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 33 for “"sun exposure"”.
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The Relationship Between Vitamin D Status of Adult Women and Diet, Sun Exposure, Skin Reflectance, Body Composition, and Insulin Sensitivity
… Dietary guidelines, however, do not take sun exposure into account. The present study sought to explore the impact of sun exposure on vitamin D status (serum 25(OH)D), and identify other significant determinants of serum levels which may have the greatest effects on overall health. …
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Evaluation of an Updated Version of the Food Frequency and Sun Exposure Questionnaire for Assessing Vitamin D Status in Active Population
… it can be obtained from both dietary sources and sun exposure. Food Frequency Questionnaires (FFQs) are one of the common methods used to estimate dietary intake. PURPOSE: Develop and validate the semiquantitative Food Frequency and Lifestyle Questionnaires (FFLQs) for assessing vitamin D intake …
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Meta-analysis in cancer epidemiology
… RRs adjusted for confounders not related to sun exposure, such as naevi, were considered for sun exposure and sunburns pooled estimates. Pooled estimates were obtained for all main risk factors for melanoma: sun exposure (total, intermittent and chronic), sunburns (in childhood and in …
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Influência da variação sazonal no status de 25-hidroxivitamina D de adultos com síndrome metabólica de uma região do Brasil com elevados índices de radiação ultravioleta
… influenced by inadequate vitamin D levels, and exposure to sunlight is the main external source of vitamin D. This study assessed the influence of environmental, biological and nutritional factors as a function of seasons on the 25OHD status among individuals with metabolic syndrome. A …
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Process evaluation of a school- and home-based sun safety education intervention
Effective interventions that reduce children's sun exposure are likely to reduce melanoma incidence in the longer term. However, for such interventions to have an impact they must be adequately implemented. School-based sun protection programs have been evaluated to determine their effectiveness in …
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Causal factors of Macrophoma rot observed on Petit Manseng grapes
… stage during the season. A season-long cluster exposure experiment showed that any amount of sun exposure significantly increased Macrophoma rot severity compared to shaded clusters, and that full sun exposure was associated with greatest rot severity. This finding contravenes current management …
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Comparison of quality of life and health behaviors between melanoma survivors and controls
… focusing on quality of life (Manuscript 2) and sun exposure and protection behaviors (Manuscript 3). A total of 592 melanoma survivors and 518 controls completed the survey. Results indicate that long-term survivors of melanoma reported similar general physical and emotional quality of life as …
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SKIN HYDRATION, INJURY PREVALENCE AND FREQUENCY: UNDERSTANDING THE INFLUENCE OF PHYSIOLOGIC, BEHAVIORAL AND DEMOGRAPHIC FACTORS
… injury, such as body mass index (BMI), smoking, sun exposure, and age are not always integrated into study designs. This dissertation provided a secondary analysis of pre-existing data (N = 351) from two parent studies describing injury prevalence and frequency in women following consensual …
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Relationship between sunshine duration and antidepressant consumption in three Northern countries– a pharmacoepidemiologic approach
… of many chronic illnesses, such as depression. Sun exposure is known as the most important source of vitamin D. Unfortunately, people who live in northern regions can be difficult to obtain all vitamin D. With a pharmacoepidemiological approach, this study shows the relationship between sunshine …
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A determination of vitamin D status and intake of pregnant and non-pregnant Saudi Arabian women in Mecca, Saudi Arabia
… occupation, skin color, smoking status, use of sunscreen, use of supplements, and sun exposure were correlated to vitamin D status. Dietary and supplement intake was assessed. Among the participants, 50.8% (35% P, 65% NP) women had 25(OH)D concentration that were ≤ 11 ng/mL. PTH concentrations …
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The Effect of Tree Shade and Snowpack Cover on Pavement Surface Temperature
… resulted in increased interest in the balance of sun exposure andminimum pavement surface temperatures for winter road maintenance. This thesis provides an extensive literature review on tree cover and methods of calculating shade, winter maintenance practices, principles of heat transfer for …
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Examining The Potential For Vitamin D Deficiency In Young Saudi Women Living In Canada: A Qualitative Study
… D sources (supplementation, fortification, and exposure to the sun), attitudes regarding the importance of vitamin D, and practices indicating whether knowledge and attitudes were being implemented or not. The study was conducted in Canada. Eight Saudi women between the ages of 18- 45 y and 10 …
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Understanding of Intrinsic Sources of DNA Damage that Drive Human Disease: A Foray into the Study of DNA Interstrand Crosslinks and Genome-Embedded Ribonucleotides
… and alcohol, ultraviolet (UV) radiation due to sun exposure), to pharmaceutical sources (e.g., chemotherapeutics such as cisplatin). The other main category of DNA damage is endogenous, which can range from metabolites such as reactive oxygen species (ROS) produced in the cells as byproducts of …
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A review of serum 25-hydroxyvitamin D levels in Alaska native and non-natives in southwest Alaska
… 34ºN), low dietary intake of vitamin D, reduced sun exposure, high body mass index, and darker skin pigmentation increase risk for Serum 25-hydroxyvitamin D [25(OH)D] deficiency and insufficiency. <br /><br /> <em>Purposes of the Study:</em> To evaluate the incidence of 25(OH)D insufficiency and …
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Can non-contact SIAscopy be used in the diagnosis and quantification of pigmentary skin changes associated with photodamage?
… of the physiological changes caused by chronic sun exposure on the skin. Measuring the extent of photodamage has always been difficult, with most analysis requiring subjective user interpretation of results. No one available method appears better at clearly identifying and quantifying …
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Primary cutaneous malignancies in the Northern Cape Province of South Africa: A retrospective histopathological review
Background: Excessive sun exposure and high human immunodeficiency virus prevalence increase skin cancer risk in South Africa. Objective: To describe the nature and extent of skin cancers presenting in public and private health sectors of the Northern Cape Province. Methods: A retrospective …
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Effect of Werner and Bloom Helicase Deficiencies On Dna Double-Strand Break Repair
… Patients with this disease obtain rashes after sun exposure and are predisposed to all cancer types. Previous literature has shown that these two helicases do play a role in genome maintenance. However, specific roles in DSB repair are still unclear. This study focuses on WRN's role in …
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Nonlinear models with measurement error: Application to vitamin D
… and supplements; for example, status depends on sun exposure, skin pigmentation, adiposity and several other environmental and physiological factors. A biomarker for vitamin D status is a person's 25-hydroxyvitamin D (or 25(OH)D) serum level. From a practical viewpoint, we cannot make public …
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Mashrabiya in passive cooling: Integrating Concepts of Mashrabiya into an Innovative Ceramic Evaporative Screen
… shading methods are commonly used to reduce sun exposure, existing systems rarely succeed in combining evaporative cooling and shading in a single component. Most approaches prioritise one function at the expense of the other or demand excessive water use, making them impractical for outdoor …
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Human papillomaviruses in skin cancer and cervical cancer
… cell carcinoma (SCC) of the skin and that sun-exposure is a risk factor for cutaneous HPV infection. In the cervical cancer study we found in addition to the exposure to the oncogenic HPV type that is found in the cancer tissue, that history of Chlamydia trachomatis stood out among the …
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