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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Cutaneous malignant melanoma in the Natal province : an epidemiologic study : reflections upon its aetiology.

Flamment, A. H. January 1985 (has links)
The purpose of the study has been primarily to draw a profile of malignant melanoma in the different population groups inhabiting the Natal Province and Kwa-Zulu, to compare the presentation and incidence of the disease between these groups as well as with similar racial groups in different countries. The data collected then permitted to estimate which parameters were relevant in predicting the course of the disease, as well as the results of surgical and adjuvant therapy, and was utilized in a search for the aetiology of the tumour. / Thesis (M.D.)-University of Natal, Durban, 1985.
42

An investigation of the effect of diet on skin cancer : application of improved measures of dietary exposure /

McNaughton, S. A. January 2002 (has links) (PDF)
Thesis (Ph.D.) - University of Queensland, 2003. / Includes bibliography.
43

A combined confocal imaging and raman spectroscopy microscope for in vivo skin cancer diagnosis

Arrasmith, Christopher Lyman. January 2008 (has links) (PDF)
Thesis (MS)--Montana State University--Bozeman, 2008. / Typescript. Chairperson, Graduate Committee: David L. Dickensheets. Includes bibliographical references (leaves 69-70).
44

Efficacy and action of topical diterpenes from Euphorbia Peplus in non-melanoma skin cancer /

Jones, Brad. January 2002 (has links) (PDF)
Thesis (M.Phil.) - University of Queensland, 2003. / Includes bibliography.
45

Texture and colour for automatic image-based skin lesion analysis

Round, Andrew John January 1998 (has links)
The research presented here considers automatic diagnosis support for skin cancer. The role of computer-based diagnosis, and its value within a primary care situation are examined resulting in synthesis of aims, requirements and properties for an effective system -a system based on digital optical images captured and processed using low-cost commercial computer technology. The issues involved in acquisition of lesion boundaries are discussed. The value of accurate and robust boundaries, in terms of both directly obtainable diagnostic features and in enabling lesion property evaluation, is identified. Previous research has proposed the edge focusing process. This work has addressed the improvement, in terms of potential for future development, evaluation and reuse, of this process through porting it to a highly modular form in the Khoros environment. The role of colour analysis and its value in terms of provision of diagnostically useful features is investigated, and the central importance of segmentation is identified. The fundamental properties of effective segmentation of lesion image colours are identified as a need to reflect human perception of colour similarity and a basis on local regions. A new region-based segmentation technique using data transformed to a perception-uniform colour-space is presented and shown to yield promising results. Finally the use of texture information is discussed. The nature and properties of the large-scale texture of skin patterning and its disruption are investigated and an abstracted representation proposed. A new technique is presented and shown to be effective in extracting the qualities of the skin patterning. Methods for analysing this representation of the patterning to quantify the disruption attributable to the lesion are proposed and developed. The combination of these extraction, analysis and disruption evaluation techniques is shown to be effective in relation to both visual assessment of disruption and diagnostic performance.
46

Antineoplásico potencial: síntese de derivado de salicilato de octila e5-fluoruracila para tratamento do câncer de pele

Zambrano, Vanessa Fabrina [UNESP] 17 August 2006 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:24:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-08-17Bitstream added on 2014-06-13T19:48:18Z : No. of bitstreams: 1 zambrano_vf_me_arafcf.pdf: 924377 bytes, checksum: a7e1fa08a4f4d40ea755014baa9b09cd (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Universidade Estadual Paulista (UNESP) / A incidência do câncer de pele vem aumentando anualmente em homens e em mulheres, tornando-se grave problema se Saúde Pública mundial. Diversos são os fatores que influenciam a formação dos tumores, sendo a radiação ultravioleta um dos principais responsáveis, que vem elevando seu índice graças à redução da camada de ozônio. Ainda assim o câncer de pele poderia ser evitado se as medidas de prevenção fossem tomadas a tempo, como a fotoproteção, cuidados com os horários de exposição ao sol e a detecção precoce dos tumores. Os avanços científicos e tecnológicos têm proporcionado novas abordagens para o desenvolvimento de agentes antineoplásicos e o direcionamento de fármacos a locais de ação específicos, gerando maior eficácia dos tratamentos. Nesta linha, a principal proposta deste trabalho envolve a possibilidade de conjugar as propriedades do fotoprotetor salicilato de octila com a do antineoplásico 5-fluoruracila, por meio do processo de latenciação. Para tanto foi obtido o pró-fármaco succinil octil salicilato de 5- fluoruracila (SOSFlu), a partir de duas etapas sintéticas, cujos compostos foram caracterizados por meio da determinação da faixa de fusão, cromatografia em camada delgada, análises espectroscópicas de infravermelho, de ressonância magnética nuclear de 13C e 1H, determinação dos coeficientes de extinção molar e de partição. Tendo o SOSFlu apresentado melhores valores de coeficientes de extinção molar e de partição em relação ao fotoprotetor salicilato de octila e ao antineoplásico 5-fluoruracila, espera-se que apresente maior efetividade para proteger a pele contra a radiação ultravioleta e maior permeabilidade cutânea. / The incidence of the skin cancer comes increasing annually in men and in women, becoming a serious problem if world Public Health. Several they are the factors that influence the formation of the tumors, being the ultraviolet radiation responsible one of the main ones that comes elevating its index thanks to the reduction of the layer of ozone. Nevertheless the skin cancer could be avoided the prevention measures they were taken on time, as the sunscreem, cares with the schedules of exhibition in the sun and the precocious detection of the tumors. The scientific and technological progresses have been providing new bording for the development of agents antineoplasic and the drug delivery to specific action places, generating larger effectiveness of the treatments. In this line, the main proposal of this work involves the possibility to conjugate the property of the sunscreem octil salicilate with an antineoplasic 5-fluoruracil, by means of the latentiation process. For so much it was obtained pro-drug succinoil octil salicilate of 5-fluoruracil derived of the octil salicilate and 5- fluoruracil, starting from two synthetic stages, whose compositions were characterized by means of analyses IR spectra, melting point determination, thin layer chromatography and 13C and 1H MNR, extinction molar coefficient and partition coefficient. Tends SOSFlu presented better values of coefficients of extinction molar and of partition in relation to the sunscreen octil salicilate and to the antineoplasic 5-fluoruracil, it is waited that presents larger effectiveness to protect the skin against the ultraviolet radiation and larger cutaneous permeability.
47

Investigating the role of iASPP in skin homeostasis and tumourigenesis

Chung, Ho Ki Kathryn January 2014 (has links)
No description available.
48

Dermoscopy: Expanding ‘Scope’ of Practice and Preventing Skin Cancer Deaths

Usatine, Richard, Holt, Jim, Lu, Miranda, Verdieck, Alexandra 05 December 2019 (has links)
In this hands-on preconference workshop, we will introduce dermoscopy, a proven adjunctive tool that increases sensitivity and specificity of melanoma detection and improves diagnostic accuracy for basal and squamous cell carcinomas. Participants will learn how to use a dermatoscope in clinical practice and learn the two-step algorithm to diagnose unknown skin lesions and determine the need for biopsy. Biopsy techniques will be taught with a handson evidence-based approach that can be applied at one’s home institution. Participants will leave with fundamental competence in the use of dermoscopy for early skin cancer detection, improved understanding of biopsy techniques, tools to train others, free apps, Dermoscopedia, online resources, and online and in-person courses.
49

Extended Model for the Early Skin Cancer Detection Using Image Processing

Poma, Jonathan Miguel Campos, Dominguez, Emily Yanira De La Cruz, Armas-Aguirre, Jimmy, Gonzalez, Leonor Gutierrez 01 June 2020 (has links)
El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado. / In this research paper, we proposed an extended model for the early detection of skin cancer... The purpose is reduce the waiting time to obtaining a diagnosis, in addition, the function of the dermatoscope has been digitized by using a Smartphone and magnifying lenses as an accessory the mobile device. The proposed model has five phases: 1. The patient is attended by a general practitioner or nurse previously trained in any health center which has WiFi or mobile network connectivity to record their data and capture the skin lesion that will be analyzed. 2) The image will be in the cloud storage, which at the same time feeds an exclusive access website of dermatologists.3) Images are analyzed in real time using an image recognition service provided by IBM, which is integrated into a cloud-hosted web platform and an-Android application. 4)The result of the image processing is visualized by the dermatologist who makes a remote diagnosis.5) This diagnosis is received by the general practitioner or nurse, responsible for transmitting the diagnosis and treatment to the patient. This model was validated in a group of 60 patients, where 28 suffer from skin cancer in the early stage, 12 in the late stage and 20 are healthy patients, in a network of clinics in Lima, Peru. The obtained result was 97.5% of assertiveness on the analyzed skin lesions and 95% in healthy patients. / Revisión por pares
50

Examination of the Short-Term Efficacy of a Parent-Based Intervention to Prevent Skin Cancer

Turrisi, Rob, Hillhouse, Joel, Heavin, Sarah, Robinson, June, Adams, Malissa, Berry, Jessica 01 August 2004 (has links)
The research evaluated an intervention strategy designed to prevent skin cancer in young adolescents. The intervention used parents as change agents to effectively communicate the risks of skin cancer and encourage their children to avoid high-risk sun-related behaviors while increasing positive sun-safe behaviors. Three hundred and forty parents in two regions of the United States were educated about the dangers of risky sun behaviors and how to convey information about skin cancer prevention to their children. Parents were then encouraged to talk with their children about these issues over a 1-month period prior to the onset of summer. Following this time period, children whose parents received and implemented the intervention materials were compared with a control sample of 129 children. These two groups were matched on age, gender, and school on number of sunburns and sunburn severity, attitudes and beliefs, and sunbathing behavior. Children in the treatment condition differed significantly from controls in the predicted directions on all outcome variables. The findings are discussed in terms of reducing skin cancer risk behaviors of children via parent-based intervention approaches.

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