Article
Water Resources
Hyoun-Tae Hwang, Andre R. Erler, Omar Khader, Steven J. Berg, Edward A. Sudicky, Jon P. Jones
Summary: This study investigates the dynamic interactions between surface water and groundwater systems in the Athabasca River Basin (ARB), Canada. The results show a high degree of interaction between the groundwater system and the surface water system in the basin, with groundwater contribution ranging from 34% during high flow season to 63% during low flow season, and an average annual groundwater contribution of 45%. These findings highlight the importance of considering the groundwater system when analyzing the potential impacts of climate change on water availability and extreme hydroclimatic events.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)
Article
Oncology
Neema P. Mayor, Tao Wang, Stephanie J. Lee, Michelle Kuxhausen, Cynthia Vierra-Green, Dominic J. Barker, Jeffrey Auletta, Vijaya R. Bhatt, Shahinaz M. Gadalla, Loren Gragert, Yoshihiro Inamoto, Gerald P. Morris, Sophie Paczesny, Ran Reshef, Olle Ringden, Bronwen E. Shaw, Peter Shaw, Stephen R. Spellman, Steven G. E. Marsh
Summary: This study found that UHR HLA matching may not increase overall survival probability, but it does reduce the risk of aGVHD and in certain subsets, transplant-related mortality. Matching at the UHR level warrants consideration when choosing between multiple 10 out of 10 HLA-matched donors.
JOURNAL OF CLINICAL ONCOLOGY
(2021)
Article
Geochemistry & Geophysics
Enci Wang, Martyn Unsworth
Summary: This paper presents the first detailed 3-D study of the Alberta basement using the magnetotelluric (MT) method. It identifies multiple conductors in the crust and upper mantle, relating them to past tectonic events and kimberlite magmatism. The study also provides insights into the depth of the lithosphere-asthenosphere boundary and the characteristics of specific geological features in Alberta.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2022)
Article
Microbiology
Qianqian Shao, Xudong Jia, Yuanzhu Gao, Zhe Liu, Huan Zhang, Qiqi Tan, Xin Zhang, Huiqiong Zhou, Yinyin Li, De Wu, Qinfen Zhang
Summary: Mosquito viruses, including the Omono River virus (OmRV), exhibit extracellular transmission abilities, a feature not commonly found in members of the Totiviridae family. The high-resolution cryo-electron microscopy structure of a new strain, OmRV-LZ, revealed an unexpected protrusion at the five-fold vertex, potentially associated with the virus's transmission. Structural and molecular experiments were conducted to investigate the function of this protrusion and enhance our understanding of OmRV and other double-stranded RNA viruses.
Article
Ecology
Mark Baah-Acheamfour, Mark Dewey, Erin C. Fraser, Stefan G. Schreiber, Amanda Schoonmaker
Summary: This study provides a quantitative evaluation of the effectiveness of past and current reclamation criteria in boreal Alberta, Canada. The results indicate that the current criteria are more effective in promoting ecosystem recovery. Changes to the criteria, including metrics around soil quality, woody stem requirements, and native plant coverage, have positive impacts on the recovery process.
FRONTIERS IN FORESTS AND GLOBAL CHANGE
(2022)
Article
Gastroenterology & Hepatology
Abdel Aziz Shaheen, Kristine Kong, Christopher Ma, Chelsea Doktorchik, Carla S. Coffin, Mark G. Swain, Kelly W. Burak, Stephen E. Congly, Samuel S. Lee, Matthew Sadler, Meredith Borman, Juan G. Abraldes
Summary: This study evaluated the impact of COVID-19 restrictions on hospitalizations of patients with alcoholic and nonalcoholic cirrhosis as well as alcoholic hepatitis (AH) in Alberta, Canada. The study found that monthly admission rates for alcoholic and nonalcoholic cirrhosis remained stable before and during COVID-19, but there was a significant increase in admissions for alcoholic hepatitis.
CLINICAL GASTROENTEROLOGY AND HEPATOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Quazi K. Hassan, Khan Rubayet Rahaman, M. Razu Ahmed, Sheikh M. Hossain
Summary: Through a survey involving professionals who experienced the costliest wildland fire event in Canadian history, the study found that a majority of participants support proposed mitigation strategies for wildland fire risks, such as maintaining a 30 m buffer zone without vegetation, extending the buffer zone to 70 m, and constructing a 70 m ring road around communities.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
Yanlai Han, Xinzhong Du, Babak Farjad, Greg Goss, Anil Gupta, Monireh Faramarzi
Summary: Most previous water quality studies oversimplified in-stream processes for modeling the fate and transport of critical organic contaminants. This study developed a numerical modeling framework to address the influence of in-stream processes on the concentrations of organic contaminants, such as Polycyclic Aromatic Hydrocarbons (PAHs), and established relationships between environmental factors and PAH concentrations at a watershed scale. The results highlight the importance of considering critical in-stream processes and their relationship with environmental factors when simulating the fate and transport of organic contaminants in river systems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Sohrab Sharifi, Michael Hendry
Summary: This study examines the performance of InSAR on the Oldman River Dam in Canada and compares the mapped velocities obtained through InSAR analysis with previous investigations. The results show that both the spillway and embankment have been moving, with varying velocities. The study also analyzes the precision of the velocity estimations and the sources of error.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2023)
Article
Multidisciplinary Sciences
Finlay A. Mcalister, Zoe Hsu, Yuan Dong, Erik Youngson
Summary: The COVID-19 pandemic did not impact the frequency of outpatient care for community-dwelling adults in Alberta, Canada. However, there was an improvement in the continuity of care for patients with or without ambulatory care sensitive conditions (ACSC).
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Muhammad Rehan Anis, David J. Sauchyn
Summary: The study shows that precipitation is projected to increase in every season in the North Saskatchewan River Basin (NSRB), with significant trends in spring and fall but insignificant changes in summer. Winter extreme minimum temperature and summer extreme maximum temperature are expected to increase by 2-3 degrees C in the near future and 5-6 degrees C in the far future. Annual runoff is projected to increase by 19% compared to the base period.
Article
Multidisciplinary Sciences
Taylor Bujaczek, Sheldon Kolter, David Locky, Matthew S. Ross
Summary: This study investigated the occurrence of microplastic pollution in the North Saskatchewan River flowing through Edmonton, the fifth largest city in Canada. It found that microplastics were present in all samples, with fibers being the most common morphology, mostly of anthropogenic origin. The study also revealed no significant differences in microplastic concentration, size distribution, or morphological composition between upstream and downstream locations, suggesting nonpoint sources of microplastics in the river.
Article
Environmental Sciences
Alexander Lemieux, Natalie Kromrey, Lars Brinkmann
Summary: Distinguishing between natural and anthropogenic controls on the proportions of naturally occurring radioactive materials (NORMs) in the environment is important for water resource management. This study investigates the dynamics of uranium (U) and thorium (Th) in the Red Deer River basin and highlights the importance of erosion and particle transport in the badlands area on the distribution of U and Th. The study also reveals that groundwater-surface water interaction affects the proportions of dissolved U throughout the river. However, industry or land use does not significantly influence the export of U and Th, and the proportions of U and Th are within natural ranges.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Entomology
Amanda Jorgensen, Maya L. Evenden, Owen Olfert, Jennifer Otani
Summary: The study found that wheat midge adult emergence in the Peace River region of Canada was later than predicted in other regions, and there were multiple emergence peaks, supporting the existence of waves of emergence.
CANADIAN ENTOMOLOGIST
(2021)
Article
Environmental Sciences
Quazi K. Hassan, Ifeanyi R. Ejiagha, M. Razu Ahmed, Anil Gupta, Elena Rangelova, Ashraf Dewan
Summary: This study aimed to investigate the local warming trend and driving factors in the natural subregions of Alberta using a remote-sensing approach. The results showed that May was the month with the most significant warming trends in most subregions during 2001-2020, while the Grassland and Parkland subregions exhibited a cooling trend during the daytime in the summer.
Article
Geochemistry & Geophysics
M. E. Riebe, H. Busemann, C. M. O'D Alexander, L. R. Nittler, C. D. K. Herd, C. Maden, J. Wang, R. Wieler
METEORITICS & PLANETARY SCIENCE
(2020)
Article
Geochemistry & Geophysics
Zoltan Vaci, Carl B. Agee, Christopher D. K. Herd, Erin Walton, Oliver Tschauner, Karen Ziegler, Vitali B. Prakapenka, Eran Greenberg, Sylvia Monique-Thomas
METEORITICS & PLANETARY SCIENCE
(2020)
Article
Geochemistry & Geophysics
Libby D. Tunney, Christopher D. K. Herd, Robert W. Hilts
METEORITICS & PLANETARY SCIENCE
(2020)
Review
Geochemistry & Geophysics
A. Udry, G. H. Howarth, C. D. K. Herd, J. M. D. Day, T. J. Lapen, J. Filiberto
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2020)
Article
Geochemistry & Geophysics
Alex Sheen, Christopher D. K. Herd, Jarret Hamilton, Erin L. Walton
Summary: Baddeleyite (ZrO2) is a common accessory mineral in basaltic shergottites and is used as a geochronometer for U-Pb dating. The distribution of baddeleyite is mainly controlled by fractional crystallization, with pyroxene composition serving as a proxy for assessing its abundance and distribution in samples. Bulk HFSE content and fO(2) do not directly influence the distribution of baddeleyite.
METEORITICS & PLANETARY SCIENCE
(2021)
Article
Astronomy & Astrophysics
Junko Isa, Francois-regis Orthous-Daunay, Pierre Beck, Christopher D. K. Herd, Veronique Vuitton, Laurene Flandinet
Summary: The study found that the mass distribution of SOM in Tagish Lake meteorite fragments can be well fit by the Schulz-Zimm model, indicating the complex nature of primordial SOM. This suggests that aqueous reactions on asteroids are not necessary for cultivating complex SOM.
ASTROPHYSICAL JOURNAL LETTERS
(2021)
Article
Geochemistry & Geophysics
Libby D. Tunney, Patrick J. A. Hill, Christopher D. K. Herd, Robert W. Hilts, Miranda C. Holt
Summary: Soluble organic matter analysis of astromaterials provides insights into solar system chemistry and processes. Earth's surface is a significant source of organic compounds, posing potential contamination for meteorites. This study analyzes soluble organic matter in CM2 Aguas Zarcas carbonaceous chondrite, differentiating between intrinsic and contaminant sources. Results show that most detectable organic compounds are contaminants sourced from the terrestrial surface.
METEORITICS & PLANETARY SCIENCE
(2022)
Article
Geochemistry & Geophysics
Miranda C. Holt, Christopher D. K. Herd
Summary: This study analyzed the Tagish Lake carbonaceous chondrite using electron microscope techniques and identified various sulfide morphologies and compositions. The results suggest two different generations of sulfide formation, indicating the high-temperature formation during chondrule formation and the low-temperature formation during aqueous alteration events on the Tagish Lake parent body.
METEORITICS & PLANETARY SCIENCE
(2022)
Article
Geochemistry & Geophysics
Libby D. Tunney, Patrick J. A. Hill, Christopher D. K. Herd, Robert W. Hilts
Summary: Studying organic compounds in meteorites provides insight into the chemical processes in the early solar system. This study analyzed the organic compound contents of Tarda carbonaceous chondrite specimens collected shortly after the fall. By distinguishing between extraterrestrial and contaminant sources, the study identified intrinsic compounds and detected terrestrial organic compounds traced back to the meteorites' collection area.
METEORITICS & PLANETARY SCIENCE
(2022)
Biographical-Item
Geochemistry & Geophysics
Christopher Herd, John Spray, Tom Sharp
METEORITICS & PLANETARY SCIENCE
(2022)
Article
Geochemistry & Geophysics
Christopher D. K. Herd
Summary: This study reveals the petrogenetic history of the NWA 7635 Martian meteorite, showing similarities with NWA 8159 in terms of parent melts and differences in terms of entrained xenocrystic olivine and cooling rates. The study also suggests that the redox reaction between olivine and melt occurred during the petrogenetic process, contrary to previous theories.
METEORITICS & PLANETARY SCIENCE
(2023)
Article
Geochemistry & Geophysics
Libby D. Tunney, Patrick J. A. Hill, Christopher D. K. Herd, Robert W. Hilts
Summary: Organic matter in astromaterials can be contaminated when they reach the Earth's surface through contact and processing. We investigated the interaction between handling and curation materials and meteorite specimens, documenting hydrophobic organic compound contamination. Our analysis of soluble organic compounds in these materials provides insights into the best materials and methods for astromaterials' collection and curation. It is important to thoroughly investigate the materials used in handling and curation of meteorites to create a contamination baseline and discriminate terrestrial and extraterrestrial compounds.
METEORITICS & PLANETARY SCIENCE
(2023)
Article
Geochemistry & Geophysics
Hassane Nachit, Abderrahmane Ibhi, Mohamed En-nasiry, Vanni Moggi Cecchi, Giovanni Pratesi, Christopher D. K. Herd, Giorgio S. Senesi
Summary: Fragments of a new iron meteorite, named Oglat Sidi Ali, were discovered and collected in Morocco. These fragments are part of a unique strewnfield that originated from the fragmentation of a single iron meteorite in the lower atmosphere. Analysis of the fragments' geochemical and mineralogical data, as well as their microstructures using EBSD, suggests they belong to the ungrouped iron meteorite category. Comparison with other ungrouped iron meteorites purchased in Northeast Morocco shows similar characteristics, indicating a common origin from a single extraterrestrial body.
Article
Astronomy & Astrophysics
Denis Vida, Peter G. Brown, Hadrien A. R. Devillepoix, Paul Wiegert, Danielle E. Moser, Pavol Matlovic, Christopher D. K. Herd, Patrick J. A. Hill, Eleanor K. Sansom, Martin C. Towner, Juraj Toth, William J. Cooke, Donald W. Hladiuk
Summary: This study reports the observation of a decimeter-sized rocky meteoroid on a retrograde long-period comet orbit. The meteoroid fragmented during flight and exhibited characteristics consistent with asteroidal meteoroids. The estimated flux of rocky objects impacting Earth from the Oort cloud suggests that significant rocky material is implanted in the cloud, supporting migration-based dynamical models of Solar System formation.
Article
Geochemistry & Geophysics
Patrick J. A. Hill, Libby D. Tunney, Christopher D. K. Herd
Summary: This study explores the feasibility of using drones with thermal imaging technology to locate meteorites in snow-covered fields. The research found that the thermal contrast was significant enough to easily identify meteorites in thermal images, but not enough to distinguish between meteorites and similar Earth rocks. The combination of thermal imaging and visible imagery has the potential to aid in the rapid recovery of meteorites in snow-covered landscapes.
METEORITICS & PLANETARY SCIENCE
(2023)