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 22 for “"light treatment"”.
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Biofilm Control Inside Secondary Water Storage Containers Using UV LIght
… investigates the feasibility of ultraviolet (UV) light treatment for biofilm control inside secondary storage containers used in humanitarian settings. A scoping literature review investigating real‑world UV light treatment application revealed that, even though it is effective beyond controlled …
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Control of sexual maturation and growth in Atlantic cod (Gadus morhua) by use of cold cathode light technology
… present work tests the effect of a Cold Cathode Light system (CCL). The spectral composition of the CCL light penetrates water well and matches the light perception of the cod. The cod were exposed to continuous light from the lamps in cages for two years, while a control group was reared under …
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Investigating optimum wavelength(s) for growth of Lactuca sativa, L. using tunable LED sources and developing thin-film filters for glass greenhouses
… the problem of food shortage by using optimised light irradiation (within the constraints of the experiment) on a sample plant species of lettuce (Lactuca sativa, L.). Whilst lettuce is often grown in hydroponic systems, the current research is conducted in stand-alone pots with hand watering, …
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Light Transmission Properties of Lentil (Lens culinaris Medik.) Seed Coat and Effect of Light Exposure on Cotyledon Quality
… seed coat types and to determine the effect of light treatment, seed coat presence, and seed coat type on color loss in lentil cotyledon. Light transmission properties of seed coat types were obtained to find out if they differ in their light-blocking ability and protection of the underlying …
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Behavioral Response to UVB Differs in Subalpine Populations of Daphnia Melanica
… in their DVM and DHM response to three different light conditions: cool light, low UV, and high UV. As UV increased, the <em>Daphnia</em> showed significantly more pronounced DVM and DHM. There were also significant differences between populations, as well as a significant interaction between …
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The effects of photobiomodulation (PBM) on recovery : a 10-week trial comparing duration of DOMS before and after the use of PBM with the use of BIODEX
… exercise protocol followed by a PBM or placebo light treatment. Muscle strength was objectively measured using a Biodex isokinetic dynamometer, while subjective pain perception was assessed using the McGill Pain Questionnaire. Results suggest that PBM therapy may have a positive effect on …
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An investigation into the light inactivation of medically important microorganisms
… resistance. This study investigated light-based methods for the inactivation of a range of medically important bacteria. Initial investigations involved the design and development of a PUV-light airdisinfection system for the control and prevention of airborne infection. This system …
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The Effect of Xenon Pulsed-Light Technology on Biofilm Adhered to Stainless Steel Surfaces
… dairy products processing. Ultraviolet Pulsed light Technology has shown a positive effect in eliminating microorganism populations on food products. The objective of this work is to evaluate the effect of Pulsed light Technology on a biofilm of different dairy component matrices (e.g. Water …
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Photo-biomodulation of human skin fibroblast sub-populations: a systematic approach for the optimization of optical treatment parameters
… for the optimization of the selection of optical treatment parameters in photobiomodulation of human skin fibroblasts. The project begins with an extensive analysis of 90 bibliographic reports in photobiomodulation published between 1985 and 2015, and revealed major inconsistencies in optical …
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Near infrared light to promote synaptic resilience to Alzheimer’s Disease neuropathology
… the transcranial application of near infrared light (NIR, 600-1000 nm) as a potential treatment for AD. The primary objective of this project was to determine the effect of NIR light treatments (670 nm; 90 sec/day for 4 weeks) on the dysfunctional synaptic impact of oligomers. To achieve this …
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An investigation into the use of High-Intensity Narrow Spectrum light as a decontamination technology
… efficacy of High-Intensity Narrow Spectrum Light (HINS-light) on a wide range of microorganisms using LED arrays that emitted intense 405-nm light. The theorised inactivation mechanism involves 405-nm stimulation of endogenous porphyrins, ultimately leading to production of reactive oxygen …
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Investigation of the Physiology of Hydrogen Production in the Green Alga Chlamydomonas reinhardtii Using Spectral-Selective Photosystem I Light
… I activating/photosystem II deactivating light (PSI-light) method provides a promising platform for commercial hydrogen production systems. The PSI-light method allows electrons to pass through the photosynthetic electron transport chain while reducing radiation available for …
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The Effect of Acute Bright Light Exposure on Social Affiliation
In recent decades, bright light has emerged as a useful tool in numerous clinical and non-clinical applications, with the potential to influence circadian rhythms, sleep, mood, and several other functional domains. However, despite the existence of plausible neurological pathways through which …
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Seeing the light: germination, growth and flowering responses in wildflowers under artificial nighttime lighting
The introduction of artificial nighttime lighting due to human settlements and transport networks is increasingly altering the timing, intensity and spectra of natural light regimes worldwide. Artificial light at night (ALAN) is predicted to constitute a significant anthropogenic pressure on …
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The Effects of Artificial Photoperiod on Age at Puberty in Fall-born Ewe Lambs
… of each replicate and randomized to one of two treatments, control or treated, based on age, weight, breed and type of birth and rearing. Control ewe lambs were housed in a barn with exposure to natural photoperiod from December 16, 2011 until March 24, 2012 in replicate I and from December 17, …
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Effects of Milk Processing on the Milk Fat Globule Membrane Constituents
… changes of the MFGM. Thus, this study highlights the changes that lipids and proteins undergo from the time milk leaves cow’s udders. Cooling (4 °C) was included along with subsequent pasteurization by different traditional thermal processes and cold pasteurization by pulse light ultra …
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Redox Homeostasis in Cyanobacteria
… comprised of redox active intermediates and light harvesting complexes. While oxygen is a necessary byproduct of water oxidation and the source of photosynthetic electrons, its presence is also dangerous because leakage of electrons and excitation energy can interact with molecular oxygen to …
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Effects ofUltraviolet Radiation on Newly Settled Recruits of the Reef-building Coral <em>Porites astreoide</em>
… tanks, and placed under one of three light treatments: PAR+UVA+UVB (280-700 nm), PAR+UVA (320- 700 nm), and PAR (400-700 nm).</p> <p>Health of <em>P. astreoides</em> recruits; measured as survival, change in size, total chlorophyll concentrations and protein levels, was not affected by …
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Metal-cyclam based Metal-Organic Frameworks for CO₂ Chemical Transformations
… catalysts for CO₂ chemical transformations. Highlighted by their high content of active centers, large internal surface areas, tunable pore size, and versatile chemical functionalities, MOFs can serve as highly stable and reusable heterogeneous catalysts and provide a great platform to explore …
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The Function and Regulation of Photobodies in Phytochrome Signaling
<p>Light is a critical environmental signal that regulates every phase of the plant life cycle, from germination to floral initiation. Of the many light receptors in the model plant <italic>Arabidopsis thaliana</italic>, the red- and far-red light-sensing phytochromes (phys) are arguably the best …
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