While it is generally agreed that teachers can shape student learning outcomes, there remains considerable debate on how national policies and training programmes can best support teacher education to address sustainable development challenges. This study aimed to develop a teaching readiness model with a focus on education for sustainable development. Therefore, the research investigated pre-service teachers’ readiness for fostering education for sustainable development by applying its principles to teaching and learning activities. Pre-service teachers in science, technology, engineering, and mathematics responded to a survey regarding their perception of the readiness for designing, conducting, assessing, and engaging in teaching and learning experiences underpinning sustainable development. The results suggest professional knowledge and practice, professional engagement, and self-management could be considered central dimensions of teachers’ job readiness, each of them encompassing a set of components or vectors. Moreover, professional knowledge has a strong and positive influence on teaching practice and professional engagement. In regard to professional knowledge, the ability to conduct didactic transposition is the most influential component. The most significant vectors of the professional practice dimension were found to be the ability to design effective evaluation tools and interpret learning outcomes. The research also revealed weak areas of teacher training: the ability to manage students’ disruptive behaviors, to customize learning and to self-regulate teaching emotions.

This paper focuses on the separation of Cr(III)_aq by ion and precipitate flotation using a multipolar collector, caffeic acid. The optimum separation parameters were established and were verified on real wastewater samples. The complexation function of CA with Cr(III) ions was studied. The obtained results suggested that, at pH≅6.0 and [CA]:[Cr(III)] = 1.25:1 molar ratio, a chelate compound with the involvement of phenolic hydroxyl groups, Na[Cr(H₂O)₃(OH)CA], most likely is formed, and at pH≅7.5 and [CA]:[Cr(III)] = 0.01:1 molar ratio, a mixture of Cr(III) hydroxo aqua species and caffeate is formed. The high separation efficiencies (R > 98%) support the possibility of using CA as collector reagent.

As e-Service-Learning emerges as a promising tool to foster collaboration and solidarity in Higher Education, there's a pressing need to delve deeper into the factors underlying its efficacy. This paper presents a comprehensive framework of e-Service-Learning design principles and subjects it to empirical validation. Derived from a systematic literature review, the framework's structure was further consolidated through co-design sessions and validated through focus groups involving students, higher education professionals and community partners. Insights from these experts not only reinforce but also refine the initial framework, setting the groundwork for future e-Service-Learning endeavors in higher education. An analysis of the collated data culminated in a framework characterized by four distinct structural elements: three foundational pillars, four sets of design principles, three overarching goals, and a pivotal role of technology as an enhancer of learning. Both the pillars and the design principles are elaborated upon in detail. This study's outcomes hold potential to shape pedagogical strategies in higher education, ultimately driving a more empathetic and contextually relevant approach to learning.

Performance-based research policies and programmes have fundamentally altered both organisational and individual behaviours and expectations, putting immense pressure on researchers. The soundness of research, originality, valorisation potential, and societal and economic impacts are highly valued and expected characteristics of research. Yet, our understanding of the effects of various systemic and organisational factors on research performance is limited. In an exploratory, single-country case, this paper aimed to develop and examine different models of research performance as perceived by researchers themselves using a large cross-disciplinary sample of 553 researchers from 72 public research organisations in Romania. A pre-tested questionnaire was self-administered online, comprising seven scales: (1) recruitment and selection, (2) research recognition and value, (3) participation in research projects and teams, (4) work incentives, (5) job payment and salary, (6) career development opportunities, and (7) leadership effectiveness. Maximum likelihood and Bayesian estimators were used to test three structural models: (M1) mono-factor; (M2) intercorrelated dimensions, and (M3) the dimensions are indicators of a general construct. Additionally, a path analysis was carried out to study the relationships among the dimensions. We found that M2 and M3 fit the empirical data better. The results showed that career development programmes and opportunities gain centrality in achieving research performance by directly influencing participation and research projects and teams and mediating the effect of job payment. Revealingly, powerful work incentives within research organisations are international mobilities or appreciation awards. When informing evidence-based policies, the models we propose could serve the goal of improving research performance through talent development as the main proxy.

This paper presents the results of investigations on the kinetic of Brilliant Blue FCF (BB) discoloration reactions in aqueous solutions with different ozone concentrations and pH conditions. Kinetic studies involve knowledge of the structure and properties of the dye and ozone, as well as the experimental conditions. In general, scientists admit that the predominant oxidation pathway is direct (by free oxygen atoms) or indirect (by free hydroxyl radicals), it will depend on influencing factors such as: the physicochemical properties of the dye, the pH of the aqueous solution, ozone concentration, reaction time and the contact mode with/without stirring. In the experimental research, two pathways were chosen following CBB = f(t): 1. constant dye concentration and different ozone concentration on the concentration range (100 - 250 mg/L) at three pH media (acidic, neutral and basic) with and without stirring; 2. Constant concentration of ozone and different dye in the range of concentrations (2.5 - 10 mg/L) under the conditions of point 1. With obtained experimental data the curves CBB = f(t) were drawn and were processed by the integral method of classical kinetic based on first and second order equations. Unfortunately, this simple procedure this not yield any minim full results and any pH level. The rate constants been negative and/or the reaction order been dependent on initial conditions. Due to its structure, the BB dye has several chromophore groups, thus multiple attack centers, resulting in more oxidation by-products, which is why the 1H - NMR spectrum of BB discoloration with ozone was recorded.

This paper presents the results of investigations on the kinetic modeling of Brilliant Blue FCF (BB) discoloration reactions in aqueous solutions with different ozone concentrations and pH conditions. Kinetic studies involve knowledge of the structure and properties of dye and ozone, as well as of the experimental conditions. In general, scientists admit that the predominant oxidation pathway is direct (by free oxygen atoms) or indirect (by free hydroxyl radicals); this will depend on influencing factors such as the physicochemical properties of the dye, the pH of the aqueous solution, ozone concentration, reaction time, and the contact mode with/without stirring. In this experimental research, two pathways were chosen following C_BB = f(t)—1. a constant dye concentration and different ozone concentrations, in the concentration range of 100–250 mg/L, in three pH media (acidic, neutral, and basic), with and without stirring; 2. a constant concentration of ozone and different dyes in the concentration range of 2.5–10 mg/L, under the conditions of point 1. With the obtained experimental data, the curves C_BB = f(t) were drawn and processed according to the integral method of classical kinetics, based on first- and second-order equations. Unfortunately, this simple procedure did not give any results for the pH values studied. The rate constants were negative, and/or the reaction order depended on the initial conditions. Due to its structure, the BB dye has several chromophore groups, and thus multiple attack centers, resulting in several oxidation by-products, which is why the ¹H-NMR spectrum was recorded for the discoloration of BB with ozone. Since the stoichiometry of the overall oxidation reaction, as well as the relationship between the rate constant and the reaction conditions mentioned above, is not known, a kinetic model based on mass transfer coupled with a chain reaction in the bulk liquid phase was proposed and successfully tested at pH = 7. This research approach also involves the consolidation of the theoretical bases of the ozonation process through the kinetic study carried out, as well as the proposal of a kinetic model. These systematics lead to results that are applicable to other aqueous systems that are impure with dyes, allowing for generalizations and the development of the field, ensuring the sustainability of the research.