Biocomposites have gained attention in the packaging industry due to their potential as sustainable alternatives to conventional synthetic materials. In this study, novel cotton incorporated poly(lactic acid)/thermoplastic starch biocomposites were developed for packaging applications using in short shelf life products the extrusion method. Pelletized samples obtained by extrusion were stamped from plates obtained by compression and were characterized through measurement of density, hardness, contact angle and water absorption, as well as Fourier transform infrared spectroscopy (FTIR), thermal analysis and scanning electron microscopy (SEM). No significant changes in the density results were observed. A slight increase in the hardness of formulations in relation to the PLA was associated with the presence of cotton fiber in biocomposites. The FTIR results revealed physical interaction of PLA, TPS and cotton fiber. By DSC analysis, for all formulations the melting exhibited only one peak, suggesting good homogeneity and interaction among the components, as observed by TG/DTG results, and corroborating SEM analysis. The biocomposite PLA/TPS/Cotton 85/10/5 wt.% displayed greater increase in water absorption than both 95/5/0 and 90/5/5 wt.% formulations, which can be attributed to the increase in starch proportion, confirming the contact angle results. The hydrophilic tendency corroborated the biodegradation process in the packaging end-of-life. materials study polylactic poly lactic acid/thermoplastic acidthermoplastic acid /thermoplastic thermoplastic method FTIR, , (FTIR) SEM. . (SEM) peak components TGDTG TG DTG PLATPSCotton Cotton 85105 85 10 5 85/10/ wt wt. 9550 95 0 95/5/ 9055 90 90/5/ proportion endoflife. endoflife end life. end-of-life (FTIR (SEM 8510 8 1 85/10 955 9 95/5 905 90/5 851 85/1 95/ 90/ 85/

Abstract To evaluate the effect of acidic challenge on erosion depth and topographic characteristics of different materials used as occlusal sealants. Two hundred specimens of five sealant materials (Fuji IX, Ketac Molar, Fuji II, Equia and Clinpro) and forty bovine teeth enamel samples (control) were prepared and exposed to acidic challenge. The specimens were immersed in four different solutions (orange juice, coke drink, citric acid or distilled water) under mildly shaken conditions for 3 days. The erosion depth profiles were measured using a profilometer and Scanning Electron Microscope (SEM). Two-way ANOVA with Tukey post-hoc test was performed to evaluate the interactions. Sealant material and acidic challenge had significant effects on erosion depth. Among the materials, Fuji II presented the highest mean of erosion depth after immersion in orange juice, coke drink, and citric acid. All materials groups presented higher erosion depth values after immersion in the citric acid solution, except Clinpro. Bovine enamel presented higher erosion depth values compared to all materials when submitted to erosive challenge. Sealant materials submitted to the acidic challenge presented different degrees of erosion and topographic modification; however, they are less susceptible to erosion than bovine teeth enamel. sealants IX Molar Clinpro control (control juice drink water days SEM. SEM . (SEM) Twoway way posthoc post hoc interactions solution modification however (SEM

RESUMO Objetivos: Avaliar a translucidez, razão de contraste e capacidade de mascaramento de uma zircônia translúcida com diferentes espessuras. Métodos: Espécimes em forma de disco (n= 3) com 10 mm (Ø) x 1,5 mm, 1 mm e 0,7 mm (espessura) foram confeccionados simulando restaurações simplificadas em cerâmica pura. Discos de substrato (n= 2; Ø: 10 mm; espessura: 2 mm) foram simulados com as cores de resina composta: A2 (controle positivo) e C4; e ligas metálicas: prata (Ni-Cr) e ouro (Cu-Al). As propriedades ópticas dos 9 espécimes de zircônia translúcida posicionados nos 3 substratos diferentes foram analisadas por um espectrofotômetro. A variação de cor (ΔE00) entre cada espécime cerâmico sobre o substrato controle positivo (A2) e sobre os fundos escuros (C4, prateado, dourado) foi calculada quanto à capacidade de mascaramento da cerâmica e submetida ao teste não paramétrico de Kruskal Wallis (5%). O parâmetro de translucidez (TP00) e a razão de contraste (CR) das diferentes espessuras dos discos cerâmicos também foram coletados e analisados por ANOVA de uma via e teste de Tukey (5%). Resultados: A zircônia translúcida apresentou maior opacidade na espessura de 1,5 mm, embora não tenha sido estatisticamente diferente entre 0,7 e 1,0 mm. Todos os fundos escuros afetaram significativamente a cor final da restauração simplificada em todas as espessuras avaliadas. No entanto, o aumento da espessura da cerâmica mostrou uma diminuição nos valores de ΔE00 para todos os substratos. Conclusão: A zircônia translúcida não foi capaz de mascarar os substratos escuros, independente da espessura avaliada. Objetivos Métodos n= n (n Ø (Ø 15 5 1, 07 0 7 0, (espessura pura composta C4 C metálicas NiCr Ni Cr (Ni-Cr CuAl. CuAl Cu Al . (Cu-Al) espectrofotômetro ΔE (ΔE00 (A2 C4, (C4 prateado dourado 5%. 5% (5%) TP00 TP (TP00 CR (CR Resultados avaliadas entanto ΔE0 Conclusão avaliada (Cu-Al (ΔE0 (A (C (5% TP0 (TP0 (ΔE (5 (TP (

ABSTRACT Objectives: To evaluate the translucency, contrast ratio and masking ability of a translucent zirconia with different thicknesses. Methods: Disc shaped specimens (n= 3) with 10 mm (Ø) x 1.5 mm, 1 mm and 0.7 mm (thickness) were manufactured simulating all-ceramic simplified restorations. Substrate discs (n= 2; Ø: 10 mm; thickness: 2 mm) were simulated with composite resin shades: A2 (positive control) and C4; and metal alloys: silver (Ni-Cr) and golden (Cu-Al). Optical properties of the 9 translucent zirconia specimens placed on the 3 different substrates were analyzed by a spectrophotometer. The color variation (ΔE00) between each ceramic structure over the positive control substrate (A2) and over the dark backgrounds (C4, silvery, golden) were obtained as to their ceramic masking ability and subjected to non-parametric Kruskal Wallis test (5%). The translucency parameter (TP00) and contrast ratio (CR) of the different thicknesses of the ceramic discs were also collected and analyzed by one-way ANOVA and the Tukey test (5%). Results: The translucent zirconia showed greater opacity in the thickness of 1.5 mm, although it was not statistically different between 0.7 and 1.0 mm. All dark backgrounds significantly affected the final color of the simplified restoration in all evaluated thicknesses. However, the increase in ceramic thickness showed a decrease in ΔE00 values for all substrates. Conclusion: The translucent zirconia was not able to mask the dark substrates, independent of the evaluated thickness. Objectives Methods n= n (n Ø (Ø 15 5 1. 07 0 7 0. (thickness allceramic restorations shades A C4 C alloys NiCr Ni Cr (Ni-Cr CuAl. CuAl Cu Al . (Cu-Al) spectrophotometer ΔE (ΔE00 (A2 C4, (C4 silvery nonparametric non parametric 5%. 5% (5%) TP00 TP (TP00 CR (CR oneway one way Results However ΔE0 Conclusion (Cu-Al (ΔE0 (A (C (5% TP0 (TP0 (ΔE (5 (TP (

RESUMO JUSTIFICATIVA E OBJETIVOS: A prática clínica no tratamento da dor crônica é frequentemente deficiente ou ineficaz, seja pela subjetividade ou pela presença de fatores potencializadores. As dores crônicas mais comuns são a musculoesquelética, a neuropática e a oncológica. Este estudo teve como objetivo conhecer os aspectos que entremeiam o processo de dor e como tal condição interfere na qualidade de vida. MÉTODOS: Estudo descritivo, transversal e exploratório que incluiu 44 pacientes, sendo 15 com dor musculoesquelética, 15 com dor oncológica e 14 com dor neuropática. Os dados foram coletados por meio de entrevista específica semiestruturada, autoavaliação e aplicação dos instrumentos: Escala Analógica Visual, Health-related Quality of Life Questionnaire, Morisky and Green Drug Treatment Adherence Test, Questionnaire for Diagnosis of Neuropathic Pain, Epworth Sleepiness Scale, Tampa Kinesiophobia Scale, Beck Anxiety Inventory e Beck Depression Inventory. RESULTADOS: A análise dos dados revelou baixa qualidade de vida para 61,36% dos pacientes, sendo mais grave para os portadores de dor neuropática. A associação da qualidade de vida com os fatores analisados foi estatisticamente significante quanto à adesão ao tratamento, nível de dor, sonolência, ansiedade e depressão. Os indivíduos com dor neuropática foram os mais afetados, exceto pela cinesiofobia, que teve maior ocorrência nos indivíduos com dor musculoesquelética. CONCLUSÃO: Os três tipos de dor diminuem consideravelmente a qualidade de vida dos pacientes, sendo a redução mais evidente nos portadores de dor neuropática.

ABSTRACT BACKGROUND AND OBJECTIVES: The clinical practice of analgesia in chronic pain is often deficient or ineffective, either due to the subjectivity or presence of potentiating factors. The most common chronic pains are musculoskeletal, neuropathic, and oncological. This research aimed at understanding the aspects that intersperse the process of pain and how they interfere in quality of life. METHODS: Descriptive, cross-sectional, exploratory study with a sample of 44 patients,15 with musculoskeletal pain, 15 with oncological pain and 14 with neuropathic pain, belonging to the Base Hospital Pain Clinic in São José do Rio Preto/SP. Data were collected through specific semi-structured interviews, self-assessment and application of instruments: Visual Analog Scale, Health-Related Quality of Life Questionnaire, Morisky and Green Drug Treatment Adherence Test, Questionnaire for Diagnosis of Neuropathic Pain, Epworth Sleepiness Scale, Tampa Kinesiophobia Scale, Beck Anxiety Inventory, and Beck Depression Inventory. RESULTS: The data analysis revealed poor quality of life in 61.36% of the patients, and this situation was even more serious for patients with neuropathic pain. The association between quality of life and the analyzed factors was statistically significant in terms of adherence to treatment, pain levels, sleepiness, anxiety and depression. Individuals with neuropathic pain were more affected, except for kinesiophobia, which had more incidence in individuals with musculoskeletal pain. CONCLUSION: Data revealed that all types of pain considerably decrease quality of life, and it’s more evident in individuals with neuropathic pain.

RESUMO Neste artigo, investigam-se as políticas curriculares da rede estadual de ensino de São Paulo entre 2007 e 2018 com o objetivo de compreender seus sentidos e significados. Em 2007 foi implantado um modelo padronizado de currículo, articulado à avaliação de desempenho das escolas e à bonificação docente. Com base em pesquisa documental, buscou-se entender a gênese desse modelo de política curricular originado nos anos 1990 e que culminou, em 2007, com a implantação do Programa São Paulo Faz Escola e, posteriormente, em 2012, com o Programa Escola Integral. Ambos os programas são tentativas de remodelar a escola com um currículo moderno, baseado nas pedagogias das habilidades e competências. Essas políticas curriculares reproduzem o tripé de uma “nova agenda” de políticas públicas, baseada em accountability, controle e padronização, alterando o sentido da qualidade da educação, reduzido ao escopo da “aprendizagem”.

ABSTRACT This paper investigates the curricular policies implemented in the education system of the state of São Paulo between 2007 and 2018, in order to understand their senses and meanings. In 2007, a standardized curricular model for São Paulo was implemented alongside a system including student performance evaluations and bonuses for teachers. Documents consulted in the elaboration of this paper reveal the genesis of this curricular policy model in the 1990s, a process that would culminate with the implementation of the São Paulo Faz Escola Program in 2007 and, later, in 2012, of the Escola Integral Program. Both programs are attempts to reshape schools through a modern curriculum based on a pedagogy of skills and competencies. These curricular policies reproduce a “new agenda” of public policies, which has been supported by the tripod of accountability, control, and standardization, changing the sense of quality of education, reduced to the scope of “learning”.

RESUMEN En este artículo investigamos las políticas curriculares implementadas en la red estatal de enseñanza de São Paulo entre 2007-2018, con el objetivo de comprender sus sentidos y significados. En 2007, se implementó un modelo de estandardización de currículo para São Paulo, articulado a la evaluación del desempeño de las escuelas y a la bonificación del docente. Con base en investigación documental, buscamos entender la génesis de ese modelo de política curricular originado en los años 1990 y que culminó, en 2007, con la implementación del Programa São Paulo Faz Escola y, posteriormente, en 2012, del Programa Escuela Integral. Ambos programas son intentos de remodelar la escuela a través de un currículo moderno, basado en las pedagogías de las habilidades y competencias. Esas políticas curriculares reproducen el tripié de una “nueva agenda” de políticas públicas basadas en el trípode de accountability, control y estandarización, alterando el sentido de la calidad de la educación reducido al ámbito del “aprendizaje”.

The phytochemical investigation of the hexane and methanol extracts from the bark of Duguetia pycnastera Sandwith (Annonaceae) afforded seven known compounds, two asarone-derived phenylpropanoids and five isoquinoline-derived alkaloids. The asarones, γ-asarone (1-allyl-2,4,5-trimethoxybenzene) and 2,4,5-trimethoxy-styrene were isolated of the hexane extract while the aporphine alkaloids, O-methylmoschatoline, lysicamine, nornuciferidine, and guatterine N-oxide, and the benzyltetrahydroisoquinoline alkaloid, (S)-reticuline were isolated of the alkaloid fraction of the methanol extract. This is the first report of these compounds in D. pycnastera. γ-Asarone is being reported for the first time in the Annonaceae. Nornuciferidine is described for the second time in the Annonaceae while guatterine N-oxide is the third register. The structures of the isolated compounds were established by extensive analyses using 1D and 2D NMR spectroscopy in combination with MS. The cytotoxic activity of the isolated compounds (except for nornuciferidine) was evaluated against cancer and non-cancerous cell lines, in which lysicamine was the most active compound, mainly against HL-60, HepG2, and K562 with IC50 values of 24.40, 28.86 and 38.75 µmol L-1, respectively.

Abstract Background: Cosmetics are part of the daily life of the population, and their use can lead to allergic contact dermatitis. Objectives: To assess the profile of patients diagnosed with allergic contact dermatitis to cosmetics treated at a referral center for 13 years, as well as the characteristics of the clinical picture and allergens involved. Methods: This was a retrospective study, with analysis of medical records of patients attended at this service. The individuals included had a diagnostic hypothesis of allergic contact dermatitis to cosmetics and had previously been submitted to epicutaneous tests. Results: A total of 1405 medical records were analyzed, 403 (28.7%) with suspected allergic contact dermatitis to cosmetics and 232 (16.5%) with confirmed diagnosis. Of these, 208 (89.7%) were women, and the age group most affected was 31 − 60 years. The most common locations were face in 195 cases (25.8%), cervical region in 116 (15.3%), and trunk in 96 (12.6%). The main allergens in the contact tests were toluene-sulfonamide-formaldehyde resin in 69 cases (29.7%), paraphenylenediamine in 54 (26.3%), Kathon CG® in 41 (20.7%), and fragrance-mix 1 in 29 (16.4%). In 154 (66.4%) of the 232 patients with a confirmed diagnosis of allergic contact dermatitis to cosmetics it was possible to specify the cosmetic product responsible for the lesions. Study limitations: The absence of some allergens considered important in the world as causes of allergic contact dermatitis, which are not readily accessible among us. Conclusions: The data of the analyzed population (predominance of young women), as well as the location of the lesions (face and cervical area) and the main allergens involved were consistent with those from the world literature.

Resumo Na pesquisa sobre comprometimento organizacional predomina o modelo tridimensional de Meyer e Allen que tem sido foco de discussões acerca de possíveis inconsistências, especialmente relacionadas à sua base de continuação. Assim, o presente estudo coloca em pauta o conceito de entrincheiramento organizacional como a tendência do trabalhador a permanecer devido à avaliação acerca de sua empregabilidade, de suas alternativas fora da organização e dos custos associados à sua saída. No campo das carreiras foram reunidas evidências de sobreposição entre o entrincheiramento e comprometimento de continuação. Testou-se a hipótese de sobreposição dos construtos com foco organizacional a partir da avaliação de modelos estruturais de covariância. A amostra do estudo contemplou 721 trabalhadores de diferentes organizações e estados do Brasil. Foram utilizados os softwares SPSS 13.0 e AMOS 16.0 e empregada a modelagem de equações estruturais. Os testes de covariância entre os construtos, ambos com bons índices de ajuste, resultaram nas primeiras evidências de sobreposição. Apesar da confirmação do teste da hipótese, recomenda-se outras investigações que permitam reunir uma base empírica que suporte a defesa de que a dimensão de continuação representa o mesmo fenômeno constituído pelo entrincheiramento organizacional, justificando sua desintegração do conceito de comprometimento.

Abstract In the research agenda on organizational commitment, the three-dimensional model of Meyer and Allen is still extensively used, despite the fact that it has been the focus of discussions about conceptual and empirical problems, especially those related to one of its dimensions (continuance commitment). This study introduces to the existing debate the concept of organizational entrenchment, as the worker's tendency to remain due to his evaluation of his employability, his employment alternatives outside the organization, and the costs associated with leaving the company. In the career field, researchers found evidence of overlap between entrenchment and continuance commitment. In this study, we aimed to test the hypothesis of overlap between these constructs within the organizational target, using structural equation modeling. The sample consisted of 721 workers from different organizations and states in Brazil. We used SPSS 13.0 and AMOS 16.0 software. The two covariance models, both with good fit indices, provided evidence of overlap. In spite of the fact that the hypothesis was confirmed, we recommend further studies aimed at gathering additional empirical indicators showing that the continuance component represents the same phenomenon as organizational entrenchment, justifying its detachment from the concept of commitment.

RESUMO. Ferramentas clínicas adicionais devem ser investigadas para facilitar e auxiliar o diagnóstico prévio do declínio cognitivo. O controle postural piora com o envelhecimento e este fato pode estar relacionado com o comprometimento cognitivo patológico. Objetivo: comparar o equilíbrio de adultos idosos sem demência no grupo controle (GC) e com doença de Alzheimer (DA), observar as possíveis associações com as variáveis independentes (diagnóstico, idade, sexo e estado cognitivo global) e verificar as melhores análises posturográficas para determinar a diferença entre os grupos. Métodos: 86 idosos (DA = 48; GC=38) foram avaliados utilizando a escala de equilíbrio Berg (EEB) e o controle postural pela estabilometria no Wii Balance Board ® (WBB). Testes T independente, Mann Whitney U, o tamanho de efeito (TE) e uma regressão linear foram realizados. Resultados: houve diferença significativa para AE, VT, ML com OA e OF, AP com OF e EEB entre os grupos. Estas variáveis mostraram um TE grande para EEB (-1.02), AE (0,83) com OF, ML (0,80; 0,96) e VT (0,92; 1,10) com OA e OF, respectivamente. A regressão indicou que a cognição global acompanhada da idade, gênero e diagnóstico contribuem para as alterações do controle postural. Conclusão: pacientes com DA apresentam comprometimento do controle postural quando comparados a idosos saudáveis. A VT com OF foi o parâmetro mais sensível para diferenciar os grupos e deve ser melhor investigada como possível biomarcador motor de demência na análise posturográfica com o WBB.

ABSTRACT. Additional clinical tools should be investigated to facilitate and aid the early diagnosis of cognitive decline. Postural control worsens with aging and this may be related to pathological cognitive impairment. Objective: to compare the balance of older adults without dementia in a control group (CG) and with Alzheimer’s disease (AD), to observe the possible association with the independent variables (diagnosis, age, gender, and global cognition) and to verify the best posturographic analyses to determine the difference between the groups. Methods: 86 older adults (AD = 48; CG = 38) were evaluated using the Berg Balance Scale (BBS) and postural control was assessed by stabilometry on the Wii Balance Board ® (WBB). Independent T, Mann-Whitney U-tests, Effect Size (ES) and a linear regression were performed. Results: there was a significant difference for Elliptical Area, Total Velocity, Medio-Lateral displacements with closed eyes and open eyes, antero-posterior, with closed eyes and BBS between groups. These variables showed a large effect size for BBS (-1.02), Elliptical Area (0.83) with closed eyes, Medio-Lateral (0.80, 0.96) and Total Velocity (0.92; 1.10) with eyes open and eyes closed, respectively. Regression indicated global cognition accompanied by age, gender, and diagnosis influenced postural control. Conclusion: patients with AD showed impaired postural control compared to Control Group subjects. Total Velocity with closed eyes was the most sensitive parameter for differentiating groups and should be better investigated as a possible motor biomarker of dementia in posturographic analysis with WBB.

RESUMO Introdução: A especificidade do treinamento esportivo pode levar à especialização muscular, com possível alteração da razão do torque isquiotibiais/quadríceps (razão IQ) natural, constituindo um fator de risco de lesão muscular nos ângulos articulares em que o desequilíbrio muscular pode prejudicar a estabilidade dinâmica. Objetivo: O objetivo foi avaliar a distribuição do torque dos músculos isquiotibiais e quadríceps e da razão IQ ao longo de toda a amplitude de movimento, de modo a identificar possíveis desequilíbrios musculares no joelho de atletas de futsal feminino. Métodos: Dezenove atletas amadoras de futsal feminino tiveram a razão IQ do membro dominante avaliada em uma série de cinco repetições máximas de flexão/extensão do joelho a 180°/segundo na amplitude de movimento total (30° a 80°). O pico de torque flexor e extensor e a razão IQ (%) foram comparados a cada 5° de movimento do joelho pela one-way ANOVA de medidas repetidas e do teste post hoc de Tukey (p < 0,05) para determinar os ângulos articulares que apresentam desequilíbrio muscular. Resultados: O torque do quadríceps foi maior que 50° a 60° de flexão do joelho, enquanto o torque dos isquiotibiais foi maior que 55° a 65°. A razão IQ apresentou menores valores que 30° a 45° de flexão do joelho e quatro atletas apresentaram valores abaixo de 60%, o que pode representar risco de lesão. No entanto, a razão IQ calculada pelo pico de torque mostrou apenas uma atleta com menos de 60%. Conclusão: A razão IQ analisada ao longo de toda a amplitude de movimento permitiu identificar desequilíbrio muscular em ângulos articulares específicos em atletas de futsal feminino.

ABSTRACT Introduction: The specificity of sports training can lead to muscle specialization with a possible change in the natural hamstring/quadriceps torque ratio (HQ ratio), constituting a risk factor for muscle injury at the joint angles in which muscle imbalance may impair dynamic stability. Objective: The aim was to evaluate the torque distribution of the hamstrings and quadriceps and the HQ ratio throughout the range of motion in order to identify possible muscle imbalances at the knee of female futsal athletes. Methods: Nineteen amateur female futsal athletes had their dominant limb HQ ratio evaluated in a series of five maximum repetitions of flexion/extension of the knee at 180°/second in the total joint range of motion (30° to 80°). The peak flexor and extensor torque and the HQ ratio (%) were compared each 5° of knee motion using one-way repeated measures ANOVA and Tukey’s post hoc test (p<0.05) to determine the joint angles that present muscular imbalance. Results: Quadriceps torque was higher than 50° to 60° of knee flexion, while hamstrings torque was higher than 55° to 65°. The HQ ratio presented lower values than 30° to 45° of knee flexion and four athletes presented values lower than 60%, which may represent a risk of injury. However, the HQ ratio calculated by the peak torque showed only one athlete with less than 60%. Conclusion: The HQ ratio analyzed throughout the knee range of motion allowed identifying muscle imbalance at specific joint angles in female futsal players.

RESUMEN Introducción: La especificidad del entrenamiento deportivo puede llevar a la especialización muscular, con posible cambio de la razón de torque entre isquiotibiales/cuádriceps (razón IC) natural, constituyendo un factor de riesgo de lesión muscular en los ángulos de las articulaciones, en el que el desequilibrio muscular puede perjudicar la estabilidad dinámica. Objetivo ; El objetivo fue evaluar la distribución del torque de los músculos isquiotibiales y cuádriceps y la razón IC a lo largo de todo el rango de movimiento para identificar posibles desequilibrios musculares en la rodilla en atletas de futsal femenino. Métodos: Diecinueve atletas amateurs de futsal femenino tuvieron la razón IC de la extremidad dominante evaluada en una serie de cinco repeticiones máximas de flexión/extensión de la rodilla a 180°/segundo en el rango de movimiento total (30° a 80°). El pico de torque flexor y extensor y la razón IC (%) fueron comparados a cada 5° de movimiento de la rodilla por el ANOVA one-way de medidas repetidas y de la prueba post hoc de Tukey (p < 0,05) para determinar los ángulos articulares que presentan desequilibrio muscular. Resultados: El torque del cuádriceps fue mayor que 50° a 60° de flexión de la rodilla, mientras que el torque de los isquiotibiales fue mayor que 55° a 65°. La razón IC presentó los valores más bajos que 30° a 45° de flexión de la rodilla y cuatro atletas presentaron valores inferiores al 60%, lo que puede representar riesgo de lesión. Sin embargo, la razón IC calculada por el pico de torque máximo, mostró sólo una atleta con menos del 60%. Conclusión . La razón IC analizada a lo largo de todo el rango de movimiento permitió identificar desequilibrio muscular en ángulos articulares específicos en atletas de futsal femenino.

ABSTRACT Geopropolis is a special type of propolis produced by stingless bees. Several pharmacological properties have been described for different types of geopropolis, but there have been no previous studies of the geopropolis from Melipona mondury. In this study, we investigated the antioxidant, antibacterial, and antiproliferative activities of M. mondury geopropolis, and determined its chemical profile. The antioxidant activity was determined using in vitro ABTS·+, ·DPPH, and β-carotene/linoleic acid co-oxidation methods. The antibacterial activity was determined using a microdilution method with Pseudomonas aeruginosa, Staphylococcus aureus, and methicillin-resistant S. aureus. The antiproliferative effect was determined in tumor cell lines using the Alamar Blue assay. The chemical profile was obtained using UHPLC-MS and UHPLC-MS/MS. The butanolic fraction had the highest concentration of phenolic compounds and more potent antioxidant properties in all assays. This fraction also had bacteriostatic and bactericidal effects against all bacterial strains at low concentrations, especially S. aureus. The hexane fraction had the highest antiproliferative potential, with IC50 values ranging from 24.2 to 46.6 µg/mL in HL-60 (human promyelocytic leukemia cell) and K562 (human chronic myelocytic leukemia cell), respectively. Preliminary chemical analysis indicates the presence of terpenes and gallic acid in the geopropolis. Our results indicate the therapeutic potential of geopropolis from M. mondury against inflammatory, oxidative, infectious, and neoplastic diseases.

This study compared two different structural models regarding the direct or mediation role satisfaction has in the prediction of commitment bond, in the context of a public and traditional Brazilian organization, the Military Police. A quantitative and qualitative combination of methods was used to measure relationships between variables and to contextualize the results found from 10,052 surveyed workers. We conducted interviews with six high command officers and a focus group comprised of seven members from the three highest organizational levels. Content analysis and structural equation modeling (SEM) were used in the analysis process. Evidence was found that satisfaction with relationships is an antecedent of commitment, which mediates its relationships with other variables, such as work and personal characteristics. Understanding the organization's characteristics and the use of a substantial sample of its employees simultaneously allowed for testing complex structural models and investigating a labor segment that has been neglected by commitment research.

Este estudo procurou analisar a produção científica brasileira 2000-2010 sobre vínculos do empregado com a organização, abrangendo quatro temas principais: comprometimento organizacional, contratos psicológicos, cidadania organizacional e percepções de apoio e de justiça e equidade. Justifica essa escolha a importância dessas questões para o campo de pesquisa micro-organizacional e a intensa concentração de pesquisa sobre o tema. Sessenta e três artigos foram identificados. As análises seguiram três ênfases: aspectos metodológicos; conteúdos dos artigos, suas contribuições e limitações; e as redes de parcerias entre autores e instituições. Os resultados indicam altos níveis de nebulosidade conceitual e de sobreposição de instrumentos, e pouca interação entre grupos de pesquisa. Com base nos resultados, foi proposta uma agenda de pesquisa.

This study sought to analyze the Brazilian scientific production in 2000-2010 on employee's linkages with the organization, covering four main topics: organizational commitment, psychological contracts, organizational citizenship and perceptions of support, justice and equity. The importance of these issues to micro-organizational research and the intense research on the topic are the reasons for making this choice. Sixty-three articles were identified. The analyses followed three emphases: methodological features; content of articles, their contributions and limitations; and partnership networks between authors and institutions. The results show high levels of conceptual haziness and overlapping of instruments, and little interaction between research groups. Based on the findings, a research agenda is proposed.