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 13 of 13 for “"Levels of light"”.
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Aspects of the feeding behaviour of intensively reared trout
Feeding behaviour of trained rainbow trout was investigated by the use of demand feeders, under different light conditions. The effects of the energy content of diet, and the size, colour and texture of feed pellets, on the feeding behaviour, were studied. An attempt was made to locate the assumed …
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Ferns as a forest farming crop: effects of light levels on growth and frond quality of selected speicies with potential in Missouri
In Missouri 11.3 million acres of commercial forests are privately owned. The vast majority is under very little - if any - management. Agroforestry, specifically forest farming, has the potential to provide producers an opportunity to put these acres under management. In forest farming, high-value …
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Aclimatação da maquinaria fotossintética do cafeeiro cultivado em diferentes níveis de luz e de disponibilidade hídrica
… e o metabolismo antioxidativo em plantas de Coffea arabica L. cv. Catuaí Vermelho cultivadas em vasos, utilizando-se de três níveis de irradiância e três níveis de disponibilidade hídrica. De modo geral, não foi observada significância estatística da interação entre os tratamentos hídricos e …
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Unravelling novel molecular targets for photobiomodulation in human hair follicle towards the development of more effective light-based therapies for hair growth
Light and optical techniques have made a profound impact on modern medicine both in diagnostics and in therapy. Therapeutic action of light is based on photomechanical, photothermal, photochemical and photobiological interactions, depending on the wavelength, power density, exposure time and …
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Artificial Night Lighting and Anthropogenic Noise Alter Animal Activity, Body Condition, Species Richness, and Community Structure
<p>Sensory pollution from artificial night-lighting and anthropogenic noise have increased at a dramatic rate over the last several decades. Alterations to the sensory environment have been found to affect wildlife in a wide variety of ways including behavioral changes, physiological responses, …
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Design and Analysis of Whispering Gallery Mode Semiconductor Lasers
… currently prevent the wide spread adoption of WGM lasers as building blocks in large-scale photonic integrated circuits. The first challenge is to reduce the electrical power consumption at desirable levels of light output power. The second target is to obtain directional light emission …
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Impact of Light Pollution on Species Interactions
<p>Over half of the world's population lives in urban areas leading to night skies that are substantially degraded by artificial lights. Yet, we know little about how light pollution affects the surrounding natural communities. What we do know focuses on the impact of light pollution on individual …
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Light Transmission Properties of Lentil (Lens culinaris Medik.) Seed Coat and Effect of Light Exposure on Cotyledon Quality
Cotyledon color is one of the most important quality criteria in the lentil market because the color may correlate well with other quality attributes. Therefore, cotyledon color is an important quality criterion in lentil breeding programs. The objectives of this work were to investigate the …
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The Light and Water Stress Tolerance of Two Invasive Legumes: <I>Cytisus scoparius</I> (Scotch broom) and <I>Spartium junceum</I> (Spanish broom)
The ability of Cytisus scoparius L. and Spartium junceum L. to acclimate to different levels of light and water stress was studied to understand ecological constraints on distributions of these plants. A reaction norm experimental design was used to determine growth and physiological responses of …
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Association of physical fitness, physical activity and sedentary behaviors with positive and negative affect in children and adolescents
… in youth remains still unknown. The aim of the present study was to examine the influence of physical fitness, physical activity and sedentary time on positive and negative affect in Spanish children and adolescents. The research was carried out as part of the UP & DOWN study. 1490 …
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Immunogenetic Study of Autoimmunity-Associated Variants in Selected TNF Superfamily Genes
… genetics have paved the way for the development of Genome Wide Association Studies (GWAS) in an effort to understand complex traits - including autoimmune diseases such as Multiple Sclerosis (MS). Using unbiased genome screens of affected individuals and appropriately matched controls, these …
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An investigation of chemiluminescent miniaturised analytical systems
This thesis examines the feasibility of using chemiluminescence (CL) for detection in miniaturised analytical systems. The aim of this project was to design a miniaturised device that could potentially be used for the remote sensing of metal ions. The development of miniaturised analytical devices …
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Spatial-temporal patterns in evolutionary ecology and fluid turbulence
"This thesis explores the turbulence of ecosystems, and the ecology of turbulence. Ecosystems and turbulent fluids are both highly non-equilibrium and exhibit spatio-temporal complexity during the course of their evolution. It might seem that they are too complicated to extract universal …