Results 251 to 260 of about 190,995 (279)

Fuel Prices and Ambient Air Pollution: A Study of Sydney*

open access: yesEconomic Record, EarlyView.
This paper explores the short‐run influence of road transport fuel prices on ambient air pollution over the period 2004–2023 for the case of Sydney, Australia. Using daily data from nine air quality monitoring stations, we find negative effects of fuel prices on ambient concentrations of several key pollutants including ozone, nitrogen dioxide and ...
Paul J. Burke, Jian Li
wiley   +1 more source

Aging Reduces Intestinal Stem Cell Activity in Killifish and Intermittent Fasting Reverses Intestinal Gene Expression Patterns

open access: yesAging Cell, EarlyView.
Intestinal stem cells occur in clusters, and the cycle time of stem cells increases with age. The age‐dependent decline in structural intestinal tissue homeostasis is associated with a decline in stem cell activity. Aging causes significant changes in intestinal gene expression; intermittent fasting from adulthood onwards results in a gene expression ...
Michael Kothmayer   +12 more
wiley   +1 more source

An Economic Analysis of Difficulty Adjustment Algorithms in Proof‐of‐Work Blockchain Systems

open access: yesInternational Economic Review, EarlyView.
ABSTRACT We study the stability of cryptocurrency systems through difficulty adjustment. Bitcoin's difficulty adjustment algorithm (DAA) exhibits instability when the reward elasticity of the hash rate is high, implying that a sharp price reduction could disrupt the current Bitcoin system.
Shunya Noda   +2 more
wiley   +1 more source

Phonon anomaly and local distortion in iron-manganese-based Elinvar alloys. [PDF]

open access: yesSci Technol Adv Mater
Umemoto Y   +10 more
europepmc   +1 more source

Contrast by electron microscopy in thick biological specimens

open access: yesJournal of Microscopy, EarlyView.
Abstract The contributions of coherent bright‐field phase and incoherent dark‐field amplitude contrast are investigated for thick biological specimens. A model for a T4 phage is constructed and images simulated for both TEM and STEM phase contrast using a multislice code.
Peter Rez   +3 more
wiley   +1 more source

Correlation of near‐field optical microscopy and tip‐assisted photoluminescence

open access: yesJournal of Microscopy, EarlyView.
Abstract Nanoscale optical imaging has unlocked unprecedented opportunities for exploring the structural, electronic, and optical properties of low‐dimensional materials with spatial resolutions far beyond the diffraction limit. Techniques such as tip‐enhanced, and tip‐assisted photoluminescence (TEPL and TAPL), as well as scattering‐type scanning near‐
W. Pfeiffer   +4 more
wiley   +1 more source

Comparison of time-of-flight and MIEZE neutron spectroscopy of H<sub>2</sub>O. [PDF]

open access: yesJ Appl Crystallogr
Beddrich L   +9 more
europepmc   +1 more source

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