bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of the Effect of the Surfactant Linear Alkylbenzene Sulfonate (LAS) on the Coagulation of Aged Microplastic
Authors: Teran Francisco Javier Cuba , Morais Vinícius Paes Corrêa de , Costa Jordana Fernandes , Cuba Renata Medici Frayne 
Published: April 2024

Objective: Evaluate the effect of linear alkylbenzene sulfonate (LAS) surfactant on the coagulation of aged microplastic.

Theoretical Framework: Chemical coagulation is one of the steps adopted in water treatment that can help remove microplastics. During coagulation, suspended particles agglomerate, increasing the efficiency of removing these particles in the sedimentation stage. However, when coagulation occurs in the presence of surfactants, evidence points to deficits in removal capacity.

Method: Using Jar Test tests, the optimal parameters for microplastic removal were determined with aluminum sulfate as a coagulating agent in the presence and absence of the surfactant linear alkyl benzene sulfonate (LAS). The LAS concentrations studied were in the range of 20 mg/L to 300 mg/L. Microplastic removal efficiency was evaluated by measuring turbidity.

Results and Discussions: The combination of pH and coagulant concentration values that best suited the system were 5.0 and 4.25 mg/L, respectively. Due to the addition of surfactants, a decrease in removal efficiency was observed, with an average value ranging from 94.79% to 76.50% due to the interaction of polyethylene spheres with the surfactant.

Research Implications: As explained, due to the coexistence of microplastics and surfactants in the aqueous environment, studies that describe chemical coagulation under these conditions have great value for optimizing treatment systems and technologies.

Research Originality/Value: The use of aged microplastics aims to approximate their natural occurrence.
Leather Tanning Sludge in Cement Mortar: Sustainable Valorisation
Authors: Martins Ramiro José Espinheira , Cabral Rafaela Mulinari , Pietrobelli Juliana Martins Teixeira Abreu 
Published: April 2024

Purpose: This study aims to investigate the valorisation of sludge from Leather Tannery Wastewater Treatment Plants (LTWWTP) by incorporating it into cement mortars.

Theoretical framework: The substantial quantity of waste generated by industries coupled with the scarcity of natural resources calls for the analysis, development, and implementation of treatment methods to recover and reuse materials, thereby minimising the environmental impact of waste disposal. The leather tanning industry, a significant polluter due to its use of hazardous and heavy materials, requires sustainable solutions for waste management. One promising approach is the incorporation of waste into cementitious matrices.

Method: Three scenarios were examined: low-moisture sludge, ash obtained via incineration, and wet oxidation. Test specimens were prepared with varying proportions of cement replacement (0, 3, 5, 7, and 10%), and their flexural and compressive strengths were evaluated. Additionally, chemical analyses were conducted to assess solubility.

Results and Conclusion: The results indicate that sludge can be used in small proportions without compromising the mechanical strength of the mortar. Substituting 10% cement with ash using the INC-2 incineration method improved mortar quality, exhibiting a higher compressive strength of 41 MPa and minimal water absorption (3.28%).

Research implications: Drawing from these promising findings, it can be confidently asserted that utilising WWTP sludge in mortar is a practical, eco-conscious solution for civil construction. Furthermore, it is a pivotal step towards addressing the challenge of hazardous sludge disposal.

Originality/value: The findings from this research will contribute to sustainable waste management practices and pave the way for responsible and eco-friendly utilisation of industrial waste in cementitious materials, thus minimising environmental burdens.
Academic Literacy in University Students
Authors: Mohamed-Amar Rachida , Mohamed-Amar Horía 
Published: April 2024

Objective: The aim of this research is to explore the academic literacy of university students, evaluated as a construct composed of five dimensions: academic writing and discursive genres, stages and steps in academic writing, sources of information used, digital literacy, and the use of digital platforms for collecting academic works.

Theoretical Framework: This section presents the main concepts and academic literature that support the research, providing a solid foundation to understand the context of the study.

Method: The methodology adopted for this research is quantitative in nature, with a cross-sectional design, and exploratory and descriptive scope. Data collection was conducted using a questionnaire composed of five dimensions, in order to cover all aspects inherent to academic literacy.

Results and Discussion: The study on academic writing in university students reveals significant deficiencies in essential practices and skills. A high percentage of students infrequently engage in writing academic texts and self-assess as deficient in essay writing, which suggests a lack of confidence and critical ability. Moreover, most do not follow proper planning or drafting processes in their work and tend to opt for less rigorous information sources like Google, instead of specialized academic databases. These findings indicate an urgent need to reinforce the teaching of academic writing and digital literacy, with a focus on improving argument structuring and critical evaluation of sources to prepare students for future academic and professional challenges.

Originality/Value: This study provides a critical perspective on the effectiveness of academic writing practices in higher education, identifying key areas for improvement of essential skills and digital literacy among university students.
Violencia de Obregón desde los lentes revisionistas de los estudios del género
Authors: Cifuentes Acevedo Daniela 
Published: April 2024

Violencia (1962) by Alejandro Obregón is a milestone in the history of art in Colombia. It is regarded as an artwork that found a way to symbolize the violence suffered throughout Colombia’s territory and history through modernist tropes. The fusion of body-woman with territory-mountain has been analyzed as a formal strategy to solve the need for a non-literal image of war, but this iconic work has not yet been problematized from the perspective of gender studies. Body politics, studies on the male gaze, and ecofeminism provide the theoretical apparatus that will allow me to argue that Obregón’s painting poses a simultaneous process of territorialization of the body and feminization of the territory, where both body-woman and territory-nature are represented with analogous passive traits.
Agrarian Reforms, Modes of Production and Farm Bills 2020 in Punjab
Authors: Kaur Simranjeet 
Published: April 2024

In the light of historical developments and the nature of Punjab’s agrarian milieu, this paper examines the latest agrarian intervention proposed by the State- ’Farm Bills 2020’. The paper begins with an analysis current mode of production in Punjab by investigating factors like institutional credit market, land prices, accumulation of capital, input-output ratio, commodification, commercialization, labor functions, and technological modernity. This is followed by a discussion on the historical background of agrarian reforms in Punjab. This discussion attempts to identify causes of proliferation and impacts of Arhtiya class of Intermediaries.
In this way, the present paper seeks to study the nature of the intervention purported by the Farm Bills in terms of its interaction with the transforming social contradictions, and possible implications on the socio-economic framework, rural sociology, and existing agrarian relations in Punjab.
Retrieving meaningful information from detrital zircon in Palaeoproterozoic sedimentary rocks: Provenance, timing of deposition, metamorphism and alteration of zircon in sandstones of the Pretoria Group in the Transvaal Basin, South Africa
Authors: Andersen T. , Elburg M.A. , Kristoffersen M. , de Kock M. 
Published: April 2024

Abstract
The Palaeoproterozoic sandstones and quartzites of the Pretoria Group (Transvaal Supergroup) in the Transvaal Basin of South Africa are important markers for regional correlations and dating of events of global importance (e.g., the Great Oxidation Event). The succession has few independent age markers, and much of the discussion about the time of deposition and the source of material of these rocks has been based on data from detrital zircon suites.
The clastic sedimentary rocks of the Pretoria Group contain detrital zircon grains ranging from the Mesoarchaean to ages that are near-contemporaneous to, and even younger than the overlying and crosscutting igneous rocks of the Bushveld Complex. We show that the U-Pb age and Lu-Hf isotope distributions of the detrital zircon population in the Pretoria Group are the result of three different types of processes, acting successively: (1) Crystallisation in the igneous or metamorphic protosource rock (i.e., the rock where the zircon originally crystallised), (2) Metamorphic and hydrothermal resetting of the U-Pb chronometer induced by emplacement and crystallisation of the 2 055 Ma Bushveld Complex, and (3) Late, low-temperature processes (e.g., weathering).
Critical age markers of maximum ages of deposition obtained after excluding effects of (2) and (3) are the 2 200 Ma Magaliesberg Formation (outside of the Bushveld aureole) and the 2 080 to 2 100 Ma Lakenvalei Formation. The Leeuwpoort Formation is a worst-case example, containing both young (&lt;2 200 Ma) unmodified detrital zircon and hydrothermally altered zircon in the same age range. The two can only be distinguished from trace element analyses.
Age distributions of Archaean and early Palaeoproterozoic zircon age fractions overlap with detrital zircon age suites in lower (i.e., pre-Timeball Hill Formation) parts of the Transvaal Supergroup, suggesting recycling within the basin or from the basin margin. Overlaps in 2 200 to 2 350 Ma zircon ages with those of volcanogenic zircon in the Timeball Hill Formation again suggest recycling. The origin of 2 080 to 2 150 Ma zircon is uncertain, but neither poorly constrained sources in the Kaapvaal Craton (e.g., Okwa Basement Complex) nor recycling of volcanogenic material from post-Magaliesberg formations can be ruled out.
Uma análise do choque cardiogênico
Authors: Rodrigues Gabriel Michelini , Badaró Cláudio Barros , Ferreira Rian Magro , Siqueira Emílio Conceição de 
Published: April 2024

Objetivo: Analisar as características do Choque Cardiogênico (CC). Revisão bibliográfica: O CC é causado por comprometimento grave do desempenho do miocárdio que resulta em débito cardíaco diminuído, hipoperfusão de órgãos-alvo e hipóxia. Clinicamente, isso se apresenta como hipotensão refratária à ressuscitação volêmica com características de hipoperfusão de órgão-alvo que requer intervenção farmacológica ou mecânica. A etiologia mais comum do CC é a isquemia miocárdica aguda, mas outras etiologias abrangem cardiomiopatia terminal, miocardite, tamponamento cardíaco, doença cardíaca valvular grave e arritmias. A mortalidade por choque cardiogênico permanece elevada, variando de 40 a 67% entre os casos mais graves. Considerações finais: O choque cardiogênico é uma condição grave e potencialmente falta em que há falência do miocárdio que se torna incapaz de suprir as necessidades metabólicas, levando a disfunção de múltiplos órgãos. Seu manejo perpassa pelo reconhecimento com a rápida realização da ecocardiografia e medição de marcadores como lactato além do controle da hipertermia, sedação, correção de distúrbios e melhora da bomba cardíaca com a utilização de drogas inotrópicas, vasopressores e vasodilatadores.
Análise dos efeitos da exposição do feto ao cigarro eletrônico na gravidez
Authors: Braga Paula Ferreira , Silva Laís Gonçalves , Lopes Jeyson Césary , Silva Juliana Lilis da , Amâncio Natália de Fátima Gonçalves 
Published: April 2024

Objetivo: Encontrar na literatura científica os efeitos da exposição do feto em desenvolvimento ao cigarro eletrônico (CE). Métodos: Trata-se de uma revisão integrativa de literatura, com artigos em Português e Inglês, publicados nos últimos cinco anos (2019 a 2023), essa pesquisa foi realizada em agosto e setembro de 2023, utilizou os descritores: Electronic Nicotine Delivery Systems, pregnancy, fetus, cigarros eletrônicos, vaping, gravidez, combinando operadores booleanos “and” e “or”, com busca nas bases de dados: Google Scholar; Biblioteca Virtual de Saúde (BVS), National Library of Medicine (PubMed) e EBSCOhost. Resultados: Foram selecionados 20 artigos que obedeceram aos critérios de inclusão e exclusão, foi possível encontrar diversas associações do uso de vaping, durante e após a gravidez, a efeitos prejudiciais ao feto. Há consequências pulmonares, neurológicas, comportamentais, vasculares materno-fetal, expressão gênica, inflamatórias, metabólicas e hepáticas. Também há repercussões antropométricas, prematuridade, aborto e redução do aleitamento materno. Considerações finais: Esses achados provam o poder de disfunção dessa substância ao concepto, logo, é preciso desestimular seu consumo, principalmente durante e após a gestação. Esse artigo contribui para o conhecimento científico, ao sintetizar pesquisas atuais sobre vaping, assim, mais estudos dessa temática são essenciais para melhor elucidação sobre seus malefícios ao feto e ao recém-nascido.
Paysage et catégories topologiques
Authors: Beyaert-Geslin Anne 
Published: April 2024

Pourquoi reconnaissons-nous un paysage là où un tableau montre deux bandes superposées ? Comment, plus généralement, stabilisons-nous l’icône du paysage ? Si de telles questions se posent devant les peintures de la série de Thierry de Cordier, intitulée Un homme, une maison et un paysage, qui les situe dès l’abord dans le genre du paysage, elles se posent aussi devant les œuvres de Mark Rothko qui, ne se trouvant pas inscrites dans le genre, utilisent pourtant certains principes fondateurs du paysage tels l’horizontalité, la superposition de bande et en certains cas, le format du paysage.On interrogera donc ce primat topologique du paysage qui convoque les catégories topologiques de Greimas, de même que les notions de support et de format qui révèlent ici leur importance pour la stabilisation iconique.Voyant comment une icône du paysage se stabilise (ou ne se stabilise pas), on fera le lien entre le genre du paysage et les pratiques énonciatives, une pratique de peintre-écrivain pour de Cordier qui recourt au support de la page et associe peinture et écriture contre une pratique de peintre pour Rothko.
Perspective and the geometric control of the pictorial act
Authors: Fiers William 
Published: April 2024

La peinture est l’œuvre d’une instance de l’énonciation, le peintre, qui inscrit son geste sur une surface d’inscription, la toile. Elle est le résultat d’une mise en forme, d’un faire artistique, relevant d’une compétence technique gestuelle, mais également d’un savoir- comment-faire, relevant d’une compétence cognitive. Quand la mise en peinture technique d’un simple cercle est le résultat d’un faire maîtrisé  une figure décrite par toute ligne dont une extrémité est fixe, et l’autre, mobile (définition générique)  son savoir-comment-faire suppose une connaissance – le cercle comme lieu des points situés à égale distance d’un point nommé centre (définition spécifique) – qui guide et structure le geste technique. Si l’on applique ces considérations à la construction de la perspective, on sera amené à considérer celle-ci comme la mise en application d’une compétence cognitive spécifique. A travers un tableau d’Auguste Aridas (1848-1929, peintre et professeur de dessin à Limoges pendant de longues années), représentant un véritable cours sur la mise en perspective, tant au niveau énonciatif qu’au niveau énoncif, nous essaierons de mettre au clair le fonctionnement sémiotique de la perspective comme « dispositif d’énonciation paradigmatique » (Damisch).
Création et restructuration identitaire. Pour une sémiotique de la créativité
Authors: Basso Fossali Pierluigi 
Published: April 2024

La création articule la dialectique entre perception et imagination, langue et textes, praxis et invention. Donc, elle relève d’une écologie sémiotique qui concerne le temps (la création convoque la mémoire à fin d’oublier des connexions sédimentées) et l’espace (elle reformule la relation tensive entre domaine opérable de valeurs autonomes et domaine opératif de valeurs hétéronomes). La création est une « héroicisation » de l’initiative étant donné qu’elle symbolise le sujet comme capable de singularisation au dedans d’un paysage de valeurs préconstitués, sans qu’il doive renoncer à un principe d’organisation. Au contraire, la création va instaurer un ordre naissant capable de fertiliser tout un champ de production sémiotique. La création traduit l’espace d’effectuation de l’agir dans un scénario figurale où on assiste à la de-dramatisation cathartique de la dramaturgie expérientielle garantie par les émotions. Le caractère exaltant de la création est la transposition des patterns émotionnels de la souveraineté du destin à la juridiction du possible.
Kitsch et dérision
Authors: Bertrand Denis 
Published: April 2024

En assumant une des propriétés de la dénomination « kitsch », qui est d’intégrer dans la désignation même une modalité de jugement, on s’attache à dégager la composition sémiotique et énonciative de ce jugement, ainsi que ses implications quant à la « réalité » fluctuante de l’objet qu’il désigne ainsi. Ce jugement relève du discours de la dérision dont on cherchera à mettre en évidence le composé d’humour et d’ironie qu’il manifeste. La distinction entre ces deux formes de dérision repose sur les deux régimes de déformation d’une règle qui les caractérisent : déformation d’un ordre syntagmatique dans le cas de l’humour, générant des valeurs extrémales d’hyper-qualification, déformation d’un ordre paradigmatique dans celui de l’ironie, générant des valeurs de disqualification. Quel en est le régime dans le cas du jugement de kitsch ? Et surtout comment se positionnent les instances appelées à participer à la scène kitsch du sens ? La ronde énonciative des instances en jeu dans cette scénographie, victimes consentantes de la praxis et de l’esthésis discursives, est envisagée notamment à partir d’un texte kitsch par excellence, Le Dictionnaire des idées reçues de Flaubert.
La sémiotique est-elle un art ? Le faire sémiotique comme « art libéral »
Authors: Fontanille Jacques 
Published: April 2024

En référence à la classification médiévale des activités et domaines culturels, la sémiotique, saisie principalement comme un « faire », serait un des « arts libéraux » contemporains, c’est-à-dire, selon l’acception courante, « ceux dans lesquels le travail intellectuel est dominant », ce en quoi ils s’opposent par exemple aux « arts mécaniques » ou aux « beaux-arts », qui mettent en œuvre d’autres facultés dominantes. Dans cette perspective, bien entendu, la sémiotique perd son caractère de « projet scientifique », au sens où l’entendait Greimas, c’est-à-dire de connaissance généralisable, projective, construite par voie hypothético-déductive, reposant sur une théorie, des modèles et des méthodes empiriques. Mais elle ne le perd pas plus, pour autant, que la médecine, quand cette dernière passe de la recherche dite « in vitro » à la recherche dite « clinique » ; tout comme pour la médecine, en effet, il s’agit du passage d’une science fondamentale à une « pratique scientifique ». La sémiotique considérée comme un art est donc une pratique, où l’intelligence, la sensibilité, l’émotion et le goût ont également part. Et, tout comme la médecine encore, c’est une pratique dont le « texte » est un discours scientifique. C’est donc sur le fond de cette problématique générale qu’après avoir circonscrit le faire sémiotique comme « art » et comme « pratique », je voudrais ébaucher la description de quelques pratiques sémiotiques typiques : celles, notamment, de Jean-Marie Floch, d’Eric Landowski, d’Algirdas Julien Greimas ou de Claude Zilberberg.
Mémoire et médiation paysagère
Authors: Parouty-David Françoise 
Published: April 2024

Notre objectif est de souligner la fonction médiatrice du paysage. Nous nous appuyons sur le paysage urbain comme surface d’inscription qui fait foi des événements historiques et des idées qui y sont corrélées, vérifiables dans quelques occurrences devenues emblématiques d’un sens et d’une valeur. Nous proposons une définition simplifiée du paysage qui permette de souligner le lien qui l’unit à la mémoire, structurante pour le sujet, dans ses deux dimensions temporelle et spatiale. Nous explorons ensuite les principales modalités d’inscription de la mémoire dans le paysage qui relèvent d’opérations énonciatives distinctes, avant de terminer par une recension des fonctions qu’induisent les pratiques, convaincue que nous sommes que le sens n’est jamais donné directement mais toujours médiatisé par une pratique qui le fait exister sous des formes parfois motivées par des logiques sociales.
Características do Endividamento no Cartão de Crédito dos Estudantes da Universidade Estadual de Maringá
Authors: Motta Vitor Garcia , Da Silva Marcos Vinicius de Souza , Garcia João Vitor , Couto Ana Cristina Lima 
Published: April 2024

Objetivo: Analisar o endividamento, com ênfase no uso do cartão de crédito, bem como o nível de conhecimento financeiro, dos estudantes do campus sede da Universidade Estadual de Maringá (UEM) no ano de 2023.
Referencial teórico: Baseada no amplo uso do cartão de crédito como meio de pagamento e acesso ao crédito num contexto de elevado endividamento e inadimplência das famílias brasileiras. Nesse contexto, aborda-se alguns aspectos da importância da educação financeira.
Método: Aplicação de questionário com perguntas sobre hábitos financeiros dos estudantes da UEM, analisando a frequência de uso do cartão de crédito, a existência de dívidas em atraso, o nível de conhecimento sobre juros e benefícios do cartão, bem como aspectos sobre endividamento e planejamento financeiro.
Resultados e conclusões: Os resultados mostraram que o perfil de endividamento dos estudantes da UEM diverge daquele encontrado no país. O uso do cartão de crédito aparece em segundo lugar como meio de pagamento preferível pelos alunos, que possuem baixo nível de endividamento e inadimplência. No entanto, aproximadamente metade dos estudantes não adotam práticas de planejamento financeiro, o que é preocupante.
Implicações da pesquisa: O estudo recomenda que a universidade promova ações de educação financeira com o objetivo de mostrar a importância do ato de planejar as finanças individuais.
Originalidade/valor: Escassez de estudos que abordam especificamente o endividamento dos estudantes universitários com ênfase no uso do cartão de crédito.