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The global transition to a circular economy calls for research and development on technologies facilitating sustainable resource recovery from wastes and by-products. Metal-bearing materials, including electronic wastes, tailings, and metallurgical by-products, are increasingly viewed as valuable resources, with some possessing comparable or superior quality to natural ores. Bioleaching, an eco-friendly and cost-effective alternative to conventional hydrometallurgical and pyrometallurgical methods, uses microorganisms and their metabolites to extract metals from unwanted metal-bearing materials. The performance of bioleaching is influenced by pH, solid concentration, energy source, agitation rate, irrigation rate, aeration rate, and inoculum concentration. Optimizing these parameter... |
In B2B context, this study focuses on analysing the loyalty formation process from a set of antecedent multidimensional variables—sustainable practices and logistics value—and the moderating effect of type of customer in maritime transport from the user’s perspective. Based on a sample of 105 importing companies and freight forwarders in Panama, a structural equation model was estimated to test the research hypotheses. The results show the significant influences of sustainable practices on value and value on loyalty. The significant mediating effect of value in the relationship between sustainable practices and loyalty is also verified. It indicates the benefits of the presence of perceived logistics value in B2B relationships since it reinforces the intensity of the links between s... |
In the Anthropocene, humans are drastically impacting the Earth system. Though the numbers are disputed, millions of climate refugees might soon appear worldwide due to, for example, rising sea levels. To better tackle these intertwined ecological and migrational crises, I expand on Seyla Benhabib’s theoretical legacy by discerning within it a multidimensional framework containing mutually intersecting moral, legal, and political dimensions. Within this framework, I argue, Benhabib approaches the issue of climate refugees from three different yet supplementary discourses. From her engagement with discourses on cosmopolitanism and global justice, she endorses reforming the Refugee Convention to include climate refugees. |
During the twentieth century, the development of semiotics and philosophy of language had a great influence on the investigation of normative phenomena, particularly within the philosophy of law: the analysis of normative language became the prevalent methodological approach among many legal philosophers, and the science of law was frequently understood as an analysis of the object language of law. This approach led to the development of a linguistic ontology of the normative and to a semiotic theory of the validity of norms, in which norms are conceived of as linguistic entities, and their validity is accordingly conceived of as a predicate of normative sentences. However, the resort to a semiotic approach for the investigation of normative phenomena does not necessarily imply the ... |
This article probes the usefulness of the notion of basic level categorisation for legal theory. Basic level categorisation is the central part of the vertical dimension of Eleanor Rosch’s prototype theory. It addresses the question about the various levels of abstraction at which humans can categorise the world. Extensive anthropological, psychological and linguistic research has proven that there is a preferable level of abstraction, namely the basic level, at which primary categorical cuts of the perceived world are made. Three areas of legal theory are identified when applying these findings. The first is the area of visualisation of legal rules. The notion of basic level categories addresses some of the known problems of discrepancies between the visualisation of a rule and its... |
The proposal for the Artificial Intelligence Act is the first comprehensive attempt to legally regulate AI. Not merely because of this pioneering role, the draft has been the subject of controversial debates about whether it uses the right regulatory technique, regarding its scope of application and whether it has sufficient protective effect. Moreover, systematic questions arise as to how the regulation of constantly evolving, dynamic technologies can succeed using the means of the law. The choice of the designation as Artificial Intelligence Act leads to legal-theoretical questions of concept formation as a legal method and legislative technique. This article examines the difficulties of regulating the concept of AI using the scope of the Artificial Intelligence Act as an example.... |
Women living with obstetric fistula-induced incontinence (OFII) have heightened need for water, sanitation and hygiene (WASH) services because they experience involuntary leaking of urine, feces, or both. In humanitarian settings where access to WASH services is notably limited, research and innovation relating to OFII and WASH programming has not been granted the requisite attention, relative to menstrual hygiene management. The paper is intended to bring to the attention of humanitarian researchers and practitioners the research needs of women living with OFII. Three thematic areas that have the propensity to arouse interest in this neglected topical issue and help to set the stage for research and actions are discussed. These are the prevalence of OFII, prevention of OFII, and WA... |
Traditional fertilizers are highly inefficient, with a major loss of nutrients and associated pollution. Alternatively, biochar loaded with phosphorous is a sustainable fertilizer that improves soil structure, stores carbon in soils, and provides plant nutrients in the long run, yet most biochars are not optimal because mechanisms ruling biochar properties are poorly known. This issue can be solved by recent developments in machine learning and computational chemistry. Here we review phosphorus-loaded biochar with emphasis on computational chemistry, machine learning, organic acids, drawbacks of classical fertilizers, biochar production, phosphorus loading, and mechanisms of phosphorous release. Modeling techniques allow for deciphering the influence of individual variables on bioch... |
Bisphenol A (BPA), a common plastic additive, has been demonstrated mechanistically to be a potential endocrine disruptor and to affect a variety of body functions in organisms. Although previous research has shown that BPA is toxic to aquatic organisms, the mechanism of neurotoxic effects in marine bivalves remains unknown. The current study aimed to elucidate the neurotoxic effects of BPA when administered at different concentrations (0.25, 1, 2, and 5 µg/L) for twenty-eight days in the ganglia of a bivalve model, the Mediterranean mussel (Lithophaga lithophaga), which is an ecologically and economically important human food source of bivalve species in the Mediterranean Sea. |
This research aimed to evaluate the efficiency of eucalyptus (E) and bamboo (B) residual biomass biochars as filter materials for drinking water treatment. The efficiencies of these two biochars in the rapid filtration process were evaluated using water (raw, flocculated and settled) at the rate of 120 m3/m2/d. Finding that bamboo biochar manufactured under a slow pyrolysis process "b" (Bb) had the best performance. Subsequently, Bb was evaluated with three different granulometries, and it was found that the effective size with the best performance was the finest (0.6–1.18 mm). |
