bluuebunny/crossref_metadata_2025_split huggingface dataset:
Uma proposta de construção geométrica usando a linguagem Logo
Authors: Basniak Maria Ivete 
Published: December 2024

A proposta de atividade tem como objetivo motivar os alunos a aplicarem noções de matemática para a construção de um triângulo retângulo no computador, utilizando o software Super Logo. A atividade pode ser desenvolvida por alunos a partir do 9º ano do Ensino Fundamental, pois envolve conteúdos de trigonometria, ângulos internos do triângulo, ângulos complementares e suplementares, Teorema de Pitágoras. Este artigo apresenta uma possibilidade de desenvolvimento da atividade, pois outras podem surgir quando os alunos se engajarem para resolvê-la.
Educação Financeira Crítica: Novos Desafios na Formação Continuada de Professores
Authors: Rohrbek Chiarello Ana Paula , Santos Bernardi Luci dos 
Published: December 2024

O presente artigo discute a compreensão dos professores sobre possibilidades de promover uma Educação Financeira Crítica em sua prática de ensino. A pesquisa é de natureza qualitativa, inspirada na pesquisa-ação participante, realizada através de um processo de formação continuada com professores da educação infantil e anos iniciais, à luz dos pressupostos da Educação Matemática Crítica. O resultado é discutido em quatro dimensões: i) da proposição de atividades investigativas; ii) das dificuldades apresentadas pelos professores para estruturar um ambiente de aprendizagem; iii) do sentido atribuído ao papel sociopolítico da Educação Financeira; iv) das mudanças na ação pedagógica dos professores.
Uma leitura sobre a produção de conhecimentos matemáticos e financeiros por alunos do Ensino Médio no processo de tomada de decisão entre comprar ou alugar um imóvel
Authors: Junior Ivail Muniz , Jurkiewicz Samuel 
Published: December 2024

Esse artigo apresenta uma análise da produção e articulação de conhecimentos matemáticos e financeiros por estudantes de Ensino Médio em uma atividade envolvendo a decisão entre comprar ou alugar um imóvel. Utiliza-se o Modelo dos Campos Semânticos (LINS,1999) como base teórico-metodológica e como instrumento de leitura das produções de significados e conhecimentos dos sujeitos investigados, realizada a partir da produção de dados capturados por vídeos, adaptada da proposta de Powell (2004). Os resultados iniciais, obtidos a partir da análise das estratégias e discursos apresentados, mostraram uma dinâmica envolvendo uma rede de conhecimentos matemáticos articulados a aspectos financeiros, culturais e comportamentais.
A revista Ciência Hoje das Crianças em atividades de leitura e escrita em aulas de ciências: análise discursiva de uma metodologia de ensino em relação ao letramento científico
Authors: Galieta Tatiana , Chagas Ferreira Carolina Suisso das 
Published: December 2024

No artigo descrevemos e analisamos uma metodologia de ensino (“Roda do conhecimento”) que tem como ponto de partida a leitura de textos de divulgação científica. A partir do referencial teórico-metodológico da Análise de Discurso, investigamos as condições de produção e os processos de interpretação e autoria de textos por meio de entrevista com o professor e análise das produções escritas dos alunos. Os resultados apontam que os alunos não atingem o nível de repetição histórica que os constituiria como autores que mais reproduzem do que se posicionam frente aos textos lidos, o que compromete o letramento científico. Concluímos que a metodologia de ensino está limitada às fronteiras pré-estabelecidas do discurso científico escolar por estar inscrita em uma formação discursiva altamente estável, relacionada à autoridade do discurso científico, que é reforçada nas aulas de ciências por meio da restrição dos sentidos.
Evaluating the Dependability of Intuitive Processes in Moral Judgement
Authors: Huang Angela 
Published: December 2024

The reliability of moral intuition as a source of ethical knowledge has been a subject of significant philosophical debate, particularly regarding its limitations. These limitations arise primarily from two factors: disagreement and psychological influence. For example, the “Trolley Problem” presents a stark contrast between utilitarian and deontological perspectives, where the former advocates for the greater good for the greatest number, and the latter insists on adherence to moral rules, regardless of consequences. This fundamental divergence in moral intuitions challenges the universality of such judgements, as what one person may feel intuitively is morally right, another might deem wrong. Furthermore, psychological influences, including cognitive biases and emotional factors, play a significant role in shaping moral intuitions often leading to inconsistent or unreliable unethical judgements even when the scenarios are fundamentally similar. Factors such as personal experiences, societal influences, and unconscious biases can skew one’s intuitive response creating discrepancies in moral decision-making that undermine the reliability of intuition as a sole guide on ethics. While moral intuition may serve as an effective tool for understanding simple, self-evident ethical principles, it often proves inadequate when confronted with complex moral dilemmas that require nuanced deliberation. In contrast, moral reasoning—through its emphasis on critical evaluation, rational analysis, and systematic reflection—provides a more dependable approach to navigating such dilemmas.
Negative Workplace Gossips, Social Inclusion and Team Cohesion: Does Inclusive Leadership Reduces the Prevalence and Impact of Negative Workplace Gossip
Authors: Noor Ayesha 
Published: December 2024

Aim of the Study: This study analyzes the impact of negative workplace gossips on social inclusion and team cohesion with the moderating role of inclusive leadership among the employees of advertising agencies of Pakistan.
Methodology: Data was collected through self-reported questionnaire to ensure the confidentiality of the respondents. Questionnaires were distributed to 200 employees who are working in advertising agencies a total of 160 questionnaires were returned.
Findings: the result shows that negative workplace gossips affect the team cohesion with the mediation of social inclusion. The results also depicted that inclusive leadership plays the buffering role between the relationship of negative workplace gossips and social inclusion.
Conclusion: This study shows that that negative workplace gossips affect the social inclusion and team cohesion and strategies should be design at organizational level in order to minimize the negative workplace gossips and inclusive leadership plays a very vital role in minimizing negative workplace gossips.
Changes in Quality Components of Durum Wheat Genotypes under Temperature Stress and Sufficient Rainfall Conditions during the Growth Period
Authors: Eliş Seval , Yıldırım Mehmet 
Published: December 2024

A combination of genetic makeup and environmental factors determine the quality characteristics of durum wheat. Specifically, environmental stressors, such as extreme temperature fluctuations, can have a substantial impact on the productivity and quality of wheat crops. The effect of terminal temperature stress on yield and quality in durum wheat genotypes grown during 2019 and 2020 seasons was studied. These characteristics include thousand kernel weight, protein content, hectoliter weight, wet gluten content, Zeleny sedimentation value, and grain colour. The first year of the study was warmer than the second, resulting in decreased kernel weight, hectoliter weight, and gluten values, as well as increased protein content and Zeleny sedimentation values. This indicates that temperature stress leads to a higher protein content. The study also showed considerable variation in quality traits among genotypes, with certain genotypes demonstrating greater stability in specific quality traits. Genotype by environment interaction significantly affected grain weight, protein content, gluten content and Zeleny sedimentation. These data indicate that temperature stress plays an important role in determining the quality characteristics of durum wheat. Future studies should focus on mitigating the adverse effects of terminal temperature stress and improving the generation of genotypes with optimal quality traits.
Can concept maps attenuate auditory distraction when studying with music?
Authors: Barideaux Kenneth J. , Pavlik Philip I. 
Published: October 2021

AbstractThere is some research indicating that the presence of music adversely impacts academic task performance. While most of this research involves individuals reading text passages, few studies have explored how graphical representations contribute to the auditory distraction literature. The aim of our study was to investigate if concept maps, a graphical representation that depicts relations among concepts, and linear text differentially affect recall when they are studied in the presence of music. Participants studied a preconstructed concept map or text summary while listening to verbal or nonverbal music. Results indicated that participants who studied the concept map with verbal music recalled significantly more ideas than those who studied the text summary. This result was particularly robust for those with low to moderate prior knowledge in the domain being studied. These findings suggest that the novel structure of concept maps may induce greater concentration, which could provide protection against auditory distraction.
Cell Membrane Vesicles with Enriched CXCR4 Display Enhances Their Targeted Delivery as Drug Carriers to Inflammatory Sites
Authors: Wang Dandan , Jiang Shengjie , Zhang Fengyi , Ma Siqin , Heng Boon Chin , Wang Yuanyuan , Zhu Junxia , Xu Mingming , He Ying , Wei Yan , Zhang Xuehui , Xia Bin , Deng Xuliang 
Published: October 2021

AbstractCell membrane vesicles (CMVs) are composed of natural cell membranes which makes them effective drug delivery systems with low immunogenicity and prolonged circulation time. However, targeting delivery of CMVs in vivo for clinical applications is still a major challenge. In this study, CXCR4 recombinant lentivirus is transfected into MC‐3T3 cells and membrane CXCR4‐enriched MC‐3T3 cells are obtained. CMVs with enriched membrane CXCR4 display (CXCR4‐CMVs) are obtained from the transfected MC‐3T3 cells. Curcumin, an effective natural anti‐inflammatory compound, is encapsulated into CXCR4‐CMVs through physical entrapment (CXCR4/Cur‐CMVs), with the membrane integrity of CXCR4/Cur‐CMVs being well‐preserved. CXCR4/Cur‐CMVs induce enhanced M2 macrophage polarization, exhibit anti‐inflammatory effects, and significantly improve homing via the CXCR4/CXCL12 axis in vitro. Utilizing ulcerative colitis and apical periodontitis as inflammatory disease models, it is found that CXCR4/Cur‐CMVs are obviously aggregated within inflammatory areas after intravenous administration, which results in significant amelioration of ulcerative colitis and apical periodontitis. Therefore, this research may provide a feasible and innovative approach for fabricating an inflammatory site‐targeting delivery system, by engineering CMVs to increase membrane‐presenting CXCR4 receptor.
Electrochemical CO2 Reduction on Cu: Synthesis‐Controlled Structure Preference and Selectivity
Authors: Quan Weiwei , Lin Yingbin , Luo Yongjin , Huang Yiyin 
Published: October 2021

AbstractThe electrochemical CO2 reduction reaction (ECO2RR) on Cu catalysts affords high‐value‐added products and is therefore of great practical significance. The outcome and kinetics of ECO2RR remain insufficient, requiring essentially the optimized structure design for the employed Cu catalyst, and also the fine synthesis controls. Herein, synthesis‐controlled structure preferences and the modulation of intermediate's interactions are considered to provide synthesis‐related insights on the design of Cu catalysts for selective ECO2RR. First, the origin of ECO2RR intermediate‐dominated selectivity is described. Advanced structural engineering approaches, involving alloy/compound formation, doping/defect introduction, and the use of specific crystal facets/amorphization, heterostructures, single‐atom catalysts, surface modification, and nano‐/microstructures, are then reviewed. In particular, these structural engineering approaches are discussed in association with diversified synthesis controls, and the modulation of intermediate generation, adsorption, reaction, and additional effects. The results pertaining to synthetic methodology‐controlled structural preferences and the correspondingly motivated selectivity are further summarized. Finally, the current opportunities and challenges of Cu catalyst fabrication for highly selective ECO2RR are discussed.
Consistent Interpretation of Electrical and Optical Transients in Halide Perovskite Layers and Solar Cells
Authors: Krückemeier Lisa , Liu Zhifa , Krogmeier Benedikt , Rau Uwe , Kirchartz Thomas 
Published: October 2021

AbstractTransient photoluminescence (TPL) and transient photovoltage (TPV) measurements are important and frequently applied methods to study recombination dynamics and charge‐carrier lifetimes in the field of halide‐perovskite photovoltaics. However, large‐signal TPL and small‐signal TPV decay times often correlate poorly and differ by orders of magnitude. In order to generate a quantitative understanding of the differences and similarities between the two methods, the impact of sample type (film vs device), large‐ versus small‐signal analysis, and differences in detection mode (voltage vs. luminescence) are explained using analytical and numerical models compared with experimental data. The main solution to achieving a consistent framework that describes both methods is the calculation of a voltage or carrier density dependent decay time that can be interpreted in terms of a capacitive region, a region dominated by defect‐assisted recombination and a region that is dominated by higher order recombination (radiative and Auger). It is experimentally shown that in the efficient methylammonium lead‐iodide solar cells, effective monomolecular lifetimes ≈2 µs can be consistently measured with TPL and TPV. Furthermore, the shape of the decay time versus voltage or carrier density follows predictions derived from implicit and explicit solutions to differential equations.
Continuous Porous Aromatic Framework Membranes with Modifiable Sites for Optimized Gas Separation
Authors: Ma Yue , Cui Fengchao , Rong Huazhen , Song Jian , Jing Xiaofei , Tian Yuyang , Zhu Guangshan 
Published: October 2021

AbstractContinuous microporous membranes are widely studied for gas separation, due to their low energy premium and strong molecular specificity. Porous aromatic frameworks (PAFs) with their exceptional stability and structural flexibility are suited to a wide range of separations. Main‐stream PAF‐based membranes are usually prepared with polymeric matrices, but their discrete entities and boundary defects weaken their selectivity and permeability. The synthesis of continuous PAF membranes is still a major challenge because PAFs are insoluble. Herein, we successfully synthesized a continuous PAF membrane for gas separation. Both pore size and chemistry of the PAF membrane were modified by ion‐exchange, resulting in good selectivity and permeance for the gas mixtures H2/N2 and CO2/N2. The membrane with Br− as a counter ion in the framework exhibited a H2/N2 selectivity of 72.7 with a H2 permeance of 51844 gas permeation units (GPU). When the counter ions were replaced by BF4−, the membrane showed a CO2 permeance of 23058 GPU, and an optimized CO2/N2 selectivity of 60.0. Our results show that continuous PAF membranes with modifiable pores are promising for various gas separation situations.
Nanoparticles capable of managing hypoglycemia and preventing myocardial ischemia‐reperfusion injury
Authors: Li Xiaofeng , Bian Ligong , Zhao Xi , He Dan , Liu Guohua , Tang Di Wei , Li Zhiqin , Wu Junzi 
Published: October 2021

AbstractDiabetes, and its complications, is a major threat to human health. In this research, we successfully synthesized a new type of glucose‐responsive poly(3‐acrylamidophenylboronic acid‐co‐pterostilbene) (p(AAPBA‐co‐PTE) nanoparticle. The nanoparticles are round in shape with a size between 150 and 200 nm. Insulin‐loaded p(AAPBA‐co‐PTE) nanoparticles can self‐adjust according to the changes in glucose concentration in vitro to achieve effective and sustained levels of insulin. P(AAPBA‐co‐PTE) nanoparticles have good stability, and the drug loading of insulin‐loaded p(AAPBA‐co‐PTE) nanoparticles is up to 16.7%, the encapsulation efficiency is up to 82.4% and the release rate of pterostilbene in vitro is up to 81%. The p(AAPBA‐co‐PTE) nanoparticles have low toxicity toward cells, and can effectively reduce blood sugar within 24 h. After 14 days of treatment, an animal model of myocardial ischemia‐reperfusion injury (MI/RI) was established. After treatment with the insulin‐loaded p(AAPBA‐co‐PTE) nanoparticles, the rat heart function was significantly improved, and the levels of inflammatory factors were significantly reduced. P(AAPBA‐co‐PTE) nanoparticles were therefore successfully synthesized, and had good performance. P(AAPBA‐co‐PTE) nanoparticles appear to have the effect of reducing blood sugar and preventing MI/RI, and may be valuable for the development of treatments for MI/RI.
A biogas‐steam combined cycle for sustainable development of industrial‐scale water‐power hybrid microgrids: design and optimal scheduling
Authors: Jabari Farkhondeh , Arasteh Hamidreza , Sheikhi‐Fini Alireza , Ghaebi Hadi , Bannae‐Sharifian Mohammad‐Bagher , Mohammadi‐Ivatloo Behnam , Mohammadpourfard Mousa 
Published: October 2021

AbstractLack of sufficient pure water resources and energy crises are two important issues in summer, especially for remote communities located in tropical zones. Electricity is used for seawater desalination, and power generation units need freshwater for energy extraction, conversion, transportation, and distribution. The design and operation of renewable energy sources based on water‐energy hybrid grids therefore reduce on‐peak electricity demand, potable water scarcity, and pollutant emissions, significantly. This paper proposes a combined cycle for water and power production and investigates its performance under different ambient air temperatures and various load levels. First, biogas is employed to fuel a gas turbine electricity generation process. Then, its waste heat is utilized in a steam turbine heat‐and‐power extraction cycle. This heating flow is used in a water‐heater air‐cooler desalination process. A non‐linear optimization problem is developed under engineering equation solver (EES) and generalized algebraic modeling system (GAMS) with the aim of finding the near‐optimal operating points of the proposed industrial‐scale co‐generation system, considering its technical constraints and changes of fresh water and power demands during a 24 h operating period. This stand‐alone microgrid is able to produce 2.8 L of drinking water per second and 5.8 MW of electricity for large industrial sectors with a minimum efficiency of 37%. Replacing natural gas with biofuels in the water‐power nexus contributes most to emissions mitigation, peak electrical‐demand reduction, and sustainable water treatment. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd
Systematic workflow for studying domain contributions of bispecific antibodies to selectivity in multimodal chromatography
Authors: Parasnavis Siddharth S. , Niu Ben , Aspelund Matthew , Chung Wai K. , Snyder Mark , Cramer Steven M. 
Published: October 2021

AbstractIn this article, a systematic workflow was formulated and implemented to understand selectivity differences and preferred binding patches for bispecific monoclonal antibodies (mAbs) and their parental mAbs on three multimodal cation exchange resin systems. This workflow incorporates chromatographic screening of the parent mAbs and their fragments at various pH followed by surface property mapping and protein footprinting using covalent labeling followed by liquid chromatography–mass spectrometry analysis. The chromatography screens on multimodal resins with the intact mAbs indicated enhanced selectivity as compared to single‐mode interaction systems. While the bispecific antibody (bsAb) eluted between the two parental mAbs on most of the resins, the retention of the bispecific transitioned from co‐eluting with one parental mAb to the other parental mAb on Capto MMC. To investigate the contribution of different domains, mAb fragments were evaluated and the results indicated that the interactions were likely dominated by the Fab domain at higher pH. Protein surface property maps were then employed to hypothesize the potential preferred binding patches in the solvent‐exposed regions of the parental Fabs. Finally, protein footprinting was carried out with the parental mAbs and the bsAb in the bound and unbound states at pH 7.5 to identify the preferred binding patches. Results with the intact mAb analysis supported the hypothesis that interactions with the resins were primarily driven by the residues in the Fab fragments and not the Fc. Furthermore, peptide mapping data indicated that the light chain may be playing a more important role in the higher binding of Parent A as compared with Parent B in these resin systems. Finally, results with the bsAb indicated that both halves of the molecule contributed to binding with the resins, albeit with subtle differences as compared to the parental mAbs. The workflow presented in this paper lays the foundation to systematically study the chromatographic selectivity of large multidomain molecules which can provide insights into improved biomanufacturability and expedited downstream bioprocess development.
Acid‐Tolerant Sulfate Tetrahedral Cages from Anion‐Coordination‐Driven Assembly
Authors: Zhang Wenyao , Feng Yang , Li Boyang , Yang Dong , Hou Lekai , Zhao Wei , Yang Xiao‐Juan , Wu Biao 
Published: October 2021

AbstractSupramolecular cages have been constructed by anion‐coordination‐driven assembly (ACDA) in recent years and have shown unique host‐guest interactions. However, most of the reported cages are made of the phosphate ion (PO43−); other anions have rarely been explored. Here we show for the first time that the sulfate ion (SO42−) is also able to form the A4L4 tetrahedral motif with tris‐bis(urea) ligands, but this is dependent on the stoichiometry of the sulfate ion (in solution). Notably, the sulfate cages display enhanced resistance for both Brønsted (pH as low as 4.3 in acetone containing 15 % water) and Lewis acids (metal complexes) compared to the corresponding phosphate cages, and thus could find applications where an acidic (proton or metals) environment is required.