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 87 for “"absorbent"”.
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Dynamics of super-absorbent hydrogels
… large swelling or drying strains seen in super-absorbent gels, linear theories fail to predict the dynamics seen in experiments, so we introduce a new `linear-elastic-nonlinear-swelling' theory that linearises with respect to small deviatoric shearing strains but allows for nonlinearity in the …
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Exploring Novel, Hard, Acoustically Absorbent, Materials
… or ceiling material treatment that is more sound absorbent than other common surface treatments. To find a material answer to this desire an impedance tube was used to analyze the mid-frequency octave band absorption coefficients of various re-purposed existing materials and tiles created …
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Super Absorbent Polymers (SAPs) as physical air entrainment in cement mortars
Super absorbent polymers (SAPs) are novel multipurpose materials in concrete technology. This study investigated the potential for using SAPs as a mechanism for physical air entrainment. Mixtures were produced using various quantities of either dry or pre-saturated SAP to replace conventional air …
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The mechanics of fiber-based absorbent evaporative cooling (fbaEC) for transport
… a new evaporative cooling system model using absorbent fabric wrapping in curtain structure on a scaffold for short-term transport and storage was built in a laboratory scale, and a series of laboratory scale experiments to statistically verify the basic concept of the new model were …
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Design of an absorbent and comfortable sanitary napkin for applications in developing countries
Menstrual hygiene is an often-ignored problem in international development: lack of access to sanitation keeps women out of schools and the labor force. Sanitary napkin solutions to this issue normally focus on supply chain and manufacturing. This study aims to look at solutions from a materials …
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Relation between the viscosity of bituminous materials and their ability to penetrate absorbent surfaces
Thesis (B.S.)--Michigan State College of Agriculture and Applied Science, 1930
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Structural Design Inspired by the Multiscale Mechanics of the Lightweight and Energy Absorbent Cuttlebone
Cuttlebone, the endoskeleton of cuttlefish, offers an intriguing biological structural model for designing low-density cellular ceramics with high stiffness and damage tolerance. Cuttlebone is highly porous (porosity ~93%) and lightweight (density less than 20% of seawater), constructed mainly by …
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Properties of Absorbent Polymer Extractants for the Selective Removal of Target Molecules from Fermentation Systems
… insights into the selection of polymeric TPPB absorbents by identifying polymer properties which improve affinity and selectivity toward different fermentation target molecules, especially relatively hydrophilic ones. The future design of purpose-built polymer extractants will benefit from …
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Absorbent Household Materials For The Collection Of Ignitable Liquid Residues From Surfaces Of Varying Porosity
… (GC-MS). In this work, readily available absorbent household materials such as microfiber and paper-based products have shown to be effective in the collection of ILs from non-porous surfaces such as ceramic tile. Fibers from these materials are attached to a solid backing which ensures …
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Oil Dries: A New Absorbent Material For Collection Of Ignitable Liquids From Semi-Porous Material
… For this purpose, two different solid oil dry absorbent materials, Instazorb and MAXXAbsorb, were researched for use of collection of ignitable liquid samples at a fire scene. These oil dries were spiked with different ignitable liquids (Coleman fuel, gasoline, kerosene, and diesel). Isolation …
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Thermal swing membrane based method for CO2 capture from flue gas
… cost and high energy consumption since the absorbent has to be regenerated at a high temperature ~ 120 C. A temperature swing membrane absorption (TSMAB) process was described by Mulukutla et al. (2015) using a novel membrane contactor, novel absorbents and a cyclic process. In this device, …
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Remoção de CO2 do biogás por permeação em membranas
… such as liquid flow rate, temperature, type of absorbent and gas composition. Based on experimental results, a simplified model was developed for gas permeation and contactors, which was used to compare the processes. Gas permeation results indicated that CO2 caused membrane plastification, …
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The reliability of fingerprint pore area in personal identification
… prints. Latent prints were deposited on chosen absorbent and non-absorbent surfaces and developed using Cyanoacrylate and Ninhydrin to determine pore area reproducibility. Photomicrographs of ridged skin were captured directly by focusing under microscope and pore area reproducibility in these …
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Modelling low impact development in the Nose Creek watershed
… three low impact development practices: absorbent landscaping, bioretention/rain gardens, and rainwater capture. These scenarios were then modelled using the City of Calgary Water Balance Spreadsheet. The lowest rainfall runoff percentage (3.2%) was achieved by doubling the soil depth of …
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Characteristics of bloodstains on waterproof fabrics
… interactions have been conducted on laundered, absorbent fabrics. Waterproof fabrics are designed to repel water and protect underlying surfaces from the effects of weather such as rain and snow, often having very different properties from other fabrics. In this research, the characteristics of …
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The application of high capacity ion exchange absorbent material, synthesized from fly ash and acid mine drainage, for the removal of heavy and trace metals from secondary co-disposed process waters
The objective of this study was to investigate the feasibility of the application of low cost high capacity inorganic ion exchange material, synthesized form collected fly ash and acid mine drainage solid residues, for the decontamination of secondary co-disposal process waters, with emphasis on …
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An Evaluation of Tape for the Collection of Ignitable Liquid Residues from Non-Porous and Porous Surfaces
… collection of the ILR, including the use of absorbent materials because they are able to penetrate the pores of the fire debris evidence and achieve a higher collection efficiency. These materials have included granular minerals, hydrophobic absorbent pads, or everyday absorbers such as paper …
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Enhancing Gas Absorption with Nanoengineered Surfaces for Bubble Manipulation
Efficiently reacting gases with liquid absorbents is a crucial aspect of numerous industrial processes on a large scale. When the gas phase is in the form of discrete bubbles within an absorber unit, such as in bubble column absorbers or gas sparging systems, the effectiveness of these bubbles' …
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