bluuebunny/crossref_metadata_2025 huggingface dataset:
Evolución de la Unidad Económica Agrícola en la zona núcleo agrícola de la Argentina en el quinquenio 2015 – 2020
Authors: Carlos Porstmann Juan , Carina Mancini , Victorina Rivera Rúa , Rubén Ercoli , Cecilia Vigna , Agustín Wagner
Published: April 2021

El concepto de Unidad Económica Agropecuaria (U.E.A.) se refiere a la superficie trabajada que permite vivir y progresar económicamente a una familia tipo. A  lo largo de los años, y analizando los censos agropecuarios de las últimas décadas, se observa una tendencia, en todo nuestro país, a la concentración de la superficie en un número cada vez menor de empresas agropecuarias. Este fenómeno puede ser explicado a través de la determinación de la U.E.A. El objetivo del trabajo es calcular la U.E.A. de las explotaciones agrícolas de los departamentos del sur de la Provincia de Santa Fe de la zona núcleo y analizar las causas de sus variaciones para la serie 2015/2020. Se emplea el Método de Urbano Fernández que es el utilizado a nivel oficial en la región. Los resultados obtenidos muestran que la superficie promedio de la U.E.A. para el quinquenio es 358,3 ha[1], significativamente superior a la superficie modal del área en estudio (sur de Santa Fe) que fue estimada en 135,4 ha.

 

[1] ha significa hectáreas. Su equivalente en el Sistema Internacional de Unidades (SI) es 10.000 m2
Instrumento para el aprendizaje del movimiento armónico simple
Authors: Beainy Camilo Ernesto Pardo , Caceres Edgar Andres Gutierrez , Quintero Luis Fredy Sosa , Molina Tania Carolina Barrera , Amezquita Oscar Fernando Camargo
Published: April 2021

La enseñanza de la física en las instituciones educativas, es una de las que más evidencia mortalidad y sentimientos de dificultad en los estudiantes, es considerada como una asignatura teórico práctica, pero afronta la dificultad de que los ejercicios realizados en los laboratorios, pueden ser repetitivos en los diferentes niveles de formación y no se han incorporados los diferentes desarrollos tecnológicos que se ofrecen la electrónica y en general con las TIC.

Los estudiantes de los primeros semestres de los programas de ingeniería deben cursar la física mecánica, donde estudian la cinemática de un cuerpo, se desarrollan prácticas de laboratorio del movimiento uniforme, uniformemente acelerado, con dispositivos móviles, que pueden tener algunos elementos tecnológicos como, sensores de fin de curso y en el mejor de los casos, tomar lectura de tiempo, pero en muy pocas ocasiones pueden determinar la variables propias del fenómeno, como es la velocidad y la aceleración en sus diferentes categorías.

Hoy en día el desarrollo de la electrónica, permite desarrollar instrumentos que hagan tareas específicas en la medición de variables en unidades de tiempo que pueden ser más peñas que los microsegundos, en diferentes planos X Y Z de manera independiente, y con la ayuda de la ofimática se pueden unir para determinar el comportamiento de las variables en diferentes dimensiones y de esta forma dar una mayor profundidad al fenómeno analizado

Debido a estas razones, se ha diseñado un instrumento que permita medir las variables del Movimiento Armónico Simple, el dispositivo tienen la potencialidad de registrar al usuario y almacenar los datos obtenidos, para que sean procesados y analizados por el estudiante en unidades menores a la milésimas de segundo en las dimensiones que se le pidan. De esta forma se espera poder  generar un aprendizaje más significativo y disminuir la mortalidad en esta área del conocimiento.
Movimientos sociales y acción colectiva
Authors: López José Salvador Zepeda , Quevedo Enedina Heredia , López Olimpia Jiménez
Published: April 2021

A partir de los años sesenta del siglo XX, en algunas regiones de México se van decantando distintos procesos sociopolíticos que caminan al margen de los cauces institucionales y van trazando líneas de acción más allá de la dinámica partidista y electoral. Motivados, en primera instancia, por un conjunto de demandas económicas, con el paso del tiempo y la falta de soluciones, organizaciones de distinto nivel, se van transformando, para llegar, en la década de los setenta y ochenta, a la conformación de grandes frentes populares de carácter sectorial y territorial. En esos procesos se han perfilado demandas y escenarios de confrontación -con distintas expresiones e intensidades- y en ello se ha dado la irrupción de una variedad de sujetos colectivos: campesinos, organizaciones de comuneros, sindicalizados, colonos, usuarios de servicios, vendedores ambulantes, invariablemente ligados a importantes núcleos políticos estudiantiles, entre universitarios y normalistas, dando lugar a cruciales manifestaciones en distintas regiones del país. Así, veremos la trayectoria de los distintos movimientos sociales en lo que identificamos como la porción noroccidental[1]  del país, enfatizando sobre el estado de Nayarit.

 

[1] La porción noroccidental, para los fines de este trabajo, se ha considerado al conjunto de estados situados en la vertiente del pacífico hacia el norte, entre las que se encuentran Baja California, Baja California Sur, Sonora, Sinaloa, Nayarit, Jalisco, Colima y Michoacán.
Monitoreo de la sucesión de especies vegetales leñosas bajo una plantación de Pinus radiata D. Don, en el parque universitario “Francisco Vivar Castro”, provincia de Loja, Ecuador
Authors: Mendoza Zhofre Aguirre , Nivelo Leonardo González , Díaz Nelson Jaramillo , Tamayo Jaime Peña
Published: April 2021

En los andes del Ecuador existen plantaciones de Pinus radiata y Pinus patula, sembradas entre matorrales, páramos y áreas abiertas; y, se desconoce la sucesión vegetal, sus cambios y desarrollo. Se investigó una plantación de Pinus radiata en la hoya de Loja con el objetivo de caracterizar la composición florística y monitorear la regeneración natural considerando categorías de regeneración: plántulas, brinzales y latizales. Se establecieron 5 parcelas de 20 m x 20 m, se anidaron 5 subparcelas de 5 m x 5 m y 5 subparcelas de 1 m x 1 m. Se midió altura y diámetro basal. Se determinó la sobrevivencia y crecimiento en un periodo de 12 meses; se analizó la influencia de variables ambientales: luminosidad, pendiente, profundidad del suelo horizonte O, sobre la diversidad y abundancia de la regeneración natural. Se identificaron 24 especies, 21 géneros y 22 familias. La mayor diversidad presentan los latizales; las especies con mayor IVI en las tres categorías son: Piper barbatum, Viburnum triphyllum y Frangula granulosa. Los latizales presentan mayor sobrevivencia (99,37 %), seguida por brinzales (87,59 %) y plántulas (82,76 %). El incremento en altura y diámetro es mayor en Frangula granulosa, Clusia latipes, Critoniopsis pycnantha y Alnus acuminata. No existe influencia significativa de los factores ambientales sobre la diversidad y abundancia de la regeneración natural. La regeneración natural encontrada en las condiciones de hábitat de la plantación; demuestra que es factible la recuperación de la vegetación natural y la presencia de un bosque natural cuando desaparezca la plantación forestal.
Compared Lighting of Fluorescent Lamps with that LED devices for optimal habitability of classrooms
Authors: Cruz Oscar Enrique Tang , Yoza Luis Shuseki Yoza , Gutierrez Hernan Oscar Cortez , Vera Ricardo Otilio Verde , Rojas Juan Manuel Pesantes , Tarmeño Eusebio Idelmo Cisneros , Rodriguez Jorge Luis Lozano , Angeles Milagros Rocio Menacho , Cruz John Daniel Tang
Published: April 2021

One of main shortcomings, frequently found, in national university classrooms is their deficient and insufficient lighting, and the quality of the devices that produce it, mostly of the fluorescent type, which are not without significant physiological drawbacks, including their harmful effect on the optic nerve of users, when its application is continuous and long term. This research was limited only to the aspect of sufficient and appropriate lighting of the classroom, moreover, it did so from the perspective of the type of lamp or luminaire most convenient for the optimal lighting of the UNALM classrooms, according to the current state of lighting technology, identified the factors that make it possible to maximize the degree of pedagogical habitability of the UNALM classrooms, and also minimization of their environmental impact and their concomitant energy cost.
Aplicación “UDAFORMIN” para la determinación del tipo de fortificación minera
Authors: Calle Patricio Feijoo , León Adrián Bravo , Calle Nicolás Escandón
Published: April 2021

En minería, como túneles y taludes, para la evaluación del tipo de fortificación, los parámetros importantes que se deben introducir, para el cálculo de la misma, deben pasar por un proceso de análisis, que muchas veces puede ocasionar, por la falta de experiencia, errores de apreciación y aproximación. Esta caracterización es de importancia para la seguridad de los trabajadores. Por esta razón se vio importante preparar una aplicación en Visual Basic, la cual permita, solamente con la introducción de los parámetros iniciales, como la resistencia a la compresión, Rock Quality Designation (RQD), bloque típico, condiciones de fracturas, agua subterránea, etc. y en función de la programación establecida, encontrar resultados de Rock Mass Rating (RMR), Calidad de la Roca (Índice Q), Tiempo de Auto sostenimiento y Tipo de Fortificación necesaria.
“Procedimiento para el diseño de escalas de medición e indicadores de control de la gestión de las competencias de procesos clave”
Authors: Pino Eulalia M. Villa González Del , Murguía Ramón A. Pons , Villa Yanko Bermùdez , Olivera Harold Alexis Pérez
Published: April 2021

La gestión de competencias de procesos clave de las organizaciones, como parte del Enfoque Basado en Competencias (EBC), es un camino poco explorado actualmente, aunque constituye una perspectiva que les permite desarrollar ventajas competitivas sostenibles en la creación de valor, para los clientes e implicados.

Por lo anterior, el presente trabajo se ha propuesto la aplicación de un procedimiento para mejorar el control de la gestión de las competencias de procesos clave, bajo los enfoques de Gestión por competencias y de procesos. Como parte de una investigación de mayor cobertura, en este trabajo se obtiene la validación del procedimiento en un proceso clave priorizado (Selección e integración del Recurso Humano). 

En la integración de postulados universales acerca de la EBC, la gestión por procesos, y el control de gestión, radica su valor teórico; su utilidad metodológica, en el desarrollo sistémico de herramientas y técnicas de diversos enfoques de gestión ya referidos, que facilitan su aplicación; sus valores práctico y social se ponen de manifiesto en su contribución a la gestión integrada de las competencias en sus tres niveles: organizacional, de procesos y profesional. Su valor económico radica en el mejoramiento de la eficacia y efectividad validada durante su aplicación.
Detección de Amastigotes de Leishmania spp por frotis de Sangre Periférica en un adulto en Asunción, Paraguay. Reporte de caso
Authors: Astigarraga María José Tintel
Published: April 2021

Las leishmaniasis son enfermedades de transmisión vectorial e integran el grupo de las enfermedades infecciosas desatendidas, presentan una amplia distribución global y la mayoría de los casos ocurren en África, Asia y las Américas.

Este trabajo describe la detección de Amastigotes de Leishmania spp por frotis de Sangre Periférica en un adulto en Asunción- Paraguay. Tal abordaje resalta la posibilidad de diagnosticar la enfermedad en fase aguda, incluso antes de titulación de anticuerpos por un método sencillo y menos invasivo
Role of Tax-Knowledge in Building Tax-Intention: An application on TAM Model
Authors: Younus Sabah , Ahmad Saeed , Liaquat Malka , Malik Samra
Published: April 2021

This study explores the role of Tax-knowledge on building affirmative attitude towards taxes, by incorporating the Technology acceptance model (TAM). TAM model established the fact that intention can be developed if attitude is foster by developing perceived usefulness and perceived ease of use in user mind, also it indicates the role if external factor in developing perceived ese of use and perceived usefulness. This article based on the fact narrated above uses Tax-knowledge as an external factor. Tax-knowledge is being observed by further 3 dimensions. General Knowledge, Legal Knowledge and Technical Knowledge. The data for this research article was collected from the owners of small business firms operational in Punjab, Multan region. Data was collected using questionnaire/survey method and was analysed using PLS-Smart. The results showed that general knowledge does not have impact on tax-compliance intention. Whereas, legal knowledge and technical knowledge demonstrate higher B-coefficients for both direct and indirect relationship. Thus, this study concludes that by enhancing legal and technical knowledge regarding taxes, individual’s tax-compliance intention can be magnified.
Relational Practice in Multilingual Peer Discourse: Talk as a Marker of Gender Identity
Authors: Faiz Rabia , Azher Musarrat , Tehseem Tazanfal
Published: April 2021

This paper examines relational practice in multilingual peer discourse to inspect the distinct identity patterns of the male and the female participants involved in gender dynamics. There is  a growing impetus of discourse studies as an emerging area of sociolinguistic and ethno methodological research. In this paper, talk as a marker of gender identity is explored in the light of the theoretical framework suggested by Holmes (2006) who studies the different relational strategies of male and female interlocutors in workplace environment. In the current study, conversations of six male and female postgraduate students of English language at Sargodha University, Pakistan are recorded and transcribed to see how the participants create team as a relational practice using gender specific norms via talk. The study has found that the males create team through humor in discourse while females tilt towards small talk and frequent verbal gestures of approval. Moreover, masculinities and femininities of the peers are manifested in their style and function of the conversations. The study is significant because it is going to lay a foundation for the study and exploration of gender integrated conversations in multilingual context in Pakistani English and other varieties spoken in casual talk in Pakistan.
Search for Employability Skills: Employers, Novice Workers and HEC Approved Curriculum of BS Economics: A Qualitative Analysis
Authors: Akhtar Muhammad , Kashif Najam-ul-
Published: April 2021

Universities are imprving their policies and curriculum to meet the changing needs of job market.  At the same time the employers look complaining about the skills and the characteristics a graduate comes with for employment. Considering this, underlying research investigates the glimpses of development of employability skills in curriculum of discipline of economics implemented in higher education institutions of province of Punjab. For the purpose of fulfillment of  the aim of study, this research adopted the qualitative research design. The proposed study has explored, by content analysis, role of higher education institutions, and curriculum of economics to address  development of employability skills in graduates in universities. By using qualitative interpretive design, sub themes were sorted out followed by broader themes. Broader themes  emerged from sub themes. The study explored that regarding development of  most of the skills, the curriculum of economics had suitable content . Moreover curriculum has enough content to meet educational needs of students with diversity. A few needs of students regarding employability skills remained unfulfilled. The study recommended for teachers to have increased understanding of students needs to practice good  pedagogy and revise curriculum  to fulfill their academic needs as well as to increase the employability skills  by universities in Pakistan.
The Role of Institutional Quality in Trade-Growth Nexus: The Case of Emerging Economies
Authors: Rehman Muhammad Atiq-ur- , Rehman Hafeez-ur- , Farooq Fatima , Bashir Furrukh
Published: April 2021

This study aims at investigating the relationship between trade openness and economic growth after incorporating the role of institutions. Generalized method of moments (GMM) system technique is applied by using data of 17 major emerging market economies (EMEs) for the period 1995-2018. The empirical evidence suggests that trade liberalization affects economic growth positively and significantly while institutions play a supportive role in this regard. The interaction terms are also generated to test the impact of the institutional environment on the trade-growth relationship. The empirical results are robust to various specifications, confirming the positive role of institutions in trade- growth nexus. The countries should develop a conducive institutional and political environment to ensure the beneficial growth effects of trade liberalization policy.
Family Literacy and Revitalization of Islamic Values In Indonesia
Authors: Nugraha Tubagus Chaeru , Amalia Rosaria Mita , Lukman Fahmy , Cristiana Davidescu
Published: April 2021

The industrial revolution 4.0 disrupts the technology field and other fields, such as law, economics, and society, namely the deprivation of human values and religion. One of the steps to overcome the disruption era is the revitalization of Islamic values, given that the majority of Indonesia's population is Muslim. Islamic values ​​are fundamentally built in the family as the smallest social structure of society. Therefore, this study aims to describe the strategy of the revitalization of Islamic values ​​in the family. To achieve this goal, a descriptive analysis method is used. To obtain accurate results, this study was conducted in three steps. First, the provision of data with the method of conversation with questionnaire techniques about Islamic values ​​in the family which one of the members is the student. Second, the analytical method used is the eclectic SWAT-functional method. Using SWAT-analysis as one of the methods, the strengths, weaknesses, threats, and challenges of the family to revitalize Islamic values ​​in the era of disruption can be mapped, while using the functional analysis, it can be given the principles of Islamic families. Then, the analyzed data is compiled as a strategy to revitalize Islamic values ​​in the family. Third, the presentation of data informally, namely providing a straightforward explanation of optimizing Strengths-opportunities and strategies to overcome weaknesses (weakness-threats) to revitalize Islamic values ​​in the family. The results of the study were found two types of Indonesian families based on the eight family functions in the Qur'an. Type-A, a good family and strong, namely the fulfillment of family functions between 70% to 90%. The type-B family is not good and not strong because religion and education are not good. This research implies that a strategy is needed to optimize the value of Islamic values in the type A family and strengthen the religiosity function and educational function in the type B family.
Extracellular vesicles as gold mine for new diagnostic and therapeutic approaches in medicine
Authors: Holdenrieder Stefan
Published: April 2021

Extracellular vesicles (EVs) are a heterogeneous group of subcellular particles shed from cells of origin by diverse mechanisms. They carry specific information and are responsible for efficient intercellular communication that is highly important in many physiological processes as well as for the pathogenesis and progression of several diseases. Their unique properties offer the opportunity to use them also for the delivery of therapeutic drugs. When released into the blood or other bodily fluids they serve as sensitive liquid profiling biomarkers in many dispositions. For future use in diagnostic settings, further efforts are required for better standardization of the methods as well as the analytical, pre-analytical and clinical validation of the markers.
Isolation and characterization of extracellular vesicles
Authors: Fricke Fabia , Buschmann Dominik , Pfaffl Michael W.
Published: April 2021

Research into extracellular vesicles (EVs) gained significant traction in the past decade and EVs have been investigated in a wide variety of studies ranging from basic biology to diagnostic and therapeutic applications. Since EVs are secreted by most, if not all, eukaryotic and prokaryotic cells, they have been detected in body fluids as diverse as blood, urine and saliva as well as in cell culture media. In this chapter, we will provide an overview of EV isolation and characterization strategies and highlight their advantages and disadvantages.
From mesenchymal stem cells and stromal cells - from bench to bedside
Authors: Giebel Bernd , Börger Verena , Gimona Mario , Rohde Eva
Published: April 2021

Human mesenchymal stem/stromal cells (MSCs) represent a promising tool in regenerative medicine. Until now, almost one thousand NIH-registered clinical trials investigated their immunomodulatory and pro-regenerative therapeutic potential in various diseases. Despite controversial reports regarding the efficacy of MSC-treatments, MSCs appear to exert their beneficial effects in a paracrine manner rather than by cell replacement. In this context, extracellular vesicles (EVs), such as exosomes and microvesicles, seem to induce the MSCs’ therapeutic effects. Here, we briefly illustrate the potential of MSC-EVs as therapeutic agent of the future.
Erleuchtete Erforschung von biologischen Signalprozessen
Authors: Weber Wilfried , Fischer Alexandra A. M. , Kramer Markus M. , Radziwill Gerald
Published: April 2021

Die molekulare Optogenetik hat zum Ziel, molekulare Prozesse in Zellen durch Lichtsignale zu steuern, indem genetisch kodierte Photorezeptoren an zelluläre Proteine fusioniert werden. Dadurch kann die zelluläre Signalleitung mit einer bisher nicht möglich gewesenen zeitlichen und örtlichen Präzision gesteuert werden. Hierzu wurden in den letzten Jahren zahlreiche Methoden entwickelt und neue Einblicke gewonnen. Beispielsweise konnte durch lichtabhängige Aktivierung des T-Zell-Rezeptors das kinetic proofreading Modell bestätigt werden. Außerdem ermöglichen lichtinduzierbare Cre-Rekombinasen eine noch präzisere Kontrolle über Genmanipulationen. Dieser Übersichtsartikel soll als Inspiration dafür dienen, wie die molekulare Optogenetik in der präklinischen Forschung Anwendung finden kann.
Adequação da terapia nutricional enteral, complicações gastrointestinais e intercorrências em pacientes críticos
Authors: Silva Denise Peixoto , Carvalho Nágila Araújo de , Barbosa Larissa Silva
Published: April 2021

Objetivos: Identificar a adequação calórica e proteica da terapia nutricional enteral (TNE) e avaliar relação com complicações gastrointestinais e intercorrências em pacientes críticos. Método: Trata-se de uma pesquisa observacional, analítica e prospectiva realizada em duas unidades de terapia intensiva de um hospitalpúblico de urgência e emergência. Foi realizado um levantamento de dados demográficos, clínicos e nutricionais de pacientes em uso de terapia nutricional enteral exclusiva durante 15 dias. A adequação calórica e proteica foi definida em duas categorias: ≥80% e ≥100%. Utilizou-se o teste de Shapiro Wilk para análise de normalidade e Teste t e Mann Whitney para comparação das médias de proteína e calorias prescritas e recebidas, assim como a comparação dos dias de inadequação calórica e proteica com significância de 5%. Resultados: Foram avaliados 67 pacientes, dos quais 52,2% e 22,4% alcançaram adequação ≥ 80% e ≥ 100% para calorias, bem como 37,3% e 10,4% para proteína, respectivamente. A obstipação foi a complicação mais presente, seguida por vômito, diarreia e saída de sonda enteral (SE). As variáveis débito de SE >500ml, vômitos, obstrução de SE e interrupção de TNE quando avaliadas com os dias de inadequação de 80 e 100% para calorias e proteínas mostraram-se significativas. Conclusão: Houve inadequação das calorias e proteínas prescritas e recebidas em relação às necessidades estimadas. Os pacientes que apresentaram SE >500ml, vômitos, obstrução de SE e interrupção de TNE tiveram mais dias de inadequação calórica e proteica.
Perfil demográfico e socioeconômico de manipuladores em uma unidade de alimentação e nutrição na cidade de Juiz de Fora- MG
Authors: Azevedo Daniel Inácio Peixoto Domingues de , Tiburcio Rebeca Galhardo , Marinho Bruna Laiza Silva , Binoti Mirella Lima
Published: April 2021

Mudanças decorrentes do processo de industrialização afetaram os costumes e o modo de se alimentar da sociedade, levando a aumento do número de refeições realizadas fora do ambiente domiciliar bem como na quantidade de estabelecimentos produtores de alimentos, e para que isso seja possível, é essencial a presença dos manipuladores de alimentos. O objetivo deste trabalho foi descrever o perfil demográfico e sócio econômico dos manipuladores de alimentos de uma Unidade de Alimentação e Nutrição. Trata-se de estudo transversal realizado na matriz de uma Unidade de Alimentação e Nutrição (UAN), na cidade de Juiz de Fora, Brasil. Foi aplicado um questionário autoadministrado contendo informações demográficas e socioeconômicas. Os dados foram descritos por meio da distribuição de frequências absolutas e relativas. Participaram da pesquisa 81 manipuladores de alimentos, agrupados de acordo com a função que exercem na unidade. Os participantes apresentam idade média de 33,9 anos (±9,5 anos), a maioria pertence ao gênero masculino (61,7%) e reside na cidade de Juiz de Fora (97,5%), 84% apresenta o ensino fundamental e ensino médio; 48,1% é de auxiliar de cozinha; o tempo de profissão (72,8%) e tempo exercido de profissão na empresa (55,6%) apresentam período superior a um ano. A implementação constante e periódica de treinamentos, e incentivo à capacitação são importantes. Além disso, deve-se considerar um gerenciamento de recursos humanos que promova a qualidade de vida e a valorização do indivíduo no ambiente organizacional.
ASPECTOS SOCIAIS, PRÉ E PÓS ROMPIMENTO DA BARRAGEM DE FUNDÃO, NA BACIA DO RIO DOCE, BRASIL
Authors: Gomes Vanielle Aparecida Patrocinio , Jankowsky Mayra , Carvalho Raphaela Martins de , Freitas Rodrigo Randow de
Published: April 2021

A Bacia Hidrográfica do Rio Doce, localizada no sudeste do Brasil possui uma população de 3,5 milhões de habitantes, que em sua maioria depende do rio Doce, considerado um dos rios mais importantes do país. Mas em 2015 este rio foi atingido por um dos maiores desastres socioambientais, o rompimento da barragem de Fundão em Mariana (MG). A população mencionada foi exposta à lama que impactou severamente suas vidas. Com isso, o objetivo é a realização de um estudo bibliométrico (quantitativo e qualitativo), com recorte voltado para os aspectos sociais que envolvem a Bacia do Rio Doce, buscando verificar e descrever as mudanças ocorridas nas publicações antes e depois do desastre. Onde foram analisados 81 artigos que envolvem os aspectos sociais gerais relacionados a Bacia Hidrográfica do Rio Doce. É possível notar que o rompimento da barragem de Fundão impactou o ambiente, a sociedade e o foco das pesquisas que envolvem a bacia. Concluiu-se que as publicações sobre a educação, saúde e impactos sociais passou a ter como foco a realidade dos atingidos, assim como as comunidades isoladas que sofrem até hoje, cinco anos após o desastre, com os resquícios da lama. Destaca-se as obras relacionadas a aspectos sociais gerais, e os impactos sobre as comunidades ribeirinhas, além de discutir sobre os atores envolvidos, como o Estado, empresas, Fundação Renova e atingidos. Não deixando de mencionar a importância das publicações que tratam dos riscos e falhas em barragens, afim de estudar maneiras de evitar e mitigar esses tipos de desastres.
Síndrome de QT largo congénito
Authors: Melgar Quicaño Luis , Chipa Ccasani Fredy
Published: April 2021

Congenital long QT syndrome (LQTS) represents a group of heart diseases of genetic origin characterized by prolongation of the QT interval and an abnormal T wave on the electrocardiogram (ECG). They can have a dominant or recessive expression, the latter associated with sensorineural deafness. In both cases, its clinical presentation is associated with recurrent syncope and sudden death as a consequence of ventricular tachycardia, specifically Torsades de Pointes. Currently they are classified according to the specific genetic defect, being able to compromise around 16 genes and almost 2000 mutations. It should be suspected in individuals with related symptoms, electrocardiographic findings, and family history. Management is based on the reduction or elimination of symptoms, and concomitantly the prevention of sudden death (SD), in those children with congenital deafness, the management requires the application of the otolaryngologist specialist's own measures. The cardiovascular management implies the modification of lifestyles, mainly the prohibition of competitive sports, including swimming, avoiding exposure to loud sounds or triggers. The medications used include beta-blockers, and more rarely flecainide, ranozaline, and verapamil; invasive management consists of the implantation of a cardioverter defibrillator or even left sympathetic denervation, each with its own risks and benefits. In any of the cases, we must avoid the circumstances that increase the QT interval, as well as carry out the appropriate analysis of the benefits and risks of each possible invasive measure.
ENVIRONMENTAL RESPONSIBILITY AND FIRM FINANCIAL PERFORMANCE: EVIDENCE FROM INTERNATIONAL OIL COMPANIES IN NIGER DELTA
Authors: Ikponmwosa Nosakhare , Osaremwinda Darlington Ogbeide
Published: April 2021

This study examines the relationship between environmental responsibility and financial performance of international oil companies in Niger Delta region of Nigeria. In pursuance of this, a sample of twelve (12) international oil firms was used for the study. Secondary data were obtained from the audited annual financial reports of the selected companies and Federal Ministry of Environment covering the period of 2009 to 2018. The data were analysed using descriptive statistics, correlation analysis, panel causality test and fixed effect, selected as the appropriate strategy after using the Hausman test. Based on the data analysis, the study reveals that there is a bi-directional relationship between environmental responsibility and firms’ financial performance. The study further reveals that there is a positive relationship between environmental responsibility and firms’ financial performance. When environmental responsibility interacts with corporate governance, the impact is found to have a significant positive relationship with firms’ financial performance. The study also finds that growth opportunities and firm size are positively and significantly related to firms’ financial performance. Based on the findings, the study recommends effective regulation, strong institutional mechanism and good corporate governance structures to enforce or engender environmental sustainability and compel firms to adopt the culture/strategy of sustainable finance. Such strategy will alleviate the curse of dependency and poverty that comes with the destruction of the environment and the means of sustenance of the people in oil producing communities.
ECONOMIC GLOBALIZATION BETWEEN EXPANSION AND LIMITS. SOME CONCEPTUAL CONSIDERATIONS
Authors: Postelnicu Catalin
Published: April 2021

This article tries to answer to the question if the actual wave of globalization may be considered viable under the conditions of increasing inequalities, poverty, environmental degradation, behavioral rules of international markets and other important factors. The author considers that the last wave of globalization cannot be fully feasible on the long run, based upon several arguments offered by the specialized studies in the field and from important data evidence reported by some international economic organizations. By definition, the globalization of the economy reflects a reality that has various meanings. Being focused on the free movement of goods and capital, this phenomenon does not necessarily imply a political globalization, although it cannot be completely detached from this field. That is why, from the beginning, it has offered the possibility to large multinational corporations to operate everywhere in the world, thanks to the unprecedented development of transport and communications that have reduced material production costs and permitted companies to be in close and permanent contact. Moreover, the author tries to demonstrate that contemporary economic globalization, in the same respect, is less integrated and interconnected, therefore more limited, than many could realize. Those limits influence important aspects of economic life and especially the economic environments in different countries, regardless of the characteristics and level of development. Factors such as economic gaps between nations, poverty and inequality, international migration and the new protectionism could, and most probably will, have an important impact upon the shape and pace of the economic globalization phenomenon. Realities such as different economic standards for North and South, fragmentary character of protectionism, intense fluctuations of international remittances remain as essential arguments supporting this idea.
OUTWARD HABITS AND ENVIRONMENTAL QUALITY IN AN OVERLAPPING GENERATIONS MODEL
Authors: Safi Fatma
Published: April 2021

Outward habit formation affects consumption decisions. Since consumption displays a negative environmental externality, outward habits has as well an (adverse) effect on the environment. This research paper centers around the theoretical linkage between the combination of both externalities (environmental deterioration and outward habits). The objective of this study is to examine the impacts of outward habits on the state of the environment in the context of an overlapping generations economy. In our study, environmental quality is a public good negatively aﬀected by consumption activity and positively aﬀected by maintenance investment. With outward habit formation, the build-up level of average past consumption in the economy at large influences the current utility of an individual consumer. Thus, individuals draw utility not only from their own level of current consumption, but also from its level relative to the average consumption in the economy. How does outward habit influence the state of the environment? We analyze this question using an overlapping generations model with outward habit and environmental quality in the utility function. In steady state equilibrium allocation, we show that whether outward habits are destructive to the environment depends on the degrees of outward habit formation and the size of the economy.
Ambiguous Things: Interview with Jason Fulford
Authors: Djukić Emina , Rauch Peter , Fulford Jason
Published: April 2021

Jason Fulford is a photographer who thinks and works like a poet: mixing thinking and feeling, things clear and vague, piling the contents only to eventually cut them to the most essential pieces, and expressing himself in an almost game form only to code the message to be appreciated on different levels. In his art, Fulford explores different ways to express the paradigms, paradoxes, unlikely proximities, and whatever he finds fascinating. When approached directly, he describes his work as “I take pictures of all sort of things and then re-contextualise them.” In a rather scholarly way, we would describe him as a refined formalist whose work is set to send a message. In his interview with Emina Djukić and Peter Rauch, Fulford delves into his bookmaking process, explaining the underlying method of his creative agenda, the process that starts the bookmaking process, the difference in relation between images and text in his books, the specifics of working with images and text simultaneously, the different roles of text and images, and the use of images to transcend into something meaningful.

Keywords: photobook, editing process, visual storytelling, artistic ambiguity, bookmaking
Tigre en Papier
Authors: Teodorescu Sibi Bogdan
Published: April 2021

I started Tigre en Papier to set a small business, but it gradually became more of an artistic project in the period when hand-made products spread. Soon, I learned that I did not have the nature for that kind of job as I am rather liable to experiment and changes. The name of the project was picked haphazardly and means “seemingly dangerous”; the origin of the expression is supposedly Chinese, but I preferred the stylish vibration of its French translation. From fashion to installation, Tigre en Papier traverses a multitude of mediums, through which it expresses ideas such as ephemerality, identity, or deception. In many of my pictures, I arrange juxtapositions, reinterpretations of pretty well-known subjects, and various intersections.
Votos
Authors: Villevieille Lia
Published: April 2021

An ex-voto is a votive offering to invisible forces, mainly given in fulfilment of a vow after being healed. It often takes form in the mold of the wounded member, a print that has been directly in contact with the body of the helped. This cyanotype was made with a radiography of my sick lungs, and plants I found dead in an exploited forest. In this photograph, I link the wounded wilderness – the French call forests “Earth lungs” – with my wounded lungs. Since Magic involves using analogies to weave links between a representation and its object in order to affect it, what kind of magic system is invoked when we summon action with contact prints? I tied this photograph to the terrible arsons devastating Amazonia, and more recently Australia, echoing with the disastrous impacts of global changes on the fragile balance of Earth life.
Verfünfungseffekt: Delving into the Enchanted World of Fivefold-portraits and Self-partitioning
Authors: Brečević Geska Helena , Brečević Robert
Published: April 2021

Discovered during a media-archeological investigation into optical illusions, trick photography, and discarded memorabilia, the photo-multigraph technique opened the door to an enchanted world of cloned appearances orbiting in a self-reflective solar system. Shapeshifting into our preferred artistic medium, this turn-of-the-century photographic technique becomes the video-multigraph. It is bizarrely noteworthy that self-isolation would become not only the subject of the piece, but also – due to the unforeseen spread of a recently mutated virus – the prevailing circumstances under which the work was to be completed. In Verfünfungseffekt, we use the medium of video to create a kaleidoscopic portrait-in-motion where the perspective-shifting shards of ego are recorded in a synchronized performance of solipsist intersubjectivity. The video-multigraph allows for the compositing of tiny offsets in time-shifting delays applied to one, or several, of the mirrored selves – shattering the cloned perfection, as well as the conformity, of the multiple presences. This optical illusion necessitates reflection on how media alters our perceptions of time and space; it thereby arouses wonder about our place in existence.

Keywords: Photo-multigraph, fivefold-portrait, mirror photography, video-multigraph, crisis of presence
Phương pháp xây dựng lại tổ chức từ điểm “không”
Authors: Hoang Thi Dao  , Hoang Thi Phuong  , Dao Minh Phuong
Published: April 2021

Để ứng phó với sự thay đổi về nhu cầu thị trường, sự phát triển của công nghệ, xu hướng chuyển dịch năng lượng, dịch bệnh Covid-19…, các công ty dầu khí đang phải thay đổi chiến lược và xây dựng lại tổ chức theo hướng triệt để, đạt hiệu quả và tăng khả năng thích ứng. Bài báo giới thiệu phương pháp tiếp cận mới đang được các doanh nghiệp trên thế giới nghiên cứu áp dụng là xây dựng lại tổ chức bắt đầu từ điểm không (Zero-based organization, ZBO). Phương pháp này có thể tạo ra sự khác biệt thực sự về hoạt động và cách thức làm việc theo hướng đơn giản, tinh gọn, trọng tâm, linh hoạt và hiệu quả hơn, tăng khả năng cạnh tranh và phát triển bền vững.
Componentes del rendimiento de frijol negro en diferentes fechas de siembra durante ciclo otoño-invierno en el norte de Veracruz, México
Authors: Rodríguez Rodríguez José Raúl , López Salinas Ernesto , Tosquy Valle Oscar H.
Published: April 2021

La fecha de siembra influye en las condiciones que modifican el entorno ambiental del cultivo y altera los procesos fisiológicos (polinización, abscisión de órganos reproductivos, aborto de semillas) y morfológicos (tamaño de hoja, materia seca) cuya expresión final es el rendimiento de grano. Se estableció un ensayo en el Campo Experimental Ixtacuaco del INIFAP, durante el ciclo otoño-invierno 2012-2013, con el objetivo de registrar el rendimiento y sus componentes en la variedad Negro Comapa en diferentes fechas de siembra: 1ª (20 de septiembre), 2ª (27 de septiembre), 3ª (4 de octubre), 4ª (11 de octubre) y 5ª (18 de octubre); se utilizó un diseño experimental en bloques al azar con cuatro repeticiones; la unidad experimental fueron cuatro surcos de 5 m de longitud, separados a 0,60 m, teniendo como parcela útil los dos surcos centrales. Se registraron el número de plantas cosechadas, vainas por planta, granos por vaina; peso de 100 granos (g) y rendimiento de grano (kg ha-1). El análisis de varianza realizado con el paquete estadístico de la UANL, Versión 2,5 mostró diferencias significativas entre fechas de siembra; la comparación de medias con la prueba de Diferencia Mínima Significativa (0,05) indicó que las mejores fechas fueron las del 27 de septiembre y 4 de octubre las cuales presentaron mayor producción de grano (1920,5 y 1976,6 kg ha-1), más plantas cosechadas (172,500 y 157,500) y vainas por planta (12,3 y 13,6), respectivamente, bajo condiciones de precipitación total acumulada (372,5 mm), temperatura promedio (23,9 OC) y sin presencia de enfermedades.
PREVALENCE OF RIFAMPICIN-RESISTANT TUBERCULOSIS AND ITS ASSOCIATED FACTORS IN A TERTIARY HEALTH CARE CENTRE, SOUTH-WEST NIGERIA: A 5-YEAR REVIEW
Authors: AR Ojewuyi , AO Odeyemi , AO Odeyemi , AA Olotu , TS Oladipo
Published: April 2021

Background: Tuberculosis is a chronic disease with associated high morbidity and mortality. In recent decades, there has been an increase in resistance to drugs used in the treatment of tuberculosis. This is a major stumbling block in the global fight against tuberculosis. This study was to demonstrate the current prevalence of rifampicinresistant tuberculosis and its associated predisposing factors in a Teaching Hospital in Nigeria. Methods: This was a cross-sectional retrospective study involving 359 consecutive patients with bacteriologically confirmed tuberculosis seen between January 2015 and December 2019. Drug susceptibility testing was performed for rifampicin using GeneXpert MTB/RIF assay. Relevant information was obtained from the clinical records of the patients with the use of a well-structured proforma. The data obtained were analysed using the Statistical Package for Social Sciences (SPSS) version 23.0. Results: There were a total of 359 patients out of which the majority, 235 (65.5%) were males. The mean age was 39.78+16.31 (range 1 - 90 years). A larger percentage of the subjects were new cases of tuberculosis (n=312, 86.9%), 49(13.6%) were HIV positive. The overall prevalence of rifampicin resistance found was 2.5% (n=9/359). There was a significant association between gender (p=0.005) and re-treatment (p=0.003). There was no significant association between rifampicin resistance and other factors including age and HIV. Conclusion: Male gender and patients on re-treatment for tuberculosis are more at risk of developing resistance to rifampicin in our environment. There is a need to ensure compliance with all guidelines in the management of tuberculosis to prevent an increase in drug resistance.
PREVALENCE AND PATTERN OF ADOLESCENT MALNUTRITION IN A COMMUNITY IN SOKOTO, NORTHWESTERN NIGERIA
Authors: T Yusuf , B Jibrin , AH Mohammed , A. Adamu
Published: April 2021

Background: Adolescence is accompanied by increase in nutritional requirements due to the rapid growth and development associated with it. Adolescent nutritional status extends to adulthood and a predisposing factor to childhood malnutrition and non-communicable diseases in adulthood. Objective: To determine the prevalence and pattern of malnutrition among adolescent in a semi-urban community in Sokoto. Materials and Methods: A cross sectional study carried out between January and June, 2018 at Gwuiwa community, Wamakko LGA, Sokoto State. The demographics, weight, height and BMI were documented. Nutritional status was determined using the WHO BMI tables for appropriate age and gender. The socio-economic class of the participants was determined the Ogunlesi's classification. Data were analyzed using the SPSS 22.0. A p-value of <0.05 was considered significant. Results: Respondents' mean age was 12.6 (±2.3) about two-thirds of the respondents were aged 10-13 years. There were 84 (42.4%) males with M:F ratio of 1:1.4. One hundred and eight (54.6%), 63(31.8%) and 27(13.6%) were from lower, middle and upper socio-economic classes respectively. About a third (30.3%) of the respondents were stunted, 33 (16.7%) wasted and 3(1.5%) were overweight. Age (p=0.008) and socio-economic status (p= 0.04) were the correlates of adolescent malnutrition. Conclusion: Undernutrition is commoner among adolescents; with emerging overnutrition in the study area. There is need for concerted efforts on prevention at all levels to reduce its impact on non-communicable diseases and the nutritional status of future generations of our community.
HIPERTENSÃO RESISTENTE: ANÁLISE DOS ESTUDOS PATHWAY 2 E 3
Authors:   Emergências Clínicas da Faculdade de Ciências Médicas de Santos- Universidade Lusíada. SP, Brasil, Focaccia Póvoa Fernando , de Souza Dilma ,   Disciplina de Cardiologia da Faculdade de Medicina da Universidade Federal do Pará, PA, Brasil, Póvoa Rui ,   Disciplina de Cardiologia da Universidade Federal de São Paulo, SP, Brasil.
Published: April 2021

A hipertensão arterial resistente (HAR) é definida quando, apesar do tratamento com pelo menos três medicações anti- -hipertensivas (incluindo um diurético) de diferentes classes a meta pressórica não é alcançada. Nesta sequência de fármacos, por muitos anos se utilizou empiricamente ou baseado em pequenos estudos, a espironolactona. Os estudos Pathway 2 e 3 vieram para corroborar a importância deste quarto fármaco, a espironolactona, como o mais eficaz em termos de potencia anti-hipertensiva, como também explicar os aspectos fisiopatológicos que levam o hipertenso a ficar resistente. Nesta revisão e análise crítica dos fármacos anti-hipertensivos na HAR destacamos os principais mecanismos envolvidos no não controle da pressão e as estratégias para um melhor controle pressórico.
EDITORIAL
Authors: Pereira Valmir
Published: April 2021

Chegamos ao número 2, volume 1 da Revista LibertAção. No contexto da pandemiado Covid-19, do desmonte do Estado Brasileiro, das diversas formas de expressão de ódioveiculadas diariamente em diferentes espaços, seguimos nas diversas tentativas de cumprirnossos compromissos assumidos aqui nessa revista. Em tempos de Ensino Remoto, dedistanciamento social, vamos fortalecendo os diálogos e a esperança de dias melhores numfuturo próximo e promissor.