Research works

Hamana’s injective envelope as a maximal rigid multiplier cover

Abstract Let A be a unital $$C^*$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>C</mml:mi> <mml:mo>∗</mml:mo> </mml:msup> </mml:math> -algebra. An A -multiplier cover is a $$C^*$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup>...

Surface roughness dating for lava flows: a new remote sensing geochronometer for volcanic hazard assessment

Abstract Regional geologic histories are key to mitigating the impact of geologic hazards on nearby communities, but standard geochronology remains costly and labor-intensive. In contrast, surface roughness derived from high-resolution topographic data is an emerging technique fo...

Minimal Non-Units, Prime-Support Boundaries, and Batch Unit Testing: A Structural Reformulation and Open Decision Problem for Deterministic Integer Factorization

This audit-corrected preprint consolidates research notes V0.2–V1.0 on deterministic integer factorization. It identifies the least prime factor of a composite integer as the first non-unit in natural order modulo N, separates prime-support information from evaluation circuit and...

EngineeringIntermediate Phases in Topotactic PhaseTransitions of Cobaltite Perovskites

Abstract Topotactic phase transitions in perovskite cobaltites (R1–xAxCoO3−δ; R = rare earth, A = alkaline-earth ion) play a key role in the operation of neuromorphic devices, where oxygen vacancy concentration (δ) modulates resistive switching. However, the emergence of an insul...

Nanoscale Insights:Exploring Undersaturated Crystallizationof Flufenamic Acid with Liquid Phase Transmission Electron Microscopy

Abstract Pharmaceutical crystallization traditionally requires supersaturation to occur and is typically monitored through macroscopic characterization methods that can measure induction times and growth rates. However, detailed insights revealing the precise steps and mechanisms...

Rapidly enlarging port-site mass after thoracoscopic lung resection: desmoid-type fibromatosis mimicking pleural recurrence

Abstract Background Desmoid-type fibromatosis is a rare, benign fibroblastic neoplasm characterized by infiltrative growth and a tendency for local recurrence despite the absence of metastatic potential. It has been associated with prior trauma or surgery, and postoperative lesio...

Disparities in Hospital Length of Stay and Morbidity in Acute Care Pediatric Cardiology Patients

BACKGROUND Multicenter collaborative studies examining disparities in in-hospital outcomes are lacking in pediatric cardiology. We hypothesized that Black and Hispanic patients in pediatric acute care cardiology units (ACCUs) have increased length of stay (LOS) and complications...

Factors influencing female physicians’ careers in the German-speaking part of Switzerland

Despite an increase in female physicians in Swiss hospitals, most executive positions are still held by male physicians. This study aimed to identify obstacles and institutional factors influencing female physicians' careers and to evaluate ways to support their professional adva...

Forensic evidence from a 30-year study of non-thrombotic pulmonary embolism

Non-thrombotic pulmonary embolism (NTPE) represents a heterogeneous and underrecognized group of conditions characterized by the obstruction of the pulmonary vasculature by non-thrombotic material, often associated with complex pathogenetic mechanisms and non-specific clinical pr...

Empathy and Interpersonal Sensitivity in Pornography Use and Problematic Pornography Use: A Narrative Review

Abstract Purpose of Review Pornography consumption has become increasingly prevalent in digital environments, with a subset of individuals developing problematic pornography use (PPU). Despite growing research interest, limited attention has been given to the role of empathy and...

DOCC Documentation and Object Context Compilation

DOCC — Documentation and Object Context Compilation represents the current and canonical documentation and input-data module of the integrated IAS-DX framework for deep excavations. The framework consolidates and reorganises the technical content developed through the earlier KIB...

Finite Partition-Function Curvatures

Let $Z(\beta)=\sum_{j=1}^{m}g_j e^{-\beta e_j},\qquad$ $0<g_j,\quad e_1<\cdots<e_m,$ be a primitive finite weighted canonical partition function, and let \(K=(\log Z)''\) be its log-partition curvature. Physically, \(K\) is the canonical energy variance and satisfies \(C_V=k_B\be...

Real-world walking and activity patterns in community-dwelling older adults: a cross-sectional analysis of baseline data from the SMART-AGE trial

Abstract Background Digital mobility outcomes (DMOs) measured under real-world conditions allow for differentiated insights into mobility patterns of older adults. This study provides an advanced description of real-world walking in community-dwelling older adults and identifies...

Cross-Sector Pattern from Two Constants: Eight Standard-Model Observables Constrained by p and q

We report an empirical pattern in which eight Standard Model observables—the Higgs mass, the top-quark mass, three PMNS mixing angles, two CP-violating phases, and the strong coupling constant—are constrained to within ±1% by two constants, p≈0.5437 and q=1/5, with zero adjustabl...

Corn Stover-DerivedLewis Acid Carbon Catalyst forEfficient Hantzsch Synthesis of 1,4-Dihydropyridines

Abstract The development of sustainable heterogeneous catalysts from renewable biomass is an important strategy for advancing green organic synthesis. In this work, a series of Lewis acid carbon catalysts were prepared from corn stover via AlCl3-assisted activation and thermal ca...

Marine-DegradableParamylon Ethers and Ether–EsterDerivatives with Tunable Thermoplasticity and Controlled DissolutionBehavior

Abstract Paramylon, a β-1,3-glucan from Euglena gracilis, is a promising renewable feedstock for biodegradable plastics, but its dense hydrogen-bonding network limits thermoplastic processing. Methyl paramylon (PaMe), ethyl paramylon (PaEt), and paramylon methyl acetate ether–est...

Felt and expressed needs regarding occupational health services from the perspective of micro-, small and medium-sized enterprises: a scoping review

BACKGROUND: In the context of the changing need for health care and prevention due to climate, digital and demographic change, occupational health services are of enormous relevance, as many people can be reached. Of particular interest are the occupational health services in mic...

Rare-EarthMetal Triflates Inclusion Complexes withCobalt(II) Hemicryptophane Tren Cage

Abstract Rare-earth metal triflates can modulate the structure, redox properties, and reactivity of transition-metal complexes when confined in supramolecular hosts. In this paper, we have investigated the inclusion of rare-earth metal triflates (Ln(OTf)3, Ln = Dy, Yb, La, Lu) in...

A fixed-time fault-tolerant tracking control for fractional-order UAV networks using adaptive fuzzy neural and event-triggered mechanisms

Abstract This paper investigates coordinated tracking control for fractional-order fixed-wing unmanned aerial vehicle (UAV) networks subject to actuator faults, input saturation, unknown nonlinear dynamics, external disturbances, and communication constraints. A dynamic memory ev...

Fire as a productive and preventive technology: traditional knowledge and risk governance in Kalunga agropastoral mosaics

Abstract Background Savanna landscapes have returned to the centre of socio-environmental debate as climate variability, agricultural expansion, and prohibition-oriented policies reshape how fire is understood and governed. Focusing on Brazil’s largest maroon (quilombola) territo...