Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"Mattresses"”.
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Extended producer responsibility as a management practice for waste mattresses in British Columbia
… programs for management of end-of-life mattresses (ELM) is a global challenge for governments. Metro Vancouver is the first Canadian regional government to ban mattresses at local landfills. The next step is for manufacturers and retailers to work with local governments in developing …
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A new standard in testing mattresses for use in x-ray imaging : developing, validating and using a novel method to test x-ray mattresses for pressure ulcer development, radiation dosimetry and image quality
… imaging while lying on a mattress. Therefore, mattresses must have low X-ray attenuation properties to minimise radiation dose to the patient. Mattresses should create no artifacts within the X-ray image, as this may compromise image quality and diagnosis. Finally, mattresses should be …
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Development and Validation of Bench-Level and Manikin Test Methods to Predict Heat Related Comfort Properties of Mattresses.
North Carolina State University Theses Textile Engineering, Chemistry and Science.
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Artificial reef creation using decommissioned pipeline protection structures - environmental performance in the North Sea.
… together with polypropylene rope (“concrete mattresses”). NS decommissioning policy requires complete removal of mattresses. However, with political impetus toward circular economies, the reuse of mattresses, for example as artificial reefs (ARs), has not been investigated. This thesis …
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Optimising the decommissioning of pipeline protection structures in the North Sea
… protection structures, including concrete mattresses, grout bags and rockdump, are used to protect and support pipelines on the seabed. The OSPAR 98/3 decision to ban offshore disposal of decommissioned installations does not cover pipeline protection structures, although current UK …
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Individual cell pressure control in an air mattress for the prevention of the pressure sores
Many kinds of pressure-relieving mattresses have been developed to prevent pressure sores in patients with spinal cord injuries (SCIs) and obesity. Current technology uses alternating air pressure mattress, foam and low pressure mattress for reducing the incidence of pressure sores in SCI and …
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Passive Noise Control in Incubators
… incubator. In the experimental portion, porous mattresses were analyzed to reduce SPL values. These same test scenarios were modeled using the FE software. Using this model, extensive studies were performed on an arrangement of porous mattress materials with simple foam shapes to determine sound …
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Mattress fires and their effect on the destruction and distribution of remains in a house-fire setting
… comparisons demonstrated that remains placed on mattresses burn more completely, with a greater number of skeletal elements being recovered showing advanced degradation. They were also more widely distributed, especially in the areas that collapsed into an underlying space, such as a basement. …
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Fire Hazard of the Contemporary American Home
… Grouping together the items Upholstered Sofas, Mattresses, and Bedding as representing soft furnishings in the house, contribute the second greatest amount of risk. The main Heat Source for these items is Other Open Flame or Smoking Materials
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The Effects of a Gel Mat Stall Surface on the Lying Behavior of Dairy Cattle
… The same cows housed on the foam mats and rubber mattresses spent longer standing. In the second study, non-lactating cows (n=18) in a free stall environment spent more time lying, and had a shorter latency to lie down after entering the gel mat stall. Cows restricted to the foam mat spent the …
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Investigating Vibration Levels in Neonatal Patient Transport
… shaker table. Results demonstrate that custom mattresses decreased the vibration when compared to the currently used Geo-Matrix™ mattress by 2-4 times, and use of a head restraint harness showed a decrease in vibration when compared to the standard five-point harness by 1.7-3.3 times.
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The investigation of early classification of pressure ulcers using computer image analysis for early prognostic assessment
… evidence of the efficacy of two alternating mattresses. A randomised controlled trial of 141 Care of Elderly Patients who were assessed to have Torrance grade 2 and above pressure ulcers (71 on Cairwave, 70 on Nimbus 3). The secondary aim was to determine whether availability of extra …
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Assessing the Relationship between Motivation and Employees performance in Hotel Industry in Zanzibar
… properties e.g refrigerators, blander, fans, mattresses, air conditions and birthday costs being taken by the hotel”. The study recommended that apart from monetary incentives there are a number of other motivational factors that needed to be incorporated to facilitate performance. Refresher …
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Optimising image quality and radiation dose with a focus on geometry and attenuation
… geometry and attenuation considerations from the mattresses and image receptor holder, as well as the lack of AEC, reinforced the importance of optimising this examination. The final three papers focus on neonatal chest imaging within incubators, which presents similar challenges to trolley …
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Strengthening Consumer and Retailer Responsibility for TextileReuse and Donation in Cambridge and Boston
… Following the 2022 Mass DEP ban on disposing mattresses and textiles in municipal trash, there has been an increased emphasis on textile recycling in the two cities. However, existing strategies for textile reuse focus on the actions of individuals and municipalities which is at great odds …
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Undead Bed: Mattress Recycling in Boston
… a waste regulation that bans the disposal of mattresses and box springs at solid waste facilities. The waste ban will take effect while the Massachusetts legislature is working on passing an EPR (Extended Producer Responsibility) bill for mattress waste. This bill would require the mattress …
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The Influence of Non-Financial Incentives on Teacher Performance in Rural Primary Schools in Tanzania: A Case of Kisarawe District
… provision of cooking utensils, beds and mattresses for newly appointed teachers, frequent visits and meetings with fellow teachers to discuss challenges they face. There was also a need to allocate adequate financial resources at Council and community levels in order to increase teachers’ …
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The behaviour of liquid movement in three dimensional weft knitted spacer fabrics
… fabrics can be used for weight dissipation in mattresses to reduce pressure sore development. Weft knitted spacer structures offer patterning possibilities to aid liquid dispersal. Fabrics were engineered with the appropriate choice of yarns and the incorporation of inlay material into the core …
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Modeling full-scale fire test behaviour of polyurethane foams using cone calorimeter data
… products such as upholstered furniture and mattresses. The increased use of these polymeric materials causes fire safety concerns. This has led to the development of various regulations and flammability test standards aimed at addressing the hazards associated with polyurethane foam fires. …
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AP pelvis x-ray imaging on a trolley: the impact of trolley design, mattress design and radiographer practices on image quality and radiation dose
… (CR). Variables explored were two different mattresses, two different image receptor holder positions, three source to image distances (SIDs) and four mAs increments. Image quality was visually evaluated using a 2 alternative forced choice (2AFC) method with a reference image acquired on the …
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