bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of gibberellic acid-3 and 6-benzylaminopurine on dormancy and sprouting of potato (Solanum tuberosum L.) tubers cv. Diacol Capiro
Authors: Lizarazo-Peña Pedro Alfonso , Fornaguera-Espinoza Federico , Ñústez-López Carlos Eduardo , Cruz-Gutiérrez Nelson Alirio , Moreno-Fonseca Liz Patricia
Published: May 2021

The duration of the dormancy period in tubers is a determining factor in the planning of potato planting and production. The effect of two plant growth regulators on the dormancy period and sprouting of cv. Diacol Capiro tubers was evaluated in this study. The experiment was carried out under storage conditions (15°C and 75% RH) using a completely randomized block design with 3×3×3 factorial arrangement. The factors were: gibberellic acid-3 (GA3) and 6-benzylaminopurine (6BAP) (0, 25, and 50 mg L-1) and the immersion time (iT) (10, 60, and 120 min). The application of GA3 and iT had an effect on dormancy breakage; the treatments with 25 mg L-1 GA3 and 60 min of immersion were enough to reduce dormancy by 18 d (35%) compared to untreated tubers. The factor GA3 increased tuber weight loss (10.2%), generated sprouts with higher weight (25.6-28.4%), higher length growth rate (42.3%), and lower dry matter content (21.8-28.4%), and it increased secondary sprouting (36.2-57.9%) in comparison with untreated tubers. This way, despite the treatments with 25 mg L-1 GA3 reduced the dormancy period, this dose generated sprouts more susceptible to mechanical damage. The treatments with 6BAP did not significantly affect the evaluated variables.
Reactores Bioquímicos Pasivos: Una alternativa biotecnológica para la remediación de drenajes ácidos de mina
Authors: Vasquez Olga Yaneth , Escobar Maria Camila
Published: May 2021

El Drenaje ácido de mina (DAM) es actualmente el principal contaminante de las regiones mineras. Los reactores bioquímicos pasivos son una tecnología sostenible fácil de instalar que utiliza desechos agroindustriales de la región y puede operar en áreas remotas con poco mantenimiento. Además, son una tecnología limpia que involucra bioprocesos, reacciones químicas y precipitación de metales minimizando el impacto de los vertimientos ácidos sobre suelos y cuerpos de aguas. Los reactores bioquímicos pasivos son columnas empacadas con una “mezcla reactiva” conformada por materiales orgánicos, inorgánicos y un inoculo microbiano. En esta mezcla se remedia el DAM por medio de procesos fisicoquímicos como la adsorción, precipitación, coprecipitación de los metales y de la reducción del sulfato a sulfuro, mientras se incrementa el pH y la alcalinidad. Con el fin de brindar información reciente, así como las necesidades de investigación en el tema este documento presenta una revisión de literatura sobre la generación química y biológica de los DAM, así como su remedición utilizando reactores bioquímicos pasivos. El conocimiento de los conceptos básicos de estos procesos es extremadamente útil para evaluar las posibles aplicaciones, beneficios y limitaciones de estos sistemas de tratamiento utilizados por la biotecnología durante la biorremediación de efluentes mineros.
MULTI-MODE IDENTIFICATION OF OBTAINING THE ADEQUATE MODEL OF TURBOJET ENGINE TJ-100A-Z FOR DIAGNOSTICS BY THERMALGASDYNAMIC PARAMETERS
Authors:   Kazan National Research Technical University named after A.N. Tupolev – KAI, Ahmed Heersh , Osipov Boris ,   Kazan National Research Technical University named after A.N. Tupolev – KAI
Published: May 2021

When monitoring and diagnosing the state of gas turbine engines by thermodynamic parameters, adequate mathematical models of these engines are used. This name means diagnostic methods based on special processing and analysis of the values of thermogasdynamic and other parameters measured on a working turbojet engine [1] using its mathematical model. The most important in the system of technical diagnostics is the mathematical model of the engine. Its creation is a problem since, as a rule, the specifications of engine components are not given in the technical documentation. In this regard, obtaining complete mathematical models of engines for diagnostic purposes is an urgent task. There are various approaches to obtaining the characteristics of nodes and one of them is the use of generalized characteristics, for example, developed at the N.E. Zhukovsky Air Force Engineering Academy at the Department 201 "Theory of Air-Jet Engines" under the direction of Professor Nechayev Yu.N. Experience using such characteristics has shown that such characteristics can be used, but in a fairly narrow range of throttle modes. As a rule, this range was limited to no more than 40 % of the calculated (nominal) mode, which significantly limits the capabilities of the mathematical model of turbojet engines when implementing diagnostics using thermodynamic and dynamic parameters. This article proposes an algorithm developed by the authors a lot of mode identification, implemented as a computer program. As an object of study used turbojet engine TJ-100A-Z manufactured in the Czech Republic. For this, the turbojet engine obtained the characteristics of the main components (compressor, combustion chamber, turbine and nozzle) using the throttle characteristics given in the technical conditions. The calculation results are presented in the form of tables and graphs with error analysis in the calculation before and after identification. The comparison of the errors of the parameters of the throttle characteristics with the errors of the sensors for measuring these parameters is given.
NUMERICAL MODELING AND EXPERIMENTAL RESEARCH OF A LIQUID-LIQUID EJECTORS WITH A CURVED INITIAL MIXING CHAMBER AREA AND WITH DIRECT MIXING CAMERA
Authors:   Kazan National Research Technical University named after A.N. Tupolev – KAI, Kartas Salar , Panchenko Vladimir ,   Kazan National Research Technical University named after A.N. Tupolev – KAI, Aleksandrov Yury ,   Kazan National Research Technical University named after A.N. Tupolev – KAI
Published: May 2021

The article presents the results of numerical simulations and experimental studies of a liquid-liquid ejector with a curved initial portion of the mixing chamber. The experiment was conducted on liquid-liquid ejectors, models of which are made on a 3D printer, by the method of layer-by-layer deposition. The influence of possible manufacturing errors of the ejector on its characteristics is estimated. The issues of the use of liquid ejectors designed to work in the field of various predetermined ejection coefficients are considered. The theoretical ejection coefficient and the reasons for reducing the ejection coefficient in real ejectors are determined. The obtained dependences make it possible to determine the optimal design parameters of a liquid ejector and thereby increase its ejection coefficient. The relative pressure drop is shown at a low coefficient and at a high ejection coefficient. The calculated and experimental results of determining the ejection coefficient for liquid ejectors, which are widely used in various fields of technology, are presented. The results of numerical simulation of internal processes in the ANSYS-Fluent hydro-gasdynamic application package flowing in a single-phase liquidliquid ejector based on the study of a small-sized model are presented. As a result of the simulation, a good agreement was obtained between the calculation results of the model corresponding to the real prototype and the experimental data and comparison with the results of other authors. Several conclusions can be drawn from the results of the study. For example, a region of values of the ejection coefficient was found in which the relative pressure drop created by the ejector increases with an increase in the ejection coefficient.
DEVELOPMENT OF THE NUMERICAL METHODOLOGY FOR THE ESTIMATION OF RESONANT PROCESSES AT GASTURBINE ENGINE FLOW DUCT
Authors:   Perm State University, Shuvaev Nikolay , Siner Aleksandr ,   Perm State University, Kolegov Ruslan ,   Perm State University
Published: May 2021

Ensuring safety of flights is the most important task that is being solved in the process of designing an aircraft engine and aircraft. The most complex are the physical processes occurring inside the aircraft engine, especially in its gas generator: combustion chamber, high-pressure compressor and high-pressure turbine. The unsteady flow of gas in the flow duct of the aircraft engine is very complex, it is difficult to model, because the flow is characterized by a wide range of time and space scales. Unsteady flow in a high-pressure compressor can cause surge and breakdown of the compressor and the entire engine as a whole. Along with the detachment flows causing the surge, in the flow duct there can be resonant phenomena associated with the propagation of powerful sound waves along the flow duct of the engine, which, when a direct and reflected wave is imposed, create a very powerful standing wave that affects the structure. With a certain combination of conditions, the coincidence of the natural frequencies of the oscillations of the air volume and the solid body, such resonant processes in the flow duct of the gas turbine engine can lead to serious breakdowns, such as breakage of rotor blades and guide vanes, destruction of the aeroengine framework and other. The main difficulty is that it is problematic to identify such processes at the design and debugging stage, since there are no suitable mathematical models, and for experimental verification it is required to withstand the specific operating conditions of the node that are not known in advance. This work is devoted to the creation of a calculation technique that will allow in the future to diagnose resonance phenomena at the design stage and thereby significantly reduce the costs for the design, testing and manufacture of an aircraft engine. The proposed technique is based on the nonstationary Navier-Stokes equations for a compressible gas.
NUMERICAL SIMULATION OF THE DYNAMICS OF A FLEXIBLE ROTOR WITH TWO BALL AUTO-BALANCERS
Authors:   Perm National Research Polytechnic University, Zaytsev Nikolay , Zaytsev Denis ,   Perm National Research Polytechnic University, Makarov Andrey ,   PJSC “Research and Production Association “Iskra”, Mineev Dmitriy ,   Perm National Research Polytechnic University
Published: May 2021

Ball auto-balancing devices can to compensate changes of unbalance "on the move" only for rotors operating at supercritical speeds. For automatic balancing of such rotors, classified as flexible rotors, several auto-balancers located in different cross sections of the shaft are necessary. This makes it necessary to account bending fluctuations on studies of dynamics of the rotor with auto-balancers, that is especially important in the design of the real rotors. In view of the complexity of experimental studies of such rotors in the article the method of direct numerical simulation of the dynamics of the flexible rotor system – supports – auto-balances is considered. The methodological basis of this method is the use of a discrete multi-mass rotor model, which is equivalent in dynamic characteristics to a real rotor, and also the equations of dynamics of the system discrete rotor – supports – auto-balancers, obtained in the direct form of recording. For definition of discrete masses and a matrix of coefficients of influence of stiffness of rotor cross-sections it is supposed to use calculations for finite-element model of a real rotor by existing software complexes of the engineering analysis. The mathematical model of the system dynamics obtained by the Lagrange method takes into account the non-stationarity of the rotor rotation speed, the influence of gravity and the rolling friction of the balls in the auto-balancer cages. Verification of the mathematical model was performed by reproducing the published data using a computational model for a two-support single-disk three-mass rotor with a two-ball auto-balancer. For a four-mass rotor with two two-ball auto-balancers, the results of numerical simulation of dynamics for the modes of acceleration, steady-state rotation and deceleration are presented. It is shown that for the system under consideration, only partial auto-balancing takes place in the steady rotation mode, including after a stepwise increase of the imbalance.
DYNAMIC CHARACTERISTICS ANALYSIS OF BLADED DISK TURBOMACHINES BASED ON INTENTIONAL MISTUNING
Authors:   Irkutsk State Agrarian University named after A.A. Ezhevsky, Repetckii Oleg , Nguyen Van Vinh ,   Irkutsk State Agrarian University named after A.A. Ezhevsky
Published: May 2021

To increase technical level of energy turbomachine in modern turbomachinery, high reliability and durability of structures are required in the design, manufacture and operation of turbomachine. Any change geometry, mass, material properties of the bladed disk of turbomachine in the design is called mistuning parameters. With a small value of mistuning blades can significantly increase amplitude, displacement or stresses of the blades structures. So, analysis influence of the effect mistuning parameters on the dynamic characteristics in the field of turbomachine is an important and urgent task. This article analyzes the effect intentional mistuning of the axial bladed disk turbomachine in order to reduce forced response due to low-order engine excitation. The maximum value forced response of rotor blades turbomachine with mistuning parameters is usually much more than that of the tuned rotors. An increase level mistuning of this critical value actually leads to a decrease magnifications of the forced response. Thus, the actual work has been introducing some degree of intentional mistuning in the design to achieve these purposes. In this paper, we study the effectiveness of intentional mistuning at the design stage bladed disk turbomachine, which is introduced into the rotor design by changing the nominal mass of the blades in harmonic Формаls.
Access to Weapons: A Comparative Analysis Between Poland and the United States
Authors: Phillips Brian , Frańczuk Magdalena
Published: May 2021

Objectives: In this article, we attempt to answer the following question: is there a need to liberalise policies and laws to allow the Polish citizens to have a greater access to weapons? We compare the Polish and the American regulations in this area. In our attempts to understand possible ramifications for Poland’s greater access to weapons, we review the American experience with firearms with emphasis on ownership history, the current debates, a comparative analysis of other dangers, and policy implications. In the conclusion, we employ the culture theory of risk to highlight the debates. The article draws attention to aspects meaningful in the context of shaping the policy of access to weapons and the direction of possible changes in legal regulations in this area.
Research Design & Methods: The methods used in this article revolve round literature reviews of the debates, statistical data, a survey analysis, and an analysis of legal regulations.
Findings: Restrictions on the access to weapons in Poland may not be desirable. They can limit civic rights and prevent a potential net gain of financial revenue. On the other hand, too liberal access to weapons can be potentially dangerous for the safety and well-being of the citizens.
Implications / Recommendations: We believe that more research in this area needs to be conducted with a greater focus on the culture theory of risk as well as other paradigms which employ the latest statistics for a broader social-research agenda. We observe a lack of research and literature in this area.
Contribution / Value Added: Given the current social and economic climate in Poland and in the United States, we find this research study to be both timely and important. Specifically, on December 14, 2019, new arms regulations entered into force in Poland. On the other hand, President Joe Biden has recently positioned himself on taking a more rigorous approach to firearm violence.
Article classification: research article
JEL classification: K14, K19
Revolution 4.0 as a Factor of Change in the Labour Market
Authors: Giza Wojciech , Sztokfisz Barbara
Published: May 2021

Objectives: The aim of the deliberations is to show how the exogenous factors, in this case the subsequent Industrial Revolutions, affected the structural changes of the labour market and how they were perceived by the economists.
Research Design & Methods: The research area is limited to the theory that explains the functions of the labour market in the historical perspective. The study is a theoretical study that combines the elements of analysis in the field of economic history and the development of economic thought. The justification of the presented theses was made using the induction method and the comparative method, both of which enable the presentation of the labour market evolution process in a relatively long-time horizon.
Findings: The structure of the study reflects the changes that have taken place in the economic theory under the influence of the Industrial Revolutions. The last of them, the Revolution 4.0, is a reference point to form the key questions regarding the automation and redistribution of income that the contemporary labour market researchers are concerned with.
Implications / Recommendations: In the theoretical dimension, the attention was drawn to the usefulness of the comparative analysis method for understanding the profound changes in the labour market. The practical aspect of the research is to identify the potential threats that arose as a consequence of the Revolution 4.0. Understanding them makes it possible to take action in the field of social, economic, and educational policies that aim at reducing social tensions resulting from dynamic changes taking place in the labour market.
Contribution / Value Added: The technological progress is most often treated as a key factor that affects the supply side of the economy. It enables an increase of the productive potential of highly developed societies. The presented considerations reveal the analogies that arise in connection with the functioning of the labour market in the context of subsequent technological revolutions. Particular attention was paid to the influence of technological progress on the demand side of the economy and the consequences related to the distribution of income. The article is an attempt to supplement the reflection on the impact of the latest advancements in information technology with the context of historical changes that have taken place in the labour market.
Article classification: theoretical article, conceptual article
JEL classification: O31, O33, B30, J31
The Opportunities and Threats Resulting from Robotic Process Automation in Public Service Development
Authors: Baran Grzegorz , Berkowicz Aleksandra , Marzec Małgorzata , Sasak Janusz , Szczudlińska-Kanoś Agnieszka
Published: May 2021

Objectives: This study aims to identify the opportunities and threats of automation and robotisation process automation in the development of public services.
Research Design & Methods: In this study, the method of deduction was used as well as auxiliary methods and techniques such as logical analysis, analysis and study of literature, and classification and scientific description. The reasoning process was based on knowledge of management sciences and the existing findings with regard to digital transformation, in particular the robotic process automation of the public sector and services.
Findings: The study revealed opportunities and threats related to the automation and robotisation of public services concerning three entities/groups: citizens, administration employees, and public organisations.
Implications: The issues presented in the article might constitute the basis for practitioners, mainly public authorities and all other persons responsible for creating and implementing automated and robotic public services. Applications can be of particular interest to local government officials and management staff of various public institutions. Therefore, the robotisation and automation of services will gain in importance in the coming years, and many entities will be involved in their introduction and operation. This paper can also be useful for the economic and non-governmental sectors, whose recipients will be more aware of the opportunities and threats of service automation and robotisation.
Contribution / Value Added: As a result of the analysis, the synthesis of the theoretical findings on the processes of automation and the robotisation of public services as well as certain consequences of these processes for further development of these public services were identified. They were then classified as opportunities or threats to the further automation and robotisation of public services, which may serve as a basis for the establishment of subsequent empirical studies.
Article classification: theoretical/conceptual paper
JEL classification: M0, O3, H4
Mulher, esposa e mãe na ciência e tecnologia
Authors: Loch Rayane Monique Bernardes , Torres Kelly Beatriz Vieira , Costa Carolina Reciate
Published: May 2021

Resumo: Neste artigo se discute as desigualdades de gênero nos cursos de engenharia de um campus de uma universidade pública, na perspectiva de discentes de ambos os sexos e pesquisadoras/docentes do sexo feminino. Foram analisados o número de discentes mulheres ingressos e egressos por curso, o tempo de integralização na graduação, os influenciadores para a escolha da carreira, a discriminação de gênero na academia, o número de mulheres nos departamentos, a conciliação entre família, maternidade e carreira, bem como os obstáculos enfrentados no mercado de trabalho pelo público feminino.
Práticas de percepção da fertilidade entre mulheres jovens
Authors: Klöppel Bruna , Rohden Fabíola
Published: May 2021

Resumo: Neste artigo temos como objetivo caracterizar uma configuração em torno da percepção da fertilidade e descrever sua articulação ao aparato de gênero e à biomedicalização. Com uma abordagem etnográfica, tomamos como ponto de partida um grupo no Facebook sobre percepção da fertilidade e realizamos entrevistas semiestruturadas com seis de suas porta-vozes. Além disso, analisamos livros e sítios que nos foram indicados nessas entrevistas e fizemos observação participante em um curso presencial ministrado por uma das interlocutoras. Concluímos que concomitante a projetos coletivos de empoderamento de corpos e subjetividades com ciclos menstruais, há responsabilização individual pela saúde e pelo autoaprimoramento. Ademais, reforça-se a substancialização do binarismo sexual com a produção de uma “natureza hormonal”, ainda que seja mais associada à saúde que ao gênero.
Maternidades em contextos educativos do PIM/RS
Authors: Klein Carin
Published: May 2021

Resumo: O artigo é parte de uma pesquisa inspirada nos Estudos de Gênero, na qual problematizo um suposto caráter inerente às maternidades que, na “natureza” de todas as mulheres, coloca sentimentos, habilidades e comportamentos relacionados ao cuidado, à educação e à saúde das crianças, o que traz impactos às relações de gênero. O material empírico foi produzido por meio do cruzamento de informações de documentos oficiais e atividades que integram o Primeira Infância Melhor (PIM/RS). O artigo tensiona a produção das maternidades, no âmbito de uma política pública, compreendendo-a como uma instância educativa que propõe formas de investir na maternidade e de exercê-la. A forma de operacionalização da política permitiu apreender limitações muito concretas dos ensinamentos propostos pelo PIM, indicando a necessidade de refletir sobre as maternidades.
A mulher na sociedade de classes: contribuições para uma historiografia feminista
Authors: Méndez Natalia Pietra
Published: May 2021

Resumo: Ao completar cinquenta anos do livro A mulher na sociedade de classes: mito e realidade, este artigo propõe revisitar a obra da socióloga Heleieth Saffioti (1934-2010). O objetivo é realizar uma análise historiográfica questionando qual é a interpretação da história do Brasil elaborada pela autora e qual a sua contribuição para uma perspectiva teórica feminista. A autora dedicou o segundo capítulo a discutir “A evolução da condição da mulher no Brasil”. Saffioti recorreu a debates com alguns dos principais intérpretes da história do país - Antonio Candido, Caio Prado Jr., Gilberto Freyre - e fez uso de diversas fontes documentais - relatos de viajantes, dados estatísticos, cartas - para corroborar seus argumentos sobre o caráter patrimonial e patriarcal da sociedade brasileira. Nesse sentido, o artigo procura examinar o livro como uma obra que contribuiu para a história das mulheres no Brasil.
A mulher na sociedade de classes: um clássico dos estudos de gênero
Authors: Sorj Bila , Araujo Anna Bárbara
Published: May 2021

Resumo: Este artigo discute a recepção da obra de Heleieth Saffioti, com ênfase no livro A mulher na sociedade de classes: mito e realidade, nas Ciências Sociais e Humanas brasileiras ao longo das últimas cinco décadas. O objetivo do artigo é mostrar como a circulação dos escritos de Saffioti se manteve irregular e como dialoga com a área de estudos de gênero e feminista no país. Para tal, é realizada uma análise bibliométrica das citações à autora, bem como são investigadas as dinâmicas de formação e consolidação do campo dos estudos de gênero no Brasil.
Assembly line for the production of light gauge steel frame modular housing
Authors: Vivan André Luiz , Paliari José Carlos
Published: May 2021

Abstract: For manufactured homes, the Light Gauge Steel Frame system does not have an in-depth study on the relationship of its assembly techniques and the behavior of the production system based on assembly lines. Thus, this article presents the development of a flow shop production system using assembly lines for the production of Light Gauge Steel Frame modular houses. The main result was that the system was able to deliver a house in a little more than eight working hours, using four-hour cycles. For this, the article made use of experimental research procedure with the use of computational simulation. The abstracted model of the designed system was simulated, and its behavior analyzed concerning the hypothesis of improvement proposed in four different scenarios. The results can be considered relevant because it fills gaps in the body of knowledge in question with the use of the Light Gauge Steel Frame as a technology for the production of manufactured houses from assembly lines, also providing parameters of performance and design for the implementation of the proposed solution in the real estate market.
The evolution of studies on information technology and organizational agility: a bibliometric analysis
Authors: Tomomitsu Henrique Takashi Adati , Moraes Renato de Oliveira
Published: May 2021

Abstract: Studies on information technology and organizational agility has shown significant growth since the beginning of 2014, which may be an indicator that this theme is beginning to mature in the concerned literature, and increasingly has become the subject of researchers. In view of the presented scenario, the objective of this study is to introduce a synthesis of the literature panorama of the relation between the focused two constructs in the last years. The author (s) chose to employ a bibliometric analysis to understand the evolution of studies on that relation. We concluded that in the United States there is a great concentration of research on this subject, and the most recent publications, in general, occurred in relevant management and information management system journals. The identified studies mainly concentrate on the causal relationship between information technology (IT) and organizational agility from three perspectives: (1) the direct effect of IT capabilities on agility, (2) the moderating effect of IT capabilities on the relationship between other organizational capabilities and organizational agility, and (3) the indirect effect of IT on organizational agility mediated by other organizational capabilities. In addition, it was possible to identify organizational agility connected with three aspects: sensitivity, decision and responsiveness. Another contribution of the study is the construction of a framework based on the main study samples and the most recurrent keywords. It is possible to detect the three levels of analysis in the relation between the two previously mentioned constructs, besides bringing out the definitions used for each construct. An opportunity for future studies is to evaluate the taxonomy identified for organizational agility.
Maturity and level of knowledge management in the company: an application of Nonaka and Takeuchi model and Fuzzy Logic
Authors: Arantes Lídia Silveira , Martinelli Junior Orlando , Viegas Thales de Oliveira Costa , Rohenkoh Júlio Eduardo
Published: May 2021

Abstract: This paper aims to understand how the interconnection between the tacit and explicit dimensions of knowledge impacts knowledge management and its degree of maturity. Knowledge management maturity is understood as the ability firms are expected to have in order to exercise (to some degree) the skills required to manage knowledge internally. Nonaka and Takeuchi (N&T) model of organizational knowledge management was applied to a sample of companies (segmented by size) from the states of São Paulo, Minas Gerais, and Rio de Janeiro, by using the logic of fuzzy sets. The results have shown that small and medium companies have lower levels of knowledge management maturity when compared to large companies. However, in large companies, knowledge management is at medium levels. In this context, this paper suggests, as management guidelines, that companies measure their professionals' perception regarding the company level of knowledge management, pursuing to identify which of their components should be developed.
Bedside nurses’ care model: challenges and perspectives for an innovative practice
Authors: Rezende Lilian Cristina , Vilela Gláucia de Souza , Caram Carolina da Silva , Caçador Beatriz Santana , Brito Maria José Menezes
Published: May 2021

ABSTRACT Objective: To understand the practice of nurses in the context of the care model at the bedside of the patient in an Intensive Care Unit, in the light of the ethics of virtue. Method: Qualitative research, carried out in an Intensive Care Unit of a University Hospital MG/Brazil. Data were collected in February 2016 through a semi-structured interview applied to the 12 nurses who worked at the unit. The data were submitted to Thematic Content Analysis. Results: The “bedside” care model encourages innovative practice, (re)directing nurses in the search for their telos, patient care, overcoming the fragmentation of nursing care and reconfiguring professional identity. However, the organization of the model in the scenario raised challenges related to the recognition of nurses by the multi-professional team, generating identity ruptures. Conclusion: The adopted bedside model interferes in the nurses’ relationship with care, bringing together professional and patient, enhancing innovative and excellent practice.
Transient Bodies in Hard Topographies: a guide for life together in Raimund Hoghe's Sans-titre
Authors: Vicente Gustavo
Published: May 2021

ABSTRACT This paper argues that Sans-titre, by the choreographer Raimund Hoghe (2009), proposes that it is through a movement of release from the static forces of cultural representation that the subject may become closer to others as humans. In other words, the subject may thus build a relationship based on ethics. The analysis draws on a subjective interpretation that unfolds according to the narrative sequence of the performance, therefore trying to free itself from the neutral (and potentially simplistic) look commonly associated with traditional academic models, while at the same time raising new critical possibilities around reception aesthetics.
A pandemia e o ordinário: apontamentos sobre a afinidade entre experiência pandêmica e registros cotidianos
Authors: Gajanigo Paulo , Souza Rogério
Published: May 2021

Resumo Este artigo tem como objetivo discutir a existência de uma afinidade entre a estética de relatos cotidianos, testemunhos e diários com a experiência específica da pandemia do Covid-19. Partimos da ideia de que uma característica bastante compartilhada na experiência da pandemia tem sido o foco nos traços desse momento histórico na vida cotidiana, resultando num impulso para a presentificação. Nossa hipótese é que na experiência da fase da pandemia marcada pelo distanciamento e isolamento social se formou uma estrutura de sentimento que é maturada na produção e fruição de registros ordinários, uma valorização de formas como diários e testemunhos de pessoas comuns. Fazendo uso da experiência de um grupo virtual de compartilhamento de relatos e do mapeamento de diversas iniciativas de coletas de registros, o artigo analisa como certas experiências da pandemia do Covid-19 se relacionam com as noções de trauma, luto e extraordinário.
Políticas educacionais com perspectiva de gênero nos governos de Michelle Bachelet e Dilma Rousseff
Authors: Furlin Neiva
Published: May 2021

Resumo Nas últimas décadas, as desigualdades de gênero foram reconhecidas como um problema social a ser enfrentado pelos governos nacionais, por meio de políticas públicas com transversalidade de gênero, em todos os setores estatais. O presente artigo tem por objetivo analisar as políticas educacionais com perspectiva de gênero promovidas pelos Estados brasileiro e chileno, no governo de Dilma Rousseff e Michelle Bachelet, identificando avanços, especificidades, desafios e disputas políticas protagonizadas com a emergência de atores reacionários e conservadores. Trata-se de uma pesquisa comparativa de caráter qualitativo, cujos dados são levantados por meio de pesquisa documental e entrevistas com ex-ministras e integrantes de ONGs feministas. Para a análise dos dados, elegemos os referenciais teóricos dos estudos feministas, de gênero e de políticas públicas. Resultados apontam especificidades tanto das disputas na agenda pública quanto das políticas implementadas que estão diretamente vinculadas aos contextos cultural, político e social desses países.
Ciência das políticas públicas: reflexões sobre sua diversidade analítica
Authors: Mota Luis F.
Published: May 2021

Resumo O objetivo deste ensaio é apresentar uma revisão sobre as principais abordagens analíticas que têm caracterizado a ciência das políticas públicas, bem como apresentar uma reflexão crítica sobre a diversidade analítica da disciplina em termos teóricos, epistemológicos, metodológicos e até de influências disciplinares. De igual modo, procede-se a uma reflexão sobre os principais debates presentes e futuros da disciplina. Desta análise ressalta a enorme diversidade que caracteriza esta disciplina, que tem, inclusivamente, dado origem a diferentes comunidades de analistas, com radicais disciplinares e objetivos de análise bem diversos. De igual modo, torna-se evidente que as diferentes abordagens seguem as tendências gerais das ciências sociais com debates entre positivistas e pós-positivistas, bem como entre teóricos defensores da primazia da agência ou da estrutura na explicação da mudança e continuidade das políticas públicas.
Welfare State and Epistemic Communities of Fiscal Austerity in Brazil: from Lula da Silva to Jair Bolsonaro (2003-2020)
Authors: Pinho Carlos Eduardo Santos
Published: May 2021

Abstract This article is based on a theoretical-conceptual framework and empirically grounded research to analyze the construction of discourse and institutional insertion of ideas from epistemic communities of fiscal austerity in Brazil, given the recent upsurge in liberal-orthodox policies and their repercussions for the welfare state. The study explores who these actors and institutions are, how they act, how they are organized, and who trains or finances them. The main objective is to unveil how the ideas in defense of fiscal constriction were formulated and disseminated, starting after the first term (2003-2006) of President Lula da Siva’s government (2003-2010), when developmentalist policies replaced the neoliberal convention. The ideas of fiscal constriction were intensified during the government of President Dilma Rousseff (2011-2016), and gained characteristics of a unified proposal, materialized in the austerity program Uma Ponte para o Futuro (2015) (a bridge to the future). After President Rousseff’s impeachment in 2016, policy-makers in the government President Michel Temer and his successor Jair Bolsonaro rapidly put forward the austerity program. The epistemic communities of fiscal austerity argue that the public policies outlined in the 1988 Brazilian Constitution are the main cause of the increase in spending on welfare, the accelerated growth of public debt, and the probable insolvency of the country.
“Nos e fidju la di gueto, nos e fidju di imigranti, fidju di Kabu Verdi”: estética, antirracismo e engajamentos no rap crioulo em Portugal
Authors: Raposo Otávio , Varela Pedro , Simões José Alberto , Campos Ricardo
Published: May 2021

Resumo Ao longo de décadas, o rap tem sido central na construção de um discurso antirracista em Portugal. Com músicas a denunciar a violência policial, a exclusão social, o legado colonial e o racismo, os rappers negros das periferias de Lisboa desempenham um papel de vanguarda na luta contra a opressão racial, particularmente aqueles que cantam em crioulo cabo-verdiano. Apoiados por dispositivos e redes digitais, estes jovens constroem circuitos de sociabilidade e de produção musical impulsionadores de uma estética insurgente capaz de desafiar o estatuto de subalternidade que lhes é imposto. O presente trabalho debruça-se sobre a importância do rap na exposição do problema do racismo na sociedade portuguesa. Recorrendo a diferentes pesquisas de natureza qualitativa, analisamos os estilos de vida, as letras de música, o acesso às redes digitais e os engajamentos dos rappers no movimento antirracista.
Bait efficiency to monitor mandi (Pimelodus maculatus) in the tailrace of hydropower dams, Southeast Brazil
Authors: Peressin Alexandre , Souza Rafael Couto Rosa , Godinho Alexandre Lima
Published: May 2021

Abstract: Aim This study compared the efficiency of two baits (earthworm and cow heart) for monitoring the abundance of mandi catfish (Pimelodus maculatus) in the tailrace of hydropower dams, one of the commonly killed fish in turbine procedures. Methods Sampling occurred every two months from February 2014 to December 2015 at the Camargos and Itutinga hydropower dams, located in the upper Paraná River basin, using hooks baited with earthworm and cow heart. We used generalized linear models to test the influence of dam, bait type, dam outflow discharge, water temperature, transparency, and dissolved oxygen on mandi abundance, calculated as catch per unit effort. Results Most mandi (73%) were caught using earthworms but catch per unit effort of mandi for both baits showed the same pattern of seasonal variation at each dam. At both dams, individuals of mandi sampled using earthworms were smaller than those sampled using cow heart, and water temperature was the only environmental variable significantly associated with the catch per unit effort of mandi. Conclusions Both baits are efficient to monitor seasonal variations in mandi abundance, which is influenced by water temperature. Monitoring the abundance of mandi in the tailrace can help minimizing fish mortality by scheduling risky turbine procedures for periods of lower mandi abundance.
Optimized and validated protocol to the detection of the invasive bivalve Limnoperna fortunei from eDNA plankton samples
Authors: Ribolli Josiane , Cassol Sophia , Silva Samara Hermes , Zaniboni Filho Evoy , Zacchi Flávia Lucena , Mattos Jacó Joaquim , Cardoso Grasiela Fagundes Minatto , Nuñer Alex Pires de Oliveira
Published: May 2021

Abstract: We optimized a methodology for plankton environmental DNA detection of the invasive golden mussel and validated it in samples from a Southern Brazil reservoir. Limnoperna fortunei is a successful invasive alien species that causes significant impacts on freshwater ecosystems. We adjusted and validated the methodology to detect L. fortunei in plankton samples, with a SYBR Green assay. Based on the standard curve analysis, the observed theoretical minimal qPCR detection level was 0.0005625 ng.µL-1 (R2 = 0.99) at a PCR quantification cycle of 14.09–29.56. We also presented a practical guide to be used in monitoring and detection of L. fortunei. The optimized protocol was efficient in detecting L. fortunei and can be used to monitor already infested environments or invasions in new environments.
Evaluating the periphyton as a bioreactor for removal of nutrients in a shallow hypereutrophic reservoir
Authors: Mendes-Santos Suele Aparecida , Ferragut Carla
Published: May 2021

Abstract: Aim We evaluated the periphyton on artificial substrate in the treated sewage effluent, effluent patch, inside and after the macrophyte stand in a shallow hypereutrophic reservoir. Specifically, we investigated the relationship between N and P contents and algal biomass in the periphyton with N and P availability, focusing on nutrient retention. Methods Periphyton sampling was performed at the effluent inlet, effluent path, inside, and two sites after macrophyte stand. Periphyton sampling was performed after 30 days of colonization. Abiotic variables were determined in the sewage effluent and in the reservoir water. Results Biomass and N and P contents in the periphyton were significantly different among sampling sites. The highest nutrient concentrations were found in the sampling sites with effluent. The highest periphyton chlorophyll-a were found inside and after the macrophyte stand, while N and P contents were the highest in the effluent inlet and effluent. Conclusions In conclusion, N and P contents in the periphyton were associated with N and P availability, evidencing the ability of nutrient retention of the community. Our findings suggest that periphyton on artificial substrate can as a potential tool for removing N and P from the effluent from the sewage treatment system, contributing to minimizing the nutrient load discharged in a shallow reservoir.
Sediment phosphorus fractionation and flux in a tropical shallow lake
Authors: Papera Jéssica , Araújo Fabiana , Becker Vanessa
Published: May 2021

Abstract: Aim The aim of the present study is to evaluate the potential phosphorus (P) release from the sediment to the water column of a tropical shallow lake in the northeast of Brazil, based on the sediment P fractions and on the flux of P between water and sediment. Methods We used a sequential extraction method to analyse the different P fractions of the sediment of Lake Extremoz. We also carried out a 40-day microcosm experiment to analyse the flux of P between water and sediment. We did so by flooding 200g of sediment from the lake with 800 mL of 1.2 µm filtered lake water in 1 L beakers. Every 5 days we analysed: soluble reactive phosphorus (SRP), total phosphorus (TP), organic phosphorus (Org-P), dissolved oxygen (DO), temperature, and pH of the water. Results The largest fraction of P in the sediment of Lake Extremoz is Refractory-P, which is non-mobile. The main mobile fraction of this lake’s sediment is composed of P bound to Fe and Mn oxides (BD-P) which is redox sensitive. During the P flux experiment, the water was always oxic and with nearly neutral pH, however the temperature increased by almost 4 °C due to the increase of the temperature of the air. SRP, TP and Org-P concentrations in the water had a general decrease in the first 20 days. But, on the second half of the experiment, those concentrations increased and the fluxes of P from sediment to water, mainly Org-P, were positive. Even with this increase in concentrations, indicating a period of P release, overall fluxes were negative. Conclusions The main mobile fraction of the sediment is redox sensitive, therefore it has the potential to be released in case of oxygen depletion. Under current conditions, most of the P released by the sediment is in organic forms, indicating that, in the presence of oxygen, the balance of P between water and sediment is controlled by the effects of organisms on P as well as temperature.
Areas of Legal Impact in the Field of Genomic Research: Russian and International Experience
Authors:   Ural State Law University, Berg L. N. , Golubtsov V. G. ,   Perm State University
Published: May 2021

Introduction: along with major civilizational revolutions, the past 50 years have seen advances of the biotechnological, or genetic, revolution. It has resulted in the development of industries such as transplantology, pro-creative technologies, gerontology, etc., which led to a sharp change in the anthropological situation and transformation of human corporeality. Due to the biotechnological revolution, people learned how to diagnose and treat hereditary diseases, life expectancy increased, and birth control became possible. This revolution gave rise to a new conceptual language, in the structure of which the concept of ‘genomic information’ occupies the most important place. Purpose: the article is devoted to the analysis and substantiation of the areas of legal impact on the results of genomic research, which is caused by technological modernization and new information processes occurring in chemical, biological, and medical science and practice. To achieve this goal, the authors study the problems arising from the circulation of genomic information and analyze the directions of legal impact on new objects appearing as a result of advances in genomic research. Methods: the methodological framework of the research is based on universal (philosophical), general scientific, specific (including special legal) scientific methods: dialectical, logical, concrete historical, sociological, comparative legal and formal legal. The specificity of the research subject determined the use of the systems approach. Results: we can distinguish three aspects in the analysis of the concept of ‘genome’: functional, informational, axiological. The genome is defined in different ways depending on which of the aspects is chosen; accordingly, different legal means and elements of legal impact are used within each of the aspects. Legal relations being the focus of the legislators' attention have a significant influence on the choice of means of legal impact. Conclusions: today it is necessary to seek solutions on how to legally ensure the establishment, regulation, protection of social relations in the field of genomic research. It is also necessary to supplement the current legislation of the Russian Federation with norms of protective nature that would prohibit employers or other organizations from demanding or requesting genetic tests as a condition for being hired or receiving social benefits.