bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis and catalytic properties of nickel salts of Keggin-type heteropolyacids embedded metal-organic framework hybrid nanocatalyst
Authors: Zhang Qiuyun , Ling Dan , Lei Dandan , Deng Taoli , Zhang Yutao , Ma Peihua 
Published: January 2020

Abstract
Nickel salts of Keggin-type heteropolyacid on Zr(IV)-based metal-organic frameworks (UiO-66) has been synthesized via ion-exchange followed by a facile one-pot hydrothermal method. The synthesized catalysts underwent FT-IR, N2 adsorption-desorption, powder XRD, SEM and TEM analysis. The NiHSiW/UiO-66 catalyst was used as a new and effective solid acid in the catalytic transfer free fatty acid to biodiesel with an optimum conversion of 86.7%. The excellent activity of the NiHSiW/UiO-66 nanocatalyst was closely related to its high specific surface area, nano-sized catalyst, and the synergistic effects of NiHSiW salts and UiO-66 matrix. Importantly, a relatively stable catalytic performance was achieved for 8 repeated cycles. Finally, kinetics of the esterification reaction have been assumed to be of pseudo first order.
Removal mechanism of phosphorus by carbothermic reduction of steel slag
Authors: Xue Yuekai , Li Chenxiao , Zhou Chaogang , Zhao Dingguo , Wang Shuhuan 
Published: January 2020

AbstractThe high-P content in steel slag limits its utilization in the next heats of steelmaking. In this work, P2O5-containing slag was reduced by carbon at high temperatures with flowing N2. The P-containing substances in the off-gas were collected after water cooling. Both XRD analysis and thermodynamic calculations indicate that the gas produced by P2O5 reduction is mainly composed of P2. The actual reduction Gibbs free energy of P2O5 is less than that of FeO; while the reduction rate of FeO is higher than that of P2O5 due to the good kinetic conditions and the low activation energy. The reduction of P2O5 agrees well with the second-order reaction, whose reduction rate is controlled by the mass transfer in the slag. The reduction of FeO agrees well with the first-order reaction, whose reduction rate is mainly controlled by the interface chemical reaction.
Evaluation of Irreversibility and Optimal Organization of an Integrated Multi-Stream Heat Exchange System
Authors: Boykov Sergey Yurevish , Andresen Biarne , Akhremenkov Andrey Aleksandrobish , Tsirlin Anatoly Mixaylovich 
Published: January 2020

Abstract
This work proposes a structure synthesis and surface distribution algorithm in a heat exchange system for the case when all heat capacity rates and inlet temperatures of the hot streams are constant, while cold streams also have outlet temperatures set. The algorithm includes the possibility of changing the phase state of the contacting streams. The synthesis is based on minimization of dissipation for a given total heat load in the form of minimum total contact surface area, which again correlates with the cost of the heat exchange system. The proposed algorithm can be considered to follow a thermodynamic rationale and as development of pinch analysis.
Food reward and gut-brain signalling
Authors: Edwin Thanarajah Sharmili , Tittgemeyer Marc 
Published: January 2020

Abstract
The increasing availability of ultra-processed, energy dense food is contributing to the spread of the obesity pandemic, which is a serious health threat in today’s world. One possible cause for this association arises from the fact that the brain is wired to derive pleasure from eating. Specifically, food intake activates reward pathways involving dopamine receptor signalling. The reinforcing value of specific food items results from the interplay between taste and nutritional properties. Increasing evidence suggests that nutritional value is sensed in the gut by chemoreceptors in the intestinal tract and the hepatic portal vein, and conveyed to the brain through neuronal and endocrine pathways to guide food selection behaviour. Ultra-processed food is designed to potentiate the reward response through a combination of high fat and high sugar, therebye seeming highly appetizing. There is increasing evidence that overconsumption of processed food distorts normal reward signalling, leading to compulsive eating behaviour and obesity. Hence, it is essential to understand food reward and gut-brain signalling to find an effective strategy to combat the obesity pandemic.
Binary solvent systems for durable self-adhesive conductive hydrogels
Authors: Wu Yunxuan , Li Jie , Jin Yangfu , Zhou Mi 
Published: January 2020

Abstract
Conductive hydrogels without adhesiveness and durability characteristics face great challenges in practical applications, such as inconvenient use, unstable contact voltage, and difficult to store. Herein, we present sodium polyacrylate (PAANa) hydrogels with binary solvent systems composed of water and an alcohol [ethylene glycol (EG), glycerol (GLY), or poly(ethylene glycol) (PEG)] as solvent instead of traditional water to research their self-adhesiveness, durability, conductivity, and mechanical properties. PAANa hydrogels exhibited higher self-adhesive properties and durability after alcohol content increased, and GLY/water hydrogels showed the best self-adhesive and stable properties. With more alcohols added, the weaker conductivity became, and EG/water hydrogels showed the highest conductivity. It was observed the long carbon chain length of alcohol could help improve the rheological properties of hydrogels. Thus, PEG/water hydrogels had the highest storage modulus, loss modulus, and consistency. The results demonstrated that the GLY/water binary solvent could provide good self-adhesiveness and durability, but EG/water and PEG/water showed better conductivity and mechanical properties, respectively. Therefore, our work may provide novel physical insights into the long-term usage of self-adhesive conductive hydrogels to practical requirements.
Composite proton exchange membranes produced using chitosan and kaolin solvent-free fluid
Authors: Huang Chun-Chun , Rwei Syang-Peng , Huang Yun-Shao , Shu Yao-Chi 
Published: January 2020

Abstract
In this study, composite membranes produced by combining both biopolymer chitosan (CS) and kaolin solvent-free fluid (kaolin-SF) were used as substitutes for the electrolyte membranes in direct-methanol fuel cells. To improve the interfacial morphologies between organic and inorganic substances, kaolin-SF was prepared using the ion exchange method. Subsequently, kaolin-SF of various doping proportions was mixed with CS crosslinked with sulfuric acid to produce thin membranes. The results of heat exhaustion and scanning electron microscope image analysis indicated that kaolin-SF was successfully doped into the CS polymer substrates, and this addition enhanced the thermal stability and mechanical properties of the CS polymer substrates. As long as the concentration of kaolin-SF was below 5 wt.%, the water absorption rate and proton conductivity of the CS/kaolin-SF composite membranes increased along with the kaolin-SF content. These results indicate that CS/kaolin-SF composite membranes are suitable for practical applications.
The Effects of Enforcement on Corporate Environmental Performance: The Role of Perceived Fairness
Authors: Earnhart Dietrich , Harrington Donna Ramirez , Glicksman Robert 
Published: January 2020

AbstractSeveral empirical studies explore the effects of regulatory enforcement on environmental behavior and performance. Within this literature, extremely little empirical research examines the role of fairness, which we interpret broadly to include multiple dimensions, e. g. similar treatment of similarly situated regulated entities. Our study empirically examines the effect of perceived enforcement fairness on the extent of compliance with wastewater limits imposed on chemical manufacturing facilities regulated under the Clean Water Act. Our study also explores the influence of perceived fairness on the effectiveness of enforcement efforts – government inspections and enforcement actions – at inducing better compliance. For our analysis, we use a subjective measure of the degree of “fair treatment” of regulated facilities by environmental regulators, as perceived by facilities and reported as survey responses. Results reveal that a more (perceived) fair enforcement approach raises compliance, but only under limited enforcement conditions; in most instances, perceived more fair enforcement lowers compliance. As important, results show that greater perceived fairness improves the effectiveness of federal inspections and informal enforcement, but undermines the effectiveness of state inspections and formal non-penalty enforcement.
A ESTRUTURA EDUCACIONAL COMO REFLEXO DA CULTURA BRASILEIRA
Authors: Santoro de Constantino Núncia Maria 
Published: January 2020

Inicialmente, defende-se a ideia de que o Brasil não possui ou possuiu um sistema educacional. No desenvolvimento, o trabalho pretende analisar características dessa estrutura educacional brasileira numa perspectiva histórico-cultural, isto é, destacando uma primeira fase, cujo caráter da educação é essencialmente religioso; uma segunda fase que se caracteriza pela ausência de qualquer sistema educacional, fase que corresponde à criação das aulas régias de inspiração iluminista; a fase que corresponde à permanência da corte portuguesa no Brasil, quando o imediatismo e a praticidade definem as prioridades educacionais; a fase relativa ao Império, quando o ensino particular expande-se, dada a escassez de empreendimentos oficiais; a fase republicana com suas tentativas de implantação de sistema educacional, tentativas expressas em sucessivas reformas de ensino e, por fim, transformações de correntes de conceitos da chamada “Escola Nova”. Como conclusão, o trabalho sintetiza problemas da educação brasileira como reflexo do processo histórico e cultural.
CONNAISSANCES DE L’HYPERTENSION ARTERIELLE ET DE SES COMPLICATIONS AU CENTRE HOSPITALIER DE SOAVINANDRIANA
Authors: Miandrisoa RM , Ramilitiana B , Rakotonoel RR , Rasamoelina W , Ravaoavy H , Ralamboson SA , Rabearivony N , Rakotoarimanana S 
Published: January 2020

Introduction : A Madagascar, on assiste actuellement à une nette augmentation de la prévalence de l'hypertension artérielle (HTA)et de ses complications. Le but de cette étudeétait d’évaluer le niveau de connaissances des patients hypertendus en matière d’HTA,de connaitre le terme HTA et ses complications ainsi que la valeur tensionnelle cible sous traitement avant l’éducation thérapeutique.
Méthodes : Nous avons mené une étude transversale et descriptive des patients hypertendus vus au centre hospitalier de Soavinandriana(CENHOSOA) du mois d’août 2015 à août 2016, soit 13 mois.
Résultats : Au final, 346 patients ont été sélectionnés avec un âge moyen de 57,19 11,47 ans. Parmi eux, 61,56 % étaient des femmes; 33,8 % étaient scolarisés; 61,16 % étaient pris en charge et 75,36 % étaient mariés. Dans notre série, 78,32 % des patients ont déclaré connaître le terme d’HTA, pourtant 32,47 % seulement ont répondu exactement aux valeurs de la définition de l’HTA. Sur les 87,54 % des patients informés par leur médecin sur l'HTA, seuls 33,5 % connaissaient la définition exacte. Les 66,76 % des patients surveillaient régulièrement leur HTA, et 53,8 % consultaient leur médecin en cas d’élévation de la pression artérielle.Conclusion : Notre étude montre qu'il existe de nombreuses informations manquantes sur l'HTA chez les patients hypertendus et que bon nombre d'entre eux ne suivaient pas les recommandations en matière de gestion de l’HTA.
Produtividade de feijoeiro-caupi cultivado com estirpes rizobianas e doses de fósforo
Authors: Santos Manoel Mota dos , Brito Valéria França , Silva Evaldo Morais da , Santos Mauro Gomes dos , Barros Hélio Bandeira , Lopes Marilia Barcelos Souza 
Published: January 2020

A fixação biológica de nitrogênio tem se mostrado indispensável para a sustentabilidade da agricultura brasileira, devido ao fornecimento de nitrogênio com baixo custo econômico para as culturas e redução no impacto ambiental. Diante do exposto, objetivou-se com o presente trabalho avaliar a eficiência de estirpes rizobianas e doses de fósforo, para maximizar o crescimento de duas cultivares de feijoeiro-caupi e fixação de azoto e obtenção de melhor desempenho agronômico. O delineamento experimental utilizado foi blocos casualizados, em esquema fatorial 3 x 6 (2 estirpes de rizóbio + 1 tratamento sem inoculação x 6 doses de fósforo), contendo 4 repetições. As doses consistiram de 0, 30, 60, 90, 120 e 150 kg ha-1 de P2O5. A adubação potássica foi realizada na semeadura, utilizando 60 kg ha-1 de K2O. O suprimento de água para a cultura foi realizado com irrigação e turno de rega de dois dias, com vazão aproximada de 5 mm. As características avaliadas foram: clorofila realizada aos 45 dias após a semeadura, biomassa seca da parte aérea (g), peso de cem sementes (g), nitrogênio total da parte aérea (dag kg ha-1) e produtividade (kg ha-1). De modo geral as duas estirpes testadas apresentaram capacidade para nodulação e fixação biológica de nitrogênio. A estirpe INPA 03-11B foi a mais indicada para a cv. BRS Sempre Verde e a BR 3299 a mais indicada para a cv. BRS Vinagre de feijoeiro-caupi. A dose de fósforo que condicionou a máxima eficiência agronômica em feijoeiro-caupi variou de 70 a 110 kg ha-1. Maior teor de nitrogênio para as duas cultivares de feijoeiro foi verificado com a utilização da estirpe BR 3299.
Ambientes na emergência e desenvolvimento de mudas de Tabebuia serratifolia (Vahl) G. Nichols
Authors: Sousa Hygor Gomes de Almeida , Duarte Victor Braga Rodrigues , Borges Athos Vinicios Souza , Souza Priscila Bezerra de 
Published: January 2020

Os diferentes níveis de sombreamento, assim como a qualidade e quantidade de luz podem influenciar o desenvolvimento e a formação de mudas de espécies florestais. Diante do exposto, objetivou-se com o presente trabalho avaliar diferentes tipos de sombreamento, visando obter mudas de Tabebuia serratifolia com maior qualidade e melhor produção, quando comparado ao tratamento a pleno sol. Os tratamentos utilizados foram: pleno sol, tela de sombreamento 50% do tipo polietileno preto, tela de sombreamento 50% do tipo polietileno preto + lã de pet, plástico transparente e lã de pet. As parcelas foram organizadas em delineamento inteiramente casualizado, com os tratamentos representados por ambientes, contendo 6 repetições, 8 parcelas e 144 sementes por tratamento. O parâmetro analisado até os 30 dias foi o percentual de emergência, aos 60 e 100 dias realizou-se a coleta da altura e diâmetro, enquanto biomassa seca das raízes, biomassa seca da parte aérea, biomassa seca total, relação biomassa seca das raízes/biomassa seca da parte aérea e índice de qualidade de Dickson avaliou-se com o fim do experimento. Para o percentual de emergência, diâmetro do colo, biomassa seca das raízes e biomassa seca total, não houve diferença significativa nos tratamentos estudados. O tempo de permanência nos ambientes interferiu na emergência e desenvolvimento da espécie Tabebuia serratifolia, onde, melhor ambiente foi aquele com menor intensidade luminosa, ou seja, sombreamento com plástico + lã de pet.
SUSTAINABILITY REPORT, OWNERSHIP TYPES, AND COST OF CAPITAL: EVIDENCE ON INVESTORS’ REACTION OF INDONESIAN LISTED COMPANIES
Authors: Arum Sari Raisya , Rossieta Hilda 
Published: January 2020

Purpose: This research aims to examine investors’ reactions to the Sustainability Report (SR) and the moderating effect of ownership types associated with stakeholders’ interdependence theory.
Methodology: This research uses purposive sampling method to choose the samples. The population of the samples is Indonesian listed companies that disclose sustainability reports from 2014 to 2016. This research uses secondary data using several data sources, such as the annual report, financial report, sustainability report, data stream database, and another secondary source.
Results: In general, empirical evidence indicate that investors appreciate sound SR performance by the tendency to give a discount on their investment; hence, they charge low Cost of Capital. Also, types of ownership do have a moderating effect on investors’ reaction, suggesting the existence of interdependent among stakeholders group.
Implications: This research captures investors' reactions by looking at the Cost of the Capital bear by the company as a proxy for investor reaction on the perceived risk associated with the sustainability issues. Moreover, this research converts the Cost of Capital as a continuous variable into a categorical variable of high and low.
GADGETS PLAYING BEHAVIOR OF STUDENTS IN INDONESIA
Authors: Noviya Andriyani Isnanita , Theria Wasim Alef , Zainuddin Mahli , M. Suud Fitriah 
Published: January 2020

Purpose of the study: This study aims to describe the behavior of playing gadgets on Budi Mulia Dua Junior High School students in Yogyakarta, Indonesia, find the score of gadget playing behavior on Budi Mulia Dua Junior High School students in Yogyakarta, Indonesia, and find the dominant factor of gadget playing behavior on Budi Mulia Dua Junior High School Yogyakarta, Indonesia.
Methodology: The method used in this study mix method research design with an exploratory mix method approach. The research subjects were students of Budi Mulia Dua Junior High School in Yogyakarta, Indonesia with a sample of 151 students, 7 teachers, 3 educational staff, and the head of Budi Mulia Dua Junior High School Yogyakarta, Indonesia. Research data were collected through observation, interview, questionnaire, and documentation.
Main Findings: The results of this study indicate that the gadgets playing behavior of students in Budi Mulia Dua Yogyakarta, Indonesia are included in the good category, which is in the range of scores between 379-492. The score of the gadgets playing behavior was 484.3.
Applications of this study: The students still have emotionally stable and controlled when using gadgets, have self-control over the use of gadgets, still pay attention to personal health in the use of gadgets, and discipline in the selection of gadget usage.
Novelty/Originality of this study: The novelty of this research confirms that the physical-motor condition in gadget playing behavior is the most dominant factor for creating good behavior for students in playing gadgets because the physical-motor becomes a reference in playing gadget behavior because physical-motor can reflect in a complex way how Student cognitive knowledge about gadgets. and their use, as well as how students are social-emotional when using gadgets.
Currículo narrativo y tecnologías en la formación docente: reflexiones teórico-conceptuales
Authors: Rodrigues Alessandra , Almeida Maria Elizabeth Bianconcini de 
Published: January 2020

Este ensayo teórico tiene como objetivo desarrollar una reflexión basada en una discusión teórica, acerca del concepto de currículo narrativo, acuñado por Ivor Goodson, pero aún poco explorado en profundidad, en lo concerniente a sus posibilidades de implementación y materialización en contextos educativos. El documento resulta de la profundización teórica realizada, a partir de la lectura crítico-reflexiva de las obras de Goodson dedicadas al concepto. El estudio reflexiona sobre el currículo narrativo y lo pone, conceptualmente, como un entre-lugar de producción de subjetividades y de conocimientos que forman los entremedios de la construcción curricular, pero que promueve la autoría y la emancipación de los sujetos por medio de una experiencia formadora, dialógica y dialéctica, de hacer-revelar narrativamente al mundo y al sujeto, a sí mismo y a los demás. También, se guía por preguntas orientadoras de reflexiones más profundas destinadas a reconocer y organizar las características de dos elementos esenciales a la integración, entre el currículo narrativo y las Tecnologías Digitales de Información y Comunicación [TDIC]: el aprendizaje narrativo y el capital narrativo, que son influenciados por el uso de las TDIC, como instrumentos de mediación del proceso constructivo de narrativas curriculares y de aprendizaje.
Sistema econômico internacional, ideologia e ensino superior brasileiro
Authors: Eisenbach Neto Filinto Jorge , Boneti Lindomar Wessler 
Published: January 2020

O presente artigo tem como objetivo desenvolver uma reflexão teórica acerca do papel do sistema econômico internacional e da ideologia na formação de um modelo do ensino superior no Brasil o atrelado às expectativas do mundo produtivo. Trata-se de um processo de “coisificação” institucional, transformando o ensino em produto de compra e venda, mesmo o público, com foco no treino para o fazer em detrimento do pensar. Metodologicamente utilizou-se do exame da institucionalidade educacional na LDB e na BNCC (Base nacional comum curricular), assim como referenciais do advento do modelo econômico internacional e da ideologia como estratégia de consolidação dos preceitos desse modelo. Conclui-se que o sistema econômico internacional, capitaneado pelo poder ideológico, constitui-se como um fator expressivo no aparecimento do “mercado de trabalho” como fim do processo de ensinar, especialmente no sistema de ensino superior. Porém, considera-se também que o processo da ¨coisificação” inerente ao sistema de ensino, não se encontra apenas naquilo que se pode entender como a finalidade do aprender e do ensinar, o “mercado de trabalho”, mas algo mais complexo se agrega neste processo como é o caso, sobretudo, no foco da meritocracia. Esta, a meritocracia se constitui no principal fator ideológico e da individualidade em detrimento da coletividade, do ato do fazer em detrimento do pensar.
O sistema de saúde na assistência estudantil da UFV
Authors: Gonçalves Liliane Honorato , Zuin Débora Carneiro 
Published: January 2020

Grande mudança foi observada no cenário educacional brasileiro após a expansão do Ensino Superior devido à instauração do sistema de cotas e de programas do governo tais como Reuni e Prouni. Dessa maneira houve mudança no perfil dos universitários brasileiros, aumentando muito o número daqueles que apresentam maior vulnerabilidade econômica e social. Assim, a Assistência Estudantil torna-se essencial para manutenção destes estudantes no Ensino Superior e para servir de suporte para que estes consigam concluir os seus estudos. Nessa pesquisa, buscou-se conhecer a percepção dos estudantes com este perfil em relação à assistência à saúde recebida em uma instituição federal de ensino (Universidade Federal de Viçosa/ UFV). Método: A técnica de coleta de dados foi o grupo focal realizado com os representantes da CME (Comissão de Moradias Estudantis) da UFV. Resultados: O objetivo foi alcançado pois este estudo permitiu perceber o conhecimento dos estudantes sobre a assistência estudantil em geral e em especial em relação à assistência à saúde, além de descobrir seus anseios e queixas. Conclusão: pode-se concluir que apesar de possuir uma abrangente Assistência Estudantil, a UFV não consegue atender todas as demandas existentes e que necessita de maior envolvimento com os estudantes para que ocorra maior participação destes, tanto nas decisões de ações quanto no planejamento da utilização de recursos.