Sheep wool waste, an abundant keratin-rich residue rarely used for biochar production, was pyrolyzed at 400-900 degrees C and activated with K2CO3 via two methods to generate adsorbents for methylene blue (MB) and Cu (II) removal from water. Method 2, using BC-400 activated at 900 degrees C, produced AC-900M2 with exceptional N2-BET surface area of 2845 m2/g, pHpzc8.2, 90 wt% fixed carbon and 0.8 wt% nitrogen. This material excelled in MB adsorption, achieving 99% removal and qe = 400 mg/g at 200 mg/L and pH 7, with equilibrium in 4 h well described by a pseudo-second-order (PSO) rate model (k2 = 1.59 & times; 10-4 g/mg min-1). Dosage studies yielded a Langmuir qmax of 572 mg/g. Remarkably, performance remained pH-independent from 3 to 9, suggesting that pi-pi interactions and pore filling contributed importantly to MB uptake despite electrostatically unfavourable conditions, in agreement with the hybrid PSO-IPD analysis and speciation considerations. For Cu (II), AC-700M2 (SSA 1070 m2/g, N 6.3 wt%) showed the best performance among the tested materials, with results consistent with a contribution from N/O-containing surface sites under near-neutral pH, although precipitation effects may contribute at pH 7. Method 2 produced the most porous material among the tested samples and the highest MB performance. These findings demonstrate the feasibility of wool waste as sustainable dual-pollutant adsorbents, promoting circular economy in wastewater remediation.
: With increasing political polarization accompanied by various economic threats and crises, the interplay of politics and work is crucial to understanding emerging phenomena. With this position paper, we highlight what work and organizational psychology can offer in the work-politics nexus. We classify three broad streams in which we see the need for more research on the work-politics nexus: (a) politics affecting work, (b) work affecting political attitudes and engagement, and (c) political participation at work. Using these areas, we highlight the urgency for organizations and practitioners to pay attention and provide future research directions for work and organizational psychology scholars. This position paper aims to highlight initial work and organizational psychological research in the work-politics nexus and encourages work and organizational psychologists to direct more attention toward the intersection of work and the broader civic sphere. Zusammenfassung: Angesichts der zunehmenden politischen Polarisierung, begleitet von verschiedenen wirtschaftlichen Bedrohungen und Krisen, ist das Zusammenspiel von Politik und Arbeit entscheidend f & uuml;r das Verst & auml;ndnis neu auftretender Ph & auml;nomene. Mit diesem Positionspapier heben wir hervor, was die Arbeits- und Organisationspsychologie im Zusammenhang zwischen Arbeit und Politik leisten kann. Wir unterscheiden drei gro ss e Bereiche, in denen wir einen Forschungsbedarf zum Zusammenhang zwischen Arbeit und Politik sehen: (a) Politik, die sich auf die Arbeit auswirkt, (b) Arbeit, die sich auf die Politik auswirkt, und (c) politische Partizipation am Arbeitsplatz. Anhand dieser Bereiche betonen wir die Dringlichkeit f & uuml;r Organisationen, diesem Thema Aufmerksamkeit zu schenken, und geben zuk & uuml;nftige Forschungsrichtungen f & uuml;r Wissenschaftler und Wissenschaftlerinnen der Arbeits- und Organisationspsychologie vor. Dieses Positionspapier soll erste arbeits- und organisationspsychologische Forschungsarbeiten im Zusammenhang zwischen Arbeit und Politik hervorheben und Arbeits- und Organisationspsychologen und -psychologinnen dazu ermutigen, mehr Aufmerksamkeit auf die Schnittstelle zwischen Arbeit und dem breiteren zivilgesellschaftlichen Bereich zu richten.
Sulfur is an essential macronutrient, yet its role in grapevine (Vitis vinifera L.) physiology is poorly understood. Following reduced atmospheric sulfur deposition, sulfur fertilization is increasingly required to prevent deficiencies, which are difficult to diagnose before they impair grapevine-and subsequent wine-quality. Therefore, the metabolic responses of grapevines to isolated and combined sulfur and nitrogen deficiencies were investigated. Using a non-targeted metabolomics and ionomics approach under controlled sulfur and nitrogen supplies, it was shown that isolated sulfur deficiency led to a massive accumulation of nitrogen-rich amino acids and activation of the gamma-aminobutyric acid shunt. This metabolic imbalance, and its disruptive effect on the concentration of other plant nutrients, was significantly alleviated under combined sulfur deficiency and low nitrogen, while additive effects also occurred. Sulfur deficiency uniquely induced a drastic increase in transpiration, significantly reducing intrinsic water use efficiency. We identified specific metabolic markers for each nutrient status and evaluated diagnostic indicators. The interaction between sulfur and nitrogen is important and demonstrates that adequate sulfate nutrition is essential for optimizing water use efficiency and metabolic balance, suggesting that nitrogen-management strategies should consider sulfur availability to ensure crop resilience in a changing climate. Sulfur deficiency in grapevines induces nitrogen overflow and reduces water use efficiency. Although simultaneous low nitrogen alleviates this sulfur deficiency, additive effects also occur, highlighting the critical sulfur-nitrogen balance.
Entrepreneurs who venture into foreign countries encounter a different institutional logic. Understanding and addressing such logic is essential to overcoming the liabilities of foreignness and newness to legitimize the foreign venture. Prior research has shown that foreign entrepreneurs who fail to align with local institutional logic struggle to overcome resource constraints, thereby limiting their venture growth. This study examined the legitimation process under institutional pluralism by exploring how productive foreign entrepreneurs achieve legitimacy in China. Therefore, our longitudinal study traced the process of a European entrepreneur in China over almost 2 years, using interviews, weekly diary entries, and archival data. By theorizing differentiated legitimacy thresholds and audience-contingent sequencing, this study closes the gap between legitimacy theory and foreign entrepreneurship research. It advances understanding of productive foreign entrepreneurship in culturally distant contexts and provides a process mechanism of how legitimacy is constructed, challenged, and partially stabilized under conditions of institutional pluralism.
BACKGROUND:The garden dormouse (Eliomys quercinus) is one of the fastest-declining mammals in Europe, and action is needed to prevent further population losses. The primary causes of declines are not well-understood, as the species experiences variable conditions and threats across its range, but likely include habitat fragmentation and loss. Previous genetic studies have provided evidence of highly structured garden dormouse populations in Western Europe, despite this region having been defined as a single clade with mitochondrial DNA analysis. Within Western Europe, the magnitude of declines has been recognized to be greater on the eastern edge of the species' range, which could explain differentiation within the clade as resulting from diversity loss and genetic drift for regions under greater risk of extirpation. Here, we focus on fine-scale genomic differentiation across the Western European clade to explore the consequences of genomic erosion on the eastern region and to help identify mechanisms driving genetic differentiation within this species. RESULTS:We found genetic differentiation both between and within major geographic regions. Populations located in the eastern edge of the species' range showed stronger signs of population isolation, including structure between spatially distant populations, lower genetic diversity, and greater rates of inbreeding. However, all populations exhibited signals of recent rapid population decline. Outlier analyses indicated that differentiation between regions was primarily due to genetic drift resulting from isolation-by-distance rather than adaptive differentiation. We also found genetic structuring between populations within the Rhine Valley, despite apparent lack of physical barriers preventing dispersal among groups within this region. CONCLUSIONS:Our findings indicate that population isolation following habitat loss and fragmentation has likely been a major contributor to garden dormouse declines. Dispersal among disparate garden dormouse sampling regions is restricted-even across local spatial scales-leading to loss of genetic diversity and potential erosion of evolutionary potential. With 21st century declines expected to continue across the species' range, even relatively common and well-connected populations are likely to follow the trajectory of the eastern populations, with increasing loss of diversity as populations contract and become more isolated.
