bluuebunny/crossref_metadata_2025 huggingface dataset:
Interview with Guido Rings: “We need intercultural solidarity if we want to survive and prosper in a world hit by ultranationalism”
Authors: Trinder Stephen
Published: January 2021

As a master’s and Ph.D. student at Anglia Ruskin University in 2011, I recall the central message in lectures given by my eventual Ph.D. supervisor Professor Guido Rings was that we cannot underestimate the enduring strength of the legacy of colonialism in Europe and its influence on shaping contemporary attitudes towards immigration. Indeed, as I was completing my studies, I became increasingly aware of the negative rhetoric towards migrants in politics and right-wing press. In an attempt to placate the far-right of his party and address a growing threat from the UK Independence Party (UKIP), a discourse of ‘othernising’ migrants on the basis of their supposed rejection of ‘Britishness’ from former UK Prime Minister David Cameron in particular caught my attention. The result of this was tightening of immigration regulations, which culminated of course in the now-infamous Brexit vote of 2016. Almost a decade after my graduation, Professor Rings is currently Vice Chair for the Research Executive Agency of the European Commission and continues to work at Anglia Ruskin University at the level of Ph.D. supervisor. He still publishes widely in the field of Migration Studies and his recent high-profile book The Other in Contemporary Migrant Cinema (Routledge, 2016) and editorships in the fields of culture and identity (iMex Interdisciplinario Mexico) argue for increased intercultural solidarity in Europe as well as a strengthening of supranational organizations like the EU and the UN to offset growing nationalism. I got in touch with Professor Rings to find out where he feels Europe stands today with regard to migration and get his comments on the continued rise of nationalism on the continent.
Twitter como objeto de investigación en comunicación de la ciencia
Authors: Denia Elena
Published: January 2021

El servicio de microblogging Twitter, utilizado a la vez como red de información y como red social, es un objeto de investigación emergente con gran potencial para explorar la difusión de la ciencia, pero sobre el que existe cierto desorden teórico. Es por ello que en este artículo se documentan, en primer lugar, una serie de resultados relevantes en estudios de comunicación que se centran en el ecosistema Twitter. En segundo lugar, se sitúa el foco en el ámbito de la comunicación de la ciencia, para el que se exponen trabajos ilustrativos con el fin proporcionar una perspectiva de conjunto sobre los distintos propósitos, enfoques y metodologías utilizadas, en vistas a servir de marco conceptual para trabajos futuros. Además, como resultado de esta compilación, se esclarecen las principales funciones que desempeña Twitter como herramienta de comunicación científica, que dependiendo de los actores involucrados y sus objetivos aparentes se configuran de manera específica e incluso empíricamente observable. Se plantea asimismo una distinción entre dos aproximaciones de investigación; una centrada en la información —los temas científicos de interés público— y otra en los agentes difusores —científicos, periodistas e instituciones—. Por último, se sugieren algunas direcciones de investigación específicas para ulteriores estudios.
Hábitos de uso y consumo de pantallas inteligentes entre niños/as de 7 a 9 años en España
Authors: Núñez-Gómez Patricia , Ortega-Mohedano Félix , Larrañaga-Martínez Kepa
Published: January 2021

Este artículo presenta algunos de los resultados del proyecto de investigación “Niños, Apps, Tablets y Teléfonos Inteligentes de cero a nueve años. Los resultados fueron obtenidos en una encuesta a través de la plataforma Qualtrics —con control de calidad ESOMAR— a 525 niños/as de 7 a 9 años en ciudades de más de 10.000 habitantes y segmentado por CCAA, género, edad y renta familiar percibida. En el artículo, se realiza un análisis específico de variables descriptivas asociadas a género, edad, renta percibida y regiones y se contextualiza el trabajo con un análisis comparativo en España. Una de las conclusiones relevantes del estudio es establecer semejanzas y diferencias entre los patrones detectados en el uso de las pantallas inteligentes en nuestro país. También el abordaje y recomendaciones a la hora de trabajar con niños/as de edad temprana. Se concluye con recomendaciones orientadas a desarrollar un “Observatorio de los hábitos de uso y consumo de la infancia y adolescencia en las pantallas inteligentes”.
Principios mediáticos éticos. Guía para no seguir siendo el troglodita machirulo, blanco y occidental [Reseña]
Authors: Rincón Omar
Published: January 2021

La Guía de transición ecosocial y principios éticos para nuestros medios es un texto que más que leerlo lo debemos tener ahí, a la mano, porque nos es útil para diseñar y producir las mejores historias con conciencia crítica de este mundo que habitamos. Esta guía plantea soluciones desde los sentidos, el lenguaje y las narrativas a la crisis de civilización que nos tocó en destino y de la cual los medios y el periodismo son el signo deforme.
Revista Ágora Universitaria: experiencia innovadora en la docencia de la redacción periodística para mayores de 60 años
Authors: Jurado-Martín Montserrat
Published: January 2021

El sistema educativo abrió la puerta a nuevos perfiles de estudiantes y, además, de los venidos del bachiller, cada vez son más los procedentes de ciclos formativos, mayores de 25, 40 y 55 años, extranjeros, diversidad, etc. Esta heterogeneidad es sin duda un revulsivo para actualizar metodologías docentes más realistas con la diversidad social que exige modos diferentes de aprendizaje. La Universidad Miguel Hernández cuenta desde hace 20 años con las Aulas de la Experiencia para Mayores. En su oferta complementaria se ofrece el curso de redacción periodística que tiene como particularidad la edición de la revista cultural Ágora Universitaria. Este artículo analiza, empleando el estudio de caso, la enseñanza de los contenidos propios de la redacción periodística adaptada al perfil de mayores de 60 años en enseñanza no oficial. Se valoran aspectos de objetivos y contenidos logrados, empleando el método la entrevista y la observación participante. Se valoran como conclusiones el incremento del interés por la profesión, ruptura con los estereotipos y prejuicios asociados, ampliación del conocimiento de las rutinas, distinción de los géneros, gestión y acceso a las fuentes asociadas a estos procesos.
Fórmula para medir el engagement del espectador en YouTube: investigación exploratoria sobre los principales youtubers españoles
Authors: López-Navarrete Alberto-Jesús , Cabrera-Méndez Marga , Díez-Somavilla Rebeca , Calduch-Losa Ángeles
Published: January 2021

Esta investigación exploratoria se centra en la aportación de datos empíricos sobre la interacción en YouTube, aportando una fórmula útil para la medición de la tasa de participación, aplicable mediante los datos públicos de la red social. El objetivo es contribuir con una serie inicial de datos empíricos y los planteamientos generales que impulsen futuras investigaciones relacionadas con YouTube y la interacción del usuario. La aplicación de la fórmula es una oportunidad para realizar estudios comparativos de interacción en YouTube, siempre y cuando se tengan en cuenta las cifras de interactividad —aplauso y conversación— y de impacto, datos que la red social de YouTube permite recoger a cualquier usuario. Los resultados, aplicando la fórmula propuesta sobre los principales youtubers españoles, confirman el aumento de la interacción en el usuario español de YouTube. De forma exploratoria, se observa un mayor compromiso en los videos subidos en 2019 frente a videos más antiguos (2009), esto corrobora que la interactividad real del internauta español ya no tiene una baja implicación con el contenido, como concluyeron Gallardo-Camacho y Jorge-Alonso en 2010 y, que, tal y como vaticinaron, sus conclusiones han sufrido cambios en el tiempo.
Comunicación y publicidad del turismo sostenible en la construcción de la marca ciudad. El caso de la certificación internacional ‘Biosphere Tourism’ en España
Authors: Sidorenko Pavel , Garrido Pablo
Published: January 2021

El presente estudio aborda el análisis de la comunicación del turismo sostenible y su contribución a la construcción de la marca ciudad. Se analiza el caso de ciudades medias españolas adscritas al sello Biosphere, comparando su política de comunicación con los principales centros turísticos del país. Se completa la investigación con una encuesta que valora el grado de conocimiento de las políticas de sostenibilidad medioambiental y su influencia en la elección de un destino. Los resultados obtenidos nos permiten verificar la escasa presencia de los valores medioambientales y sostenibles en la comunicación externa de las ciudades estudiadas.
Métodos y técnicas de investigación utilizados en los estudios sobre comunicación en España
Authors: Gómez-Escalonilla Gloria
Published: January 2021

Se presentan en este artículo los resultados del proyecto “Mapa de la Investigación en Comunicación en las Universidades Españolas de 2007 a 2018” desde la perspectiva de los métodos y las técnicas de investigación que se han utilizado en las principales prácticas científicas realizadas en España en los últimos 10 años: proyectos I+D+i, artículos científicos publicados en revistas indexadas, comunicaciones presentadas en los congresos de la Asociación Española de Investigadores en Comunicación (AE-IC) y tesis doctorales del ámbito de la comunicación. Las conclusiones permiten corroborar la hipótesis de partida, que confirma al análisis de contenido como la técnica más utilizada en las prácticas científicas analizadas del campo de la comunicación, aunque también se utilizan, en menor proporción, otras técnicas de investigación social: análisis del discurso, entrevistas en profundidad y encuestas.
Influenciar para construir las sombras de la realidad. Youtubers e Influencers en la Era Postdigital [Reseña]
Authors: García-Blázquez Eduardo
Published: January 2021

La obra reseñada ofrece una obra asociativa a través de nueve capítulos inéditos, en el que participaron veintidós docentes e investigadores norteamericanos. La publicación ofrece una visión panorámica e histórica del rol del influencer en la implementación de estrategias. Este libro muestra desde distintas vertientes de la comunicación corporativa, el Marketing, la publicidad y las relaciones públicas, como estos influenciadores asumen la responsabilidad de generar reputación, engagement, visibilidad y divulgación de contenidos de un modo más cercano con respecto a los stakeholders a través de diferentes redes sociales. Así mismo, aborda una serie de investigaciones que evidencian el comportamiento y la importancia de los canales disponibles en los entornos social media.
The State of Europeanisation: between Clash and Convergence. A comparison of the media coverage of the 2019 European Elections in seven countries
Authors: Von-Nordheim Gerret , Bettels-Schwabbauer Tina , Di-Salvo Philip , Kennedy Paula , Kiss Kornélia-R. , Kuś Michal , Pinto-Martinho Ana , Stefanikova Sandra , Telo Décio
Published: January 2021

The issue of the Europeanisation of national public spheres is a question as to how a discursive media space can be created within the EU. There are forces of convergence at work, such as networking within the borderless digital space. At the same time, there are counterforces: increasing nationalism and populists who identify ‘Brussels’ as a target for their criticism of elites. The vision of a European public sphere appears to share the same fate as the European project as such; as a result of years of crisis, optimism has given way to disillusion. Using coverage of the 2019 EU elections in seven European countries (a total of 57,943 articles from Germany, Hungary, Italy, Poland, Portugal, the Czech Republic, and the UK), we draw a picture of a heterogeneous EU public. What is particularly clear is that the phenomena of horizontal and vertical Europeanisation require more nuanced interpretations. While a high degree of horizontal Europeanisation indicates convergent and pro-European media coverage (as in the cases of Germany and Portugal), a high degree of vertical Europeanisation may indicate polarised publics or an unfree media landscape (as in the UK and Hungary). From a methodological point of view, the study shows that a combination of computational content analysis and international cooperation between scientists can advance research into the European public.
Las ciudades santuario como una estrategia para situarse en el mundo. Los casos de Valencia y Zaragoza (España)
Authors: Ramos-Antón Rubén , Mercado-Saez María-Teresa
Published: January 2021

Ciudades de todo el mundo se han declarado santuario para refugiados o desplazados, adoptando un posicionamiento rebelde con respecto a las políticas migratorias de administraciones estatales o supranacionales. La presente investigación analiza, a través de la metodología del estudio de caso, las acciones en apoyo a los refugiados planteadas por dos ciudades españolas proclamadas ciudades santuario por sus ayuntamientos: València y Zaragoza, que compartieron cambio político en 2015. Los resultados muestran que estas apuestas dependen de estrategias de partido más que de un verdadero sentido de ciudad. Se ponen en marcha cuando gobiernan partidos políticos con mayor sensibilidad por estas cuestiones, pasando a un segundo plano cuando se producen cambios políticos. A pesar de suponer una táctica eficaz para situar a las ciudades en el mundo, con un discurso autónomo, su implementación se encuentra sometida a las dinámicas políticas locales, lo que las convierte en apuestas políticas frágiles y dificulta que puedan perdurar.
Sentiment Analysis with Machine Learning Methods on Social Media
Authors: Basarslan Muhammet Sinan , Kayaalp Fatih
Published: January 2021

Social media has become an important part of our everyday life due to the widespread use of the Internet. Of the social media services, Twitter is among the most used ones around the world. People share their opinions by writing tweets about numerous subjects, such as politics, sports, economy, etc. Millions of tweets per day create a huge dataset, which drew attention of the data scientists to focus on these data for sentiment analysis. The sentiment analysis focuses to identify the social media posts of users about a specific topic and categorize them as positive, negative or neutral. Thus, the study aims to investigate the effect of types of text representation on the performance of sentiment analysis. In this study, two datasets were used in the experiments. The first one is the user reviews about movies from the IMDB, which has been labeled by Kotzias, and the second one is the Twitter tweets, including the tweets of users about health topic in English in 2019, collected using the Twitter API. The Python programming language was used in the study both for implementing the classification models using the Naïve Bayes (NB), Support Vector Machines (SVM) and Artificial Neural Networks (ANN) algorithms, and for categorizing the sentiments as positive, negative and neutral. The feature extraction from the dataset was performed using Term Frequency-Inverse Document Frequency (TF-IDF) and Word2Vec (W2V) modeling techniques. The success percentages of the classification algorithms were compared at the end. According to the experimental results, Artificial Neural Network had the best accuracy performance in both datasets compared to the others.
Holistic Principle and Motives of Re-Union
Authors: Tóth Zsuzsanna
Published: January 2021

Doktori disszertációm elemzésének tárgya a kortárs brit gyermek- és ifjúsági irodalom meghatározó szerzőjének, Philip Pullmannak His Dark Materials (magyar fordításban Az Úr sötét anyagai) című, sokat vitatott fantasy könyvtrilógiája. Dolgozatomban arra kívánok rámutatni, hogy a trilógia mélyén feltárul az értő olvasó számára egy határozottan érzékelhető vallásosság jelenléte, amely a nyugati szépirodalomból, keresztény teológiából és filozófiából táplálkozik. A disszertáció átfogó célja annak bebizonyítása, hogy a His Dark Materials című trilógiát az un. „re-enchantment” („újra-elvarázsolódás”) jellemzi. A disszertáció elsődleges hipotézise annak bebizonyítása, hogy mivel holisztikus alapelv hatja át a trilógia (narratív) felépítését, az újra-egyesítés vágya Pullman művének magától értetődő témája. A második hipotézisként azt kívánom bebizonyítani, hogy a magától értetődő témája (az újra-egyesítés szándéka) által a His Dark Materials nemcsak a „mainstream” keresztény vallás kritikáját testesíti meg, hanem az alternatív spirituális irányzatok kritikáját is. A disszertáció harmadik hipotézise, hogy bár Pullman fantasy trilógiáját gyakran tekintik műfaj-újító irodalmi alkotásnak, azonban a holizmus újra-elvarázsolt irányelve miatt elkerülhetetlenül megismétli a vallásos fantasy műfajának konvencióit.
The technology of designing plastic windows and their transport from Poland since 1990
Authors: Karaś Rafał
Published: January 2021

PVC window and door constructions are more and more popular in architecture. The profile manufacturing technology, structure and materials are constantly being modified. The Author analyses technological changes that have been implemented within the period of the last 20 years on the basis of Polish market experience, where the technology of PVC window and door production was hardly known, in relation to the largest producer and exporter of such products in the European Union at present. The Author also suggests that the area under investigation demands special care within material engineering, transport and ecology.
Effect of fiber content and their hybridization on bending and torsional strength of hybrid epoxy composites reinforced with carbon and sugar palm fibers
Authors: Nik Baihaqi N. M. Z. , Khalina A. , Mohd Nurazzi N. , Aisyah H. A. , Sapuan S. M. , Ilyas R. A.
Published: January 2021

This study aims to investigate the effect of fiber hybridization of sugar palm yarn fiber with carbon fiber reinforced epoxy composites. In this work, sugar palm yarn composites were reinforced with epoxy at varying fiber loads of 5, 10, 15, and 20 wt % using the hand lay-up process. The hybrid composites were fabricated from two types of fabric: sugar palm yarn of 250 tex and carbon fiber as the reinforcements, and epoxy resin as the matrix. The ratios of 85 : 15 and 80 : 20 were selected for the ratio between the matrix and reinforcement in the hybrid composite. The ratios of 50 : 50 and 60 : 40 were selected for the ratio between sugar palm yarn and carbon fiber. The mechanical properties of the composites were characterized according to the flexural test (ASTM D790) and torsion test (ASTM D5279). It was found that the increasing flexural and torsion properties of the non-hybrid composite at fiber loading of 15 wt % were 7.40% and 75.61%, respectively, compared to other fiber loading composites. For hybrid composites, the experimental results reveal that the highest flexural and torsion properties were achieved at the ratio of 85/15 reinforcement and 60/40 for the fiber ratio of hybrid sugar palm yarn/carbon fiber-reinforced composites. The results from this study suggest that the hybrid composite has a better performance regarding both flexural and torsion properties. The different ratio between matrix and reinforcement has a significant effect on the performance of sugar palm composites. It can be concluded that this type of composite can be utilized for beam, construction applications, and automotive components that demand high flexural strength and high torsional forces.
Selected performance indices for assessment of polypropylene susceptibility to dyeing by pigments of different UV resistance
Authors: Bieliński Marek , Kościuszko Artur , Smolińska Katarzyna
Published: January 2021

This study presents an assessment of the effects of usage time for polypropylene (PP) experimental samples including those dyed with pigments of different UV resistance. A standard double cavity mold was used to create the samples by injection molding. Selected indices were analyzed in terms of color change (UV resistance of pigments), and UV radiation resistance of a PP polymer medium. The experiment revealed a significant impact of the accepted usage time and the type of dye concentrates on the indices characterizing the sample color change (CIELab) and a change in the structure and state of the PP medium surface.
Queer Healing
Authors: Trinah Kakyo Katusiime
Published: January 2021

An assessment of a personal profile was used to write this shared personal take on queer healing. This direction was taken due to limited data on queer movements and healing in Uganda and the reluctance of other LGBTQIA+ identifying people to join in the article research. A personal assessment was carried out to assemble this article that explores a few personal experiences relatable to a wide range of African queer people who are navigating healing.
The fundamental violence of physiotherapy: Emmanuel Levinas’s critique of ontology and its implications for physiotherapy theory and practice
Authors: Maric Filip , Nicholls David
Published: January 2021

The fundamental role of ontology, epistemology, and ethics is widely recognised across the healthcare professions. Yet what is less known in physiotherapy is how ontology and epistemology potentially undermine the ethical intentions of our theories and practices. In this article, we draw on the work of 20th-century philosopher Emmanuel Levinas to highlight this problem. Particularly Levinas’s ethical critique of ontology and the associated notion of thematisation enable us to highlight a violence that takes place in the philosophical foundations of physiotherapy. Using the overarching aims of physiotherapy, the theory and practice of diagnosis, and the notion and enforcing of professional identities as examples, we additionally show how this violence consequently pervades physiotherapy theory and practice. By exploring a range of critical and practical implications, we finally show how an application of Levinas’s critique of ontology additionally opens toward an otherwise physiotherapy grounded in a renewed understanding of self, other, and their relation. With this, we hope to highlight the core value and critical need for a deeper engagement with the work of Levinas in relation to all aspects of physiotherapy, and particularly its understanding and implementation of ethics that is so fundamental to its practice and a cornerstone of physiotherapy education.
La contribución de la universidad para mejorar el trabajo académico de los profesores de posgrado
Authors: Hirsch Adler Ana
Published: January 2021

El artículo forma parte de una investigación de carácter cuantitativo y cualitativo sobre el profesorado de posgrado, que se llevó a cabo en una universidad pública del Centro de México. El proyecto tuvo dos fases: la aplicación de un cuestionario–escala, al que se agregaron preguntas abiertas y un programa de entrevistas, con base en diez interrogantes, que se aplicaron a un total de 34 académicos de dicho nivel de enseñanza. El objetivo del presente trabajo es el análisis de uno de los cuestionamientos de dicho programa de entrevistas: ¿Cómo puede contribuir la universidad para mejorar el trabajo académico de los profesores del posgrado? que recupera lo expresado directamente por los sujetos. En la parte metodológica se presentan dos procedimientos. El primero expone la manera en que se eligieron los 34 entrevistados y el segundo se refiere al proceso por el que se definieron las categorías empíricas con base en lo que contestaron los académicos. Dividimos el artículo en dos apartados: una revisión de literatura sobre publicaciones mexicanas acerca del papel que desempeñan las universidades para apoyar las funciones sustantivas, y los argumentos que dieron los entrevistados, clasificados en siete categorías de carácter empírico. Lo que plantean es que la institución atienda los siguientes asuntos: Soluciones para los diversos problemas burocrático–administrativos; Mejorar las condiciones de trabajo; Tomar en cuenta el cuestionamiento a los sistemas de mérito; Promover apoyos para la docencia y para los estudiantes; Facilitar la comunicación; Desarrollar los procesos de evaluación, y Fomentar la madurez de los cuerpos colegiados y revisar las políticas generales del posgrado. Una de las principales conclusiones es que la pregunta ¿Cómo puede contribuir la universidad para mejorar el trabajo académico de los profesores del posgrado? detonó en los académicos entrevistados diversas inquietudes, reflexiones, respuestas y propuestas que pueden ser recuperadas y aprovechadas para la mejora de las instituciones universitarias.
Assessment of the Investment Positions of the Russia Far East Regions
Authors:   Economic Research Institute FEB RAS, Mukhuddinov Shakhrier
Published: January 2021

This article analyzes investment in fixed assets in the constituent entities of the Federation of the Far Eastern Federal District for 2005–2017. The imbalance in investment volumes and GRP growth rates is shown. The author made a modification of the method for calculating the ratio of the investment position, consisting in the timing of the moments of generation of potential investment resources in the region and directly investment in fixed assets. The coefficients of the investment position were calculated, which made it possible to show the existence of a surplus (or deficit) of generated profit to cover investment needs in the region. Using the method of assessing the direction of movement of financial flows between regions of L. Melnikova, author identified the potential extent of inter-regional redistribution of investment resources in the Far East
Resource Industries of the Khabarovsk Territory in the Context of Negative Economic Dynamics
Authors:   Economic Research Institute FEB RAS, Antonova Natalia , Lomakina Natalia ,   Economic Research Institute FEB RAS
Published: January 2021

The trajectory and development trends of key complexes (mineral and raw materials and forestry) of the natural resource sector of the economy of the Khabarovsk Territory in 2007–2020, including both crisis and recovery periods, have been investigated. The main influencing factors of a positive and negative orientation, including external shocks and internal institutional imperatives, and their results for the industries of the natural resource sector of the Khabarovsk Territory are identified. The trends in the sectoral dynamics of production, investment activity, the contribution of resource industries to the structure and final results of the regional economy under the influence of crises of 2008–2009, 2014–2015 and 2020, different in nature, are shown
Dynamic Models for Seaweed Cultivation Development in The Waters of Luwu and Palopo Regency, South Sulawesi
Authors: Waluyo Waluyo , Yonvitner Yonvitner , Riani Etty , Arifin Taslim
Published: January 2021

Waters carrying capacity in the seaweed of Eucheuma cottonii cultures should be a concern for optimum seaweed culture. Carrying capacity can determine by Ecological Footprint (EF) analysis, which in this research use footprint production, and mas balance nitrate analysis. This research on Mei 2015 (1st transitional season) and September 2015 (2nd transitional season) in Luwu and Palopo, South Sulawesi. Map and land use analyzed with geographic information systems (GIS). The results showed that the Ecological Footprint Production (EFP) in Luwu waters is 67,88 ton/capita/year, or equivalent to 235,823.93 tons/year. Based on the analysis of the availability of water for seaweed is 38,374.69 hectares, it can produce seaweed (biocapacity) for 922,928.96 tons/year and the number of farmers that allows for use the waters is 13,595 capita. The Ecological Footprint Production (EFP) in Palopo waters is 3.08 ton/capita/year, or equivalent to 4,589.99 tons/year. Water availability analysis is 979.82 hectares can produce seaweed (biocapacity) for 10,115.34 ton/year and the number of farmers that allows for use the waters is 3,276 capita. Based on the four scenario simulation management results of the development seaweed cultivation Eucheuma cottonii in Luwu and Palopo Regency is based on the present waste input, pressing inputs of waste into the waters of 10%, 25% and 50% yield different waters biocapacity. The results comparison between biocapacity and Ecological Footprint, ecological status for Luwu and Palopo waters are still in sustainable use. Based on those simulation results showed that in the second scenario by pressing the waste input by 10% from the existing waste input, as well as assuming the availability of water utilizing the entire area of 38,374.69 hectares continuously (on the years scale of 2008-2030), it will produce the highest biocapacity waters in the amount of 8,257,274.94 tons/year. So with the management of seaweed in Palopo with the second scenario, assuming the availability of water utilizing the entire area of 979.82 hectares will produce the highest waters biocapacity of 14,306.92 tons/year.
Mekanisme Mempertahankan Teritori dalam Lingkungan Binaan
Authors: Manurung Parmonangan , Ikaputra Ikaputra
Published: January 2021

Territoriality is a term that was initially used to describe the realm of power in animals, especially birds. In its development, this terminology is also used to define areas owned by humans, both individuals, and groups. This study aims to find the process and mechanism of forming territorial areas in built environments, as well as the defense system used, both on a micro and macro scale. The study was conducted using a content analysis method with the object of research being various texts related to "territoriality" and research subjects in the form of books and articles published in journals. The results showed that there is a process of an area into a territory, which has the resources to meet the needs, the process of ownership or control of the area, as well as the process of maintaining an area using a particular defense system. From the results of the discussion, it can be concluded that the territory is owned and managed to secure resources, and efforts to maintain the territory are carried out with one or several defense systems.
Ordinary hyperspheres and spherical curves
Authors: Lin Aaron , Swanepoel Konrad
Published: January 2021

An ordinary hypersphere of a set of points in real d-space, where no d + 1 points lie on a (d - 2)-sphere or a (d - 2)-flat, is a hypersphere (including the degenerate case of a hyperplane) that contains exactly d + 1 points of the set. Similarly, a (d + 2)-point hypersphere of such a set is one that contains exactly d + 2 points of the set. We find the minimum number of ordinary hyperspheres, solving the d-dimensional spherical analogue of the Dirac–Motzkin conjecture for d ⩾ 3. We also find the maximum number of (d + 2)-point hyperspheres in even dimensions, solving the d-dimensional spherical analogue of the orchard problem for even d ⩾ 4.
Design, Construction, and Performance Evaluation of an Evaporative Cooling System for Tomatoes Storage
Authors: Awafo Edward A. , Nketsiah Samuel , Alhassan Mumin , Appiah-Kubi Ebenezer
Published: January 2021

An evaporative cooling system was designed and constructed to increase the shelf life of stored vegetables. The evaporative cooler was tested and evaluated using freshly harvested roma tomatoes. The equipment operates on the principle of evaporative cooling which increased the relative humidity and decreased temperature in the preservation chamber. The storage system was made up of wood of 25.4 mm thickness. A side of the system is made of jute sack, which was moistened with water flowing through a series of perforated pipes from a reservoir located at the top of the storage system. The water flowed under gravity. The relative humidity and temperature of the tomatoes were analyzed using tinytag humidity, temperature data logger. The weight loss of the tomatoes was also analyzed using a dial gauge scale. The results revealed that there was significant difference in using the evaporative cooling system for storing tomatoes as compared to ambient conditions. The average cooling efficiency was found to be 81%. The average temperature achieved in the cooling system dropped to an average of 23℃ when compared to the average ambient temperature of 33℃, and the relative humidity also increased up to 99% when compared to the average ambient of 59%. The analysis of the evaporative cooling system showed that tomatoes can be stored for more than 6 days with negligible changes in weight, colour and firmness as compared to those under ambient condition, which deteriorated after day 3. The evaporative cooling system was found to be effective and hence can be used by farmers, households, and tomato processing factories for short term storage of fresh tomatoes.
Methods of Description and Interpretation of Impact Tests Results of Fruit and Vegetables
Authors: Stropek Zbigniew
Published: January 2021

The article presents determination methods of characteristic values of the reaction force course during the impact on fruit and vegetables to quickly assess their firmness or maturity. Moreover, various methods of modelling of the plant material behaviour during the impact that use differential equations, analytical equations, statistic models and numerical methods were discussed. Furthermore, dynamic methods that use fruit dropping on a rigid plate and measurement techniques that use a rigid element that hits a motionless fruit were reviewed and assessed. Advantages and disadvantages of these methods were presented. Statistical models are better for assessment of the bruise damage, but theoretical models are more useful for understanding the impact of various factors related to the impact damage. Various methods of application of rheological theories that describe a behaviour of the produce tissue treated as an elastic, elastic and plastic and visco-elastic were also described.
Assessment of Co2 Emission by Tractor Engine at Varied Control Settings of Fuel Unit
Authors: Wasilewski Jacek , Szyszlak-Bargłowicz Joanna , Zając Grzegorz , Szczepanik Małgorzata
Published: January 2021

The paper presents results of experimental studies concerning CO2 emission of S-4003 diesel engine Ursus C-360 at a variable fuel injection advance angle and opening pressure of injectors. Measurements were made on the dynamometric stand on the test bench. The engine operated according to the load characteristic at two characteristic rotational speeds i.e., at the maximum torque velocity (1600 rpm) and at the rated speed (2200 rpm). In each measurement point of load characteristics, CO2 concentration was measured in exhaust gases with the use of exhaust gases analyser M-488 Multigas Plus. For a more detailed analysis of the CO2 content in exhaust gases, additional change of O2 level emission was presented, which in the biggest amount combines elementary carbon included in fuel during combustion. The studies showed the CO2 content reduction in exhaust gases at the reduced (by 3º of crankshaft rotations) fuel injection advance angle in comparison to the nominal angle by 4.5% at the rotational speed of 1600 rpm and by 5.7% at the speed of 2200 rpm (the average values for all measurement points of load - brake horsepower of engine). Similarly, CO2 concentration decrease in exhaust gases of the investigated engine was reported for the increased (by 1.5 MPa) opening pressure of injectors in comparison to the nominal pressure, on average by 9.8% for the speed of the maximum rotational moment and by 4.5% for the rated speed.
Wheat Bread with Grape Seeds Micropowder: Impact on Dough Rheology and Bread Properties
Authors: Valková Veronika , Ďúranová Hana , Štefániková Jana , Miškeje Michal , Tokár Marián , Gabríny Lucia , Kowalczewski Przemysław Łukasz , Kačániová Miroslava
Published: January 2021

The current study was designed to enhance the functionality of white bread by replacement of wheat flour with different levels (1%, 2%, 5%, and 8%) of grape seeds micropowder (GSMP) with nanosized particles (10 µm). Chemical composition of GSMP, volume and sensory attributes, evaluated with the panel of evaluators and an electronic nose (e-nose) and an electronic eye (e-eye) were investigated in the tested breads. It has been found out that GSMP contained appreciable amounts of flavonoids including catechin, epicatechin, gallic acid and minerals especially, Ca, K and Mg. The data from rheological analysis showed that the addition of GSMP (mainly at 5% and 8% levels) to the wheat flour had a positive effect on dough manifesting with rheology by increased dough stability. The volume of the experimental breads (above 1% concentration) was demonstrably declined (P < 0.0001) in comparison with the control bread. Sensory rating revealed that the bread fortified with 1% GSMP was judged by the consumer panelists as the most acceptable with the highest scores for all quality attributes which was also confirmed by the data of e-nose and e-eye. Our results suggest for the first time that 1% GSMP addition appears to be a promising functional ingredient to improve bread with required qualitative and sensory properties.
CD11b is involved in coxsackievirus B3-induced viral myocarditis in mice by inducing Th17 cells
Authors: Wei Heng , Lin Chong-Kai , Lu Sheng-Jian , Wen Yu-Xin , Yuan Shuai , Liu Yan-Li
Published: January 2021

Viral myocarditis (VMC) caused by coxsackievirus B3 (CVB3) infection is a life-threatening disease. The cardiac damage during VMC is not mainly due to the direct cytotoxic effect of the virus on cardiomyocytes but mostly involves the induction of immune responses. Integrin CD11b plays an important role in immune response, for instance, in the induction of Th17 cells. However, the role of CD11b in the pathogenesis of VMC remains largely unknown. In the present study, a mouse model of VMC was established by CVB3 infection and CD11b was knocked down in the VMC mice by transfection with siRNA-CD11b. The expression of CD11b and IL-17 in heart tissues, frequency of Th17 cells in spleen tissues and serum IL-17 levels were measured using quantitative RT-PCR, Western blot, immunohistochemistry, flow cytometry and ELISA. Results showed that CVB3 infection caused the pathological changes in heart tissues with the increases in the following indexes: expression of CD11b and IL-17 in heart tissues, frequency of Th17 cells in spleen tissues and serum IL-17 levels. The expression of CD11b was positively correlated with IL-17 expression in heart tissues. Depletion of CD11b attenuated the damage caused by CVB3 and decreased the frequency of Th17 cells in spleen tissues as well as in IL-17, IL-23 and STAT3 expression in heart tissues. In summary, our findings reveal that disruption of CD11b function reduced CVB3-induced myocarditis, suggesting that CD11b may be a novel therapeutic target for VMC.
Effects of center pivot sprinkler fertigation on the yield of continuously cropped soybean
Authors: Cao Hua , Fan Yongshen , Chen Zhen , Huang Xiuqiao
Published: January 2021

Continuous cropping is a common agricultural practice in Northeast China. Focusing on soybeans cropped continuously for two consecutive years, this article fully explores the effects of the amount of water, fertilizing rate, and fertilizing method on the growth and yield of soybean. Specifically, an orthogonal experimental plan was designed involving these three factors. Each factor was divided into three levels: the amount of water was set as 52.62 mm (W1), 73.41 mm (W2), and 138.6 mm (W3); the fertilizing rate was set as 6.75 kg/hm2 (N1), 9.75 kg/hm2 (N2), and 13.5 kg/hm2 (N3); and the fertilizing method was set as center pivot sprinkler (CPS) fertigation (F1), microspray (MS) fertigation (F2), and MS fertilizing + CPS spraying and leaching (F3). During the experiments, the growth traits at each growth stage were monitored, and the soybean yield was measured. The following results were obtained through the analysis of the experimental data: the amount of water significantly affects the growth traits of soybean in the early stage of growth; the fertilizing rate greatly affects the stem diameter; and the fertilizing method is a major influencer of soybean yield. The highest yield (2811.88 kg/hm2) was observed in zone 4 (W2N1F2). This means irrigation and fertilization are very important to the normal growth of continuously cropped soybean; the yield loss induced by continuous cropping can be mitigated effectively through timely and adequate irrigation and topdressing, plus fertilization by the suitable method. To prevent yield loss, farmers in Northeast China are suggested to replace continuous cropping with crop rotation. If continuous cropping is unavoidable, foliage fertilizer should be sprayed timely for topdressing at the flowering and seed-filling stages.
Decitabine shows anti-acute myeloid leukemia potential via regulating the miR-212-5p/CCNT2 axis
Authors: Xing Lina , Ren Jinhai , Guo Xiaonan , Qiao Shukai , Tian Tian
Published: January 2021

Previous research has revealed the involvement of microRNA-212-5p (miR-212-5p) and cyclin T2 (CCNT2) in acute myeloid leukemia (AML). However, whether the miR-212-5p/CCNT2 axis is required for the function of decitabine in AML has not been well elucidated. Quantitative reverse transcription-polymerase chain reaction was used to examine enrichment of miR-212-5p. The relationship between CCNT2 and miR-212-5p was verified by the luciferase reporter assay. Cell apoptosis was evaluated by flow cytometry and western blot. CCK-8 assay was performed to determine cell viability. Decitabine significantly repressed cell viability, while promoted cell apoptosis. Meanwhile, the expression levels of cyclinD1, CDK4, and Bcl-2 were suppressed in cells with decitabine exposure, but Bax and caspase-3 expression levels were upregulated. Besides, miR-212-5p upregulation had the similar function with decitabine in AML cell proliferation and apoptosis. Subsequently, restoration of CCNT2 attenuated miR-212-5p overexpression-induced effects in Kasumi-1 and SKNO-1 cells. In addition, miR-212-5p depletion reversed decitabine-induced CCNT2 downregulation. The miR-212-5p/CCNT2 axis had an implication in the anti-leukemic effect of decitabine in AML.
Effects of Bacillus megaterium on growth performance, serum biochemical parameters, antioxidant capacity, and immune function in suckling calves
Authors: Yao Jun , Wang Lili , Zhang Wenju , Liu Mengjian , Niu Junli
Published: January 2021

Background

This study was conducted to investigate the effects of Bacillus megaterium on growth performance, serum biochemical parameters, antioxidant capacity, and immune function in suckling calves.

Methods

In total, 20 1-day-old Holstein calves with similar body weight (BW) and good health condition were randomly assigned into two groups with ten replicates per group and one calf per replicate. The control group (CON group) was fed a basal diet, whereas the B. megaterium group (BM group) was fed the basal diet supplemented with 500 mg/day/head of B. megaterium (1010 CFU/g) for 28 days.

Results

The results revealed that the BM group showed an increase in final BW, daily weight gain, and feed-to-gain ratio (p < 0.05) and a decrease in diarrhea rate. Moreover, the concentrations of serum cholesterol and high-density lipoprotein decreased (p < 0.05) in the BM group compared with the CON group at 28 days. The level of serum glutathione was higher (p < 0.05) in the BM group than that of the CON group at 14 days, whereas the level of serum malondialdehyde decreased (p < 0.01) in the BM group compared with the CON group at 28 days. In addition, compared with the CON group (p < 0.05), the concentrations of serum IgA, IgM, IgG, and IL-4 were higher, whereas the concentration of serum TNF-α decreased in the BM group at 28 days.

Conclusion

B. megaterium had beneficial effects on the improvement of growth performance, immune function, and intestinal oxidative status of suckling calves.
Testosterone aggravates cerebral vascular injury by reducing plasma HDL levels
Authors: Jin Tao , Wang Lu , Li Dongbo , Yang Tao , Zhou Yuefei
Published: January 2021

Testosterone is often used to improve the physiological function. But increased testosterone levels affect blood lipids and cause inflammation and oxidative stress, which are risk factors for vascular diseases. This study aimed at investigating the effects of testosterone on cerebral vascular injury using an established intracranial aneurysm (IA) model. Sixteen-week-old female C57Bl/6 mice were subcutaneously infused with testosterone propionate (TP; 5 mg/kg day) or plain soybean oil (controls) for 6 weeks. After 2 weeks of treatment, mice were given angiotensin II-elastase for another 4 weeks. The results showed that TP significantly increased cell apoptosis and reactive oxygen species production in cerebral artery, together with increases in plasma tumor necrosis factor-α (TNF-α) levels and in urinary 8-isoprostane levels. Plasma assays showed that 2 weeks after TP or soybean oil administration, the high-density lipoprotein (HDL) level was higher in the TP group than in controls. In vitro studies showed that testosterone increased TNF-α and monocyte chemotactic protein-1 mRNA and protein expression levels in RAW 264.7 macrophages. In summary, by reducing the HDL level, TP aggravates cerebral artery injury by increasing cell apoptosis, inflammation, and oxidative stress.
Graphene Oxide: A Promising Material for Regenerative Medicine and Tissue Engineering
Authors: Maleki Masomeh , Zarezadeh Reza , Nouri Mohammad , Sadigh Aydin Raei , Pouremamali Farhad , Asemi Zatollah , Kafil Hossein Samadi , Alemi Forough , Yousefi Bahman
Published: January 2021

Regenerative medicine and tissue engineering have been considered pioneer fields in the life sciences, with an ultimate goal of restoring or switching lost or impaired body parts. Graphene oxide (GO) is the product of graphene oxidation and presents a great opportunity to make substantial progress in the field of regenerative medicine; for example, it supports the possibility of creating a cellular niche for stem cells on a nanoparticle surface. GO creates a fascinating structure for regulating stem cell behavior, as it can potentially applied to the noninvasive chase of stem cells in vivo, the liberation of active biological factors from stem cell-containing delivery systems, and the intracellular delivery of factors such as growth factors, DNA, or synthetic proteins in order to modulate stem cell differentiation and proliferation. Due to the interesting physicochemical properties of GO and its possible usage in tissue engineering approaches, the present review aims to elaborate on the ways in which GO can improve current regenerative strategies. In this respect, the applicability of GO to the repair and regeneration of various tissues and organs, including cardiac muscle, skeletal muscle, and nervous, bone, cartilage, adipose, and skin tissues, is discussed.