Results 41 to 50 of about 142,701 (255)
A softer look at MCG--6-30-15 with XMM-Newton
, 2003 We present analysis and results from the Reflection Grating Spectrometer during the 320 ks XMM observation of the Seyfert 1 galaxy MCG-6-30-15. The spectrum is marked by a sharp drop in flux at 0.7 keV which has been interpreted by Branduardi-Raymont et ...
A. C. Fabian +32 more
core +1 more source
Absolute differential positronium-formation cross sections [PDF]
, 2015 The first absolute experimental determinations of the differential cross-sections for the formation of ground-state positronium are presented for He, Ar, H2 and CO2 near 0○. Results are compared with available theories.
Armitage, S +8 more
core +2 more sources
Recollements from Cotorsion Pairs
, 2018 Given a complete hereditary cotorsion pair $(\mathcal{A},\mathcal{B})$ in a Grothendieck category $\mathcal{G}$, the derived category $\mathcal{D}(\mathcal{B})$ of the exact category $\mathcal{B}$ is defined as the quotient of the category $\mathrm{Ch ...
Bazzoni, Silvana, Tarantino, Marco
core +1 more source
Hamilton-Jacobi Theory in k-Symplectic Field Theories [PDF]
, 2010 In this paper we extend the geometric formalism of Hamilton-Jacobi theory for Mechanics to the case of classical field theories in the k-symplectic ...
Abraham R. A. +10 more
core +1 more source
Creep in fibre-reinforced polymer mat composites [PDF]
, 2007 Tensile creeps have been conducted upon a woven, glass-fibre laminated epoxy composite and a 0/90° cross ply, carbon fibre reinforced epoxy composite. For the laminate loading was aligned with a fibre direction.
Dix, S, Garner, AF, Rees, DWA
core
Bounds on the Automata Size for Presburger Arithmetic
, 2004 Automata provide a decision procedure for Presburger arithmetic. However, until now only crude lower and upper bounds were known on the sizes of the automata produced by this approach. In this paper, we prove an upper bound on the the number of states of
Klaedtke, Felix
core +5 more sources
Learning probability distributions generated by finite-state machines [PDF]
, 2016 We review methods for inference of probability distributions generated by probabilistic automata and related models for sequence generation. We focus on methods that can be proved to learn in the inference in the limit and PAC formal models. The methods
Castro Rabal, Jorge +1 more
core +2 more sources
SiC/Si ceramic hollow fibres: A new approach to Chlorella vulgaris biomass harvesting
The Canadian Journal of Chemical Engineering, EarlyView.Abstract Efficient harvesting of microalgae is a critical challenge for the viability of biorefineries, requiring technologies that combine high selectivity, low cost, and scalability. The current work evaluated the performance of an asymmetric hollow fibre ceramic membrane (HF‐SiC70Si30), fabricated by phase inversion and sintered at 1250°C, in the ...
Erisson Paulo Borges Lopes +4 more
wiley +1 more source
Dwa amerykańskie konserwatywne republikanizmy
Politeja, 2023 TWO AMERICAN CONSERVATIVE REPUBLICANISMS: THE INTELLECTUAL ORIGINS OF THE AMERICAN CONSERVATIVE RIGHT During the founding period of the United States, the ideological foundations of American political discourse were formed.
Tomasz Tulejski
doaj +1 more source
Learning Networks Drive Environmental Innovation: Evidence From Fourth‐Stage Purification Diffusion
Environmental Policy and Governance, EarlyView.ABSTRACT Contaminants of emerging concern, including pharmaceuticals and industrial chemicals, threaten water quality globally. In the European Union (EU), until the adoption of the revised Urban Wastewater Treatment Directive in 2024, a regulatory gap had left the member states and the municipalities in them without binding removal standards ...
Simon Bulian +3 more
wiley +1 more source