bluuebunny/crossref_metadata_2025 huggingface dataset:
The natural frequency of a mast with an arbitrary number of panels
Authors: Kirsanov Mikhail N. , Sviridenko Olesya V. , Komerzan Evgeny V.
Published: July 2022

Introduction. The article addresses a spatial model of a statically definable mast truss consisting of four identical planar trusses with a crosswise grid system and a base with four supports at the corners. The authors solve the problem of deriving the analytical dependence between the bottom vibration frequency of the mast truss and the number of panels, mass, linear dimensions of its construction and properties of the material.

Materials and methods. To calculate the values of forces, arising in the rods of a mast truss with an arbitrary number of panels, and analyze the obtained results, the induction method and operators of the Maple computer system for mathematics were used. The problem of deriving the analytical dependence between the bottom frequency of vibrations of the mast truss and its parameters is solved using the Dunkerley method, which generates the bottom estimate of the natural frequency. The rigidity of the truss structure is calculated according to the Maxwell – Mohr formula. To calculate the common members of sequences of coefficients, homogeneous linear recurrent equations are derived and solved in the frequency formula.

Results. A formula is obtained for estimating the first frequency of natural vibrations of a truss. The formula coefficients have the form of polynomials of no higher than the fourth order. The accuracy of the calculation formula, obtained using the Dunkerley method, is estimated by the comparison with the first frequency, obtained through the numerical calculation of the entire spectrum of natural frequencies.

Conclusions. The analysis of the analytical results and their comparison with the numerical ones shows high accuracy of the derived formula. The authors have identified a dependence, whereby an increase in the number of mast truss panels boosts the accuracy of the bottom estimate of the natural frequency.
A full-scale study on the thermal emissivity of concrete and application of its findings to verify ANSYS software package
Authors: Aniskin Nikolai A. , Shaytanov Alexey M.
Published: July 2022

Introduction. One of the most popular and complex areas in the design of massive concrete structures is the analysis of their thermal behaviour and thermal stress state. Hence, we can identify tasks related to the phased construction of massive concrete structures, such as gravity dams, massive foundations, bridge supports, etc. A large number of factors, influencing the thermal process, varying over time and depending, among other things, on temperature, determine the complexity of such tasks. The main factor, determining the thermal behaviour of mass concrete in the process of construction, is the exothermic heating of concrete, depending on the type and amount of cement used, as well as several process specifications. Today, such problems can be best solved using the numerical finite element method, implemented in numerous software products. One of them is ANSYS software package, which is widely used to analyze constructions and structures in respect of a full range of actual loadings and impacts. This paper presents the results of the field studies conducted to obtain the initial parameters and verify the precision of results obtained using mathematical modeling techniques of the ANSYS software package.

Materials and methods. The authors describe a full-scale experiment that entails the concreting of a concrete testing block. During concrete placing and curing, temperature sensors time tested a temperature change inside the block and in the outside air. Also, studies were conducted using the numerical finite element method employed by the ANSYS software package.

Results. The findings of a full-scale experiment were compared with the thermal behaviour analysis made by the ANSYS software package. The comparison has proven highly precise results. The maximum temperature difference at the selected points of the full-scale and numerical models does not exceed 0.6 %.

Conclusions. The ANSYS software package solves complex tasks with high accuracy; it determines the thermal behaviour of massive concrete structures, taking into account the thermal emissivity during cement hydration.
Análisis de política pública del turismo cultural de la ciudad de Pasto mediante el enfoque de redes
Authors: Benítez González Carlos Andrés , Córdoba Segovia Carlos Manuel , García Velasco Isabel Cristina
Published: July 2022

El diseño de políticas públicas requiere reconocer e involucrar a los actores que logran cooperar en la ejecución del accionar público para resolver las problemáticas sociales. Por lo anterior, el objetivo de este artículo es conocer las apreciaciones de los principales agentes que pueden aportar a la construcción de una política pública de turismo cultural en la ciudad de Pasto, para tal efecto, se seleccionó, mediante la técnica de muestreo por conveniencia, a personas representativas de los diferentes grupos de interés que, por su conocimiento, aportes, influencia y experiencia, han contribuido al desarrollo de este sector. En consecuencia, se aplicaron entrevistas semiestructuradas y utilizando el enfoque de redes, método estilado ampliamente en las ciencias sociales, se logró identificar el grado de articulación y jerarquía de los mismos. Finalmente, se destacan como resultados principales la desarticulación entre las autoridades encargadas del desarrollo de la cultura y del turismo, la falta de un Sistema de Información y Medición del Turismo, la pérdida del reconocimiento propio de los habitantes de Pasto por su patrimonio cultural y la ausencia de una política pública que permita agrupar a estos actores y potencializar las iniciativas que realizan alrededor del turismo y la cultura.
Diagnóstico de la innovación en el sector de producción de alimentos y bebidas de Pasto
Authors: Solarte Solarte Claudia Magali , Rivera Vallejo Gloria Alicia , Bolaños Delgado Sandra Lucía , Benavides Pupiales Luis Eduardo
Published: July 2022

El estudio pretende fortalecer las capacidades de innovación del sector de producción de alimentos y bebidas del municipio de Pasto para lograr la reactivación económica de la región; de allí la necesidad de realizar una caracterización de la innovación del sector de producción de alimentos y bebidas del municipio de Pasto.  La investigación se enmarca en el paradigma positivista, con un enfoque cuantitativo, tipo de investigación descriptivo-analítico; para la obtención de los resultados se empleó el software estadístico SPSS.  La población está constituida por 17 empresas del sector de producción de alimentos y bebidas registradas en la Cámara de Comercio de Pasto año 2021, a quienes se les aplicó una encuesta dirigida a los gerentes. Entre los resultados, se encontraron que la mayoría de las empresas presentan la actividad económica 1081 que corresponde a la elaboración de productos de panadería, en su gran mayoría sociedades en comandita por acciones y microempresas no cuentan con un área de innovación. Como conclusiones se obtuvo que las organizaciones no se especializan en procesos de innovación, no existe asignación de recursos, ni personal experto en esta área, por ende, la cultura de innovación es deficiente e incluso consideran que innovar se constituye en un gasto y no una inversión.
Experiencias laborales en el marco de las NFOT informes académicos por actividad profesional de egresadas y egresados de la Licenciatura en Literatura Dramática y Teatro (UNAM)
Authors: Feregrino Basurto María Azucena
Published: July 2022

Este artículo se centra en visibilizar las experiencias críticas sobre el inicio de las trayectorias ocupacionales de egresadas y egresados de la Licenciatura en Literatura Dramática y Teatro (LLDyT), descritas en informes académicos por actividad profesional —una opción específica de titulación en la Universidad Nacional Autónoma de México (UNAM)—. De manera particular, problematiza la relación entre las Nuevas Formas de Organización del Trabajo (NFOT), principalmente basadas en la organización por proyectos, y los altos niveles de flexibilidad y precariedad laboral de la ocupación. La estrategia metodológica se plantea desde la revisión documental de relatos hallados en registros académicos históricos. Como resultado se encontró que el trabajo en equipo, más que un requerimiento de las NFOT, se establece como una forma de resistencia ante las condiciones deplorables de trabajo.
Producción audiovisual experimental con estudiantes de la Universidad de Nariño: análisis del proceso creativo
Authors: Zambrano Aguirre Luis Carlos
Published: July 2022

Pasto es una ciudad artística-artesanal por naturaleza, teniendo en cuenta el entorno creativo por el cual se ve influenciada; por ello, es importante identificar que procesos creativos se desarrollan en los estudiantes en la catedra “VisualizARTE: Expresión Audiovisual del ser” de la Universidad de Nariño al momento de crear videos experimentales, siendo este un espacio para sesgar y diferir las normas establecidas por el cine, donde el fin es únicamente estético y comercial. La experiencia de impartir la cátedra VisualizARTE previamente, muestra que los estudiantes durante los seis meses, fortalecen sus procesos de creación, así mismo, varios estudios apuntan que la inmersión constante en un ámbito de creación a partir del contexto es muy útil para desarrollar los procesos creativos individuales y autónomos. De este modo, se hizo un análisis fenomenológico hermenéutico de las experiencias personales de los estudiantes, para obtener una visión subjetiva del proceso de realización de sus videos experimentales, profundizando en los significados esenciales de las experiencias pedagógicas de la cátedra; proponiendo la identificación de los procesos creativos desarrollados durante la realización de videos experimentales, como aporte a futuras investigaciones enfocadas a la misma temática con estudiantes universitarios.
INHIBITORY EFFECT OF EMPTY PALM FRUIT BUNCHES’ BIO-OILS AGAINST SEED GERMINATION AND SEEDLING GROWTH OF THREE SELECTED SEEDS
Authors: Adesemuyi Mibinuola , Adebayo Matthew , Akinola Adebisi , Adesemuyi Emmanuel , Lajide Labunmi
Published: July 2022

In a search for effective methods for controlling seed germination and growth, bio-oils were produced from pyrolysis of bunches of empty palm fruit at different temperatures. Physicochemical chemical characteristics of the bio-oils were evaluated using standard analytical procedures. Allelopathic activities of the bio-oils were evaluated against three selected seeds (tomatoes, okra and Amaranthus). The percentage germination inhibition was calculated for each seed after 72 h of germination. The yields of the bio-oils are 22.07%, 35.13% and 37.47% at 400 °C, 500 °C, and 600 °C, respectively. The bio-oils are acidic and contain compounds such as phenols, phenol derivatives, alkanes, and organic acids. The results revealed that the empty palm fruit bunches’ bio-oils have inhibitory effects on the three selected seeds. The percentage seed germination decreased with increasing concentration of the bio-oils while the inhibitory effect of the bio-oils on seedling growth increased significantly with increasing concentration of the empty palm fruit bunches’ bio-oils. The bio-oils obtained at different pyrolytic temperatures showed appreciable allelopathic activities.
INTERDISCIPLINARITY IN SCIENTIFIC RESEARCH: THE EMPLOYMENT OF TECHNOLOGICAL TOOLS IN DATA ANALYSIS WITHIN AN INTERDISCIPLINARY CONTEXT
Authors: Almeida Leonardo de França , Mendes Neto Francisco , Vasconcelos Fernandes Rogério
Published: July 2022

This article aims to present the importance of using technologies in data analysis for scientific research in an interdisciplinary context. It is known that technology currently constitutes a tool in common between different areas of knowledge, which makes it an instrument of great relevance for both parties, as it facilitates the researcher to analyze large amounts of information in different areas in a technical, practical and technical way. minimizing the margin of error. These relationships between different areas of knowledge, especially within scientific research, are very important to have a better understanding of a subject under discussion, and to find explanations for such facts and questions. In view of this, to evidence such facts, bibliographical research was carried out as methodological procedures, in which already published works were used as a source, such as: articles, master's dissertation, doctoral thesis and books, to validate/relate in order to present the contributions of several authors on the proposed theme. Finally, the research findings could show that, with the advancement of technology, as discussed in the text, much software with the help of the internet and some electronic devices such as notebooks, tablets, smartphones, among other resources, have been favoring this type of work and providing the speed and precision in obtaining and analyzing data, improving the execution of tasks in an agile, precise and compensatory way.
A palavra na poética de Ronald Duarte
Authors: Dias Borges Carlos Eduardo , Gonzaga Ricardo Maurício , Duarte Ronald , Andrade Santos Josélia
Published: July 2022

Esta entrevista é a primeira do projeto de extensão universitário Performance em Debate, registrado na PROEX-UFES sob o número 1755. Participaram da entrevista com Ronald Duarte: Carlos Eduardo Dias Borges, Ricardo Maurício Gonzaga e a estudante de graduação Josélia Andrade Santos, com o apoio técnico de Magno Buscaroli. A entrevista foi realizada em 17/9/2020 por meio da plataforma webconference.
Balada do corpo solar
Authors: Bonisson Marcos
Published: July 2022

A Balada do Corpo Solar é uma série aberta de fotografias iniciada em 1997 que completa 25 anos em 2022 e segue em andamento.
Cacos de deus, cacos de casa e cacos de recusa
Authors: Da Silva Diambe
Published: July 2022

Este relato acadêmico reflete as noções de metabolismo, coreografia e epidemia (seja a de HIV, nos anos 1980, ou de Covid, nos anos 2020) sobre o trabalho videográfico Einstein Remix, de Diambe da Silva, criado a partir do poema homônimo de Ricardo Aleixo, que é sua matéria prima. Desdobramentos sobre o pensamento implicado da filosofia ubuntu e o conceito de coreopolítica de André Lepecki decorrem deste trabalho, que acaba por criar outros poemas pela prática do erro.
Estratégias estético-políticas para fugir da captura
Authors: Almeida Thigresa
Published: July 2022

Escapar. Fugir. Criar rotas de fuga. Escapulir. Esvair-se. Todas essas são qualidades de corpos dissidentes, corpos que aqui nos interessam sob a perspectiva de criação de zonas fronteiriças que permitam a sua total e plena ação de contraversão dos gêneros. Sob a ótica da antiarte, da não-arte, da arte não intencional e da performance associada às ações estético-políticas, o artigo se apresenta como uma experimentação sobre as questões que atravessam os corpos transvestigeneres.
Plantações , retomadas e colheitas de sonhos
Authors: Lundu JeisiEkê de
Published: July 2022

Nessa empreitada escrita performativa faço um caminho de volta para minha criança, retorno a erê guardada em minha caixinha de sonhos para tratar feridas e reencontrar novas encruzilhadas para lidar com  o necrocapital urbano.  Esse texto nasce da vontade de tramar futuros entendendo que para isso é preciso encontrar na beirada dos barrancos e nos campos, legado de minhas ancestrais as ferramentas necessárias para travar batalhas estelares. o direito ao sonho e ao devaneio, a penumbra, o reencanto, a feitiçaria presente na junção das palavras e no eco dos silêncios.
Situaciones de aprendizaje para la inclusión de la temática ambiental en las clases de química en la secundaria costarricense
Authors: Wendy Villalobos-González  , Kenneth Castillo- Rodríguez
Published: July 2022

El estudio consistió en la elaboración y evaluación de un Taller de Química Ambiental (TQA) dirigido a estudiantes y profesores de Enseñanza de las Ciencias Naturales de la Universidad Estatal  a Distancia de Costa Rica (UNED-CR), con la finalidad de abarcar una serie de situaciones de aprendizaje (SA) para incluir la temática ambiental presente en el Programa de Química de Educación Diversificada del Ministerio de Educación Pública (MEP). El taller se denominó La Química del Ambiente: Una Estrategia para la Inclusión en el Currículo en Secundaria. Las SA incluyeron actividades como: estudios de caso, experimentos caseros, uso de simuladores y proyectos de investigación. El taller se realizó a través de Microsoft Teams® de forma asincrónica, tuvo una duración de dos semanas y contó con una población de 39 participantes. Al finalizar, se aplicó una evaluación mediante un cuestionario tipo encuesta (Forms Office 365®). Se determinó que el taller les facilitó a las personas docentes materiales, herramientas didácticas y situaciones de aprendizaje actualizadas y atractivas para el alumnado con el fin de fomentar habilidades científicas en el aula.
Percepción de los docentes sobre habilidades científicas, conocimientos biológicos y trabajo colaborativo para la promoción de la restauración ecológica en la ECEN-UNED
Authors: María Auxiliadora Zúñiga Amador  , Kenneth Castillo Rodríguez
Published: July 2022

La Universidad Estatal a Distancia (UNED) contempla dentro de sus tareas fortalecer los vínculos entre la enseñanza, la investigación y la extensión. El objetivo del estudio es analizar las percepciones de los docentes en cuanto a procesos académicos relacionados con la restauración ecológica, mediante la aplicación de 16 encuestas a docentes de las carreras Enseñanza de las Ciencias Naturales (PECN) y Manejo de Recursos Naturales (MARENA). El principal resultado es que los docentes encuestados se encuentran desinformados sobre la temática en 59% de los casos y requieren capacitación para potenciar las habilidades científicas, los conocimientos biológicos y el trabajo colaborativo asociado a la restauración ecológica. Lo anterior implica el desarrollo de estrategias didácticas concretas que posibiliten espacios de intercambio para la mejora de los ecosistemas.
Estimación de la carga de combustible presente en el sector El Hacha del Parque Nacional Guanacaste, Costa Rica
Authors: Yarenis Chavarría-Valverde  , Javier Rodríguez Yáñez
Published: July 2022

El Área de Conservación Guanacaste (ACG) en Costa Rica, posee un sector llamado El Hacha, el cual presenta sitios vulnerables a incendios forestales, principalmente por causas antropogénicas. Los sitios presentan un ecosistema de sabana, donde se seleccionaron dos áreas de trabajo, una con afectación y otra sin afectación por incendio. La vegetación arbórea predominante en las áreas son el nance (Byrsonima crassifolia) con un total de 22 individuos y el raspaguacal (Curatella americana) con 131 individuos, mientras que el resto corresponde a herbáceas graminoides (HG). Las HG llegan a alcanzar un grado de cobertura de 95,4 % en el sitio sin quemar, mientras que en el sitio quemado predomina el suelo desnudo en 79,0 %. En cuanto a las propiedades fisicoquímicas, se obtiene que el poder calorífico mayor lo posee el raspaguacal con 17,2 ± 0,6 KJ g-1, seguido por el nance y las HG. En contraposición, las HG tienen la mayor capacidad de perder humedad, pero propagan las llamas a menor velocidad, tanto a nivel horizontal como vertical, pero por más tiempo y con un nivel más bajo de opacidad que los componentes arbóreos. La carga de combustible estimada de ambos sitios se estima en 9149 MJ m-2 en el sitio sin afectación y 1650 MJ m-2 para el sitio afectado por el incendio, siendo las HG el factor de mayor aporte en el sector El Hacha.
EKSPLORASI KERAGAMAN DAN KAJIAN TAKSONOMI PTERIDOPHYTA SEBAGAI POTENSI EKOWISATA DI KAWASAN PUNCAK DULAMAYO KABUPATEN GORONTALO
Authors: Febriyanti Febriyanti
Published: July 2022

English translation. This study aims to find out the diversity of pteridophyta species and their taxonomic studies based on morphological character and analysis of Pteridophyta phenetic relationships in the peak area of Dulamayo Gorontalo Regency through exploration and interview methods. Exploration was conducted to obtain species diversity data and taxonomic data of pteridophyta by identifying and recording all morphological characteristics of pteridophyta (Rhizome, Ptiolus and Lamina) found at the research site. Further identification of the micromorphological character of pteridophyta (Scales and Trioma) was carried out at the Laboratory of Botany Of Biology Faculty of MIPA Gorontalo State University. Determination of pteridophyta diversity index using Sahon Wiener formula while phenetic relationship data is analyzed using gower General Similarity Coefficient formula on MVSP softwere. Based on the results of the study obtained 13 species of nail plants that have morphological character variations with a diversity index of H'= 1,087 which fall into the moderate category, namely species Asplenium trichomane, Phymatosorus scolopendria, Christella parasitica and Nephrolepis cordifolia found in kawsan waterfall UPSA, species Sphaerostephanos unitus, Dicksonia circutaria, Balantium antarcticum, Polybotrya alfredii, Pneumatopteris costata, Dryopteris filix-mas, Cyathea arborea, Nephrolepis biserrate and Sellaginella willdenowii are found in the Arboretum. The genetic distance obtained from the analysis of kinship relationships with the phenotic method is at a coefficient of 66% (0.69) which divides into two main clusters based on morphological character similarities.
OBAT TRADISIONAL PENINGKAT IMUNITAS TUBUH ETNIS KARO, KECAMATAN SINEMBAH TANJUNG MUDA HULU
Authors: BR Tarigan Ayu Natalia , Eddy Nurtjahya  , T Alief Aththorick
Published: July 2022

Tumbuhan berkhasiat obat sudah sejak lama dimanfaatkan oleh masyarakat Etnis Karo, Kecamatan Sinembah Tanjung Muda Hulu sebagai alternatif pencegahan dan penyembuhan penyakit. Penggunaan obat tradisional sebagai alternatif pengobatan lebih banyak dibanding pengobatan secara medis. Penelitian ini bertujuan untuk mengetahui pengetahuan, kepercayaan akan khasiat obat, jenis tumbuhan, bagian tumbuhan yang digunakan, jenis ramuan, cara pengolahan, dan nilai index of cultural significance (ICS) bahan baku yang digunakan. Penelitian ini menggunakan metode wawancara semistruktur untuk responden umum, dan wawancara bebas untuk informan kunci. Dari hasil penelitian, responden dengan kategori usia dewasa hingga tua memiliki pengetahuan dan kepercayaan yang lebih tinggi dalam penggunaan obat tradisional. Sebelas jenis ramuan obat tradisional diperoleh baik yang disajikan secara tunggal dan campuran yang berasal dari 36 jenis tumbuhan dari 21 famili. Bagian tumbuhan paling sering digunakan adalah daun, dan nilai ICS tertinggi (178) adalah jahe. Tumbuhan obat diramu dengan direbus, digiling, atau dikeringkan.
PHYTOPLANKTON DIVERSITY IN THE WATERS OF LAKE SIBILI PALU CITY CENTRAL SULAWESI
Authors: Miswan Miswan , Ranga Sicilia Intan Safitri , Muslim Shaleh Muhammad Fajri Ramadhan , Umrah Umrah
Published: July 2022

The study "Phytoplankton diversity in the waters of Lake Sibili, Palu City, Central Sulawesi" was conducted in September 2021. This study aims to determine phytoplankton diversity in Lake Sibili, Tawaeli District, Palu City, Central Sulawesi. This study uses a method (purposive random sampling). The identification results obtained ten phytoplankton species, namely Bacillaria sp., Schroedeia pointera, Zygnemopsis circumcarinatum, Spirogyra plorifica, Shroedeia anchora, Biddulphia sp., Actinastrum gracillimum, Nitzschia actinastroides, Pleurotaenium nageli, and Schaeroplea annulina. Phytoplankton diversity index from each observation station with a diversity index value (station I) 1,726, (station II) 1,801, (station III) 1,743, (station IV) 1,647 and (station V) 1,728. Based on this, the level of phytoplankton diversity in Lake Sibili, Tawaeli District, Palu City, Central Sulawesi is classified as medium.
PERTUMBUHAN MISELIUM JAMUR TIRAM PUTIH (Pleurotus ostreatus) PADA MEDIA FORMULA JERAMI JAGUNG DAN LIMBAH BIJI KOPI
Authors: Umrah Umrah , Yuniati Eny , Kasim Amiruddin , Kirana Kirana
Published: July 2022

Corn straw and coffee bean waste as a medium and source of nutrients needed for the growth of mycelium white oyster mushroom (P. ostreatus). This research has been carried out at the Microbiology Laboratory, Department of Biology, Faculty of Mathematics and Natural Sciences, Tadulako University. The purpose of this study was to determine the growth of mycelium and the characteristics of white oyster mushroom (P. ostreatus) in the formulation of corn straw and coffee bean waste media. This study was designed in a completely randomized design (CRD), consisting of seven treatments and three replications, namely P1 (100% corn straw powder), P2 (95% corn straw powder + 5% coffee bean waste), P3 (90% corn straw powder + 10% coffee bean waste), P4 (85% corn straw powder + 15% coffee bean waste), P5 (80% corn straw powder + 20% coffee bean waste), P6 (75% corn straw powder + 25% coffee bean waste), P7 (70% sawdust + 20% rice bran + 10% corn flour as a positive control). The results showed that corn straw and coffee waste which were used for growth media of white oyster mushroom mycelium (P.ostreatus) could be used as basic media because mycelium could grow well in all treatments. The growth rate of white oyster mushroom mycelium in P3 treatment enjoyed very fast growth and P6 treatment showed very slow growth. The highest number of colonies was in treatment P3 6.40x1011CFU/grand the lowest number of colonies was in treatment P6 2.66x1011CFU/g. Treatment P3 takes a shorter time to fill the culture bottles, which is 30 days, while P6 takes a longer time to fill the culture bottles, which is 48 days.
Filosofía y Vir(us)tualidad: pensando en contextos de pandemia
Authors: Palacio Muñoz Manuel Darío , Monroy Gutiérrez Einar Iván , Correa García Luis Felipe , Quijano Restrepo Luis Guillermo , Villegas Giraldo Pablo Andrés , López Juan Manuel , Parra Serna Diego Fernando , Rodríguez Cristian Fabián
Published: July 2022

El presente libro es el resultado de una investigación conjunta entre el equipo docente de los programas de filosofía de la UTP (Universidad Tecnológica de Pereira) y de la UNAD (Universidad Nacional Abierta y a Distancia). Así, este volumen es un lugar de encuentro de reflexiones filosóficas desde diferentes perspectivas, que ofrecen una visión amplia de las consecuencias de una “nueva normalidad” en contextos de pandemia. Una confluencia de enfoques diversos permite que este libro sea un referente académico e investigativo en el desarrollo de filosofía aplicada al entorno social, político, económico y académico. A partir del reconocimiento de lo que se pone en juego, con las medidas adoptadas a nivel nacional e internacional ante la crisis por COVID-19, las contribuciones de este libro ofrecen una lectura del fenómeno de la pandemia desde una perspectiva crítica. Por ello, aquí se dan cita revisiones de las estrategias biopolíticas adoptadas por los gobiernos, así como revisiones del lugar de la ética y de la solidaridad. Algunos capítulos abordan el tema de un contractualismo internacional y otros apuestan por un reconocimiento de nuevas “normalidades” y “anormalidades”. Todas estas revisiones críticas permiten un desarrollo del pensamiento, que rompen las ilusiones que bloquean los caminos de un pensar emancipador.
Una reflexión sobre la causa estructural de la pandemia geopolítica y neoliberalismo
Authors: Correa Luis Felipe
Published: July 2022

La crisis planetaria provocada por la COVID-19 tiene su causa estructural en la política de industrialización de las macrogranjas. Contexto socio-ambiental que alimentó la proliferación de enfermedades zoonóticas desconocidas con potencial pandémico. Por ello, el responsable de la actual crisis planetaria es el neoliberalismo y su estrategia de industrialización nociva al hombre y a la naturaleza. Modelo que domina el mundo por los mecanismos de alienación ideológica y colonización cultural, así como por los instrumentos de vigilancia y control social fortalecidos por el desarrollo tecnológico. Creando las condiciones necesarias para la reproducción de las políticas neoliberales y las desigualdades presentes.
“La ciencia” no existe
Authors: Quijano Restrepo Luis Guillermo
Published: July 2022

En esta época pandémica (a causa de la COVID-19), es común hablar de “la ciencia” y de invocarla como salvación o esperanza para la humanidad. Sin embargo, no se evidencia en sus discursos, divulgados incontinentemente por los medios de comunicación, la unidad y autonomía esperada, que permita sobrellevar esta contingencia y dar claridad de lo que ello implica para la humanidad en general. Ello se debe a una presunta ausencia de pensamiento dentro de la comunidad científica, que genera la sospecha de un nuevo gobierno que se sustentaría en los enunciados científicos. Se busca con este artículo no solo reflexionar sobre la ciencia y la cientificidad en relación con las actuales circunstancias pandémicas, sino también advertir de los peligros que representaría una sociedad epistemocrática.
Erotismo y pandemia. Una cita furtiva con la muerte
Authors: Villegas Giraldo Pablo Andrés
Published: July 2022

Este trabajo realiza una lectura del fenómeno erótico a partir de la filosofía, plantean-do una reflexión en torno a la literatura de la peste y la pandemia. Para ello se toman como referentes a los pensadores Georges Bataille, Nicolás Gómez Dávila, Octavio Paz y Byung-Chul Han. Como se pretende rastrear el fenómeno erótico, la primera parte surte el efecto de evidenciar los conceptos claves que fundamentan dicho fenómeno, para en la segunda parte rastrear algunos de esos elementos en las obras: Decamerón, Romeo y Julieta, y El amor en los tiempos del cólera. Concluimos que la pandemia pue-de encerrar nuestros cuerpos, pero jamás podrá confinar nuestras almas.
Europa sitiada el problema de la autonomía moral
Authors: López Juan Manuel
Published: July 2022

Nos pone a prueba el tiempo que afrontamos. Las principales reflexiones sobre la actual pandemia, COVID-19, SARS 2, coronavirus, virus chino o como quiera denominarse políticamente, nos sitúan ante un escenario que los más pesimistas pensadores no tuvieron delante. Día tras día se encuentran ascendentes indicadores de contagio; distribución indiscriminada de muertos a lo largo del mundo en fosas comunes; el reiterado gesto de un último adiós a la distancia en el rito funerario. Más allá del problema biopolítico o conspirativo que el tema ha suscitado, o el énfasis en la venganza de la naturaleza sobre nuestra santificada y depredadora forma de proceder con ella, el presente texto muestra una faceta acerca de uno de los emblemáticos conceptos de la cultura europea, la autonomía en medio de la actual crisis. Una gran parte de la responsabilidad de esta crisis recae en el fracaso de lo que ha sido Europa: siempre un proyecto inacabado e inconcluso, esta vez ejecutado de una manera torpe, avalado por la bien planeada infantilización de sus adultos y el debilitamiento de sus cuerpos, ambos promovidos por el modelo educativo y los espejismos creados en la moderna imagen de mundo. El texto incita, así, a la discusión a partir de la puesta en duda del concepto de solidaridad, un concepto que se ha puesto en la escena de la discusión como salvaguarda de la actual crisis.
Basic cost accounting terminology: An English-German dictionary
Authors: Lueg Rainer , Wobst Janice
Published: July 2022

Cross-country differences in cost accounting philosophies and increasing internationalization are likely to produce linguistic barriers. Moreover, the increasing use of English as a medium of instruction in higher education programs reveals the challenges associated with different cost accounting philosophies particularly. To establish a common understanding of cost accounting terminology, we have created an English-German cost accounting dictionary. We translate all terms using well-established textbooks and the authors’ expertise. This dictionary provides a tool for students and practitioners to study relevant cost accounting terminology. Thereby, the dictionary contributes to the accounting profession and education by creating a common reference frame for communication. In contrast to previous studies, this dictionary focuses on the cost accounting subfield instead of accounting in general, allowing dictionary users to better discriminate disciplinary concepts. Our main conclusion is that the development of such a dictionary is a challenge and requires much effort. Such a dictionary is always bounded by the understanding and interpretation of its developers. Moreover, the dictionary is a snapshot of current cost accounting concepts and will change as new concepts emerge/
INMUNOCAT Study: the impact of molecular diagnosis on immunotherapy prescription in pollen polysensitized patients from Catalonia
Authors: Labrador-Horrillo Moises , Garriga-Baraut Teresa , Tena Mercè , Moncín M.M. San Miguel
Published: July 2022

Background: Recognition of specific allergens triggering immune
response is key for the appropriate prescription of allergen-specific
immunotherapy (SIT). This study aimed at evaluating the impact of using
the commercially available microarray ImmunoCAP
ISAC 112 (Thermo Fisher Scientific) on the etiological diagnosis and SIT
prescription compared to the conventional diagnostic methods in patients
with allergic rhinitis/rhinoconjunctivitis and/or asthma.
Methods: 300 patients with respiratory allergic disease,
sensitized to three or more pollen aeroallergens from different species,
as assessed by skin prick-test (SPT) and specific IgE assays (sIgE),
were included in this multicentric, prospective observational study. SPT
and a blood test were performed to all patients. Total serum IgE, sIgE
(ImmunoCAP ) for allergens found positive in the SPT
and sIgE allergen components (ImmunoCAP ISAC 112)
were measured. Results: According to SPT results, the most
prevalent pollen sensitizers in our population were Olea europaea
followed by grass, Platanus acerifolia and Parietaria
judaica. The molecular diagnosis (MD) revealed Ole e 1 as the most
prevalent pollen sensitizer, followed by Cup a 1, Phl p 1, Cyn d 1, Par
j 2, Pla a 1, 2, and 3 and Phl p 5. Immunotherapy prescription changed,
due to MD testing, in 51% of the cases, with an increase of
prescription of SIT from 39% to 65%. Conclusion: The
identification of the allergen eliciting the respiratory disease is
essential for a correct immunotherapy prescription. The advances in
allergen characterization using methods such as the commercial
microarray ImmunoCAP ISAC 112 can help clinicians
to improve SIT prescription.
Irinotecan dose schedule for the treatment of Ewing sarcoma
Authors: Meyers Paul , Slotkin Emily
Published: July 2022

Background: Irinotecan and temozolmide achieve objective responses in
patients with Ewing sarcoma which recurrences after initial therapy.
Optional dose schedules have not been defined. Procedure: We reviewed
published series of patients treated with irinotecan and temozolomide
for Ewing sarcoma which recurred after initial therapy. We compared
objective response rates for patients who received 5 day irinotecan
treatment schedules to response rates for patients who achieved 10 day
irinotecan treatment schedules. Results: Among 94 patients treated with
a 10 day irinotecan schedule there were 48 objective responses (51%).
Among 218 patients treated with a 5 day irinotecan schedule there were
65 responses (30%). Conclusion: When we use irinotecan to treat Ewing
sarcoma we should administer 10 days of treatment.
Sarcoptic Mange is an Emerging Threat to Biodiversity in the Qinling Mountains in China
Authors: Wu Qiaoxing , Chen Liang , Zhang Qiqi , Jin Xuelin , Tang Liubin , Zhang Xueli , Liu Yuqiang , Li Jun’an , Pei Junfeng , Zhu Qifeng , Jin Shiyu , Zhao Qingxia , Shen Jie , Zhao Zemin , Jin Yipeng , He Hongxuan , Gu Xiangyang , Yang Minghai
Published: July 2022

Sarcoptic mange, a disease caused by the burrowing mite Sarcoptes
scabiei, is globally endemic and an emerging threat to wildlife.
Although many studies have shown that wildlife diseases play key roles
in biodiversity conservation, knowledge about sarcoptic mange is still
insufficient. In this study, we aim to improve the understanding of the
impacts of sarcoptic mange on wildlife populations, the mechanisms
involved in its ecoepidemiology, and the associated risks to public and
ecosystem health by investigating mass death events in gorals and serows
in the Qinling Mountains. We conducted interviews with practitioners and
local people in the central Qinling Mountains. From the same locations,
we collected 24 cutaneous samples from various animals and surveillance
data from infrared cameras. Pathological, parasitological and
microbiological examinations of the samples were performed. Mite-induced
cutaneous lesions, mites and eggs were observed in samples from dead
gorals and one dead serow, but not in other species. Molecular analysis
confirmed the mites to be S. scabiei that originated from rabbits. The
data obtained from the interviews and infrared cameras indicated that
the death of wildlife was related to sarcoptic mange infection and that
there had been a decrease in the goral population since the outbreak of
the disease. We confirmed that sarcoptic mange was the major cause of
the mass death events and may have spread from the western to eastern
Qinling Mountains. Based on our findings, we propose several protection
strategies to help preserve biodiversity in the Qinling Mountains.
A First in man study to Evaluate the Safety, Pharmacokinetics, and Pharmacodynamics of RP7214, a Dihydroorotate Dehydrogenase (DHODH) inhibitor in Healthy Subjects
Authors: Nair Ajit , Barde Prajak , Routhu Kasiviswanath , Viswanadha Srikant , Veeraraghavan Sridhar , Vakkalanka Swaroop
Published: July 2022

RP7214 is a potent and selective inhibitor of human mitochondrial enzyme
dihydroorotate dehydrogenase (DHODH). This paper describes the results
from a Phase 1 study that evaluated safety and pharmacokinetics of
single and multiple ascending doses (SAD and MAD) and the food effect of
RP7214 in healthy subjects. Target engagement of DHODH was also
evaluated. A randomized, double-blind, placebo-controlled trial of
single-dose (100, 200, and 400 mg QD) and multiple doses (200 and 400 mg
BID for 7 days) followed by food effect at a single dose of 200 mg was
conducted. A total of 18 healthy volunteers (HVs) (6 subjects in each of
three cohorts) in the SAD part, 12 (6 subjects each in two cohorts) in
the MAD part, and 12 in the food effect study were enrolled. RP7214 was
well tolerated at all dose levels. None of the subjects reported any
RP7214-related adverse events. RP7214 showed dose-proportional
pharmacokinetics after single and multiple dosing. Steady-state
concentrations were reached within about 3–6 days. The mean plasma
half-life of RP724 at steady-state was approximately 13h. RP7214 showed
accumulation on multiple dosing.. Food did not impact the absorption of
RP7214. RP7214 showed dose-dependent inhibition of DHODH as measured by
analyzing accumulating DHO levels, confirming target engagement. The
rapid absorption and high systemic exposure of RP724 with a favorable
safety profile shows the potential for the development of RP7214 in
SARS-CoV-2 infection and acute myeloid leukemia. (NCT04680429).
Keywords: RP7214, dihydroorotate dehydrogenase, SAD, MAD, HV
Reply re: Periocular Anomalies in Freeman-Sheldon Syndrome
Authors: Poling Mikaela I , Dufresne Craig R
Published: July 2022

In Freeman-Burian syndrome (formerly, Freeman-Sheldon syndrome),
correcting visual obstruction and strabismus, when present, is the
operative priority and is not outweighed by anesthesia challenges;
operative delay risks vision loss and developmental delay.
Optimization of ultrasonic assisted extraction and biological activity of total flavonoids from Ficus Pumila L. using response surface methodology
Authors: wen yao , Mai Xueying
Published: July 2022

To optimize the extraction process and activity detection of total
flavonoids from Ficus Pumila. A Box–Behnken design of response
surface methodology was employed to further optimize ultrasonic-assisted
extraction (UAE) conditions for Ficus Pumila stems total
flavonoids ( FPSTF). The results showed that optimized extraction
conditions were ultrasonic power of 240 W, solvent concentration of
61%, ultrasonic time of 61 min and liquid-solid ratio of 25 mL/g. Under
these conditions, the mean experimental value of extraction yield
(1.07%) was achieved, which was about 2.14 times that of ethanol
leaching extraction. As compared to FPSTF, FPSTF after
purification ( FPSPTF) had higher purity of 11.09%, which was
nearly 4.37 times higher than that of FPSTF (2.54%). As compared
to FPSTF, FPSPTF had higher α-glucosidase and
α-amylase inhibitory activities as well as DPPH· and
ABTS· scavenging activities with an IC
value of 0.005, 0.008, 0.22 and 0.08 mg/mL, which was
6.00, 16.50, 1.68 and 2.50 times higher than that of FPSTF
(0.030, 0.132, 0.37 and 0.20 mg/mL). FPSPTF from F. Pumila
could be considered as multifunctional bioactive ingredients to be used
in anti-hyperglycemic pharmaceutical formulation and antioxidant.
Data-driven coordination of expensive subproblems in enterprise-wide optimization
Authors: Berg Damien van de , Petsagkourakis Panagiotis , Shah Nilay , Rio-Chanona Ehecatl Del
Published: July 2022

While decomposition techniques in mathematical programming are usually
designed for numerical efficiency, coordination problems within
enterprise-wide optimization are often limited by organizational rather
than numerical considerations. We propose a ‘data-driven’ coordination
framework which manages to recover the same optimum as the equivalent
centralized formulation while allowing coordinating agents to retain
autonomy, privacy, and flexibility over their own objectives,
constraints, and variables. This approach updates the coordinated, or
shared, variables based on derivative-free optimization (DFO) using only
coordinated variables to agent-level optimal subproblem evaluation
‘data’. We compare the performance of our framework using different DFO
solvers (CUATRO, Py-BOBYQA, DIRECT-L, GPyOpt) against conventional
distributed optimization (ADMM) on three case studies: collaborative
learning, facility location, and multi-objective blending. We show that
in low-dimensional and nonconvex subproblems, the
exploration-exploitation trade-offs of DFO solvers can be leveraged to
converge faster and to a better solution than in distributed
optimization
Development and Assessment of Bioactive Coatings for the Prevention of Recurrent Caries Around Resin Composite Restorations
Authors: Firoozmand LM , Alania Y , Bedran-Russo AK
Published: July 2022

Objective

To develop hydrophilic resin-based surface coatings containing bioactive agents (proanthocyanidins from Vitis vinifera and calcium silicate) and assess their protective role at the dentin and enamel margins of cervical restorations against demineralization under simulated conditions of high and low caries activity.

Methods

Suboptimal resin composite restorations were placed on cervical cavity preparations on buccal and lingual surfaces of thirty-two molars after a contamination protocol. Groups were divided according to the resin-based coatings (n=8): resin without bioactive (C), resin containing 2% enriched Vitis Vinifera (VVE), and resin coat containing 10% calcium silicate (CaSi). The control group did not receive a resin (NC). To simulate a hydrolyticenzymatic degradation, specimens were subjected to 2-month storage followed by incubation in esterase at 37°C for 8 days. Afterwards, recurrent caries was induced using a pH-proteolytic model on half of the specimens to simulate high caries activity, and the other half remained in simulated body fluid (SBF). Measurements of cross-section microhardness (KHN) and infiltration with rhodamine-B assessed the micropermeability (MP), the extent of demineralization (ED), and the demineralization area (DA). Data were analyzed using analysis of variance (ANOVA) and post-hoc tests (α=0.05).

Results

VVE and CaSi presented higher cross-sectional KHN values for enamel and dentin (p<0.001). The bioactive coatings resulted in lower MP, ED, and DA compared to NC (p<0.005) in enamel and dentin. CaSi coating preserved the enamel from demineralization (p=0.160).

Conclusion

The application of bioactive coatings represents a potential strategy to protect the enamel-dentin margins of resin restorations.
A “Cátedra por Nariño” na Colômbia
Authors: Girón Daisy Johana Fernández , Felício Helena Maria dos Santos
Published: July 2022

Neste artigo, analisa-se o desenvolvimento da “Cátedra por Nariño” implementada nos anos de 1980 no Departamento de Nariño, Colômbia, a partir dos participantes da mesma. Utilizaram-se como referenciais teóricos autores como: Shirley Grundy, Paulo Freire, Henry Giroux; dentre outros. Para isto, nesta pesquisa qualitativa interpretativa, foi feito um estudo bibliográfico acerca do objeto de estudo, bem como a realização de entrevistas com alguns professores envolvidos neste processo curricular. Como resultados deste trabalho se construiu como foi o surgimento da “Cátedra por Nariño”, seu desenvolvimento, a conexão da proposta curricular alternativa com a lutas sociais da época, a expansão do projeto dentro de Nariño, e a maneira como finalizou.
A Prova Brasil na ótica das crianças
Authors: Santos Karla de Oliveira , Pizzi Laura Cristina Vieira
Published: July 2022

As reformas educacionais em curso desde a década de 1990 promoveram mudanças estruturais, principalmente com ênfase e intensificação na política de avaliações em larga escala. As escolas e o professor exercem um papel primordial no processo de condução das crianças que realizam as provas, para que as instituições alcancem as metas da qualidade educacional estabelecida pelas políticas. Neste trabalho, apresentaremos dados de uma pesquisa desenvolvida com a participação das crianças dos 5º anos do Ensino Fundamental de uma escola pública do município de São Miguel dos Campos – Alagoas que fazem a Prova Brasil. A investigação possui uma abordagem qualitativa, a partir do Estudo de Caso e da Análise do Discurso de Michel Foucault, buscando observar o poder pastoral e que tipo de tecnologias são mobilizadas institucionalmente e o papel docente com as crianças, conduzindo-as para os fins da Prova Brasil.
O ensino de história das diretrizes do estado do Paraná e da Base Nacional Comum Curricular
Authors: Pavan Renata Madureira , Cainelli Marlene Rosa
Published: July 2022

O presente artigo discute o ajustamento estabelecido pelo Referencial Curricular do Paraná (2018) entre as propostas de ensino de História das Diretrizes Curriculares da Educação Básica de História do estado do Paraná (2008) e da Base Nacional Comum Curricular (2018) dos anos finais do ensino fundamental. A análise de conteúdo (BARDIN, 1977) pautou-se nas contribuições teóricas do campo da Educação Histórica e da Teoria da História de Jörn Rüsen e sua Teoria da Aprendizagem Histórica (2012). O entendimento foi de que o RC (2018) buscou dar continuidade ao caminho potente que está sendo construído e referenciado na própria História pelo ensino de História, no estado do Paraná, na contramão da BNCC (2018), em nível nacional, com a proposta de desenvolvimento de competências e habilidades.
Compreensão leitora e desempenho acadêmico no Ensino Médio
Authors: Thornton Alessandra Figueiró , Corso Luciana Vellinho
Published: July 2022

A compreensão leitora é uma habilidade complexa e desafia muitos estudantes. Investigações nessa temática são ainda escassas no Ensino Médio, apesar de fundamentais, pois a falta de domínio da compreensão compromete a aprendizagem do adolescente, dificultando sua ascensão à Educação Superior. Este estudo, fundamentado na Psicologia Cognitiva, teve o objetivo de investigar a relação entre a compreensão leitora (tarefa Cloze) e o desempenho acadêmico (prova de Linguagens do Enem) em 80 alunos do 3º ano do Ensino Médio. Trata-se de um estudo quantitativo, com análise descritiva e inferencial dos dados. Verificaram-se correlações (Spearman) significativas e positivas, de modo que uma melhor compreensão leitora relaciona-se a um melhor desempenho acadêmico. As implicações educacionais sugerem um olhar amplo sobre essa habilidade que requer avaliações múltiplas, intervenções multiníveis, além de políticas educacionais voltadas para o desenvolvimento da compreensão leitora no Ensino Médio.