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 10 of 10 for “"head area"”.
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Predicting variations in the areas of circular leaks in water pipes due to changes in pressure
… system pipes are not static, but have areas that vary with pressure. These changes in area affect the way that leakage respond to changes in pressure, and was thus important for municipal engineers to understand. This study focussed on round hole leak openings that can exist as pipe …
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Pressure-based leakage characterisation of bulk pipelines
… in municipal water loss programs. One of the areas that have received relatively little attention is leakage on bulk pipeline systems. Bulk pipelines connect water treatment plants to bulk reservoirs and distribute water from reservoirs to different towns or water supply zones. Bulk pipes may …
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Pre-Historic Landslides on the Southeast Flank of the Uinta Mountains, Utah: Character and Causes of Slope Failure
… are up to 4.6 kilometers long and have an area of approximately 5-9 km². Landslide types include multiple and successive rock slumps, debris slumps and debris flows. Most landslides have a main head scarp in the Bishop Conglomerate and the large landslides have many minor scarps. Multiple …
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Mechanization of the selective harvest of broccoli
… were made on broccoli plants both years. Head height, stalk diameter, and head weight were strongly affected by harvest time and in-row plant spacing. Height and stalk diameter were moderately correlated to head diameter. A regression model for predicting head diameter from height and …
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SUSTAINABILITY, ENERGY AND ANIMAL WELFARE AT SLAUGHTER
… investigated signs of consciousness following head-only electrical stunning in 3047 lambs, using video analysis to correlate these signs with the effectiveness of the stunning process in an industrial abattoir. The systematic review revealed limited research on the practicality of ABMs in both …
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Influence of the female reproductive tract on the motility and morphological characteristics of ram spermatozoa
… had spermatozoa that had a significantly larger head area than others. This result was supported in later studies by manual measurements of the width and length of heads of spermatozoa. Semen was collected each month for 13 months from a group of six rams. A range of measurements of the semen was …
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An evaluation of the pressure-leakage response of selected water distribution networks in South Africa
… as pressure input and QRL as flow input), 12% of head-area slope (m̄) values and 39% of initial leak area (Ā₀) values were negative. The calculated FAVAD N1 values ranged between -0.34 and2,20 (outliers were determined as N1=-31,88 and N1=6,77 but these are not impossible and can be explained …
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Morphological antipredator adaptations in water fleas
… low body drag. The morphology and size of heads and trunks in Daphnia cristata individuals were studied in twenty lakes in the same drainage basin. The lakes showed a variation in lake total phosphorus and in densities of invertebrate predators and fish. In the end of the summer D. cristata …
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A Numerical Study of Internal Flow Effects on Skin Friction Gages
… This type of device uses a small movable head mounted flush to a wall such that the head is assumed to be exposed to the same shear stress from the flow as the surrounding wall. The force caused by the action of the shear stress on the head deflects a flexure system monitored by …