Results 51 to 60 of about 3,047,834 (351)

Split-Stirling, linear-resonant, cryogenic refrigerators for detector cooling [PDF]

open access: yes, 1983
For the past decade, military IR systems have preferred to see cryogenic coolers provided as split units; separating the functions of compressor and cold-end for system packaging and vibration isolation reasons.
Lehrfeld, D.
core   +1 more source

An Eco‐Social Lens on Voice for Undervoiced and Unvoiced Stakeholders

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This conceptual paper argues it is important from an ecological–social (eco‐social) whole system point of view for businesses and policymakers to take the interests of and impacts on unvoiced and undervoiced [un(der)voiced] stakeholders into consideration for both strategic and justice reasons.
Sandra Waddock
wiley   +1 more source

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

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

Navigating ESG in the Artificial Intelligence Era: Evidence From AI Pilot Zones in China

open access: yesInternational Studies of Economics, EarlyView.
ABSTRACT Artificial intelligence is reshaping business models, but limited literature explores how ESG evolves in the AI era. This paper regards AI Pilot Zones in China as a quasi‐natural experiment, and adopts the DID approach to investigate its impact on corporate ESG performance. Using the sample of Chinese A‐share listed companies from 2016 to 2022,
Yujie Liu, Xinyi Shen
wiley   +1 more source

Magentically actuated compressor [PDF]

open access: yes, 1985
A vibration free fluid compressor particularly adapted for Stirling cycle cryogenic refrigeration apparatus comprises a pair of identical opposing ferromagnetic pistons located in a housing and between a gas spring including a sealed volume of a working ...
Evans, J., Studer, P. A.
core   +1 more source

A Linear‐to‐Linear Cross‐Polarization Conversion q‐BIC Metasurface for Transmission Mode Mid‐Infrared Spectral Filtering

open access: yesLaser &Photonics Reviews, EarlyView.
Manipulating the ultranarrow linewidth spectral features of quasi bound states in the continuum is challenging. A metasurface supporting linear‐to‐linear cross‐polarization coupling efficiency surpassing 25% is proposed to address the issue. Less than 100 nm linewidth is achieved, enabling the device to be applied to wavelength‐selective polarization ...
Shuhao Wu   +5 more
wiley   +1 more source

Stance and Gait Analysis of Apollo Astronauts on the Moon

open access: yesMuscle &Nerve, EarlyView.
ABSTRACT Introduction/Aim As humans return to the Moon, safe efficient ambulation and fall prevention on the lunar surface are key concerns. The analysis of gait from archived Apollo mission video footage is now possible with pose estimation video analysis software.
Faye Y. Chiou‐Tan   +4 more
wiley   +1 more source

Evaluation of a second order simulation for Sterling engine design and optimisation

open access: yesJournal of Energy in Southern Africa, 2017
This paper reports on the investigation of the simulation accuracy of a second order Stirling cycle simulation tool as developed by Urieli (2001) and improvements thereof against the known performance of the GPU-3 Stirling engine.
Johannes M. Strauss, Robert T. Dobson
doaj   +1 more source

Tree planting, natural colonisation, hybrid approaches: Land manager decisions explored

open access: yesPeople and Nature, EarlyView.
Abstract There is a global drive to protect biodiversity and help combat climate change. In the UK, this is expressed in a number of policy initiatives and tools that include increasing tree cover as an important nature‐based solution to achieving national policy targets.
Bianca Ambrose‐Oji   +5 more
wiley   +1 more source

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