PROBLEMAS VIVENCIADOS PELAS ADOLESCENTES DURANTE A GESTAÇÃO

Pregnancy in adolescence brings with it serious biological implications, family problems, psychological issues, economic stress, besides the negative social repercussions that affect the adolescent and society as a whole. Consequently, in response to the problem a study was developed with the objective of characterizing the socio-demographic profile of teenage mothers and to aid in the identification of the problems they suffer during pregnancy. The study was descriptive-exploratory, conducted in the Municipality of Massapé-CE, with 20 adolescents all of whom had recently given birth between the period of October 15th to November 30th, 2004. Open-ended and Close-ended questions were asked. The adolescents were all between the ages of 14 and 19 years old, 45% were single, 60% had not finished high school, 50% had family incomes below that of one minimum monthly salary, 60% were in their first pregnancy, 10% had had an abortion. 80% presented biological, emotional, social, and economic problems. This study suggests the application of more interventionary pre-natal assistance for adolescents with the intention of minimizing risks and damages.El embarazo en la adolescencia trae serias implicaciones biológicas, familiares, psicológicas, económicas, además de las implicaciones sociales, que atañen al adolescente y a la sociedad como un todo. Por tanto, ante esta problemática se decidió desarrollar esta investigación con los objetivos de caracterizar el perfil socio-demográfico de las adolescentes embarazadas e identificar los problemas vivenciados por las mismas durante el embarazo. El estudio es del tipo exploratorio-descriptivo, realizado en la sede del municipio de Massapé-CE, con 20 adolescentes puérperas, en el periodo del 15 de Octubre al 30 de Noviembre de 2004. Se utilizó un formulario con preguntas abiertas y cerradas. Las adolescentes están en el periodo de vida entre 14 a 19 años; 45% son solteras; 60% tienen el primario incompleto; 50% tienen renta familiar menor que un sueldo mínimo; 60% se encontraban en el primer embarazo y 10% de las adolescentes tuvieron un aborto anteriormente. 80% presentan problemas de carácter biológico, emocional, social y económico. El estudio nos lleva a sugerir una asistencia pre-natal cada vez más intervencionista para las adolescentes, con el intento de minimizar los riesgos y los daños.A gravidez na adolescência traz sérias implicações biológicas, familiares, psicológicas, econômicas, além das sociais, que atingem o adolescente e a sociedade como um todo. Portanto diante desta problemática decidiu-se desenvolver esta pesquisa com os objetivos de caracterizar o perfil sócio-demográfico das gestantes adolescentes e identificar os problemas vivenciados pelas mesmas durante a gestação. O estudo é do tipo exploratório-descritivo, realizado na sede do município de Massapé-CE, com 20 adolescentes puérperas, no período de 15 de outubro a 30 de novembro de 2004. Utilizou-se um formulário com perguntas abertas e fechadas. As adolescentes estão numa faixa etária de 14 a 19 anos; 45 % são solteiras; 60% tem o ensino fundamental II incompleto; 50% tem renda familiar menor que um salário mínimo; 60% estavam na sua primeira gestação e 10% adolescentes tiveram aborto. Oitenta por cento apresentaram problemas de caráter biológico, emocional, social e econômico. O estudo nos remete a sugerir uma assistência pré-natal cada vez mais intervencionista para as adolescentes, com o intento de minimizar os riscos e os danos

Leisure and innovation: exploring boundaries

Innovation has been widely debated in various fields. However, except for leisure innovation in ageing and digital leisure, scant research has been done on the relationship between leisure and innovation. This article presents an overview of the field by mapping out the areas of innovation and leisure, suggesting also a taxonomy for innovations in leisure. Considering both supply and demand perspectives, a roadmap for future leisure and innovation research condensed into 10 priority areas is proposed

CONCEITO DA PROFUNDIDADE DE MISTURA GERADA PELA AÇÃO DE ONDAS APLICADO À LAGOA DA MANGUEIRA

O termo profundidade de mistura é definido como a profundidade máxima afetada pela onda ao se propagar. Esse conceito é aplicado à lagoa Mangueira, uma lagoa costeira rasa, fechada e sem efeito de maré. Como a profundidade máxima é de 6m e que vento de intensidade superior a 5m/s atingem profundidades superiores a 4,7m na direção mais desfavorável, conclui-se tratar-se de local que dificilmente atinge uma condição de estratificação térmica, devendo ser comum a ressuspensão de sedimentos do fundo

Hermitian symmetric polynomials and CR complexity

Properties of Hermitian forms are used to investigate several natural questions from CR Geometry. To each Hermitian symmetric polynomial we assign a Hermitian form. We study how the signature pairs of two Hermitian forms behave under the polynomial product. We show, except for three trivial cases, that every signature pair can be obtained from the product of two indefinite forms. We provide several new applications to the complexity theory of rational mappings between hyperquadrics, including a stability result about the existence of non-trivial rational mappings from a sphere to a hyperquadric with a given signature pair.Comment: 19 pages, latex, fixed typos, to appear in Journal of Geometric Analysi

The application of big data and AI in the upstream supply chain

The use of Big Data has grown in popularity in organisations to exploit the purpose of their primary data to enhance their competitiveness. In conjunction with the increased use of Big Data, there has also been a growth in the use of Artificial Intelligence (AI) to analyse the vast amounts of data generated and provide a mechanism for locating and constructing useable patterns that organisations can incorporate in their supply chain strategy programme. As these organisations embrace the use of technology and embed this in their supply chain strategy, there are questions as to how this may affect their upstream supply chains especially with regards to how SME’s may be able to cope with the potential changes. There exists the opportunity to conduct further research into this area, mainly focusing on three key industry sectors of aerospace, rail and automotive supply chains.N/

Identification of physical activity and sedentary behaviour dimensions that predict mortality risk in older adults: Development of a machine learning model in the Whitehall II accelerometer sub-study and external validation in the CoLaus study.

Identification of new physical activity (PA) and sedentary behaviour (SB) features relevant for health at older age is important to diversify PA targets in guidelines, as older adults rarely adhere to current recommendations focusing on total duration. We aimed to identify accelerometer-derived dimensions of movement behaviours that predict mortality risk in older populations. We used data on 21 accelerometer-derived features of daily movement behaviours in 3991 participants of the UK-based Whitehall II accelerometer sub-study (25.8% women, 60-83 years, follow-up: 2012-2013 to 2021, mean = 8.3 years). A machine-learning procedure was used to identify core PA and SB features predicting mortality risk and derive a composite score. We estimated the added predictive value of the score compared to traditional sociodemographic, behavioural, and health-related risk factors. External validation in the Switzerland-based CoLaus study (N = 1329, 56.7% women, 60-86 years, follow-up: 2014-2017 to 2021, mean = 3.8 years) was conducted. In total, 11 features related to overall activity level, intensity distribution, bouts duration, frequency, and total duration of PA and SB, were identified as predictors of mortality in older adults and included in a composite score. Both in the derivation and validation cohorts, the score was associated with mortality (hazard ratio = 1.10 (95% confidence interval = 1.05-1.15) and 1.18 (1.10-1.26), respectively) and improved the predictive value of a model including traditional risk factors (increase in C-index = 0.007 (0.002-0.014) and 0.029 (0.002-0.055), respectively). The identified accelerometer-derived PA and SB features, beyond the currently recommended total duration, might be useful for screening of older adults at higher mortality risk and for diversifying PA and SB targets in older populations whose adherence to current guidelines is low. National Institute on Aging; UK Medical Research Council; British Heart Foundation; Wellcome Trust; French National Research Agency; GlaxoSmithKline; Lausanne Faculty of Biology and Medicine; Swiss National Science Foundation

High frequency magnetic behavior through the magnetoimpedance effect in CoFeB/(Ta, Ag, Cu) multilayered ferromagnetic thin films

We studied the dynamics of magnetization through an investigation of the magnetoimpedance effect in CoFeB/(Ta, Ag, Cu) multilayered thin films grown by magnetron sputtering. Impedance measurements were analyzed in terms of the mechanisms responsible for their variations at different frequency intervals and the magnetic and structural properties of the multilayers. Analysis of the mechanisms responsible for magnetoimpedance according to frequency and external magnetic field showed that for the CoFeB/Cu multilayer, ferromagnetic resonance (FMR) contributes significantly to the magnetoimpedance effect at frequencies close to 470 MHz. This frequency is low when compared to the results obtained for CoFeB/Ta and CoFeB/Ag multilayers and is a result of the anisotropy distribution and non-formation of regular bilayers in this sample. The MImax values occurred at different frequencies according to the used non-magnetic metal. Variations between 25% and 30% were seen for a localized frequency band, as in the case of CoFeB/Ta and CoFeB/Ag, as well as for a wide frequency range, in the case of CoFeB/Cu.Comment: 14 pages, 5 figure

Biocompatible hybrids based on nanographene oxide covalently linked to glycolporphyrins: synthesis, characterization and biological evaluation

The major limitation in the development of hybrids based on graphene oxide (GO) and porphyrins is their dispersibility and stability in aqueous systems due to the hydrophobic character induced by porphyrins. Most of the previous approaches reported the direct functionalization of GO with polyethylene glycol (PEG) chains followed by the self-assembly of porphyrins by π-π interactions. Here, new hybrids were prepared using porphyrins previously functionalized with different number/types of glycol branches to be covalently attached through esterification to the carboxyl groups of GO sheets of nanometric dimensions. The number of the glycol chains and its relative position in the porphyrin core showed to be fundamental to improve the hybrids dispersion and stability in aqueous solutions. The best performing hybrids were characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared, UV-Vis absorption and fluorescence spectroscopy. The in vitro biocompatibility assessment of these hybrids was conducted using human Saos-2 cells. Their effects on cell proliferation and viability, the generation of reactive oxygen species as well as the cell morphology after cell uptake were analysed. The results demonstrate the biocompatibility of these hybrid nanomaterials with human Saos-2 cells, which is very promising for future application in biomedicine namely in cancer therapy.publishe

Diabetes as an independent predictor of high atherosclerotic burden assessed by coronary computed tomography angiography: The coronary artery disease equivalent revisited

(1) To study the prevalence and severity of coronary artery disease (CAD) in diabetic patients. (2) To provide a detailed characterization of the coronary atherosclerotic burden, including the localization, degree of stenosis and plaque composition by coronary computed tomography angiography (CCTA). Single center prospective registry including a total of 581 consecutive stable patients (April 2011-March 2012) undergoing CCTA (Dual-source CT) for the evaluation of suspected CAD without previous myocardial infarction or revascularization procedures. Different coronary plaque burden indexes and plaque type and distribution patterns were compared between patients with (n = 85) and without diabetes (n = 496). The prevalence of CAD (any plaque; 74.1 vs. 56 %; p = 0.002) and obstructive CAD (≥50 % stenosis; 31.8 vs. 10.3 %; p<0.001) were significantly higher in diabetic patients. The remaining coronary atherosclerotic burden indexes evaluated (plaque in LM-3v-2v with prox. LAD; SIS; SSS; CT-LeSc) were also significantly higher in diabetic patients. In the per segment analysis, diabetics had a higher percentage of segments with plaque in every vessel (2.6/13.1/7.5/10.5 % for diabetics vs. 1.4/7.1/3.3/4.4 % for nondiabetics for LM, LAD, LCx, RCA respectively; p<0.001 for all) and of both calcified (19.3 vs. 9.2 %, p<0.001) and noncalcified or mixed types (14.4 vs. 7.0 %; p<0.001); the ratio of proximal-to-distal relative plaque distribution (calculated as LM/proximal vs. mid/distal/branches) was lower for diabetics (0.75 vs. 1.04; p = 0.009). Diabetes was an independent predictor of CAD and was also associated with more advanced CAD, evaluated by indexes of coronary atherosclerotic burden. Diabetics had a significantly higher prevalence of plaques in every anatomical subset and for the different plaque composition. In this report, the relative geographic distribution of the plaques within each subgroup, favored a more mid-to-distal localization in the diabetic patients