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.
Results
Showing 1 to 20 of 153 for “"UV Irradiation"”.
-
DNA degradation and repair in Escherichia coli following UV irradiation/
This document only includes an excerpt of the corresponding thesis or dissertation. To request a digital scan of the full text, please contact the Ruth Lilly Medical Library's Interlibrary Loan Department (rlmlill@iu.edu).
-
Effects of UV Irradiation on the Reduction of Bacterial Pathogens and Chemical Indicators of Milk
… of temperature on bacterial reduction in UV irradiated milk was tested. Commercially processed skim, reduced fat (2%), and whole milk samples were inoculated with a naladixic acid resistant E. coli O157:H7 surrogate (ATCC 25922), maintained at or brought to 4oC and 20oC, respectively, and …
-
Study on the performance enhancement of biomedical implants: in vitro test under UV irradiation of titanium anodised in mixed electrolyte
… (SBF) in the dark and under the ultraviolet (UV) irradiation to mimic the reactions that may occur with the human bone-like cells layer. The testing was done to evaluate the apatite’s microstructure, mineralogy, elements and absorption. From the results it was found that higher apatite was …
-
The effect of chemical treatment, fibre length, fibre content and injection moulding parameters to uv irradiation resistance of oil palm fibre reinforced composites
… polymer used in engineering materials expose to UV irradiation, such as automotive parts (car body, bumper, dashboard etc.) which can cause material degradation. Some polymers are used in pure polymer and some of them in composite material. This study has investigated the composite material …
-
Analysis of hairy-rod polyimides for photoalignment
… for nematic liquid crystal alignment by UV irradiation was the aim of this thesis. Homeotropic liquid crystal (LC) alignment was observed for the majority of the in-house synthesised hairy-rod polyimides (PIs). Oblique unpolarised UV irradiation of branched PIs results in pretilted LCs of …
-
Characteristic of renewable polymer incorporated with stabilizer to characterize the endurance to ultra voilet irradiation exposure
… determine the endurance of renewable polymer to UV irradiation exposure. The morphological structure and porosity of renewable polymer shows no significant changes after UV irradiation exposure. As the loading of TiO2 increased (up to 10 % of monomer weight), the thermal degradation temperature …
-
Photo-responsive degradable poly (beta-amino ester) toward non-viral gene delivery
… and promoted DNA release in response to external UV irradiation. Photo-responsive PBAE was synthesized by Michael addition of amines to (2-nitro-1,3-phenylene)bis(methylene) diacrylate (NPBMD) as a UV-responsive segment. Non-responsive PBAE (control polymer) was also synthesized when a …
-
The role of the histone variant H3.3 and its chaperones in the response to DNA damage
… of H3.3 and its chaperones in the response to UV induced DNA damage in a non-transformed, but immortalised, human cell system, the lymphoblastoid line TK6. Using CRISPR-Cas9 genome editing, I created H3.3, ATRX and HIRA knockout mutants and investigated their response to UV irradiation. h3.3 …
-
Development of novel polymeric nanoparticles with tailored architectures and functionalities/
… of these star polymers was achieved by UV irradiation (365 nm). Next, a novel branched norbornene-polystyrene (PS)-polylactide (PLA)-MM was used to create pseudo-alternating copolymers and miktoarm-BASPs. Transmission electron miscroscopy (TEM) of these star polymers revealed …
-
Inactivation mechanisms of adenovirus from exposure to polychromatic ultraviolet light irradiation
Ultraviolet (UV) light is a drinking water treatment technology that has gained popularity as an alternative to control chlorine-resistant pathogens and comply with regulations on disinfection byproduct formation. Human adenovirus (HAdV) is found in water sources around the world and can cause …
-
Photocatalytic Degradation of Perfluorooctanoic Acid in Water by Free and Immobilised ZnO, g-C3N4 and Their Composite under UV and Visible Light Irradiation
… for PFOA degradation, under ultraviolet (UV) irradiation. More interestingly, suspended ZnO nanoparticles showed promising for PFOA degradation under visible light irradiation (unlike In₂O₃ nanoparticles). The probable production of sulphate radicals by the addition of peroxymonosulfate …
-
Crack path selection in microstructurally tailored inhomogeneous polymers
… properties when subjected to ultraviolet (UV) irradiation. It is seen that ECO becomes stiffer but more brittle upon UV irradiation. Material degradation in such polymers enables their use as an environmentally friendly material that can be broken into smaller nontoxic parts under small …
-
Simultaneous removal of sulfur dioxide and nitric oxide from gas streams via combined plasma photolysis
… H$\sb2$SO$\sb4$ and HNO$\sb3$, respectively. UV irradiation is applied to photolyze O$\sb3$ to enhance OH generation. The resulting compounds can then be chemically neutralized with NH$\sb3\sb{\rm (g)}$ and removed from the gas stream by an aerosol particle removal device. Experimental results …
-
Investigation of Color Removal by Chemical Oxidation for Three Reactive Textile Dyes and Spent Textile Dye Wastewater
… of chlorine dioxide (ClO₂), ultraviolet (UV) irradiation, UV in combination with chlorine dioxide (UV/ClO₂), and UV in combination with hydrogen peroxide (UV/H₂O₂) for decolorizing three reactive azo dyes (sultan red, indigo blue and cypress green) and treated textile-manufacturing …
-
The effect of cutaneous vasculature on skin pigmentation
… transwell system 4 C. Preparation of the bEnd.3/HUVECs conditioned medium 4 D. Ultraviolet (UV) irradiation of endothelial cells 5 E. Endothelial tube formation assay model using GeltrexTM Matrix 5 F. Hypoxia treatments 5 G. Melanin content and tyrosinase activity 5 H. Western blot analysis 6 I. …
-
DNA repair in Bacteroides fragilis Bf-2
… for sensitivity to mitomycin C. One mutant (UVS9) showed sensitivity to both mitomycin C and far-UV irradiation. The other (MTC25) was more sensitive to mitomycin C than UVS9, but showed wild-type resistance to UV radiation. Both mutant strains had wild-type resistance to methyl methane …
-
A Study of genetic instability and DNA repair in selected mutants of streptomyces cattleya
… and one, S26, as MMC sensitive. They were also UVr and UVˢ, respectively. The mutants were subjected to UV irradiation in order to obtain UV kill curves. The curves generated for the two MMCʳ mutants showed induction or derepression of a second repair system. In instability studies performed on …
-
Self-amplifying degradable polyurethanes and their upcycling application
… enables basic amine species generation after UV irradiation for amplified degradation of Fmoc carbamate as the base-sensitive moiety in the polymer backbone. 1H NMR analysis indicated that UV irradiation at 365 nm could degrade the photo-sensitive ortho-nitrobenzyl carbamate moiety followed by …
-
Studies on the natural fluorescence of wool and wool grease
… in the nonbleached. Fluorescent lamps and laser irradiation were used to investigate the (different) effects of UV and blue light upon the fluorescence intensity of wool. UV irradiation caused a rapid increase in intensity which was accompanied by a definite protective effect being exhibited by …
-
In vitro bioactivities of anodised titanium in mixtrue of B-Glycerophosphate and calcium acetate for biomedical application
… on the anodised titanium in a shorted time: (1) UV irradiation during in vitro testing and (2) adding additives in electrolyte. After soaked and irradiated with UV in simulated body fluid (SBF) for 7 days, highly crystallised bone-like apatite was fully covered on the anodised surface. …
Page 1 of 8