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 35 for “"light environments"”.
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Built-light : analysis and generation of associative natural light environments.
Thesis. 1975. M.Arch.--Massachusetts Institute of Technology. Dept. of Architecture.
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Behavioral and Hormonal Flexibility Across Light Environments in Guppies (Poecilia reticulata)
… may be dramatically influenced by changing environments, and differences in light intensity environments may have important behavioral consequences. One approach to understanding changes in behavior is by studying behavioral syndromes, suites of correlated behaviors reflecting between …
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Strategies to improve C4 photosynthesis, water and resource-use efficiency under different atmospheres, temperatures, and light environments
… variability in stomatal responses to fluctuating light is identified. The complex trait of stomatal closure is shown to be moderately heritable, and is significantly mapped to genetic markers. The coordination of photosynthetic carbon assimilation with stomatal conductance, and its effect on …
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Correlated physiological responses in a bidirectional selection experiment for body weight in chickens
… age. The latter three traits were studied in two light environments, continuous illumination and a ratio of 8 hours light to 16 hours darkness. The dissertation involved two experiments and chickens from the S₁₁, S₁₂, and S₁₃ generations of the high and low weight lines. Blood glutathione, body …
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Distribution of leaf dissection and sclerophylly along microhabitat gradients in pteridophytes of the Cape peninsula
… of leaf structure and its impact in different environments, as they show remarkable variation in leaf dissectedness and sclerophylly, and are able to inhabit a variety of marginal habitats. In this study, ecological and leaf trait data were collected for 17 fern species occurring in Skeleton …
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Effects of Light Availability and Canopy Position on Peach Fruit Quality
… were conducted to determine the influence of light on 'Norman' and 'Cresthaven' peach fruit quality characteristics. Of primary interest was the relationship between ground color and flesh firmness. Light levels were manipulated by use of shade cloth, reflective mulch, and aluminum foil. …
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Growth, photophysiology and photosynthesis of two marine diatoms grown under predictable intra-diel light fluctuations
… studies often neglect this and use a static light environment. Consequently, the way dynamic light environments impact growth and photophysiology of diatoms is poorly understood. To address this, several aspects of photophysiology were measured in the diatoms Thalassiosira pseudonana and …
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The influence of water and light on the physiology and spatial distributions of three shrubs in the Southern Appalachian Mountains
… may be influenced by their tolerances to light and moisture. Greenhouse studies indicate that <i>R. maximum</i> has a 60 % reduction in photosynthesis at water potentials below -1.0 MPa. <i>R. nudiflorum</i> has only a 30 % reduction and <i>K. latifolia</i> has less than 10 % reduction. …
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Effects of turbidity on the kelp Ecklonia radiata
… threat to coastal marine ecosystems. By reducing light available for key benthic primary producers, increasing turbidity has the capacity to restructure marine communities and adversely impact coastal primary production. An important step to mitigating the effects of turbidity on coastal marine …
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Accelerated, graft-based germplasm conservation of American chestnut (Castanea dentata) in the South
… to access. Additionally, the use of high light environments may be able to reduce the generation time needed to develop a population of disease-resistant trees for restoration. As many new American chestnut individuals are required to advance both the current American Chestnut Foundation …
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Cross-Frame Association of Through-Wall Handheld-Radar-Based Detections
… and even recognizing gestures [5] in low-light environments and through walls, cases where conventional vision-based systems fail. Most previous research has involved onsite (edge) gathering of data and offsite (non-edge) processing to produce detections, i.e. the experimental platforms …
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A study of the effect of environmental lighting on growth, reproduction and behavior in turkeys (Meleagris gallopavo)
… to determine the effect of environmental lighting on growth, reproduction and behavior in turkeys. During the growth phase a Large White and a Medium White line of turkeys were reared on an intermittent (2L:2D) or a diurnal (12L:l2D) light regimens under white, red (650 nm) or blue (450 …
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A robust gan-based model for low-light image enhancement and human detection on mobile devices
Detecting people in low-light environments makes it difficult to recognize them with the naked eye, and this can be affected by weather conditions or the time of day. This reduces the reliability of people detection models, as they attempt to detect a shape that is altered by darkness. When the …
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Iron and Prochlorococcus/
… components of photosystem I, the most efficient light-harvesting complex in nature. Yet, we know little of how iron influences microbial diversity and distribution in the open ocean. In this study, we assess the influence of iron on the ecology of the numerically abundant marine cyanobacterium, …
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Environmental Variability and Phenotypic Flexibility in Plants (Illinois)
… to growth in and transfer between growth light intensities was quantified by comparing the treatments at the same biomass. (2) The growth advantage attributable to plasticity in the two light environments was quantified by comparing the growth and assimilation of the high- and low-light …
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The impact of heterogeneity in stomatal anatomical characters on stomatal function and physiology in wheat
… to deal with elevated temperatures and dynamic light environments due to faster stomatal kinetics and higher gs facilitating greater evaporative cooling in well-watered condition, however, where water is less available, higher gs would have deleterious effects; the ‘slow and steady’ approach …
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ADVANCED CMOS SINGLE-PHOTON IMAGER ARCHITECTURES FOR QUANTUM AND SCIENTIFIC IMAGING APPLICATIONS
… ensure robust 3D imaging in harsh, high-ambient-light environments. Collectively, these contributions demonstrate a shift toward "smart" focal plane arrays that alleviate back-end computational burdens and enable next-generation scientific and autonomous applications.
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Adaptive Mechanisms of an Estuarine Synechococcus based on Genomics, Transcriptomics, and Proteomics
… CB0101 has a greater sensitivity to high light intensity, likely due to its adaptation to low light environments. A complete and annotated genome sequence of CB0101 was completed to explore its genetic capacity and to serve as a basis for further molecular analysis. Comparative genomics …
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Characterization of natural variation in steady- and non-steady-state photosynthesis and its underlying mechanisms to improve productivity in rice (Oryza sativa)
… fail to account for the constantly fluctuating light environment that is more commonly seen in agricultural field settings where steady-state conditions seldom occur. Steady-state and non-steady-state photosynthesis were characterized and compared with the aim of understanding underlying …
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