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 284 for “"Controlled environment"”.
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Cell migration and alignment on mechanically controlled environment
This thesis studies the effect of mechanically controlled environment on cell migration and alignment in vitro. Understanding such behaviors are necessary to study wound healing of life, metastatic of cancer cells, tissue engineering, and regenerative medicines. First study is a cell migration …
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GroBot : an open-source model for controlled environment agriculture
The growing demand for food challenges our current farming methods, motivating the search for new paradigms for agricultural production. In this work, the GroBot is presented as an open-source model for the fourth agricultural revolution. This indoor cultivation system was fabricated to provide a …
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Controlled environment agriculture vs. conventional agriculture: the break-even point
This thesis assesses the feasibility of Controlled Environment Agriculture (CEA), or vertical farming, in six Canadian cities. Using available literature, data from model-based simulations were extrapolated and analysed against the backdrop of local Canadian energy grids. Scenarios ranging from …
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Monitoring phytoremediation of petroleum hydrocarbon contaminated soils in a closed and controlled environment
… The experiments were conducted in a closed and controlled environment over a 215-230 day period with numerous aspects of the system being monitored including volatilization of PHC from the tree and soil, and microbial activity of the soil.Monitoring data indicated that microbial degradation of …
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Thermoelectric Cooler Based Temperature Controlled Environment Chamber Design for Application in Optical Systems
… temperature. This thesis presents a temperature controlled environment chamber actuated by a thermoelectric cooler. The design of which provides a simple, multi-applicable solution for temperature control in optical devices. The final device is comprised of three sub-areas of design. Each …
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The Effect of Carpet Fiber on the Growth of Dermataphagiodes farniae in a Controlled Environment
… were maintained in the lab, under identical, environmentally controlled conditions for 6 weeks, then the mites were extracted and counted. On the basis of the results of statistical tests run on the study data, the null hypothesis, that there is no difference between the numbers of mites grown …
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An open source controlled environment agriculture platform : exploration of root zone temperature effects and thermal management
A first prototype of a GRObot open source controlled environment agriculture platform was built with air and water temperature control systems. Caesar basil seedlings were grown in the GRObot with a shallow water culture hydroponic system for two-week periods. In the first trial, the root zone …
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Elicitation techniques for the evaluation of speech under stress: Towards a framework for use in a controlled environment
… moving towards voice-activated and voice-controlled systems and devices. Speech recognition and speaker identification algorithms will have to improve and take emotional speech into account. Modelling the influence of stress on speech and voice is of interest to researchers from many …
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The use of daylight in the design of a controlled environment for food production in the Caribbean and other equatorial climates
… addresses the use of daylight in the design of a controlled environment for food production in the Caribbean and other Equatorial climates. An expanding population has put a tremendous burden on the food production industry in these climates. The increasing population in these climates means that …
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The vibration of instrument ball bearings in a controlled environment and the effect of the resulting fretting corrosion on bearing torque
… the vibration frequency and amplitude, the environmental conditions, the characteristics of the material, and the type of lubrication. The present investigation was conducted in order to investigate the effects of frequency and amplitude of axial vibration and the consequent accelerations …
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Irradiance, total nitrogen, and nitrate-N: ammonium-N ratio requirements for optimal edible biomass production of basil
… cultivars of basil (Basilicum ocimum L.) in a controlled-environment production system. Preliminary experiments showed basil required a dark period, but the duration of the dark period was not resolved. Based on our results, canopy-level irradiance should not exceed 500 mumol/m2/s to conserve …
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Characterization of Flax Germplasm for Resistance to Fusarium Wilt Caused by Fusarium oxysporum f. sp. lini
… The objectives of this study were to develop a controlled environment phenotyping method to test flax lines for reaction to flax wilt and screen a recombinant inbred line (RIL) population for reaction to flax wilt under a controlled environment and compare the observations with field evaluations …
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Photovoltaic Emulator Adaptable to Irradiance, Temperature and Panel Specific I-V Curves
… be accurately emulated. A PV emulator provides a controlled environment that is not affected by external factors such as temperature and weather. This allows repeatable conditions on which to test PV equipment, such as inverters, and provides a controlled environment to test an overall PV system. …
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Epidemiology of Ustilago bullata Berk. on Bromus tectorum L. and Implication for Biological Control
… proliferation, host infection in a temperature-controlled environment and in a field setting for eight populations were investigated. The infection success of Ustilago bullata on Bromus tectorum in cultivated fields as a function of seeding date, inoculation method, inoculum density, …
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Comparative Analysis of Physiological Measurements and Environmental Metrics on Predicting Heat Stress Related Events
… between cardiovascular metrics in a workplace environment, however the study did not include the use of a controlled environment as a baseline. This study provides measurements of transepidermal water loss (TEWL), heart rate, body core temperature, and blood pressure in a controlled environment …
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Examining the effect of rotation sequence on biological nitrogen fixation of pulse crops
… affected BNF in pulse crops. Additionally, a controlled environment experiment was performed to determine if stubble quality (i.e., wheat and canola) affected N-mineralization potential before and after a pulse crop was grown. In the field study, an interaction between site and stubble …
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The Application of Debond Length Measurements to Examine the Accuracy of Composite Interface Properties Derived From Fiber Pushout Testing
… at temperatures up to 800$\sp\circ$C and in a controlled environment. Preliminary pushout tests on both a pristine and a transversely fatigued SiC/Ti-6-4 composite were conducted to assess the capabilities of this apparatus. A negligible force was required to slide the fibers in the fatigued …
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Seedling emergence and growth of winter barley as affected by sowing date and sowing depth: a dissertation submitted in partial fulfilment of the requirements for the degree of Bachelor of Agricultural Science with Honours in the University of Canterbury
… (30,60, 90, 120 and 150 mm) was evaluated in a controlled environment experiment. Increasing sowing depth from 30 - 120 mm delayed the duration from sowing to initial emergence by 10 days and reduced final emergence (92% and 5% at 30 mm and 120 mm respectively). No seedlings emerged at 150 mm. …
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Natural Genetic Variation Affecting Calcium Homeostasis
… 1,25(OH)2D, are affected by both genetic and environmental factors.</p> <p>However, the genetic architecture of these phenotypes has not been carefully studied in a controlled environment. Using genetically characterized mouse models in a controlled environment the studies in this dissertation …
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