In this paper we study an overdetermined problem which is directly related to the well known torsion problem studied by J. Serrin. A perturbed version of the latter is tackled by using asymptotic series as well as tools borrowed from the celebrated Nekhoroshev Theorem. In a similar fashion to this class of results, we establish the existence of infinitely many approximants for the perturbed problem’s solution, whose approximation error is so small which can be regarded as negligible for practical applications. The approach is fully constructive and this feature is demonstrated via an example in a final section.
Disinterestedness is often treated as the hallmark of aesthetic experience, but this paper argues for a narrower claim: disinterestedness, understood as indifference to existence, individuates an important kind of aesthetic experience rather than the genus. Building on a Waltonian taxonomy of representational arts, I argue that the familiar fiction/nonfiction divide is incomplete. Nonfictions prescribe belief and thereby implicate interest in actual existence; fictions prescribe imagining and implicate interest in fictional existence. A third category is needed, that of disfictions, which prescribe the attitude of entertaining a representational content without any commitment to the question of which world, if any, contains what is represented. Their distinctive mode of engagement releases audiences from questions about actuality versus fictionality and foregrounds the work's appearance, configuration, and history of making. I then argue that the disinterested attitude characteristic of disfictions modulates affect in a distinctive way: emotions such as fear can be savored without being tethered to welfare-directed appraisal in any determinate world. Finally, I sketch how this attitude can be extended beyond representational art via “disfictionalisation”: the deliberate detachment of perceptual content from belief in nonrepresentational arts and even in ordinary objects and nature.
Aim Foundation species sustain biodiversity by providing habitat, resources, and protection from environmental stress. However, their influence on environmental severity and variability and their role in shaping diversity across spatial scales remain poorly understood. We conducted a large-scale study to assess how environmental conditions and community diversity vary between areas with and without canopy-forming macroalgae across local to regional spatial scales.Location Latitudinal range from 28 degrees 34 ' N to 54 degrees 11 ' N, encompassing both the Northeast Atlantic and Western Mediterranean regions.Time Period 2019-2020.Major Taxa Studied Marine macroalgae and benthic invertebrates.Methods Using a standardised nested sampling design across 13 sites in two marine regions (the Northeast Atlantic and Western Mediterranean) we compared the intensity and variability of temperature and light intensity, as well as community alpha- and beta-diversity, between intertidal rocky areas with and without canopy-forming macroalgae. Data were analysed by means of linear mixed-effects models.Results There were regional differences in variations of environmental conditions between habitats: NE Atlantic macroalgal canopies were characterised by lower environmental extremes and variability-especially in summer-than open rock areas, whereas differences between habitats were small in the W Mediterranean. Likewise, differences in alpha- and beta-diversity between habitats were region-specific and scale-dependent: in the NE Atlantic, alpha-diversity was higher in the presence of canopies than in open rock areas from local to regional scales, while beta-diversity decreased in canopy stands with increasing spatial scale. In the W Mediterranean, alpha-diversity was higher under canopies than on open rock at the regional scale, whereas beta-diversity was higher under canopies at small to intermediate scales.Main Conclusions Our results support the view that key environmental conditions and biodiversity on intertidal rocky shores differ between areas characterised by the presence or absence of canopy-forming macroalgae acting as foundation species, across a hierarchy of spatial scales.
The role of the support for Dual Function Materials (DFMs) is critical in the overall activity of the materials, affecting both storage and conversion functions. Through microreactor and FT-IR investigation, the utilization of SiO2 as support for the integrated CO2 capture resulted in low CO2 uptakes when using Ru- and Na- based DFMs, due to the weak protonic acidic nature of the support as well as its non-interacting nature. These properties cause the agglomeration of the Na-based sorbent, increasing its bulk basicity and lowering its effectively available amounts when higher Na loadings materials are prepared. On the other hand, higher efficiency of integrated CO2 capture and conversion has been obtained by using segregated configurations, that is, physical mixtures of reducing/storage formulations, that in our conditions can overcome detrimental storage material-support interactions.
Surgical pathology represents a resource-intensive component of healthcare systems due to continuous operation, energy-demanding infrastructure, extensive use of hazardous chemicals, and high volumes of single-use consumables. Despite this, surgical pathology has historically received limited attention within sustainability research and policy frameworks. This narrative review examines the concept of green pathology, defined as the practice of pathology in a manner that minimizes environmental impact while preserving diagnostic accuracy, patient safety, and regulatory compliance. We first contextualized green pathology within the broader sustainability movement in healthcare and laboratory medicine and then proceeded to summarize transferable lessons from sustainability initiatives implemented in non-pathology laboratories and related medical disciplines, including energy management, green chemistry, waste reduction, digital transformation, and governance frameworks. Subsequently, we focused on surgical pathology-specific opportunities for sustainability across the pre-analytical, analytical, and post-analytical phases. Key interventions include optimization of energy consumption and laboratory infrastructure, chemical stewardship in histopathology, solvent recovery and reduction of hazardous waste, rational use of consumables, diagnostic stewardship, and the responsible adoption of ancillary techniques and digital pathology. Within this framework, education, workforce engagement, and Environmental Management Systems emerge as critical enablers for sustained change. Our overall aim is to present green pathology as a natural extension of pathology’s commitment to quality, safety, and long-term healthcare sustainability rather than as an optional environmental initiative.
