Abstract (Introduction): Bycatch and discards are a socio-environmental concern that threatens the sustainability of marine life and fishing grounds. Approaches to this problem have focused on biological and/or ecological aspects. We considered it necessary to explore the problem from the social dimension and for this purpose we explored social representations. (Objective): The aim of this study is to explore the social representations of bycatch and discards in a group of businessmen and workers in the capture stage of the Argentine industrial fishing activity. We ask how they evaluate bycatch and fishing discards, what are their causes and if they observe possible solutions. (Methodology): Within the framework of a project of the Federal Fishing Council, we conducted focus groups with businessmen, business chambers, SOMU workers and captains of the industrial fishing activity. (Results): The results of the focus groups conducted in 2021 reveal three main causes of this problem. First, the lack of reliable data on actual discard levels raises concerns about sustainability and overfishing. Second, the low utilization of selectivity devices is attributed to their operational inefficiency and possible labour barriers. Finally, economic and organizational pressures, such as company profitability and workers’ salaries, justify the discard of non-target species, exacerbating the problem. (Conclusions): The work contributes to an understanding of the main reasons for bycatch and discards, which is essential to advance solutions. We understand that solutions are not simple and involve a sincere debate among stakeholders.

Resumen (Introducción): Las capturas incidentales y los descartes pesqueros son una preocupación socioambiental que amenaza la sostenibilidad de la vida marina y de los caladeros. Los abordajes a esta problemática estuvieron centrados en aspectos biológicos y ecológicos. Consideramos necesario explorar la problemática desde la dimensión social y para ello, exploramos las representaciones sociales. (Objetivo): El objetivo de este estudio fue explorar las representaciones sobre capturas incidentales y descartes pesqueros en un grupo de empresarios y trabajadores de la etapa de captura de la actividad pesquera industrial argentina, específicamente, cómo evalúan este problema, sus causas y posibles soluciones. (Metodología): En el marco de un proyecto del Consejo Federal Pesquero, se realizaron grupos focales con seis cámaras empresariales y personal jerárquico de empresas asociadas, así como trabajadores del SOMU y capitanes que operan en alta mar. (Resultados): Los resultados de los grupos focales realizados en 2021 revelaron tres principales causas de dicha problemática. Primero, la falta de datos confiables sobre los niveles reales de descarte genera preocupaciones sobre la sostenibilidad y la sobreexplotación. Segundo, la escasa utilización de dispositivos de selectividad se atribuye a su ineficacia operativa y a posibles barreras laborales. Finalmente, las presiones económicas y organizacionales, como la rentabilidad de las empresas y los salarios de los trabajadores, justifican el descarte, exacerbando el problema. (Conclusiones): El trabajo aporta a un entendimiento sobre las razones de la captura incidental y los descarte, esencial para avanzar en soluciones. Entendemos que las soluciones no son simples e implican un sincero debate entre actores.

Résumé Le présent travail analyse le discours produit par les généraux des Forces Militaires et les voix des plus hautes autorités politiques de l’ancienne guérilla des FARC-EP, aujourd’hui transformée en le parti politique Comunes. À travers 21 entretiens approfondis avec des acteurs clés, les formes opposées de légitimation, de problématisation et de compréhension de la portée et de la signification de l’Accord de Paix signé en novembre 2016, ainsi que de sa mise en œuvre ultérieure, sont mises en contraste. De cette façon, tant l’institution militaire que la guérilla démobilisée projettent un discours irréconciliable. Bien qu’ils partagent un diagnostic de non-respect de cet Accord, les responsabilités et les accusations suivent des trajectoires très différentes, reflétant la situation de grande polarisation et l’affaiblissement du processus de paix observé ces dernières années. lancienne l ancienne FARCEP, FARCEP FARC EP, EP FARC-EP aujourdhui aujourd hui Comunes 2 clés légitimation lAccord Accord 2016 ultérieure contraste façon linstitution institution irréconciliable quils qu ils nonrespect non respect différentes laffaiblissement affaiblissement années 201 20

Resumo Neste artigo é analisado o discurso produzido pelos generais das Forças Militares e pelas vozes de máxima autoridade política na extinta guerrilha das FARC-EP, que hoje se transformou no partido político Comunes. Por meio de 21 entrevistas em profundidade com atores principais são comparadas as formas opostas de legitimar, problematizar e entender o alcance e significado, tanto do Acordo de Paz assinado em novembro de 2016, quanto de sua subsequente implementação. Assim, tanto o estamento militar quanto a guerrilha desmobilizada projetam um discurso irreconciliável. Embora compartilhem um diagnóstico de descumprimento desse Acordo, as responsabilidades e acusações seguem trajetórias muito diferentes, o que reflete a situação de grande polarização e enfraquecimento do processo de paz experimentado nos últimos anos. FARCEP, FARCEP FARC EP, EP FARC-EP Comunes 2 legitimar significado 2016 implementação Assim irreconciliável diferentes anos 201 20

Abstract The following work analyzes the discourse produced by generals of the Colombian Armed Forces and voices of the highest political authority in the now-defunct Revolutionary Armed Forces of Colombia (FARC-EP) guerrilla, which has transformed into the political party Comunes. To this end, this article analyzes the contrasting ways of legitimizing, problematizing, and understanding the scope and significance of the Peace Agreement signed in November 2016 and its subsequent implementation are examined through 21 in-depth interviews with key actors. Thus, the military establishment and the demobilized guerrilla project an irreconcilable discourse. While they share a diagnosis of non-compliance with the Agreement, the responsibilities and accusations follow very different trajectories, reflecting the great polarity and the weakening of the peace process experienced in recent years. nowdefunct now defunct FARCEP FARC EP (FARC-EP Comunes end legitimizing problematizing 201 2 indepth depth actors Thus noncompliance non compliance trajectories years 20

Resumen El siguiente trabajo analiza el discurso producido por generales de las Fuerzas Militares y voces de máxima autoridad política en la extinta guerrilla de las FARC-EP, transformada hoy en el partido político Comunes. A través de 21 entrevistas en profundidad con actores protagonistas se contrastan las formas opuestas de legitimar, problematizar y entender el alcance y significado, tanto del Acuerdo de Paz suscrito en noviembre de 2016, como de su posterior implementación. Así, tanto el estamento militar como la desmovilizada guerrilla proyectan un discurso irreconciliable. Si bien comparten un diagnóstico de incumplimiento a dicho Acuerdo, las responsabilidades y acusaciones discurren por trayectorias muy diferentes, lo cual refleja la situación de gran polaridad y el debilitamiento del proceso de paz experimentado en los últimos años. FARCEP, FARCEP FARC EP, EP FARC-EP Comunes 2 legitimar significado 2016 implementación Así irreconciliable diferentes años 201 20

Résumé L’article vise à étudier un parcours unique de réception et de traduction des idées d’Antonio Gramsci au Brésil. Ce travail vise à reconstruire la pensée politique de Fernando Henrique Cardoso pendant la dictature militaire et la transition démocratique brésilienne (1964-1988), en prenant comme fil conducteur l’interprétation et l’utilisation par l’auteur des idées d’Antonio Gramsci au fil du temps pour analyser la formation de l’État, des classes sociales et de la politique au Brésil. Le texte développe l’hypothèse de la centralité des concepts gramsciens dans la pensée de Cardoso en trois phases de réfraction gramscienne : (i) entre 1964 et 1974, dans la thèse de l’hégémonie dépendante de la bourgeoisie au Brésil, (ii) entre 1974 et 1983, dans la défense de l’État brésilien en tant que « Prince modern » comme catégorie d’analyse de la coalition agraire-industrielle-militaire dans la période post-1964, et (iii) de 1983 à 1988, dans la formulation du transformisme autoritaire-éclairées comme comportement des élites économiques et militaires brésiliennes face à la pression pour la démocratisation du régime. L’utilisation par Cardoso des concepts gramsciens est créative à tous ces moments. En d’autres termes, le penseur brésilien s’inspire des concepts gramsciens pour créer son propre lexique d’analyse de la politique brésilienne. L’article explore donc non seulement la réception, mais aussi la traduction des idées de Gramsci chez Fernando Henrique Cardoso. Larticle L article dAntonio d Antonio Brésil 19641988, 19641988 1988 , (1964-1988) linterprétation l interprétation lutilisation utilisation lauteur auteur lÉtat, lÉtat État, État lhypothèse hypothèse i (i 196 lhégémonie hégémonie ii (ii 197 danalyse analyse agraireindustriellemilitaire agraire industrielle post1964, post1964 post 1964, post-1964 iii (iii 198 autoritaireéclairées autoritaire éclairées régime Lutilisation moments dautres autres termes sinspire s inspire 1964198 (1964-1988 19 post196 post-196 196419 (1964-198 1 post19 post-19 19641 (1964-19 post1 post-1 (1964-1 post- (1964- (1964 (196 (19 (1 (

Resumen El artículo pretende investigar una trayectoria singular de recepción y traducción de las ideas de Antonio Gramsci en Brasil. Este artículo pretende reconstruir el pensamiento político de Fernando Henrique Cardoso durante la dictadura militar y la transición democrática brasileña (1964-1988), tomando como hilo conductor la interpretación y el uso que el autor hizo de las ideas de Antonio Gramsci a lo largo del tiempo para analizar la formación del Estado, las clases sociales y la política en Brasil. El texto desarrolla la hipótesis de la centralidad de los conceptos gramscianos en el pensamiento de Cardoso en tres fases de refracción gramsciana: (i) entre 1964 y 1974, en la tesis de la hegemonía dependiente de la burguesía en Brasil, (ii) entre 1974 y 1983, en la defensa del Estado brasileño como “Príncipe Moderno” como categoría de análisis de la coalición agrario-industrial-militar en el período posterior a 1964, y (iii) entre 1983 y 1988, en la formulación del transformismo autoritario-esclarecido como comportamiento de las élites económicas y militares brasileñas frente a la presión por la democratización del régimen. El uso que Cardoso hace de los conceptos gramscianos es creativo en todos estos momentos. En otras palabras, el pensador brasileño se inspira en los conceptos gramscianos para crear su propio léxico de análisis de la política brasileña. El artículo explora, por tanto, no sólo la recepción, sino también la traducción de las ideas de Gramsci en Fernando Henrique Cardoso. Brasil 19641988, 19641988 1988 , (1964-1988) gramsciana i (i 196 ii (ii 197 Príncipe Moderno agrarioindustrialmilitar agrario industrial iii (iii 198 autoritarioesclarecido autoritario esclarecido régimen momentos palabras explora tanto 1964198 (1964-1988 19 196419 (1964-198 1 19641 (1964-19 (1964-1 (1964- (1964 (196 (19 (1 (

Abstract This article aims to investigate a unique path in the reception and translation of Antonio Gramsci’s ideas in Brazil. This work attempts to reconstruct Fernando Henrique Cardoso’s political thought during the Brazilian military dictatorship and democratic transition (1964-1988), focusing on his interpretation and use of Antonio Gramsci’s ideas to analyze state formation, social classes and politics in Brazil. The paper argues that the Gramscian concepts are central to Cardoso’s political thought in three phases of Gramscian refraction: (i) between 1964 and 1974, in the thesis of the Brazilian bourgeoisie’s dependent hegemony; (ii) between 1974 and 1983, in the argument of the Brazilian state as the “Modern Prince” as a concept for the analysis of the agrarian-industrial-military coalition in the post-1964 period; and (iii) from 1983 to 1988, in the definition of the Brazilian economic and military elites’ behavior as a authoritarian-scletortic transformism in the face of the pressures for the democratization of the political regime. Cardoso’s uses of Gramscian concepts are creative at all these moments. That is, the Brazilian thinker draws on Gramscian concepts to create his own lexicon to employ in the analysis of Brazilian politics. The article therefore explores not only the reception, but also the translation of Gramsci’s ideas in Fernando Henrique Cardoso. Gramscis Gramsci s Brazil Cardosos Cardoso 19641988, 19641988 1988 , (1964-1988) formation refraction i (i 196 bourgeoisies bourgeoisie hegemony ii (ii 197 Modern Prince agrarianindustrialmilitary agrarian industrial post1964 post post-196 period iii (iii 198 elites authoritarianscletortic authoritarian scletortic regime moments is 1964198 (1964-1988 19 post196 post-19 196419 (1964-198 1 post19 post-1 19641 (1964-19 post1 post- (1964-1 (1964- (1964 (196 (19 (1 (

Resumo O artigo tem como objetivo investigar um percurso singular de recepção e tradução das ideias de Antonio Gramsci no Brasil. Este trabalho visa reconstruir o pensamento político de Fernando Henrique Cardoso durante a ditadura militar e a transição democrática brasileira (1964-1988) tomando como fio condutor a interpretação e uso que esse autor faz das ideias de Antonio Gramsci ao longo do tempo para a análise da formação do Estado, das classes sociais e da política no Brasil. O texto desenvolve a hipótese da centralidade dos conceitos gramscianos no pensamento de Cardoso em três fases de refração gramsciana: i) entre 1964 e 1974, na tese da hegemonia dependente da burguesia no Brasil, ii) entre 1974 e 1983, na defesa do Estado brasileiro como “Príncipe Moderno” enquanto categoria para análise da coalizão agrário-industrial-militar no pós-1964, e iii) de 1983 a 1988, na formulação do transformismo autoritário-esclarecido como comportamento das elites econômicas e militares brasileiras diante da pressão pela democratização do regime. Os usos dos conceitos gramscianos em Cardoso são criativos em todos esses momentos. Isto é, o pensador brasileiro se inspira nos conceitos gramscianos para criar seu próprio léxico a ser utilizado na análise da política brasileira. O artigo explora, portanto, não apenas a recepção, mas também a tradução das ideias de Gramsci em Fernando Henrique Cardoso. Brasil 19641988 1988 (1964-1988 gramsciana i 196 ii 197 Príncipe Moderno agrárioindustrialmilitar agrário industrial pós1964, pós1964 pós 1964, pós-1964 iii 198 autoritárioesclarecido autoritário esclarecido regime momentos é explora portanto 1964198 (1964-198 19 pós196 pós-196 196419 (1964-19 1 pós19 pós-19 19641 (1964-1 pós1 pós-1 (1964- pós- (1964 (196 (19 (1 (

Abstract This article intends to propose a methodology to characterize the Financial (In)Sustainability of Brazilian municipalities − materialized through the Municipal Financial Sustainability Index (ISFM) − as opposed to the methodology suggested by the Proposed Amendment to the Constitution (PEC) No. 188, whose agenda is to incorporate small municipalities considered unsustainable. Regarding the methods, we used quantitative, applied, descriptive and explanatory research, of the bibliographical and documentary type, in addition to descriptive statistics and correlation/linear regression. The results demonstrate that the ISFM is more robust compared to the methodology proposed by the PEC. The Index was applied to 5,570 Brazilian municipalities and the national average resulted in 56%. Most Brazilian municipalities classified themselves as “Sustainable” and the statistical analysis significantly demonstrated the existence of a positive correlation between the variables ISFM and Local Development. The contributions of the work turn to the production of research on the subject, still incipient nationally. InSustainability In (ISFM PEC (PEC No 188 unsustainable methods quantitative type correlationlinear linear regression 5570 5 570 5,57 56 56% Sustainable “Sustainable Development subject nationally 18 557 57 5,5 1 55 5,

Resumen El objetivo de este artículo es proponer una metodología para caracterizar la (In)Sostenibilidad Financiera de los municipios brasileños - materializada a través del Índice de Sostenibilidad Financiera Municipal (ISFM) - en contraposición a la metodología sugerida por la Propuesta de Enmienda a la Constitución (PEC) no 188, que tiene como agenda la incorporación de pequeños municipios considerados insostenibles. Los métodos utilizados fueron cuantitativos, aplicados, descriptivos y explicativos, bibliográficos y documentales, así como la estadística descriptiva y la correlación/regresión lineal. Los resultados muestran que el ISFM es más robusto que la metodología propuesta por el PEC. El Índice se aplicó a 5.570 municipios brasileños y la media nacional fue del 56%. La mayoría de los municipios brasileños fueron clasificados como “Sostenibles” y los análisis estadísticos mostraron una correlación positiva significativa entre las variables ISFM y Desarrollo Local. Las aportaciones de este trabajo se dirigen a la producción de investigaciones sobre el tema, aún incipiente a nivel nacional. InSostenibilidad In (ISFM PEC (PEC 188 insostenibles cuantitativos aplicados explicativos documentales correlaciónregresión regresión lineal 5570 5 570 5.57 56 56% Sostenibles “Sostenibles Local tema 18 557 57 5.5 1 55 5.

Résumé Le but de cet article est de proposer une méthodologie pour caractériser la (In)Durabilité Financière des municipalités brésiliennes - concrétisée par le biais de l’Indice de Durabilité Financière Municipale (ISFM) - en opposition à la méthodologie suggérée par la Proposition d’Amendement Constitutionnel (PEC) n° 188, qui vise à incorporer les petites municipalités considérées comme insoutenables. Les méthodes utilisées comprennent la recherche quantitative, appliquée, descriptive et explicative, de type bibliographique et documentaire, ainsi que la statistique descriptive et la corrélation/régression linéaire. Les résultats montrent que l’ISFM est plus robuste que la méthodologie proposée par la PEC. L’indice a été appliqué aux 5 570 municipalités brésiliennes et la moyenne nationale s’est élevée à 56%. La plupart des municipalités brésiliennes ont été classées comme “Durables” et les analyses statistiques ont démontré de manière significative l’existence d’une corrélation positive entre les variables ISFM et Développement Local. Les contributions de ce travail se concentrent sur la production de recherches sur le sujet, encore peu développé au niveau national. InDurabilité In lIndice l Indice (ISFM dAmendement d Amendement PEC (PEC n 188 insoutenables quantitative appliquée explicative documentaire corrélationrégression régression linéaire lISFM Lindice L indice 57 sest s 56 56% Durables “Durables lexistence existence dune Local sujet national 18 1

Resumo O propósito do presente artigo é propor uma metodologia para caracterização da (In)Sustentabilidade Financeira de municípios brasileiros − materializada por meio do Índice de Sustentabilidade Financeira Municipal (ISFM) − em contraponto à metodologia sugerida pela Proposta de Emenda à Constituição (PEC) no 188, que traz como pauta a incorporação de pequenos municípios considerados insustentáveis. Como métodos utilizou-se pesquisa quantitativa, aplicada, descritiva e explicativa, do tipo bibliográfica e documental, além de estatística descritiva e correlação/regressão linear. Os resultados demonstram que o ISFM possui maior robustez comparado à metodologia proposta pela PEC. O Índice foi aplicado aos 5.570 municípios brasileiros e a média nacional resultou em 56%. A maior parcela dos municípios brasileiros se classificou como “Sustentável” e as análises estatísticas demonstraram, significativamente, a existência de correlação positiva entre as variáveis ISFM e Desenvolvimento Local. As contribuições do trabalho se voltam para a produção de pesquisa sobre a temática, ainda incipiente nacionalmente. InSustentabilidade In (ISFM PEC (PEC 188 insustentáveis utilizouse utilizou quantitativa aplicada explicativa documental correlaçãoregressão regressão linear 5570 5 570 5.57 56 56% Sustentável “Sustentável demonstraram significativamente Local temática nacionalmente 18 557 57 5.5 1 55 5.

The present work focused on the screening process of different inorganic oxides and different temperatures for the epoxidation reaction of macaw palm vegetable oil without using solvent, a promising Brazilian biomass that can substitute other vegetable oils (e.g., soybean oil) in technological applications. This oil has an iodine value of 108.48 g of I2 per 100 g being categorized as a semi-dry oil. The epoxidized vegetable oil can be applied in manifold areas in polymer science. The epoxidation reaction here presented avoided organic solvents and organic acids and aimed to produce a greener route using metal oxides or niobium phosphate as a peroxide-activating catalyst. The experimental parameters were maintained as 10 mol% of catalyst loading and a time of 24 h; however, the temperature for some catalysts was changed to improve the epoxide conversion. Experiments were measured by proton nuclear magnetic resonance (1H NMR). Experiments using titanium oxide (TiO2) as a catalyst reached a conversion greater than 84.7%, while experiments using aluminium oxide (Al2O3) or lanthanum oxide (La2O3) achieved conversions of 22.6 and 30.1%, respectively. Furthermore, it was observed that both niobium compounds instantly react with hydrogen peroxide to form peroxy derivatives. solvent e.g., eg e (e.g. applications 10848 108 48 108.4 I semidry semi dry science peroxideactivating activating 1 mol 2 h however 1H H NMR. NMR . NMR) TiO2 TiO (TiO2 847 84 7 84.7% Al2O3 AlO Al O (Al2O3 La2O3 LaO La (La2O3 226 22 6 22. 301 30 30.1% respectively Furthermore derivatives e.g. (e.g 1084 4 108. (TiO 8 84.7 Al2O (Al2O La2O (La2O 3 30.1 e.g 84. 30.

The objective of this work was to evaluate the total concentration and bioaccessible fractions of Ba, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Pb, V and Zn in berry fruits and analyze the influence of different cultivars and growing conditions on the obtained results. The variations in bioaccessible concentrations were from 7.7-30, 17-29, 22-50, 1.8-96, 22-33 and 20-51% of the total concentration, for Ba, Cu, Fe, Mn, Pb and Zn, respectively. Copper showed greater bioaccessibility in blackberry and blueberry. For Fe, bioaccessibility was observed in all strawberries and blueberries and in some blackberries. Zinc presented higher bioaccessible fractions in strawberries. For V, only the sample Blackberry 124 showed bioaccessible concentration, (11% of the total concentration). Regarding the different forms of cultivation, the strawberries that received radiation from the red and white lamps presented a higher production of fruit compared to the other systems, however, in relation to the absorption of nutrients, a small variation was observed between the fruits. Ba Ca Cd Cr Cu Fe K Mg Mn results 7.730, 7730 7.7 30, 7 30 7.7-30 1729, 1729 17 29, 29 17-29 2250, 2250 22 50, 50 22-50 1.896, 1896 1.8 96, 1 8 96 1.8-96 2233 33 22-3 2051% 2051 20 51% 51 20-51 respectively blueberry blackberries 12 11% 11 (11 concentration. . concentration) cultivation systems however nutrients 730 7.730 773 77 7. 3 7.7-3 172 2 17-2 225 5 22-5 896 1.896 189 18 1. 9 1.8-9 223 22- 205 20-5 (1 73 7.73 7.7- 17- 89 1.89 1.8- 20- (

Assessing the dynamics of pollutants in the environment is a very complex challenge, primarily because of the large number of variables involved. Thus, in addition to processes that depend on the physicochemical properties of the pollutant and the main characteristics of the contaminated environment, there are less obvious phenomena that also influence the dynamics of pollutants, such as colloid-mediated transport. The objective of this work is to elucidate the main characteristics of this process and its influence on the transport of pollutants through the soil, taking glyphosate as an example. Although this pollutant is strongly retained by soil components, its presence in groundwater is quite frequent, often due to this facilitated transport by colloids. challenge involved Thus colloidmediated colloid mediated example components frequent colloids

This work developed an effective and eco-friendly analytical method to support quality control for Brazilian Bill proposal No. 5332/2009. The bill advocates the creation of the “Brazilian bread” by mandating the incorporation of cassava byproducts into wheat flour, with the aim of reducing Brazil’s external dependency on wheat imports and promoting domestic cassava family farming. For this, a handheld near-infrared (NIR) spectrophotometer was utilized for on-site determination of cassava starch in commercial wheat flour. The quantitative analysis, which utilized NIR spectra pre-processed with offset correction (OFF) combined with linear baseline correction (LBC), alongside the successive projections algorithm for interval selection in partial least squares (iSPA-PLS), exhibited superior predictive capability, achieving a relative error of prediction below 8%. Furthermore, the classification process, which involved NIR spectra pre-processed with LBC and iSPA-PLS for discriminant analysis (iSPA-PLS-DA), yielded an impressive 94% overall accuracy, with only 3 misclassifications in the test set. ecofriendly eco friendly No 53322009 5332 2009 5332/2009 bread flour Brazils Brazil s farming this nearinfrared near infrared (NIR onsite site preprocessed pre processed OFF (OFF LBC, , (LBC) iSPAPLS, iSPAPLS iSPA PLS (iSPA-PLS) capability 8 8% Furthermore process iSPAPLSDA, iSPAPLSDA DA (iSPA-PLS-DA) 94 accuracy set 5332200 533 200 5332/200 (LBC (iSPA-PLS (iSPA-PLS-DA 9 533220 53 20 5332/20 53322 5 2 5332/2 5332/

The use of materials such as organofunctionalized silica for application in solid phase extraction (SPE) allows the preconcentration of several ions, including Pt, and subsequent detection. This work aims to synthesize and characterize an organofunctionalized silica (Sil-TMSDT) with the silylant N’(trimethoxysilyl)propylethylenetriamine and its application as a solid phase in the preconcentration Pt4+ ions in aqueous media, using detection by flame atomization atomic absorption spectroscopy (FAAS). The Fourier-transform infrared spectroscopy (FTIR) spectra and scanning electron microscopy (SEM) coupled with energy-dispersive spectroscopy (EDS) confirmed the aminofunctionalization of the silica. For the adsorption process, a preconcentration mini-column with 200 mg of Sil-TMSDT, a solution of 0.485 mg L−1 of K2[PtCl6] at pH 10 and HNO3 0.5 mol L−1 as eluent were used, obtaining an enrichment factor of 15-fold with retention efficiency higher than 99%. The Pt4+ ion determined by FAAS showed a linear response between 0.02 and 0.40 mg L−1; a linear coefficient where R = 0.9981; a 16-fold preconcentration factor; a limit of quantification (LOQ) and limit of detection (LOD) of 0.045 and 0.014 mg L−1, respectively. The proposal system showed analytical applicability to determining Pt4+ ion in an aqueous medium and could be used to detect traces of this potentially toxic metal in biological fluids such as urine and blood. SPE (SPE Pt SilTMSDT Sil TMSDT (Sil-TMSDT Ntrimethoxysilylpropylethylenetriamine N trimethoxysilyl propylethylenetriamine Pt4 media FAAS. . (FAAS) Fouriertransform Fourier transform FTIR (FTIR SEM (SEM energydispersive energy dispersive EDS (EDS process minicolumn mini column 20 SilTMSDT, TMSDT, Sil-TMSDT 0485 0 485 0.48 L1 L 1 L− K2PtCl6 KPtCl K2 PtCl6 K PtCl K2[PtCl6 HNO 05 5 0. 15fold fold 15 99 99% 002 02 0.0 040 40 0.4 0.9981 09981 9981 16fold 16 LOQ (LOQ LOD (LOD 0045 045 0.04 0014 014 0.01 respectively blood (FAAS 2 048 48 K2PtCl K2[PtCl 9 00 04 4 0.998 0998 998 004 001 01 0.99 099 0.9 09

Bisphenol A (BPA), an endocrine disruptor used in different commercial polymers, is a persistent pollutant commonly found in effluents. Conventional wastewater treatment processes have low chemical removal efficiency and are expensive. This work evaluated BPA removal using laccase enzyme produced from white rot fungus Pleurotus ostreatus. For the enzymatic production, residues of acai berry and pineapple were used as laccase inducers. The use of natural inducers led to a high enzyme production (1139 and 1031 U mL−1 to acai and pineapple, respectively). Bisphenol A was removed to a concentration lower than LOD (limit of detection) after 4 h. The degradation mechanism of BPA occurred by oxidation of methyl to hydroxymethyl group in a propane portion, with breakdown of the aromatic ring. The developed technology brought to the scene a new green, viable methodology, using vegetable waste, adding value to these residues and bringing an alternative to the BPA treatment. BPA, , (BPA) polymers effluents expensive ostreatus 1139 (113 103 mL1 mL 1 mL− respectively. respectively . respectively) limit detection h portion ring green methodology waste (BPA 113 (11 10 11 (1 (

In this work, a miniaturized version of the QuEChERS (quick, easy, cheap, effective, rugged, and safe) method was optimized, validated, and applied for extracting eight pesticide residues in anuran liver tissue samples. The extracts were quantified by high-performance liquid chromatography with diode array detection, and the detected residues in liver tissue samples were identified by tandem mass spectrometry-liquid chromatography. The optimized extraction method entailed the scale reduction of the QuEChERS method twenty times using 500 mg of liver tissue sample, 200 mg Mg2SO4, 50 mg NaCl, 1.5 mL of acetonitrile, and a mixture of 25 mg C18 + 25 mg PSA (primary-secondary amine) as dispersive solid-phase extraction sorbent. The method was validated using liver tissue samples spiked at two levels of pesticide concentrations according to the SANTE/11312/2021 document. Recoveries ranged from 91-110% with a relative standard deviation < 20%. The method robustness assessed by the Steiner and Youden test resulted in recovery rate variations of less than 2% for all pesticides after deliberated changes in seven variables. The validated method was applied to 72 liver tissue samples from two anuran species, registering residues of some pesticides in 31 samples. The proposed method proved to be efficient, precise, and robust for determining pesticide residues in anuran liver tissues. work quick, quick (quick easy cheap effective rugged safe highperformance high performance detection spectrometryliquid spectrometry sample 20 Mg2SO4 MgSO Mg SO 5 NaCl 15 1 1. acetonitrile 2 C C1 primarysecondary primary secondary amine solidphase solid phase sorbent SANTE113122021 SANTE 11312 2021 SANTE/11312/202 document 91110% 91110 91 110% 110 91-110 20% variables 7 species 3 efficient precise tissues Mg2SO SANTE11312202 1131 202 SANTE/11312/20 9111 9 11 91-11 SANTE1131220 113 SANTE/11312/2 911 91-1 SANTE113122 SANTE/11312/ 91- SANTE11312 SANTE/11312 SANTE1131 SANTE/1131 SANTE113 SANTE/113 SANTE11 SANTE/11 SANTE1 SANTE/1 SANTE/

The acetalization or transacetalization reactions produce acetals or ketals used in cosmetics, food, pharmaceuticals, and fuel additives. Besides synthesizing several products, the acetalization or transacetalization reactions can protect carbonyl groups, 1,2 and 1,3-diols in multi-step synthesis. This work studies the transacetalization of glycerol with 2,2-dimethoxypropane (2,2-DMP) to yield 2,2-dimethyl-4-hydroxymethyl-1,3-dioxolane (solketal) by catalyzing with USY, HBeta, and HZSM-5 zeolites under cleaner and mild reaction conditions (reaction temperature: 25 °C; 2,2-DMP/glycerol molar ratio: 1; reaction time: 1 h; and catalyst concentration: 0.05-5 wt.%). For catalyst concentration equal to or greater than 2,5 wt.%, glycerol conversion stabilized near 96-97% for the three zeolites tested. The product selectivities also assume a constant value, close to 97% for solketal. For the lowest concentration of catalyst, the influence of the zeolite properties on the glycerol conversion, such as acidity and the strong/weak acid site ratio, was observed. Concerning the selectivity of the products, the results suggested that it can be based on zeolite topology, active sites at the particle surface, and the relative amount of micro and mesoporous HBeta, the most selective catalyst for acetals production, was reused at least once without loss of activity and selectivity. cosmetics food pharmaceuticals additives products groups 12 2 1, 1,3diols 13diols diols 1,3 3 multistep multi step synthesis 2,2dimethoxypropane 22dimethoxypropane dimethoxypropane 2,2 2,2DMP 22DMP DMP (2,2-DMP 2,2dimethyl4hydroxymethyl1,3dioxolane 22dimethyl4hydroxymethyl13dioxolane dimethylhydroxymethyldioxolane dimethyl 4 hydroxymethyl dioxolane solketal (solketal USY HBeta HZSM5 HZSM 5 HZSM- temperature °C C 2,2DMP/glycerol 22DMPglycerol DMPglycerol DMP/glycerol ratio time h 0.055 0055 0.05 0 05 0.05- wt.%. wt wt.% . wt.%) 2, 9697% 9697 96 97 96-97 tested value strongweak strong weak observed topology surface production 3diols 13 2dimethoxypropane 22 2DMP 2dimethyl4hydroxymethyl1 3dioxolane 055 005 0.0 wt. 969 9 96-9 dimethylhydroxymethyl 2dimethyl4hydroxymethyl 00 0. 96-

The present work reports the in situ fabrication of Ag nanoparticles (AgNPs) in polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP) over pre-patterned hydrophobic stripes on a hydrophilic glass surface. Microcontact printing (μCP) using octadecyltrichlorosilane (OTS) as “ink” was used to obtain these chemically modified substrates. A comparison of the results of the PS-b-P2VP self-assembly over a bare glass substrate and a pre-patterned glass substrate demonstrated the influence of the pattern on the film morphology. Polymeric films of Ag+ and PS-b-P2VP were prepared on a pre-patterned substrate and heated at 150 °C to enable the self-reconstruction of the polymeric matrix and the in situ formation of AgNPs (average particle size of approximately 100 nm). The AgNP/PS-b-P2VP thin films were characterized using UV-Vis spectroscopy and atomic force microscopy. The results demonstrate that the concentration of the solutions of Ag+/PS-b-P2VP used to prepare the films strongly influences the morphologies and dispersion of AgNPs. Moreover, the surface-enhanced Raman spectroscopy (SERS) activity of the fabricated polymer nanocomposites using Nile Blue as a molecular probe shows the importance of the chemical modification of the substrate in the enhancement of the SERS signal. (AgNPs polystyrenebpoly2vinylpyridine polystyrenebpolyvinylpyridine polystyrene b poly 2 vinylpyridine polystyrene-b-poly(2-vinylpyridine PSbP2VP PSbPVP PS P2VP P VP (PS-b-P2VP prepatterned pre patterned surface μCP (μCP OTS (OTS ink “ink substrates selfassembly self assembly morphology 15 C selfreconstruction reconstruction average 10 nm. nm . nm) AgNP/PSbP2VP AgNPPSbP2VP AgNPPSbPVP AgNP/PS AgNP UVVis UV Vis microscopy Ag+/PSbP2VP AgPSbP2VP AgPSbPVP Ag+/PS Moreover surfaceenhanced enhanced (SERS signal polystyrenebpoly PSbP PVP 1 AgNPPSbP AgNPPS AgPSbP AgPS

Ana Rosa Kucinski Silva, lecturer in the Department of Chemistry at the University of São Paulo (São Paulo, Brazil), had her academic career violently interrupted in April 1974 when was kidnapped, tortured, and murdered by the repression forces of the military dictatorship (1964-1985). Since then, papers and books were written about her, emphasizing her political activities but much less is known on her academic activities. Fifty years after her disappearance, this work aims to contribute to fill this gap. Silva Brazil, Brazil , Brazil) 197 kidnapped tortured 19641985. 19641985 1964 1985 . (1964-1985) then disappearance gap 19 1964198 196 198 (1964-1985 1 196419 (1964-198 19641 (1964-19 (1964-1 (1964- (1964 (196 (19 (1 (

ABSTRACT Due to the importance of grain production, and the need to work the soil under limited moisture, the aim of this study was to develop computer software to predict the tractive capacity of wheeled tractors for two types of tyre, the effect of different inflation pressures and levels of soil moisture. A mathematical model was developed to predict the tractive capacity of a 4 x 2 AFT tractor. Software was developed and tested by comparing the computational data with those from tests of a working tractor in the field. The parameters under evaluation were drawbar force and front and rear drive wheel slip. At both moisture levels, the bias tyres had the lowest front to rear slip ratio at the lower pressure; the ratios were similar when equipped with radial tyres. The bias tyres show maximum force at a slip ratio of 1.09 at the higher pressure and 1.03 at the lower, while for the radial tyres the ratio was 1.05 at the higher pressure and 1.07 at the lower. Software was developed to process data from the model, with the results used for estimating the tractive force of the tractor. The tractive force was overestimated by the model, which needs further adjustment for direct application in the field. production tyre field 109 1 09 1.0 103 03 105 05 107 07 10 0 1.