996 resultados para Lynn F. Jacob


Relevância:

10.00% 10.00%

Publicador:

Resumo:

I describe some of the features that characterize the activity and migration of Cory’s shearwater during approximately one year. I also explore the influence of Moon, photoperiod, geographic position and life-history stage on the resulting patterns and the periodicity of the latter. I have principally used time series and regression analysis. Its use here is one of the first applications to the analysis of logger data in seabirds. An intriguing finding of this work is the lunar periodicity that pervades the annual cycle of this species.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Os coeficientes de morbimortalidade infantil apontam alguns fatores aos quais determinados grupos considerados de risco estão expostos, mas não revelam as reais condições de sua qualidade de vida. O presente estudo tem por objetivo descrever os passos percorridos pelas autoras na construção de uma pesquisa qualitativa sobre o modo de vida materno, discutindo aspectos metodológicos referentes ao recorte do objeto e à coleta de dados, em particular, à utilização da técnica de relato oral e as vantagens e dificuldades que esta apresenta. A narrativa das mães possibilita conhecer as necessidades, preocupações e estratégias que elas utilizam para cuidar da saúde dos filhos, bem como, determinações sociais mais amplas de suas condições de existência. Desta forma, o conhecimento gerado é importante para a organização das políticas e práticas sociais desenvolvidas pelo setor saúde.

Relevância:

10.00% 10.00%

Publicador:

Relevância:

10.00% 10.00%

Publicador:

Resumo:

[1] We present new analytical data of major and trace elements for the geological MPI-DING glasses KL2-G, ML3B-G, StHs6/80-G, GOR128-G, GOR132-G, BM90/21-G, T1-G, and ATHO-G. Different analytical methods were used to obtain a large spectrum of major and trace element data, in particular, EPMA, SIMS, LA-ICPMS, and isotope dilution by TIMS and ICPMS. Altogether, more than 60 qualified geochemical laboratories worldwide contributed to the analyses, allowing us to present new reference and information values and their uncertainties ( at 95% confidence level) for up to 74 elements. We complied with the recommendations for the certification of geological reference materials by the International Association of Geoanalysts (IAG). The reference values were derived from the results of 16 independent techniques, including definitive ( isotope dilution) and comparative bulk ( e. g., INAA, ICPMS, SSMS) and microanalytical ( e. g., LA-ICPMS, SIMS, EPMA) methods. Agreement between two or more independent methods and the use of definitive methods provided traceability to the fullest extent possible. We also present new and recently published data for the isotopic compositions of H, B, Li, O, Ca, Sr, Nd, Hf, and Pb. The results were mainly obtained by high-precision bulk techniques, such as TIMS and MC-ICPMS. In addition, LA-ICPMS and SIMS isotope data of B, Li, and Pb are presented.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Validar o modelo teórico"Buscando preservar a integridade da unidade familiar"; aplicando-o à situação da família que vivencia a situação. A coleta de dados decorreu por meio de entrevistas com seis familiares que vivenciaram a experiência de ter um filho que sofreu uma intervenção cirúrgica cardíaca, cujas perguntas foram pautadas no referido modelo, tendo como foco a experiência familiar, durante o tempo da cirurgia cardíaca. Os dados gerados foram analisados de acordo com a Teoria Fundamentada nos Dados. Pela análise comparativa dos resultados dos dois estudos, foi possível validar o modelo teórico para a experiência da família que vivencia a cirurgia cardíaca do filho. Em função da natureza específica da experiência, dois novos temas emergiram: vivendo uma experiência solitária e tendo superado uma etapa, ampliando o modelo teórico original.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Linear response functions are implemented for a vibrational configuration interaction state allowing accurate analytical calculations of pure vibrational contributions to dynamical polarizabilities. Sample calculations are presented for the pure vibrational contributions to the polarizabilities of water and formaldehyde. We discuss the convergence of the results with respect to various details of the vibrational wave function description as well as the potential and property surfaces. We also analyze the frequency dependence of the linear response function and the effect of accounting phenomenologically for the finite lifetime of the excited vibrational states. Finally, we compare the analytical response approach to a sum-over-states approach

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Backgroud: Household service work has been largely absent from occupational health studies. We examine the occupational hazards and health effects identified by immigrant women household service workers. Methods: Exploratory, descriptive study of 46 documented and undocumented immigrant women in household services in Spain, using a phenomenological approach. Data were collected between September 2006 and May 2007 through focus groups and semi-structured individual interviews. Data were separated for analysis by documentation status and sorted using a mixed-generation process. In a second phase of analysis, data on psychosocial hazards were organized using the Copenhagen Psychosocial Questionnaire as a guide. Results: Informants reported a number of environmental, ergonomic and psychosocial hazards and corresponding health effects. Psychosocial hazards were especially strongly present in data. Data on reported hazards were similar by documentation status and varied by several emerging categories: whether participants were primarily cleaners or carers and whether they lived in or outside of the homes of their employers. Documentation status was relevant in terms of empowerment and bargaining, but did not appear to influence work tasks or exposure to hazards directly. Conclusions:Female immigrant household service workers are exposed to a variety of health hazards that could be acted upon by improved legislation, enforcement, and preventive workplace measures, which are discussed.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Background: Spain has recently become an inward migration country. Little is known about the occupational health of immigrant workers. This study aimed to explore the perceptions that immigrant workers in Spain had of their working conditions.Methods: Qualitative, exploratory, descriptive study. Criterion sampling. Data collected between September 2006 and May 2007 through semi-structured focus groups and individual interviews, with a topic guide. One hundred and fifty-eight immigrant workers (90 men/68 women) from Colombia (n = 21), Morocco (n = 39), sub-Saharan Africa (n = 29), Romania (n = 44) and Ecuador (n = 25), who were authorised (documented) or unauthorised (undocumented) residents in five medium to large cities in Spain.Results: Participants described poor working conditions, low pay and health hazards. Perception of hazards appeared to be related to gender and job sector. Informants were highly segregated into jobs by sex, however, so this issue will need further exploration. Undocumented workers described poorer conditions than documented workers, which they attributed to their documentation status. Documented participants also felt vulnerable because of their immigrant status. Informants believed that deficient language skills, non-transferability of their education and training and, most of all, their immigrant status and economic need left them with little choice but to work under poor conditions.Conclusions: The occupational health needs of immigrant workers must be addressed at the job level, while improving the enforcement of existing health and safety regulations. The roles that documentation status and economic need played in these informants' work experiences should be considered and how these may influence health outcomes.