A5101737193- Arctic and Antarctic ice dynamics
- Hydrology and Sediment Transport Processes
- Cryospheric studies and observations
- Climate change and permafrost
- Fluid Dynamics and Turbulent Flows
- Icing and De-icing Technologies
- Hydraulic flow and structures
- Wind and Air Flow Studies
- Fluid Dynamics and Vibration Analysis
- Aerodynamics and Acoustics in Jet Flows
- Soil erosion and sediment transport
- Hydrology and Watershed Management Studies
- Underwater Acoustics Research
- Geological formations and processes
- Flood Risk Assessment and Management
- Landfill Environmental Impact Studies
- Smart Materials for Construction
- Landslides and related hazards
- Water Systems and Optimization
- Coastal and Marine Dynamics
- Exercise and Physiological Responses
- Fish Ecology and Management Studies
- Environmental remediation with nanomaterials
- Geotechnical Engineering and Underground Structures
- Freezing and Crystallization Processes
University of Manitoba
2015-2024
Purdue University West Lafayette
2005-2008
Inflammatory Airway Disease (IAD), exercise-induced pulmonary hemorrhage (EIPH), and upper airway obstruction (UAO) are common respiratory tract diseases that can decrease performance. The purpose of this retrospective study was to compare bronchoalveolar lavage fluid cytology arterial blood gas analysis during a treadmill test by poorly performing racehorses presented Purdue University. One hundred thirty-two horses with history poor performance were included in study. Ten no or diagnosis...
Inflammatory Airway Disease (IAD), exercise‐induced pulmonary hemorrhage (EIPH), and upper airway obstruction (UAO) are common respiratory tract diseases that can decrease performance. The purpose of this retrospective study was to compare bronchoalveolar lavage fluid cytology arterial blood gas analysis during a treadmill test by poorly performing racehorses presented Purdue University. One hundred thirty‐two horses with history poor performance were included in study. Ten no or diagnosis...
Microcystin-LR (MCLR) is an acute hepatotoxicant and suspected carcinogen. Previous chronic studies have individually described hepatic morphologic changes, or alterations in the cytoskeleton, cell signaling redox pathways. The objective of this study was to characterize effects MCLR wild-type mice utilizing gene array analysis, morphology, plasma chemistries. given daily for up 28 days. RNA from 28-day hybridized onto mouse genechip arrays. 4 hours, 24 days, 1 day, days selected genes...
Abstract Streamflow data is often the most critical input for hydrologic and hydraulic research, modeling, design studies. measurement using close range non‐contact sensing such as image velocimetry a new technique that yet far from maturity. Most current image‐based surface techniques use correlation approaches require user to run algorithms. This can bias results if operator inexperienced. The main goal of this study develop novel, accurate fast river scheme called RivQNet does not...
The present study investigates the flow characteristics within recirculation region of three-dimensional offset jets using a particle image velocimetry technique. Measurements were performed for four nozzle height ratios 0, 2, 4 and 8. discharged jet entrained ambient fluid as depicted by streamlines superimposed on mean velocity contours. Analysis field showed that maximum streamwise decay rate increased with increasing ratio. Wall-normal spread rates 0.066 0.016 obtained 0 respectively,...
The Red River once again experienced significant flooding in spring 2009 due to high antecedent soil moisture from the previous fall and a deep snowpack frost penetration. peak stage at Fargo, North Dakota, broke record set 1897, Grand Forks, ND, was third largest its 126 years of record. computed natural river crest Winnipeg, Manitoba, second since official records began 1912, unregulated flow volume Selkirk, highest on 1852. Beyond statistical significance, flood unique magnitude frequency...
Experimental results for several trashrack models placed in a pressurized rectangular conduit are presented. The tests were performed both straight and oblique approach flows. Trashrack of different bar cross-sectional shapes, thicknesses, depths spacing studied range velocities. indicate that the head loss across increases with increasing velocity, flow inclination, blockage ratio. Lower losses observed bars shape other than rectangular. Results found to differ only moderately from previous...
In an attempt to increase the fundamental understanding of formation and evolution frazil ice, laboratory experiments have been conducted in a counterrotating flume at Hydraulics Research Testing Facility, University Manitoba. A high-precision thermometer recently improved digital image processing system were used acquire data from these experiments, which will hopefully aid development numerical models. The is described, results series are presented. effects air temperature, water velocity,...
Time-resolved particle image velocimetry was used to study the wake characteristics of partially submerged horizontal circular cylinders. Two submergence levels, namely 50% and 75% cylinder, blockage ratios 5% 9% were examined at a Reynolds number 10 000. The results from cases are compared reference case cylinder fully immersed deep in uniform flow. analyzed terms instantaneous mean flow, shear layer growth, stresses, turbulence transport while unsteady using frequency spectra temporal...
Abstract The aurora and associated high energy particles currents pose a space weather hazard to communication networks ground‐based infrastructure. Forecasting the location of auroral oval forms an integral component daily operations. We evaluate version OVATION‐Prime 2013 forecast model that was implemented for operational use at UK Met Office Space Weather Operations Cent. Building on our earlier studies, we ability predict in all latitude local time sectors under different levels...
Homozygous p53 deficient knockout mice were used to assess the role of in tumor promotion by protein phosphatase inhibitor and hepatic promoter microcystin-LR (MCLR). More than 50% human cancers bear mutations gene, particular, suppressor gene have been shown play a major hepatocarcinogenesis. Trp53 homozygous (inactivated p53) age-matched wild-type control assigned vehicle or MCLR-treated groups. MCLR saline was administered daily for up 28 days. RNA from 28-day study hybridized onto Mouse...
The City of Winnipeg and southern Manitoba have a long history flooding, with flood events being recorded soon after the region was settled in early nineteenth century. A devastating on Red River 1950 resulted some earliest benefit–cost analyses Canada respect to justified construction major mitigation projects Assiniboine Rivers 1960s 1970s. These were primarily designed reduce risk Winnipeg. Other been constructed outside area, which reduced damages towns, individual farmsteads rural...
Anthropogenic barriers to fish passage at stream crossings are an important issue in North America. Environmental regulations impose velocity restrictions on culvert flow, which may be overly simplistic. A series of laboratory experiments were conducted a corrugated metal pipe three mild slopes. Acoustic Doppler velocimeters used measure and turbulence quantities. significant percentage the cross-sectional flow area was found have streamwise lower than mean bulk velocity. Secondary currents...
Three-dimensional turbulent offset jets were investigated using a particle image velocimetry technique. Detailed measurements performed for height ratios of 0, 2 and 4. The presence backflow influenced the distribution mean velocity Reynolds stresses. A two-point correlation analysis was used to investigate spatial large-scale structures within inner shear layer flow domain. results revealed that dominate self-similarity region. Proper orthogonal decomposition on fluctuating field symmetry...