bluuebunny/crossref_metadata_2025 huggingface dataset:
VERIFICAÇÃO DOS PADRÕES DE IDENTIDADE E QUALIDADE DE PRODUTOS DE ORIGEM VEGETAL PRODUZIDOS PELA AGROINDÚSTRIA FAMILIAR
Authors: Santos Silva Elaine
Published: February 2022

A agricultura familiar é definida pela Organização das Nações Unidas para aAlimentação e a Agricultura (FAO) como todas as atividades agrícolas de base familiarque são geridas e operadas por uma família e que depende da mão de obra familiar (FAO,2017). Dentre as diferentes formas de agricultura, a agricultura familiar é a quepredomina, tanto nos países desenvolvidos, quanto nos em desenvolvimento.
FluxoRush – Um Jogo Digital para o Ensino de Programação
Authors: Gomes Fraga Sampaio Demerson
Published: February 2022

A tecnologia está sendo, cada vez mais, parte integral na vida daspessoas, que estão em contato com computadores, smartphones,tablets, dentre outros aparatos que facilitam o dia-a-dia.
COMPORTAMENTO DE FORRAGEIO E HIERARQUIA DAS ESPÉCIES DE BEIJA-FLORES NO CAMPUS DA UNIVERSIDADE ESTADUAL DE FEIRA DE SANTANA, BAHIA
Authors: Santos Ferreira Fernando Henrique
Published: February 2022

Os beija-flores (Aves: Trochilidae) são exclusivamente americanos, sendo aves de porte pequeno, com bicos finos e longos (Sick, 1997). Apresentam um vôo ágil do tipo pairado, tornando possível que estas aves possam adejar em frente às flores que visitam. Este tipo de vôo apresenta um alto gasto energético, o que leva estes animais a desenvolverem estratégias de forrageamento que lhes possibilite conseguir um elevado volume energético ao menor custo possível de energia (Feinsinger e Chaplin 1975).
DETECÇÃO MOLECULAR DE FATORES DE VIRULÊNCIA DE AMOSTRAS DE ESCHERICHIA COLI COLETADAS DE BEZERROS COM DIARREIA NO RECÔNCAVO BAIANO
Authors: Santana Gabrielle Casaes
Published: February 2022

A Escherichia coli faz parte da microbiota residente do lúmen intestinal de diversos vertebrados e normalmente não causa dano ao indivíduo. Entretanto cepas patogênicas podem causar enfermidades como a colibacilose, que é causa pela E. coli enterotoxigênica (ETEC) (STELLA, 2009).
EFEITO DO ESTRESSE SALINO NO DESENVOLVIMENTO E PRODUÇÃO DE PLANTAS DE Physalis angulata L.
Authors: De Jesus Carneiro Viviane
Published: February 2022

Nativa da região amazônica brasileira (Corrêa, 1984), a Physalis angulata L., também conhecida como camapú ou juá-de-capote, apresenta ampla distribuição principalmente em regiões tropicais e subtropicais do mundo (Ligarreto et al., 2005; Souza & Lorenzi, 2005). Com hábito de crescimento herbáceo, a espécie de ciclo anual (Rufato et al., 2008), tem despertado atenção especial em pesquisas voltadas ao estudo do seu potencial farmacológico (Santos, 2017; Onyegeme-Okerenta, 2019), em função da produção de compostos denominados de fisalinas (TOMASSINI et al., 2000).
UTILIZAÇÃO DE EXTRATO DE RESÍDUO AGROINDUSTRIAL DE ACEROLA COMO ANTIOXIDANTE EM FILMES DE POLI (ÁCIDO LÁTICO)
Authors: Dos Santos Mota Hellen Carolina
Published: February 2022

Ao longo do tempo, à medida que novas necessidades vão surgindo, novastecnologias e novos produtos passam a ser utilizados no desenvolvimento de embalagens.A crescente preocupação com a segurança alimentar, a extensão da vida de prateleira, arelação custo-eficiência, a conveniência para o consumidor e problemas ambientais, têmimpulsionado o desenvolvimento de novas embalagens, bem como de novas matériasprimaspara a sua elaboração (REIS, 2011).
TENDÊNCIA METODOLÓGICA DOS ESTUDOS DE REVISÃO EM EDUCAÇÃO NO PERIÓDICO “PROPOSIÇÕES” (2000 – 2016)
Authors: Carneiro Sousa Victória
Published: February 2022

O presente texto enfoca os resultados do estudo que mapeia e caracteriza as tendências metodológicas dos estudos de revisão na Revista Pro-Posições, no período 2000 a 2016. É parte integrante do projeto de pesquisa “Estudos de Revisão em Educação: tipologias e tendências metodológicas (2000-2016)”.
AVALIAÇÃO DO USO DE DEFENSIVOS QUÍMICOS NA AGRICULTURA FAMILIAR NO MUNICÍPIO DE CONCEIÇÃO DO JACUÍPE – BA POR MEIO DA ANÁLISE DE DADOS CATEGÓRICOS
Authors: De Carvalho Cerqueira Edileide
Published: February 2022

Segundo Relatório Nacional de Vigilância em Saúde de Populações Expostas a Agrotóxicos (2016), a incidência de intoxicações por agrotóxicos no estado da Bahia, apresentou constante aumento a partir do ano de 2009.
O GRAU DE EXPANSÃO DAS PEQUENAS CIDADES DO PORTAL DO SERTÃO E A FORMAÇÃO DE PERIFÉRIAS URBANAS
Authors: De Oliveira Santos Ythana
Published: February 2022

Nas quatro últimas décadas, são observadas profundas transformações nas cidades pequenas, como consequência de alterações que se desdobraram em várias escalas. Além delas aumentarem a população urbana, isso é resultado de novas relações de trabalho e de produção que foram engendradas durante todo o século XX, até porque novos aspectos da vida e dinâmica das cidades passaram a fortalecer a lógica urbana.
There are no equal opportunity infectors: Epidemiological modelers must rethink our approach to inequality in infection risk
Authors: Zelner Jon , Masters Nina B. , Naraharisetti Ramya , Mojola Sanyu A. , Chowkwanyun Merlin , Malosh Ryan
Published: February 2022

Mathematical models have come to play a key role in global pandemic preparedness and outbreak response: helping to plan for disease burden, hospital capacity, and inform nonpharmaceutical interventions. Such models have played a pivotal role in the COVID-19 pandemic, with transmission models—and, by consequence, modelers—guiding global, national, and local responses to SARS-CoV-2. However, these models have largely not accounted for the social and structural factors, which lead to socioeconomic, racial, and geographic health disparities. In this piece, we raise and attempt to clarify several questions relating to this important gap in the research and practice of infectious disease modeling: Why do epidemiologic models of emerging infections typically ignore known structural drivers of disparate health outcomes? What have been the consequences of a framework focused primarily on aggregate outcomes on infection equity? What should be done to develop a more holistic approach to modeling-based decision-making during pandemics? In this review, we evaluate potential historical and political explanations for the exclusion of drivers of disparity in infectious disease models for emerging infections, which have often been characterized as “equal opportunity infectors” despite ample evidence to the contrary. We look to examples from other disease systems (HIV, STIs) and successes in including social inequity in models of acute infection transmission as a blueprint for how social connections, environmental, and structural factors can be integrated into a coherent, rigorous, and interpretable modeling framework. We conclude by outlining principles to guide modeling of emerging infections in ways that represent the causes of inequity in infection as central rather than peripheral mechanisms.
Associations between lung function and physical and cognitive health in the Canadian Longitudinal Study on Aging (CLSA): A cross-sectional study from a multicenter national cohort
Authors: Duong MyLinh , Usman Ali , Ma Jinhui , Xie Yangqing , Huang Julie , Zaman Michele , Dragoman Alex , Jiatong Chen Steven , Farooqi Malik , Raina Parminder
Published: February 2022

Background

Low lung function is associated with high mortality and adverse cardiopulmonary outcomes. Less is known of its association with broader health indices such as self-reported respiratory symptoms, perceived general health, and cognitive and physical performance. The present study seeks to address the association between forced expiratory volume in 1 second (FEV1), an indicator of lung function, with broad markers of general health, relevant to aging trajectory in the general population.

Methods and findings

From the Canadian general population, 22,822 adults (58% females, mean age 58.8 years [standard deviation (SD) 9.6]) were enrolled from the community between June 2012 and April 2015 from 11 Canadian cities and 7 provinces. Mixed effects regression was used to assess the cross-sectional relationship between FEV1 with self-reported respiratory symptoms, perceived poor general health, and cognitive and physical performance. All associations were adjusted for age, sex, body mass index (BMI), education, smoking status, and self-reported comorbidities and expressed as adjusted odds ratios (aORs). Based on the Global Lung Function Initiative (GLI) reference values, 38% (n = 8,626) had normal FEV1 (z-scores >0), 37% (n = 8,514) mild (z-score 0 to > −1 SD), 19% (n = 4,353) moderate (z-score −1 to > −2 SD), and 6% (n = 1,329) severely low FEV1 (z-score = < −2 SD). There was a graded association between lower FEV1 with higher aOR [95% CI] of self-reported moderate to severe respiratory symptoms (mild FEV1 1.09 [0.99 to 1.20] p = 0.08, moderate 1.45 [1.28 to 1.63] p < 0.001, and severe 2.67 [2.21 to 3.23] p < 0.001]), perceived poor health (mild 1.07 [0.9 to 1.27] p = 0.45, moderate 1.48 [1.24 to 1.78] p = <0.001, and severe 1.82 [1.42 to 2.33] p < 0.001]), and impaired cognitive performance (mild 1.03 [0.95 to 1.12] p = 0.41, moderate 1.16 [1.04 to 1.28] p < 0.001, and severe 1.40 [1.19 to 1.64] p < 0.001]). Similar graded association was observed between lower FEV1 with lower physical performance on gait speed, Timed Up and Go (TUG) test, standing balance, and handgrip strength. These associations were consistent across different strata by age, sex, tobacco smoking, obstructive, and nonobstructive impairment on spirometry. A limitation of the current study is the observational nature of these findings and that causality cannot be inferred.

Conclusions

We observed graded associations between lower FEV1 with higher odds of disabling respiratory symptoms, perceived poor general health, and lower cognitive and physical performance. These findings support the broader implications of measured lung function on general health and aging trajectory.
Building Upon Service-Learning in Higher Education: Lessons Learned and Future Recommendations
Authors: Hyseni Duraku Zamira , Nagavci Mirjeta
Published: February 2022

Service-learning is an educational approach that has been proven to cultivate public conscience by combining the learning objectives of curriculum content with student involvement in community service. The current study explores the various impacts of a service-learning project directed toward psychology students tutoring children with disabilities during the COVID-19 pandemic. The results are taken from the perspective of 114 Kosovar students and 20 parents of children with disabilities involved in the project. The results show that the COVID-19 pandemic has amplified the challenges that families of children with disabilities already faced. The tutoring sessions had a positive effect on family well-being and children’s academic achievements. The students reported improved attitudes toward children with disabilities and increased self-efficacy and motivation for community engagement. Service-learning is promoted as a teaching method that attends to societal needs, helps students reflect on their experiences and competency, facilitates a better understanding of the consequences of public policy, and contributes to responsible citizens and compassionate professionals. This study adds to the literature by highlighting the substantial results and potential benefits of service-learning and individualized support for children with disabilities and their parents by discussing the implications for practice and future research.
A FUNÇÃO GEOESTRATÉGICA DAS ÁGUAS SUBTERRÂNEAS PARA OS PAÍSES PLATINOS
Authors: Zeni Vera Lucia Fortes , Trindade Larissa  de Lima , Scheibe Luiz Fernando
Published: February 2022

A Bacia Platina é das mais extensas do mundo, composta por três grandes sistemas hídricos: rios Paraná, Paraguai e Uruguai, que formam o Rio da Prata (estuário), e abriga um dos mais estratégicos aquíferos, o Sistema Aquífero Integrado Guarani/Serra Geral (SAIG/SG). Por meio de pesquisa bibliográfica e documental o artigo tem o objetivo de demonstrar a função geoestratégica das águas subterrâneas para os países da Bacia do Prata: Brasil, Paraguai, Uruguai, Argentina e Bolívia. O trabalho evidencia que essas águas transfronteiriças configuram elemento de solidariedade entre esses países, exercendo função essencial, expressada nos aspectos econômicos, sociais e ambientais. Contudo, algumas práticas cotidianas, como a mercantilização da água, geram aspectos contrários à globalização da solidariedade, como o exacerbamento do individualismo e a difusão de territorialidades de controle. O modelo liberal vigente de crescimento econômico é ilimitado, especializado em algumas espécies produtivas, e não respeita os processos naturais e seus tempos. Neste aspecto, os impactos em escala local podem ser atribuídos a uma demanda de escala internacional na busca por espaços para produzir, especialmente nas regiões com fartura de água, como é o caso da Bacia Platina, ocasionando gradativamente a destruição e a transferência desse patrimônio.
INTRODUCTION TO SPECIAL ISSUE: THE UNIVERSITY OF THE WESTERN CAPE DIGITAL INCLUSION AND WOMEN ENTREPRENEURSHIP SERIES 2021
Authors:   University of the Western Cape, Esau Michelle
Published: February 2022

This special issue on Digital inclusion and women entrepreneurship features a selection of papers and review articles on themes and issues raised in the University of the Western Cape (UWC) webinar series on the topic held in the 2021 academic year.
Scholars and Literati at the University of Heidelberg (1386–1800)
Authors: De la Croix David , Stelter Robert
Published: February 2022

This note is a summary description of the set of scholars and literati who taught at the University of Heidelberg from its inception in 1386 to the eve of the Industrial Revolution (1800).
News
Authors: Wolf Kelsey
Published: February 2022

Announcement of the five doctors inducted into the National Optometry Hall of Fame and an overview of the OHS's "Blast from the Past" lecture at Optometry's Meeting 2021.
Towards Improving Decision-making Capabilities in Higher Education for Stressful Periods: A Participatory Action Research Approach (PARA)
Authors: Mabade Avhurengwi Samson
Published: February 2022

Of late, South African higher education sectors have been engulfed with spontaneous and frequent protests by students. These protests have often led into violence and horrifying physical injuries to some victims, some victims being students, while some are members of the public. Amongst others, the latest episodes of the #FeesMustFall movement and protests bear witness. During this violence, valuable time is lost and assets are vandalized and also destroyed. The state has also suffered implacable budgetary loses when property gets torched and destroyed. Various studies have mushroomed investigating the causes of these violence and in addition their resolves. However, this literature has a gap because it fails to investigate the critical issue on decision-making during critical times. Decision-making plays a major role during these times. However, decision-making being not a simplistic issue needs to be developed to an extent of worthwhile decision-making and avoiding naïve arguments as well as opportunism. The aim of this article is to improve decision-making capabilities through knowledge management and critical thinking. Critical thinking enhances the potential of being judgmental. This qualitative study which uses desktop approach and PARA focuses on the higher education sector of South Africa. However, the higher education sector is vast as it includes hundreds of TVET colleges and several universities for example. For the purpose of this study, one rural-based university was purposively selected for study. The data was collected through qualitative technique. Collected data was analyzed using thematic code and results presented as main report
Hydrochemical characteristics and D–O–Sr isotopes of groundwater and surface water in the northern Longzi county of southern Tibet (southwestern China)
Authors: Yu Xiao , Zhang Yunhui , Liu Pei , Huang Haoqing , Huang Xun
Published: February 2022

The protection of water resource has been the significant mission globally. Hydrochemical compositions and recharge source are the critical tools to analyze the water quality. In this study, 18 surface water and 5 groundwater samples were collected along the Xiongqu and Sequ rivers in the northern Longzi county of southern Tibet. The combination of factor analysis, correlation of major ions, geochemical modeling, and D–O–Sr isotopes were employed to clarify the hydrochemical compositions and recharge source. The concentration of major ions followed the abundance order of

SO

4

2
−

{\text{SO}}_{4}^{2-}

>

HCO

3

−

{\text{HCO}}_{3}^{-}

> Cl− for anions and Ca2+ > Mg2+ > Na+ > K+ for cations. Ca–HCO3 and Ca–SO4 types were identified for groundwater and surface water. Based on ratios of major ions and geochemical modeling, it is proposed that the dissolutions of gypsum, calcite, and dolomite controlled the hydrochemical compositions. D–O isotopes indicated a meteoric origin for surface water and groundwater, with the recharge elevation of 2,519–3,731 m. The 87Sr/86Sr ratios of groundwater and surface water were compatible with those of sulfate and carbonate minerals, revealing the main type of minerals interacting with water. The achievements of this study can provide a vital reference for groundwater utilization and protection in the Longzi county and adjacent areas in the Tibet.
Properties of Mexican bloodwood (Haematoxylum campechianum L.). Part 1: anatomical and colourimetric characteristics
Authors: Koddenberg Tim , Brischke Christian , Emmerich Lukas , Kick Annika B. E.
Published: February 2022

Bloodwood (Haematoxylum campechianum L.) native to Central America has been known as dye source since the prehistoric times by the Maya. Nowadays, bloodwood is increasingly used for plantations but its use for furniture, flooring, or fencing is only of regional importance. The reason is seen in lacking knowledge of its properties. To expand that knowledge, this Part 1 of the two-part study series investigated the anatomy and the discolouration due to leaching of heartwood of H. campechianum. Anatomical characteristics were described qualitatively and quantitively using scanning electron microscopy and X-ray micro-computed tomography. Detailed wood anatomical data are presented, together with numerical analyses of cell parameters. Apart from wood anatomy, colourimetric analyses were obtained after 10 leaching cycles. The colour change of the wood due to water exposure was determined measuring in CIE L*a*b* colour system. In addition, the extinction of the leachate was determined spectrophotometrically after each leaching cycle. The resulting colour change was evaluated according to colour change after each cycle. The most prominent change in colour was observed for the first cycle due to leaching. Because of the extensive leaching of extractives, further investigation might address the effect of leaching of water-soluble extractives on adhesion properties of bloodwood.
Bulk and grain boundary diffusion of Ag in γ-FeNi alloy
Authors: Divinski S. V. , Kang Y.-S. , Lee J.-S. , Herzig Chr.
Published: February 2022

Solute diffusion of Ag in polycrystalline γ-Fe-40 wt.% Ni alloy was studied by means of the radiotracer technique. For bulk and grain boundary diffusion, the following Arrhenius parameters were established:

D
v
0

=
1.2
×

10

−
3

m
2

/
s

$ D_v^0 = 1.2 \times {10^{ - 3}}{m^2}/s $

and Q
v = 279 kJ/mol and P
0 = 8:1 ⨯ 10–14 m3/s and Q
gb = 126 kJ/mol, respectively. The diffusion profiles reflect the very low Ag solid solubility which was estimated in the alloy via the specific activity of the applied 110mAg radiotracer.
Thermodynamics of ordered intermetallic compounds containing point defects
Authors: Breuer J. , Sommer F. , Mittemeijer E. J.
Published: February 2022

A pair interaction model applying the Bragg–Williams approach is presented. The formalism is given in a general form; ternary ordered compounds with different crystal structures and all possible point defect types are considered. Some applications are discussed. The Bragg –Williams approach is an easily applicable formalism that leads – proper use supposed – to accurate predictions concerning thermodynamic data as well as defect concentrations.
The (γ + γ′
)/γ′
phase boundary in the Ni–Al phase diagram from 600 to 1200
°
C
Authors: Ma Yong , Ardell Alan J.
Published: February 2022

The phase boundary separating the γ + γ′ and γ′ regions of the Ni –Al phase diagram (the γ solvus) was established over the temperature range 600– 1200 °C. The γ phase is the Ni –Al solid solution, and γ′ is (non-stoichiometric) Ni3Al. Cast alloys containing 22.0, 22.2, 22.4, 22.6, 22.8 and 23.0 at.% Al, all compositions being within ± 0.03 at.%, were used in the experiments. At temperatures from 1000 to 1200 °C, the γ solvus was determined using aging treatments designed to eliminate the dendritic structure in the as-received castings. At lower temperatures, from 600 to ≈ 900 °C, dissolution experiments were conducted. The method takes advantage of the absence of a barrier to the dissolution of a dispersed phase. Specimens of the supersaturated γ′ phase were aged at low temperatures, 600 or 650 °C, for long times (up to 633 h), to produce fine dispersions of the coherent γ phase precipitates. These specimens were then re-aged at 10 –20 °C intervals of temperature and re-examined to determine whether the γ phase precipitates had dissolved. The absence of the γ phase precipitates enabled the phase boundary to be located to within ± 10 °C for an alloy of known composition, or ± 0.03 at.% at a given temperature, from 600 to 900 °C. The phase boundary generally agrees with the lower end of Al concentrations established in previous research.
The effect of Cu and Al on the mechanical properties of gravity-cast hyper-eutectic Zn–Al-based alloys
Authors: Türk Ahmet , Durman Mehmet , Kayali Sabri E.
Published: February 2022

A series of Zn– Al-based alloys, one group with 1% Cu and the other without Cu, was produced by using gravity casting. The effect of Al content on hardness, ultimate tensile strength (UTS), impact strength, and tensile creep behaviour at 120 °C and an applied stress of 40 MPa has been investigated. It has been found that the hardness and UTS of the alloys considerably increased with increasing Al content, but the creep strength decreased. The impact strength of the alloys improved with increasing Al content up to 7.5% and then reduced gradually with further increase in Al content. In addition, the effect of 1% Cu addition on the mentioned properties has been determined. While the addition of 1% Cu had a profound effect on increasing the hardness, UTS, and creep strength, it did not have a significant effect on the impact strength of the alloys. Metallographic examinations showed that an increasing Al content of the alloys increased the volume fraction of the Al-rich β dendrites in expense of a decreased volume fraction of the eutectic, which is in principle responsible for the change in mechanical properties of the alloys depending on the Al content
The damping behavior of a Ni-50 at.%Ti shape memory alloy
Authors: Yin Fuxing , Takamori Susumu , Ohsawa Yoshiaki , Kawahara Kohji
Published: February 2022

In order to utilize the shape memory alloys (SMAs) for prospective damping applications, a near equiatomic NiTi alloy was investigated on a dynamic mechanical analyzer in the infrasonic frequency range. A high damping capacity stable to the variation of temperature can be obtained during a two-stage phase transformation and in the martensite state approaching to the martensite-parent phase transformation temperature in the NiTi SMA. The transient damping peaks associated with the phase transformation in the NiTi SMA shows a strong frequency dependence in both solutionized and annealed specimens. The frequency dependence parameter, n, was found to be in the range 0.3 – 0.6. For the applied strain amplitudes from 8.5 × 10–6 to 5.0 × 10 –5 a clear strain amplitude dependence was not observed in the damping peaks, except for the solutionized specimens. While the damping capacity of the martensite state, characterized at 300 K, showed obvious frequency dependences in both the solutionized and annealed specimens, only the annealed specimens manifested the strain amplitude dependence. The different damping behavior was attributed to the internal structure of martensite, including dislocations, the twinning types and variant interfaces, changeable with the prior thermomechanical treatments.
In-situ investigation of strain relaxation in an Al/Si–MMC using high energy synchrotron radiation
Authors: Pyzalla Anke R. , Reetz Björn , Jacques Alain , Feiereisen Jean-Pierre , Ferry Olivier , Buslaps Thomas , Reimers Walter
Published: February 2022

Thermal and mechanical loading induce phase specific strains/stresses in MMCs. At elevated temperature part of the phase-specific strains/stresses relax. The relaxation of the phase-specific strains/stresses is determined by in-situ experiments using white high-energy synchrotron radiation. The experiments reveal that such time-resolved strain measurements are possible and that short-time phenomena can be accessed using white high-energy synchrotron radiation. The elastic strain relaxation behavior is similar for all lattice planes accessed. The influence of the temperature on the characteristic relaxation time is determined. The characteristic relaxation time appears to be independent of the amount of plastic deformation the sample suffers before strain/stress relaxation.
A Galerkin strategy for tri-hybridized mixture in ethylene glycol comprising variable diffusion and thermal conductivity using non-Fourier’s theory
Authors: Wang Fuzhang , Nazir Umar , Sohail Muhammad , El-Zahar Essam R. , Park Choonkil , Thounthong Phatiphat
Published: February 2022

This research is conducted to investigate heat and mass transport past over a stretched surface having pores in a pseudo-plastic model. To study porosity effect, Darcy Forchheimer relation is used. Thermal and mass transport expressions are derived by engaging the double diffusion theories as extensively used by researchers proposed by Cattaneo and Christov. Furthermore, the thermal performance is studied by mixing the tri-hybrid nanoparticles in a pseudo-plastic material. The phenomenon of boundary layer is used to derive the complex model. The correlation for tri-hybrid nanoparticles is used to convert the model partial differential equations into ordinary differential equations (ODE) along with appropriate similarity transformation. The transfigured ODEs are coupled nonlinear in nature, and the exact solution is not possible. To approximate the solution numerically, finite element scheme (FES) is used and code is developed in MAPLE 18.0 for the graphical results, grid independent survey, and tabular results. The obtained results are compared with the published findings that confirm the accuracy and authenticity of the solution and engaged scheme. From the performed analysis, it is concluded that FES can be applied to complex engineering problems. Furthermore, it is monitored that nanoparticles are essential to boost the thermal performance and higher estimation of Schmidt number control the mass diffusion.
Der harmonisierte Aktionärsschutz bei Geschäften mit nahestehenden Personen und Unternehmen
Authors: Florstedt Tim
Published: February 2022

Die Kategorie der Geschäfte mit nahestehenden Personen und Unternehmen hat durch die reformierte Aktionärsrechterichtlinie eine enorme Bedeutung in Europa erlangt. Zuvor hatten nur wenige Mitgliedstaaten geschlossene Regelungssysteme zu solchen Geschäften geschaffen, seit dem Jahr 2019 sind besondere Verfahrens- und Offenlegungsvorschriften unionsweit verbindlich. Die Richtlinienvorgaben haben den nationalen Gesetzgebern erhebliche Freiräume belassen, um die neuen Schutzkonzepte in die nationalen Rechtssysteme nahtfrei einfügen zu können. Der Beitrag vergleicht die in den Mitgliedstaaten gewählten Umsetzungslösungen und bewertet die erreichte Harmonisierung des Gesellschaftsrechts. Er fordert eine ausgewogenere Abstimmung mit dem Bilanzrecht ein und plädiert dafür, das neue Recht als bedeutsames Teilstück eines europäischen Konzernrechts anzusehen.
Der fehlbesetzte Aufsichtsrat und seine Folgen
Authors: Rieckers Oliver
Published: February 2022

In seiner IKB-Entscheidung vom 19. Februar 2013 hat der II. Zivilsenat des BGH eine Anwendung der Lehre vom fehlerhaften Bestellungsverhältnis auf die Stimmabgabe und Beschlussfassung im Aufsichtsrat abgelehnt. Sind Aufsichtsratswahlen nichtig oder werden sie erfolgreich angefochten, kann dies daher zur Unwirksamkeit des gesamten Organhandelns einschließlich aller zwischenzeitlich gefassten Aufsichtsratsbeschlüsse führen. Die vom BGH zur Abmilderung dieser Rechtsfolgen herangezogene Einzelfalllösung kann die bestehende Rechtsunsicherheit nicht vollständig beseitigen. Der Beitrag untersucht, in welchen Fallgruppen nach wie vor Klärungsbedarf besteht, und analysiert die zur Verfügung stehenden Abhilfemöglichkeiten de lega lata und de lege ferenda.
Structural diversity among multinary pnictide oxides: a minireview focused on semiconducting and superconducting heteroanionic materials
Authors: Baranets Sviatoslav , Darone Gregory M. , Bobev Svilen
Published: February 2022

Incorporating different anions with varied ionic sizes and charges is a rapidly growing approach to bring out unusual physical properties among various classes of solid-state materials, pnictides and chalcogenides in particular. This minireview is focused on hetero-anionic materials based on the pnictogens, which have been demonstrated to offer an impressive diversity of crystal chemistry and electronic structures. In addition, many pnictide oxides or oxypnictides, over the course of the last decade, have been shown to exhibit a broad spectrum of superconducting, magnetic, and semiconducting properties. However, the structural diversity of the mixed-anion materials is far greater than the several known structure types, or their variants, of the well-known layered superconductive materials. Therefore, with this treatise, we aim to provide a comprehensive overview of the crystal chemistry of pnictide oxides by recounting almost 40 different structures of such ternary and multinary compounds. In addition to the structural aspects, we also highlight some of the challenges associated with the synthesis, and briefly summarize reported, to date, physical properties of this remarkable class of solids.
Syntheses directed by ionic liquids: structures and properties of six novel lanthanide 1,3,5-benzenetrisbenzoate frameworks
Authors: Wang Hua-Rui
Published: February 2022

Reactions of lanthanide nitrate, 1,3,5-benzenetrisbnzoic acid (H3BTB) and [RMI]Br ionic liquids (RMI = 1-alkyl-3-methylimidazolium; R = ethyl, propyl or butyl), gave rise to six novel lanthanide–organic frameworks (LOFs) [Ln(BTB)H2O], where Ln = Nd 1, Sm 2, Gd 3, Dy 4, Ho 5 and Er 6. These compounds have been characterized by elemental analysis, IR spectra, thermogravimetric analysis, single-crystal and powder X-ray diffraction. Compounds 1–6 are isostructural and consist of infinite rod-shaped lanthanide-carboxylate building units, which are further bridged by trigonal-planar BTB ligands to give non-interpenetrated open 3D frameworks. The results of variable-temperature magnetic studies have shown that the magnetic interaction between the Ln(III) ions in 3, 5 and 6 is mainly due to antiferromagnetic coupling as well as the depopulation of the Stark levels.
Arnoldo Martínez Verdugo, Obra de un dirigente comunista
Authors: Ortega Jaime
Published: February 2022

Reseña a: Arnoldo Martínez Verdugo, Obra de un dirigente comunista
Editorial
Authors: Martínez Delgado Gerardo
Published: February 2022

Editorial número 14
Data Acquisition of Ambulatory Air Pressure Test Device Based on Fuzzy Algorithm
Authors: Zhang Haiying
Published: February 2022

The data of air pressure test device have different resistive currents under different load strengths, so it is necessary to collect the data of locomotive air pressure test device automatically, and the automatic data acquisition method of locomotive pressure test device based on fuzzy algorithm is put forward. Such elements can also be integrated to the health care system. The input control variable model of locomotive air pressure test device data calculation is constructed. Under the adjustment of pressure and pressure gain, the locomotive no-load output pressure is used as the state characteristic quantity, the output stability of locomotive pressure test device data is analyzed under the mode of high switching frequency, and the electromagnetic interference characteristics of locomotive pressure test device data output are analyzed by combining the adaptive error feedback adjustment method. According to the fuzzy state characteristics of locomotive air pressure test device, the vibration analysis and error adjustment of locomotive pressure test device data are carried out, and the adaptive parameter fusion model of locomotive pressure test device data is established. Combined with virtual air pressure adaptive control and output power adaptive adjustment method, the automatic data acquisition of locomotive pressure test device is realized. The simulation results show that the automatic data acquisition accuracy and stability of the locomotive air pressure test device are high, and the adaptability and environmental adaptability of the data calculation of the locomotive pressure test device are improved.
Développement de compétences dites du 21e siècle chez les enfants à l’éducation préscolaire grâce à la programmation et à la robotique : une recherche-action
Authors: Latulipe Nancy , Raby Carole , O'Connell Lynda , St-Onge Geneviève
Published: February 2022

Une communauté d’apprentissage a été mise en place pour favoriser la formation continue d’enseignantes de maternelle à l’utilisation de la programmation et de la robotique pour développer des compétences dites du 21e siècle chez les enfants. À travers une démarche de recherche-action, les participantes se sont formées mutuellement. Elles ont conçu et expérimenté en classe des activités de programmation et de robotique. Les données ont été recueillies par des entrevues auprès des enseignantes et des observations filmées auprès de deux dyades dans chaque classe, trois fois durant l’année. Les résultats mettent en lumière certaines compétences du 21e siècle développées par les enfants.
Laparoscopically Treated Giant Gastric Bezoar Complicated with Large Ulcer in Young Patient
Authors: Ulusoy Cemal , Nikolovski Andrej , Yavuz Giray , Saydam Tuba , Demirel Ali İlbey
Published: February 2022

Gastric bezoars are rare but well known intraluminal formations in the gastrointestinal system. Reports for gastric bezoar treatment include dissolution, endoscopic retrieval and surgery (open and laparoscopic). We are presenting a case of 32 years old male patient presented with giant gastric bezoar complicated with large ulcer. The patient was operated laparoscopically with success. Laparoscopic surgery is safe alternative to open surgery for giant gastric bezoars treatment.
Computed Tomography-Guided Percutaneous Lung Biopsy Complicated by Symptomatic Systemic Air Embolism: Case Report and Review of the Literature
Authors: Ledas Giedrius , Jocius Donatas , Jarašūnas Juozas , Jagelavičius Žymantas
Published: February 2022

Computed tomography-guided percutaneous core needle biopsy of the lung is an undoubtedly useful and well-established interventional radiological procedure for the diagnosis of indeterminate pulmonary lesions. Complications of percutaneous core needle biopsy, such as pneumothorax and hemoptysis are considered mild and self-resolving, however systemic air embolism is considered a potentially fatal complication. Systemic air embolism occurs when the air enters a pulmonary vein secondary to a percutaneous CT-guided lung biopsy and is expelled into systemic circulation. Systemic air embolism is extremely rare: incidence of clinically apparent SAE is estimated at 0.061–0.17%, while clinically silent systemic air embolism may be as high as 3.8–4.8%. This study reports a case of air embolism in the cerebral arteries that resulted from a complex CT-guided percutaneous core needle biopsy of the lung. The present case highlights the main mechanisms of this pathology, risk factors, importance of complete thoracic CT after procedure, as well as management of rare complications.
Mérito y empleo público: retos y desafíos de la administración pública contemporánea
Authors: Cao Horacio , García Cívico Jesús , González Barragán Carlos , Ibarra Vélez Sandra Lisset , López Radrigán Bernardita , Pardo Schlesinger Cristina , Torres Corredor Hernando
Published: February 2022

El Congreso Internacional de Meritocracia se ha llevado a cabo desde 2016, por iniciativa de la Comisión Nacional del Servicio Civil (CNSC), como un escenario de análisis sobre el mérito, en tanto mecanismo central para el acceso, el ascenso y la permanencia en los empleos públicos, con la finalidad de lograr un Estado eficiente, a partir de la profesionalización de la burocracia. Para la tercera versión del congreso, además de la CNSC, en calidad de organizadoras, participaron la Universidad Nacional de Colombia y la Universidad Libre. Bajo el título de “Mérito y empleo público: retos de la administración pública contemporánea”, el evento buscó generar un espacio de diálogo nacional e internacional, para reflexionar sobre los desafíos que la administración pública moderna enfrenta en la implementación y consolidación de la meritocracia en el servicio civil. Para esto, se incorporó el punto de vista de académicos y expertos que ejercen un rol directivo en la administración y el de los operadores de la justicia.
Infancias, adolescencias y juventudes desde la Acción Social y la Investigación: Un balance desde el PRIDENA con los proyectos vigentes a marzo 2021
Authors: Hernández Solano Alejandra , Bolaños Blanco María Cristina , Rodríguez Monge Jose Armando
Published: February 2022

Introducción:

El siguiente artículo recupera el quehacer universitario vinculado con infancias, adolescencias y juventudes desde dos de sus tres áreas sustantivas: la Acción Social y la Investigación.

 

Objetivo:

Analizar los proyectos de Acción Social e Investigación vinculados con niñas, niños, adolescentes y jóvenes de la Universidad de Costa Rica vigentes a marzo 2021, a la luz del Atlas de Desarrollo Humano Cantonal 2020; con el fin de generar líneas orientadoras de trabajo con la población que contribuyan a la promoción de sus derechos.

 

Método:

Partiendo del Enfoque de Derechos Humanos y de Juventudes, se llevó a cabo una recuperación de  proyectos de Acción Social e Investigación vigentes a marzo 2021. Posterior a ello, se clasificaron según ejes temáticos y su ubicación geográfica; información que posteriormente fue triangulada con el Índice de Desarrollo Humano Cantonal.

 

Resultados:

Se presenta una mayor concentración de proyectos en la provincia de San José y en cantones con alto Índice De Desarrollo Humano. A su vez, se presentan cantones con índices poco favorables que evidencian una presencia baja o nula por parte de la academia. Por último, existe una tendencia mayoritaria a desarrollar proyectos sobre los ejes temáticos de Educación y Salud.

 

Conclusiones:

El repensar del quehacer de la universidad y su papel frente a la realidad social se estima fundamental, para garantizar un posicionamiento, compromiso y ejercicio crítico que, responda a las necesidades e intereses de grupos históricamente excluidos y vulnerados, como lo han sido las niñas, niños, adolescentes y juventudes en el territorio costarricense.
Determinantes del saneamiento ambiental en Costa Rica
Authors: Delgado Mora Estefani , Murillo Rojas Susana
Published: February 2022

Introducción: el saneamiento ambiental representa uno de los retos más complejos en las agendas políticas nacionales y locales, ya que la planificación y gestión de proyectos y estrategias de desarrollo orientadas a la justicia ambiental deben partir desde una perspectiva holística que contribuya al mejoramiento de la calidad de vida de las personas y a la generación de entornos ambientalmente sostenibles.

Objetivo general: el artículo tiene como objetivo analizar los principales determinantes que inciden en las condiciones de saneamiento ambiental en Costa Rica, con el fin de proveer un panorama general sobre los actuales retos, oportunidades y recomendaciones que enfrentan las municipalidades para mejorar la situación ambiental de sus comunidades.

Método y técnicas: se realizó un análisis del saneamiento desde seis enfoques teóricos propuestos en el Seminario de Graduación titulado «Principales determinantes que inciden en las condiciones de saneamiento ambiental en las nueve regiones del territorio costarricense, establecidas por el Ministerio de Salud». La metodología tuvo como base estudios de caso, mediante los cuales se identificaron los determinantes que inciden en las condiciones del saneamiento ambiental y, para la construcción de estos, se seleccionó una muestra de nueve municipalidades y se entrevistó a las personas encargadas de los departamentos de gestión ambiental.

Resultados: como parte de los resultados, se identificaron determinantes de tipo geográficos, ambientales, socioculturales, económicos y políticos, de los cuales forman parte del entramado de estrategias de gestión ambiental implementadas por las municipalidades en sus respectivos espacios locales. 

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La categoría Estado en el curriculum de la Escuela de Trabajo Social
Authors: Fallas Jiménez Yessenia Isabel
Published: February 2022

Introducción: El proyecto de investigación investigación Fundamentos históricos de la génesis del Estado moderno y su relación con la producción capitalista realizó entre otras actividades un análisis de la forma en la que se aborda en la Escuela de Trabajo Social la discusión sobre el Estado y la política social a partir de los cursos Teoría del Estado y Política Social.

Objetivo: el primer objetivo del proyecto establece: “Identificar los principales fundamentos teóricos dentro del campo marxista que aportan elementos para la comprensión del Estado moderno”, derivado del estudio de las fuentes teóricas dentro campo marxista, se realizó un análisis del contenido y de los aspectos metodológicos contenidos en los cursos para el abordaje de estas categorías.

Método: la investigación centra su atención en elementos técnicos referidos a la investigación bibliográfica y documental. Para el abordaje de este análisis se estudió el programa de ambos cursos identificando tendencias en la estrategia pedagógica y en la perspectiva teórica de los contenidos de ambos programas.

Resultados: se identificó el predominio de una tendencia fragmentaria en el abordaje de las categorías Estado y política Social, aprehendiendo los elementos históricos como planos de fondo historeográficos para el análisis de los objetos y no, como elementos que constituyen la naturaleza social de los mismos.

Conclusiones: si bien es posible identificar en los contenidos de los cursos algunos asuntos referidos al proceso histórico, los aspectos metodológicos del abordaje fragmentan la comprensión de dicho proceso privilegiando un análisis tecnicista y administrativista del Estado y la política social.
Aportes y retos del Trabajo Social en el abordaje de lo ambiental
Authors: Calvo Salazar Cindy
Published: February 2022

Introducción: el presente artículo recupera los principales resultados en el marco del proyecto «VI 215-B6-092 Trabajo Social, sociedad y ambiente» de la Escuela de Trabajo Social de la Universidad de Costa Rica.

Objetivo: identificar los aportes y retos de la investigación e intervención del trabajo social en temas ambientales.

Método: esta investigación se sustentó en la revisión documental de los Trabajos Finales de Graduación (TFG) de la Escuela de Trabajo Social en temas ambientales en el periodo de 1983 al 2014. Asimismo, se realizó un cuestionario en línea y un grupo focal con profesionales en ejercicio que abordan temáticas ambientales en el país.

Resultados: el trabajo social ha estudiado e intervenido en áreas ambientales muy diversas. De acuerdo con la perspectiva de estudiantes y profesionales, la profesión ha aportado fundamentalmente en la comprensión crítica y holística de las situaciones presentadas, fomentando una educación y una cultura de cambio amparada en una visión de derechos humanos. Como retos, se identifica la necesidad de que la Escuela de Trabajo Social apueste de manera más contundente en la formación de profesionales conocedores del área ambiental, así como a ejercer una labor interdisciplinaria con alianzas interinstitucionales e intersectoriales.

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Dilemas em práticas avaliativas e necessidades formativas de tutores no Método Problem-Based Learning (PBL)
Authors: Moreira Jefferson Da Silva , Barreto dos Santos David Moisés
Published: February 2022

Este artigo apresenta resultados de investigação cujo objetivo foi identificar e discutir dilemas profissionais no campo da avaliação da aprendizagem e as necessidades formativas de professores-tutores que atuam no método PBL do curso de Engenharia de Computação de uma universidade pública do Estado da Bahia. Com efeito, a seguinte questão norteadora subsidiou o desenvolvimento do processo investigativo: quais dilemas profissionais, em termos de processos avaliativos, e necessidades formativas de professores-tutores de uma universidade pública podem ser evidenciados mediante o método de casos de ensino? Respaldamo-nos teoricamente nas reflexões de Shulman; Mizukami; Zabalza; Cunha, entre outros. Metodologicamente, caracteriza-se por ser um estudo descritivo-analítico, de abordagem qualitativa. Os dados foram coletados por meio da aplicação de questionário sócioprofissional e um caso de ensino, cuja análise esteve pautada em pressupostos da técnica de análise de conteúdo. Os dados apontam que as necessidades formativas dos participantes concentram-se, majoritariamente, na dimensão pedagógica, evidenciando, assim, fragilidades na base de conhecimento para o ensino desses profissionais. No que diz respeito aos dilemas, os depoimentos dos tutores destacaram a condução complexa de práticas avaliativas junto aos discentes no contexto das sessões tutoriais e a postura antiética de estudantes nas práticas avaliativas, especialmente, autoavaliação. Mediante tais aspectos, apontamos a necessidade do delineamento de uma proposta de formação permanente para os sujeitos da pesquisa, tendo como objetivo seu desenvolvimento profissional docente.