A note about a new method for solving Riccati differential equations

Al Bastami, Belić, and Petrović (2010) proposed a new method to find solutions to some Riccati differential equations. Initially, they obtain a second-order linear ordinary differential equation (ODE) through a standard variable change in the Riccati equation. They then propose a new variable change and discuss the resolution of the resulting ODE in two cases. In the first one, the resulting ODE has constant coefficients. In the second case, they claim that it is possible to arbitrarily choose one of the resulting ODE coefficients and solve particular Riccati ODEs. We show in this work that all Riccati equations that belong to the first case can also be solved by Chini’s method. Furthermore, we show that any Riccati equation fits the second case and that the choice of the resulting ODE coefficients is not free

Cenário XXI at Correio Popular : disclosure of CT&I to Campinas and region

Orientador: Vera Regina Toledo CamargoDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Estudos da LinguagemResumo: A partir da segunda metade do século XX a divulgação científica ganhou maior espaço em todas as mídias. Televisão, rádio, jornais, revistas e, mais recentemente, a internet, passaram a noticiar, ora com euforia, ora com desconfiança, as descobertas da Ciência. Este trabalho analisa a divulgação da produção cientifica na Região Metropolitana de Campinas (RMC) a partir da implementação da serie "Cenário XXI, Conhecimento, Tecnologia e Inovação" no jornal Correio Popular, de Campinas. Esta serie jornalística e constituída por uma serie de suplementos especiais criados em 2003 e por paginas semanais sobre Ciência, caracterizando uma retomada, de forma sistematizada, de uma editoria de Ciência neste jornal. Um dos objetivos da pesquisa é examinar o contexto histórico que possibilita a concepção do projeto e também verificar/identificar que atores participaram e ou determinaram a inserção da divulgação de Ciência pelo Correio Popular nos moldes em que ela foi realizada no período compreendido entre 2003 e 2004. Para a realização dessa pesquisa utilizaremos conceitos do Estudo de Caso e da Analise de Conteúdo com abordagem predominantemente qualitativa, embora recorra a dados quantitativos, de forma complementar. Os Estudos Culturais da Ciência também serão utilizados na analiseAbstract: From the second half of the twentieth century science gained more space in all media. Television, radio, newspapers, magazines and, more recently, the Internet, began to notice, sometimes with elation, sometimes with suspicion, the discoveries of science. This study examines the development of scientific research in the Metropolitan Region of Campinas (RMC) from the implementation of the series "Cenário XXI, Conhecimento, Tecnologia e Inovação", in the newspaper Correio Popular, Campinas. This series consists of a journalistic series of special supplements created in 2003 and weekly pages on Science, featuring a revival, in a systematic way, of an editorial dedicated to science communication. One goal of research is to examine the historical context that allows the project design and to verify / identify which actors participated and led to the inclusion or disclosure of the Correio Popular science communication in the manner in which it was performed in the period between 2003 and 2004. To carry out this research will use case study concepts and content analysis with a predominantly qualitative approach, although recourse to quantitative data in a complementary way. Cultural Studies of Science will also be used in the analysisMestradoDivulgação Científica e CulturalMestre em Divulgação Científica e Cultura

Exploring Spherification with Some Foods of the Mediterranean Diet

The eating habits of the Mediterranean Diet (MD) represent a complete and balanced food model with numerous benefits for health. However, these eating models are deteriorating due to the popularization of foods typical of societies that have less healthy habits. As a result, strategies must be developed to bring consumers closer to the ingredients/food of the MD. Science has made available various ingredients and techniques that have allowed the development of new textures and flavours. The objective of the present study was to explore the possibility of applying the spherification technique, using sodium alginate and calcium gluconolactate, to produce changes in the texture of some foods/ingredients of the MD, developing the following food preparations: A) Liquid core hydrogel table olives (LCHTO) using a macerate and their dilutions, by reverse spherification; B) Wine pearls using liqueur wine (reduced and non-reduced); C) Vinegar pearls using local fig and grape vinegars. The reverse spherification method resulted in adequate LCHTO when the most diluted macerate of table olives (1:4) was selected and the best pearls were obtained when spherification was applied to reduced liquor wine and fig vinegar in 1.0% sodium alginate solution

O ensino superior de enfermagem: implicações da formação profissional para o cuidado transpessoal

This study identifies the perceptions of undergraduate nursing students concerning their education to provide transpersonal care. This qualitative study was conducted in four public universities in Bahia, Brazil with 16 seniors (non-probabilistic sampling) through semi-structured interviews, analyzed through the Collective Subject Discourse. The results expressed the students feelings in the face of the challenge to provide transpersonal care; the psycho-cognitive competencies required by inter-subjective praxis; their perceptions concerning the curriculum in relation to the psycho-emotional dimension of being, untying critical knots; strategies suggested. The final reflections indicate the need to implement changes in the professional education of nurses in order to recover the humanistic view while preserving the scientific view. Undergraduate courses should develop an interactive methodology capable of supporting a more humane, sensitive and inter-subjective care praxis.El estudio buscó conocer las percepciones de estudiantes del Curso de Graduación en Enfermería acerca de su formación para el cuidado transpersonal. Se trata de una investigación cualitativa realizada en cuatro Universidades Públicas de Bahía, con 16 estudiantes del último curso (muestreo no probabilístico), a través de entrevista semiestructurada, analizada por medio del Discurso del Sujeto Colectivo. Los resultados expresaron los sentimientos de los discentes delante del desafío del cuidado transpersonal; las habilidades psicocognitivas necesarias para la praxis intersubjetiva; las percepciones acerca del plan de estudios en relación a la dimensión psicoemocional del ser y el desatar de los nudos críticos - estrategias sugeridas. Las reflexiones finales apuntan para la necesidad de implementar modificaciones en la formación profesional del enfermero, de modo a rescatar la mirada humanística junto al científico. Se sugiere que los cursos de graduación desarrollen una metodología interactiva capaz de subsidiar una praxis de cuidado más humana, sensible e intersubjetiva.O estudo buscou conhecer as percepções de acadêmicos do curso de graduação em Enfermagem acerca de sua formação para o cuidado transpessoal. Trata-se de pesquisa qualitativa, realizada em quatro universidades públicas da Bahia, com 16 formandos (amostragem não probabilística), através de entrevista semiestruturada, analisada por meio do discurso do sujeito coletivo. Os resultados expressaram os sentimentos dos discentes diante do desafio do cuidado transpessoal, as habilidades psicocognitivas necessárias para a práxis intersubjetiva, as percepções acerca da grade curricular em relação à dimensão psicoemocional do ser e o desenovelando dos nós críticos - estratégias sugeridas. As reflexões finais apontam para a necessidade de implementar modificações na formação profissional do enfermeiro, de modo a resgatar o olhar humanístico junto ao científico. Sugere-se que os cursos de graduação desenvolvam metodologia interativa capaz de subsidiar práxis de cuidado mais humana, sensível e intersubjetiva

Monocyte-to-HDL ratio and non-HDL cholesterol were predictors of septic shock in newborns

Background: The association between lipoprotein levels and late-onset neonatal sepsis has shown controversial results. The aims are to assess lipid profile, cytokines, and Monocyte-to-HDL (M/H) ratio as diagnostic and prognostic markers for late-onset neonatal sepsis. Methods: This prospective study included 49 septic neonates and 17 controls. Cholesterol (CT), Triglyceride (TG), Very-Low-Density (VLDLc), Low-Density (LDLc), and High-Density Lipoproteins (HDLc) were measured at admission (D0) and on days 3, 7 and 10 to evaluate septic shock outcomes. Cytokines and monocytes were evaluated by flow cytometry. Results: Septic newborns showed higher IL-6 and IL-8 at D0 and CT levels on D7 and on D10, which also presented higher TG, VLDLc and non-HDL cholesterol concentrations than controls. The septic shock group (n = 22) revealed a higher number of male subjects, CRP, IL-6, IL-8 and IL-10 levels, while lower TG, HDLc, monocyte numbers and M/H ratio at admission compared to the non-shock group (n = 27). M/H ratio and non-HDL cholesterol on D0 were risk factors for septic shock (OR = 0.70, 0.49‒0.99; OR = 0.96, 0.92‒0.99, respectively). Decreasing levels from D0 to D3 of CT (OR = 0.96, 0.93‒0.99), VLDLc (OR = 0.91, 0.85‒0.98), and non-HDL cholesterol (OR = 0.92, 0.87‒0.98) were also predictors of septic shock. Conclusions: Lower M/H ratios and non-HDL cholesterol at admission and decreasing levels of cholesterol, VLDLc and non-HDL cholesterol during a hospital stay are associated with the development of septic shock in newborns with late-onset neonatal sepsis

Tailoring Upconversion and Morphology of Yb/Eu Doped Y2O3 Nanostructures by Acid Composition Mediation

The authors also acknowledge funding from the European Commission through the projects 1D-NEON (H2020-NMP-2015, grant 685758-21D). The work was also partially funded by the Nanomark collaborative project between INCM (Imprensa Nacional-Casa da Moeda) and CENIMAT/i3N. P.A. Carvalho acknowledges support from the Research Council of Norway through grants 275752 and 197405/F50.The present study reports the production of upconverter nanostructures composed by a yttrium oxide host matrix co-doped with ytterbium and europium, i.e., Y2O3:Yb3+/Eu3+. These nanostructures were formed through the dissociation of yttrium, ytterbium and europium oxides using acetic, hydrochloric and nitric acids, followed by a fast hydrothermal method assisted by microwave irradiation and subsequent calcination process. Structural characterization has been carried out by X-ray diffraction (XRD), scanning transmission electron microscopy (STEM) and scanning electron microscopy (SEM) both coupled with energy dispersive X-ray spectroscopy (EDS). The acid used for dissociation of the primary oxides played a crucial role on the morphology of the nanostructures. The acetic-based nanostructures resulted in nanosheets in the micrometer range, with thickness of around 50 nm, while hydrochloric and nitric resulted in sphere-shaped nanostructures. The produced nanostructures revealed a homogeneous distribution of the doping elements. The thermal behaviour of the materials has been investigated with in situ X-Ray diffraction and differential scanning calorimetry (DSC) experiments. Moreover, the optical band gaps of all materials were determined from diffuse reflectance spectroscopy, and their photoluminescence behaviour has been accessed showing significant differences depending on the acid used, which can directly influence their upconversion performance.publishersversionpublishe

Jean-Claude Chamboredon, uma abordagem sociológica pioneira

UIDB/04647/2020 UIDP/04647/2020publishersversionpublishe

Daily portraits of five and six-year old boys: the play activity

Introduction: Daily life experiences provide maturity along human development, and the environments in which they occur are essential for this process. These experiences help to build children’s personalities and the way they deal with the world around them. Objectives: In this study, we aimed to understand the occupational behavior of four children aged five to six years old through their mothers’ reports. Methodology: The average time spent with daily activities is described, and playing was a central theme of analysis. We analyzed the preferences, companies and emotional characteristics of the play activity. We used an Activity Clock and semi-structured interviews with the children’s mothers as data collection instruments. Results: The main results show that most of their daily life time is spent with sleep, school and play activities. They indicate that children prefer games that challenge acquisitions that are under construction. Regarding company, these children still have their mothers as a reference to the play activity, but also peers their age or a little older. Conclusion: Play has an important representation in the daily occupational lives of these children and it stands as a key life experience to acquire skills and face challenges