Tyrimo tikslas. Įvertinti merginų informuotumą apie ultravioletinės spinduliuotės poveikį sveikatai bei sąsajas su deginimosi elgsena Tyrimo metodika. Tyrimas atliktas 2013 - 2014 m. Tyrime dalyvavo Kauno kolegijos Medicinos fakulteto I ir II kurso studentės. Iš viso buvo išdalinta 580 anketų. Duomenys analizuoti naudojant SPSS 20.0 programa, lyginant studenčių deginimosi saulėje įpročius, soliariumų naudojimo ir požiūrio bei žinių apie ultravioletinius spindulius kintamuosius pagal χ2 kriterijų. Skirtumas statistiškai reikšmingas, kai pasikliovimo lygmuo p<0,05. Tyrimo metodas – anoniminė anketinė apklausa. Rezultatai: 68,1 proc. studenčių nuomone saulės spinduliai gali sukelti akių pažeidimus - kataraktą. Merginos turinčios jautresnę I-II odos tipą teigia, kad saulės spinduliai sukelia ne tik odos, tačiau ir akių pažeidimus 75,8 proc. Didžioji dalis merginų 67,8 proc.teigė, kad oda raukšlėjasi saulės poveikyje. Statistiškai reikšmingai dažniau I-II odos tipo merginų 89,6 proc. teigė, kad daugėja raukšlių odoje deginantis soliariume negu mažiau jautrią odą turintis III-IV odos tipas. Apie odos senėjimą saulės poveikyje I-II ir III-IV odos tipų merginos teigė, kad saulė mažina odos elastingumą ir spartina senėjimą 87,9 ir 87,1 proc. pigmentinės dėmės suvokiamos kaip neigiamas veiksnys ir 68,1 proc. merginų teigė, kad būtent saulės poveikyje atsiranda įvairūs pakitimai odoje. Statistiškai reikšmingai dažniau III-IV odos tipų merginų 7,1 proc.teigė, kad soliariumo spinduliai... [toliau žr. visą tekstą] / The purpose of the investigation. To assess the effects of exposure of ultraviolet radiation, to the young women's awareness of health and interfaces with tanning behaviors. Methodology of the Study. Study was carried out in 2013-2014 in the study participated I and II course women of Kaunas College of Medicine faculty. A total of 580 questionnaires were handed out. Data analysed using SPSS program 20.0, comparing female students tanning in the Sun habits, attitudes and the use of ultraviolet rays, according to the knowledge of the variables of x2 criteria. The difference statistically significant when the confidence level p < 0,05. A questionnaire - based survey method to anonymous access. Results: 68,1 percent of the female students think, that sun's rays can lead to cataracts-ocular lesions. Girls having more sensitive skin type I-II argues that the sun's rays causes not only the skin, but also violations of eyes 75,8 percent. The most part of girls 67,8 percent claimed that skin wrinkling sun effecting. Statistically significant more often I-II type of skin girls 89,6 percent said that a growing number of wrinkles in the skin scorching solarium than less sensitive skin with skin type III-IV. About the ageing of the skin of the Sun effecting I-II and III- IV skin types girls claimed that the Sun reduces the elasticity of the skin and accelerates the ageing 87,9 and 87,1 percent pigmented spots seen as a negative factor and 68,1 percent of girls said, that a variety of... [to full text]

While modern epitaxial methods enable precise, monolayer (ML) control of the thin film deposition process, the complexity of certain device structures is ultimately limited by the capability and cost of the fabrication process. The objective of this work is to develop a pathway toward three-dimensional epitaxy (3DE) - the ability to intentionally and dynamically pattern regions of a film during the deposition process - in order to enable novel device concepts unbound by the traditional device fabrication paradigm. This work pioneers UV-assisted metal organic molecular beam epitaxy (MOMBE) as a particularly selective epitaxy technique to create a pathway toward 3DE of a crucial and topical material system - the III-Nitrides. A novel UV-assisted MOMBE system is developed enabling intense UV irradiation of films during growth. High quality, heavily (unintentionally) carbon-doped GaN is successfully grown by NH₃-based MOMBE and for the first time InGaN, AlGaN, and magnesium-doped GaN are demonstrated by NH₃-based MOMBE. Intense UV irradiation of films during NH₃-based MOMBE significantly enhances photo-desorption of species during the growth process, subsequently affecting the resultant InGaN alloy composition, carbon dopant concentration, or magnesium dopant concentration. A digital micromirror device is introduced to pattern incident UV radiation during InGaN growth, demonstrating that the effects of photoexcitation during MOMBE which have been proposed, discovered, and identified by this thesis indeed can be leveraged to deposit an InGaN film that is compositionally patterned within the growth plane. The results demonstrate that the new approach presented herein is possible for the 3DE of III-Nitrides if additional challenges in practical implementation can be overcome.

Thesis (Ph. D.)--University of Hawaii at Manoa, 2004. / Includes bibliographical references (leaves 198-219). / Also available by subscription via World Wide Web / xvii, 219 leaves, bound ill., some col. 29 cm

Excess exposure to solar ultraviolet radiation (UVR) is the only readily modifiable skin cancer risk factor, and childhood exposure is implicated in melanoma aetiology. To assist the design and evaluation of child sun protection interventions in the school and community context, this first comprehensive study used electronic monitors to record time-stamped, second-by-second UVR exposure of 325 children (from 28 randomly selected New Zealand primary schools) who kept a diary record of concurrent activities and sun-protective practices and completed a sun-related knowledge, attitudes and usual behaviours questionnaire. School principals and Health promoters (HPs) were interviewed about school and community sun protection efforts. Using the Haddon matrix and Ottawa Charter of Health Promotion to guide research, four potential domains of influence were identified: the physical and social environments, protective products, and host (child). Two key outcomes identified were child UVR exposure and sun-protective practices. A path model was developed where potential influences on these outcomes included school, community, host factors (demographics, skin type, sun-related attitudes, and sun-related knowledge), and pattern of concurrent outdoor activity. Seven specific hypotheses were defined to investigate the effects of host, school and community factors on UVR exposure, sun-protective practices, and sun-related knowledge, attitudes and behaviours. To test for the effects of host factors, day of the week and activity on UVR exposure and sun-protective practices, linear mixed models containing these factors and interactions between Year level-sex, activity-Year level and activity-sex, accounting for clustering within schools and allowing for repeated measures, were applied. Logistic regression with a random school effect was used to assess differences in scored student questionnaire items. Structural equation modelling was implemented to consider associations between sun-related knowledge, attitudes and behaviours, and other explanatory factors for variations in UVR exposure and sun-protective practices. Three of the seven specific hypotheses were supported. There were statistically significant differences in UVR exposure by sex, skin type, day of the week and activity, and sex-activity and Year level-activity interactions. Passive pursuits were associated with the highest UVR exposure rates compared to outdoor active, travel and unclassified pursuits. There were statistically significant differences in sun-protective practices by sex, ethnicity and skin type, and sex-activity and Year level-activity interactions. Girls tended to have higher sun protection scores than boys, but were more likely to sunbathe and use sunscreen. Children identifying with Pacific Island ethnicities had higher scores than children with other ethnicities, and children with Fitzpatrick skin types I and II had higher scores than children with skin types III, IV and V. School and community factors were not associated with UVR exposure, sun-protective practices, sun-related knowledge, attitudes and behaviours, but school and HPs� scores were relatively high, reflecting the significant time and effort spent promoting youth sun protection. Trends for Year level indicated that whereas child sun-related knowledge increased with Year level, attitudes and behaviours supportive of sun protection declined. When considering sun-related knowledge, attitudes and behaviours simultaneously, knowledge was only significantly associated with behaviours when mediated by attitudes. The study findings have implications for child sun protection interventions.

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Errata sheet pasted opposite Table of Contents. / Includes bibliographies. / 142, [171] leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / This thesis investigates the UV-induced inhibition of oriC initiation function and the nature of the phenotype of the mutant origin of replication of Escherichia coli, oriCc. The specific aims of this study are to delineate the source of the UV-induced trans-acting inhibition of oriC function, utilizing the phage vector [lambda]poriCc, and to demonstrate the oriCc allele as an enhanced DNA replication initiator from oriC. / Thesis (Ph.D.)--University of Adelaide, Dept. of Biochemistry, 1997?

Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv. / Härtill 5 uppsatser.

Thesis (Ph.D.)--University of Wollongong, 2005. / Typescript. Includes bibliographical references: p. [183]-210.

Thesis (Ph.D.)--University of Wollongong, 2005. / Typescript. EMBARGOED - This thesis is subject to a 12 month embargo (07/03/06 to 07/03/07) and may only be viewed and copied with the permission of the author. For further information please Contact the Archivist. Includes bibliographical references: leaf 236-266.

Thesis (Ph.D.)--Ohio University, March, 2009. / Release of full electronic text on OhioLINK has been delayed until April 1, 2010. Includes bibliographical references (leaves 70-91)