Search Results (115)

Thermoset composites are a fast-growing waste stream that resists conventional reusing routes. Water is the principal ageing agent for epoxy-based thermoset materials that bind high-pressure piping, wind-turbine blades and aircraft skins, yet its action is deceptively complex: a rapid, reversible plasticisation is often followed by a far slower, irreversible chemical hydrolysis. Here we bridge that gap to access a reliable diagnosis inspection. Gravimetric immersion tests (from 8 to 93 °C, up to more than a year) and in situ FTIR spectroscopy were performed on four industrial DGEBA networks (two amine-cured matrices and two anhydride-cured matrices that hydrolyse). This 2 + 2 design isolates reversible from irreversible changes and exposes the individual signatures of diffusion, specific sorption and bond scission. The data are rationalised with a compact three-contribution model that superposes Fickian diffusion through nano-voids, adsorption site saturation through hydrogen bonds and a power-law hydrolysis term sharing global Arrhenius parameters. Since the parameters retain clear physical meaning, the approach can be extrapolated to service temperatures, providing a fast, transparent tool for lifetime prediction and for separating recoverable plasticisation from permanent chemical degradation in critical epoxy infrastructure. Full article

The transition from soft to hard law is reshaping global agri-food governance, particularly in relation to sustainability and corporate responsibility. This article analyzes this shift by examining two regulatory approaches: voluntary instruments such as the OECD-FAO Guidance for Responsible Agricultural Supply Chains and binding EU directives like the Corporate Sustainability Due Diligence Directive (CSDDD) and the Corporate Sustainability Reporting Directive (CSRD). Using a qualitative and interpretive methodology, the study combines a literature review and two case studies (Nicoverde and Lavazza) to explore the evolution from soft law to hard law and the synergies and analyze how these tools are applied in the Italian agri-food sector and how they can contribute to improving corporate sustainability performance. Findings show that soft law has paved the way for more rigorous regulation, but the increasing compliance burden poses challenges, especially for small and medium-sized enterprises (SMEs). These cases serve as virtuous examples to illustrate how soft and hard law interact in practice, offering concrete insights into the translation of general sustainability principles into corporate strategies. A hybrid governance framework—combining voluntary and binding tools—can foster sustainability if supported by coherent policies, stakeholder collaboration and adequate support mechanisms. The study offers practical insights for both companies and policymakers navigating the evolving legal scenario. Full article

Considerable research in recent years has examined the reuse of tailings; however, the lack of particle cohesion limits their application as construction materials. Therefore, this study assessed the stabilization of ultrafine iron ore tailings using an acrylic–styrene copolymer. Geotechnical characterization and polymer dosage, hydromechanical and microstructural tests were carried out, including unconfined compressive strength (UCS), permeability, scanning electron microscopy (SEM) and microtomography (μCT). The polymer effectively enhanced the mechanical behavior of the tailings, increasing the UCS from 49 kPa for untreated material to 2114 kPa and 3324 kPa for 30% and 40% polymer content, respectively. A robust power-law model (R² ≥ 0.90), based on the porosity/volumetric polymer index (η/Pᵢᵥ), was developed to predict strength, showing that mechanical gains can be achieved by increasing either polymer content or dry density, as supported by statistical analyses. Permeability remained on the order of 10⁻⁶ cm/s regardless of polymer addition, indicating that the polymer does not fill voids but instead acts as a binding agent, as confirmed by SEM and μCT analyses. Overall, this study establishes a technically feasible and sustainable approach for tailings management, highlighting the potential of polymer stabilization to turn environmentally challenging tailings into functional geotechnical materials. Full article

Several European courts have vested mitigation obligations with a hierarchically higher legal rank than ordinary state action. They construe these obligations from human rights in combination with international commitments and climate science. This phenomenon is here called ‘climate constitutionalisation’. In addition, we see an increasing escalation of climate cases to the European Court of Human Rights (ECtHR) and we now have the advisory opinion of the International Court of Justice (ICJ). Climate constitutionalisation in Europe is an incremental process of replication and reiteration. It can only be understood by studying the developing body of national case law in the context European and international law. Studying general emission reduction cases against states in Europe, this paper traces how non-enforceable legal norms, political commitments, and climate science are used to interpret binding and enforceable human rights norms. It reflects on the present and future consequences of the ECtHR’s decision in KlimaSeniorinnen and ICJ’s Advisory Opinion on climate obligations. The paper argues that Europe’s multilayered legal and judicial landscape strengthens climate constitutionalisation and herewith deepens the fault line between the judiciary and the elected institutions. Europe’s openness towards international law facilitates this process. The paper then offers tentative normative justifications for this process. Full article

Fire safety solutions for buildings in Slovakia are addressed by legislation and Slovak technical standards, which are not legally binding, but their wording is mandatory if they are referred to in an implementing regulation. Fire safety solutions for buildings in Slovakia are therefore limited mainly by legislation and technical standards. The use of fire models in fire safety solutions for buildings is common across the world, but these tools are not used in Slovakia. Their use is not prohibited by law, but it is always necessary to prove the applicability and correctness of the outputs. The paper deals with a case study of Slovak implementation of fire models when discussing the stand-off distances from fully fire-open areas. The Slovak case study addresses the fire safety solutions for buildings under the conditions of the Slovak Republic. To utilize the fire models in practice, the threshold conditions for the use of the selected FDS fire model needed to be established. This process is called a sensitivity analysis, and it is conducted based on the utilized simulation method. Based on the sensitivity analysis of FDS, the exact values of parameters can be determined, the use of which in the implementation of fire models in practice will allow accurate outputs and values of stand-off distances from fully fire-open areas in the conditions of the Slovak Republic to be obtained. Full article

In recent years, bifunctional ingredients extracted and utilized from waste by-products as raw materials have received significant attention in the food production process. Previous studies have found that bovine livers possess both antioxidant and emulsifying potential; therefore, enhancing these dual properties is a current research focus. In this study, three different types of polyphenols (epigallocatechin gallate [EGCG], gallic acid [GA] and tannin [TA]) provide a reference on how to achieve better complexation of polyphenols with bovine liver hydrolysates (BLHs). Based on the molecular weight results, it was shown that the bovine liver peptides bind to polyphenols to form complexes with higher molecular weights. Furthermore, the binding affinities among the three complexes were as follows: TA > EGCG > GA. The emulsions stabilized by the coupling compounds contained more homogeneous and dense droplets (optical microscopy). Both the antioxidant properties and the emulsifying activity of all complexes were superior to those of bovine liver hydrolysates (BLHs) (p < 0.05), confirming synergistic effects that either flavonoids, phenolic acids or tannins possess with bovine liver hydrolysates. This combination provides an effective strategy for developing novel foods with specific functions. Full article

Antimicrobial resistance (AMR) is a global health emergency. The growing levels of multidrug-resistant bacteria in companion animals represent a critical but under-recognized threat, as pets can act as reservoirs and vectors of resistant pathogens, and bacteria can spread between species. Despite living in close proximity to humans and sharing many of the same antibiotic classes, companion animals remain largely overlooked in the AMR control strategies. A major obstacle to combating AMR in Europe is the absence of a mandatory and uniform surveillance system. Without a standardized approach, data collection remains inconsistent, leading to knowledge gaps and hindering effective investigation and policymaking. Surveillance failures prevent a comprehensive understanding of resistance patterns, making it difficult to implement timely and evidence-based measures. Existing laws and regulations are insufficient to contain the growing threat of AMR. Current policies fail to enforce strict antimicrobial stewardship across all European countries and lack the necessary scope to address resistance effectively. Urgent action is required—Europe must implement stronger, harmonized surveillance systems, enforce stricter veterinary antimicrobial regulations, and develop more active and binding programs to curb resistance before it reaches an uncontrollable level. A One Health approach, recognizing the interconnectedness of human, animal, and environmental health, is essential. Full article

The shift to renewable energy has become a crucial element in addressing climate change. However, the legal systems that regulate this transition are still largely fragmented, and there is no single international legal framework that governs renewable energy comprehensively. This study investigates why such a unified global framework has not emerged despite various international efforts. It identifies several key challenges, such as the lack of binding commitments in global treaties, inconsistencies between national energy laws, and overlapping jurisdictions. By examining how national policies interact with major international agreements—namely the United Nations Framework Convention on Climate Change (UNFCCC), the Kyoto Protocol, and the Paris Agreement—this study uncovers structural shortcomings that hinder global legal coordination in the renewable energy field. Using a comparative legal approach, the paper highlights how the existing agreements fall short in offering enforceable and coherent standards. In doing so, it contributes to the ongoing discussion on legal fragmentation in environmental governance and suggests possible pathways for developing more integrated legal responses to renewable energy challenges. Full article

This research aimed to assay the impact of convective drying (CD) or infrared–convective (IR–CD) drying methods on the physical and techno-functional properties, FTIR spectra, and mathematical modeling of adsorption kinetics of black soldier fly larvae powders. By using convective drying, insect powder exhibited higher water content and water activity but lower hygroscopicity than powder dried with the infrared–convective method. After drying with the convective method, the powder exhibited a significantly lower loose and tapped bulk density and oil holding capacity (OHC). Furthermore, this powder was lighter and more yellow. The FTIR spectrum of the CD-dried powder showed lower absorption at key wavenumbers for the protein (1625 and 1350–1200 cm⁻¹), indicating lower denaturation and less ability to bind water and water vapor. The mathematical modeling of the water vapor adsorption kinetics of insect powders via the second Fick’s law for transient diffusion showed that this equation is suitable for adjusting the experimental data based on the high coefficient of determination (0.997–0.999) and the low root mean square (2.50–3.34%). This study revealed that the drying method influences insect powder properties, and the IR–CD method seems better in terms of obtaining better techno-functional properties. Full article

In order to solve the problems of high production cost and complex control of the inverted arch of an unsupported prestressed concrete composite slab, a flange truss high-ductility concrete composite slab floor is proposed to change the structure and pouring material to meet the requirements of no support during construction. The crack distribution and bending performance of the flange truss high-ductile concrete composite slab floor (CRHDCS) under different structures are clarified through the test and numerical analysis of four different rib plate structure floors. According to the analysis results, the calculation formulas of the cracking moment and short-term stiffness before cracking are modified, and the equivalent short-term stiffness formula of a single web member of the “V” truss to this kind of bottom plate is established. The results show that, unlike the short-term stiffness-change law of typical concrete composite slabs after cracking, the short-term stiffness of the designed bottom plate in this paper includes a short-term increase stage. The numerical simulation results are the same as the experimental ones; the maximum error is 10%. The maximum errors between the modified cracking moment and the short-term stiffness calculation formula are 6% and 8%, respectively. The influence rates of removing flange plate, truss-inverted binding, and adding rib plate on the cracking bending moment of foundation structure are −81.5%, 11.0%, and 22.2% respectively, and the influence rates on short-term stiffness are −87.6%, −1.5%, and 37.5% respectively. Full article

Peptides occupy a significant share of the pharmaceutical market and are among the top-200 selling drugs in the group of non-insulin drugs with analgesic, antibacterial and cardiovascular effects. The aim of this work is to develop a comprehensive analytical approach for quality control of novel synthetic peptides with non-narcotic types of analgesia and to provide docking simulations of dermorphin complex formation at the μ-opioid receptor (MOR) binding site. The materials and methods used include the pharmaceutical substance dermorphin tetrapeptide (DMTP) (tyrosyl-D-arginyl-phenylalanyl-glycinamide); Fourier transform infrared spectroscopy (FT-IR); static and dynamic laser light scattering (DLS, LALLS); scanning optical microscopy (SEM); X-ray fluorescence elements analysis; polarimetry for optical activity determining; and Spirotox method for sample biotesting. FT-IR-Spectra indicated specific amino acid chemical groups in the tetrapeptide sequence at 3300–2700 cm⁻¹, 1670 cm⁻¹. UV-absorption spectra of aqueous solutions of dermorphin tetrapeptide showed an absorption maximum at 275 nm, which is in good agreement with the presented spectrum of the bovine serum albumin (BSA) standard; the Pearson’s r of calibration line “A-C%” in 0.0125% to 0.0500% concentration range is 0.999; and the calculated specific extinction value $E_{1cm }^{1\%}$ = 18.38 ± 0.23. Of the 11 elements detected by X-rays, the elements copper (Cu) and cobalt (Co) have the highest X-ray intensity. Dispersion characteristics of dermorphin solutions were studied in the submicron and micron range. Conglomerates and druzes were detected by SEM, ranging in size from 2 µm to 100 µm. The specific optical activity index was calculated ${\left[\alpha \right]}_D^{20}$ = +36.18 ± 2.04 [°·mL·g⁻¹·dm⁻¹], according to Biot’s Law. Additionally, the orientation and conformation of the dermorphin molecule in the active binding site of the 8E0G receptor were predicted using molecular modeling, revealing that the contact area affects the key amino acid residue arginine (ARG 182). This comprehensive approach to analytical methods for qualitative and quantitative analysis of dermorphin tetrapeptide can be applied in pharmacies to enhance the understanding of its biological activity and aid in the development of regulatory documentation for a new, non-narcotic analgesic based on the dermorphin tetrapeptide. Full article

Black carbon, a short-lived climate forcer, has the dual impact of intensifying global warming and polluting the atmosphere. The further opening of Arctic shipping routes has resulted in a severe issue of black carbon emissions in this fragile region. The use of fuel, especially heavy fuel oil, in international shipping has generated enormous black carbon emissions, posing a serious threat to the climate in the Arctic and beyond. As the international community continues to pay attention to air pollution control and greenhouse gas emissions reduction, the need for effective global governance of black carbon emissions from Arctic shipping has become increasingly evident. This issue has emerged as a critical part of the broader effort to address ocean and climate governance through the lens of international law. Despite the efforts made by both the International Maritime Organization (IMO) and the Arctic Council (AC) to reduce black carbon emissions, the current international legal framework remains fragmented, with weak enforcement mechanisms and limited capacity for coordinated governance. The findings of this research underscore the importance of strengthening international legal instruments aimed at reducing black carbon emissions from Arctic shipping. In particular, there is a pressing need for the development of a dedicated international treaty with enhanced binding force to mitigate the ecological degradation in the Arctic, address global warming, and realize sustainable development goals. Full article

Phyllostachys edulis, an economically and ecologically significant bamboo species, has substantial research value in applications as a bamboo substitute for plastic and in forest carbon sequestration. However, frequent seasonal low-temperature events due to global climate change affect the growth, development, and productivity of P. edulis. Calcium signaling, serving as a versatile second messenger, is involved in various stress responses and nitrogen metabolism. In this study, we analyzed the calcium signaling dynamics and regulatory strategies in P. edulis under chilling stress. Differentially expressed genes (DEGs) from the CBF families, AMT families, NRT families, and Ca²⁺ sensor families, including CaM, CDPK, and CBL, were identified using transcriptomics. Additionally, we explored the law of Ca²⁺ flux and distribution in the roots of P. edulis under chilling stress and validated these findings by assessing the content or activity of Ca²⁺ sensor proteins and nitrogen transport proteins in the roots. The results indicated that the Ca²⁺ sensor families of CaM, CDPK, and CBL in P. edulis exhibited significant transcriptional changes under chilling stress. Notably, PH02Gene03957, PH02Gene42787, and PH02Gene19300 were significantly upregulated, while the expressions of PH02Gene08456, PH02Gene01209, and PH02Gene37879 were suppressed. In particular, the expression levels of the CBF family gene PH02Gene14168, a downstream target gene of the calcium channels, increased significantly. P. edulis exhibited an influx of Ca²⁺ at the root, accompanied by oscillating negative peaks under chilling stress. Spatially, the cytosolic calcium concentration ([Ca²⁺]_cyt) within the root cells increased. The CIPK family genes, interacting with Ca²⁺-CBL in downstream signaling pathways, showed significant differential expressions. In addition, the expressions of the NRT and AMT family genes changed correspondingly. Our study demonstrates that Ca²⁺ signaling is involved in the regulatory network of P. edulis under chilling stress. [Ca²⁺]_cyt fluctuations in the roots of P. edulis are induced by chilling stress, reflecting an influx of extracellular Ca²⁺. Upon binding to Ca²⁺, downstream target genes from the CBF family are activated. Within the Ca²⁺–CBL–CIPK signaling network, the CIPK family plays a crucial role in nitrogen metabolism pathways. Full article

While Tunisia endorsed the non-binding Global Compact for Migration (GCM), it has not yet ratified the binding International Convention on the Protection of the Rights of All Migrant Workers and Members of Their Families (ICRMW). In view of the overlap and convergence between both instruments and the fact that soft and hard law interact through cross-fertilisation processes, with the result that the boundaries between both become blurred, this article examines the potential of the GCM to reinforce the legal standing of the ICRMW in Tunisia and to pave the way for the attenuation of the obstacles to its ratification. Based on policy documents, interviews and secondary sources, we first conclude that the Compact has a considerable potential to promote the Convention as it created a political dialogue in which the Convention gained attention and visibility. Crucially, the implementation of Objective 6(a) GCM, calling for ratification of international labour instruments, appears to be the first step towards ratification as it resulted in a governmental decision to re-consider the ratification of the ICRMW. Secondly, on the basis of comparative legal analysis, we conclude that reading the ICRMW’s provisions through the lens of corresponding GCM Objectives attenuates the obstacles to ratification of the ICRMW. Our findings exemplify the well-established influential function of soft law as a catalyst supporting hard law by reinforcing its legal standing and by providing an impetus for its endorsement. Both analysis and conclusions are not only relevant for the Tunisian case but also for all other countries that endorsed the GCM but have yet to ratify the ICRMW. Full article

This research is motivated by the arbitrary nature of decision-making environments and the dynamic changes in decision patterns, particularly in international dispute resolution. These challenges introduce uncertainties that could be effectively managed by fuzzy logic, which provides a robust framework for evaluating alternatives under multiple criteria. In this study, an Interval-Valued Type-2 Fuzzy TOPSIS approach is proposed to assess various dispute resolution methods, including negotiation, good offices, mediation, international inquiry, conciliation, international organization, arbitration, and international jurisdiction. Common criteria are determined by examining academic literature and by interviewing relevant experts.—cost-efficiency, duration, impartiality, binding nature, and generalizability are considered essential in determining the best resolution method. The proposed method allows for a nuanced evaluation by incorporating both primary and secondary levels of uncertainty, enabling decision-makers to determine the best alternative solution more reliably. This method’s application extends not only to the international law field but also to industrial engineering, where complex, uncertain decision environments require similarly sophisticated multicriteria decision-making tools. By systematically analyzing these resolution methods, this study aims to provide a structured, quantifiable approach that enhances the decision-making process for both international legal practitioners and engineers working with uncertain and dynamic systems. The results of this study ultimately contribute to improved decision-making outcomes and greater efficiency in multidisciplinary problem solving. The assessments of experts in international law, international relations, and political science in their respective fields of expertise have been gathered to form a consensus. This study contributes to the literature as it is the pioneering application of fuzzy multicriteria decision-making techniques in the field of international law. The results of this study imply that the best option from the different decision-maker evaluations is international jurisdiction. Consequently, the utilization of multicriteria decision-making tools can result in more informed and effective decisions in complex and uncertain situations, which is advantageous to both legal practitioners and engineers. Additionally, incorporating different disciplines can help streamline the decision-making process and improve overall efficiency in solving multidisciplinary problems. Full article