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This work investigates the plasma deposition of Ti-C based coatings on AISI 420 steel using a cathodic cage technique with titanium and graphite components. The study examines two treatment conditions: cathodic potential and floating potential samples, with the objective of evaluating their influence on the coating properties. The results indicate that the cathodic potential treatment results in the formation of thicker coatings with enhanced microhardness, thereby improving wear resistance. Although both treatments demonstrated satisfactory wear resistance, they negatively impacted the corrosion resistance of the steel. X-ray diffraction analysis revealed the formation of TiC, Fe3C, Cr7C3 and Cr23C6 phases in the treated samples, which contribute to the improved microhardness and wear resistance. Wear tests confirmed reduced wear volume in the treated samples. The cathodic potential treatment exhibited greater microhardness and an extensive carburized layer, but the corrosion and wear resistance were similar in both conditions.

Tailings generated during ore processing may host significant residual contents of valuable commodities, including critical metals. The particle properties of the tailings, such as mineralogy, particle size, and the surface liberation of ore minerals, strongly control processing behaviour. This study explores a novel combination of methods for incorporating particle data, derived from automated mineralogy, into geometallurgical models of tailings deposits to better understand their reprocessing potential and the economic feasibility of re-mining. This was achieved through binning of different particle types, geostatistical modelling of particle bin frequencies, and bootstrap resampling to reconstruct particle populations. The spatial distributions of processing-relevant particle properties throughout the tailings deposit were predicted with corresponding uncertainties. There are clear systematic trends in the spatial distributions of different particle types, resulting from the sedimentary-style deposition of the tailings. For instance, the tailings nearer the dam walls comprise coarser, silicate-rich particles, while fine-grained and well-liberated sulphide mineral particles are more abundant in the centre of the tailings deposit. As a result, robust models could be developed for the spatial distributions of particle size and mineralogy, which strongly control the sorting of particles during deposition, and other related properties, such as sulphide mineral grain sizes. Finally, a bulk sulphide flotation process was simulated and acid mine drainage potential estimated using the interpolated particle data. Around 58% of the sulphide minerals present could be recoverable by flotation, with the recoverable sulphide portion decreasing towards the centre of the TSF due to the fine-grained nature of the sulphide minerals. The acid mine drainage potential of the tailings is estimated to be moderate to high, indicating that the carbonate minerals present are not sufficient to neutralise the high acid-generating potential of the sulphide minerals. Overall, this study demonstrates how particle-based geometallurgical models can be developed and utilised for practical applications, with the aim of improving the accuracy of resource and reserve estimations of tailings deposits and the sustainable and responsible management of anthropogenic resources. The methodology proposed here can be easily transferred to other tailings deposits.

Resumo Este estudo é orientado pela seguinte pergunta de pesquisa: como a Amazônia brasileira é abordada em livros didáticos de Ciências da Natureza e Matemática utilizados no Ensino Médio? Seu objetivo é conhecer os aspectos da Amazônia apresentados nesses livros. Os processos metodológicos desta investigação são fundamentados pelos princípios da pesquisa documental. A coleção Multiversos foi aprovada pelo PNLD em 2021 e é composta de seis livros didáticos da área das Ciências da Natureza e suas Tecnologias, e seis de Matemática e suas Tecnologias. Para as análises utilizou-se o método de Análise de Conteúdo, com apresentação e descrição das unidades de registro. Os resultados indicam que a Amazônia brasileira é abordada de forma insuficiente nos LDs, por vezes servindo apenas como contextualização para exercícios. Além disso, os livros didáticos tendem a destacar aspectos negativos, como queimadas e desmatamentos, em detrimento da riqueza cultural, social, natural e ecológica da região.

ABSTRACT Objective: This study aimed to evaluate the surgical treatment of diaphyseal femur fractures in polytraumatized children, considering consolidation rate, complications, and function as outcomes of interest. Methods: This is a quantitative, cross-sectional, and retrospective study of medical records of patients treated from 2012 to 2021. The 39 patients (41 femurs) were divided into four groups according to the method of osteosynthesis. We used the IBM SPSS Statistics software, version 20 (SPSS Inc, Chicago, IL), and performed Chi-square, Fisher, Kruskal-Wallis, and Shapiro-Wilk tests with a significance level of 5%. Results: We observed six complications among patients. Functional outcomes were satisfactory in 40 cases (97.6%) and unsatisfactory in one case (2.40%) according to the adopted criteria. We found one case (2.40%) of non-union and one case (2.40%) of malunion, whereas 39 cases (95.20%) achieved full consolidation. Conclusions: Flexible intramedullary nails and external fixators are the preferred options for patients aged 5 to 10 years. Intramedullary nails, plates, or external fixators are prioritized for patients over 11 years old. The type and pattern of fractures were considered relevant for treatment selection. Level of evidence III, Therapeutic study - Investigation of outcomes and treatment. Comparative retrospective study.

ABSTRACT Alternative materials can be used to reduce reliance on mining for P-based fertilizers. In this sense, the pyrolysis process of bovine bones produces the “bone char”, which can be used as a source of P. This study aimed to characterize bone char and conduct a comparative analysis with both soluble (triple superphosphate) and non-soluble (Bayóvar phosphate rock) phosphate fertilizers, specifically examining its behavior in soil and uptake by plants. Bone char characterization was performed by X-ray diffraction (XRD), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), and scanning electron microscopy coupled with energy-dispersive (SEM-EDS). The XRD analyses have shown the presence of hydroxyapatite in the bone char, bands assigned to P-O stretching from phosphate have been observed in ATR-FTIR, and Ca, P, C, and O elements were identified in the materials by EDS analyses. Solubility from fertilizer extractants was higher for bone char compared to Bayóvar, and both sources showed lower solubility compared to triple superphosphate. Cumulative amount of P released from bone char was higher than Bayóvar and lower than triple superphosphate. Amount of total dry matter, total shoot P uptake, and total shoot Ca uptake were higher for triple superphosphate compared to bone char and Bayóvar. Release profile of P from bone char strongly suggests this material can be used as a slow-release P source, with intermediate solubility between soluble and non-soluble commercialized sources.

Abstract Aim This study aimed to analyze aspects of adult emergence of Phyllocycla Calvert, 1948 (Odonata: Gomphidae) in artificial environments. Samplings were conducted in Sanharó stream, Caxias municipality, Maranhão State, Brazil. Methods Specimens were examined under a stereomicroscope and identified to the lowest possible taxonomic level. Polystyrene boxes were used as rearing sites, and the following methods were analyzed: a) sand; b) strips of filter paper simulating substrate; c) without substrate. For emergence, the rearing sites had their lids removed and were placed inside larger jars with mesh windows, less water, with most of the substrate exposed above the water level. To verify the difference between treatments, the Log-rank test and Kaplan-Meier survival curves were used. Results The curves indicated that emergences occurred more frequently in the initial days of rearing. There was an absence of statistical difference between groups. Despite that, all treatments showed success in emergence, with larvae without substrate emerging more quickly. Conclusions By exploring the use of different substrates in Odonata rearing, this research provides guidelines for optimizing laboratory conditions, helping to overcome experimental challenges and supporting new studies and inventories.

A compostagem é um processo fundamental na gestão sustentável de resíduos orgânicos, oferecendo uma solução ambientalmente responsável para a reciclagem de matéria orgânica. Trata-se de uma produção de calor de origem biológica, convertendo rapidamente a matéria orgânica e liberando substâncias úteis e benéficas ao solo. Assim, este trabalho tem o objetivo de analisar a qualidade e o processo de compostagem com esterco de ovinos e palha de feijão e avaliar seu desempenho no cultivo de hortaliças. O estudo foi conduzido na área experimental em Ponta Grossa, Paraná. O método de compostagem utilizado foi o tipo leira. Foram utilizadas palha de feijão e esterco de ovinos, com um período de formação do composto de 120 dias. Para avaliar a compostagem, foi escolhida a cultura da alface, avaliando-se a altura da planta, massa fresca e seca, sistema radicular, diâmetro da planta e número de folhas em diferentes solos e misturas com fertilizantes. A compostagem apresentou resultados positivos nos parâmetros de pH, CTC, matéria orgânica, umidade e temperatura. Os materiais orgânicos resultantes mostraram redução na cor natural, diminuição de odores e maturação adequada. Na cultura da alface, o composto contribuiu para o desenvolvimento da cultura em comparação ao solo sem a presença do composto.

Abstract A continuous increase in levels of atmospheric pollution and emission restrictions has forced scientists and engineers to adopt new strategies to improve and develop internal combustion engines. One strategy is based on the development of new simulation methodologies using computational fluid dynamic (CFD) techniques, proposed in the present article. In this study,the dynamic loop methodology with ANSYS Fluent code is proposed to perform the numerical simulation ofa four-stroke spark ignition engine. The complexity of the real case was first simplified with three-dimensional CAD geometry, which was then discretized in ANSYS Meshing, whereby a hybrid mesh was created using prismatic and tetrahedral elements. Simulations for in-cylinder analyses were performed in cold flow and employing common flow parameters, such as swirl and tumble. The mesh quality results were classified as good or excellent, being higher than 0.79 for orthogonal quality criteria and lower than 0.36 for skewness criteria. Turbulent effects were introduced concerning the opening and closing of the valves. It was found that the turbulence increases during the intake stroke up to 90°, and during the power stroke, wherein the of the piston bowl, had a great contributionthat can be seen from the swirl and tumble profile for the engine cycle. In the case of the turbulence intensity, a sharp increase was registered during the admission step up to 90°, at which point the turbulence intensity was 4.0. It canbe concluded that this is an innovative approach, capable of simulating the engine motion profile in cold flow.

Abstract Industrial Kitchens are very energy-intensive businesses, consuming between five and seven times more energy per square meter than other commercial spaces like office spaces and retail stores. Still, very little research has been carried out on improving the energy efficiency of this industry. This paper presents the FIKElectricity dataset, a collection of electricity data from three Portuguese restaurant kitchens during their daily operation. The duration of the datasets spans three to four weeks in each industrial kitchen and comprises aggregated and individual appliance consumption, collected at 1 Hz and $$\frac{1}{5}$$ 1 5 Hz, respectively. The public release of FIKElectricity is expected to draw more attention from the research community to this overlooked industrial sector. The data collection and post-processing methods are thoroughly described in this paper, as well as the dataset organization. Examples showing the dataset’s quality and instructions for its reuse are also provided.

In this study, nanostructured coatings of VN2/Fe3N/Fe4N are synthesized by Plasma Deposition (CCPD) using a vanadium cathodic cage and subject to cathodic and floating potential treatments. Microstructural and mechanical properties of coated SAE 1080 steel samples are investigated using X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Vickers microhardness (HV), and surface roughness analysis. The coating produced under cathodic potential treatment exhibited a nitride-based microstructure (VN2, Fe3N, Fe4N), with surface morphology consisting of clusters of granular structures with varied particle sizes. The coating produced under floating potential predominantly exhibited the iron nitride phase (Fe3N) with a morphology composed of uniformly sized grains. Microhardness testing showed that both layers exhibited more excellent plastic deformation resistance than the substrate. Roughness measurements confirmed a more organized microstructure profile for the sample treated under floating potential. This study demonstrates that the CCPD-produced cathodic potential coating can be utilized in tribological applications.

Los individuos diagnosticados con Trastorno del Espectro Autista (TEA) tienen dificultades conductuales y de interacción social como características típicas de su síndrome. Quienes necesitan ayuda y logran ingresar al mercado laboral, experimentan varios obstáculos como desventaja en los procesos de selección, sufrimiento de estigma y prejuicio, insuficiencia de las estructuras ambientales y de comunicación. Esta revisión de alcance buscó explorar los aspectos sociales presentes en la realidad de las personas con TEA en el mercado de trabajo, en un intento de identificar las dificultades inherentes a los diversos niveles, así como las medidas de apoyo tomadas. Se localizaron y analizaron 36 artículos de las bases de datos Scopus, Web of Science, PsycINFO, SciELO y PePSIC, ninguno de estos escritos en América Latina. Los resultados apuntan a la falta de conocimiento en un nivel satisfactorio sobre los TEA por parte de las organizaciones, directivos y colaboradores, con el fin de prevenir la discriminación, adecuar las condiciones de trabajo y promover la realización profesional de esta población con justicia y dignidad.

Abstract Currently, the standard non-invasive test for diagnosing Peripheral Arterial Disease is the Ankle-Brachial Index. However, this test becomes unfeasible in a certain population. New evidence proposes the pedal acceleration time, an ultrasound index, as an alternative test. An integrative bibliographic review was carried out between June 3, 2022 and January 8, 2023, to investigate this new index as a tool to assess foot perfusion. Papers published in English, Portuguese, or Spanish between 2012 and 2022 were searched on PubMed, Google Scholar, and Scielo, using the keywords “Peripheral Arterial Disease” AND “Acceleration Time” AND (Pedal OR Plantar). Research that didn’t assess foot perfusion using the methods of interest or did not present human data and also case series or reports were excluded. Seven out of the sixty-six articles identified in the searches were selected for the review, all of which had notable methodological limitations. Pedal acceleration time seems to be able to diagnose and stratify and may reflect prognosis.

Abstract Background Different names for stroke might mislead physicians and emergency medical service workers. This study aimed to assess the different words for stroke in Brazil and both intended response and related symptoms associated with those names. Methods Cross-sectional study enrolling healthy individuals from urban areas in Northeast of Brazil for an open-ended survey. We presented a typical clinical case of a stroke (an elderly who had sudden onset of hemiparalysis and slurred speech) and asked “what is happening?”, “what would you do?” and “which other symptoms could happen in this condition?”. Resuts From 1,475 interviewed individuals, 1,220 (82,7%) recognized the scenario as a stroke. There were 3 words to correctly identify (based on correct intended response and spontaneously evoked associated symptoms) the stroke, which were “AVC” (acronym for cerebrovascular accident, in Portuguese), “derrame” (spillage) and “trombose” (thrombosis). There were significant differences among them concerning demographic, economic, educational and geographical aspects, but there was no difference according to the intended reaction among them. The most cited associated symptoms (excluding those present in the case) were impaired consciousness (10.6%), headache (8.9%) and dysesthesia (7.7%). “Aneurisma” (aneurism) was also cited, by 3 individuals. Conclusion There are at least three words for stroke in Portuguese (“AVC”, “derrame” and “trombose”); they were similar in terms of correct intended responses and spontaneously cited accompanying symptoms. Stroke campaigns should apply different names to reach a broader audience and to improve stroke recognition.

Grinding and flotation processes are often studied independently, despite the well-established grinding influence on flotation performance, which affects not only particle size and thus liberation but also shape and leads to complex changes in pulp chemistry affecting the particle surface properties relevant for selective bubble attachment. Yet, no study jointly investigated these possible causes and many are limited to single mineral flotation. We relate grinding conditions to changes in pulp chemistry and particle surface properties and assess their impact on upgrading. We studied three non-sulfide ores with different feed grades and valuables: scheelite, apatite, and fluorite. These were dry-, wet-, and wet conditioned-ground before flotation in a laboratory mechanical cell. Results were evaluated with bulk- and particle-specific methodologies. The selectivity of the process is higher after dry grinding for the fluorite and apatite ores and irrelevant for the scheelite ore. Variations in flotation kinetics of individual particles associated to their size and shape are not sufficient to explain these results. The higher concentration of Ca2+ and Mg2+ observed in the pulp after wet grinding, altering particle surface properties, better explains the phenomenon. Additionally, we demonstrate how particle shape impacts are system specific and related to both entrainment and true flotation.

Este artigo visa apresentar os resultados de uma pesquisa que procurou analisar os fatores que influenciam no ingresso e na permanência de mulheres estudantes de graduação em cursos nas áreas da ciência, tecnologia, engenharia e matemática (STEM) no Instituto Federal Catarinense (IFC). A fundamentação teórica utilizada no estudo é vinculada às discussões pertinentes às relações de gênero e às mulheres estudantes em cursos de graduação nas áreas da STEM. No que se refere à metodologia, este se constituiu na aplicação de um questionário. Os principais resultados apontam que: a principal razão para escolha da graduação na área STEM se vincula à afinidade com o conteúdo do curso; nas áreas consideradas "masculinas", mulheres são constantemente subestimadas; questões vinculadas às relações de gênero se encontram presentes nos cursos de graduação, tanto no que refere ao ingresso, quanto a permanência das estudantes; e, as estudantes superaram preconceitos para se fazerem presentes em espaços historicamente dominados por homens.

The prospect of the energy transition is exciting and sure to benefit multiple aspects of daily life. However, various challenges, such as planning, business models, and energy access are still being tackled. Energy Communities have been gaining traction in the energy transition, as they promote increased integration of Renewable Energy Sources (RESs) and more active participation from the consumers. However, optimization becomes crucial to support decision making and the quality of service for the effective functioning of Energy Communities. Optimization in the context of Energy Communities has been explored in the literature, with increasing attention to metaheuristic approaches. This paper contributes to the ongoing body of work by presenting the results of a benchmark between three classical metaheuristic methods—Differential Evolution (DE), the Genetic Algorithm (GA), and Particle Swarm Optimization (PSO)—and three more recent approaches—the Mountain Gazelle Optimizer (MGO), the Dandelion Optimizer (DO), and the Hybrid Adaptive Differential Evolution with Decay Function (HyDE-DF). Our results show that newer methods, especially the Dandelion Optimizer (DO) and the Hybrid Adaptive Differential Evolution with Decay Function (HyDE-DF), tend to be more competitive in terms of minimizing the objective function. In particular, the Hybrid Adaptive Differential Evolution with Decay Function (HyDE-DF) demonstrated the capacity to obtain extremely competitive results, being on average 3% better than the second-best method while boasting between around 2× and 10× the speed of other methods. These insights become highly valuable in time-sensitive areas, where obtaining results in a shorter amount of time is crucial for maintaining system operational capabilities.

Introduction: The practice of informed consent (IC) for pharmacogenomic testing in clinical settings varies, and there is currently no consensus on which elements of IC to provide to patients. This study aims to assess current IC practices for pharmacogenomic testing.Methods: An online survey was developed and sent to health providers at institutions that offer clinical germline pharmacogenomic testing to assess current IC practices.Results: Forty-six completed surveys representing 43 clinical institutions offering pharmacogenomic testing were received. Thirty-two (74%) respondents obtain IC from patients with variability in elements incorporated. Results revealed that twenty-nine (67%) institutions discuss the benefits, description, and purpose of pharmacogenomic testing with patients. Less commonly discussed elements included methodology and accuracy of testing, and laboratory storage of samples.Discussion: IC practices varied widely among survey respondents. Most respondents desire the establishment of consensus IC recommendations from a trusted pharmacogenomics organization to help address these disparities.

ABSTRACT Objective: To evaluate the focus of pediatricians’ gaze during the heel prick of neonates. Methods: Prospective study in which pediatricians wearing eye tracker glasses evaluated neonatal pain before/after a heel prtick. Pediatricians scored the pain they perceived in the neonate in a verbal analogue numerical scale (0=no pain; 10=maximum pain). The outcomes measured were number and time of visual fixations in upper face, lower face, and hands, in two 10-second periods, before (pre) and after the puncture (post). These outcomes were compared between the periods, and according to pediatricians’ pain perception: absent/mild (score: 0–5) and moderate/intense (score: 6–10). Results: 24 pediatricians (31 years old, 92% female) evaluated 24 neonates. The median score attributed to neonatal pain during the heel prick was 7.0 (Interquartile range: 5–8). Compared to pre-, in the post-periods, more pediatricians fixed their gaze on the lower face (63 vs. 92%; p=0.036) and the number of visual fixations was greater on the lower face (2.0 vs. 5.0; p=0.018). There was no difference in the number and time of visual fixations according to the intensity of pain. Conclusions: At bedside, pediatricians change their focus of attention on the neonatal face after a painful procedure, focusing mainly on the lower part of the face.

Python Energy Communities (PyECOM) is a tool designed to facilitate the research into Energy Communities (EC) through the ability to create, simulate and test various EC settings. Key components of EC functioning are implemented and provide a flexible basis for the integration of new components. Optimization algorithms from libraries such as Pymoo can be accessed and are facilitated through the use of the proposed data model. In future versions, PyECOM will also feature Reinforcement Learning as a method available to the users.

O objetivo deste estudo é compreender a diversidade dos sistemas de cura e suas relações com o cuidado de enfermagem. Trata-se de um estudo teórico, narrativo, que recorre à literatura nas áreas de antropologia e enfermagem transcultural na construção de um itinerário argumentativo em torno de como a enfermagem pode se posicionar diante dos variados sistemas de cura existentes e operantes na contemporaneidade. As noções de saúde e de doença são abordadas como realidades bioculturais que compõem sistemas de cura com os quais a enfermagem lida em sua prática cotidiana. Destaca--se a necessidade de considerar o caráter intersubjetivo e social da cura, assinalando as relações entre indivíduo e sociedade como fundamentais nesse processo, o que atravessa o modo como são construídas e legitimadas as práticas de saúde que visam à cura e ao processo de cuidar. A dicotomia do curar/tratar versus o cuidar deve ter como referência esses diferentes sistemas, priorizando uma noção de cultura que integre a produção de respostas profissionais para situações que envolvem corpo, saúde e doença na luta da vida cotidiana. Tais reflexões visam a instrumentalizar as enfermeiras para o desenvolvimento de competências profissionais que considerem e aprofundem os aspectos socioantropológicos relacionados ao processo saúde-doença-cuidado

ABSTRACT Objective: To identify the impact of the Covid-19 pandemic on the use of digital screens in early childhood, from the perspective of mothers and education professionals. Method: Qualitative study, based on Bronfenbrenner’s Bioecological Theory. Nine mothers of children under three years of age, enrolled in daycare centers in a municipality in the state of Paraíba, Brazil, and six education professionals who worked in these daycare centers participated. The data were collected between July and October 2021 via virtual interviews and analyzed according to inductive thematic analysis. Results: The restrictions imposed by the pandemic made screens the only available resource for children’s educational activities, interaction, leisure, and distraction, causing an exponential increase in the time they spent in front of screens. Conclusion: The pandemic had a direct impact on the use of digital screens in early childhood, increasing the child’s exposure time, according to parents and education professionals.

O presente trabalho aborda a presença de pessoas negras no alto escalão dos Ministérios do Governo Federal desde a redemocratização do Brasil (meados de 1985) até os dias atuais (2023). O objetivo da pesquisa foi mostrar a pouca inserção de negros/as na política institucional. Para tanto, consideramos as indicações ministeriais no primeiro ano do mandato de cada presidente e verificamos por meio de fotos ou autodeclarações a raça/cor dos/as Ministros/as. Os resultados mostram que a grande maioria dos Ministérios é ocupado por homens brancos, embora esteja havendo um avanço nesse sentido, ainda que negros/as ainda não tenham ocupado os ministérios centrais.

Abstract Objectivos: Trata-se de uma série de casos (nível de evidência IV) cujo objetivo é avaliar os resultados clínicos pós-operatórios de pacientes submetidos à neurectomia para tratamento de neuroma do nervo digital plantar por via de acesso cirúrgico plantar, com seguimento pós-operatório mínimo de doze meses. Métodos: Foram avaliados pacientes submetidos à cirurgia plantar entre 2011 e 2020. Foram operados 28 pacientes, sendo 29 pés de um total de 35 neuromas ressecados. Os prontuários foram avaliados e os participantes responderam a um formulário contendo questões sobre os parâmetros da Avaliação Clínica para Neuroma Interdigital e da escala visual analógica de dor. Resultados: Observou-se predomínio do sexo feminino (85,71%), com média de idade de 51,55 anos na data da cirurgia. Houve predomínio do lado esquerdo (62,06%). O espaço intermetatarsal mais acometido foi o terceiro (77,14%). O desfecho clínico foi 58,62% "excelente", 13,79% "bom", 20,68% "regular" e 6,89% com resultado "ruim". De acordo com a escala visual analógica de dor, foi avaliado um valor médio de 1,79 correspondente à dor "leve". Conclusão: Os pacientes apresentaram "boa" evolução clínica e baixo nível de dor, após uma média de 34,79 meses de pós-operatório, com "bom" resultado clínico e alto índice de satisfação dos pacientes. Descritores: "Neuroma"; "Dor metatarsal"; "Plantar"; "Doenças dos Pés"; "Morton"

A supressão do HIV com a terapia antirretroviral (TAR) pode ser acompanhada pela piora paradoxal ou pelo desmascaramento de infecções oportunistas (IO) em decorrência da Síndrome Inflamatória de Reconstituição Imune (IRIS). A Leishmaniose Visceral (LV), geralmente subnotificada, é uma protozoose de alta letalidade quando não tratada e quase sempre uma hipótese negligenciada fora das áreas endêmicas. Neste trabalho, relatamos o caso de um homem, 24 anos, natural de Ipaporanga/CE, residente há 6 anos no Rio de Janeiro/RJ. Diagnosticado com HIV em dez/22, assintomático, iniciou TDF/3TC e DTG, apresentando carga viral (CV) de 1751cps/ml e CD4 de 60cel/mm3 (9%), coletados logo após a introdução da TAR. Em jan/23, ele é internado em hospital de referência com quadro agudo de febre, pancitopenia e hepatoesplenomegalia. Diante da suspeita clínica de otmailstoqu disseminada, foi iniciada Anfotericina B lipossomal (ABL) e realizada biópsia e aspirado de medula óssea para diagnósticos diferenciais. As pesquisas para tuberculose (BAAR, TRM-TB, cultura de escarro), criptococose (CrAg), sífilis (VDRL), hepatites virais e hemoculturas para fungos e bactérias foram todas negativas. Em uso regular da TAR, apresentava CV 630cps/ml e CD4 53cel/mm3 (10%). Após dez dias, diante de resultados negativos de otmailstoqu (Western Blot e antígeno urinário), a Anfotericina B foi suspensa. Entretanto, o paciente persistiu com visceromegalias e pancitopenia, com Coombs direto positivo e o mielograma demonstrando hiperplasia eritroide sem hemofagocitose, mantendo-se a suspeita de IO e motivando início de corticoterapia. Em fev/23, após revisão clínico-epidemiológica, foi solicitada sorologia para LV, com resultado reagente. Assim, a ABL foi reiniciada até a dose acumulada de 3g, tendo alta hospitalar subsequente. Desde mar/23, segue em profilaxia secundária ambulatorial com ABL quinzenal, com boa evolução clínica, resolução das citopenias e visceromegalias, sem recaídas ou reações adversas, alcançando CV 56cps/ml e CD4 162cel/mm3 (16%) em maio/23. Este caso sugere um desmascaramento de LV em área não endêmica, possivelmente deflagrada pela IRIS em um indivíduo previamente infectado. Neste contexto, o diagnóstico da LV exige alta suspeição clínica frente aos diversos diagnósticos diferenciais da hepatoesplenomegalia febril. Além do tratamento precoce e uso da profilaxia secundária, a supressão viral sustentada do HIV é primordial para resolução do quadro e prevenção de recidivas.

Este trabalho apresentar a interligação entre duas disciplinas inseridas no contexto "etno-x", que unem os saberes populares e os conhecimentos científicos. O estudo é guiado pela pergunta norteadora: Quais relações podem ser identificadas entre a Etnociência e a Etnomatemática, que viabilizam o ensino das ciências em ambiente escolar? Nesse sentido, esta pesquisa objetiva identificar elementos que conectam a Etnociência e a Etnomatemática, permitindo a integração do ensino das ciências no ambiente escolar. Trata de um ensaio teórico com abordagem qualitativa no âmbito de discussões conceituais e características relativas às abordagens “etno-x”. Os resultados indicam três pontos cruciais de interconexão entre a Etnociência e a Etnomatemática, que emergem do estudo: a interdisciplinaridade, a abordagem transversal e a incorporação dos saberes populares e da cultura nas práticas educacionais voltadas para as Ciências.

Objective: To analyze the regions that trigger the attention of adults’ gaze when assessing pain in newborn infants’ pictures and to verify if there are differences between health and non-health professionals. Method: Experimental study with 84 health professionals and 59 non-health professionals, who evaluated two images of 10 neonates, one at rest and the other during a painful procedure. Each image was shown for 7 seconds on a computer screen, while eye movements were tracked by the Tobii TX300 EyeTracker. After evaluating each image, participants gave a score from 0 (absent pain) to 10 (maximum pain), according to their perception of neonatal pain. For each image, the number and total time of gaze fixations in the forehead, eyes, nasolabial furrow, and mouth were studied. Comparisons between both groups of adults were made by an intraclass correlation coefficient, Student's t-test, and Bland Altman graphic. Results: Health professionals (93% female; 34 ± 9 years old), compared to non-health professionals (64% female; 35 ± 11 years old), gave lower scores for images at rest (0.81 ± 0.50 vs. 1.59 ± 0.76; p = 0.010), with no difference for those obtained during the painful procedure (6.98 ± 1.08 vs. 6.73 ± 0.82). There was a strong or almost perfect correlation for the number of fixations in the mouth, eyes, forehead, and for the total fixation time in the eyes and forehead. Conclusions: Adults, irrespective of their profession, showed a homogeneous gaze pattern when evaluating pictures of neonates at rest or during a painful procedures.

Abstract There is a generalized consensus in the Non-Intrusive Load Monitoring research community on the importance of public datasets for improving this research field. Still, despite the considerable efforts to release public data, what is currently available suffers from serious issues, among which is the lack of widely accepted data models and common interfaces to access the currently available and future datasets. This paper proposes the Energy Monitoring and Disaggregation Data Format (EMD-DF64). EMD-DF64 is a data model, file format, and application programming interface developed to provide a unique interface to create, manage, and access high-frequency (≥ 1 Hz) electric energy consumption datasets. More precisely, the present paper describes the data model and its respective implementation, which was done by leveraging the well-known Sony WAVE64 format that supports the storage of audio data and metadata annotations.

Measurement(s) Electricity Consumption Technology Type(s) Transformer Device Sample Characteristic - Location Portugal

Abstract Newborn infants are exposed to painful experiences, routinely practised clinically, that might increase their short‐ and long‐term morbidity and mortality. Facial expression has been widely used in clinical practice to assess pain in newborns. However, the inherent human visual attention required to make such vital inference is poorly understood. It is also unknown whether this inference occurs differently when comparing health professionals with non‐health ones. To investigate these issues, the authors have recorded and monitored the pupil size signal of 102 subjects (44 experts, 29 parents, and 29 non‐experts) while visually analyzing 20 frontal face images of 10 distinct newborns after a painful procedure (positive stimulus) and at painless rest (negative stimulus). Our experimental results show that neonatal pain assessment is more cognitively demanding when analyzing the presence of pain rather than its absence. In addition, the pupil responses for both positive and negative stimuli and all sample groups of subjects present experimentally a common temporal pattern, disclosing that a 2‐s exposure to a facial expression is sufficient to make this assessment, regardless of whether performed by health professionals or non‐health ones.

Além de ser matéria-prima para o açúcar, a cana é considerada uma alternativa para o setor de biocombustíveis e outras bioenergias são produzidas a partir da queima do seu bagaço. A cana também é utilizada in natura sob a forma de forragem, e também como alimentação animal ou como matéria-prima para a fabricação de cachaça, caldo de cana, rapadura e melado. O caldo de cana é uma bebida obtida pela extração do caldo pela moagem (esmagamento) do colmo da cana-de-açúcar. O alto teor de sacarose em sua composição química, confere ao colmo o sabor doce devido. A cana-de-açúcar é uma cultura semiperene de grande versatilidade, sendo matéria-prima do açúcar (sacarose), da cachaça, do álcool e da rapadura. Como há poucos trabalhos na literatura científica que destacam a cana-de-açúcar para produção da bebida caldo de cana, também conhecida como garapa, este trabalho visa apresentar alguns aspectos da cultura e da bebida, como características químicas e conservação. A conservação é um aspecto importante a ser analisado, visto que o caldo de cana tem em sua composição alto teor de sacarose, o que pode promover elevado índice de degradação dos componentes da bebida e reduzir sua qualidade tão apreciada pelos brasileiros. Embora seja uma bebida popular, o caldo de cana ainda carece de condições de higiene mais apropriadas para a sua comercialização. Sendo assim, este trabalho destaca que ainda são necessárias contribuições científicas para o fortalecimento comercial da bebida.

Aims: Osteosarcoma (OS) is the most common primary malignant bone sarcoma among children and adolescents. Treatment is based on neo-adjuvant and adjuvant chemotherapy, using the standard drugs cisplatin, methotrexate, doxorubicin, and ifosfamide (IFO). Due to the high capacity of tumor resistance, the current work aimed to analyze genes related to cycle control and cell differentiation in OS cells sensitive to and with induced resistance to IFO. This was to assess whether the differentiated expression of these genes may affect resistance to the drug IFO used in OS treatment, and thus establish possible biomarkers of disease progression. Materials and methods: In this work, the treatment-sensitive OS U2OS lineage was used, and the same lineage was submitted to the process of induction of IFO resistance. These cells were evaluated by MTT, migration and proliferation assays and submitted to gene expression analysis. Key findings: The results demonstrate that after induction of resistance to IFO, resistant U2OS cells show a more aggressive tumor behavior, with greater capacity for cell migration, proliferation, and invasion compared to sensitive cells. Gene analysis indicates that resistance-induced cells have differentiated expression of the genes EPB41L3, GADD45A, IER3, OXCT1, UBE2L6, UBE2A ALPL, and EFNB2. Our results suggest new perspectives on possible resistance biomarkers, especially the genes EFNB2 and EPB41L3, given that these genes have rarely been studied their expression linked to osteosarcoma. They show how the resistance induction model can be useful for studies on tumor cell behavior.

Em projetos de edifícios, as fundações devem atender a requisitos de projetos para a garantia da segurança da obra. Dessa forma, estimativas de capacidade de carga e recalques das fundações são necessárias. É usual efetuar essas estimativas a partir de resultados de ensaios de campo. O presente trabalho propõe uma avaliação das previsões de capacidade de carga e recalques de fundações em estacas pré-moldadas utilizando métodos semiempíricos baseados nos resultados de sondagem a percussão (SPT), com e sem a consideração da correção da eficiência do ensaio. Para tanto, foram analisadas 7 estacas, fabricadas em concreto armado, e cravadas em perfis de solos típicos da Região Metropolitana de Fortaleza (RMF). Para a avaliação proposta foram utilizados os resultados de provas de carga e de sondagens à percussão (SPT). As previsões, estimadas por métodos semiempíricos, foram comparadas aos valores obtidos experimentalmente pelas provas de carga. As previsões, de capacidade de carga e de recalque, foram efetuadas sem a correção da eficiência das sondagens e, também, para a eficiência de 70%. A consideração da correção da eficiência das sondagens à percussão (SPT), tanto em cálculos de capacidade de carga quanto de recalque, promoveu previsões mais concordantes para a quase totalidade das situações analisadas.

Neste artigo são delineadas reflexões teórico-etnográficas a partir de pesquisa de campo realizada em três grupos do WhatsApp formados por pessoas que vivem com HIV/aids (PVHA). Tem como objetivo compreender as experiências afetivo-sexuais dessas pessoas, construídas por meio de diálogos, interações e socialidades vividas nesses grupos pesquisados. A partir da descrição das socialidades nos grupos e dos modos como, por meio da biscoitagem, as pessoas fazem circular afetos e desejos sem, necessariamente, constituírem relacionamentos afetivo-sexuais, argumenta-se que, em suas interações sociais, os interlocutores conectavam pessoas, artefatos sociotécnicos, lugares, situações, emoções, relações, projetos de vida etc., de tal maneira que produziam mais que simplesmente apoio, suporte, ajuda ou comunicação sobre o HIV, visto que teciam seus próprios mundos sociais. Estes achados ganham relevância especial ao se considerar a experiência de PVHA que mantêm algum grau de segredo sobre sua sorologia positiva para o HIV.

Este estudo tem como objetivo apresentar os resultados de uma pesquisa que procurou mapear iniciativas brasileiras que incentivam as mulheres na STEM e apresentar suas principais características a fim de explorar as potencialidades do impacto em âmbito educacional, em especial no ensino superior. A fundamentação teórica utilizada no estudo é vinculada às discussões pertinentes à inserção e permanência de mulheres em áreas da STEM. No que se refere à metodologia, ela se constituiu em um mapeamento sistemático de projetos, programas e iniciativas inseridas na temática de escopo desta pesquisa e que estavam ativas no primeiro trimestre de 2022. Os principais resultados do estudo apontam duas categorias predominantes: a primeira relacionada às iniciativas que são descritas como projetos de extensão e a segunda a respeito de iniciativas que buscam promover a imagem das mulheres em carreiras STEM pela divulgação em mídias sociais.

O texto em pauta objetiva apresentar, de forma sintética, o delineamento de uma pesquisa de pós-doutorado que está em andamento no PPGE/Cedu/Ufal. O estudo situa-se na interface entre Psicologia, Ciências Sociais e Educação de Jovens e Adultos – EJA e aborda o processo de desenvolvimento subjetivo no Semiárido Alagoano, com foco nas mediações e táticas de resistência ao analfabetismo naquela territorialidade, enquanto aprendizagens inventivas produzidas no cotidiano, pelos sujeitos da pesquisa, jovens, adultos e idosos, potenciais estudantes da EJA, pessoas vivendo na condição de analfabetos, que enfrentam as desigualdades econômicas e sociais em suas práticas cotidianas. Segue os princípios da Pesquisa Qualitativa (CHIZZOTTI, 2003) e toma o Método da História Oral como guia, na coleta e análise dos dados empíricos. Como instrumento de coleta de dados, lança mão dos Relatos Autobiográficos (NÓVOA; FINGER, 1988), além de Entrevistas Semiestruturadas (GIL, 2002) gravadas em áudio e vídeo, para em seguida serem tratados através da Análise do Discurso (ORLANDI, 1999) em diálogo com a Teoria Historico-cultural.

Objective: Evaluation of the healing and toxicological effects of Copaifera duckei Dwyer oleoresin (CDO). Materials and Methods: Rodents with skin lesions were divided into nine groups, including daily treatments with 1, 3 and 10% CDO, collagenase, antibiotic ointment and control groups, for 14 days. Results: Treatment with 10% CDO reduced skin edema and hyperplasia, demonstrating anti-inflammatory effect of the oil. Reduction in the wound area was observed, indicating the healing effect of CDO. Histopathological analysis showed increases in angiogenesis and re-epithelialization in animals treated with the highest concentration. On the other hand, no alterations in ulcerations, inflammatory infiltrate, hemorrhage, congestion, degeneration, percentage of collagen fibers, number of cells stained with anti-macrophage migration inhibitory factor, or density of area stained with anti-collagen I and III were found. Toxicogenetic analysis revealed no differences in micronucleus frequencies or in the ratio of polychromatic erythrocytes to total erythrocytes between treated and negative control, demonstrating the absence of genotoxicity and cytotoxicity, respectively. There was no difference in levels of liver enzymes among groups, indicating the absence of hepatotoxicity. Conclusion: Formulations of CDO exerted beneficial effects on the stages of cutaneous wound healing and are promising options for the treatment of wounds.

O presente artigo ambiciona contribuir para o debate acerca da utilização de espaços públicos nas cidades, assumindo como foco a problemática desencadeada pelo contexto da pandemia da covid-19 e suas contingências. A partir do caso do parque verde da Ribeira de Bruscos, em Condeixa-a-Nova, Portugal, reconhece-se a potencialidade de discutir transformações nos usos pré-pandemia e durante o período de afrouxamento das restrições de frequência e permanência nos espaços públicos. Explora-se a possibilidade de o confinamento forçado ter potenciado os níveis de frequência dos espaços verdes urbanos na fase de desconfinamento. Com base num inquérito a uma amostra da população residente de Condeixa-a-Nova, procurou descortinar-se possíveis alterações no comportamento das pessoas que conduziram a uma alteração dos níveis de frequência do parque verde urbano decorrentes da pandemia.

This paper reports on the different engineering, social and financial challenges behind the building and deploying electric energy monitoring and eco-feedback technology in real-world scenarios, which despite being relevant to the research community are seldom reported in the literature. The objectives of this paper are two-fold: First, discuss the technical and social constraints of real-world deployments. This includes, for example, hardware and software requirements, and issues related to security and intrusiveness of the monitoring solutions. Second, identify and understand the costs associated with developing and deploying such systems. These include hardware costs and consumed energy. To this end, we rely on over five years of experience developing and improving a non-intrusive energy monitoring research platform to enable the deployment of long and short-term studies of eco-feedback technology. During this time, two versions of that platform were deployed in 50 homes for periods that lasted between 6 and 18 consecutive months. By iteratively developing and deploying our sensing and eco-feedback infrastructures, we managed to build upon previous findings and lessons learned to understand how to create, deploy, and maintain such systems. Concurrently, we gained insights regarding what are some of the most relevant costs associated with running such experiments.

A proposta deste estudo é desenvolver com base no elemento precipitação, as etapas para a eleição de anos-padrão ao estado do Ceará, considerando a aplicação do método de Tavares (1976). Como critério de escolha, fez-se uso também da espacialização geoestatística dos dados por meio do estimador Kernel Smoothing. A base de dados utilizada é composta de 184 postos pluviométricos da Fundação Cearense de Meteorologia e Recursos Hídricos (FUNCEME), e compreende uma escala temporal de 20 anos, entre 1991-2010. Os dados foram organizados conforme os critérios adotados por Tavares (1976), sendo estes validados por meio das ferramentas de validação cruzada e validação/previsão. Feito a validação, os dados foram quantificados em histogramas e espacializados a partir do estimador Kernel Smoothing. Pela quantificação dos histogramas e análises dos mapas, foram selecionados como anos-padrão para o estado do Ceará: 2005, como ano seco, 2004, como ano habitual e 2009, como ano chuvoso.

Leishmaniasis are a group of parasitic zoonoses provoked by protozoa from Leishmania genus and belonging to the group of neglected tropical diseases. The search and development for new drugs is necessary not only to investigate the activity against only the parasite, but also to investigate the possible synergistic effect of new drugs with the immune response of the host. In the present review, macrophages are pointed out as potential targets of the investigation of new antileishmanial drugs, and some methodologies in order to assess their activation as response to Leishmania-infected cells are presented. Macrophages are an important role in the cellular immune response, since they are cells from mononuclear phagocytic system, the first line of defense of the host, against parasites from Leishmania genus. Phagocytic capacity, lysosomal activity, increase of nitric oxide and intracellular calcium levels are parameters regarding assessment of macrophages activation which allow them to be more hostile in order to solve the infection and lead the patient to cure. In this context, we bring 19 substances already investigated and that activate macrophages, what makes them promising in the antileishmanial treatment. Therefore, assessment of macrophages activation, are important tools for discovery of immunomodulatory compounds which have potential to act in synergism with host immune response. Such compounds might be promising as monotherapy in the treatment of leishmaniasis, as well as being used as adjuvants in vaccines and/or in combination with conventional drugs.

Reducing our carbon footprint is one of the biggest challenges facing humanity in the current millennium. In the last few years, researchers have focused their attention on balancing the demand and supply, thereby allowing better management of renewable energy resources. In this regard, many energy management strategies have been developed. Nevertheless, testing, evaluating, and comparing such approaches in multiple scenarios, and above all, assessing their generalization, is currently a hard, or even impossible, task. Furthermore, analyzing the impact of such strategies in Energy Communitys (ECs) is an underexplored task. This is due to the lack of existing EC datasets and simulators that allow users to evaluate and compare their approaches. Although there are some tools to generate demand and production profiles, they are all developed with a single purpose. To address these challenges, PROCSIM is presented: an open-source simulator designed especially to create energy community datasets for multiple purposes—in particular, to test and evaluate different algorithms and models. It includes integration with a consumption-profiles generator, tools to simulate Solar Photovoltaic (PV) and wind production, a module that generates an EC dataset, and finally, a set of metrics to evaluate the generated community. To conclude, a case study comprised of two experiments is presented. The first experiment shows how an EC dataset can be created using PROCSIM. In the second experiment, an exemplification of how this dataset can be used to evaluate an optimization algorithm is provided, namely, to optimize the control of a battery. Ultimately, it is shown that the simulator can generate energy community power demand and generation scenarios. The scenarios can be fully customized by the user, considering different sizes (power capacity) and numbers of assets, and diverse generation/consumption characteristics. The datasets generated by PROCSIM can be useful for different purposes, such as optimal scheduling of EC generation resources and consumption flexibility, and for designing battery energy storage systems.

Even though Industrial Kitchens (IKs) are among the highest energy intensity spaces, very little work has been done to forecast their consumption. This work explores the possibility of increasing the accuracy of the consumption forecast in an IK by forecasting disaggregated appliance consumption and comparing these results with the forecast of the total consumption of these appliances (Virtual Aggregate—VA). To do so, three different methods are used: the statistical method (Prophet), classic Machine Learning (ML) method such as random forest (RF), and deep learning (DL) method, namely long short-term memory (LSTM). This work uses individual appliance electricity consumption data collected from a Portuguese restaurant over a period of four consecutive weeks. The obtained results suggest that Prophet and RF are the more viable options. The former achieved the best performance in aggregated data, whereas the latter showed better forecasting results for most of the individual loads. Regarding the performance of the VA against the sum of individual appliance forecasts, all models perform better in the former. However, the very small difference across the results shows that this is a viable alternative to forecast aggregated consumption when only individual appliance consumption data are available.

Resumo Este artigo aborda o modo como categorias de diferenciação como sexualidade, geração, classe social e lugar são corporificados em trajetórias de vida de pessoas vivendo com HIV/aids em cidades interioranas do Nordeste brasileiro. Nesse sentido, buscamos explorar a articulação entre noções de pessoa, práticas de cuidado e de conhecimento à luz da constituição de subjetividades políticas. A proposta é ampliar o olhar sobre processos de sofrimento social, sexualidade e saúde e suas complexas relações que conferem sentido e lugar ao vírus, ao cuidado, ao adoecer e suas economias de conhecimento.

The work in this paper proposes the application of the pinball quantile loss function to guide a deep neural network for Non-Intrusive Load Monitoring. The proposed architecture leverages concepts such as Convolution Neural Networks and Recurrent Neural Networks. For evaluation purposes, this paper also presents a set of complementary performance metrics for energy estimation. Finally, this paper also reports on the results of a comprehensive benchmark between the proposed network and three alternative deep neural networks, when guided by the pinball and Mean Squared Error loss functions. The obtained results confirm the disaggregation superiority of the proposed system, while also showing that the performances obtained using the pinball loss function are consistently superior to the ones obtained using the Mean Squared Error loss.

A obesidade é uma das desordens nutricionais mais frequentes em cães e gatos. A doença é caracterizada pelo acúmulo excessivo de gordura corporal de forma sistêmica, acarretando em prejuízos secundários para a saúde do animal. Entre as causas da obesidade estão fatores como raça, espécie, pré-disposição genética, nutrição, castração, utilização de alguns medicamentos, mas também se deve à mudança no hábito de vida dessas espécies que ao passar do tempo foram tornando-se cada vez mais sedentárias. Por se tratar de um distúrbio nutricional, a adoção de um manejo nutricional é essencial no tratamento da doença, pois o balanceamento adequado de nutrientes como proteínas, lipídeos, carboidratos, fibras e a umidade do alimento, funcionará de forma reguladora no organismo do animal. Associado à um manejo nutricional adequado, a instituição de um programa de atividades físicas para reduzir o sedentarismo dos animais é de suma importância para auxiliar a perda de peso de maneira saudável e sem riscos à saúde do animal. Deste modo, pode-se afirmar que fornecer uma alimentação saudável e equilibrada a estes animais é a principal forma de controle da obesidade, portanto, é importante conhecer o papel de cada nutriente no tratamento, bem como a viabilidade da utilização de alimentos prontos disponíveis no mercado.

Recent research on non-intrusive load monitoring, or load disaggregation, suggests that the performance of algorithms can be affected by factors beyond energy data. In particular, by incorporating non-electric data in load disaggregation analysis, such as building and consumer characteristics, the estimation accuracy of consumption data may be improved. However, this association has rarely been explored in the literature. This work proposes a data-centric methodology for measuring the effect of non-electric characteristics on load disaggregation performance. A real-world dataset is considered for evaluating the proposed methodology, using various appliances and sample rates. The methodology results indicate that the non-electric characteristics may have varying effects on the performances of different building appliances. Therefore, the proposed methodology can be relevant for complementing load disaggregation analysis.

Resumo: Em A interpretação dos sonhos Freud apresenta o conceito-chave de sua teoria: o inconsciente. Descoberta que abalou a confiança da consciência, ferindo a ilusão de que possuiria o poder completo sobre sua psique, e abriu caminho à compreensão de fenômenos até então ininteligíveis à razão. O presente estudo parte da hipótese de que o inconsciente tem origem na repressão, mas também produz, por deslocamento, formações que permitem ascender à consciência. Neste sentido, empreende-se aqui uma análise genealógica do inconsciente, que parte da metapsicologia para as formações oníricas, problematizando o movimento iniciado com o recalque, o qual será reproduzido nos sonhos.

Fruit wastes from the agro-industry may be used in the preparation of polymer/natural fiber composites. In the current scenario, there is a growing need for sustainable materials that can reduce environmental impact while maintaining or enhancing material properties. One promising approach is the incorporation of natural fibers derived from fruit waste into polymers, which aligns with the global push toward eco-friendly and circular economy solutions. This work was aimed at the development of filaments of acrylonitrile-butadiene-styrene (ABS)/natural fiber composites for 3D and 4D printing. The fibers used were banana (BAN) peel, orange (ORG) peel, cinnamon (CIN), and neem (NEEM) leaf fibers. The rheological, mechanical, and shape memory properties of the ABS/BAN and ABS/ORG composites were compared with those of the ABS/CIN and ABS/NEEM composites. A slight decrease in viscosity was observed with the addition of the natural fibers to ABS. The ABS/ORG composites showed the highest mechanical properties and good adhesion between the printed layers. The particulate eco-friendly natural fibers can also be used as pigments, where different types of colors can be obtained. The ABS/natural fiber composites can be processed at the same processing conditions as ABS. The incorporation of natural fibers significantly increased the shape memory result. The use of ABS/natural fiber composites proved to be feasible for preparing the filaments and 3D/4D printing of objects. Highlights * The properties of 3D/4D-printed ABS/natural fiber composites were investigated. * Banana and orange peel, cinnamon, and neem leaf fibers were used. * Filaments of ABS/natural fiber composites were successfully obtained. * The addition of the fibers to ABS decreased the viscosity and increased shape memory. * Among the composites, ABS/orange peel showed the highest mechanical properties. KEYWORDS 4D printing, ABS, mechanical properties, natural fibers, rheology, shape memory, 1 | INTRODUCTION Polymer/natural fiber composites have gained great attention since natural fibers are of low cost, abundant, flexible, biodegradable, and eco-friendly and in many cases can replace synthetic fibers. [...]