bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of Using Nanofluids in Solar Collectors
Authors: ÜNVAR Sinan , MENLİK Tayfun
Published: December 2020

The importance of using solar energy, one of the renewable energy sources, has started to be understood more recently. The negative environmental effects and limited amounts of fossil fuels have led to increased demand for renewable energy sources worldwide and the production of various models and devices has accelerated to take advantage of solar energy, which is the basis of all energy sources. Using solar collectors as a way to benefit from solar energy has been used for many years. Although solar collectors are generally divided into 4 types as flat plate (FPSC), evacuated tube (ETSC), parabolic (PSC) and heat pipe (HPSC), these types can also be divided into separate types with many different features. The most commonly used solar collector type in the world is Flat Plate Solar Collector. The most important reasons for this are being cheap, easily produced and applied in various ways. Yet, the thermal productivity of FPSCs decreases below 40% in non-ideal climate conditions with low surrounding temperature. The existence of such disadvantages of FPSCs led to the production of Evacuated Tube Solar Collectors. With the advancing technology, the utilization of heat pipes in collectors has come to the agenda and as a result of the studies conducted, it has been determined that the use of heat pipe improves efficiency. In addition, the use of nanofluids in solar collectors and heat pipes has become quite common, and many studies have been carried out especially on this subject recently. The primary objective is always to improve the performance of the system and achieve efficiency. In this way, solar energy will be used in the most effective way and world energy supply demand will be met by using renewable resources.
Human Rights in Mexico
Authors: Espinosa Leal Idalia Patricia
Published: December 2020

The content of this work focuses on three aspects, the first highlights the importance of human rights, which are integrated into our constitution, with the aim of safeguarding human dignity for the healthy development of the individual in society, based on the principles of freedom, justice and peace; secondly, the need for respect for human rights is highlighted and finally highlights the role that each of us, as a society, is playing in defending these universal rights. We start from the idea that simply because we are people, we all deserve to be treated as such, especially when we act within a democratic society. It is concluded from the analysis that our "defensive" conduct is a key part of the prevalence of human rights.
DOSSIÊ ABdC 2020: FABULAÇÕES CURRICULANTES NA ESCOLA E NA UNIVERSIDADE
Authors: Carvalho Maria Inez , Jesus Rosane Meire Vieira de
Published: December 2020

Inventado com a intenção de problematizar as atualizações dos currículos naqueles atípicos geomomentos nos quais as leis da natureza se tornam menos universais e a intensidade das flutuações remete a uma potencialização da percepção dos comportamentos probabilísticos do evento, nesse caso, do evento curricular, o dossiê Fabulações curriculantes na escola e na universidade se concretiza em oito artigos fabulantes.
INTEGRANDO TECNOLOGIA, CIBERESPAÇO E ENSINO DE HISTÓRIA: PROPOSTA DE UM WEB CURRÍCULO HUMANIZADOR
Authors: Tamanini Paulo Augusto , Souza Maria Do Socorro
Published: December 2020

O artigo visa discutir a integração das Tecnologias Digitais da Informação e Comunicação ao ensino de História para pensar um web currículo de caráter humanizador para essa disciplina. Baseado em Freire e Bakhtin, o texto aborda a educação libertadora e dialógica como meio de humanizar a relação entre educador, educando e tecnologia. Discute estratégias para integrar as tecnologias ao ensino de História, para propiciar a inclusão digital do aluno e, desse modo, o uso crítico e criativo dessas tecnologias, via diálogo. O Portal de História, produto de um estudo bibliográfico e de campo realizado no âmbito do Mestrado em Ensino da UFERSA, comprova ser possível integrar o ensino de História às tecnologias, via um web currículo próximo da realidade da escola, que contribua para a inclusão digital do aluno e para torná-lo sujeito do seu devir.
CULTURA, DIVERSIDADE E DIRETRIZES PARA A EDUCAÇÃO ESCOLAR INDÍGENA
Authors: Nascimento Maria Rosemi Araujo do
Published: December 2020

Este artigo trata de concepções de Cultura, Diversidade e Educação Escolar Indígena. Também descreve acerca da Legislação da Educação Escolar Indígena e os avanços nas duas últimas décadas. É um recorte da tese “Formação de Professores e Currículo: uma prática em Ciências da Natureza para a diversidade com alunos indígenas em escola não indígena na cidade de Manaus”, cujo objetivo foi analisar a prática do ensino do componente curricular Ciências da Natureza para indígenas inseridos em escolas não indígenas. Trata-se de um estudo de caso com abordagem qualitativa. A metodologia contempla observação direta, caminhada pedagógica, observação sistemática não participante, aula compartilhada, questionário e entrevista semiestruturada. Os resultados apresentaram invisibilidade dos alunos indígenas no currículo e ensino de Ciências da Natureza descontextualizado da cultura indígena, que não é contemplada nas práticas pedagógicas.
BALSA ESCOLA: EDUCAÇÃO DE TEMPO INTEGRAL EM UMA ESCOLA LOCALIZADA NO CAMPO EM HUMAITÁ NO ESTADO DO AMAZONAS
Authors: Franco Zilda Gláucia Elias , Nogueira Eulina Maria Leite , Marques Saray
Published: December 2020

Este artigo discute as questões e as possibilidades trazidas pela proposta de tempo integral, no contexto de uma escola do campo da Rede Pública Municipal de Humaitá, município da região sul do Amazonas. A pesquisa teve como objetivo compreender como está organizado o tempo integral nessa unidade escolar e como foi construída a sua proposta curricular. Por meio da abordagem qualitativa, com o apoio da pesquisa de campo, foram aplicados, aos educadores e aos educandos, questionários semiestruturados contendo questões abertas e fechadas. Os resultados apontam que as dificuldades encontradas na escola pesquisada, desde o trajeto de suas casas até a escola, ao acesso aos recursos tecnológicos, dentre outras, são aspectos que interferem no andamento das atividades/do currículo escolar.
Dividend payout ratio ditinjau dari ownership structure dan free cash flow perusahaan sektor barang konsumsi yang terdaftar di Bursa Efek Indonesia
Authors: Sanjaya Sigit , Haryani Dessy , Yamasitha Yamasitha
Published: December 2020

Penelitian ini bertujuan untuk mengetahui pengaruh ownership structure (terdiri dari institutional ownership dan managerial ownership) dan free cash flow terhadap dividend payout ratio pada perusahaan sektor barang konsumsi yang terdaftar di Bursa Efek Indonesia periode 2014 -2018. Teknik pengambilan sampel menggunakan purposive sampling. Teknik analisis data menggunakan regresi data panel dimana terdiri dari uji pemilihan model estimasi, uji asumsi klasik, uji koefisien determinasi, uji F dan uji t. Hasil penelitian menunjukkan (1) institutional ownership berpengaruh signifikan positif terhadap dividend payout ratio (2) managerial ownership berpengaruh signifikan positif terhadap dividend payout ratio (3) free cash flow berpangaruh signifikan positif terhadap dividend payout ratio.
Game Design for Emotions: a practicebased research on the design of game emotional experience
Authors: Lucio de Mattos Rafael
Published: December 2020

This research focuses on the development of emotionally directed gaming experiences demonstrating how the same game, when subjected to targeted audiovisual changes that do not affect its rules, objectives, and mechanics, can provide different emotional experiences. These experiences are related to the psychological and player motivation profiles of each individual. To this end, the research was structured into four main parts.
The first, theoretical-conceptual, explored game design, seeking to find structures and elements that make up a game and the experience it proposes. A bibliographic review was carried out on: the study of emotions, including different classification approaches; a study on the relationships established between player, avatar, and game environment; and the concept of emotional design, proposed by Don Norman.
The second part, analytical-investigative, consisted of the case study of three games (Journey, Amnesia: The Dark Descent, and Thomas Was Alone) with different gaming experience proposals. They were analyzed using a methodology based on game design elements and their relationship with the levels of emotional design. In this way, it was possible to understand how the design of each game contributes to the creation/development of different emotional experiences.
In the third part, a field research was carried out to collect the psychological (Big Five) and player motivation (Quantic Foundry) profiles, through the application of questionnaires. The participants were then divided into groups according to their profiles (psychological and player motivation) to participate in the second part of this stage. Based on the information gathered by the previous steps, a short game was developed. From it, changes in its design were made to generate modified versions that, maintaining the game structure and essential rules, proposed different experiences to the players. All games had a player performance information collection system developed specifically for the research.
The games were then made available to participants from the previous stages, who answered a final questionnaire. The responses, as well as information about the players’ performance, were used both to assess how each game affected the perception and to verify whether the psychological and motivation profiles of the player help to understand the emotional experiences of the game. Thus, the fourth part consisted of putting the knowledge into practice and testing the hypotheses developed from the previous steps and listed below.
The research showed that 1) the visual and sound aesthetic influence of a game can have a considerable impact on the experience of playing, even if it does not affect the game mechanically; 2) The Big Five psychological profile and the player motivation profile are related to the emotional gaming experiences and can be used to better understand them.
Cartography of a Pedagogical Experience: Architecture as a (In) Discipline in Process
Authors: Barbieri Maria Júlia
Published: December 2020

This article focuses on the experience of teaching and teaching-learning relationswith a focus on the creative processes in the Architecture and Urbanism Course, more specifically in a curricular unit of Architecture Design. The reflection proposed here takes into account the body-environment relationship as a methodological matrix for teaching and investigates the way in which students understand, interpret and act from their own body’s experiences in space. The theoretical subsidies that support this approach are related to the studies of cognition, mainly from the perspective of the embodied mind theory developed by VARELA, THOMPSON, & ROSCH (1992) in addition to JOHNSON (2007) and his theory of meaning-making, and studies developed by KASTRUP (1999) in his theory of inventiveness. We seek in these theorists the possibility of weaving a discussion that understands the process of creation as an unceasing movement of exchanges between the body and the environment. In this sense, we developed and applied a methodology that aims to explore different experiences of the body in space as mediators of the creative process in architecture. Removing students from the closed space of the classroom, getting them out of chairs and desks and returning the movement to the bodies and the rediscovery of environmental perceptions is the starting point for this methodology developed in the light of CARERI’s drift theory (2013). The drift gains a very valuable sense here, since by launching the body into space in search of unexpected encounters, we are exploring the powers of this encounter so that students can make this event a fertile field for the creation process, returning them to the fecund environment of discovery as opposed to the sterile space of the classroom. The (in) disciplinary character of this methodology, in the most radicalsense of transdisciplinarity, makes the body and space have their blurred limits, and can thus co-evolve in motion, giving rise to creative processes, in which students they invent themselves at the same time as they invent the world in which they learn. All cartographies developed in the student creation processes in this course are presented on the social network Instagram, where the work teams share their processes, appropriating the tools and languages specific to this media.
Atmospheric rooms as experience in the space-time in an evolutionary museum- Alexander Dorner's exhibition design
Authors: Rafael de Carvalho Marcelo , Marins de Oliveira Mirtes
Published: December 2020

In order to contribute to the studies of exhibition design, its practice and related fields, the aim of the article is to present and organize in ahistorical perspective some of the contributions and proposals made by Alexander Dorner (1893-1957), art historian, supporter of modern art. Dorner is recognized for his proposals carried out in the design of the exhibition of the rooms of the Landesmuseum in Hannover, Germany, after assuming its direction in the early 1920s. Later, he improved his conceptions when director of the Rhode Island Museum School of Design, in Providence, after immigrating to the United States in 1937. Dorner conceptions were of a living and dynamic museum, not a dead monument in an established way, limited only to a set of exhibition rooms for historical artifacts and artistic treasures closed in shop windows, a kind of deposit of objects. His exhibitions proposals consisted inenvironments for the works, spaces that he called “atmospheric rooms”. In these environments, the aim was to evoke the spirit of each period, in which the user, immersed, would have an opportunity to approach a visual and sensitive logic of the culture in which the works had been created.
The idea was not to create a simple imitation of the period, but to allow sensations suggested by colors and shapes, gardens, images of historical exteriors placed over windows, using of devices such as speakers and headphones (for music and poetry of the time), molding a “body imaginary” through experience.
In its conception, the museum should demonstrate the history of art and its aesthetic changes over time, as the artistic production of a previous time would allow the exercise of projecting the imagination in the past and updating it with the perspective of the present. This would allow the learning of history, giving more meaning to the present time and boosting and shaping the culture of the future, once the evolutionary connectivity of artistic and cultural production is understood.In order to exhibit the artist production of his time, in partnership with the Russian artist El Lissitzky (1890-1941), he built during 1927 and 1928 what would become known as the first permanent abstract art gallery in a museum, the Abstract Cabinet (Abstraktes Kabinett). With an areasmaller than twenty square meters, it had metal slats on its walls and, as visitors moved, offered a kind of optical illusion. Also sliding panels forcedthe public to manipulate and choose to reveal or hide certain paintings. Historical, theoretical research on exhibition design is the starting point for establishing a historical descriptive method to generate conceptual and morphological analysis parameters to characterizes an exhibition.
Dream-based cartography: creative processes involving an imaginary Prague
Authors: Catrópa Andréa
Published: December 2020

This work aims to discuss aspects of artistic creation derived from dream speculation. Based on a dream that took place in the capital of Czechoslovakia, a region unknown to the dreamer, and which happened at the beginning of the quarantine period due to the Coronavirus pandemic, the research began on the internet using search mechanisms. In the evening event, in addition to its narrative elements, the journey through places that presented themselves vividly was of paramount importance, so the first stage arose from the researcher’s curiosity in verifying if there was any coincidence between the real Prague and the dream Prague. To her surprise, although there was no prior contact with systematized information about that location, coincidences were emerging. And these similarities allowed the initial elaboration of a data collection for the memories would not be lost and could be used in the future as tools for artistic creation. Somehow, that fact so unique and different from other experienced dream phenomena aroused a series of sensations and reflections on the possibility of incorporating the unforeseen and irrational element, which daily invades our senses when we are asleep, as a means of promoting academic inquiry and artistic research.
In Antiquity, as the work of Artemidoro confirms, the dream had a cosmic dimension that was related to the mystical tradition and to the collectivity. However, the psychoanalytic conception, influential in western society since the first decades of the twentieth century, contributed to fixing the perception of the dream as a private event and that concerns only the individual dimension. At the same time, neuroscience favors a biological approach to dreaming, even though Sidarta Ribeiro is a dissonant voice in this environment and dedicates himself to research focused on the “oracle of the night”. The Brazilian neuroscientist says that, in his work, he identified a very intricate relationship between dreams and memory and a double temporal articulation: we dream as a way of remembering what we are and do, and also to prepare for the future.
These reflections joined the coordinates collected by me during the aforementioned night experience. The conceptual project design that I provisionally called “Prague Dreamiary” started from a dream and proceeded, at first, with the help of Internet search engines. From there, a map was created that unites both objective information found on the networks and the translation of dreamed symbolic messages. The dream experience allowed a deviation in the search algorithms by means of private intuition, which contradicts the consensual rational tendency behind the “improvement” of the artificial intelligence of these mechanisms. In addition to the creation of “dream hyperlinks”, this process included bibliographic research and the creation of a digital banner for the online page that will contain more information about the work in process.
De la Transición democrática a la posmodernidad. Propuestas poéticas para una España cambiante
Authors: Calabrese Giuliana
Published: December 2020

Presentación
Sexualidad en el contexto de los procesos de vida de mujeres y varones con endocrinopatías: una aproximación cualitativa
Authors:   Departamento de Psicología, Instituto Nacional de Endocrinología, Cuba, Ledón-Llanes Loraine ,   Departamento de Biología de la Reproducción Dr. Carlos Gual Castro, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México, Torres-Rodríguez Beatriz ,   Departamento de Psicología, Centro de Investigaciones Médico Quirúrgicas, Cuba, Turcios-Tristá Silvia Elena ,   Vice-Dirección de Asistencia Médica, Instituto Nacional de Endocrinología, Cuba, Méndez-Gómez Neida ,   Sociedad Cubana Multidisciplinaria de Estudios de la Sexualidad, SOCUMES, Cuba, Durand-Carbajal Marta Margarita ,   Departamento de Biología de la Reproducción Dr. Carlos Gual Castro, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México
Published: December 2020

Antecedentes: las enfermedades del sistema endocrino pueden afectar la sexualidad por sus efectos hormonales, las comorbilidades asociadas y su impacto psicosocial, tema poco estudiado desde las perspectivas de personas con estas enfermedades. Objetivos: se realizó un estudio cualitativo dirigido a comprender las experiencias sexuales de mujeres y varones con enfermedades endocrinas que producen cambios en la apariencia física. Método: se estructuró un diseño de estudio analítico-interpretativo. Participaron 68 personas entre 20 y 45 años de edad, atendidos en el Instituto Nacional de Endocrinología, La Habana, Cuba. Los instrumentos de recolección de la información utilizados fueron una planilla de datos generales, una guía de entrevista en profundidad y dos pruebas psicológicas proyectivas. Los aspectos éticos fueron considerados. Resultados: de las entrevistas en profundidad, emergieron 4 temas: 1) la expresión multidimensional de la enfermedad, 2) enfermedad y áreas de vida, 3) ejercicio de la sexualidad con la enfermedad, y 4) estrategias de afrontamiento en el área sexual; vinculados con los significados expresados sobre la salud, el cuerpo, el género y la sexualidad. Conclusiones: las/los participantes contextualizaron sus experiencias sexuales en el impacto biopsicosocial de la enfermedad. La reproducción o cuestionamiento de los significados expresados influyó en la calidad de sus experiencias sexuales. El estudio mostró que esta constituye un área de vulnerabilidad para la salud integral de las/los participantes.
Hybrid Short Glass Fibre Composites Reinforced with Silica Micro-particles
Authors: Júnior Lenir Abreu , Freire Rodrigo Teixeira , Oliveira Pablo Resende , Christoforo André Luis , Garcia Carlos Thomas , Pino Gilberto Garcia , Panzera Tulio Hallak
Published: December 2020

This work investigates epoxy composites reinforced by randomly oriented, short glass fibres and silica microparticles. A full-factorial experiment evaluates the effects of glass fibre mass fraction (15 and 20 wt%) and length (5 and 10 mm), and the mass fraction of silica microparticles (5 and 10 wt%) on the apparent density and porosity, as well as the compressive and tensile strength and modulus of the hybrid composites. Hybrid epoxy composites present significantly higher tensile strength (9%) and modulus (57%), as well as compressive strength (up to 15%) relative to pure epoxy.
Percepciones de los diseñadores acerca de los manuales de identidad visual corporativa y su utilización en las ONGs
Authors: Tarazona Belenguer Nereida , Ampuero Canellas Olga , González-del Río Cogorno Jimena , Jordá Albiñana Begoña
Published: December 2020

El manual de identidad visual es el documento que regula el uso de la marca y toda empresa que desee gestionar eficazmente su identidad visual debería disponer de uno. Esto también se extiende al caso de las ONGs, sector donde la marca se ha convertido en algo fundamental. Este trabajo recoge, mediante entrevistas en profundidad, las percepciones de 16 profesionales del sector gráfico acerca de la utilidad, formato y contenidos del manual y su aplicación concreta a las marcas de las ONGs: contenidos, gestión y diferencias con respecto a otros sectores.
PEMANFAATAN ZIPGRADE SEBAGAI MEDIA PENILAIAN UNTUK MEMETAKAN PENGUASAAN SISWA TERHADAP TOPIK PENGUKURAN DI SMK
Authors: Mustofa Zainul
Published: December 2020

Topik pengukuran merupakan topik penting yang harus dikuasai siswa SMK bidang teknik komputer dan jaringan. Guru sebagai fasilitator pembelajaran perlu memetakan penguasaan siswa dalam hal teori maupun praktik sebagai bahan evaluasi pemberian umpan balik baik berupa pengayaan maupun remedial. Salah satu media yang secara cepat dan tepat dalam memetakan penguasaan siswa adalah zipgrade. Tujuan penelitian ini yaitu untuk mengetahui penguasaan siswa terhadap topik pengukuran menggunakan zipgrade. Metode penelitian menggunakan metode studi kasus. Subjek penelitian adalah siswa Teknik computer dan jaringan di SMK Al Munawwariyyah tahun pelajaran 2020/2021 dengan jumlah 85 siswa. Hasil penelitian menunjukkan bahwa rata-rata penguasaan 47.5 %. Beberapa konsep yang dianggap sulit oleh sebagian besar siswa adalah pembacaan nilai hasil pengukuran dan aturan penggunaan AVO meter,  dan penggunaan aturan angka penting dalam operasi perkalian dan pembagian, serta memprediksi resistor yang sesuai dengan nilai yang diberikan.
POTENSI PENDUKUNG PELAKSANAAN PROGRAM INDONESIA PINTAR: STUDI KASUS DI KECAMATAN BABAKAN KABUPATEN CIREBON
Authors: Meiynana  , Machdum Sari Viciawati
Published: December 2020

Penelitian ini bertujuan untuk mengetahui potensi pendukung penerapan kebijakan PIP sebagai upaya untuk meningkatkan akses pendidikan untuk anak usia sekolah yang berasal dari keluarga yang kurang mampu. Penelitian merupakan studi kasus di Kecamatan Babakan Kabupaten Cirebon, yang menurut pengamatan sementara menunjukkan indikasi keberhasilannya dalam penerapan PIP. Penelitian ini menggunakan pendekatan kualitatif deskriptif. Pengumpulan data menggunakan telaah dokumen dengan menganalisis data laporan pelaksanaan PIP dan wawancara mendalam terhadap sejumlah unsur yang terkait. Hasil penelitian menunjukkan bahwa keberhasilan penerapan PIP didukung oleh empat aspek yang saling terkait, yakni: komunikasi yang baik, koordinasi antar unsur yang terlibat dilaksanakan secara berjenjang, sumberdaya yang memadai, dan birokrasi yang menjalankan peran dan fungsinya secara baik. Diharapkan hasil penelitian dapat menggugah daerah-daerah lainnya untuk menerapkan dalam pelaksanaan PIP.
Factors That Affect Profitability at the Conventional Bank of Indonesia
Authors: Wardhani Rulyanti Susi
Published: December 2020

This study aims to analyze the loan to deposit ratio, interest rates, inflation, and intellectual capital on profitability at the Indonesian Conventional Bank. This study uses panel data regression using three models: Common Effect, Fixed Effect, and Random Effects. The Chow and Hussman test results show that the best model is using the random effect model. The random effect model results show that the loan to deposit ratio and inflation effects, but interest rates and intellectual capital have no impact on profitability. This means that investors consider net income and pay attention to such as Loan to Deposit Ratio and Intellectual Capital. The company's performance in managing capital to be more effective and efficient, thereby increasing added value for companies and investors.
Analisis Perbandingan Kompresi File Wav Menggunakan Metode Huffman dan Run Length Encoding
Authors: Fatmawaty Fatmawaty , Mufty Mufty
Published: December 2020

Saat ini terdapat berbagai macam pilihan format audio namun tidak banyak pengguna yang memahami perbedaan diantaranya. Format Audio (Audio Format) adalah medium penyimpanan data audio dan musik dalam bentuk fisik dan format rekaman sebuah konten audio. Dalam dunia komputer sering disebut dengan file audio format yang berarti sebuah bentuk penyimpanan data digital audio pada sistem komputer. Saat ini terdapat berbagai macam format audio contohnya adalah wave,Mp3, wma dan masih banyak format lainnya, namun dalam sistem operasi windows yang digunakan adalah file bertipe wave tipe ini banyak sekali digunakan untuk keperluan multimedia dan game di dalam sistem operasi windows. Namun jika kita ingin merekam suara sekualitas cd audio maka diperlukan suatu media penyimpanan yang sangat besar sehingga membuat boros penyimpanan data atau hard disk sehingga untuk mengurangi kapasitas penyimpanan tersebut dan juga untuk pengiriman file tersebut membutuhkan waktu yang lama sehingga kita harus mengkompres file tersebut sehingga penyimpanan lebih efesien dan pengiriman menjadi lebih cepat
A luta pelo poder dizer “impeachment” e “golpe” na narrativa midiática do impedimento de Dilma Rousseff
Authors: Costa Maria Alcione Gonçalves da
Published: December 2020

O processo de impedimento de Dilma Rousseff foi um dos acontecimentos históricos mais emblemáticos e tensos de nossa história política recente, sendo marcado por uma luta acirrada pelo poder e pelo poder dizer. Diante desse confronto discursivo, surgiu o objetivo central da presente pesquisa, que é analisar os processos de designação desse acontecimento histórico na narrativa midiática do Jornal O Globo e das revistas Veja e Carta Capital, em suas versões online, observando os funcionamentos discursivos que produziram os sentidos de legalidade (efeito parafrástico) e de golpe (efeito metafórico), para o termo “impeachment”. Para tanto, filiamo-nos à teoria da Análise de Discurso Pecheuxtiana, a partir da qual desenvolvemos nossos gestos de análise sobre o funcionamento da memória discursiva nas narrativas midiáticas dos referidos órgãos de imprensa. Para efeitos de conclusão, podemos dizer que a narrativa midiática produzida sobre o evento de 2016 foi determinada por um jogo de forças que acabou institucionalizando o discurso da legalidade, o qual foi construído, essencialmente, por meio do funcionamento da paráfrase discursiva, que (re)atualizou os saberes da FD do impeachment, cristalizados no imaginário social brasileiro, após o processo de impeachment de Collor. Por seu turno, a narrativa midiática do golpe foi construída, essencialmente, por meio do efeito metafórico, que produziu a deriva dos sentidos em torno do significante “impeachment” que, em meio ao jogo de forças existentes, gradativamente, tem se descolado do sentido de legalidade e tem funcionado como paráfrase de golpe.
"Uma ponte para o futuro”: efeitos de sentido do discurso neoliberal no brasil
Authors: Tenório Neto João Francisco , Ericson Sóstenes
Published: December 2020

Com base na análise materialista do discurso (PÊCHEUX, 2015; 2014), este artigo tem por objetivo desvelar a opacidade da linguagem, a partir dos efeitos de sentido do discurso neoliberal, no cenário brasileiro do golpe de 2016, analisando um corpus extraído do documento “Uma ponte para o Futuro” (PMDB, 2015). Considerando os domínios de antecipação, atualidade e memória (COURTINE, 2014), demonstra-se como o discurso neoliberal se apresenta, silenciando o antagonismo de classes sociais, enquanto recupera uma memória que historicamente funciona para reforçar uma unidade nacional em prol de um futuro que não chega. No intradiscurso, o efeito de atualidade materializa no presente a necessidade de romper com um passado, associado aos governos petistas, apresentando uma proposta de governo alinhada aos interesses dominantes, metaforizada numa ponte que conduzirá o país ao desenvolvimento. O que se tem em conta, por antecipação, é a necessidade de identificação da classe trabalhadora com as necessidades apontadas como sendo do conjunto da sociedade brasileira, representada pela burguesia, e a defesa dos interesses políticos e econômicos do Estado nacional, nos moldes do modelo neoliberal. Para quem ousa se revoltar, desconstruir esta ponte é o desafio histórico que está posto no tempo presente.
O imperativo em variação na escrita mineira: o papel do sujeito e das seções das cartas
Authors: Carvalho Luiz Fernando de
Published: December 2020

O estatuto variável do imperativo de 2ª pessoa do singular, fenômeno profícuo no português brasileiro (PAREDES SILVA et al., 2000; SCHERRE, 2003; 2007; 2012; RUMEU, 2016; 2019; CARVALHO, 2020) é o tema central deste artigo. Assim, a partir do exame de cartas mineiras oitocentistas e novecentistas (1868-1993) autografadas por escritores cultos, procura-se averiguar o efeito que a referência ao sujeito de 2ª pessoa (CARDOSO, 2012; DINIZ, 2018) e às seções do gênero carta pessoal (SILVA, 2017) pode exercer sobre o fenômeno. Essa análise, orientada pelos pressupostos teórico-metodológicos da Sociolinguística (LABOV, 1972; ROMAINE, 1982; HERNÁNDEZ-CAMPOY; SCHILLING, 2012), comprova essa influência, tendo em vista a força da tradição gramatical (ROCHA LIMA, 2013 [1972]) sobre os escreventes e a presença de Tradições Discursivas (KABATEK, 2006) do gênero textual.
Tradição discursiva e historicidade da língua e do texto
Authors: Gomes Valéria Severina , Zavam Aurea Suely , Jungbluth Konstanze
Published: December 2020

Apresentação do dossiê Tradição discursiva e historicidade da língua e do texto
Vantagens da cirurgia do controle de danos comparada aos métodos tradicionais de abordagem ao paciente politraumatizado
Authors: Ton Layra , Corrêa Wagner Pablo , Abreu Bernardo Costa Berriel , Dos Santos Brenda Barreto , Souza Daniela Batista , Velho Giovanna Costa Moura , De Araujo Isabela Cardoso , Eugenio Isabela Oliveira , Pinto João Pedro Miguez , Arantes Natália Parreira
Published: December 2020

Este trabalho relatou as alterações fisiológicas e metabólicas graves que são comumente observadas ao tratar pacientes politraumatizados, as quais culminam na tríade letal do trauma, isto é, coagulopatia, acidose metabólica e hipotermia. Nesse contexto, foram abordados os procedimentos definitivos, ou seja, cirurgia definitiva segura, reconstrução e reabilitação. E os temporários, isto é, intervenções radiológicas, enxerto de stents e o controle de danos. Com isso, ter o êxito de cessar os acometimentos relacionados ao indivíduo politraumatizado, como a tríade letal. Buscou-se, também, evidenciar a importância e os benefícios da utilização do controle de danos em pacientes politraumatizados, cuja técnica é considerada uma inovação significativa em relação aos cuidados desses pacientes, apresentando as situações em que essa abordagem é mais indicada. Esta revisão tem o objetivo de expor as possíveis complicações que podem ser evitadas pela escolha e utilização correta do controle de danos, propiciando, assim, um melhor prognóstico para o paciente.
Compositionally-Restricted Attention-Based Network for Materials Property Prediction
Authors: Wang Anthony , Kauwe Steven , Murdock Ryan , Sparks Taylor
Published: December 2020

In this paper, we demonstrate a novel application of the Transformer self-attention mechanism. Our network, the Compositionally-Restricted Attention-Based network, referred to as CrabNet, explores the area of structure-agnostic materials property predictions when only a chemical formula is provided.Our results show that CrabNet's performance matches or exceeds current best practice methods on nearly all of 28 total benchmark datasets. We also demonstrate how CrabNet's architecture lends itself towards model interpretability by showing different visualization approaches that are made possible by CrabNet's design.We feel confident that CrabNet, and its attention-based framework, will be of keen interest to future materials informatics researchers.
Wrapping up Viruses at Multiscale Resolution: Optimizing PACKMOL and SIRAH Execution for Simulating the Zika Virus.
Authors: Soñora Martín , Martinez Leandro , Pantano Sergio , Machado Matías R.
Published: December 2020

Simulating huge biomolecular complexes of million atoms at relevant biological timescales is becoming accessible to the broad scientific community. That proves to be crucial for urgent responses against emergent diseases in real time. Yet, there are still issues to sort regarding the system setup so that Molecular Dynamics (MD) simulations can be run in a simple and standard way. Here, we introduce an optimized pipeline for building and simulating enveloped virus-like particles (VLP). First, the membrane packing problem is tackled with new features and optimized options in PACKMOL. This allows preparing accurate membrane models of thousands of lipids in the context of a VLP within a few hours using a single CPU. Then, the assembly of the VLP system is done within the multiscale framework of the coarse-grained SIRAH force field. Finally, the equilibration protocol provides a system ready for production MD simulations within a few days on broadly accessible GPU resources. The pipeline is applied to study the Zika Virus as a test case for large biomolecular systems. The VLP stabilizes at approximately 0.5 microseconds of MD simulation, reproducing correlations greater than 0.90 against experimental density maps from cryo-electron microscopy. Detailed structural analysis of the protein envelope also shows very good agreement in root mean square deviations and B-factors with the experimental data. The level of details attained shows for the first time a possible role of anionic phospholipids in stabilizing the envelope. Combining an efficient and reliable setup procedure with an accurate coarse-grained force field provides a valuable pipeline for simulating arbitrary viral systems or sub-cellular compartments, paving the way towards whole-cell simulations.
A Guide to Benchmarking Enzymatically Catalysed Reactions: The Importance of Accurate Reference Energies and the Chemical Environment
Authors: Wappett Dominique A. , Goerigk Lars
Published: December 2020

We explore two significant factors on the outcomes of benchmark studies for enzymatically catalysed reactions, namely the level of theory of the benchmarks and the size of the model system used to represent the enzyme active site. For the benchmarks, we compare two potential alternatives to canonical coupled cluster results for situations where CCSD(T) is computationally too demanding: a strategy to estimate finite basis set coupled cluster values and the local-correlation DLPNO-CCSD(T) method at the complete basis set limit. We confirm the high accuracy of DLPNO-CCSD(T) used with tight thresholds. We also show that notable differences can be seen when using both sets of references for a benchmark study, with absolute deviations from the higher quality references generally smaller than those from lowerquality ones as well as changes in the ranking of the assessed methods. For geometries, we test three models for the active site of 4-oxalocrotonate tautomerase: one typical of the QM region that may be used in QM/MM studies, and two smaller variants that neglect the surrounding chemical environment. Benchmarking of 12 density functionals known to perform well on enzymatically catalysed reactions shows inconsistent performance of each method across the three models, contradicting the common idea that small representative systems can be used to accurately assess the applicability of low-level methods for larger biochemical applications. Our findings shall serve as a reminder on the standards that should be adhered to in benchmark studies, and as a guide for future studies, both on enzyme-related and other chemical problems.
Labeling Preferences of Diazirines with Protein Biomolecules
Authors: West Alexander , Muncipinto Giovanni , Wu Hung-Yi , Huang Andrew , Labenski Matthew T. , Woo Christina
Published: December 2020

Diazirines are widely used in photoaffinity labeling (PAL) to trap non-covalent interactions with biomolecules. However, design and interpretation of PAL experiments is challenging without a molecular understanding of the reactivity of diazirines with protein biomolecules. Here, we report a systematic evaluation of the labeling preferences of alkyl and aryl diazirines with individual amino acids, single proteins, and in the whole cell proteome. We find that aryl-fluorodiazirines react primarily through a carbene intermediate, while alkyl diazirines generate a reactive alkyl diazo intermediate on route to the carbene. The generation of a reactive diazo intermediate leads to preferential labeling of acidic amino acids in a pH-dependent manner. From a survey of 32 alkyl diazirine probes, we use this reactivity profile to rationalize why these probes preferentially enrich highly acidic proteins or those embedded in membranes and why probes with a net positive-charge tend to produce higher labeling yields. These results indicate that alkyl diazirines are an especially effective chemistry for surveying the membrane proteome, and will facilitate probe design and interpretation of biomolecular labeling experiments with diazirines.
A Rocking-Chair Proton Battery with Conducting Redox Polymer Active Materials and a Protic Ionic Liquid Electrolyte
Authors: Wang huan , Emanuelsson Rikard , Karlsson Christoffer , Jannasch Patric , Strømme Maria , Sjödin Martin
Published: December 2020

Rechargeable batteries that use redox-active organic compounds are currently considered as an energy storage technology for the future. Conducting redox polymers (CRPs) are organic materials being both electronically conducting and resilient to dissolution. While insolubility is an advantageous property for active battery materials, it complicates the processing necessary for fabricating electrodes, including electrode formulation and layer formation. Here we employ a post-deposition electro-polymerization (PDP) method, which allows for solution-processing to be used for electrode layer formation. The polymerization conditions are optimized and the underlying mechanism is studied with the final aim to produce high performance CRPs as energy storage materials. We show that quinizarin (Qz) and naphthoquinone (NQ) based CRPs can reach their theoretical capacity thorough optimization of the polymerization conditions. Combining the two CRPs, with the Qz-CRP as cathode and the NQ-CRP as anode, and a protic ionic liquid electrolyte, yields a 0.8 V proton rocking-chair battery. The conducting additive-free all-organic proton battery exhibits a capacity of 62 mAh/g and a capacity retention of 80% after 500 cycles using rapid potentiostatic charging and galvanostatic discharge at 4.5 C.
Implicit Solvents for the Polarizable Atomic Multipole AMOEBA Force Field
Authors: Corrigan Rae , Qi Guowei , Thiel Andrew , Lynn Jack , Walker Brandon , Casavant Thomas , Lagardère Louis , Piquemal Jean-Philip , Ponder Jay , Ren Pengyu , Schnieders Michael
Published: December 2020

Computational protein design, ab initio protein/RNA folding, and protein-ligand screening can be too computationally demanding for explicit treatment of solvent. For these applications, implicit solvent offers a compelling alternative, which we describe here for the polarizable atomic multipole AMOEBA force field based on three treatments of continuum electrostatics: numerical solutions to the Poisson-Boltzmann equation (PBE), the domain-decomposition Conductor-like Screening Model (ddCOSMO) approximation to the PBE, and the analytic generalized Kirkwood (GK) approximation. The continuum electrostatic models are combined with a nonpolar estimator based on novel cavitation and dispersion terms. Electrostatic model parameters are numerically optimized using a least squares style target function based on a library of 103 small molecule solvation free energy differences. Mean signed errors for the APBS, ddCOSMO, and GK models are 0.05, 0.00, and 0.00 kcal/mol, respectively, while the mean unsigned errors are 0.70, 0.63, and 0.51 kcal/mol, respectively. Validation of the electrostatic response of the resulting implicit solvents, which are available in the Tinker (or Tinker-HP), OpenMM, and Force Field X software packages, is based on comparisons to explicit solvent simulations for a series of proteins and nucleic acids. Overall, the emergence of performative implicit solvent models for polarizable force fields will open the door to their use for folding and design applications.
New High-Performance Porous Ionic Liquids for Low Pressure CO2 Capture
Authors: Avila Jocasta , Lepre Luiz Fernando , Santini Catherine , Tiano Martin , Denis-Quanquin Sandrine , Szeto Kai Chung , Padua Agilio , Costa Gomes Margarida
Published: December 2020

Porous ionic liquids are non volatile, versatile materials that associate porosity and fluidity. New porous ionic liquids, based on the ZIF-8 metal-organic framework and on phosphonium acetate or levulinate salts, were prepared and show an increased capacity to absorb carbon dioxide at low pressures. Porous suspensions based on phosphonium levulinate ionic liquid absorb reversibly 103% more carbon dioxide per mass than pure ZIF-8 per mass at 1bar and 303K. We show how the rational combination of MOFs with ionic liquids can greatly enhance low pressure CO2 absorption, paving the way toward a new generation of high-performance, readily available liquid materials for effective low pressure carbon capture.
Biomimetic Enterobactin Analogue Mediates Iron-Uptake and Cargo Transport into E. coli and P. aeruginosa
Authors: Zscherp Robert , Coetzee Janetta , Vornweg Johannes , Grunenberg Jörg , herrmann jennifer , müller rolf , Klahn Philipp
Published: December 2020

The design, synthesis and biological evaluation of the artificial enterobactin analogue EntKL and several fluorophore-conjugates thereof are described. EntKL provides an attachment point for cargos such as fluorophores or antimicrobial payloads. Corresponding conjugates are recognized by outer membrane siderophore receptors of Gram-negative pathogens and retain the natural hydrolyzability of the tris-lactone backbone, known to be key for uptake into the cytosol. Initial density-functional theory (DFT) calculations of the free energies of solvation (ΔG(sol)) and relaxed Fe-O force constants of the corresponding [Fe-EntKL]3- complexes indicated a similar iron binding constant compared to natural enterobactin (Ent). The synthesis of EntKL was achieved via an iterative assembly based on a 3-hydroxylysine building block over 14 steps with an overall yield of 3%. A series of growth recovery assays under iron-limiting conditions with Escherichia coli and Pseudomonas aeruginosa mutant strains that are defective in natural siderophore synthesis revealed a potent concentration-dependent growth promoting effect of EntKL similar to natural Ent. Additionally, four cargo-conjugates differing in molecular size were able to restore growth of E. coli indicating an uptake into the cytosol. P. aeruginosa displayed a stronger uptake promiscuity as six different cargo-conjugates were found to restore growth under iron-limiting conditions. Imaging studies utilizing BODIPYFL-conjugates, demonstrated the ability of EntKL to overcome the Gram-negative outer membrane permeability barrier and thus deliver molecular cargos via the bacterial iron transport machinery of E. coli and P. aeruginosa.
Comparison Between Conventional Solvothermal and Aqueous Solution-based Production of UiO-66-NH2: Life Cycle Assessment, Techno-economic Assessment, and Implications for CO2 Capture and Storage
Authors: Luo Hongxi , Cheng Fangwei , Huelsenbeck Luke , Smith Natalie
Published: December 2020

Metal-organic frameworks (MOFs) are a new class of materials that has shown great potential in catalysis, sensing, separations, and carbon capture and storage. Conventionally, MOFs are synthesized at lab-scale using organic solvent-based systems, leading to high environmental burdens and high operating costs, which ultimately hinders the large-scale production and application of MOFs. Aqueous synthesis of MOFs overcomes such difficulty by eliminating the organic solvent, which makes it an environmentalfriendlier and economically-favorable alternative to the current production method. However, further quantitative analysis is required to compare the environmental and economic performances of the two methods. Here, we used life cycle assessment (LCA) coupled with techno-economic analysis (TEA) to evaluate the environmental and economic performances of different UiO-66-NH2 production methods. When the solvothermal method was replaced by the aqueous solution-based method, the LCA and TEA results suggest the environmental burdens and cost of UiO-66-NH2 production were reduced by up to 91% and 84%, respectively. By using aqueous solution-based method, the cradle to gate carbon footprint and production cost of UiO-66-NH2 were estimated to be 43 kg CO2 eq/kg and $15.8/kg, respectively. We further applied our LCA results to reassess the role of UiO-66-NH2 in carbon capture and storage (CCS) and compare its environmental performance with current benchmark (amine-based solvent). Our results show that UiO-66-NH2 could potentially have better environmental performance than the amine-based solvent if the number of regeneration cycles is greater than 1513. This work is the first comprehensive LCA-TEA study that quantifies the substantial environmental and economic benefits of using the aqueous solution-based systems to produce UiO-66-NH2, and the analysis in this work is intended to be a starting point for further systematic studies on the full life-cycle impacts of MOFs.