functions And A New Global Analytic Pes For The H + O2 Reaction, Ronald Duchovic
Ronald J. Duchovic
No abstract provided.
Oxygen Exchange During The Reaction Of Pocl3 And Water, Robert Clark, Robert Morrison, Andrew Thomas, Rebeca Alvarez, Paul Milham
Oxygen Exchange During The Reaction Of Pocl3 And Water, Robert Clark, Robert Morrison, Andrew Thomas, Rebeca Alvarez, Paul Milham
Robert Clark
To investigate O exchange during the reaction of POCl3 and water, natural abundance POCl3 was reacted with water highly enriched in 18O, and the resulting H3PO4 was isolated as KH2PO4. This reaction was conducted with and without tetrahydrofuran (THF) as a solvent, and was controlled in THF and violent in its absence. Approximately 5 x 10-4M aqueous solutions of the KH2PO4 were analyzed using electrospray ionization mass spectrometry, to estimate the proportions of the mass-clumped 16,17,18O isotope analogues of [H2PO4] -. During analysis, ~29% of [H2PO4] - dehydrated to [PO3]-, for which the proportions of the O isotope analogues were …
Combining Mbr And Nf/Ro Membrane Filtration For The Removal Of Trace Organics In Indirect Potable Water Reuse Applications, William Price, Nichanan Tadkaew, Long Nghiem, Stuart Khan, Abdulhakeem Alturki, James Mcdonald
Combining Mbr And Nf/Ro Membrane Filtration For The Removal Of Trace Organics In Indirect Potable Water Reuse Applications, William Price, Nichanan Tadkaew, Long Nghiem, Stuart Khan, Abdulhakeem Alturki, James Mcdonald
Long D Nghiem
The aim of this study was to demonstrate the complementarities of combining membrane bioreactor (MBR) treatment with nanofiltration (NF) or reverse osmosis (RO) membrane filtration for the removal of trace organic contaminants for potential indirect potable water recycling applications. Four commercially available NF/RO membranes, namely NF270, NF90, BW30 and ESPA2, were selected for this investigation. Challenge tests were conducted with 40 trace organic compounds at concentrations of approximately 2 ng/L in initial wastewater solutions using a laboratory scaleMBRsystem and a cross-flow NF/RO rig. The results suggest that the MBR system effectively removes hydrophobic and biodegradable trace organic compounds. The adsorption …
Theoretical Probing Of The Phenomenon Of The Formation Of The Outermost Surface Layer Of A Multi-Component Particle, And The Surface Chemical Composition After The Rapid Removal Of Water In Spray Drying, Mark Nelson, Harvinder Sidhu, X.D. Chen
Theoretical Probing Of The Phenomenon Of The Formation Of The Outermost Surface Layer Of A Multi-Component Particle, And The Surface Chemical Composition After The Rapid Removal Of Water In Spray Drying, Mark Nelson, Harvinder Sidhu, X.D. Chen
Associate Professor Mark Nelson
Spray drying is a primary process for the manufacture of powders, which satisfy a vast array of societal demands in the areas of nutrition, health and medicine. The functionality of a spray-dried product begins with its incorporation into water (wetting followed by dispersion) Therefore, as its surface chemical composition and structure determine its first contact with water (that is, its hydrophilic nature), these are of prime concern. Laboratory studies on this first layer, which is in the order of several nm in depth from the surface, have been extensive but there is still a lack of a fundamental quantitative explanation …
Symmetry Solutions For Transient Solute Transport In Unsaturated Soils With Realistic Water Profile, Maureen Edwards, R Joel Moitsheki, Philip Broadbridge
Symmetry Solutions For Transient Solute Transport In Unsaturated Soils With Realistic Water Profile, Maureen Edwards, R Joel Moitsheki, Philip Broadbridge
Dr Maureen Edwards
No abstract provided.
Group Invariant Solutions For Two Dimensional Solute Transport Under Realistic Water Flows, Maureen Edwards, R Joel Moitsheki, Philip Broadbridge
Group Invariant Solutions For Two Dimensional Solute Transport Under Realistic Water Flows, Maureen Edwards, R Joel Moitsheki, Philip Broadbridge
Dr Maureen Edwards
No abstract provided.
Fire, Wind And Water: Social Networks In Natural Disasters, Mark Freeman
Fire, Wind And Water: Social Networks In Natural Disasters, Mark Freeman
Dr Mark Freeman
No abstract provided.
Modelling Adsorption Of A Water Molecule Into Various Pore Structures Of Silica Gel, Duangkamon Baowan, Ngamta Thamwattana
Modelling Adsorption Of A Water Molecule Into Various Pore Structures Of Silica Gel, Duangkamon Baowan, Ngamta Thamwattana
Dr Ngamta Thamwattana
Silica gel is widely used in commercial applications as a water adsorbent due to its properties including hydrothermally stable, high water sorption capacity, low regeneration temperature, low cost and wide range of pore diameters. Since the water sorption capacity of silica gel strongly depends on the pore size and structure, which can be controlled during synthesis, this paper study the effect of pore shapes and dimensions of silica gel upon the adsorption of a water molecule aiming at maximising the water sorption capacity. In particular, we consider three types of pore structures, namely cylindrical, square prismatic and conical pores. On …
Small Town Water Governance In Developing Countries: The Uncertainty Curse, Magnus Moglia, Pascal Perez, Stewart Burn
Small Town Water Governance In Developing Countries: The Uncertainty Curse, Magnus Moglia, Pascal Perez, Stewart Burn
Professor Pascal Perez
lack of consideration of local circumstances and process requirements, and in particular inadequate involvement of affected stakeholders as well as inadequate cross-sectorial coordination. This is not surprising given poor organizational memory combined with decisions being made under time pressure and strict deadlines combined with little adaptive capacity. Additionally, information about the importance of process requirements and engagement is qualitative and as such is unfortunately often given secondary importance. To address this, we suggest a Risk assessment component as part of the project design phase based on Bayesian Networks (BNs) utilizing expert and local knowledge. This not only improves organizational memory …
Participatory Assessment Of Water Developments In An Atoll Town, Magnus Moglia, Pascal Perez
Participatory Assessment Of Water Developments In An Atoll Town, Magnus Moglia, Pascal Perez
Professor Pascal Perez
Water development projects often fail, which represents a poor outcome given the limited progress against the Millennium Development Goals in providing people with adequate water and sanitation services. This may not be surprising given that water management has been identified as being in the complex system domain. According to the Cynefin framework, many traditional approaches are not suitable; but it suggests an approach based on the methods of probe, sense and respond. In line with this general framework, a participatory assessment methodology has been used to explore experiences in the atoll town of Tarawa in the Republic of Kiribati. After …
Oxygen Exchange During The Reaction Of Pocl3 And Water, Robert Clark, Robert Morrison, Andrew Thomas, Rebeca Alvarez, Paul Milham
Oxygen Exchange During The Reaction Of Pocl3 And Water, Robert Clark, Robert Morrison, Andrew Thomas, Rebeca Alvarez, Paul Milham
Associate Professor Robert Graham Clark
To investigate O exchange during the reaction of POCl3 and water, natural abundance POCl3 was reacted with water highly enriched in 18O, and the resulting H3PO4 was isolated as KH2PO4. This reaction was conducted with and without tetrahydrofuran (THF) as a solvent, and was controlled in THF and violent in its absence. Approximately 5 x 10-4M aqueous solutions of the KH2PO4 were analyzed using electrospray ionization mass spectrometry, to estimate the proportions of the mass-clumped 16,17,18O isotope analogues of [H2PO4] -. During analysis, ~29% of [H2PO4] - dehydrated to [PO3]-, for which the proportions of the O isotope analogues were …