Abstract A novel p(THFA-co-HEMA) membrane based on acrylate CP was herein successfully synthesized through PP technique, and applied as a membrane for Pb ion-selective electrode (Pb-ISE). Optimal composition of THFA was HEMA 9:1 (TH91), with a Tg of -6.5oC. The structure of p(THFA-co-HEMA) was characterized using FTIR. Pb-ISE sensor showed remarkable calibration measurement in the range from 0.1 to 10-6 M, with a LOD of 7.59 x 10-7 M, and it obeyed Nernstian number of 30.5 mV/dec. In addition, fabricated Pb-ISE sensors showed fairly good selectivity coefficients for several types of ions, such as K+ (-6.53 ± 0.11), Na+ (-6.35 ± 0.16), NH4 + (- 6.76 ± 0.11), Mg2+ (-12.15 ± 0.13), Ca2+(12.12 ± 0.14), Cu2+ (-4.33 ± 0.11) and Cd2+ (-6.43 ± 0.17), and effective function in the pH range from 3 to 8. The resulting response time was quite good, 6.7 sec, with a change of 27.5 mV for decade. Pb-ISE sensor also showed validation results equivalent to AAS standard method, where corresponding data with real samples produced values of 9.3 ± 1.9 and 9.2 ± 2.0 ppm and 275.5 ± 10.3 and 277.7 ± 4.0 g/g for CREW and CRMS, respectively.

Klipspruit Colliery is experiencing coal losses, which leads to a negative impact on coal production and subsequently loss in revenue. This study aimed to identify the possible causes of coal losses in the No. 4 upper and lower seams. The objectives were to identify potential sources of coal losses through a literature survey, to identify areas where the coal losses occurred, to determine factors affecting coal losses, and to identify the most cost-effective methods to reduce coal losses. Highwall losses, top-of-coal losses, and coal edge losses were identified as the major areas of coal loss at Klipspruit. These losses were mostly attributed to the drilling and blasting practises of the pre-split, interburden waste, and the coal seams. Recommendations include re-visiting the current pre-split design and the tolerances adopted for the interburden and coal seam drilling and blasting design. It is furthermore recommended that Klipspruit implement a continuous improvement plan for the drilling and blasting and refresher training for the blasting crew and operators.

Resumen: El artículo presenta un estudio de caso, construido como tal a partir de una investigación de archivo. El caso se aborda a partir del análisis microtextual y desde la articulación de perspectivas teórico-metodológicas provenientes de la historia del libro, de las materialidades y de las textualidades. Se busca comprender mejor la circulación de textos literarios en un contexto específico, integrando al libro, sus protocolos de escritura y el horizonte de proyectos autoriales y legitimaciones que supone, en la densa y profusa red de las publicaciones de prensa, en un momento de intensas transformaciones en el campo literario argentino, en el contexto de las primeras vanguardias. Para ello, se presentan dos textos muy poco conocidos de un martinfierrista igualmente poco estudiado: Sergio Piñero (h.). El primero consiste en una serie de crónicas sobre un viaje a las islas Orcadas del Sur, publicadas sin firma en el vespertino La Razón entre mayo y junio de 1924, bajo el título Navegando en el Guardia Nacional (Diario de un tripulante). El segundo es un libro que aborda el mismo asunto, publicado por editorial Proa a fines de 1925, titulado El puñal de Orión. Apuntes de viaje, en el que la firma aparece como uno de los rasgos de inscripción del nombre de autor en un proyecto literario de ambición vanguardista. El estudio contrastivo de ambos textos sugiere la importancia de atender a la mediación del periódico y del libro, pero también a las relaciones e intercambios entre ambas, para comprender mejor la especificidad de las prácticas escriturarias que proponen, las redes culturales e intelectuales que trazan y los modos en que desafían y amplían la noción de literatura más allá del libro-centrismo.

Abstract: This article presents a case study constructed from archival research. It delves into the case through microtextual analysis, drawing on theoretical and methodological perspectives from the history of books, materiality, and textual elements. The aim is to gain a deeper understanding of the circulation of literary texts within a specific context. This approach integrates the book, its writing protocols, and the broader horizon of authorial projects and legitimations within the intricate and prolific realm of press publications. This investigation focuses on a period of significant transformation in the Argentine literary field, set against the backdrop of the early avant-garde movements. To achieve this, we introduce two lesser-known texts by a Martinfierrista figure, Sergio Piñero (h.). The first comprises a series of chronicles on a journey to Orcadas del Sur Islands, anonymously published in the evening argentine newspaper La Razón between May and June 1924 and titled “Navegando en el Guardia Nacional (Diario de un tripulante)” (“Navigating on the Guardia Nacional (Journal of a Crew Member)”. The second is a book that explores the same subject, published by Editorial Proa at the end of 1925, titled El puñal de Orión. Apuntes de viaje (Orion Dagger. Travel Notes). Here, the author´s name becomes a definig element within an avant-garde literary project. The comparative analysis of these two texts underscores the significance of considering the interplay between newspapers and books, as well as the relationships and exchanges between them. This approach helps us better understand the unique characteristics of the writing practices they represent, the cultural and intellectual networks they establish, and how they challenge and expand the concept of literature beyond a book-centric perspective.

ABSTRACT The research relevance is predefined by the air travel number growth. Accordingly, the relevance of this issue is increasing, especially concerning air travel safety. Also, due to the increasing demand for international flights, it becomes essential to harmonize the standards and methodology of training aviation personnel. The research aims to consider the parameters of flight safety and the impact of the unification of training programs for aviation personnel. The conclusion that unification can significantly affect safety was made with the help of scientific and special methods, including analysis, synthesis, concretization, and generalization. An analysis of existing unification methods was conducted. The multi-crew pilot training program proved to be one of the most advanced compared to standard flight crew training programs. The method was determined to be a specialized training program tailored to the needs of the aviation industry and focused on training pilots for multi-crew and jet operations. The program is more challenging, intensive and dynamic, and includes a significant amount of simulator training. Traditional flight training programs, such as Private Pilot Licenses (PPL), Commercial Pilot Licenses (CPL), instrument qualification, and multi-engine rating, have a broader scope and provide pilots with more career opportunities. Simulator training has been identified as a critical component of many flight training programs and plays a vital role in flight safety. The study may be of interest to a range of readers concerned with the issue of standardizing aviation training and improving safety in aviation, including researchers, faculty, and students of higher education institutions in the aviation field. growth Accordingly Also flights personnel synthesis concretization generalization conducted multicrew multi operations challenging dynamic PPL, PPL , (PPL) CPL, CPL (CPL) qualification multiengine engine rating opportunities researchers faculty field (PPL (CPL

ABSTRACT With a growing population, the construction sector is continually expanding due to societal demands. Hence, this research focused on implementing Lean Construction methodology in an urban pavement project. This non-experimental methodology relies on field data collection for measurements during specific timelines, leading to quantifiable results for analysis. Prior to implementing this methodology, the project experienced delays. However, with the application of Lean Construction methodology and its tools, objectives were successfully achieved. Planning was carried out using Look Ahead, organizing workflow, and achieving a plan fulfillment percentage exceeding 70% of the projected values. Consequently, favorable schedule indices were evident, surpassing budget projections in executed budgets. The application of Lean Construction methodology successfully completed the entire project within the set timeframe. Furthermore, productivity and crew performance improvements were observed in a specific task.

RESUMEN Con una población creciente, el rubro de la construcción día a día se va incrementado por las exigencias de la sociedad, por ello es por lo que la presente investigación se focalizó en la aplicación de la metodología Lean Construction en una obra de pavimentación urbana. Dicha metodología es no experimental y se basa en la recolección de datos en campo que permiten realizar mediciones durante la ejecución de las actividades en una línea de tiempo determinada y conlleva a cuantificar resultados para ser analizados. Antes de la aplicación de la metodología se presentaban atrasos en la ejecución de la obra, pero con la implementación y la aplicación de la metodología Lean Construction mediante sus herramientas, se lograron cumplir los objetivos trazados, con una planificación realizada mediante Look Ahead. Esto permitió ordenar los flujos de trabajo y obtener resultados como el del porcentaje del plan cumplido, el cual fue mayor al 70% de lo proyectado. Por consiguiente, se evidencia en los índices del cronograma que se lograron valores favorables para el avance de obra, cuyos presupuestos ejecutados superaron a los presupuestos proyectados. Por lo tanto, la aplicación de la metodología Lean Construction logró cumplir con la totalidad del proyecto en un plazo fijado. Además, se evidenciaron mejoras en la productividad y los rendimientos de las cuadrillas en una partida específica.

Resumo: Este artigo analisa a representação de personagens femininas no reality show Cartel Crew, transmitido na rede de cabo dos EUA VH1. Para esta análise, foi desenvolvida uma folha de resumo com categorias que refletem aspetos sociodemográficos e outros elementos relacionados com as relações, a violência e a objectificação/sexualização. Estas categorias ajudam a identificar o nível de empoderamento das personagens femininas. O estudo descobriu que a agência das personagens femininas continuam a ser mediadas maioritariamente por homens, mesmo quando as mulheres alcançam posições de poder. As conclusões acima sugerem que as mulheres continuam a ser atribuídas a um papel específico definido por um olhar masculino. Embora esse papel tenha sido reconfigurado para parecer mais elegante e universalmente apelativo, não pode esconder os sinais da visão patriarcal da estas produções. Resumo Crew VH1 VH análise relações objectificaçãosexualização objectificação sexualização objectificação/sexualização homens poder masculino apelativo produções

Resumen: El presente artículo analiza la representación de los personajes femenino en el formato de telerrealidad Cartel Crew, de la cadena estadounidense VH1. Para el análisis hemos desarrollado como instrumento metodológico una ficha con categorías donde se reflejan aspectos sociodemográficos y otros ítems relacionados con el protagonismo, su mundo relacional, la violencia y cosificación/sexualización del personaje femenino. Estas categorías nos permiten conocer el nivel de empoderamiento. El análisis nos permite establecer que la autonomía de las protagonistas sigue mayoritariamente mediatizada por el hombre, a pesar de que alcancen ciertas posiciones de poder. Se sigue, de este modo, demandando un papel determinado a la mujer, bajo una mirada masculina que se ha reconfigurado para ser elegante y universal, pero que no puede esconder las huellas de la visión patriarcal de estos productos. Resumen Crew VH1 VH protagonismo relacional cosificaciónsexualización cosificación sexualización empoderamiento hombre poder modo mujer universal productos

Abstract: This article analyses the depiction of female characters on the reality show Cartel Crew, which was broadcast on the US cable network VH1. For this analysis, a summary sheet was developed as a methodological instrument, with categories reflecting sociodemographic aspects and other elements related to relationships, violence, and objectification/sexualisation. These categories help to identify the level of empowerment female characters are given. The study has found that the autonomy and agency of leading female characters in this reality show continue to be mostly mediated by men, even when the women attain positions of power. The findings suggest that women continue to be assigned a particular role defined by a male gaze. While that role has been reconfigured to appear more fashionable and universally appealing, it cannot conceal the signs of the patriarchal vision that informs these productions. Abstract Crew VH1 VH analysis instrument relationships violence objectificationsexualisation objectification sexualisation objectification/sexualisation given men power gaze appealing productions

RESUMO: O objetivo deste estudo é desenvolver um modelo matemático para otimização da tripulação em sistemas ferroviários urbanos. Neste sentido, o modelo proposto oferece uma solução que considere as quantidades de operadores alocados diariamente em cada jornada de trabalho, bem como prover a distribuição do efetivo em escalas de trabalho, de modo que minimize a quantidade total de operadores necessários, mas sem qualquer penalização às restrições contratuais de trabalho, restrições legais e especificidades práticas apresentadas pelo contexto operacional do sistema. Outro aspecto relevante acerca do modelo proposto é a otimização conjunta tanto do problema de alocação quanto escala, sem a necessidade de utilização de uma tabela de horários como parâmetro inicial ao modelo. Ainda neste trabalho, apresenta-se a aplicação do modelo em um operador de veículo leve sobre trilhos (VLT), na cidade do Rio de Janeiro, ao passo que permita a avaliação prática da capacidade de otimização do efetivo após o emprego do modelo, por meio da comparação entre os resultados computacionais gerados e o efetivo atualmente praticado no operador. Ao final, são testadas algumas alternativas de escalas de trabalho vigentes na legislação brasileira e apresentado seus ganhos diretos na redução do efetivo obtidos pela otimização do modelo, bem como a garantia de uma escala distribuída de forma mais equilibrada, evitando qualquer sobrecarga de trabalho dos operadores ou desvios na legislação vigente. RESUMO urbanos sentido necessários sistema apresentase apresenta se VLT, VLT , (VLT) Janeiro final equilibrada vigente (VLT

ABSTRACT: This study aims to develop a mathematical model for crew optimization in urban rail systems. In this sense, the proposed model offers a solution that considers the number of operators distributed daily in each working day, as well as providing the distribution of the workforce in work schedules, to minimize the total number of operators needed, but without any penalty to contractual work restrictions, legal restrictions and practical specificities presented by the operational context of the system. Another relevant aspect of the proposed model is the joint optimization of both the shifts and work schedule problem, without the need to use the timetable as an initial parameter for the model. Also in this work, the application of the model in a light rail vehicle (VLT) operator in the city of Rio de Janeiro is presented, while allowing the practical evaluation of the capacity to optimize the workforce after to use of the model, by the comparison between the generated computational results and the currently solution from the operator. In the end, some alternative work schedules in Brazilian labor legislation are tested and their direct gains in the reduction of the workforce obtained by optimizing the model are presented, as well as the guarantee of a more evenly fair work schedule, avoiding any work overload for operator or deviations from current labor legislation. ABSTRACT systems sense day needed system problem VLT (VLT end

Abstract: In recent years, professionalization has become an increasingly influential concept in the Mexico City hip-hop scene. This article links professionalization to a decline in the influence of crews, rooted in fraternity, informality and shared identity, in favor of more formal ‘teams’ that are organized around solo artists. Based on ethnographic research, this article offers a framework through which the different conceptions of the ‘professional’ are considered: the formation of the object (that is, a ‘professional’ musical object) and the formation of the subject (that is, a ‘professional’ musician or musical actor). In this way, it shows the different ways in which professionalization not only incorporates and characterizes the ‘non-strategic’, but also distinguishes hip-hop’s ‘professionalism’ from the same ‘non-strategic’ characteristic.

Resumen: En los últimos años, la profesionalización se ha convertido en un concepto cada vez más influyente en la escena del hip-hop de la Ciudad de México. Este artículo vincula al tema en este contexto a la disminución de la influencia de los crews, planteados en la fraternidad, la informalidad y la identidad compartida, en favor de “equipos” más formales que se organizan alrededor de solistas. Basado en una investigación etnográfica, este artículo considera las distintas concepciones sobre lo “profesional”: la conformación del objeto musical “profesional” y la del sujeto “profesional”. De esta forma, muestra que la profesionalización no sólo incorpora y caracteriza lo “no estratégico”, sino que distingue el “profesionalismo” del hip-hop de la misma característica “no estratégica”.

Resumen El presente artículo propone un estudio de los tripulantes de las embarcaciones españolas en el siglo XVII, marineros, pajes, grumetes, artilleros y pilotos, para reflejar el proceso de la llamada “globalización temprana”. El propósito consiste en examinar su papel como intermediarios entre mundos distantes y la conciencia que pudieron tener de esta primera globalización. Se esboza, primero, un retrato de la gente de mar para intentar definir los contornos de sus vidas globales. Se analiza, seguidamente, la vida material de los tripulantes para destacar las características de un mundo que empezaba a globalizarse. Para terminar, se estudian las actitudes ante la muerte de estos tripulantes para revelar en qué medida sus vidas y sus devociones religiosas reflejaron dicha conciencia.

Abstract This article studies the crews of Spanish ships during the seventeenth century - sailors, pages, cabin boys, artillerymen and captains - in order to reflect on “early globalization.” It examines their role as intermediaries between distant worlds and bearers of knowledge during this initial globalization process. First, it sketches a portrait of these seamen to define the outlines of their global lives. It then analyzes the material lives of crews in order to emphasize the characteristics of a world that was beginning to be globalized. Finally, it studies the attitudes toward death found among the crewmen to reveal the extent to which their lives and their religious beliefs reflected this consciousness.

ABSTRACT The paper analyzes the judgment in a case in which the owner and the crew of an artisanal fishing vessel entered what the General Act of Fisheries and Aquaculture calls a “contract or partnership at parts”. The plaintiff crew brought an action for enforcement of this contract, requesting that the shipowner be ordered to pay the difference of a final liquidation of the fishing for several seasons, as well as its share in the sale of the catch quota to a third party. The commentary highlights the difficulties raised by the distinction between contracts which distributes a percentage of the profit of the business between parties, and partnerships, as well as the (contingent) place of legal entity in the latter.

RESUMEN El trabajo analiza la sentencia recaída en un caso en que el armador y la tripulación de una embarcación de pesca artesanal celebraron lo que la Ley General de Pesca y Acuicultura llama un “contrato o sociedad a la parte”. La tripulación demandante ejerció la acción de cumplimiento de este contrato y solicita que el armador sea condenado a pagar el producto de una reliquidación de la pesca de varias temporadas, así como la parte que le correspondía en una venta de la cuota de captura a un tercero. El comentario pone de relieve las dificultades que plantea la distinción entre negocios parciarios y contrato de sociedad, así como el lugar (contingente) de la personalidad jurídica en este último.

Abstract: According to the International Maritime Organisation, oil tankers transport around 2.9 billion tonnes of crude oil and petroleum products by sea each year worldwide. Most of the time, oil is transported safely and quietly. However, the development of the transport activity is not free from risks that threaten the success of the navigation, endangering the ship, the oil cargo and, of course, the environment. This article studies, analyses, systematises and understands how the «unseaworthiness» of the ship is a prerequisite that maximises the probability of the occurrence of an environmental catastrophe due to the spillage or dumping of oil at sea. For this purpose, it is determined what is seaworthiness, the factors on which the concept is based; the consequences of the absence, lack of suitability, incompetence or lack of completeness are analysed which, if present both in a structural and naval technical aspect, as well as in the surveillance and control exercised by the tanker owner over the crew and other dependents, could ensure and prevent the occurrence of risks that may be an efficient cause for the spill or dumping of oil at sea.

Resumen: Según la Organización Marítima Internacional, los buques petroleros transportan alrededor de 2.900 millones de toneladas de petróleo crudo y productos derivados del petróleo por mar cada año en todo el mundo. La mayor parte del tiempo, los hidrocarburos se transportan de manera segura y tranquila. No obstante, el desarrollo de la actividad transportadora no está exenta de riesgos que amenacen el éxito de la navegación, poniendo en peligro al buque, la carga de petróleo, y como no al medio ambiente. El presente artículo estudia, analiza, sistematiza y comprende cómo la falta de navegabilidad o «innavegabilidad» del barco, constituye un presupuesto que maximiza la probabilidad de advenimiento de una catástrofe ambiental, por el derrame o vertimiento de hidrocarburos en el mar. Para ello, se determina qué es la navegabilidad, los factores en que se erige el concepto; se analizan las consecuencias de la ausencia, carencia de idoneidad, incompetencia o falta de completitud que, de estar presentes tanto en un aspecto estructural y de técnica naval, como en la vigilancia y control que ejerce el armador del buque petrolero, sobre la tripulación y demás dependientes, podrían asegurar y prevenir la ocurrencia de los riesgos que pueden ser causa eficiente para el derrame o vertimiento de hidrocarburos en el mar.

Abstract: The main objective of this article is to analyze the metric properties of students’ perception about the teaching activity in higher education through the application of the validated questionnaire “Student Evaluation of Educational Quality”, in of Strategic Management of the Degree in Labour Relations and Human Resources subject, at the University of Extremadura. This study is carried out by means of a quantitative analysis, analyzing the metrics of the questionnaire based on the opinion of the students. Of the eight dimensions analyzed, the “Personal Attitude” dimension stands out with a value of 4.85 out of 5, which translates into the importance of the teacher’s predisposition, both in terms of increasing the student’s academic performance, as well as the social benefits in the classroom. The results show the general satisfaction that students have with the teaching crew through this learning technique. Finally, with the Spearman correlation between dimensions, it is shown that the opinion reflected by the students, in the questionnaire, is not conditioned by the marks they obtain in the exams. Abstract Student Quality, Quality , Quality” subject Extremadura analysis analyzed Personal Attitude 485 4 85 4.8 5 teachers teacher s predisposition student performance classroom technique Finally exams 48 8 4.

Resumen: El presente artículo tiene como objetivo primordial analizar las propiedades métricas de la percepción que tienen los estudiantes acerca de la actividad docente en educación superior mediante la aplicación del cuestionario validado “Student Evaluation of Educational Quality” en la asignatura de Dirección Estratégica del Grado en Relaciones Laborales y Recursos Humanos de la Universidad de Extremadura. El estudio se realiza mediante un análisis cuantitativo analizando las métricas del cuestionario basado en la opinión de los estudiantes. De las ocho dimensiones analizadas destaca la dimensión de “Actitud Personal” con un valor de 4,85 sobre 5, lo que se traduce en la importancia de la predisposición del docente tanto de cara al aumento del rendimiento académico del estudiante, así como de los beneficios sociales en el aula. Los resultados muestran la satisfacción general que tienen los estudiantes con el equipo docente mediante esta técnica de aprendizaje. Finalmente, con la correlación de Spearman entre dimensiones, se demuestra que la opinión que reflejan los estudiantes en el cuestionario no está condicionada por las notas que obtienen en los exámenes. Resumen Student Quality Extremadura Actitud Personal 485 4 85 4,8 5 estudiante aula aprendizaje Finalmente exámenes 48 8 4,

Engels vir Maritieme Doeleindes sluit 'n verskeidenheid uiteenlopende registers in. Die meeste van die woordeboeke en glossariums word egter toegespits op óf Algemene Maritieme Engels óf Seevaartengels, terwyl ander aspekte van die maritieme bedryf onvoldoende deur gespesialiseerde leksikografiese materiaal gedek word, veral deur formele woordeboeke. Aangesien die hoofklassifikasie rakende die bemanning en operasionele stelsels aan boord 'n skip gekoppel is aan die Dek- en Ingenieursdepartement, het ons gepoog om die ooreenkomste en verskille tussen die tegniese leksikons van die twee gebiede te verken om te bepaal of aparte woordeboeke en glossariums dalk benodig word, en of 'n algemene maritieme woordeboek voldoende sal wees. Om die tegniese leksikons waarop gefokus is, te toets en te vergelyk, het ons hedendaagse korpuslinguistiese metodes en -sagteware gebruik. Die resultate toon beduidende verskille in die kernwoordeskat van die korpora wat vergelyk is. Die bevindings dui ongetwyfeld en weer eens daarop dat spesiale aandag en fokus vereis word wanneer die maritieme leksis geïnterpreteer word, en dui ook daarop dat 'n duidelike onderskeid tussen Engels vir Seevaart- en Engels vir Skeepsvaartingenieurswesedoeleindes getref moet word. n Seevaartengels Dek Ingenieursdepartement wees sagteware gebruik Seevaart

English for Maritime Purposes comprises a variety of different registers. However, most of the dictionaries and glossaries are dedicated either to General Maritime English or Nautical English, while other aspects of the maritime industry are poorly covered by specialized lexicographic material, especially as regards formal dictionaries. Considering that the main classification onboard ship in terms of the crew and operational systems is related to the Deck and the Engineering Department, we sought to explore the similarities and differences between the technical lexes of the two areas, in order to see whether separated dictionaries and glossaries might be required, or a common maritime one would suffice. To test and measure the tackled technical vocabularies, we utilized contemporary corpus linguistics methods and software. The results show significant differences in the key vocabulary of the compared corpora. The findings clearly and once more call for special attention and focus when it comes to the interpretation of maritime lexis, as well as for establishing a clear distinction between English for Nautical and for Marine Engineering purposes. registers However material Department areas required suffice vocabularies software corpora lexis purposes

Abstract The main idea of aviation in the 21st century is the safety of passengers and crew, but the human is always inclined towards comfort. The purpose of the article is to study the comfort requirements for the interior layout of long-haul aircraft. The concept of the fuselage layout with capsule accommodation of passengers was formed. It was stated that with a flight range of more than 8 hours, the flight is comfortable only in business or first classes. The proposed variant of capsule placement, designed for the Boeing 777-200LR cabin, can be installed in other passenger airliners with a ceiling height of at least 2.1 m. Also, it was indicated that the proposed two-story capsule placement allows to provide the layout with first-class seats in a given cabin. It was concluded that the installation of individual passenger cells in railway transport on the high-speed trains Strizh or Sobsan, in airport terminals as hotel accommodation also holds promises.

Resumo Introdução: A consulta aberta é uma consulta com marcação no próprio dia para resolver situações de doença aguda. A sua desadequada utilização é um problema recorrente que gera incapacidade de resposta adequada aos utentes. Durante a pandemia por COVID-19 foi necessário reformular a atividade assistencial nos cuidados de saúde primários, limitando o contacto presencial com os utentes. Objetivos: Conhecer o impacto da COVID-19 na utilização da consulta aberta, bem como fazer a caracterização sociodemográfica dos utentes utilizadores e compreender os motivos de utilização mais frequentes. Métodos: Estudo observacional descritivo com componente analítica da consulta aberta em abril/19, abril/20 e abril/21, numa unidade de saúde familiar, com caracterização sociodemográfica dos utentes e avaliação dos motivos de consulta e sua adequação. Resultados: Realizaram-se uma média diária de 18 consultas em 2019, 19 em 2020 e 31 em 2021. Não se observaram diferenças sociodemográficas dos utentes entre os períodos analisados, havendo sempre predomínio do sexo feminino e idade média entre 45 e 52 anos. Em pré-pandemia prevaleciam os motivos gerais e músculo-esqueléticos. Em 2020 aumentou o peso relativo das queixas respiratórias e, em 2021, foi restabelecido o padrão pré-pandemia. O ano relacionou-se com a adequabilidade do motivo (p<0,001), com valores de inadequabilidade de 47% em 2019, 19% em 2020 e 31% em 2021. Os motivos inadequados mais frequentes foram os mesmos - queixas não agudas, visualização de exames e renovação/pedido de certificado de incapacidade para o trabalho -, mas com pesos relativos diferentes (p<0,001). Conclusões: A pandemia COVID-19 associou-se a um aumento da adequação dos motivos de utilização da consulta aberta, o que mostra que não só é fundamental uma adequada educação dos doentes quanto aos motivos corretos para recurso à consulta aberta, mas também assegurar uma adequada acessibilidade às restantes modalidades de consulta para não motivar o recurso indevido à consulta aberta.

Abstract Introduction: The walk-in appointment is an appointment scheduled on the same day, to solve situations of acute illness. Its’ inappropriate use is a recurrent problem that causes a failure to respond adequately to users. During the COVID-19 pandemic, there was a reformulation of activity in primary health care as it was necessary to limit face-to-face contact with patients. Objectives: Identifying the impact of COVID-19 on the walk-in appointment demand, as well as making a sociodemographic characterization of the users and a descriptive analysis of the most frequent motives for consultation. Methods: Descriptive observational study with an analytical component of the walk-in appointment on April/19, April/20, and April/21, in a family health unit, with sociodemographic characterization and identification of the motives for an appointment and their adequacy. Results: An average of 18 daily appointments were conducted in 2019, 19 in 2020, and 31 in 2021. There were no differences in the users’ sociodemographic characteristics between the analyzed periods, with a transversal predominance of females and a mean age between 45 and 52 years. Before the pandemic, general and musculoskeletal reasons prevailed. In 2020, the relative weight of respiratory complaints increased and in 2021 the pre-pandemic pattern was restored. The year was related to the adequacy of the reason (p<0.001), with inadequacy values of 47% in 2019, 19% in 2020, and 31% in 2021. The most frequent inadequate motives were the same - non-acute clinical complaints, delivery of exam results, and renewal/request of sick leaves - but with different relative weights (p<0.001). Conclusion: COVID-19 pandemic was associated with higher adequacy of motives for walk-in appointments, highlighting the importance of adequate patient education about the correct reasons for using the walk-in appointment, as well as to ensure adequate access to other appointment modalities, so as not to motivate the improper use of the walk-in appointment.