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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 148 for “"light conditions"”.
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A comparative analysis of C3 and C4 photosynthesis under dynamic light conditions
… effort. The response of plants to changes in light intensity has been identified as a source of inefficiency for photosynthesis, as in the dynamic environments of the open field, where crop canopies are subject to constantly changing light intensity, lags in photosynthetic responses can amount …
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Experimental investigation of a catalyst under various solar light conditions for hydrogen production.
The light absorption characteristics of the photocatalyst {[Ru(bpy)2(dpp)]2RhBr2}5+ and the photochemical Ru(bpy)2(dpp)2+ is investigated. Extinction coefficient versus wavelength is determined for both a low intensity broad spectrum LED light source and one sun intensity simulated sunlight. …
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Multi-omic profiling of NPQ improved nicotiana tabacum lines under uniform light conditions
… plants from oxidative damage under high light conditions. During the transition from light to shade, photosynthesis is briefly limited based on the rate of NPQ relaxation. Increasing expression of NPQ mediating proteins (VDE, ZEP, & PSBS) using an Arabidopsis T-DNA cassette in Nicotiana …
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The Effect of Light Conditions, Temperature and Growth Regulators on Photoperiodism of Amaranthus Caudatus L
Made available in DSpace on 2015-05-12T17:04:11Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0023411.PDF: 11094491 bytes, checksum: efcafd8daf394aca9e4319a45f156d9e (MD5) Previous issue date: 1957
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Effects of Auditory Stimulation in Low and High Light Conditions on Behavioral and State Organization in Preterm Infants
… of multi-modal stimulation (differing amounts of light and vocal stimulation) on preterm infants' behavioral and state organization. Specifically, we looked at the effects that supplemental vocal stimulation (taped female voice) had when varied in amount of exposure (three times a day versus once …
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Measuring and Comparing Quantum Yield in Two Species of Marine Diatoms Subjected to Constant and Fluctuating Light Conditions
… study was conducted to determine the effects of light fluctuations on the photosynthetic efficiency of marine phytoplankton. Two species, <em>Phaeodactylum tricornutum </em>and <em>Chaetoceros gracile </em>were grown in specialized photobioreactors on a 12-hour:12-hour light:dark cycle. The …
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Influence of light conditions on the dynamics of Tetranychus urticae and its control by the predatory mite Neoseiulus californicus
… This study investigates the impact of LED light exposure on the dynamics of the two-spotted spider mite (Tetranychus urticae) and its control by the predatory mite Neoseiulus californicus. Three light treatments were applied: natural light, 12h LED light and 12h dark, and continuous 24h LED …
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The Role of Nitrogen Absorption and Utilization in Maintaining Lower Leaves of Chrysanthemum Morifolium, Ram. 'Cv. Mountain Peak' Under Low Light Conditions
… morifolium, Ram, 'cv. Mountain Peak' under low light intensity environment. Various growth, quality, and N nutritional measurements were taken at the end of production period and throughout the simulated home environment. In comparison to the other N sources, nitrate was the superior N source …
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Characterising natural genetic variation in dynamic photosynthesis and photoprotection in sorghum
… protecting photosynthetic machinery from excess light energy. Improving the regulation of NPQ in leaves during dynamic light conditions has been identified as a potential route toward increasing photosynthetic efficiency in the world’s most important crops. Prior studies have revealed …
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Light Effects on Plant Chemistry: Implications for Plants and Herbivores
Plants growing in high light conditions respond with allocation of resources to antioxidant and anti-UV compounds. This shift of resources, while drawing from allocation to other purposes, does not necessarily alter the plant's resistance to herbivores.
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Improving visibility of latent stains on dark fabric: dark adaptation and stroboscopic light sources
… in analysis is to examine the item under white light. The next step in examination often involves the use of alternate light sources (ALS) to search for potential biological evidence. Dark adaptation has been suggested as a method to maximize benefits from fluorescent evidence examinations. Dark …
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Influence of nitrogen, reduced irradience and biostimulants on turfgrass growth, superoxide dismutase content and chlorphyll fluorescence
… fertility on turfgrass grown under several light conditions.
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Physiological responses of sun and shade foliage in thinned and unthinned ten-year-old loblolly pine stands
… gas exchange parameters were measured. Full sunlight and stand light conditions for upper (sun) and lower (shade) crown foliage were examined. Xylem water potential, litterfall dynamics and tree growth were monitored. Nutrient availability, chlorophyll content and chlorophyll a/b ratio were …
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Modulation transfer function and the role of focal length of a photogrammetric camera in image generation.
… under various aperture settings, detail size and light conditions. This includes an analysis by graphical methods.
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Genome Scale Metabolic Modelling of Arabidopsis thaliana and Chlamydomonas reinhardtii
… capabilities of the organisms under different conditions. This framework can help develop new insight about operating characteristic of the organism and propose new hypotheses that can be tested experimentally. In order to advance our understanding of photosynthetic metabolism in plants and …
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Patterns of natural regeneration in pine and hardwood forests of the Upper Coastal Plain, Virginia
… shade tolerance classes for analysis. Soil and light conditions were the measured environmental variables. Conditions in gap and non-gap areas within each cover type were compared using the paired-t test. There were few clear distinctions in sapling and seedling densities, or sapling heights …
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The exploration of concepts for projectile toys
… shot or laser bullet" effect when used in low light conditions. Safety, projectile mass, and axially symmetric loading were the greatest issues of concern. The final suggested eDart incorporated a standard DC power connection with a simple mechanical switch. The eDarts reached comparable …
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Horizontal Forest: A Retreat on the AT
… 2x4 lumber models are employed to study the light conditions, patterns, and construction of the wooden screen.
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