bluuebunny/crossref_metadata_2025 huggingface dataset:
Resenha da Websérie: Análise do Discurso com Michel Foucault – Episódio 01 – Quem somos nós hoje?
Authors: Da Silva Marcus Vinícius
Published: November 2021

Trata-se de uma resenha do episódio 01, intitulado “Quem somos nós hoje?, da websérie Análise do Discurso com Michel Foucault, idealizada e publicada em 2016,  protagonizada pela Profa. Dra. Maria Rosário Valencise Gregolin (UNESp-Araraquara), em parceria e produção, com o Grupo de Estudos em Análise do Discurso (GEADA/UNESp) e o Grupo de Estudo de Mediações, Discurso e Sociedades Amazônicas (GEDAI/UFPA). Neste episódio, Gregolin (2016) apresenta aos expectores um breve panorama da obra de Michel Foucault, abordando aspectos constitutivos da sua obra, a qual é dividida em três momentos, a saber: Arqueologia do Saber, Genealogia do Poder e Genealogia da Ética. Outrossim, discorre sobre as contribuições do teórico o campo de investigação da Análise do Discurso, ampliando o debate sobre as pesquisas linguísticas realizadas no Brasil, sob o viés dos estudos discursivos foucaultianos.
Roads less travelled
Authors: Wixson Karen
Published: November 2021

My life and career can be characterized as a series of roads less travelled. I began my academic journey as a woman with family responsibilities at a time when the academy was largely dominated by men and women were expected to know their place. I pursued service-oriented scholarship in an environment that favored more basic research. I was unexpectedly thrust into the policy arena as a result of my scholarly pursuits. I became a dean when I had never aspired to this type of leadership. The following describes my journey on these roads and the lessons I learned along the way.
Comparing public support for wildlife protection and climate protection
Authors: Krajhanzl Jan , Chabada Tomáš
Published: November 2021

In this study we provide a detailed analysis and comparison of the public support for climate protection and wildlife protection using nationally representative data from the Czech Republic. The results of regression analyses have shown that support for both protections is significantly increasing with growing pro-environmental beliefs of people, leisure time they spent in nature and their altruism. Support for climate protection also rises with higher election participation, left-wing political orientation and younger age. Support for wildlife protection increases with growing trust in non-profit organizations while decreases with growing trust in science & research institutions. The comparison of groups defined according to their consent with climate protection and wildlife protection showed that support for wildlife protection can be characterized as a more inclusive environmental attitude than support for climate protection. The paper discusses the implications of these findings for protagonists of environmental politics and ways how they approach the public.
Phenotypic variation and traits interrelationships in bread wheat (Triticum aestivum L.) genotypes in Northern Ethiopia
Authors: GETACHEW Ahmed , WOREDE Fisseha , ALAMEREW Sentayehu
Published: November 2021

Information on phenotypic variation helps to breed better varieties. Forty-nine bread wheat genotypes were evaluated in simple lattice design at Jamma and Geregera to determine the extent of variation and association among 11 traits. Analysis of variance showed significant differences (p < 0.01) among the genotypes for all traits, indicating the presence of adequate variability. Maximum values of genotypic coefficients of variation were recorded for spike length (8.66 %), number of productive tillers (8.4 %), number of grains per spike (6.4 %) and thousand-seed mass (6.15 %); this also shows the presence of substantial variability for these traits. Genetic parameters of the study revealed that days to heading, plant height, spike length, number of grains per spike and thousand-seed mass had moderate to high heritability and genetic advance as percent of the mean. Therefore, direct selection could be practiced to improve bread wheat for these traits. Moreover, selection of early-cycle lines which can escape the negative effects of climate change will be possible. Grain yield had strong and significant positive correlation with thousand-seed mass (rg = 0.395**), biological yield (rgv= 0.617**) and harvest index (rg = 0.731**); selection based on these traits will be most effective in future bread wheat yield improvement programs as they also exerted strong positive direct effects on grain yield.
Preferences in selection and planting types of roses (Rosa spp.) in urban public and semi-public areas: a case study of Bežigrad community, Ljubljana
Authors: KUNC Nina , SCHMITZER Valentina
Published: November 2021

Roses have an indisputable leading role in private gardens. They also appear in public areas. They are very interesting plants for public urban areas because they represent aesthetic, ecological, tehnical and sociological potential. In public areas varietes are selected according to various criteria such as resistance to heat, low temperatures an drought, repetitive flowering and ease of maintenance. The aim of our study is to present preferences in the selection of groups of roses, their colors, types of plantings, the abudance of roses in planting and the height of individual roses on difrent subtypes of public ans semi-public green areas of the Bežigrad community, Ljubljana. The results of the study showed that the most comomn roses in urban public areas are floribundas. Dominated type of planting is a few plants together in a group. In neighborhoods and block settlements are dominated individual plants. The most common color of roses is red. In urban public areas are planted only roses up to 1 m height. In semi-public areas are also higher roses. The abudance of roses in semi-urban areas varies from 1 to over 30 roses in planting. In urban public areas are most common planting with 10 to 20 roses and those with more than 30 roses.
Phenolic contents, antioxidant activity and colour density of Slovak Pinot Noir wines
Authors: ČERYOVÁ Natália , BAJČAN Daniel , LIDIKOVÁ Judita , ŠNIRC Marek , TREBICHALSKÝ Pavol , BERESECKÁ Janka , HORVÁTHOVÁ Jarmila
Published: November 2021

Recent studies show that wine contains more than thousand different compounds that could come from grapes, or could be formed in the process of winemaking and maturing. The most abundant compounds in wines are polyphenols, which affect sensory properties such as colour, taste and aroma, but also has antioxidant properties. The aim of this study was to determine total polyphenol and total anthocyanin contents, and to evaluate antioxidant effects and wine colour density of red wines ‘Pinot Noir’ produced in Slovakia. Thirteen analysed, bottled, quality dry ‘Pinot Noir’ wines with origin in various Slovak wine regions were purchased in retail network, to provide that analysed samples of wine would have the same properties as wines that are consumed by common consumers. The content of total polyphenols in analysed ‘Pinot Noir’ wines ranged from 1458 to 3324 mg GAE l-1, while contents of total anthocyanins ranged from 43.6 to 279.6 mg l-1. Antioxidant activities ranged from 80.2 % to 85.3 % inhibition of DPPH and wine colour density ranged from 0.679 to 1.495. The highest total polyphenol content, total anthocyanin content, and wine colour density was determined in wines from the south Slovakia winegrowing region, while the highest antioxidant activity in wines from Nitra winegrowing region. Results did not show significant differences among studied parameters in wines from different winegrowing regions. Results showed that Slovakian ‘Pinot Noir’ wines have characteristics comparable with ‘Pinot Noir’ wines from other countries.
WEB CIBERSECURITY - Danger of PHP Code Injection Vulnerability
Authors: Brandao Pedro Ramos
Published: November 2021

This work demonstrates that the use of laboratories for the development of curricular work in the area of information technology exclusively supported by cloud computing technology does not decrease the level of learning and assessment objects on the part of students. This scenario arose due to the need to interrupt face-to-face classes in physical laboratories due to the COVID-19 Pandemic. The study had as universe a master's degree in Computer Science.
Control of following Force in Gimbal Suspension by Programmed Transfer of Vehicle in the Class of Spiral-Screw Trajectories
Authors: V.V Kravets , Vl.V Kravets , V.V. Artemchuk
Published: November 2021

The programmed transfer of the transport vehicle in space is carried out in the class of helical trajectories, using forcing (throttling) and deviation of the following driving force in the gimbal. The paper introduces the mathematical models of the transport vehicle kinetics in space in the terrestrial reference system and in the basis of the natural trihedral of the trajectory, using the quaternion form. The kinematics of the transport vehicle in the fixed and mobile reference systems, as well as the orientation of the natural trihedral in the inertial space, are represented by the hodograph of the program helix trajectory in vector and quaternion forms. The components of the controlling driving force in the basis of the natural trihedral are determined by the kinetostatics equations of the programmed transfer of the transport vehicle along a helical trajectory in the required speed mode. The authors proposed a structural scheme of the gimbal suspension, providing the required driving force components. The authors considered two possible sequences of rotations of the moving gimbal rings and demonstrated their equivalence. Laconic formulas are established for the control angles of rotation of the moving gimbal rings.
A Web-Based Medical Appointment Scheduling with SMS Alert Notification System
Authors: Ele Bassey , J. A. Odey, , N. E. Frank, , I. M. Ekinya,
Published: November 2021

Lengthy waiting times for registering and booking an appointment to see a doctor is challenging in Nigeria, particularly in government hospitals. Also, missed healthcare appointments are the main cause of preventable incompetence that affects a patient’s wellbeing and medication results, as there is no machinery to notice patients when appointments are deferred or canceled. To address these issues, a web-based medical appointment scheduling system with SMS alert notification using the University of Calabar Teaching Hospital (UCTH) as a case study is proposed.  This study adopted the Structured System Analysis and Design Methodology in the development of the system. MySQL was used to design the database for this study and the proposed system was implemented using PHP programming language. A web-based medical appointment scheduling with an SMS alert notification system was developed and implemented in this study. The developed system will improve appointment scheduling in hospitals to simplify patients' and doctors’ tasks and eliminate missed appointments with the help of the reminder component. In the upcoming, the system can be developed to direct appointment applications to another hospital where doctors with similar medical proficiency are working. Furthermore, the provision of automated SMS alerts as notifications as the appointed day draws near or reaches is a fundamental characteristic of the developed system.
Dlaczego nie ma taśm z powstania wielkopolskiego?
Authors: Hendrykowski Marek
Published: November 2021

The article is a monographic study of the moving picture of Wielkopolska Uprising 1918–1919. The author indicates the reasons of a lack of film archives concerning Posnanian War.
Ogrody Keplera – Ars Electronica 2020
Authors: Myoo Sidey
Published: November 2021

The article presents the content shown at the “Festival of Art, Science and Society - Ars Electronica 2020”, which is organized annually in Linz. The focus was on the awarded and distinguished artistic works, taking into account their interpretation and the workshop in which they were created. In the article are presented i.a. such works of art as computer animation, network art, artificial intelligence art, hybrid art or bioart, which was briefly interpreted in relation to the currently being developed technologies and social contexts that accompanies it. The text was written as a result of the author’s personal participation in the festival, which also allowed to take into account the differences between the festival held mostly by web, as it was in 2020, compared to the stationary participation in it, as it was in previous years.
Roman oil lamps with peltae relief on base. New evidence from Apsaros (Gonio, Georgia)
Authors: Jaworska Maria
Published: November 2021

Discovery of two lamps at the Roman fort of Apsaros (Gonio, Georgia) offers further insights concerning adaptation of the pelta motif on Roman lamps. Inquiry into the nature of the ornaments on the base – previously unknown in Colchis – leads to conclusions about the possible influx of goods to the fort located on the outskirts of the Roman Empire.
W cieniu Jowisza Dolichenusa, Ojca Libera i Mitry, rec. książki: Csaba Szabó, Sanctuaries in Roman Dacia Materiality and Religious Experience
Authors: Jarych Adam Jakub
Published: November 2021

Csaba Szabó, Sanctuaries in Roman Dacia Materiality and Religious Experience
Z latrynami w tle, rec. książki: Andrzej Wypustek, Imperium szamba, ścieku i wychodka. Przyczynek do historii życia codziennego w starożytności
Authors: Mrozewicz Leszek
Published: November 2021

Z latrynami w tle, rec. książki: Andrzej Wypustek, Imperium szamba, ścieku i wychodka. Przyczynek do historii życia codziennego w starożytności
Kapitalist Devletler Ekolojik Krizle Neden Covid-19’la Olduğu Gibi Savaşmazlar? Pandemiye politik ekolojik bir yaklaşım
Authors: Ertekin Aybala
Published: November 2021

Covid-19 virüsüyle mücadele tecrübesi, devletlerin ekolojik krize karşı savunmasız olduğunu göstermiştir. Bir seneyi aşkın süredir kontrol altına alınamayan bu salgın karşısında kapitalist devletler önlem alabilmek için geleneksel eylem repertuvarının dışına taşan bazı politikalar üretmiştir. Öte yandan kapitalist devletlerin, ekolojik kriz bağlamında değerlendirilmesi gereken Covid-19 pandemisine karşı gösterdiği tepkiyi ekolojik kriz ile ilişkilendirilen diğer gündemlerde göstermediği tespit edilebilmektedir. Karmaşık bir ilişkiler ağı ortaya koyan kapitalizm, devlet, insan ve doğa ekolojik bir perspektifle ele alındığında, pandemi ve ekolojik kriz karşısında devletlerin tercihlerinin niteliği ve nedeni dikkat çekici olmaktadır. Çalışma bu sorunu irdelemek adına politik ekoloji perspektifinden hareketle üç hipotez sunmaktadır: Birincisi, koronavirüs pandemisi bir sağlık krizi olmanın yanı sıra ekolojik krizdir, bu iki krizi ayrıştırmak politik bir tercihtir. İkincisi, kendi başına pandemi gündemi devletlere kendi otoritelerini konsolide etmek anlamında ekolojik krizden farklı olarak bir politik araçsallaştırma imkânı sunmaktadır. Üçüncüsü, Covid-19’un yayılımını engelleyip kontrol altına alma yönündeki politika değişiklikleri, çeşitli sınıfsal ittifaklar aracılığıyla kapitalist sistem ve devletin devamlılığını sağlıyorken, ekolojik kriz ile eşitlikçi bir mücadele kapitalist sisteme meydan okumayı dayatmaktadır.
Sustainability of the Bank of Japan’s ETF Purchasing Policy
Authors: Harada Kimie
Published: November 2021

The Bank of Japan is the only central bank that holds enormous amounts of stocks of listed companies by purchasing ETFs via its unconventional monetary policy measures. The Bank of Japan has been buying ETFs for more than a decade and, seemingly, has no awareness that it has become a huge investor in the stock market. This article explains how this policy has potentially distorted market mechanisms and how it is difficult to find an exit strategy.
Hegel’s Antigone: The Birth of the Constitution from the Spirit of Tragedy
Authors: Gragl Paul
Published: November 2021

Sophocles’ Antigone has been studied intensely for more than two thousand years, but it was especially Hegel’s allegorical use of this tragedy in several of his works (first and foremost the Phenomenology of Spirit) that added yet another fascinating facet to its possible reading: the birth of the legal order and therewith a constitutional system from the conflict between two normative orders. In this contribution, I interpret the dialectic structure of Antigone in a manner in which each normative position – both Antigone’s and Creon’s – are equally justified and thereby antithetic in the ethical world of the Greek polis. It is therefore only by transcending this tragic conflict between the human and the divine orders that we can transform necessary externalities (‘fate’) into a process of a legal status which eventually allows individuals to become the authors of the law itself and thus to guarantee their freedom. I denote this reading of Hegel’s Antigone as ‘symmetrical’, since it accepts both positions – Antigone’s divine law and Creon’s human law – as equal and makes freedom and justice only possible through the law. This means that an ‘asymmetrical’ reading, giving prevalence to either position (for instance, found in Goethe or Habermas) and localizing freedom and justice beyond the law, can never effectively result in a legal status that would allow individual persons to become legal persons.My principal argument consequently is that only a symmetrical view of this normative conflict can justifiably be regarded as making a constitutional order possible in the first place. It is feasible only in a dynamic-genealogical fashion (ie, by constantly generating this order through conflict and the transcending of this conflict through mutual recognition) that concurrently also respects individuals as particular individuals, not just as formal equals among equals, by allowing them to realize their personalities and to find themselves through the arts, science, and philosophy. This is more than a merely formal or negative constitution which recognizes every person as equal and free, but disregards their particularities; this is a material and positive constitution that can guarantee both equality and self-actualization. Such a constitutional order guarantees an identity of universal laws and individuality, and accordingly offers individuals a solution to the conflicting ethical orders of the ancient polis in which they would otherwise remain trapped.
Towards a dialogical archaeology: an Andean perspective on hermeneutics, interpretation and politicalpraxis
Authors: Vaquer José María , Pey Laura
Published: November 2021

Taking a geopolitical perspective centred in the Argentinian Andes, the authors propose a hermeneutical view of dialogical archaeology. The application of this theoretical and methodological approach to the example of the archaeological site of Huayatayoc (Puna de Jujuy, Argentina) enables an interpretation of the site as a complex woven fabric of diachronic local and scientific practices and narratives. The authors’ work at Huayatayoc provides an example of the potential of this approach for the development of a critical Latin American archaeology, which seeks to acknowledge the multiple interests and narratives of researchers and local communities in dialogue.
A Framework to Guide Practitioners for Selecting Metrics During the Countermovement and Drop Jump Tests
Authors: Bishop Chris , Turner Anthony , Jordan Matt , Harry John , Loturco Irineu , Lake Jason , Comfort Paul
Published: November 2021

Researchers and practitioners have highlighted the necessity to monitor jump strategy metrics and the commonly reported outcome measures during the countermovement jump (CMJ) and drop jump (DJ) tests. However, there is a risk of confusion for practitioners, given the vast range of metrics that now seem to be on offer via analysis software when collecting data from force platforms. As such, practitioners may benefit from a framework that can help guide metric selection for commonly used jump tests, which is the primary purpose of this article. To contextualize the proposed framework, we have provided 2 examples for how this could work: one for the CMJ and one for the DJ, noting that these tests are commonly used by practitioners during routine testing across a range of sport performance and clinical settings.
Postrehabilitation Considerations for Individuals With Temporomandibular Disorders
Authors: Olivencia Ovidio , Kaplan Kelby , Dreger Melissa , Veloz Michael , Kais Alexander , Marlowe Katya
Published: November 2021

Temporomandibular disorders (TMDs) encompass a multitude of signs and symptoms that arise from dysfunction of the muscles of mastication (eating), temporomandibular joint tissues, and associated anatomical structures. TMDs are recognized as a significant cause of orofacial pain, presenting in approximately 5–12% of the general population. TMDs are also common in sports with an estimated lifetime prevalence ranging from 11.7 to 77.8% of the athletic population. Basketball, handball, hockey, water polo, and swimming carry the highest risk. Given the prevalence of TMDs in the athletic and nonathletic population, there is a high likelihood that strength and conditioning (S&C) specialists will encounter individuals with TMDs. Thus, this article aims to provide the S&C specialist with an overview of the pathology and the management of TMDs with an emphasis on postrehabilitation exercise programming and self-management.
Physical Determinants of Golf Swing Performance: Considerations for Youth Golfers
Authors: Shaw James , Gould Zachariah I. , Oliver Jon L. , Lloyd Rhodri S.
Published: November 2021

In the sport of golf, club head speed has been associated with higher skill levels in golfers and lower overall scoring. Research has shown that club head speed is an important measure of golf swing performance that can be enhanced with appropriate strength and conditioning interventions. Understanding the determinants of club head speed can help inform the design of testing batteries for talent identification and talent development of youth golfers. This review aims to highlight the current literature surrounding the biomechanical and physical determinants of golf swing performance and to examine the available tests that can be used to test these determinants in youth golfers.
Preparation and Experimental Investigation on Mechanical and Tribological Performance of Hemp-Glass Fiber Reinforced Laminated Composites for Lightweight Applications
Authors: Arpitha G. R. , Verma Akarsh , Sanjay M. R. , Siengchin Suchart
Published: November 2021

Fiber reinforced polymer composites have attracted attention globally because of their improved properties. These composites makes the fabrication easy; they are easily available and biodegradable in nature. They can be used in various applications like door panels, toys, roofs, furniture, aerospace, and many more. In this work, hemp and glass fibers are utilized as the reinforcement material, and epoxy is used as the matrix material; and by varying the sequence of the fibers, three different types of laminates are prepared. Laminates are prepared by using the hand layup method followed by the vacuum bagging process. Mechanical properties like flexural, tensile, hardness, and impact properties are evaluated in this article. The dry sliding wear behavior of three different laminates is carried out with pin on disk by varying time, speed, and load. Morphological study of specimens was also done with the help of scanning electron microscopy. From the results, it was observed that the neat epoxy resin properties can be enhanced by the hybridization with hemp and glass fibers. Mechanical properties of these fiber reinforced composites are improved because of the addition of hemp fiber in the laminate sequence. It was also observed that the wear properties of samples are significantly influenced by the applied load, speed and time.
Tribological Performance of Copper-Titanium Alloy under Dry Sliding Contact
Authors: Bachchhav B. D. , Bagchi H.
Published: November 2021

Frictional heating leads to sparking and excessive wear of components in engineering applications. Until now, copper-beryllium alloys have been used extensively in frictional contacts where nonsparking ability is desired. However, copper-beryllium creates an inhalation hazard when there is exposure to the dust or fumes from beryllium metal, metal oxides. Besides nonsparking ability, an environmentally friendly alternate material having equally good electrical and tribo-mechanical properties needs to be developed. In achieving the objective of this article, tribological properties of copper titanium alloy as an alternative under dry sliding contact were investigated and compared. Experiments were conducted on copper-titanium alloy having 2 % and 4.2 % titanium sliding against an EN-31 disk using a pin-on-disk apparatus. Taguchi-based design of experiments was used to find out significance of parameters and their effect on friction coefficient and wear rate. The microstructure was studied for distribution of titanium powder in alloy and its effect on grain distribution vis-à-vis tribo-properties using scanning electron microscopy analysis. It was found that the coefficient of friction decreases as titanium concentration and velocity increase. Titanium concentration has a significant effect on reducing wear. Results are indicative for potential use of copper-titanium alloy instead of copper-beryllium alloy. Because copper-titanium is a more recent material, its tribological properties are yet to be researched. Apparently, hardly any literature is available exclusively in this type of application.
PM20D1 is a circulating biomarker closely associated with obesity, insulin resistance and metabolic syndrome
Authors: Yang Ranyao , Hu Yue , Lee Chi Ho , Liu Yan , Diaz-Canestro Candela , Fong Carol Ho Yi , Lin Huige , Cheng Kenneth K Y , Pravelil Aparna Padmanabhan , Song Erfei , Lam Karen S L , Xu Aimin
Published: November 2021

Objective

Peptidase M20 domain containing 1 (PM20D1), a secreted enzyme catalysing condensation of fatty acids and amino acids into the bioactive lipids N-acyl amino acids (NAAA), induces uncoupling protein 1 (UCP1)-independent adaptive thermogenesis in brown/beige adipocytes in mice. This study aimed to explore the associations of the circulating levels of PM20D1 and major NAAA with obesity-related metabolic complications in humans.

Design and methods

Serum concentrations of PM20D1 and NAAA (C18:1-Leu and C18:1-Phe) in 256 Chinese subjects, including 78 lean and 178 overweight/obese individuals with or without diabetes, were measured with immunoassays and liquid chromatography–mass spectrometry, respectively. The impact of sulfonylurea and rosiglitazone on their circulating levels was examined in 62 patients with type 2 diabetes.

Results

Serum PM20D1 level was significantly elevated in overweight/obese individuals and was closely associated with circulating levels of C18:1-Leu and C18:1-Phe. Furthermore, serum PM20D1, C18:1-Leu and C18:1-Phe concentrations correlated positively with several parameters of adiposity as well as fasting and 2 h postprandial glucose, HbA1c, fasting insulin and HOMA-IR independent of BMI and age. Moreover, a significant elevation in PM20D1, C18:1-Leu and C18:1-Phe concentrations corresponding with increases in the number of components of the metabolic syndrome (MetS) was observed. Treatment with sulfonylurea significantly decreased circulating PM20D1, C18:1-Leu and C18:1-Phe in patients with type 2 diabetes.

Conclusions

Increased serum levels of PM20D1 and its catalytic products NAAA are closely associated with obesity-related glucose dysregulation, insulin resistance and MetS and can be potentially used as clinical biomarkers for diagnosing and monitoring these disorders.
Nanostructures on the ZnSe Surface: Synthesis, Morphological and Photoluminescent Properties
Authors: Suchikova Y. , Lazarenko A. , Kovachov S. , Bohdanov I.
Published: November 2021

Nanostructured zinc selenide has been obtained by electrochemical etching with an H2SO4:H2O:H2O5OH=4:1:1 solution used as the electrolyte. The experiment has indicated that the surface consists of two phases, namely the upper layer made up of a dense oxide film and a low-sized porous layer underneath, with a pore diameter of (30-80) nm and a thickness of interporous walls of (15-50) nm. The investigated dependence of surface porosity on the etching time allows us to explain the main stages of the crystal’s electrochemical dissolution during anodizing. The experiment has indicated the presence of three main stages, such as the formation of the Gouy and Helmholtz layers at the semiconductor/electrolyte segregation; pore formation at defect and oxide crystallite locations; spontaneous pore formation. The PL spectra of the samples under study have demonstrated three maxima. The emission band at 2.45 eV is attributable to the presence of oxides, the band at 2.78 EV can be accounted for the corresponding excitons while the band at 2.82 eV stems from quantum-dimensional effects. Chemical analysis of the samples has also indicated the presence of oxides on the surface of the nanostructure.
La innovación que caracteriza a los emprendedores en Colombia. ¿Aplica a la hora de diseñar su tipo de organización?
Authors: Castaño Martínez Camilo , González Santos Diana
Published: November 2021

Múltiples son las iniciativas de emprendimiento que atienden la demanda actual de los mercados, estas, deben garantizar un crecimiento sostenible amparado por los modelos de innovación social inyectados en sus modelos de negocio. El crecimiento anteriormente citado debe estar soportado por la adecuada gestión del capital humano, variable que juega un papel protagónico en la continuidad del emprendimiento. El presente documento pretende enlazar el modelo de emprendimiento, innovación y tipo de organización desarrollado por 19 emprendedores en la ciudad de Bogotá en los meses de octubre y noviembre del año 2017, el análisis de las variables que determinan el tipo de organización concebida en cada una de sus iniciativas.
Semilleros de investigación en educación virtual
Authors: Castiblanco Sandra Patricia , López Urrea Luis Francisco
Published: November 2021

Los retos que la educación basada en ambien- tes virtuales de aprendizaje impone a las insti- tuciones educativas que incorporan programas bajo mediación virtual, exigen construir con los estudiantes un escenario de promoción de la investigación científica que se conjugue con la realidad en la que se encuentran inmersos. Así, limitaciones como la falta de espacios de interacción y socialización de resultados, la relación limitada con los líderes de semilleros, las dificultades de conectividad que pueden afrontar los integrantes del grupo que se en- cuentran ubicados en municipios con escasa infraestructura tecnológica, son algunas de las limitaciones que el trabajo en semilleros, bajo mediación virtual, implican para quienes pro- movemos la participación de estudiantes en los grupos de investigación de las universida- des. Teniendo en cuenta lo anterior, se exponen las condiciones bajo las cuales se desarrolla la propuesta de semilleros de investigación con los estudiantes del programa de Ingeniería de Sistemas, modalidad virtual de la Fundación Universitaria del Área Andina.
Emprendedoras de la localidad de Chapinero innovan con un modelo de negocio social
Authors: Castaño Martínez Camilo Antonio , Restrepo de Peña Blanca Rosa
Published: November 2021

Los resultados de la investigación se encaminan a identificar un modelo de negocio para orientar las ideas emprendedoras, nacientes y establecidas, hacia la creación de valor e innovación en un grupo de siete mujeres, dedicadas a desarrollar negocios de artesanías, bisutería y alimentos. A partir de la metodología de investigación acción aarticipativa, se benefició el grupo con un programa de capacitación y orientaciones de trabajo práctico, en diversos temas conducentes a mejorar las actividades del negocio individual. Con la identificación inicial, de intereses colectivos y necesidades de gestión de los emprendimientos, se realiza la caracterización del grupo de emprendedoras en la que se reconocen las dificultades de los negocios. Teniendo en cuenta la orientación de expertos, en paneles como fuente primaria, los análisis de las teorías, los modelos de negocios analizados por el equipo de investigación, se determinaron las principales variables para definir una propuesta de modelo de negocio, para los emprendimientos de la localidad de Chapinero.
Organizadores gráficos: estrategia didáctica en ambientes virtuales mediada por la identificación de estilos de aprendizaje
Authors: Silva Monsalve Alexandra María , Sandoval Serrano Marcos Alejo
Published: November 2021

Los bajos niveles académicos en ciencias básicas de programas de ingeniería son un factor de incidencia en la deserción, razón por la cual el objetivo de la investigación se orientó a indagar sobre estrategias de enseñanza - aprendizaje para docentes y estudiantes, y así mitigar las causas de pérdidas en espacios académicos. Inicialmente se identificaron estilos de aprendizaje donde se hizo evidente el uso de los organizadores gráficos como estrategia didáctica de enseñanza aprendizaje en ambientes virtuales de aprendizaje (AVA), que la mayoría de los estudiantes ubicó en el aprendizaje visual. Metodológicamente la investigación se sitúa en el contexto educativo, aplicando técnicas e instrumentos tanto cuantitativos como cualitativos; la muestra del estudio corresponde a estudiantes de lógica matemática. Los resultados mostraron aspectos relevantes para el mejoramiento del aprendizaje de los sistemas numéricos, especialmente en la conversión. Los hallazgos establecieron los organizadores gráficos como una estrategia de consolidación de aprendizajes en la enseñanza de las matemáticas para programas de ingeniería en AVA.
Utilization of xylan-rich steam explosion liquid from processing of poplar for hydrogel synthesis
Authors: Wang Huimei , Liu Zhong , Hui Lanfeng , Ma Lan , Wang Xiaodi , Zhang Bianzhi
Published: November 2021

A high-performance hydrogel was successfully fabricated using xylan-rich concentrated steam explosion liquid (CSEL). The method used was a free-radical graft copolymerization of acrylic acid (AA) and acrylamide (AM) onto a primarily xylan backbone in CSEL, with a redox system of ammonium persulfate/anhydrous sodium sulfite as the indicator and N,N`-methylenebisacrylamide (MBA) as the cross-linker. The effects of independent parameters (the dosages of the indicator, AM, AA, and the cross-linker) on the swelling ratio of the as-prepared hydrogel were studied via an optimal design of the response surface methodology (RSM). Under the optimal conditions (80.9 mg of initiator, 349.6 mg of AM, 988.7 mg of AA, and 9.39 mg of cross-linker), the swelling ratio of the prepared hydrogel (Xyl-AM-co-AA) was 276.6 g/g, which was close to the predicted value (255.7 g). The swelling behaviors of Xyl-AM-co-AA at different temperatures and pH values were also analyzed. The results showed that the swelling ratios varied at different temperatures and pH values, implying their potential use as smart materials. Analysis by Fourier transform infrared spectroscopy and scanning electron microscopy confirmed the cross-linked and hygroscopic behavior of Xyl-AM-co-AA.
Optimization of sulfonated chemi-mechanical pulping of palm oil empty fruit bunch using response surface methodology
Authors: Ping Yang , Liu Kai , Lyu Peiqi , Mo Lihuan , Li Jun
Published: November 2021

In order to optimize the sulfonated chemi-mechanical pulping of palm oil empty fruit bunch, the response surface methodology was employed. It was intended to determine the optimum level of sodium sulfite dosage, sodium hydroxide dosage, maximum cooking temperature, and cooking time at the sulfonation stage, and their influences on paper sheets properties were analyzed. An optimum compromise was obtained, and the sodium sulfite dosage, sodium hydroxide dosage, maximum temperature, and cooking time were 18%, 4%, 155 °C, and 100 min, respectively. The density, bursting strength index, tensile strength index, and tearing strength index were 0.5622 g/cm3, 2.60 kPa·m2/g, 45.01 N·m/g, and 7.53 mN·m2/g, respectively.
 New records of two teleost species from two insular areas of the western equatorial Atlantic
Authors: Soares Rodrigo Xavier , Amorim Karlla Danielle Jorge , Borges Amanda Torres , Molina Wagner Franco , Garcia Júnior José
Published: November 2021

We report the first record of two teleost species from two archipelagos in the western equatorial Atlantic. We recorded the occurrence of Cantherhines pullus (Ranzani, 1842) (Monacanthidae, Tetraodontiformes) from the Fernando de Noronha Archipelago, a group of volcanic islands 345 km off the northeastern coast of Brazil. We also report the first regional record of Hemiramphus brasiliensis (Linnaeus, 1758) (Hemiramphidae, Beloniformes) from the Saint Peter and Saint Paul’s Archipelago, which is a small and isolated group of rocky islands 520 km from the Fernando de Noronha Archipelago on the Mid-Atlantic Ridge.
MODULATION OF CULTURE MEDIUM ON THE EX SITU CONSERVATION OF Neoregelia mucugensis Leme (BROMELIACEAE)1
Authors: LIMA ANDRESSA PRISCILA PIANCÓ SANTOS , BASTOS FERNANDA DE JESUS OLIVEIRA , LIMABRITO ALONE , FERNANDES GILÊNIO BORGES , SANTANA JOSÉ RANIERE FERREIRA DE
Published: November 2021

ABSTRACT Bromeliads are the target of predatory extractivism and consequently many species are included in the red list of threatened species, such as those belonging to the genus Neoregelia. Although Neoregelia mucugensis has not been evaluated for the degree of threat, its exploitation is exclusively extractive and its occurrence in Chapada Diamantina-BA is subject to the action of fires that affect the region annually. In this context, applying techniques aimed at protecting this genetic resource is fundamental for both the maintenance of its natural populations and the ex situ conservation of this genetic material. Plant tissue culture techniques have been successfully applied for the conservation of several bromeliad species. One of the methods used is slow growth, which consists in reducing plant metabolism and consequently decelerating its growth, which allows the maintenance of in vitro plant collections without the need for subculture. In this context, the objective of this study was to test the reduction of salts in the culture medium and the addition of osmoregulators on the induction of slow growth of N. mucugensis. Plants were subjected to treatments composed of different concentrations of MS medium and mannitol for a period of 12 months, when then analyses were conducted to evaluate growth, chlorophyll content and regeneration capacity of shoots in vitro. It was found that the treatment containing MS ½ and 7.8 g.L-1 of mannitol is indicated for in vitro conservation of N. mucugensis with maintenance of the regenerative capacity of its tissues.
AGRONOMIC CHARACTERISTICS AND GRAIN YIELD OF SORGHUM AND MAIZE HYBRIDS GROWN WITH DIFFERENT SOWING TIMES1
Authors: VIEIRA PAULO VINICIUS DEMENECK , FREITAS PAULO SÉRGIO LOURENÇO DE , SILVA ANDRÉ LUIZ BISCAIA RIBEIRO DA , SOUZA ANA CLAUDIA SOSSAI , VORONIAK JULIANA MARQUES
Published: November 2021

ABSTRACT Sorghum is a commonly grown plant in the Central-West region of Brazil as a second crop; however, it is grown almost exclusively as a second crop after maize in the state of Paraná (South region). The growth of sorghum crops is an option for areas or times in which the growth of maize crops can be risky. Thus, the objective of this work was to evaluate the agronomic characteristics of eight sorghum hybrids (ADV-123, ADV-114, 1G100, 50A10, 1G244, 50A40, 50A50, and 1G282) grown in three sowing times in two agricultural years: 2014 (February 20, March 02, and March 03) and 2015 (February 09, February 19, and March 01), and four maize hybrids in 2014 (DKB-330-Pro, P-3431-HX, Formula-TL, and AG-9010-Pro) and five maize hybrids in 2015 (DKB-330-Pro, P-3431-HX, Formula-TL, DKB-275-Pro, and DKB-290-Pro), in the same sowing times used for sorghum. A randomized complete block experimental design with a split-plot factorial arrangement was used, with the sowing times in the plots and the hybrids in the sub-plots. The variables evaluated were: number of days from sowing to flowering, leaf area index, 1,000-grain weight, grain yield, number of spikelets per panicle, for the sorghum crop; and number of rows per ear and number of grains per row, for the maize crop. The comparison between the two crops showed that the sorghum maintained higher production stability in the different sowing times.
EFFICIENCY OF ATTRACTORS AND TRAPS FOR CAPTURE OF SPOTTED-WING DROSOPHILA IN VINEYARDS1
Authors: BRILINGER DAHISE , ARIOLI CRISTIANO JOÃO , WERNER SIMONE SILMARA , ROSA JOATAN MACHADO DA , BOFF MARI INÊS CARISSIMI
Published: November 2021

ABSTRACT Pest monitoring is a practice that enables the estimation of populational density of insect-pests in crops. However, it requires the use of attractors and traps that present high efficiency. The objective of this work was to evaluate the efficiency of food attractors using different trap models for the capture of spotted-wing drosophila (Drosophila suzukii) insects, and the capture selectivity of these models in vineyards of Cabernet Sauvignon. The experiment was conducted in the 2018-2019 crop season, in São Joaquim, SC, Brazil. A randomized block design was used, in a 2 × 4 factorial arrangement consisted of two types of traps (PET bottle and plastic container), three attractors (SuzukiTrap®, Droskidrink, and Yeast), and distilled water as a control. The traps were distributed in a minimum distance of 15 m and fixed in the middle third of the plants. The collections and replacing of attractors were done with 21-day intervals. The data were analyzed through generalized linear models, using the Poisson distribution or Poisson with a dispersion parameter. All attractors tested captured adult D. suzukii insects. No significant differences were found between the trap types used. The findings of the present work showed that the trap plastic container with the Droskidrink attractor is the most suitable capture method to be used in monitoring programs for D. suzukii insects in commercial vineyards.
IDENTIFICATION OF Ricinus communis HYBRIDS FOR LOW PLANT HEIGHT1
Authors: MENEZES FREDSON DOS SANTOS , SILVA SIMONE ALVES , CAPINAN GEAN CARLO SOARES , BRASILEIRO HELISON SANTOS , SANTOS LAURENICE ARAÚJO DOS
Published: November 2021

ABSTRACT Castor bean (Ricinus communis L.) is a plant native to Africa that presents important socioeconomic value for many countries, and has been the subject of breeding programs. In this context, the objective of this work was to identify genotypes with potential for improvement, focused on lowering plant height, using 19 hybrids and eight parents of R. communis. The study was developed at the experimental area of the Federal University of Recôncavo da Bahia in Cruz das Almas, BA, Brazil. The experiment was conducted in 2017 using a randomized block design with three replications, consisting of eight parents and 19 hybrids resulting from hybridization of these parents, grown with spacing of 3 meters between rows and 1 meter between plants. The characters stem diameter (SD), primary raceme insertion height (PRI), number of stem internodes (NSI), mean stem internode length (SIL), plant height (PH), number of harvested racemes (NHR), primary raceme length (PRL), and effective raceme length (ERL) were evaluated by analyzing the genetic parameters of variances and correlation between them. Five (H17, H2, H11, H13, and H6) of the 19 hybrids evaluated have potential to decrease PH of castor bean plants, presenting heights below 1.07 m. Direct selection for plant height is the most indicated for this purpose due to the high heritability of the character. However, the characters SD, PRI, and SIL stood out by assisting in indirect selection to decrease plant height because they can be early measured and present high heritability and strong correlation with PH.
IDENTIFICATION OF SOURCES OF RESISTANCE TO Meloidogyne enterolobii IN ACEROLA1
Authors: SANTOS JOHN LENNON FERRREIRA DOS , SOUZA FLÁVIO DE FRANÇA , BOREL JERÔNIMO CONSTANTINO , CASTRO JOSÉ MAURO DA CUNHA E , CAPUCHO ALEXANDRE SANDRI
Published: November 2021

ABSTRACT In Brazil, acerola trees infested by Meloidogyne enterolobii present lower yield and fruit quality. The use of rootstocks resistant to this pathogen is one of the alternatives to overcome this problem. This study aimed to assess the reaction of 22 acerola accessions to M. enterolobii, aiming to identify at least one resistant rootstock. The experiment was carried out in a randomized block design with 10 replications and each plot consisting of 10 plants. Each plant was inoculated with 350 eggs and second-stage juveniles of M. enterolobii, with the gall index (GI) and reproduction factor (RF) being determined after 90 days. The variables were analyzed using the mixed model methodology (REML/BLUP). The accessions ACO-13, ACO-14, ACO-18, and BRS Apodi stood out with four to six plants showing resistance reaction to the root-knot nematode, but the assessment of accessions should be performed under a higher density inoculum and longer time.
CATIONIC NATURE OF WATER AND HYDROGEN PEROXIDE ON THE FORMATION OF PASSION FRUIT SEEDLINGS1
Authors: LIMA GEOVANI SOARES DE , SOUZA WESLLEY BRUNO BELO DE , PINHEIRO FRANCISCO WESLEY ALVES , SOARES LAURIANE ALMEIDA DOS ANJOS , GHEYI HANS RAJ
Published: November 2021

ABSTRACT This study was carried out with the objective of evaluating the water relations, photosynthetic pigments and growth of passion fruit cv. BRS Rubi do Cerrado, as a function of the cationic nature of irrigation water and exogenous application of hydrogen peroxide. The experiment was carried out under greenhouse conditions in Pombal – PB, Brazil. The experimental design was randomized blocks, in a 6 × 4 factorial scheme, corresponding to six cationic nature of water - CNW (S1 - Control; S2 - Na+; S3 - Ca2+; S4 - Na++Ca2+; S5 - Mg2+ and S6 - Na++Ca2++Mg2+) and four concentrations of hydrogen peroxide - H2O2 (0, 20, 40 and 60 μM), distributed in a randomized block design with four replicates. Plants in the control treatment (S1) were irrigated using water with electrical conductivity (ECw) of 0.3 dS m-1, while those of the other treatments (S2; S3; S4; S5 and S6) were subjected to ECw of 3.0 dS m-1, prepared with different cation(s). Application of 60 μM of H2O2 reduced the percentage of intercellular electrolyte leakage in plants irrigated with water of calcic composition. Salinity of water composed of sodium, sodium+calcium and sodium+calcium+magnesium, and H2O2 concentrations of 40 and 60 μM resulted in lower leaf water potential. The biomass accumulation of passion fruit was more sensitive to the variation of the electrical conductivity of the water. Regardless of the cationic nature, the use of water with electrical conductivity of 3.0 dS m-1 produced passion fruit seedlings with a Dickson quality index higher than 0.2, considered acceptable.
Mais a Temer do que Esperar: educação radical e classe trabalhadora
Authors: O’Neill Deirdre
Published: November 2021

RESUMO Este artigo se debruça sobre a questão de uma educação política radical a partir da perspectiva de uma classe trabalhadora global. Ele explora que forma tal educação tomaria e por que ela é fundamental para a criação de uma nova sociedade. Situando a discussão a partir de um arcabouço teórico marxista, argumenta-se que, embora seja possível a educação promover mudanças sociais, uma educação política radical só pode ocorrer fora das instituições formais de educação. O artigo explora as formas pelas quais o neoliberalismo, com o apoio da classe média, dificulta cada vez mais a educação pela busca da justiça e da libertação da classe trabalhadora. Não são oferecidas respostas definitivas, mas a possibilidade de um engajamento crítico com as questões abordadas.