Outputs (437)

Permeability Evolution in Variably Glassy Basaltic Andesites Measured Under Magmatic Conditions (2017)
Journal Article

Heat from inflowing magma may act to seal permeable networks that assist passive outgassing at volcanic conduit margins and in overlying domes, reducing the efficiency of overpressure dissipation. Here we present a study of the evolution of permeabil... Read More about Permeability Evolution in Variably Glassy Basaltic Andesites Measured Under Magmatic Conditions.

Wetting and Spreading of Molten Volcanic Ash in Jet Engines (2017)
Journal Article

A major hazard to jet engines posed by volcanic ash is linked to the wetting and spreading of molten ash droplets on engine component surfaces. Here, using the sessile drop method, we study the evolution of the wettability and spreading of volcanic a... Read More about Wetting and Spreading of Molten Volcanic Ash in Jet Engines.

Ash aggregation enhanced by deposition and redistribution of salt on the surface of volcanic ash in eruption plumes (2017)
Journal Article

Interactions with volcanic gases in eruption plumes produce soluble salt deposits on the surface of volcanic ash. While it has been postulated that saturation-driven precipitation of salts following the dissolution of ash surfaces by condensed acidic... Read More about Ash aggregation enhanced by deposition and redistribution of salt on the surface of volcanic ash in eruption plumes.

Evolution of Vocabulary in the Poetry of Sylvia Plath (2016)
Journal Article

In this study, we provide a quantitative analysis of the temporal evolution of word choice across the career of Sylvia Plath, a poet who suffered from mental illness, which culminated in her suicide. Her work provides an excellent case study for temp... Read More about Evolution of Vocabulary in the Poetry of Sylvia Plath.

Exact integration of the unsteady incompressible Navier-Stokes equations, gauge criteria, and applications (2018)
Journal Article

An exact first integral of the full, unsteady, incompressible Navier-Stokes equations is achieved in its most general form via the introduction of a tensor potential and parallels drawn with Maxwell’s theory. Subsequent to this gauge freedoms are exp... Read More about Exact integration of the unsteady incompressible Navier-Stokes equations, gauge criteria, and applications.

Universal scaling of fluid permeability during volcanic welding and sediment diagenesis (2016)
Journal Article

In sedimentary basins and volcanic edifices, granular materials undergo densification that results in a decrease of porosity and permeability. Understanding the link between porosity and permeability is central to predicting fluid migration in the se... Read More about Universal scaling of fluid permeability during volcanic welding and sediment diagenesis.

Surface tension driven processes densify and retain permeability in magma and lava (2015)
Journal Article

We offer new insights into how an explosive eruption can transition into an effusive eruption. Magma containing >0.2 wt% dissolved water has the potential to vesiculate to a porosity in excess of 80 vol.% at atmospheric pressure. Thus all magmas cont... Read More about Surface tension driven processes densify and retain permeability in magma and lava.

Timescales for permeability reduction and strength recovery in densifying magma (2015)
Journal Article

Transitions between effusive and explosive behaviour are routine for many active volcanoes. The permeability of the system, thought to help regulate eruption style, is likely therefore in a state of constant change. Viscous densification of conduit m... Read More about Timescales for permeability reduction and strength recovery in densifying magma.

Cristobalite in the 2011–2012 Cordón Caulle eruption (Chile) (2015)
Journal Article

Cristobalite is a low-pressure high-temperature polymorph of SiO2 found in many volcanic rocks. Its volcanogenic formation has received attention because (1) pure particulate cristobalite can be toxic when inhaled, and its dispersal in volcanic ash i... Read More about Cristobalite in the 2011–2012 Cordón Caulle eruption (Chile).

Fusion characteristics of volcanic ash relevant to aviation hazards (2014)
Journal Article

The fusion dynamics of volcanic ash strongly impacts deposition in hot parts of jet engines. In this study, we investigate the sintering behavior of volcanic ash using natural ash of intermediate composition, erupted in 2012 at Santiaguito Volcano, G... Read More about Fusion characteristics of volcanic ash relevant to aviation hazards.

Structures of a Clathrate Hydrate Former, Inhibitor, and Synergist in Water (2018)
Journal Article

SANS studies are reported for aqueous THF at the 1:17 clathrate hydrate-forming composition and on aqueous solutions of the synergist 2-butoxyethanol. Addition of the clathrate hydrate inhibitor polyvinylcaprolactam and a dimeric model compound, 1,3-... Read More about Structures of a Clathrate Hydrate Former, Inhibitor, and Synergist in Water.

Disclosing the temperature of columnar jointing in lavas (2018)
Journal Article

Columnar joints form by cracking during cooling-induced contraction of lava, allowing hydrothermal fluid circulation. A lack of direct observations of their formation has led to ambiguity about the temperature window of jointing and its impact on flu... Read More about Disclosing the temperature of columnar jointing in lavas.

Dealing with numerical noise in CFD-based design optimization (2014)
Journal Article

Edge-Induced Shear Banding in Entangled Polymeric Fluids (2018)
Journal Article

Despite decades of research, the question of whether solutions and melts of highly entangled polymers exhibit shear banding as their steady state response to a steadily imposed shear flow remains controversial. From a theoretical viewpoint, an import... Read More about Edge-Induced Shear Banding in Entangled Polymeric Fluids.

High thermal stability, pH responsive organogels of 2H-benzo[d]1,2,3-triazole derivatives as pharmaceutical crystallization media (2018)
Journal Article

2H-Benzo[d]1,2,3-triazole derivatives with a range of chemical functionalities showed significant organogel formation, particularly bis-amide derivative 4e which gave robust thermally stable gels, in a range of solvents down to 0.1 wt%. The gelators... Read More about High thermal stability, pH responsive organogels of 2H-benzo[d]1,2,3-triazole derivatives as pharmaceutical crystallization media.

Controlled Structure Evolution of Graphene Networks in Polymer Composites (2018)
Journal Article

Exploiting graphene’s exceptional physical properties in polymer composites is a significant challenge because of the difficulty in controlling the graphene conformation and dispersion. Reliable processing of graphene polymer composites with uniform... Read More about Controlled Structure Evolution of Graphene Networks in Polymer Composites.

Tailored Supramolecular Gel and Microemulsion Crystallization Strategies – is Isoniazid Really Monomorphic? (2018)
Journal Article

We report the application of supramolecular gel and microemulsion droplet crystallisation methodologies to isoniazid crystallization. Tailored gelators have been designed with isoniazid mimetic functionality in an attempt to control crystal morpholog... Read More about Tailored Supramolecular Gel and Microemulsion Crystallization Strategies – is Isoniazid Really Monomorphic?.

How the Business Model of Customizable Card Games Influences Player Engagement (2018)
Journal Article

In this article, we analyse the game play data of three popular customisable card games where players build decks prior to game play. We analyse the data from a player engagement perspective, how the business model affects players, how players influe... Read More about How the Business Model of Customizable Card Games Influences Player Engagement.

Stability of volcanic ash aggregates and break-up processes (2017)
Journal Article

Numerical modeling of ash plume dispersal is an important tool for forecasting and mitigating potential hazards from volcanic ash erupted during explosive volcanism. Recent tephra dispersal models have been expanded to account for dynamic ash aggrega... Read More about Stability of volcanic ash aggregates and break-up processes.

Activating [4+4] photoreactivity in the solid-state via complexation: from 9-(methylaminomethyl)anthracene to its silver(I) complexes (2018)
Journal Article

The [4 + 4] photoreactivity of the anthracene derivative 9-(methylaminomethyl)anthracene (MAMA) has been investigated in solution, gel medium and in the solid state. While quantitative formation of the cyloaddition photoproduct was achieved upon irra... Read More about Activating [4+4] photoreactivity in the solid-state via complexation: from 9-(methylaminomethyl)anthracene to its silver(I) complexes.