bluuebunny/crossref_metadata_2025 huggingface dataset:
Biosynthesis and Cytotoxic Properties of Ag, Au, and Bimetallic Nanoparticles Synthesized Using Lithospermum erythrorhizon Callus Culture Extract
Authors: Shkryl Yury , Rusapetova Tatiana , Yugay Yulia , Egorova Anna , Silant’ev Vladimir , Grigorchuk Valeria , Karabtsov Aleksandr , Timofeeva Yana , Vasyutkina Elena , Kudinova Olesya , Ivanov Vladimir , Kumeiko Vadim , Bulgakov Victor
Published: August 2021

The present study reports a green chemistry approach for the rapid and easy biological synthesis of silver (Ag), gold (Au), and bimetallic Ag/Au nanoparticles using the callus extract of Lithospermum erythrorhizon as a reducing and capping agent. The biosynthesized nanoparticles were characterized with ultraviolet-visible (UV-Vis) spectroscopy, X-ray diffraction (XRD) analysis, and transmission electron microscopy (TEM). Our results showed the formation of crystalline metal nanostructures of both spherical and non-spherical shape. Energy dispersive X-ray (EDX) spectroscopy showed the characteristic peaks in the silver and gold regions, confirming the presence of the corresponding elements in the monometallic particles and both elements in the bimetallic particles. Fourier-transform infrared (FTIR) spectroscopy affirmed the role of polysaccharides and polyphenols of the L. erythrorhizon extract as the major reducing and capping agents for metal ions. In addition, our results showed that the polysaccharide sample and the fraction containing secondary metabolites isolated from L. erythrorhizon were both able to produce large amounts of metallic nanoparticles. The biosynthesized nanoparticles demonstrated cytotoxicity against mouse neuroblastoma and embryonic fibroblast cells, which was considerably higher for Ag nanoparticles and for bimetallic Ag/Au nanoparticles containing a higher molar ratio of silver. However, fibroblast migration was not significantly affected by any of the nanoparticles tested. The obtained results provide a new example of the safe biological production of metallic nanoparticles, but further study is required to uncover the mechanism of their toxicity so that the biomedical potency can be assessed.
Impresso Inspect and Compare. Visual Comparison of Semantically Enriched Historical Newspaper Articles
Authors: Düring Marten , Kalyakin Roman , Bunout Estelle , Guido Daniele
Published: August 2021

The automated enrichment of mass-digitised document collections using techniques such as text mining is becoming increasingly popular. Enriched collections offer new opportunities for interface design to allow data-driven and visualisation-based search, exploration and interpretation. Most such interfaces integrate close and distant reading and represent semantic, spatial, social or temporal relations, but often lack contrastive views. Inspect and Compare (I&C) contributes to the current state of the art in interface design for historical newspapers with highly versatile side-by-side comparisons of query results and curated article sets based on metadata and semantic enrichments. I&C takes search queries and pre-curated article sets as inputs and allows comparisons based on the distributions of newspaper titles, publication dates and automatically generated enrichments, such as language, article types, topics and named entities. Contrastive views of such data reveal patterns, help humanities scholars to improve search strategies and to facilitate a critical assessment of the overall data quality. I&C is part of the impresso interface for the exploration of digitised and semantically enriched historical newspapers.
A Theoretical Analysis of the Pricing and Advertising Strategies with Lévy-Walking Consumers
Authors: Wang Wei , Li Gang
Published: August 2021

The pervasive adoption of mobile devices and proximity technologies enables firms to trace consumers’ trajectories and locations. This connects firms’ marketing and operations strategies more tightly with consumer mobility. In this paper, we propose a novel analytical model to examine the economic effects of consumer mobility on pricing and advertising strategies by incorporating consumers’ Lévy-walking behavior into advertising economics models. We ascertain the convergent effect of consumer mobility, i.e., consumers’ convergence to a firm leads to higher product price and advertising level. Meanwhile, it improves social welfare by increasing firm profit and consumer surplus. More interestingly, we find that consumers’ average movement distance (AMD) has opposing influences in pricing and advertising strategies. Specifically, longer AMD strengthens the convergent effect on advertising strategy but weakens that on pricing strategy. Finally, we also conduct a numerical analysis to uncover the impacts of the presence of proximity technologies on advertising outcomes. The results of this paper provide advisable guidance to firms on how to craft and adjust pricing and advertising strategies in accordance to consumer mobility. Moreover, the results present insights on welfare implications of informative advertising from the perspective of consumer mobility.
Thermodynamic Assessment of the NaF-KF-UF4 System
Authors: Schacherl Bianca , Eloirdi Rachel , Konings Rudy J. M. , Beneš Ondrej
Published: August 2021

In the Molten Salt Reactor (MSR) concept, metal fluorides are key components of possible fuel and coolant salts. The fast reactor option opens the possibility for alternatives to the Li based matrix salts, avoiding the costly 7Li enrichment and the tritium production from residual 6Li. Such alternatives can be based on NaF and KF as matrix components. In this study, two pseudo-binary phase diagrams of NaF-UF4 and KF-UF4, and the NaF-KF-UF4 pseudo-ternary system were experimentally investigated using Differential Scanning Calorimetry (DSC). The obtained data were used to perform a full thermodynamic assessment of the NaF-KF-UF4 system. The calculated pseudo-ternary eutectic was found at 807 K and a 68.9-7.6-23.5 mol% NaF-KF-UF4 composition. The comprehensive experimental and modelling data obtained in this work provide further extension of the JRCMSD thermodynamic database describing thermodynamic properties of key fuel and coolant salts for the MSR technology.
Safety and Efficacy of Tenapanor for Long-term Serum Phosphate Control in Maintenance Dialysis: A 52-Week Randomized Phase 3 Trial (PHREEDOM)
Authors: Block Geoffrey A. , Bleyer Anthony J. , Silva Arnold L. , Weiner Daniel E. , Lynn Robert I. , Yang Yang , Rosenbaum David P. , Chertow Glenn M.
Published: August 2021

Key Points

Tenapanor is a first-in class inhibitor of NHE3 and acts via a nonphosphate-binding mechanism to reduce intestinal phosphate absorption.

In the efficacy analysis set, patients randomized to tenapanor experienced a decrease in serum phosphate from 7.7 mg/dl to 5.1 mg/dl.

Diarrhea was the only drug-related adverse event reported for more than 5% of patients and resulted in drug discontinuation in 16% of patients.

Background

Treating hyperphosphatemia is a tenet of dialysis care. This trial assessed the safety and efficacy of tenapanor for the management of hyperphosphatemia.

Methods

In this 52-week phase 3 study (NCT03427125), participants receiving maintenance dialysis with both hyperphosphatemia (serum phosphate 6.0–10.0 mg/dl) and a 1.5 mg/dl increase after phosphate binder washout were randomized (3:1) to tenapanor 30 mg twice daily for 26 weeks (randomized treatment period) or sevelamer carbonate (52-week safety control). Participants completing 26 weeks of treatment with tenapanor were rerandomized (1:1) to tenapanor or placebo for 12 weeks (randomized withdrawal period), and were eligible to enter the 14-week safety extension period. With input from the US Food and Drug Administration, the primary efficacy end point was the difference in the change in serum phosphate from the end of the randomized treatment period to the end of the randomized withdrawal period, among participants who achieved ≥1.2 mg/dl decrease in serum phosphate during the randomized treatment period (efficacy analysis set). Efficacy was also evaluated in the intention-to-treat (ITT) analysis set.

Results

Of 564 eligible participants randomized to receive tenapanor (n=423) or sevelamer carbonate (n=141) during the randomized treatment period, 255 (60%) in the tenapanor group subsequently were rerandomized to tenapanor (n=128) or placebo (n=127) during the randomized withdrawal period. In the efficacy analysis set (n=131), the difference in estimated mean change in serum phosphate level between tenapanor and placebo from the beginning to the end of the randomized withdrawal period was −1.4 mg/dl (P<0.0001); in the ITT analysis set (n=243), the estimated mean difference was −0.7 mg/dl (P=0.002). Loosened stools were the most frequently reported adverse event (53% during the randomized treatment period). Serious adverse events were reported more frequently for participants treated with sevelamer carbonate (16%–23% across the three study periods) compared with tenapanor (11%–17%).

Conclusions

Tenapanor reduced serum phosphate concentrations and maintained control of serum phosphate in participants receiving maintenance dialysis, with an acceptable safety and tolerability profile.
İş Yeri Adlarındaki Türkçenin Yabancı Dillerle Etkileşimi Kilis Örneği
Authors: PARLAK KALKAN Gülşah , KIRİBİŞ Ali
Published: August 2021

Türkiye ile Suriye arasındaki sınır hattında yer alan Kilis; verimli toprakları, elverişli iklimi, geçiş güzergâhında bulunmasına bağlı ulaşım olanakları ile yüzyıllarca önemli bir yerleşim yeri olmuş ve kültürler arası etkileşimin de yüksek düzeyde olduğu ilde karma bir yapı oluşmuştur. Ayrıca yaklaşık dokuz yıl önce Suriye’de başlayan savaş sebebiyle de Kilis, yerli nüfusundan daha fazla bir mülteci nüfusu ile birlikte yaşamaktadır. Bu durum, ildeki ekonomik faaliyetlerden sosyokültürel yapıya kadar pek çok konuda etkili olduğu gibi yörede konuşulan Türkçeyi de etkisi altına almıştır. Söz konusu farklı kültürlerin kesişme noktası olan cadde ve sokaklar ise kültürel kimliğin deşifre edilebileceği önemli veri sahalarıdır. Farklı sosyal katmanlardan kişilerin öncelikli olarak çeşitli ihtiyaçlarını karşılamak üzere buluştuğu cadde ve sokaklar ile buralarda bulunan mağaza ve iş yerlerinde istemli ya da istemsiz iletişim hâlinde olmaları, dilin güncel durumu hakkında da konuyla ilgili araştırma yapmak isteyenlere önemli ipuçları sunmaktadır.Nicel ve nitel veri toplama tekniklerinin bir arada kullanıldığı karma desenli bu çalışmada, Kilis ilinin merkezinde bulunan ve farklı özellikteki insan gruplarının yaşadığı üç bölge araştırma sahası olarak seçilmiştir. Birinci bölge daha çok yerli halkın yaşadığı Cumhuriyet Caddesi, Murtaza Caddesi; ikinci bölge daha çok il dışından üniversite okumak için ile gelen öğrencilerin veya iş sebebiyle ilde bulunan memurların ikamet ettiği Üniversite Caddesi; üçüncü bölge ise çoğunlukla Arap halkın yaşadığı Dereboyu Caddesi, Nemika Caddesi ve Zeytinli Mahallesi olarak belirlenmiştir. Her üç bölgeden derlenen 750 civarında iş yeri, mağaza vb. iş yeri adları köken itibarıyla tasniflenmiştir. Türkçenin yabancı diller ile etkileşim durumunu tespit amaçlı, sınırlı bir ölçekte ele alınan bu çalışmanın aynı zamanda nüfus yoğunluğunun sosyokültürel farklılıkları ile iş yeri adları arsındaki ilişkiyi de betimler nitelikte olması ile alana katkı sağlaması umulmaktadır.
Análisis de los efectos sobre el material genético de nutrientes importantes para el crecimiento y desarrollo de la población infantil
Authors: Padula Gisel , Gambaro Rocío , Mantella Melisa , Seoane Analía
Published: August 2021

Dentro del campo bioantropológico se estudian los cambios somáticos relacionados con el consumo de alimentos y el equilibrio de los nutrientes en el cuerpo. En Argentina, se observa una disminución de desnutrición aguda y un aumento de obesidad, retraso crónico del crecimiento y desnutrición oculta. La desnutrición oculta son conjuntos de carencias específicas de micronutrientes. Una dieta desbalanceada puede incrementar la mutación genética y las aberraciones cromosómicas. Debido a que las deficiencias de micronutrientes no se detectan por antropometría, es importante el diseño de modelos experimentales que permitan investigar sus efectos. El objetivo de este trabajo es presentar los resultados relacionados con la ingesta de macro y micronutrientes de importancia para el normal crecimiento y desarrollo de la población infantil. Se evaluó la inestabilidad genómica asociada a la deficiencia de energía y proteínas, y a las deficiencias y excesos de micronutrientes, y se analizó el rango fisiológico establecido para niños.
De la De la plaza a la sala
Authors: Mercado Camila
Published: August 2021

Este artículo aborda el desarrollo de experiencias artístico-comunitarias en Buenos Aires para lo cual se analiza el caso del Grupo de Teatro Catalinas Sur del barrio de La Boca. Se trata de un grupo pionero del teatro comunitario local conformado durante la apertura democrática luego de la última dictadura cívico-militar (1976-1983). El teatro comunitario busca promover la participación ciudadana en la cultura, la creación de circuitos artísticos alternativos y la recuperación de historias invisibilizadas en las comunidades.

Se analiza el cambio de coyuntura durante la segunda mitad de los años 90 en el campo de las políticas culturales donde un paradigma democratizante fue articulándose con formas de democracia participativa y de mercantilización de la cultura. El texto se pregunta por las implicancias que tuvo este cambio en el modo de producción artística de Catalinas Sur, las estrategias de gestión cultural que desplegaron y los vínculos emergentes entablados con agentes estatales.
Envejecimiento, Discapacidad Motriz y Exclusión
Authors: Lorca Mauricio , Candia Araneda Cristóbal
Published: August 2021

Este artículo busca comprender cómo se conforman las percepciones de exclusión social en personas mayores en situación de discapacidad motriz que habitan en la provincia de Copiapó de la región de Atacama, en Chile. A partir de datos recabados por medio de una etnografía enfocada, se emplea la perspectiva biopsicosocial y el modelo de los determinantes sociales en salud para acceder a subjetividades que se anclan a las especificidades del territorio de estudio. Los resultados obtenidos revelan la importancia que tienen las barreras y los facilitadores presentes en el ambiente, los factores personales y los determinantes sociales en salud en las percepciones de exclusión social y, por ende, de inclusión de los individuos entrevistados.
Del caleidoscopio de la vida tribal a la etnografía
Authors: Sirimarco Mariana , Daich Deborah
Published: August 2021

Hace ya tiempo que venimos percibiendo, en nuestra calidad de docentes y investigadoras, ciertas dificultades -sobre todo en estudiantes y graduados recientes- en la construcción de investigaciones antropológicas. Nos referimos, puntualmente, a cierto grado de deterioro en algunos lineamientos epistemológicos propios de nuestro quehacer -el recorte de la investigación y la pregunta antropológica de un texto. Este trabajo explora la formulación y los desafíos de esas herramientas en función de lecturas metodológicas, epistemológicas, morales y políticas. No pretende cristalizar definiciones ni brindar técnicas o procedimientos de manual, sino apuntar algunas simples reflexiones, con objetivos finalmente pedagógicos.
Afecto, cuidado y dinero
Authors: Russo Marlene Denise
Published: August 2021

En la justicia civil de familia, los conflictos que las ex parejas llevan al juzgado son mayoritariamente considerados del orden doméstico, de la esfera de intimidad. No obstante, al ser “contados” en ese espacio judicial esos conflictos y las narrativas que se construyen sobre estos se tornan públicos. De los tipos de conflictos que se tramitan allí, surgen dos que se relacionan con concepciones acerca del dinero, el cuidado y los afectos. Las figuras legales son, lo que en el anterior Código Civil y Comercial, se denominaba “cuota de alimentos” y “regímenes de visita”. Estas figuras permiten tomar al dinero y los afectos como claves de análisis para explorar los sentidos y argumentos relativos al cuidado y la crianza de los hijos que exponen tanto los recurrentes a la justicia como los propios funcionarios del juzgado. A través del análisis de situaciones de campo observadas en el espacio de las audiencias de conciliación (etapa previa) de un tribunal de familia del conurbano bonaerense, indagaré las fronteras entre las dimensiones que idealmente pertenecen a lo público y a lo privado y los usos y sentidos que aparecen del dinero, el cuidado y los afectos en los conflictos familiares.
Investigar y militar contra las cárceles
Authors: Pérez Camila
Published: August 2021

En el año 2015 obtuve una beca doctoral del CONICET para investigar una temática que me interesaba desde mi formación de grado como antropóloga: la educación en contextos de encierro. Por múltiples circunstancias recién en el 2017 pude ingresar al campo de manera sostenida para documentar la experiencia de un taller de alfabetización donde les estudiantes y les alfabetizadores se encontraban privades de su libertad.   

En este articulo me interesa reconstruir algunos aspectos centrales de mi proceso de investigación, vinculados al trabajo de campo pero también a la escritura de la tesis, para comprender los motivos que me llevaron a postular que por el momento no deseo volver a investigar en cárceles (bajo las mismas condiciones), aunque sí me siento comprometida a sostener diversas actividades de trabajo militante contra ellas.
Coronavirus aviation crisis
Authors: Zajac Grzegorz
Published: August 2021

The crisis caused by the Coronavirus pandemic has affected various parts of the economy, including air transport. Many carriers have reduced their operations by 70-80% and even some have suspended operations altogether. It will not be possible to restore the precrisis situation related to the Coronavirus pandemic without government support. The state authorities must support the carriers in the interest of maintaining a relatively balanced political and economic situation in the country. For many months, the restrictions will continue in 2021. If this crisis is overcome, it will take several years to restore the state of air traffic development before the coronavirus pandemic. Keywords: Crisis; Aviation; Air traffic
The acculturation of scandinavians in England: A consideration of the burial record
Authors: McLeod Shane H
Published: August 2021

The portrayal of the 'Vikings' as an archetypal barbarian 'other,' wreaking death and destruction wherever they went, was already current in the medieval period, but in England the depictions became more extreme in the centuries after the attacks. This paper will focus on the texts and archaeology of ninth- and tenthcentury England and argue that in many respects Scandinavians were not as 'other' as later medieval writers believed. Furthermore, once Scandinavian groups settled in England the notion of 'otherness' appears to have quickly disappeared. Particular attention will be paid to the burial record as a means of identifying probable Scandinavians, and for evidence of acculturation to Anglo- Saxon Christian burial customs.
Flavius constantius and affairs in Gaul between 411 and 417
Authors: Dunn Geoffrey D.
Published: August 2021

In the second decade of the fifth century Flavius Constantius was the leading figure in the western Roman empire. After besieging Arles in 411 and defeating the usurper Constantine III, in 417 he married Galla Placidia, the half-sister to Honorius, emperor in the West from 395 to 423. This paper is interested in the years between those two events. David Frye has argued that Constantius maintained a strong interest in political and ecclesiastical appointments there during these years. The argument advanced here is that although Constantius was responsible for installing Patroclus as bishop of Arles, this was not on his own initiative. Further, Constantius was not in Gaul continuously and that when he was there he was too engaged in dealing with the Goths in Narbonne, who held Galla Placidia hostage, to take much interest in the creation of an episcopate in Gaul more sympathetic to him and the imperial regime than there had been under Constantine III. Although he had the opportunity to replace church leaders as he did with civic leaders, he did not do so.
'Lock up your valuables': Perceptions of sailors and sea-merchants in port cities of late antiquity and early Byzantium
Authors: Wade Janet
Published: August 2021

The ongoing presence of sailors and sea-merchants in the major port cities of the late antique and early Byzantine periods made them an important and influential subculture. This paper looks at the range of perceptions of the maritime community that exist in late Roman and early Byzantine sources. Various secular and ecclesiastical attitudes are discussed and compared with relevant sections of the civil and maritime law codes. When sailors, sea-merchants, and other mariners are mentioned by their contemporaries, they are more often than not portrayed in an unfavourable light. The legislation suggests that the negative perception of these men does have some basis in reality, yet the traditional view of these men as unsavoury and dishonest characters needs to be questioned. This paper asks why the ancient sources perceived sailors and sea-merchants in the way that they did. It discusses the social stigma attached to these men, the potential moral threat that they posed, their superstitious nature, and their socially disruptive and subversive behaviour. This paper highlights the reasons why modern scholars have tended to overlook the presence of the maritime community and their sociological importance in major port cities of this period. It argues that the maritime crowd had an integral role in the shaping of the economy, society, and even the church during this period.
The six ages of Patrick: Yet another return to the dating question
Authors: Joyce Stephen J.
Published: August 2021

This article returns to the surviving texts of Patrick, apostle to Ireland, in order to refine further his floruit in the fifth century. It argues that Patrick's use of a classical scheme relating age to status clarifies the contexts for the autobiographical details of his life, and that these details can be correlated with the limited historical records that survive for this period. In connecting his excommunication of Coroticus to an Easter controversy c. 455, and his controversial elevation to an episcopal see to a dislocation in clerical authority in Britain c. 441, I argue that Patrick's formal clerical career c. 427-455 matches Richard Hanson's sophisticated literary arguments made in the latter third of the twentieth century. I also propose that the uncertainty over the date of Patrick's death (in a context of exile), as represented by various reports in the Irish and Welsh annals c. 457-493, is inconsequential to his formal period of authority.
Aggregated coefficients of IT projects labor resources
Authors: Kotkovets A. A. , Pottosina S. A. , Pinchuk T. G.
Published: August 2021

The purpose of this article is to reduce the cost and time for the formation of a project team, as well as improve the quality of selected teams, by automating the process of calculating the labor resources of project teams. The objectives of the article are to study and analyze theoretical works on project teams formation and the construction of aggregated coefficients of a project and an employee for IT projects labor resources calculation. The article reveals the basic concepts and mechanisms of project management and human resources of an IT organization; the process of a project team forming and its structure, which is made up of the customer's team and the executor's team, is considered. A set of key indicators of a project and an employee is highlighted, which are necessary components for introducing the concept of an aggregated coefficient. The description of the calculation of the aggregate coefficient of the project (Iп), the aggregate coefficient of the employee (Ic), as well as the project aggregated coefficient of the employee (Ic п ) is provided, since the aggregated indicators of the project and the employee are independent in relation to each other, and to solve the tasks we need a coefficient that describes usefulness and efficiency of attracting a specific employee for a specific project. The theoretical significance of the work lies in the fact that it describes the process of project teams building in details, proposes aggregated coefficients of projects and employees, which make it possible to assess and select labor resources for project teams. The obtained theoretical results can be used to assess the role of each employee on a separate project and in the company as a whole, to calculate the labor resources of IT projects, as well as by the search and project planning department when choosing the scope and nature of work for the period under consideration.
Static small radiation fields and detectors for relative small field dosimetry in external beam radiotherapy
Authors: Piskunou V. S. , Tarutin I. G.
Published: August 2021

The aim of this work is to analyze existing detectors for the relative dosimetry of small radiation fields in external beam radiation therapy and the requirements for them, consider the problems in carrying out dosimetry of small radiation fields, determine the physical conditions under which an external photon beam can be designated as a small field. In modern radiation therapy, there is an increase in the use of small static fields, which is facilitated by the general availability of standard and optional multileaf collimators and new generation treatment machines of various designs. There is growing interest in the use of such radiation techniques as stereotactic radiosurgery, stereotactic body radiotherapy, intensity modulated radiotherapy, which are widely used small fields. This has increased the uncertainties in clinical dosimetry, especially for small fields. Accurate dosimetry of small fields is important when commissioning linear accelerators and is a difficult task, especially for very small fields used in stereotactic radiotherapy. In the course of the work, a study of topical problems in the dosimetry of small radiation fields in external beam radiation therapy has been carried out. The physical conditions under which the external photon beam can be designated as a small field are considered. A review and analysis of existing detectors for the relative dosimetry of small radiation fields, as well as an analysis of the requirements for the character. The analysis revealed that liquid ionization chambers, silicon diodes, diamond detectors, organic scintillators, radiochromic films, thermoluminescent dosimeters and optically stimulated luminescence detectors are considered suitable for relative dosimetry of small photon fields and are recommended for use in clinics where radiotherapy is performed.
This Old House
Authors: Olson Anthony
Published: August 2021

In this essay, I explain how I switched the lens of my  sophomore research unit to one that focuses on rural issues. This essay follows the unit from beginning to end. I explain what I do to raise awareness through the use of daily articles along with providing models for their own research. The essay then details the writing portion and how it has changed over time. The essay ends with a reflection of my work and choices.
A Systematic Review of Research on Rural College Access Since 2000
Authors: Sowl Stephanie , Crain Andrew
Published: August 2021

Aligning with the NREA's "college and career readiness" research priority, this article presents a systematic literature review of 134 publications regarding the state of rural college access and choice research between the years 2000 and 2020. We use Perna's (2006) college choice model to guide our comprehensive summary of current themes as well as remaining challenges and opportunities. We find that publications generally failed to articulate the rural context in sufficient detail, that studies in the Appalachian region were overrepresented, and that a majority of publications focused on the roles of rural habitus or K-12 and community context in shaping college aspirations and enrollment for rural students. Future research should prioritize rural regions outside of Appalachia, rural youth of Color, rural forms of capital, and how higher education and social, economic, and political contexts impact rural college access and choice.
Primeira República Brasileira e o Supremo Tribunal Federal
Authors: Nery Júnior Cícero José Barbosa
Published: August 2021

A atuação proativa do Supremo Tribunal Federal tem levantado críticas e temores ao longo dos últimos anos. Teme-se uma desarmonia entre os Poderes. No entanto, a resposta para esse temor não seria uma limitação excessiva na sua atuação. Por esta razão, o presente trabalho analisará o papel constitucional do Poder Judiciário na inauguração da República Brasileira, mais especificamente seu órgão de cúpula, o Supremo Tribunal Federal. Após isso, comparará, de maneira breve e sucinta, a atuação do Supremo Tribunal Federal tanto na Primeira, quanto na Sexta República. Por meio de fontes doutrinárias, jurisprudenciais e normativas, buscar-se-á ressaltar a importância do Supremo Tribunal Federal na garantia dos direitos constitucionais, bem como a necessidade da manutenção da harmonia entre os Poderes.
The first records of an invasive land snail Cepaea nemoralis(Stylommatophora: Helicidae) in Central and Southern Ukraine
Authors: Balashov I. , Markova A.
Published: August 2021

Two colonies of an invasive West European land snail Cepaea nemoralis are reported from Kyiv region of Ukraine, as well as a third locality where snails were present in 2019, but no living individuals were found in 2020. One more locality is reported from Odessa City in Southern Ukraine. These localities are the most south-eastern ones for the range of C. nemoralis and are the first known records of this species in Ukraine outside its western regions, with closest previously published confirmed colonies in more than 400 km. Distribution of this species in Eastern Europe is discussed, it is argued that invasion ofC. nemoralis is probably driven by the same processes as invasion of the Spanish slug, Arion vulgaris, that invaded Eastern Europe during the last decades.
Phytochemical Analysis and Acute Toxicity Studies on the Methanol Extract of Securidaca longepedunculata (Fresen) Root Bark in Mice
Authors: Hyellavala Joseph Fomnya
Published: August 2021

The methanol extract of Securidaca longepedunculata root bark was screened phytochemically and its intraperitoneal acute toxicity evaluated in mice. The phytochemical screening was carried out based on standard methods. The Median Lethal Dose (LD50 ) was determined using Lorke’s method while the Maximum Tolerated Dose (LD0 ) was determined by the method described by Mosser and Padilla. The root bark extract revealed the presence of carbohydrates, terpenoids, cardiac glycosides, saponins and flavonoids. The extract produced intraperitoneal LD0 and LD50 values of 6.92 mg/kg and 6.0 mg/kg, respectively. Based on the research findings, the methanol extract of S. longepedunculata root bark was found to contain important phytochemicals which may be attributed to its enormous use in traditional medicine, but it was a highly toxic extract in mice with intraperitoneal LD50 and LD0 values of 6.92 mg/kg and 6.0 mg/kg, respectively.
Prevalence and Antimicrobial Resistance Profile of Listeria monocytogenes from Retailed Fresh Cat Fish and Frozen Fish in Abuja, Nigeria.
Authors: Alu J. A
Published: August 2021

This study investigated the prevalence and antibiotic resistance profile of Listeria monocytogenes from fresh catfish (Clarias species) and frozen raw fish (Mackerel and Herring). A total of 180 samples which comprised 60 units of fresh catfish, mackerel, and herring frozen fish each distributed uniformly across three locations in Abuja, were randomly collected within a period of three months. The samples were analyzed using standard bacteriological methods at the Animal science/bacteriology laboratory, Faculty of Agriculture, University of Abuja. Presumptive isolates were further serotyped using latex agglutination and subjected to antimicrobial sensitivity testing at the Advance Biotechnology laboratory (SHESTCO) Sheda, Abuja. Overall prevalence of L. monocytogenes in this study was 10.6% (n=19/180) distributed across Gwagwalada (20%), Bwari (11.7%) and none in Kwali Area council. The occurrence according to fish types showed 18.3% in mackerel, 10.0% in herring fish while 3.33% was from catfish. There was no statistically significant difference (p>0.05) between the prevalence of Listeria monocytogenes in the fish type studied. Antimicrobial resistance profile indicated high MAR index (≥ 0.4) which revealed a diverse spread of bacterial resistance to antibiotics within the fish population in the study area. This was characterized by 100% resistance of L. monocytogenes isolates to ampicillin and tetracycline while few (5) isolates were susceptible to chloramphenicol (71.5%), streptomycin (61.2%). This finding provides a baseline information on the prevalence and antibiotic profile of L. monocytogenes in catfish and frozen fish in Abuja, Nigeria. Proper hygienic handling of fish during processing and sales is optimum in mitigating the risk of foodborne illness due to L. monocytogenes. Adequate control of antimicrobial agent usage is also recommended to reduce the occurrence and spread of potential multidrug resistance strains.
Current Challenges and Future Research Directions in Augmented Reality for Education
Authors: Iqbal Muhammad Zahid , Mangina Eleni , Campbell Abraham G.
Published: August 2021

Innovation in formal and practical learning is an accepted progression and its adoption in learning methodologies is a sign that a respective society is open to new technologies, ideas, and, thus, to advancement. The latest innovation in teaching is the use of Augmented Reality. Applications using this technology have been deployed successfully in STEM(Science, Technology, Engineering, and Mathematics) education for delivering the practical and creative parts of the education. Since Augmented Reality technology has already a large volume of published studies about education that reports advantages, limitations, effectiveness, and challenges of AR in education, classifying these projects will allow for a review of the success of Augmented Reality integration in the different educational settings and discover current challenges and future research areas.
The main findings of this paper are the generation of a detailed taxonomy of the current literature which outlines the current challenges, the use of this taxonomy to identify future research areas, and finally to report on the development of two case studies that can highlight the first steps need to address these research areas. The result of this research ultimately is to detail the research gap that is needed to be filled to facilitate real-time touchless hand interaction, kinesthetic learning, machine learning agents with a remote learning pedagogy.
Keanekaragaman Artropoda Predator di Agroekosistem Sawah pada Berbagai Galur Padi Politeknik Negeri Lampung
Authors: Budiarti Lina , Kartahadimadja Jaenudin , Sari Miranda Ferwita , Ahyuni Destieka , Dulbari Dulbari
Published: August 2021

Artropoda predator dapat dioptimalkan perannya di ekosistem sawah untuk menekan populasi hama. Tujuan dari penelitian ini adalah untuk menganalisis nilai indeks keanekaragaman artropoda predator pada galur padi rakitan Politeknik Negeri Lampung. Penelitian ini telah dilaksanakan pada bulan Agustus-Desember 2020. Penelitian dilaksanakan di lahan Seed Teaching Farm Program Studi Teknologi Perbenihan, Politeknik Negeri Lampung dengan galur padi Pandan Wangi (PW), Ciherang (CH), B1, B2, B3, B4, B7, D2, D3, F3, F4, H1, H4, K, dan L2 dengan 2 varietas unggul pembanding yaitu Ciherang (CH) dan Gilirang (Gil). Pengamatan artropoda dilakukan menggunakan metode jaring dilakukan sebanyak 3 ayunan ganda. Pengambilan sampel serangga dilakukan pada pukul 06.00- 09.00 WIB. Identifikasi menggunakan makroskop binokuler di Laboratorium tanaman pangan II. Data hasil identifikasi serangga kemudian dihitung nilai indeks keanekaragaman spesies Shannon (H’), indeks dominasi spesies Berger-Parker (d) dan indeks kemerataan spesies dari Pielou (E). Hasil pengamatan menunjukkan bahwa artropoda predator yang ditemukan adalah laba-laba predator seperti Oxyopes javanus, Tetragnatha javana, T. virescens, T. maxilosa, Pardosa pseudoannulata, Athypena sp., dan serangga predator seperti Microvelia douglasi, Agriocnemis pygmaea, A. femina, A. pieris, dan Verania lineata, Menochillus sexmachulatus, Hispella atra, dan Paederus fuscipes. Nilai indeks keanekaragaman pada setiap galur padi fluktuatif dan berkisar dari rendah ke sedang.
Entrevista a Constanza Alarcón
Authors: Acosta Niño Ángela María
Published: August 2021

El presente artículo presenta la entrevista realizada a Constanza Liliana Alarcón, hoy Coordinadora de la Comisión Intersectorial de Primera Infancia de la Presidencia de la República. Adicionalmente promueve la Estrategia de Atención Integral para la Primera Infancia, denominada “De Cero a Siempre”. Constanza habla del origen, desarrollo y avances de la Política Integral de Primera Infancia desde su experiencia en la docencia.
Tareas con sentido: creencias de las docentes de jardin y transición.
Authors: Ñungo Garzón Olga Patricia , Fandiño Cubillos Graciela
Published: August 2021

Este articulo presenta los resultados mas significativos de un trabajo investigativo realizado por las autoras para acceder al Título de Magister en Educación; estudio que surgió con la intención de indagar sobre el sentido de las tareas escolares desde la profundización de procesos y prácticas pedagógicas, enmarcado en la perspectiva del pensamiento del profesor, las necesidades actuales de la niñez en edad preescolar y los diversos contextos familiares, sociales e institucionales en dos instituciones, una del sector oficial y otra del sector público en Bogotá, para los grados Jardín y Transición.
Aprendizaje transmedia en la era de la convergencia cultural interactiva
Authors: Amador Juan Carlos
Published: August 2021

El artículo analiza las posibles relaciones entre el fenómeno transmedia y el aprendizaje en los niños y niñas contemporáneos; partiendo del presupuesto de Jenkins (2008), en el que la transmediación se inscribe en la convergencia mediática y tecnológica, el texto desarrolla tres grandes temáticas: la primera describe los principales aspectos de la convergencia cultural interactiva, contexto en el que se produce este fenómeno; la segunda expone los atributos del proceso transmedia, haciendo énfasis en los ambientes (ecología de medios) y la narrativa interactiva; y la tercera introduce algunas consideraciones, a manera de implicaciones pedagógicas, para fomentar aprendizajes en los niños y niñas, asunto que exige problematizar la noción de nativos digitales.
La axiología subyacente en el lenguaje de las series de dibujos animados presentados en la televisión colombiana
Authors: Castañeda Lozano Yebrail
Published: August 2021

El siguiente artículo tiene el propósito de visibilizar la axiología subyacente en las series de dibujos animados presentados en Colombia. Para realizar el análisis se abordó la serie animada más significativa de cada una de las décadas vistas, y para explorar el marco axiológico ético se abordaron las canciones introductorias de cada serie. En el plano estético se valoró el vestuario, los colores y ademanes, tanto de los héroes como de los superhéroes. El método utilizado se fundamentó en las categorías del gusto de Calabrese: Teratología, Adalidología, Fractales y Entropía.
Escritura e Internet: sentidos del uso del lenguaje de la Internet en los procesos escriturales de los estudiantes de Medellín
Authors: Castellano Ascencio Milton Daniel , Ortiz Ena Luz
Published: August 2021

El presente texto analiza las representaciones de sentido que se generan en los procesos escriturales de los estudiantes de Medellín, influenciados por el uso del Netspeak; el diseño metodológico corresponde a una investigación cualitativa con enfoque fenomenológico. En el artículo se resalta que el Netspeak es un rasgo identitario de los estudiantes medellinenses, pues este lenguaje hace parte de su vida, lo cual justifica que sus producciones escritas lo incorporen con el fin de comunicar distintos sentidos sobre lo cotidiano y sobre su condición de sujetos comunicantes.
Una conversación sobre los nuevos lenguajes desde la Comunicación Educación Entrevista con Jorge Huergo
Authors: Ordóñez Castro Sandra Patricia
Published: August 2021

Con una vasta trayectoria coordinando proyectos comunicacionales y educativos junto a diferentes movimientos sociales y grupos comunitarios, el docente e investigador argentino Jorge Huergo, advierte sobre la importancia de hacer de los medios y las tecnologías en la escuela herramientas narrativas que favorezcan la comprensión de las dinámicas de la cultura, la multiplicación de las voces que la definen, y el protagonismo en su transformación. Superando el entusiasmo por la apropiación técnico-funcional de los nuevos lenguajes tecnológicos, la escuela debe apostar por una perspectiva comunicacional de su uso, potenciando el posicionamiento estratégico del sujeto como gestor de la cultura en la que vive
La interculturalidad: usos y abusos
Authors: Guerrero Rivera Javier
Published: August 2021

El presente artículo muestra de manera crítica tres puntos de enunciación sobre la educación intercultural, con el fin de no incurrir en ellos a la hora de pensar la diferencia y la diversidad en las aulas. Pone de manifiesto sus implicaciones, las posibles confusiones y abusos epistemológicos, en razón a sus trasfondos ideológicos y a la irculación de boca en boca por distintos agentes sociales. Al final, una vez puestos al tanto, se abre la discusión y cada lector, especialmente el profesorado, tendrá la palabra para pensar sus prácticas interculturales“inclusivas”.
Tránsito de la educación especial a la educación inclusiva: sendas diferenciadas en el entorno educativo
Authors: García Ríos Diana Patricia , Jutinico Fernández María del Socorro
Published: August 2021

El objetivo de este trabajo es hacer un recorrido por las diferentes prácticas educativas que han marcado la educación de las personas llamadas diferentes o diversas, especialmente de aquellas en situación de discapacidad. El documento presenta una breve descripción del tránsito de la Educación Especial hacia la Educación Inclusiva, haciendo énfasis en esta última. Para finalizar, plantea algunas reflexiones propias de la formación docente a partir de una perspectiva de reconstrucción social, desde la cual el reto de la educación inclusiva puede ser posible.
La evolución del proceso de privatización de la educación
Authors: Bautista Jairo Alonso
Published: August 2021

El artículo presenta una revisión de los principales argumentos y conceptos que han viabilizado los procesos de privatización de la educación, la presentación de los argumentos recorre las principales escuelas teóricas y enfatiza en la importancia del concepto de eficiencia como punto de arranque de toda la argumentación en favor de la privatización. El objetivo del documento es señalar el origen y dirección de los argumentos en favor de la privatización educativa.
Coeducación y educación diferenciada. Una opción por la igualdad de género en la escuela pública mixta
Authors: Páez Martínez Ruth Milena
Published: August 2021

¿De qué manera la perspectiva coeducativa favorece la educación en igualdad de género en estudiantes de la básica secundaria de un colegio mixto en Bogotá? Esta pregunta direccionó la investigación gestada con la idea de mejorar la convivencia y el rendimiento académico. Los resultados advirtieron que una escuela mixta per sé no es garantía de una educación igualitaria, por tanto, se requiere de perspectivas como la coeducación y la educación diferenciada. Con ello, es posible que procesos convivenciales y académicos se mejoren siempre que haya una labor intencionada, de acompañamiento e intervención.
El relato desde el cuerpo: una práctica creativa para indagar por el maestro y preguntarse por la escuela
Authors: Villalba Labrador Raimundo
Published: August 2021

Ante los discursos y prácticas hegemónicas que circulan en el contexto escolar se propone el relato desde el cuerpo como práctica analítica y creativa para indagar por el  maestro y preguntar por la escuela. En los maestros se van encarnando los discursos y las prácticas cuya reproducción define el estilo y la manera como se habita la escuela, comúnmente, desde prácticas de poder y control. Relatar desde el cuerpo evidencia este tipo de relaciones encarnadas en los sujetos y posibilita ver la diversidad y la diferencia, que contribuirán a pensar de otra manera la escuela.
Narrativas del desencuentro entre los jóvenes y la escuela secundaria
Authors: Rodríguez Mc Keon Lucía Elena
Published: August 2021

Este artículo tiene como propósito mostrar algunas evidencias en torno al proceso de desencuentro  que hoy día se vive entre los jóvenes y la escuela. Después de haber realizado una investigación cualitativa en una escuela secundaria general de turno matutino ubicada en el Distrito Federal que, por los resultados académicos que obtiene y su normativa, es considerada como una buena escuela, se analizan las narrativas de los estudiantes para relevar algunas de las contradicciones existentes entre las necesidades y demandas de la población estudiantil y el tipo de estrategias formativas que aún son comunes en la práctica educativa cotidiana.
La movilización por la primera infancia en Bogotá: Una apuesta desde las prácticas artísticas, la política pública y la gestión cultural
Authors: Piñerúa Naranjo Santiago
Published: August 2021

En principio, es necesario aclarar que el presente no es un texto con fines políticos, sino un llamado a los educadores, cultores y gestores culturales a comprender su labor como un acto político y una responsabilidad para con su entorno. Para hacerlo, se utilizan dos ejemplos que podrían permitir el desarrollo de puentes  entre la educación artística, la gestión cultural y los campos del conocimiento que no relacionamos habitualmente.
El arte como recreación del presente
Authors: Ordóñez Castro Sandra Patricia
Published: August 2021

Entrevista  a María de la Paz Jaramillo, una de las principales representantes del movimiento expresionista en Colombia, se relata  su experiencia  desde el momento  en que descubre su vocación  y posteriormente su formación en el arte. Además se realiza un recorrido lo largo   de su vida  mostrando los reconocimientos obtenidos y la manera como  influye la realidad  en la creación de  su obra. Finalmente  se aborda la importancia que tiene la enseñanza y la promoción de las expresiones artísticas en la formación de la sociedad .Entrevista  a María de la Paz Jaramillo, una de las principales representantes del movimiento expresionista en Colombia, se relata  su experiencia  desde el momento  en que descubre su vocación  y posteriormente su formación en el arte. Además se realiza un recorrido lo largo   de su vida  mostrando los  reconocimientos obtenidos y la manera como  influye la realidad  en la creación de  su obra. Finalmente  se aborda la importancia que tiene la enseñanza y la promoción de las expresiones artísticas en la formación de la sociedad .
Maestros en Colectivo. Una década de actividad pedagógica
Authors: Maestros en Colectivo Maestros en Colectivo
Published: August 2021

Este artículo de experiencia es una apuesta por describir el proceso de gestación y los retos y alcances logrados, en más de una década, por el equipo de investigación pedagógica Maestros en Colectivo, grupo constituido por docentes pertenecientes a la escuela pública y preocupado por explorar, reflexionar y proponer alternativas frente a lo que sucede en los Ambientes de Aprendizaje en el Aula. Sutrabajo ha favorecido la producción de saber pedagógico, la transformación de las prácticas,la autoformación pedagógica, el encuentro discursivo, la cualificación del trabajo delmaestro y la posibilidad de constituir nuevas formas de pensar al maestro y a la escuela en su totalidad.