Results 51 to 60 of about 153,050 (234)

Versatile Palladium‐Catalyzed C‐H Arylation of Fluoroarenes with 2‐Chloropyridine Derivatives

open access: yesChemistry – A European Journal, EarlyView.
Direct C─H arylation of fluoroarenes with 2‐chloropyridines is enabled by a simple Pd/SPhos system in isopropyl acetate. The method uses inexpensive reactants and shows broad scope and high yields. DFT computations explain reactivity and selectivity.
Federico Belnome   +6 more
wiley   +1 more source

Accessible and Deterministic Automata: Enumeration and Boltzmann Samplers [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2006
We present a bijection between the set $\mathcal{A}_n$ of deterministic and accessible automata with $n$ states on a $k$-letters alphabet and some diagrams, which can themselves be represented as partitions of the set $[\![ 1..(kn+1) ]\!]$ into $n$ non ...
Frédérique Bassino, Cyril Nicaud
doaj   +1 more source

Invariant Measure and Universality of the 2D Yang–Mills Langevin Dynamic

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We prove that the Yang–Mills (YM) measure for the trivial principal bundle over the two‐dimensional torus, with any connected, compact structure group, is invariant for the associated renormalised Langevin dynamic. Our argument relies on a combination of regularity structures, lattice gauge‐fixing and Bourgain's method for invariant measures ...
Ilya Chevyrev, Hao Shen
wiley   +1 more source

Heat Load Mitigation Studies in the W7‐X Stellarator Experiment

open access: yesContributions to Plasma Physics, EarlyView.
ABSTRACT During the experiments at the stellarator Wendelstein 7‐X (W7‐X) with fully water‐cooled plasma‐facing components (PFC), including carbon‐fiber composite (CFC) divertor targets with a thermal load capability of 10 MW/m2, high performance was achieved.
Dirk Naujoks   +11 more
wiley   +1 more source

Trends in marine species distribution models: a review of methodological advances and future challenges

open access: yesEcography, EarlyView.
Correlative species distribution models (SDMs) are quantitative tools in biogeography and macroecology. Building upon the ecological niche concept, they correlate environmental covariates to species presence to model habitat suitability and predict species distributions.
Moritz Klaassen   +3 more
wiley   +1 more source

Study of Stirling Engine Efficiency Coefficient under Conditions Being Close to Real Ones

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2013
An absolute internal efficiency coefficient of the Stirling engine has been obtained without regenerator and with regenerator under conditions when van der Waals gas serves as a working medium.
R. M. Abramian
doaj  

On the Configurational Entropy of Nanoscale Solutions for More Accurate Surface and Bulk Nano-Thermodynamic Calculations

open access: yesEntropy, 2017
The configurational entropy of nanoscale solutions is discussed in this paper. As follows from the comparison of the exact equation of Boltzmann and its Stirling approximation (widely used for both macroscale and nanoscale solutions today), the latter ...
Andras Dezso, George Kaptay
doaj   +1 more source

From niche theory to demographic realities: the demographic niche concept for understanding range‐wide population dynamics

open access: yesEcography, EarlyView.
The ecological niche concept is fundamental to understanding species distributions but often overlooks the demographic processes shaping said distributions. Conversely, demographic theory has traditionally neglected how vital rates vary and covary across environments, limiting our understanding of population dynamics across species' ranges.
Sean E. H. Pang   +5 more
wiley   +1 more source

Innovations for Stakeholder Engagement in Water Governance: A Systematic Literature Review From a Sustainability Transition Perspective

open access: yesEnvironmental Policy and Governance, EarlyView.
ABSTRACT Sustainable and equitable governance of water resources is among the most pressing global challenges, emphasising the need for innovations towards transitions in the water sector. Innovations for stakeholder engagement can contribute to such transitions through public participation and cross‐sectoral collaboration.
Anne Ellermann   +7 more
wiley   +1 more source

Gaelic Learners in the Primary School (GLPS) in Argyll & Bute, East Ayrshire, North Lanarkshire, Perth & Kinross and Stirling : Evaluation Report [PDF]

open access: yes, 2003
For many years individual primary school teachers have no doubt sought to provide their pupils with a brief initial introduction to Gaelic language and culture.
Doughty, Hannah   +3 more
core  

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