Saudi Cultural Missions Theses & Dissertations
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Item Restricted Exploring the impact on family caregivers of someone living with a haematological neoplasm: systematic review(Queen's University Belfast, 2024-07-07) Alhindi, Razan; Quinn, BarryAbstract: Title: Exploring the impact on family caregivers of someone living with a haematological neoplasm. Background: Haematological neoplasms (including leukaemia, lymphomas, myelomas) present unique challenges due to their often-rapid onset, acute symptoms, and the potential for relapse. As treatment advances and overall survival improves, the number of family caregivers navigating these complexities increases. Understanding the experiences of these caregivers is crucial for further targeted support. Aim: This systematic review aims to synthesise current evidence on the impact on family caregivers of someone living with a hematological neoplasm, identifying key themes and areas for practice and future research. Methodology: Using a systematic literature review approach, evidence was synthesised on the impact on family caregivers of someone living with a hematological neoplasm. The review was conducted using three databases, CINAHL, Medline, and PsycINFO. A total of ten studies met the criteria and were included in this review. Findings: The review revealed three main themes: 1) The positive outcomes of being a family caregiver and developing coping strategies, these include strengthened family bonds, coping through better communication, and support-seeking approaches which contributed to an enhanced experience. 2) Family caregivers face significant emotional and physical disruptions, including, distress, anxiety, uncertainty, insomnia, increased tasks and frequent visits to hospital clinics. 3) Changes occur within the home and family caregivers report lack of support from health care professional and family members, this included changes in family dynamics, undertaking additional responsibilities, and financial changes. Conclusion: Family caregivers of someone living with a hematological neoplasm face complex and challenging experiences. While the role of a family caregiver is often challenging, many caregivers are able to adapt and find positive outcomes from the experience. Future practice should consider this and further research should investigate the efficacy of interventions targeting the specific needs of this population, including a more family centred approach and learning from the positive outcomes, and overcoming challenges.26 0Item Restricted Investigating the Mechanical Characteristics of Clay Contaminated with Engine Oil(University of Technology Sydney, 2024-08-25) Omar, Khalid; Fatahi, BehzadGeotechnical engineers face the challenge of enhancing soil properties impacted by oil contamination, which disrupts the soil's natural composition and negatively affects its physical and mechanical characteristics. Oil-contaminated soils pose environmental hazards to ecosystems, necessitating innovative and environmentally friendly remediation strategies to eliminate hazardous pollutants and facilitate site redevelopment. This study investigates the effects of oil contamination on the mechanical properties of soft clay and its treatment using cement. The influence of pre-contamination moisture content (PMC) on soil contaminated with used engine oil was examined. The mechanical properties of oil-contaminated soil treated with various cement contents (0%, 5%, 10%, and 20%) were investigated. Additionally, the behaviour of low-plasticity clay contaminated with fresh engine oil was studied to understand oil contamination's effects on soil plasticity. An extensive experimental program was implemented, including SEM microstructural analysis, Atterberg limits and linear shrinkage tests, unconfined compressive strength (UCS) testing, bender element analysis, direct shear testing, and amplitude sweep tests. Tests were performed on high and low-plasticity clay mixed with various oil concentrations (0% to 16%), including fresh and used engine oil. Results showed that adding used engine oil with different PMC negatively affected high-plasticity soil, reducing UCS by 64% when oil content increased from 0% to 6%. Linear shrinkage and plastic limit increased while the liquid limit decreased. Similar observations were made in low-plasticity soil contaminated with fresh engine oil, where increasing oil contents increased Atterberg limits. Mechanical properties, including shear strength and shear modulus, decreased with increased contamination contents for both low and high-plasticity soil contaminated with used and fresh engine oil. Cement addition substantially improved the mechanical properties of high-plasticity clay contaminated with oil. Cement significantly increased the liquid limit and linear shrinkage value at various oil contents, enhancing the soil's shear strength, shear modulus, friction angle, and cohesion. Laboratory results showed that treating oil-contaminated soil with cement improves its mechanical properties. Cement hydration creates a gel-like coating that binds particles and reduces permeability, forming a strong matrix that encapsulates oil droplets and slows their mobility. This treatment changes pollutant acidity, pH, and solubility through pozzolanic reactions, improving the mechanical properties of contaminated soil. This thesis thoroughly examines the effects of used and fresh engine oil contamination on soil, focusing on its impact on low and high-plasticity soils. The study also investigates the influence of cement treatment on the mechanical properties of expansive soil contaminated with used engine oil, finding cement stabilization to be a viable remedy for building and roadway infrastructure construction.16 0