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Item A 1000-Year Record of Temperature From Isotopic Analysis of the Deep Critical Zone in Central China(Wiley Open Access [Commercial Publisher]; American Geophysical Union [Client Organisation], 2023) Wang, Hongxiu; Li, Han; Xiang, Wei; Lu, Yanwei; Wang, Huanhuan; Hu, Wei; Si, Bing Cheng; Jasechko, Scott; Mcdonnell, JeffreyTemperature proxies for paleoclimate reconstruction have been made typically via ice cores, tree rings, stalagmites, and lake sediments. While extremely useful, these proxies can be limited spatially. Here we sampled a 98 m “soil core” from Loess Plateau of China and examined the relationship between pore water isotopic values and hydroclimate history. We extracted soil pore water for δ 18O, δ 2H, and 3H and measured chloride concentration. The 3H-peak at 6 m and chloride mass balance were used to turn depth into calendar year. A 1000 year span was revealed. δ 18O and δ 2H values between 14–50 m were anomalously low—bracketing well the Little Ice Age period from 1420 to 1870. The identification was consistent with other standard proxies in the region and showed the same temporal dynamics of temperature anomalies. Our study shows the potential of stable isotopes of soil water for paleoclimate reconstruction in deep soils.Item A 350 14C yr discrepancy between bone and tooth dates from the same grave at the Early Neolithic cemetery of Shamanka II, Lake Baikal, southern Siberia: reservoir effects or a misplaced mandible?(Radiocarbon, 2025-01) Schulting, Rick; Scharlotta, Ian; Lieverse, Angela; Jessup, Erin; Bronk Ramsey, Christopher; Bazaliiskii, Vladimir I; Weber, AndrzejA 350 14C yr discrepancy was found between dates on postcranial remains and mandibular teeth on what was thought to be the same individual from the Early Neolithic cemetery of Shamanka II, Lake Baikal. Stable nitrogen isotope results suggested a major shift in diet between childhood (when the teeth formed) and adulthood (represented by the postcrania), which could have resulted in different 14C ages through a freshwater reservoir effect. Subsequent additional dating on the mandible and postcranial elements, however, indicated that the mandible actually belonged to a different individual. More subtle reservoir effects can be seen on the sequentially forming teeth and mandible. The practice by prehistoric hunter-gatherers of Lake Baikal of re-opening graves and removing cranial elements has long been known, but this is the first evidence for the inclusion of a mandible from a separate individual, though whether it was intentional or incidental is uncertain. As well as providing new insights into mid-Holocene mortuary practices in the region, our findings raise a cautionary note for the examination of disturbed graves.Item A case study of the patient wait experience in an emergency department with therapy dogs(Patient Experience Journal, 2019) Dell, Colleen; Stempien, James; Broberg, Lindsey; Husband, Alicia; Jurke, LaceyThe quality of patient healthcare is a growing concern in Canada’s hospital emergency departments (ED) due to increasing wait times and associated adverse outcomes. A developing body of literature indicates that therapy dogs can positively impact the patient experience. In 2016, members of our team partnered with the Royal University Hospital (RUH) in Saskatchewan to become the first ED in Canada to integrate a visiting therapy dog to positively impact the patient wait experience. The aim of this preliminary case study was to examine if and how this unique initiative impacted patients’ feelings during their ED wait. A brief questionnaire was completed with one-hundred and twenty-four patients pre and post-therapy dog visit and a research observer documented the encounters. Quantitative and qualitative analysis of the data revealed that visiting with a therapy dog in the ED appeared to improve patients’ feelings. Specifically, patients’ perceived comfort levels increased and their distress levels decreased, and the encounters were considered by patients to be a welcome distraction from the stressful ED environment. Our team, comprised of clinicians, researchers, therapy dog handlers and patient advocates documented the advantages and challenges of implementing the initiative. The outcomes support further study of patients’ wait time experiences in the ED and the utility of a visiting therapy dog.Item A comparative analysis and evaluation of PEN-3 cultural model and Leininger’s theory(International Journal of Africa Nursing Sciences, 2024-06) Opara, Uchechi; Bassendowski, S; Petrucka, PammlaUsing a theoretical framework in nursing research is vital to promote understanding of a theory, its major concepts, and the relationship between concepts in research. We propose to conduct a study focusing on “Women’s Experiences of Cultural Beliefs and Practices that Influence Their Use of Maternal Health Services in Nigeria.” The PEN-3 cultural model, a non-nursing theory that exhibits the characteristics of mid-range nursing theories, will be used as a theoretical framework. As a nursing research, Leininger’s Culture Care Diversity and Universality Theory also known as Culture Care Theory would have been best suited for the proposed research. However, as a grand theory, the Culture Care Theory has limited applicability in the proposed study due to its abstraction and complexity. A critical analysis and evaluation of both theories were conducted to enhance a deep understanding of the PEN-3 cultural model and the Culture Care Theory in supporting the proposed research. This critical evaluation is vital, especially for potential users of the PEN-3 cultural model, to understand the model’s potential usefulness in guiding nursing research and explaining nursing situations.Item A Critical Comparison of Focused Ethnography and Interpretive Phenomenology in Nursing Research(Global Qualitative Nursing Research, 2024-03) Opara, Uchechi; Petrucka, PammlaChoosing an appropriate qualitative methodology in nursing research is a researcher’s first step before beginning a study. Such a step is critical as the selected qualitative methodology should be congruent with the research questions, study assumptions, data gathering and analysis to promote the utility of such research in enhancing nursing knowledge. In this paper, we compare focused ethnography by Roper and Shapira and interpretive phenomenology by Benner. Though these methodologies are naturalistic and appear similar, both have different methodological underpinnings. The historical, ontological, epistemological, and axiological philosophy guiding each methodology are described. In addition, the methodological underpinnings of both methodologies and a justification for use in nursing research are provided. This paper will assist future researchers who aim to employ these methodologies in nursing research.Item A Micro Financing Framework for Rural Water and Sanitation provisioning in Sub-Saharan Africa(UNU-INWEH, 2014) Mengueze, Sandrine; Mbuvi, Dorcas; Dickin, Sarah; Schuster Wallace, CorinneAcross rural regions in particular, inadequate access to water supply and sanitation (WSS) services negatively affects women more than men. Women and girls are twice as likely as men (and boys) to bear the burden of water collection that requires walking long distances in search of improved sources. Collecting and carrying large amounts of water is physically demanding and limits time available to pursue educational, professional and leisure activities. Indeed, women lose about forty billion hours each year in daily water collection in SSA - time that could be redirected towards other socio-economic and productive activities. Moreover, women and girls risk physical and sexual assualt when collecting water or trying to find a dignified location to relieve themselves. Given the need for sustainable access to WSS in rural Sub Saharan Africa for improved quality of life, universal access becomes a moral and practical imperative. Water is necessary for health, food production, economic activities and environmental integrity. In order to attain national water supply and sanitation (WSS) Millennium Development Goal targets by 2015, developing country governments need to advance their rural WSS services coverage. In Sub Saharan Africa in particular, scaling up functional, quality, reliable and affordable WSS facilities among rural populations is a significant impediment. Moreover, in most cases rural households find it difficult to raise up-front capital that is often required for the construction of facilities. Self-sustaining micro financed facilities can be realized for equitable and safe rural WSS provision. A systematic model through which sustainable rural WSS-related micro financing can be attained is currently lacking. Self-supply, while contested with respect to issues of responsibility, is a feasible option given that there is money to be made in service delivery and the fact that many rural families pay considerably more for their drinking water through informal water providers, without any guarantee of quality. This does not have to undermine government responsibility for provision; rather accelerate the scale up and out of rural access and put community-based mechanisms in place for sustainable interventions that can be incorporated into national WSS strategies as they become established. Moreover, it overcomes the primary challenge in self-supply – that of up front funds for infrastructure. Given that key principles of successful microfinance (including shared solidarity and mutual accountability, access to capital, capacity development and ownership) are similar to and supportive of the principles of sustainable WSS interventions (community engagement and ownership, capacity development, financial accountability), it makes sense to explore this as a mechanism for self-supply in rural settings in order to increase access in a timely manner. A co-operative microfinance framework would potentially share the financial and social costs and benefits between communities and governments. Many of the benefits that accrue through WSS access are realized by the community (through increased health, school attendance and time savings) and the government (through reduction in requirements for other services, such as healthcare, and improved productivity that supports national growth). The framework demands active and coordinated government support through specific related ministries (water and sanitation, health, finance, rural development, public works, etc.). It relies on continued village demand for improved WSS facilities and willingness to effectively engage in the revolving RoSCA schemes. Additionally, it is founded on clear division of responsibilities among four main stakeholders for the transparent and accountable operationalization of interventions. The revenue generated, in addition to paying for the operation and maintenance of the system(s) can be used to acquire or expand additional basic household services. As a result, co-operative members are able to engage in other water and non-water related entrepreneurial activities, to add on to the WSS-fund and strengthen the local economy more generally. However, the framework is flexible and not limited to WSS provisioning.Item A novel biochar adsorbent for treatment of perfluorooctanoic acid (PFOA) contaminated water: Exploring batch and dynamic adsorption behavior(Journal of Water Process Engineering, 2024-11) Afrooz, Malihe; Zeynali, Rahman; Soltan, Jafar; McPhedran, KerryPerfluoroalkyl substances (PFAS), like perfluorooctanoic acid (PFOA), are of concern worldwide given they are ubiquitous in the environment. In this study, the treatment of PFOA-contaminated water was assessed using biochar adsorbents produced from raw canola straw (RCS) through chemical activation with H3PO4 and ZnCl2 and microwave-assisted pyrolysis (MWP). MWP conditions were evaluated to create optimal H3PO4-treated (PBC) and ZnCl2-treated (ZnBC) biochar adsorbents with treatments determined using a central composite design (CCD) based on the response surface methodology (RSM) considering activator concentration, and microwave heating time and power. The highest PFOA removal efficiency for PBC (3.0 mol/L) was achieved at 92 % (368 μg/g), while for ZnBC (0.55 mol/L) it was 84 % (336 μg/g). In contrast, untreated biochar and RCS had markedly lower PFOA removals of 5 % and 1 %, respectively. Activation of biochar under optimal pyrolysis conditions (6 min at 600 W) led to increased chemical functional groups, porosity, and surface area, as confirmed by FT-IR, XPS, and BET. The kinetic study indicated that chemisorption was the primary PFOA adsorption mechanism, while the Freundlich isotherm model suggested heterogeneous multilayer adsorption for PFOA removal. Further, background salts enhanced PFOA adsorption through divalent bridges and salting-out mechanisms. PBC and ZnBC adsorbents performed well over a broad pH range of 3 to 9. Lastly, Yan and Yoon-Nelson models were used to assess adsorption breakthrough for a model fixed-bed adsorption system. This study exhibits that PBC and ZnBC adsorbents, derived from accessible biomass, offer an environmentally friendly solution to remove PFOA from contaminated water.Item A Nutrition Education Intervention Positively Affects the Diet–Health-Related Practices and Nutritional Status of Mothers and Children in a Pulse-Growing Community in Halaba, South Ethiopia(Children, 2024-11) Lombamo, Getahun; Henry, Carol; Zello, GordonObjective: We conducted a six-month nutrition education intervention focused on the consumption of pulses and other foods to assess the effect on knowledge, attitude and practice (KAP) as well as the nutritional status of children and mothers from two pulse-growing communities in Halaba, south Ethiopia. Methods: About 200 mother–child pairs in each of two purposively selected communities participated in this intervention study. A six-month nutrition education programme, involving interactive monthly community meetings and home visits, was offered to one of the two communities and the other served as a control/comparison. This study incorporated the use of Health Belief Model constructs to assess the KAP/perceptions of mothers surrounding pulse and other food consumptions, as well as nutrition-related issues before and after the intervention. Objective measures included dietary diversity scores (DDSs), one-day weighed dietary intakes and nutritional status measures based on anthropometric information. Demographics and socioeconomic information were also collected at baseline and endline. Results: Significant improvements (p < 0.05) were found in the intervention group on the KAP and perceptions of pulse nutrition benefits among mothers, DDSs and pulse and animal source food consumption indexes for mothers and children and the mean body-mass-index-for-age Z-score and wasting among children. Conclusions: Community-based nutrition education interventions involving monthly interactive community meetings and home visits in pulse-growing communities from a resource-poor country like Ethiopia can be effective in improving mothers’ knowledge of pulse nutrition and consumption frequency, leading to improvements in the DDSs of children and mothers while decreasing child underweight and wasting.Item A Parallel Process of Staff–Family Distress in Long-Term Care: A Challenge to Collaboration(SAGE Open Nursing, 2024-12) Serrano, Diandra; Sussman, Tamara; Kaasalainen, Sharon; Wickson-Griffiths, Abigail; Thompson, Genevieve; Hunter, Paulette V.; MacIntosh, Health B.; Brazil, KevinIntroduction Supporting persons living with advanced dementia in long-term care (LTC) homes requires strong collaborative partnerships between staff, family members, and residents. Yet, relational tensions—such as differing expectations around care decisions—can inhibit the implementation of collaborative partnerships at this critical point in the trajectory of care. Objective This study aims to explore the emotional experiences of families and staff during shared decision-making processes for individuals with advanced dementia in LTC. Method Guided by interpretative description, this qualitative study investigated the experiences of staff (n = 12) and families (n = 16) collaborating in two Canadian LTC homes. Data was collected through semistructured interviews lasting 45–60 min, which facilitated a detailed exploration of participants’ narratives. The interviews were audio-recorded, transcribed, and analyzed using reflexive thematic analysis facilitated by a combination of inductive and deductive approaches. Results Our analysis revealed a complex parallel process of trauma and grief including accumulated distress, isolation, and feelings of devalue that worked together to create distance between staff and families at a time when connection was critical. Our findings further suggested that a lack of time and space for reflection and validation for staff and family, resulted in a cycle whereby staff and families engaged in a push and pull dynamic with each viewing the other as adversaries rather than allies. Conclusion Our findings highlight the critical need for reflexive opportunities in LTC homes to overcome and attend to the emotional barriers that interfere with true collaboration between staff and families. We hope that the proposed cycle serves as a preliminary framework to support staff in navigating difficult conversations and emotions, and fosters reflexive care that enhances, rather than obstructs, connections.Item A Review of Health Risks and Pathways for Exposure to Wastewater Use in Agriculture(National Institute of Environmental Health Sciences (NIEHS), 2016) Dickin, Sarah K; Schuster Wallace, Corinne; Qadir, Manzoor; Pizzacalla, KatherineBackground: Wastewater is increasingly being used in the agricultural sector to cope with the depletion of freshwater resources as well as water stress linked to changing climate conditions. As wastewater irrigation expands, research focusing on the human health risks is critical because exposure to a range of contaminants must be weighed with the benefits to food security, nutrition and livelihoods. Objectives: The goal of this paper was to review research examining health risks and exposure pathways associated with wastewater irrigation to identify research trends and gaps. Methods: We conducted a review of the literature and identified a total of 126 studies published from 1995 to 2013. Findings were summarized based on several themes including types of exposure pathways, wastewater contaminants, methodological approaches and the geographical distribution of research. Results: Only 23 studies used epidemiological methods, while most research applied alternative methods to estimate risk, such as quantitative risk assessment models or comparisons of crop contamination to established guidelines for wastewater reuse. A geographic breakdown demonstrated a focus on microbiological contaminants in specific regions such as sub-Saharan Africa and Southeast Asia, despite growing chemical risks associated with rapid urbanization and industrialization that may change the types and distribution of wastewater contaminants. Conclusions: To provide a more comprehensive understanding of the health risks of wastewater use in agriculture, future research should consider multiple exposure routes, long-term health implications, and increase the range of contaminants studied, particularly in regions heavily dependent on wastewater irrigation.Item A review of the neurobehavioural, physiological, and reproductive toxicity of microplastics in fishes(Ecotoxicology and Environmental Safety, 2024-09) Hasan, AKM Munzurul; Hamed, Mohamed; Hasan, Jabed; Martyniuk, Christopher J.; Niyogi, Som; Chivers, Douglas P.Microplastics (MPs) have emerged as widespread environmental pollutants, causing significant threats to aquatic ecosystems and organisms. This review examines the toxic effects of MPs on fishes, with a focus on neurobehavioural, physiological, and reproductive impacts, as well as the underlying mechanisms of toxicity. Evidence indicates that MPs induce a range of neurobehavioural abnormalities in fishes, affecting social interactions and cognitive functions. Altered neurotransmitter levels are identified as a key mechanism driving behavioural alterations following MP exposure. Physiological abnormalities in fishes exposed to MPs are also reported, including neurotoxicity, immunotoxicity, and oxidative stress. These physiological disruptions can compromise the individual health of aquatic organisms. Furthermore, reproductive abnormalities linked to MP exposure are discussed, with a particular emphasis on disruptions in endocrine signaling pathways. These disruptions can impair reproductive success in fish species, impacting population numbers. Here we explore the critical role of endocrine disruptions in mediating reproductive effects after exposure to MPs, focusing primarily on the hypothalamic-pituitary-gonadal axis. Our review highlights the urgent need for interdisciplinary research efforts aimed at elucidating the full extent of MP toxicity and its implications for aquatic ecosystems. Lastly, we identify knowledge gaps for future research, including investigations into the transgenerational impacts, if any, of MP exposure and quantifying synergetic/antagonistic effects of MPs with other environmental pollutants. This expanded knowledge regarding the potential risks of MPs to aquatic wildlife is expected to aid policymakers in developing mitigation strategies to protect aquatic species.Item A theory-based model of cumulative activity(Scientific Reports, 2022-09) Phillips, Kole; Stanley, Kevin; Fuller, DanielEnergy expenditure can be used to examine the health of individuals and the impact of environmental factors on physical activity. One of the more common ways to quantify energy expenditure is to process accelerometer data into some unit of measurement for this expenditure, such as Actigraph activity counts, and bin those measures into physical activity levels. However, accepted thresholds can vary between demographics, and some units of energy measurements do not currently have agreed upon thresholds. We present an approach which computes unique thresholds for each individual, using piecewise exponential functions to model the characteristics of their overall physical activity patterns corresponding to well established sedentary, light, moderate and vigorous activity levels from the literature. Models are fit using existing piecewise fitting techniques and software. Most participants’ activity intensity profile is exceptionally well modeled as piecewise exponential decay. Using this model, we find emergent groupings of participant behavior and categorize individuals into non-vigorous, consistent, moderately active, or extremely active activity intensity profiles. In the supplemental materials, we demonstrate that the parameters of the model correlate with demographics of age, household size, and level of education, inform behavior change under COVID lockdown, and are reasonably robust to signal frequency.Item A universal empirical equation to estimate the abundance of carbapenem-resistant genes during aerobic digestion of wastewater sludge(Water Practice & Technology, 2024-11) Poorasgari, Eskandar; Örmeci, BanuCarbapenem-resistant genes (CRGs) exist in wastewater and accumulate in wastewater sludge. Due to the potential threat posed by the CRGs, it is important to quantify CRGs and predict their removal and discharge concentrations during aerobic sludge digestion. Nonetheless, gene quantification is tedious, error-prone and expensive. This study aims to develop multiple regression models to estimate CRGs from sludge parameters that are routinely measured for the monitoring and design of aerobic sludge digesters. Batch reactors were operated at mesophilic and thermophilic temperatures for 20-35 days. Sludge samples were periodically taken during aerobic digestion. Three CRGs (blaGES, blaOXA-48 and blaIMP-27) together with 16S rRNA and integron class 1 genes were quantified. Aerobic digestion reduced the abundance of all target genes. Multiple regression modelling was conducted in linear (LM) and non-linear (NLM) modes. Sums of squared errors of the LM models were 0-0.048, whereas those of the NLM models were 0–0.003. Adjusted R2 ranges of the LM and NLM models were 0.774–0.931 and 0.986–1, respectively. Overall, the NLM models predicted the abundance of target genes more accurately than the LM models. NLM models may be used to modify the design and operational parameters of aerobic sludge digesters.Item Above- and Below-Ground Carbon Sequestration in Shelterbelt Trees in Canada: A Review(MDPI, 2019) Mayrinck, Rafaella; Laroque, Colin; Amichev, Beyhan; Rees, Ken VanShelterbelts have been planted around the world for many reasons. Recently, due to increasing awareness of climate change risks, shelterbelt agroforestry systems have received special attention because of the environmental services they provide, including their greenhouse gas (GHG) mitigation potential. This paper aims to discuss shelterbelt history in Canada, and the environmental benefits they provide, focusing on carbon sequestration potential, above- and below-ground. Shelterbelt establishment in Canada dates back to more than a century ago, when their main use was protecting the soil, farm infrastructure and livestock from the elements. As minimal-and no-till systems have become more prevalent among agricultural producers, soil has been less exposed and less vulnerable to wind erosion, so the practice of planting and maintaining shelterbelts has declined in recent decades. In addition, as farm equipment has grown in size to meet the demands of larger landowners, shelterbelts are being removed to increase efficiency and machine maneuverability in the field. This trend of shelterbelt removal prevents shelterbelt’s climate change mitigation potential to be fully achieved. For example, in the last century, shelterbelts have sequestered 4.85 Tg C in Saskatchewan. To increase our understanding of carbon sequestration by shelterbelts, in 2013, the Government of Canada launched the Agricultural Greenhouse Gases Program (AGGP). In five years, 27 million dollars were spent supporting technologies and practices to mitigate GHG release on agricultural land, including understanding shelterbelt carbon sequestration and to encourage planting on farms. All these topics are further explained in this paper as an attempt to inform and promote shelterbelts as a climate change mitigation tool on agricultural lands.Item Accelerating the deployment of SMRs in Canada: The importance of intermediaries(Environmental Innovation and Societal Transitions, 2024) Iakovleva, Mariia; Rayner, JeremyMuch of the research on technological innovation, especially in the context of sustainability transitions, has focused on the early stages of innovation. Much less work has been done on successful acceleration of technological change after pre-development and take-off. Filling this gap is important for improving the chances of successful deployment of small modular reactors (SMRs). Recent work on sustainability transitions has focused on the importance of "intermediaries". These are actors and platforms that sustain the momentum of transitions by linking actors, activities, and resources. Their role in the acceleration phase is less well understood and SMRs provide a compelling case study of the challenges. This paper uses document, web, and interview data to analyze the role of intermediaries in Canadian SMR deployment, focusing particularly on the intermediaries needed for successful social innovation; identifies gaps; and evaluates the role of public policy in supporting the development of these critical relationships.Item Achieving Universal Healthcare Coverage in a Multilingual Care Setting: Linguistic Diversity and Language Use Barriers as Social Determinants of Care in Ghana(Qualitative Health Research, 2024-11) Kwame, PhD, AbukariThe Health Sustainable Development Goal (SDG3) focuses on achieving universal healthcare coverage (UHC) through people-centered primary care and access to affordable high-quality healthcare services, medicines/vaccines, and specialized care professionals without undue financial stress. However, achieving UHC can be challenging if healthcare providers and patients cannot communicate meaningfully. Severe language barriers affect access to healthcare services. This study explores how linguistic diversity and language use barriers impact person-centered care delivery and access to healthcare services in a multilingual Ghanaian healthcare setting. Data were collected through in-depth individual interviews with patients (n = 17), caregivers (n = 11), and nurses (n = 11), one group interview with four patients, and participant observations. Data transcripts and field notes were inductively and manually coded and analyzed thematically. The study revealed that language barriers affect effective nurse–patient communication and interaction. Healthcare professionals and patients shop for translators and interpreters to overcome communication challenges. The study also found that healthcare professionals used medical jargon to emphasize their identity as experts despite its consequences on nurse–patient interactions and patient care. Miscommunication and misunderstanding due to language barriers derail nurse–patient therapeutic relationships and undermine patient disclosure, participation in the care process, and care quality, leading to adverse UHC outcomes. Therefore, serious attention must be paid to language use contingencies to achieve universal care, especially in resource-scared and multilingual healthcare contexts.Item Adapting to Climate Change Through Source Water Protection: Case Studies from Alberta and Saskatchewan, Canada(Scholarship@Western, 2018) Patrick, Robert J.The protection of drinking water sources continues to gain momentum in First Nation communities on the Canadian Prairie. Through the identification of potential threats to drinking water sources communities are taking action to mitigate those threats. This article explores the extent to which climate change has been taken into consideration in recent source water protection planning community exercises. In addition, this article describes how source water protection planning has potential to enhance community adaptation strategies to reduce the impacts of climate change on source water and drinking water systems. Results are based on six case studies from Alberta and Saskatchewan.Item Addition of Biochar to a Sandy Desert Soil: Effect on Crop Growth,Water Retention and Selected Properties(MDPI, 2019) Alotaibi, Khaled D.; Schoenau, JeffreyAgricultural and environmental applications of biochar (BC) to soils have received increasing attention as a possible means of improving productivity and sustainability. Most previous studies have focused on tropical soils and more recently temperate soils. However, benefits of BC addition to desert soils where many productivity constraints exist, especially water limitations, have not been widely explored. Thus, three experiments were designed using a desert soil from Saudi Arabia to address three objectives: (1) to evaluate the effect of BCs produced from date palm residues added at 8 t ha−1 on wheat growth, (2) to determine the effect of BC addition and BC aging in soil on water retention, and (3) to reveal the effect of BC on selected soil physical (bulk density, BD; total porosity; TP) and chemical (pH; electrical conductivity, EC; organic matter, OM; cation exchange capacity, CEC) properties. The feedstock (FS) of date palm residues were pyrolyzed at 300, 400, 500, and 600 °C, referred to here as BC300, BC400, BC500, and BC600, respectively. The BC products produced at low temperatures were the most effective in promoting wheat growth when applied with the NPK fertilizer and in enhancing soil water retention, particularly with aging in soil, whereas high -temperature BCs better improved the selected soil physical properties. The low-temperature BCs increased the yield approximately by 19% and improved water retention by 46% when averaged across the incubation period. Higher water retention observed with low-temperature BCs can be related to an increased amount of oxygen-containing functional groups in the low-temperature BCs, rendering BC surfaces less hydrophobic. Only the BC300 treatment showed a consistent positive impact on pH, OM, and CEC. Pyrolysis temperature of date palm residue along with aging are key factors in determining the potential benefit of BC derived from date palm residues added to sandy desert soil.Item Advances in mapping sub-canopy snow depth with unmanned aerial vehicles using structure from motion and lidar techniques(Copernicus Publications on behalf of the European Geosciences Union, 2019) Harder, Phillip; Pomeroy, John; Helgason, Warren D.Vegetation has a tremendous influence on snow processes and snowpack dynamics yet remote sensing techniques to resolve the spatial variability of sub-canopy snow depth are lacking. Unmanned Aerial Vehicles (UAV) have had recent widespread application to capture high resolution information on snow processes and are herein applied to the sub-canopy snow depth challenge. Previous demonstrations of snow depth mapping with UAV Structure from Motion (SfM) and airborne lidar have focussed on non-vegetated surfaces or reported large errors in the presence of vegetation. In contrast, UAV-lidar systems have high-density point clouds, measure returns from a wide range of scan angles, and so have a greater likelihood of successfully sensing the sub-canopy snow depth. The effectiveness of UAV-lidar and UAV-SfM in mapping snow depth in both open and forested terrain was tested in a 2019 field campaign in the Canadian Rockies Hydrological Observatory, Alberta and at Canadian Prairie sites near Saskatoon, Saskatchewan, Canada. Only UAV-lidar could successfully measure the sub-canopy snow surface with reliable sub-canopy point coverage, and consistent error metrics (RMSE <0.17m and bias -0.03m to -0.13m). Relative to UAV-lidar, UAV-SfM did not consistently sense the sub-canopy snow surface, the interpolation needed to account for point cloud gaps introduced interpolation artefacts, and error metrics demonstrate relatively large variability (RMSE <0.33m and bias 0.08 m to -0.14m). With the demonstration of sub-canopy snow depth mapping capabilities a number of early applications are presented to showcase the ability of UAV-lidar to effectively quantify the many multiscale snow processes defining snowpack dynamics in mountain and prairie environments.Item Aid when ‘there is nothing left to offer’: Experiences of palliative care and palliative care needs in humanitarian crises(Public Library of Science, 2023-02-01) Schwartz, Lisa; Nouvet, Elysee; de Laat, Sonya; Yantzi, Rachel; Wahoush, Olive ; Khater, Wejdan A.; Rwililiza, Emmanuel Musoni; Siam, Ibraheem Abu; Krishnaraj, Gautham; Amir, Takhliq; Bezanson, Kevin; Schuster Wallace, Corinne; Sow, Oumou Bah; Diallo, Alpha Ahmadou; Diallo, Fatoumata Binta; Elit, Laurie; Bernard, Carrie; Hunt, MatthewAccess to palliative care, and more specifically the alleviation of avoidable physical and psychosocial suffering is increasingly recognized as a necessary component of humanitarian response. Palliative approaches to care can meet the needs of patients for whom curative treatment may not be the aim, not just at the very end of life but alleviation of suffering more broadly. In the past several years many organizations and sectoral initiatives have taken steps to develop guidance and policies to support integration of palliative care. However, it is still regarded by many as unfeasible or aspirational in crisis contexts; particularly where care for persons with life threatening conditions or injuries is logistically, legally, and ethically challenging. This article presents a synthesis of findings from five qualitative sub-studies within a research program on palliative care provision in humanitarian crises that sought to better understand the ethical and practical dimensions of humanitarian organizations integrating palliative care into emergency responses. Our multi-disciplinary, multi-national team held 98 in-depth semi-structured interviews with people with experiences in natural disasters, refugee camps in Rwanda and Jordan, and in Ebola Treatment Centers in Guinea. Participants included patients, family members, health care workers, and other staff of humanitarian agencies. We identified four themes from descriptions of the struggles and successes of applying palliative care in humanitarian settings: justification and integration of palliative care into humanitarian response, contextualizing palliative care approaches to crisis settings, the importance of being attentive to the ‘situatedness of dying’, and the need for retaining a holistic approach to care. We discuss these findings in relation to the ideals embraced in palliative care and corresponding humanitarian values, concluding that palliative care in humanitarian response is essential for responding to avoidable pain and suffering in humanitarian settings.