A5055380972- Methane Hydrates and Related Phenomena
- CO2 Sequestration and Geologic Interactions
- Spacecraft and Cryogenic Technologies
- Atmospheric and Environmental Gas Dynamics
- Geometric Analysis and Curvature Flows
- Alzheimer's disease research and treatments
- Hydrocarbon exploration and reservoir analysis
- Point processes and geometric inequalities
- Nonlinear Partial Differential Equations
- Pancreatitis Pathology and Treatment
- Icing and De-icing Technologies
- Geometric and Algebraic Topology
- Diamond and Carbon-based Materials Research
- Microfluidic and Bio-sensing Technologies
- Carbon Nanotubes in Composites
- Enhanced Oil Recovery Techniques
- Surface Modification and Superhydrophobicity
- Nanofluid Flow and Heat Transfer
- Fluid Dynamics and Heat Transfer
- Arctic and Antarctic ice dynamics
- Hydraulic Fracturing and Reservoir Analysis
- Freezing and Crystallization Processes
- Navier-Stokes equation solutions
- Amyotrophic Lateral Sclerosis Research
- Advanced Data Storage Technologies
McGill University
2021-2025
Mayo Clinic in Arizona
2021
University of Ottawa
2011-2019
Newcastle University
2019
Arizona State University
2017-2018
Hospital Txagorritxu
2013
Hospital Universitario Araba
2013
Colorado School of Mines
2011
Visceral adipose tissue plays a critical role in numerous diseases. Although imaging studies often show involvement abdominal diseases, their outcomes may vary from being mild self-limited illness to one with systemic inflammation and organ failure. We therefore compared the pattern of visceral injury during acute pancreatitis diverticulitis determine its Acute pancreatitis–associated had ongoing lipolysis absence adipocyte triglyceride lipase (ATGL). Pancreatic injected into mouse...
The utility of plasma amyloid beta (Aβ) and tau levels for the clinical diagnosis Alzheimer's disease (AD) dementia has been controversial. main objective this study was to compare Aβ42 measured by ultra-sensitive immunomagnetic reduction (IMR) assays in samples collected at Banner Sun Health Institute (BSHRI) (United States) with those from National Taiwan University Hospital (NTUH) (Taiwan). Significant increase were detected AD subjects both cohorts, while increased only NTUH cohort. A...
Gas hydrate mechanical stability under pressure is critically important in energy supply, global warming, and carbon-neutral technologies. The of these polyhedral guest-host crystals increasing affected by host cage type face connectivity as well guest gas occupancy. geometry-imposed generates crystal lattices that include inclusion-matrix material composite structures. In this paper, we integrate Density Functional Theory simulations with a polyhedral-inspired model quantifies limits,...
(1) Background: New technologies involving gas hydrates under pre-nucleation conditions such as separations and storage have become more prominent. This has necessitated the characterization modeling of transport properties systems. (2) Methodology: work explored methane hydrate systems conditions. All-atom molecular dynamics simulations were used to quantify performance TIP4P/2005 TIP4P/Ice water models predict viscosity, diffusivity, thermal conductivity using various formulations. (3)...
The viscosity of oxygen-functionalized multi-walled carbon nanotube (O-MWCNT) nanofluids was measured for concentrations from 0.1 to 10 ppm under conditions 0 30 MPag pressures and C temperatures. presence O-MWCNTs did not affect the temperature dependence but reduce effective solution due cumulative hydrogen bond-disrupting surface effects, which overcame internal drag forces. added a weak pressure because their ability align more with flow direction as increased. In liquid hydrate phase...
We present a mixed-integer nonlinear programming (MINLP) formulation to achieve minimum-cost designs for reinforced concrete (RC) structures that satisfy building code requirements. The objective function includes material and labor costs concrete, steel reinforcing bars, formwork according typical contractor methods. Restrictions enforce correct geometry of the cross-section dimensions each element relative sizes elements within structure. Other restrictions define stiffness displacement...
Recent strategies developed to examine the nucleation of crystal structures like tetrahydrofuran (THF) hydrates without effects a solid interface have included acoustic levitation, where only liquid-gas initially exists. However, ability now exists levitate and freeze multiple droplets simultaneously, which could reveal interdroplet provide further insight into interfacial phenomena. In this study, using direct digital infrared imaging techniques, freezing up three simultaneous THF hydrate...
The dynamic viscosities of nanofluids containing oxygen-functionalized graphene nanoflakes (O-GNFs) were measured for concentrations ranging from 0.1 to 10 ppm under pressures 0 30 MPag and temperatures °C. Water's viscosity dependence on temperature was not affected by the presence O-GNFs, though effective solution reduced (termed non-Einsteinian viscosity) against common expectations. Hydrogen bond strength may have been at hydrophobic part O-GNF surface, whereas density fluctuations...
Abstract Methane gas hydrates (GHs) are polyhedral crystalline guest-host materials found under high pressure and low-temperature conditions, which can serve as an energy source. Previous work on methane GH material physics was limited to simple linear models, only involves second-order elasticity. However, this is not fully suited high-stress load conditions in technological applications fundamental physics. For other systems, it has been demonstrated that third-order elasticity derivatives...
Inhibiting viscosity increases from hydrate formation has been a persistent flow assurance challenge for decades. In this study, two low-dosage kinetic inhibitors with 10 wt % hydrophobic content, amphiphilic block copolymers poly(styrene-b-vinylpyrrolidone) and poly(pentafluorostyrene-b-vinylpyrrolidone), were synthesized using reversible addition–fragmentation chain-transfer polymerization switchable agent. Aqueous solutions of these at 700 7000 ppm loaded in high-pressure rheometer tested...
Thermal cracking involves the breakdown of large hydrocarbons to smaller via scission carbon–carbon, carbon–nitrogen, and carbon–sulfur bonds. Mild thermal reactions occur between 350 450 °C primarily in liquid phase. A reaction model implementing vapor–liquid equilibrium (VLE) calculations was developed this work better represent reacting system–the The resulting can be used determine kinetics experimental systems that have a VLE component, which would normally make it inadequate for...