973 resultados para 44-390A
Resumo:
http://digitalcommons.fiu.edu/com_images/1049/thumbnail.jpg
Resumo:
General note: Title and date provided by Bettye Lane.
Resumo:
General note: Title and date provided by Bettye Lane.
Resumo:
The delta18O values of planktonic foraminifera increased in the Caribbean by about 0.5? relative to the equatorial East Pacific values between 4.6 and 4.2 Ma as a consequence of the closure of the Central American Gateway (CAG). This increase in delta18O can be interpreted either as an increase in Caribbean sea surface (mixed layer) salinity (SSS) or as a decrease in sea surface temperatures (SST). This problem represents an ideal situation to apply the recently developed paleotemperature proxy delta44/40Ca together with Mg/Ca and d18O on the planktic foraminifer Globigerinoides sacculifer from ODP Site 999. Although differences in absolute temperature calibration of delta44/40Ca and Mg/Ca exist, the general pattern is similar indicating a SST decrease of about 2-3 8C between 4.4 and 4.3 Ma followed by an increase in the same order of magnitude between 4.3 and 4.0 Ma. Correcting the delta18O record for this temperature change and assuming that changes in global ice volume are negligible, the salinity-induced planktonic delta18O signal decreased by about 0.4? between 4.4 and 4.3 Ma and increased by about 0.9? between 4.3 and 4.0 Ma in the Caribbean. The observed temperature and salinity trends are interpreted to reflect the restricted exchange of surface water between the Caribbean and the Pacific in response to the shoaling of the Panamanian Seaway, possibly accompanied by a southward shift of the Intertropical Convergence Zone (ITCZ) between 4.4 and 4.3 Ma. Differences in Mg/Ca- and delta44/40Ca-derived temperatures can be reconciled by corrections for secular variations of the marine Mg/Ca[sw] and delta44/40Ca, a salinity effect on the Mg/Ca ratio and a constant temperature offset of ~2.5 °C between both SST proxy calibrations.
Resumo:
Since submission of the draft report to the OECD‐LEED Program on 30 June 2007, a unique seven‐years retrospective study of the unemployed high technology workers was released by Statistics Canada.1 Drawing upon Statistics Canada’s confidential Longitudinal Worker File – itself constructed from four administrative data sources that linked Records of Employment and tax filer information by the Social Insurance Number and firm‐level data by a company identifier – this study was able to identify and trace the re‐employment of those permanently laid off in the high‐tech industry by location. The findings are stunning.
Resumo:
Act 44/2015, on 14th October, of labour and investee companies, aims to accommodate the different instruments, limits and requirements with which the legal regime of the labour companies is set, to the current economic and legal context where they must develop their economic activity. The purpose of the law is to preserve their special status, while it seeks to modernize its legal structure to ensure the economic solvency of the business plan, without weakening the social profile that is required. The new law includes two organisational figures, ‘labour companies’ and the calling ‘investee companies’, of the last one, only leaving evidence of what is to be understood by them referring its regulation to a subsequent regulatory development. Until the publication of the regulation, our work has focused on the corporate aspect of the labour companies by analysing the modifications made on the typological elements and legal regime of these organisational figures to determine whether the law is the necessary and sufficient instrument to achieve the challenge proposed.
Resumo:
Background: The principal mode of HIV transmission in Southern Africa is through sexual intercourse, and this has prompted uptake of safe male circumcision. Engaging in risky sexual behaviour by circumcised men increases the risks of acquiring HIV, though male circumcision coupled with preventive behaviour reduces this risk. Objective: To compare the factors associated with risky sexual behaviour among circumcised and uncircumcised men in Botswana. Methods: Nationally representative data from the Botswana AIDS Impact Survey III were used. A sample of 313 sexually active men was used. The data was analysed by cross-tabulation and logistic regression. Results: The study revealed that uncircumcised men (odds ratio, 5.711) were more likely to have sex while intoxicated with alcohol compared to circumcised men. Low levels of education (odds ratio, 8.736), urban residency (city/town: odds ratio, 1.238 and urban village: odds ratio, 1.098) were more likely to influence risky behaviour (more than one sexual partner) for circumcised men. The results also show that marital status (never married) (odds ratio, 1.947) influences risky behaviour (having sex while intoxicated with alcohol) among uncircumcised men. Conclusion: Low level of education, place of residence and alcohol consumption influences risky sexual behaviour for both circumcised and uncircumcised men. Policies and programmes should thus focus on the attitudes underlying sexual behaviour.