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A Spatial Overlapping Generations Model with Environmental and Human Capital Externalities: Evidence from European Regions (1995–2025)

This paper develops and empirically validates a spatial overlapping generations model to demonstrate that inter-regional knowledge spillovers and environmental externalities significantly shape European regional growth, revealing that human capital diffusion drives convergence while transboundary pollution hinders welfare, thereby supporting integrated policies that boost human capital and environmental quality.

Sid Ahmed ZENAGUI2026-07-27

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From enduring side effects to redesigning the service: contraceptive method knowledge, the lived experience of side effects, and clients’ recommendations for family planning care at an urban hospital in Accra, Ghana

This qualitative study of 20 adults in Accra, Ghana, reveals that while contraceptive awareness is high, continuation is hindered by the normalization of side effects and limited risk knowledge, leading to recommendations for person-centered counseling, gender-inclusive outreach, and structured follow-up to improve family planning services.

Daniel Azure Akolbire, Emmanuel Omari Boakye, freda Kuntu-Blankson2026-07-27

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The effect of dietary fiber based on fermentability and viscosity on the gut microbiome composition in chronic kidney disease: a systematic review of experimental and clinical trials

This systematic review of 22 experimental and clinical trials concludes that isolated dietary fiber interventions yield variable and largely inconsistent effects on gut microbiota composition in chronic kidney disease patients, with no clear pattern emerging based solely on fiber fermentability or viscosity.

Seyedeh Nooshan Mirmohammadali, Claudia Carrillo, Jason B. Reed, Brandon M. Kistler, Hannah E. Wilson, Bruce Hamaker, Sh (…)2026-07-27

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Equivalent Roughness Height for CFD Studies on NACA Airfoils

This paper proposes a procedure to estimate equivalent sand-grain roughness height from surface particle coverage for NACA airfoils and evaluates the accuracy of various turbulence models with roughness corrections in predicting aerodynamic performance under complex pressure gradients, addressing the limitations of existing canonical-flow-based calibrations.

Alexis De Urraza, Juan M. Torres Zanardi, Ana Scarabino, Federico Bacchi2026-07-27

📄 other

Analysis of selected factors in pelvic organ prolapse and urinary incontinence and the differentiation of clinical forms – a pilot study

This retrospective pilot study of 398 women identified multiparity and high body mass index as significant risk factors for pelvic organ prolapse and stress urinary incontinence, while finding no statistically significant correlations with miscarriages, preterm births, or smoking.

Jakub Mroczyk, Grażyna Jarząbek-Bielecka, Piotr Merks, Katarzyna Plagens-Rotman, Witold Kędzia, Magdalena Pisarska-Krawc (…)2026-07-27

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Epicatechin and Blood Pressure: A Systematic Review of Human Intervention Studies

This systematic review of thirteen human intervention studies concludes that while epicatechin may occasionally lower blood pressure in healthy individuals, the overall evidence does not support a consistent or clear antihypertensive effect, highlighting the need for further well-designed trials in hypertensive populations.

Patricia dos Santos Azeredo, Diogo de Moraes, Laena Pernomian, Cristina Pontes Vicente2026-07-27

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A Biomedical Benchmark and Modular RAG Framework for Text2Cypher

This paper introduces bio2C, a FAIR-compliant benchmark of 2,500 curated natural language-Cypher pairs, and a modular Retrieval-Augmented Generation framework that significantly improves Text2Cypher accuracy for biomedical knowledge graphs by leveraging retrieved examples over schema-based prompting.

Emanuele Cavalleri, Nada Bou Kanaan, Marco Mesiti2026-07-27

📄 other

Conformalized Prediction of Acute Kidney Injury in the ICU: Distribution-Free Coverage Guarantees with Class-Conditional Validity and External Validation

This study presents a novel conformal prediction framework for acute kidney injury in ICU settings that leverages external validation across two hospitals to provide distribution-free coverage guarantees, demonstrating that class-conditional methods effectively isolate distribution shifts from prevalence differences while achieving high predictive accuracy and reliable risk stratification.

Jeffery Opoku, David Banahene2026-07-27

📄 other

Quadratic Difference Operators and Structural Compression in the Erdős–Rankin Prime Gap Problem

This paper claims to utilize the 52 known even perfect numbers to establish a structural regularity governed by a characteristic quadratic mapping and a predictive formulation based on the baseline 12k + 7, aiming to model the macroscopic spacing of perfect numbers and estimate higher-order candidates while transcending traditional computational limits.

Shang Yu Chen2026-07-27

📄 other

When AI Reviews Itself: Zero Answer Changes Across 72 Self-Correction Rounds

This study demonstrates that frontier large language models exhibit "performative self-correction" by generating extensive critical discourse without ever substantively revising their initial answers across 72 iterative review rounds, thereby challenging the efficacy of prompting-based correction strategies for improving AI reliability.

Abbas Hamidavi2026-07-27

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