47 research outputs found
[Epidemiology of oral cavity cancers in France].
No full textINTRODUCTION: We had for objective to describe the updated epidemiology of oral cancers in France. MATERIAL AND METHODS: Estimates made from data collected from various French cancer institutions. The distribution by topography, histology, regions, mean age, and specific incidence rates were calculated from the collected data. The survival data was taken from the Francim network studies. RESULTS: Approximately 7000 oral cavity cancers were diagnosed in France in 2005. In 2007, 1746 people died of that cancer. Standardized (world population) incidence rates are respectively, in men and women, 12.3 and 3.0 cases per 100,000 person-years. These cancers have significantly decreased in men: the standardized incidence rate decreased by 43.2% between 1980 and 2005. Among women, the trend is reversed with an increased incidence of 51.7% over the same period. CONCLUSION: In France, the incidence of oral cavity cancers has been strongly decreasing in men and strongly increasing in women. This trend should be compared to the frequency of the main risk factors: alcohol and tobacco
Incidence trends for potentially human papillomavirus-related and -unrelated head and neck cancers in France using population-based cancer registries data: 1980-2012.
No full text: Human papillomavirus (HPV) has been recently recognised as a carcinogenic factor for a subset of head and neck cancers (HNC). In Europe, France has one of the highest incidence rates of HNC. The aim of this study is to explore changes in HNC incidence in France, potentially in relation with infection by HPV. HNC were classified into two anatomical groups: potentially HPV-related and HPV-unrelated. Trends over the period 1980-2012 were analysed by an age-period-cohort model based on data from eleven French cancer registries. Among men, the age-standardised incidence rate (ASR) of HNC decreased in both groups, but less so for HPV-related sites as compared to unrelated sites, especially in recent years (annual percentage change [APC] over the period 2005-2012: -3.5% vs. -5.4%). Among women, the ASR increased in both groups, but more rapidly for HPV-related as compared to unrelated sites (APC over the period 2005-2012: +1.9% vs. -0.4%). This preferential growth of HPV-related versus unrelated HNC was observed in the cohorts born from 1930 to 1935. The differences in trends between possible HPV-related and HPV-unrelated sites suggest an increasing incidence of HNC due to HPV infection. The difference was less marked in men as compared to women, most likely because of a higher contamination in the HPV-related group by cancers due to tobacco or alcohol consumption. The pattern observed is consistent with observations made in other countries, with studies of HPV prevalence in HNC and the evolution of sexual behaviour in France.<br/
Estudo da relação entre a geração de resíduos sólidos domiciliares e o consumo de água e energia elétrica: alternativas de tarifação da coleta de resíduos sólidos
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Ambiental, Florianópolis, 2012O município de Florianópolis, assim como vários municípios brasileiros, enfrenta dificuldades relacionadas ao financiamento dos custos decorrentes do gerenciamento dos resíduos sólidos, uma vez que a arrecadação através da taxa de coleta de lixo, cobrada junto ao IPTU, é insuficiente para financiar todas as despesas do sistema. Este trabalho tem como objetivo avaliar as relações existentes entre o consumo de água e o consumo de energia elétrica com a geração de resíduos sólidos domiciliares visando uma nova base de cálculo para a determinação do valor da "tarifa de resíduos sólidos domiciliares" para o município de Florianópolis. A metodologia utilizada consistiu na pesagem diária de RSD, leitura do consumo de água e de energia elétrica em dois edifícios residenciais multifamiliares, além da obtenção de dados mensais da geração de RSD e consumo de água e energia elétrica de duas regiões do município. Os resultados encontrados indicam uma taxa de geração per capita de RSD de 0,9 kg/habitante/dia para as regiões estudadas e de 0,6 kg/habitante/dia para os condomínios multifamiliares. Os resultados também mostraram fortes relações entre o consumo de água e o consumo de energia elétrica com a geração de RSD, quando os dados foram tratados de forma agrupada, por faixas de consumo, mostrando ser possível estimar a quantidade de RSD gerada por uma edificação a partir do seu consumo de água ou de energia elétrica.Abstract : The municipality of Florianópolis, as well as many municipalities, is facing difficulties related to financing the costs of solid waste management, since the collection by the garbage collection fee, charged by the property tax, is insufficient to fund all expenses system. This study aims to evaluate the relationship between water and energy consumption with the production of municipal solid waste towards a new basis of calculation for determining the value of "solid waste fee" for the city of Florianópolis. The methodology consisted of daily weighing of RSW, reading of water consumption and electricity in two multifamily residential buildings, in addition to obtaining monthly data of MSW generation and consumption of water and electricity in two regions of the municipality. The results indicate a rate of RSW per capita generation of 0.9 kg / capita / day for the regions studied and 0.6 kg / capita / day for multifamily condominiums. The results also showed a strong relationship between water consumption and electricity consumption with the generation of solid waste, when data were pooled treated for consumption ranges, showing it is possible to estimate the amount of RSD generated by a building from their water or electricity
[Accepted Manuscript] Effect of previous history of cancer on survival of patients with a second cancer of the head and neck.
No full textTo provide head and neck squamous cell carcinoma (HNSCC) survival estimates with respect to patient previous history of cancer.
Data from ten French population-based cancer registries were used to establish a cohort of all male patients presenting with a HNSCC diagnosed between 1989 and 2004. Vital status was updated until December 31, 2007. The 5-year overall and net survival estimates were assessed using the Kaplan-Meier and Pohar-Perme estimators, respectively. Multivariate Cox regression models were used to assess the effect of cancer history adjusted for age and year of HNSCC diagnosis.
Among the cases of HNSCC, 5553 were localized in the oral cavity, 3646 in the oropharynx, 3793 in the hypopharynx and 4550 in the larynx. From 11.0% to 16.8% of patients presented with a previous history of cancer according to HNSCC. Overall and net survival were closely tied to the presence, or not, of a previous cancer. For example, for carcinoma of the oral cavity, the five-year overall survival was 14.0%, 5.9% and 36.7% in case of previous lung cancer, oesophagus cancer or no cancer history, respectively. Multivariate analyses showed that previous history of cancer was a prognosis factor independent of age and year of diagnosis (p<.001).
Previous history of cancer is strongly associated with survival among HNSCC patients. Survival estimates based on patients' previous history of cancer will enable clinicians to assess more precisely the prognosis of their patients with respect to this major comorbid condition
Modalités de prise en charge des adolescents atteints de cancer en France de 1988 à 1997.
No full textQualité de vie à long terme après un cancer du sein en France : étude comparative à partir de trois registres de cancer.
No full textMerkel cell carcinoma in France: a registries-based, comprehensive epidemiological survey
No full textInternational audienc
Produção e caracterização de membranas cerâmicas mistas para separação de oxigênio
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Florianópolis, 2013.Nesta dissertação foram produzidas membranas de condução mista iônica-eletrônica (MIEC) com estrutura perovskita. Esse tipo de membrana cerâmica possui a capacidade de separar seletivamente o oxigênio do ar ou de outras misturas gasosas contendo oxigênio através de processos iônicos e eletrônicos, onde o oxigênio do ar é permeado pela membrana de forma iônica, enquanto que elétrons caminham no sentido contrário para manter a neutralidade elétrica da membrana. Membranas com a composição do tipo BSCF 5582 com três diferentes espessuras foram produzidas pelo método Pechini modificado (sol-gel com rota de complexação EDTA-citrato) e submetidas à análise de caracterização para confirmar sua estrutura, propriedades e condução. Fatores que alteram a permeação de oxigênio, como gradiente de pressão parcial de oxigênio, espessura, temperatura e composição do material, foram estudados para melhor compreensão do funcionamento das membranas. Outros fatores que aumentam o desempenho das membranas, como deposição das membranas sobre substratos porosos, deposição de camadas catalíticas e substituição parcial da composição original por outros elementos, também foram estudados. Padrões de difração de raios-X mostraram a formação de uma estrutura cristalina do tipo cúbica. As micrografias de amostras sinterizadas mostraram baixa porosidade e diâmetro médio de grãos de 10 ?m. Fluxos de permeação de oxigênio foram medidos entre 700 e 900°C, atingindo um valor máximo de 2,38 ml?min-1?cm-2 a 900°C para uma membrana MIEC com 1,02 mm de espessura e fluxo de gás de arraste (Ar) de 100 ml?min-1. Análises termogravimétrica e iodométrica possibilitaram o cálculo do teor de vacâncias de oxigênio a temperatura ambiente, chegando à composição final de Ba0,5Sr0,5Co0,8Fe0,2O2,6. Abstract: In this thesis mixed ionic-electronic conducting membranes (MIEC) with perovskite structure were produced. This kind of ceramic membrane has the ability to separate selectively oxygen from air or other gas mixtures containing oxygen through electronic and ionic processes, where oxygen from the air is permeated by ionic transport, while electrons move in the opposite direction to maintain the electrical neutrality of the membrane. Thus, these membranes are useful in industrial processes that require oxygen supply. BSCF 5582 membranes with three different thicknesses were produced by modified Pechini method (sol-gel route complexation with citrate-EDTA) and analyzed for characterization to confirm their structure, properties and conduction. Factors that affect the oxygen permeation, such as partial pressure gradient, thickness, material composition and temperature were studied to better understand the functioning of the membranes. Other factors that increase the performance of the membranes, such as deposition of membranes on porous substrates, deposition of catalyst layers and partial substitution of the original composition by other elements were also studied and will serve as a basis for future studies. X-ray diffraction patterns showed the formation of a cubic crystalline structure. The micrographs of sintered samples showed low porosity and average grain diameter of 10 µm. Oxygen permeation fluxes were measured between 700 and 900°C, reaching a maximum of 2.38 ml ·min-1·cm-2 at 900 ° C for a MIEC membrane with 1.02 mm thickness and sweep gas flow (Argon) of 100 ml·min-1. Thermogravimetric and iodometric analysis allowed the calculation of the oxygen vacancy content at room temperature, reaching the final composition Ba0.5Sr0.5Co0.8Fe0.2O2.6
