Characterization of green zero-valent iron nanoparticles produced with tree leaf extracts

In the last decades nanotechnology has become increasingly important because it offers indisputable advantages to almost every area of expertise, including environmental remediation. In this area the synthesis of highly reactive nanomaterials (e.g. zero-valent iron nanoparticles, nZVI) is gaining the attention of the scientific community, service providers and other stakeholders. The synthesis of nZVI by the recently developed green bottom-up method is extremely promising. However, the lack of information about the characteristics of the synthetized particles hinders a wider and more extensive application. This work aims to evaluate the characteristics of nZVI synthesized through the green method using leaves from different trees. Considering the requirements of a product for environmental remediation the following characteristics were studied: size, shape, reactivity and agglomeration tendency. The mulberry and pomegranate leaf extracts produced the smallest nZVIs (5–10 nm), the peach, pear and vine leaf extracts produced the most reactive nZVIs while the ones produced with passion fruit, medlar and cherry extracts did not settle at high nZVI concentrations (931 and 266 ppm). Considering all tests, the nZVIs obtained from medlar and vine leaf extracts are the ones that could present better performances in the environmental remediation. The information gathered in this paper will be useful to choose the most appropriate leaf extracts and operational conditions for the application of the green nZVIs in environmental remediation.

Prevalência da C.trachomatis entre homens que fazem sexo com homens (HSH) que frequentam um centro clínico comunitário alternativo em Barcelona

RESUMO - Enquadramento: A infeção por Chlamydia trachomatis (CT) é considerada um grave problema de Saúde Pública. É causa de infeções sintomáticas tanto no homem como na mulher, bem como, de infeções assintomáticas que podem ter consequências muito graves a longo prazo. A presença de CT sem tratamento aumenta o risco de transmissão do vírus da imunodeficiência humana. Existem vários estudos publicados de prevalência da CT por todo o mundo, no entanto, estudos de prevalência da CT em populações assintomáticas, envolvendo homens que fazem sexo com homens (HSH) são raros na Europa. Assim, o presente estudo, ao estimar a prevalência e ao descrever as caraterísticas epidemiológicas e de conduta dos HSH, pretende contribuir para o plano de ação contra as IST´s e VIH na Catalunha, através de estratégias concretas para deteção e prevenção da CT. Métodos: Trata-se de um estudo observacional, transversal de prevalência da CT em HSH utentes de um serviço comunitário em Barcelona, com recurso a técnicas de diagnóstico de biologia molecular e a um questionário. Durante Março e Junho de 2015, foram recrutados 200 voluntários de um serviço comunitário em Barcelona que foram testados para CT e NG em três locais anatómicos através de uma PCR em tempo real utilizando o ensaio Anyplex™ CT/NG Real-time Detection. Resultados: O presente estudo permitiu uma caraterização da situação atual quanto á prevalência e aos fatores de risco associados á infeção por CT em HSH. A prevalência nesta população específica foi de 12,6% e os fatores risco associados foram o facto de serem VIH e praticarem sexo anal insertivo/recetivo com parceiro estável. Conclusões: Os resultados obtidos reforçam a necessidade do desenvolvimento de estratégias adequadas de controlo e prevenção da CT nesta população de risco, tais como: rastreios frequentes e tratamento dos casos positivos para quebrar a cadeia de transmissão, promoção da saúde, educação e notificação dos parceiros sexuais. Também demonstram a importância destes rastreios nos três locais anatómicos: uretra, reto e faringe.

Construir uma comunidade de aprendizagem: a aprendizagem cooperativa de conteúdos multimédia fomentada por um ambiente promotor da valorização do conhecimento

Relatório de estágio de mestrado em Ensino de Informática

La reincidencia en el programa de mediación y reparación de menores

El estudio actualiza la tasa de reincidencia de los jóvenes que realizaron un programa de mediación i reparación penal juvenil en el año 2008 y a los que se siguió hasta el 30 de junio de 2011 para saber si habían vuelto a reincidir en algún delito, ya fuese como menores o como adultos. Se exponen los resultados tanto del perfil general de los menores, como de las características de los que son reincidentes. El estudio compara también esta intervención con otras medidas o programas como la amonestación, la aplicación del artículo 27.4 de la LORPM 5/2000 de no continuar tramitando el expediente, o las propuestas del equipo técnico respecto a imponer una medida de prestación en beneficio de la comunidad.

Executive Order Number Forty Eight, February 1994

Establish the Iowa Commission for National and Community Service

Executive Order Number Sixty Four, May 18, 1998

Amends Executive Order #48 only by changing the name from the Iowa Commission for National and Community Service to the Iowa Commission on Volunteer Service.

Unmet Needs SFY 2004 Final Report, February 2005

Despite the successes of the Senior Living Program and other efforts of the Iowa Aging Network, there continue to be documented unmet needs throughout the state, in part because of general fund budget reductions. These are needs identified for elderly Iowans that the community service networks are unable to meet. The sources for this data are interdisciplinary teams with the Case Management Program for the Frail Elderly (CMPFE) and service providers under contract with the Area Agencies on Aging.

Unmet Needs SFY 2005 Final Report Version 2 10/26/2005

Despite the successes of the Senior Living Program and other efforts of the Iowa Aging Network, there continue to be documented unmet needs throughout the state, in part because of general fund budget reductions. These are needs identified for elderly Iowans that the community service networks are unable to meet. The sources for this data are interdisciplinary teams with the Case Management Program for the Frail Elderly (CMPFE) and service providers under contract with the Area Agencies on Aging.

Unmet Needs SFY 2006 Final Report, October 2006

Despite the successes of the Senior Living Program and other efforts of the Iowa Aging Network, there continue to be documented unmet needs throughout the state, in part because of general fund budget reductions. These are needs identified for elderly Iowans that the community service networks are unable to meet. The sources for this data are interdisciplinary teams with the Case Management Program for the Frail Elderly (CMPFE) and service providers under contract with the Area Agencies on Aging.

Unmet Needs SFY 2007 Final Report, October 2007

Despite the successes of the Senior Living Program and other efforts of the Iowa Aging Network, there continue to be documented unmet needs throughout the state, in part because of general fund budget reductions. These are needs identified for elderly Iowans that the community service networks are unable to meet. The sources for this data are interdisciplinary teams with the Case Management Program for the Frail Elderly (CMPFE) and service providers under contract with the Area Agencies on Aging.

Unmet Needs Report, July 2006-June 2007

Despite the successes of the Senior Living Program and other efforts of the Iowa Aging Network, there continue to be documented unmet needs throughout the state, in part because of general fund budget reductions. These are needs identified for elderly Iowans that the community service networks are unable to meet. The sources for this data are interdisciplinary teams with the Case Management Program for the Frail Elderly (CMPFE) and service providers under contract with the Area Agencies on Aging. June 2007 Unmet Needs Report May 2007 Unmet Needs Report April 2007 Unmet Needs Report March 2007 Unmet Needs Report February 2007 Unmet Needs Report January 2007 Unmet Needs Report December 2006 Unmet Needs Report November 2006 Unmet Needs Report October 2006 Unmet Needs Report September 2006 Unmet Needs Report August 2006 Unmet Needs Report July 2006 Unmet Needs Report