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Effects of initial spin orientation on the generation of polarized electron beams from laser wakefield acceleration in plasma
No full textIntegrating deep learning and multi-objective optimization for floodwater utilization: a coordinated surface water-groundwater regulation framework for groundwater recovery
No full textWhat drives disparities in the diffusion of residential PV and battery systems? A spatial econometric analysis in the context of dynamic regulatory arrangements
No full textImpacts of inflow forecast uncertainties on economic and environmental co-benefits for cascade reservoirs optimal scheduling
No full textDeuterium retention and erosion resistance of low-pressure plasma sprayed tungsten coatings
No full textLook for efficient Pr–Ni based SOCs oxygen electrodes in the Ruddlesden - Popper series: preliminary thermal stability studies focused on PrNiO3-δ and (Pr, La)4Ni3O10+δ
No full textThe present work investigates the thermal stability of Pr–Ni based nickelates belonging to the Ruddlesden-Popper (RP) series, specifically Pr4Ni3O10+δ, La4Ni3O10+δ, La3PrNi3O10+δ (n = 3), and PrNiO3-δ (n = ∞), as promising oxygen electrode materials for solid oxide cells (SOCs). A detailed preliminary study is therefore essential to determine the optimal conditions, particularly temperature and oxygen partial pressure (pO2), required for the successful synthesis, sintering, and application of these materials as electrodes. Thermogravimetric analysis (TGA) and X-ray diffraction (XRD) are employed to study their phase stability and decomposition behaviour under various atmospheres (argon, air, and oxygen). The results show that PrNiO3-δ has limited thermal stability, decomposing above 1040 °C in oxygen, while the other RP phases demonstrate greater stability, particularly Pr4Ni3O10+δ, which remains stable up to 1120 °C under oxygen. The substitution of La by Pr further improves the stability of the RP phases. Long-term aging experiments at 600–800 °C confirm that all materials maintain their phase integrity under air for up to three months. This study provides essential insights into optimizing synthesis and sintering conditions for these materials, supporting their application in high-temperature SOC devices
Impact of biochar, compost, and sludge amendments on the soil water balance of a sandy soil
No full textHeritability of gray matter volume and asymmetry in chimpanzees (Pan troglodytes) and their association to cognitive abilities and tool use
No full textGenetic studies have increasingly identified key mechanisms that underlie individual and phylogenetic variation in behavioral and brain phenotypes. Here, we used quantitative genetics to estimate heritability in whole brain and region-specific variation in gray matter in a sample of captive chimpanzees. We included the contributions of sex and age to individual variation in gray matter as well as their association with cognition and motor functions and found small to moderate heritability in average gray matter volume in the majority of brain regions. By contrast, weaker estimates of heritability were found when considering asymmetries in gray matter across brain regions. Age was inversely associated with gray matter volume for the frontal lobe and the basal forebrain after accounting for sex and relatedness of the chimpanzees. Chimpanzees that had higher cognition scores were found to have greater leftward asymmetries in the regions comprising the frontal lobe and basal forebrain component. Further, chimpanzees with better performance on a tool use task had higher gray matter volumes in the frontal and basal forebrain regions. However, no genetic associations were found between tool use performance or cognition and the average frontal or basal forebrain gray matter volumes or asymmetry
Unleashing the power of non-toxic Zn-guanidine catalysts for sustainable lactide polymerization through smart modeling
No full textScoliosis Surgery in a Patient With Advanced Friedreich's Ataxia—It Is Not Too Late
No full textFriedreich's ataxia is a multisystem disorder with scoliosis being the most common non-neurological manifestation. While scoliosis surgery is typically performed in adolescent, ambulatory patients, few data exist on surgical outcomes in patients with advanced disease. We present a 38-year-old woman with late-stage Friedreich's ataxia and pronounced thoracolumbar scoliosis (Cobb angle 48°) causing severe pain and limited sitting tolerance. After posterior corrective spondylodesis (T4-ilium), she reported marked improvements in pain, sitting tolerance, function, and quality of life in the SF-36 questionnaire. This case highlights the potential for substantial clinical and functional benefits from scoliosis surgery in patients with advanced Friedreich's ataxia