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Introduction: Studies on attitudes and practices are increasingly used but not specifically related to the motivations for the use of reproductive health care among women of fertile age, living in urban areas and in different social contexts. Objectives: The aim of this study was to estimate the associations between the variables of social status (degree of poverty in the studied groups) and the variables of fecundity (representations, tensions, practices and control of fertility) and, in addition, to compare access to health care in the different studied groups, assessing the association between use of maternal health care and poverty in urban areas. Design: A case-control study was conducted in the Municipality of Lisbon, Portugal, with a total sample of 1513 women of fertile age: 499 cases of women considered very poor were selected from the database of beneficiaries of RSI (Social Welfare Payment for Inclusion); 1014 controls (two controls for each selected case), divided as 507 poor women selected from the other beneficiaries of Santa Casa da Misericórdia in Lisbon and 507 non-poor women selected from four Health Centers from the Municipality of Lisbon, Portugal. A total of 1054 women answered the questionnaire: 304 cases (response rate of 61%) and 750 (response rate of 74%) controls. The statistical analysis involved descriptive analysis and multinomial logistic regression. Results: The analysis confirms the association between poverty and patterns and representations of fecun
dity regarding pregnancy planning. The results of this study thus show the existence of different distributions on several variables and the gradients of poverty. Regarding access to health care, the major impact of poverty on women
ZSM-22 was synthesized using various sources of
silica, organic template 1,6-diaminohexane, under hydrothermal conditions, with
and without agitation during crystallization. Subsequently, the crystallized
material was used as seeds to accelerate the crystallization process.
Characterization of the ZSM-22 samples was performed by XRD, ATG/DTG and FT-IR.
It was found that it is possible to synthesize ZSM-22 employing colloidal
silica and pyrolytic silica as silicon sources only if the system is stirred
during crystallization. The crystallization time for these systems was 13
hours, longer times of crystallization do not significantly increase the
crystallinity of the sample. The addition of seeds significantly accelerates
the crystallization of ZSM-22, reducing the crystallization time to only 7
hours, with stirring and with systems employing colloidal silica.