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Showing 1 to 8 of 8 for “"freezing rate"”.
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Microwave freeze-drying of aqueous solutions
… to an aqueous solution, as well as how various freezing rates affect freeze-drying characteristics. Results show that microwave freeze-drying can greatly reduce the time required to freeze-dry an aqueous solution while maintaining a high product quality. The investigation into the effects of …
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Internal frost damage in concrete - experimental studies of destruction mechanisms
… such as concrete quality, moisture content, freezing rate, and duration of freezing temperature were varied independently of each other. The effect of these parameters on formation of ice, and on the behaviour of the concrete during freeze-thaw should be monitored. In this way it was imagined …
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Experimental investigation of soil volume changes during freezing and thawing
… behaviour of soils during freezing and thawing, with focus on frost heave and thaw settlement. Ground freezing is a natural phenomenon that affects civil engineering projects, especially in cold regions or where artificial ground freezing (AGF) is employed. Freezing causes …
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Advances in measuring parameters of the air-void system in hardened concrete
To improve the freezing and thawing resistance of concrete, air bubbles are entrained and distributed evenly and closely. Evaluation of the parameters of the air-void system in hardened concrete is detailed in ASTM C457 “Standard Test Method for Microscopical Determination of Parameters of the …
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Extrusion of Solid Hydrogen
Made available in DSpace on 2017-07-06T18:49:08Z (GMT). No. of bitstreams: 2 Kuhn_Thomas_R_MS.pdf: 16060935 bytes, checksum: eabeaf6e84659f75f53be1c9a0f83fe9 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1977
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Nasal delivery of peptides using powder carriers based on starch/poly(acrylic acid)
… absorption of peptides are described. The strategies which have been described in literature to circumvent the nasal barriers are also mentioned. This research project focused on powder formulations as carriers for the nasal delivery of peptides, aiming to improve the nasal bioavailability by …
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Bulk deposition of pesticide mixtures in a Canadian prairie city and the influence of soil temperature fluctuations on 17β-estradiol mineralization
… fluctuations do not greatly affect the amount or rate of mineralization relative to the traditionally constant laboratory incubations of 20°C; however long-term freezing of soil reduced potential mineralization over time. This research advances scientific knowledge of agri-chemical fate and …