Results 81 to 90 of about 1,125,629 (142)

Influence of Structural and Environmental Parameters on Solar Air Collector Performance

open access: yesEnergy Science &Engineering, Volume 14, Issue 9, Page 4409-4421, September 2026.
Increasing air gap depth and mass flow rate significantly enhances the thermal performance of solar air collectors, with optimal performance achieved at an 8.5 cm air gap and 0.01318 kg/s mass flow rate. Air gap depth is identified as the dominant factor influencing system efficiency.
Quankun Zhu   +2 more
wiley   +1 more source

Assessment of Vertebral Body Bone Quality in Adolescent Idiopathic Scoliosis (AIS) Using Micro‐CT, qBEI, and Nanoindentation—A Case Study

open access: yesJOR SPINE, Volume 9, Issue 3, September 2026.
A new biopsy protocol enabled the first combined micro‐CT, qBEI, and nanoindentation study of AIS vertebral bodies, revealing slightly thicker trabeculae, broader mineralization distribution, and decreasing mineralization and reduced modulus with vertebral wedge angle severity—supporting a role for altered bone quality in AIS.
Natalia M. Castoldi   +12 more
wiley   +1 more source

Methodological constraints for the stable isotope analysis of different tissues: A comparison between muscle and whole‐body samples in freshwater gammarids

open access: yesLimnology and Oceanography: Methods, Volume 24, Issue 9, September 2026.
Abstract Carbon (δ13C) and nitrogen (δ15N) stable isotope ratios allow the reconstruction of food webs, provided that all trophic levels are properly characterized. In freshwater ecosystems, small‐bodied invertebrates often occupy central positions in food webs, with whole‐body samples commonly used for their stable isotope analysis, due to ...
Alan Fritsch   +3 more
wiley   +1 more source

A Linear Generalization of the Nearly Gorenstein Property, With Applications to Veronese Subalgebras

open access: yesMathematische Nachrichten, Volume 299, Issue 9, Page 2436-2451, September 2026.
ABSTRACT We study the nearly Gorenstein property for Veronese subalgebras of (semi‐)standard graded algebras. We introduce a condition (♮)$(\natural)$ for Cohen–Macaulay semi‐standard graded rings, motivated by the study of Ehrhart rings. We show that if a semi‐standard graded algebra R$ R$ satisfies (♮)$(\natural)$, then its Veronese subalgebras R(k)$
Sora Miyashita
wiley   +1 more source

Some Problems in the Representation Theory of Hyperoctahedral Groups and Related Algebras [PDF]

open access: yes, 2003
PhDWe begin by using a version of Green correspondence due to Grabmeier to count the number of components of two permutation modules V®r and y®r for the hyperoctahedral group.
Brown, Benjamin Charles
core  

On the Existential Theory of the Completions of a Global Field

open access: yesMathematische Nachrichten, Volume 299, Issue 9, Page 2680-2692, September 2026.
ABSTRACT We discuss the common existential theory of all or almost all completions of a global function field.
Philip Dittmann, Arno Fehm
wiley   +1 more source

Predicting the Toxicity of Chemical Compounds via Hyperdimensional Computing

open access: yesMolecular Informatics, Volume 45, Issue 9, September 2026.
Hyperdimensional computing converts text representations of chemical structures (SMILES) into high‐dimensional vectors. New compounds are classified by comparison with learned toxic and nontoxic reference patterns; across 12 Tox21 targets, overlapping four‐character SMILES patterns performed best among tested representations, supporting fast ...
Fabio Cumbo   +6 more
wiley   +1 more source

Dynamic Characteristics Analysis of a Large Wind Turbine Gearbox Supported by Journal Bearings Under Different Lubrication States

open access: yesWind Energy, Volume 29, Issue 9, September 2026.
ABSTRACT Due to their superior load density, planetary gear journal bearings (PGJB) are progressively replacing rolling element bearings in wind turbine gearboxes; therefore, accurately revealing the dynamic characteristics of drivetrains supported by these bearings under variable operating conditions is crucial for ensuring operational reliability ...
Pengcheng Jin   +3 more
wiley   +1 more source

Origin and application of the Lorentz factor in X‐ray diffraction

open access: yesActa Crystallographica Section A, Volume 82, Issue 5, Page 350-360, September 2026.
This review treats the role of the Lorentz factor in quantitative analysis of X‐ray diffraction data. The origin of the Lorentz factor, its derivation and practical implementations for a variety of modern X‐ray diffraction methods are discussed.The Lorentz factor is a fundamental correction factor in quantitative analysis of X‐ray diffraction ...
Fabian Gasser   +5 more
wiley   +1 more source

Repurposing Agricultural Budgets With Multiple Objectives and Fiscal Constraints: A Multicriteria Decision‐Making Policy Tool Applied to Sub‐Saharan African Countries

open access: yesJournal of Agricultural Economics, Volume 77, Issue 3, Page 910-927, September 2026.
ABSTRACT Repurposing agricultural public resources toward higher‐return incentives and investments can help transform agri‐food systems. This is important for low‐income countries, especially in sub‐Saharan Africa, where limited budgets restrict options for boosting agricultural spending.
Marco V. Sánchez   +3 more
wiley   +1 more source

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