Results 111 to 120 of about 2,249,217 (299)

A survey of X-ray emission from 100 kpc radio jets

open access: yes, 2014
We have completed a Chandra snapshot survey of 54 radio jets that are extended on arcsec scales. These are associated with flat spectrum radio quasars spanning a redshift range z=0.3 to 2.1. X-ray emission is detected from the jet of approximately 60% of
Bicknell, Geoffrey   +10 more
core   +1 more source

Electric Field‐Dependent Conductivity as Probe for Charge Carrier Delocalization and Morphology in Organic Semiconductors

open access: yesAdvanced Functional Materials, EarlyView.
Applying a high electric field to a doped organic semiconductor heats up the charge carrier distribution beyond the lattice temperature, enhancing conductivity. It is shown that the associated effective temperature can be used to extract the effective localization length, which is a characteristic length scale of charge transport and provides ...
Morteza Shokrani   +4 more
wiley   +1 more source

Last Glacial Maximum cooling induced positive moisture balance and maintained stable human populations in Australia

open access: yesCommunications Earth & Environment
Long-standing interpretations of the Last Glacial Maximum (21,000 ± 2000 years ago) in Australia suggest that the period was extremely cold and arid, during which the Indo-Australian summer monsoon system collapsed, and human populations declined and ...
Haidee Cadd   +7 more
doaj   +1 more source

Prenucleation Species Dictate Foreign Ion Incorporation in the Biomineral Precursor Amorphous Calcium Carbonate

open access: yesAdvanced Functional Materials, EarlyView.
ACC forms via aggregating prenucleation clusters that gatekeep its chemical composition. Ion identity steers the path: Ba and Sr substitute Ca in clusters, thereby inhibiting nucleation, with a dose‐dependent switch of Sr to induction. Mg partitions into Mg‐rich and Mg‐poor clusters; the latter form ACC, expelling Mg.
Qianyu Zhao   +9 more
wiley   +1 more source

Isolation Defines Identity: Functional Consequences of Extracellular Vesicle Purification Strategies

open access: yesAdvanced Healthcare Materials, EarlyView.
Four extracellular vesicle purification strategies are compared using ovarian‐cancer ascites and ES‐2 cell supernatants. A novel workflow links purification to function by combining particle‐normalized proteomics with matched cell‐free and cell‐based assays.
Christian Preußer   +10 more
wiley   +1 more source

A Catering Theory of Analyst Bias [PDF]

open access: yes
We posit a theory that runs counter to how conventional wisdom thinks about analyst bias, that it is the result of distorted incentives by “upstream” factors like the analysts’ employers.
Richard Kum-yew Lai
core   +3 more sources

Late Pleistocene island weathering and precipitation in the Western Pacific Warm Pool

open access: yesnpj Climate and Atmospheric Science
Deciphering past climate variability in the Western Pacific Warm Pool (WPWP), the Earth’s largest heat and moisture centre, is vital for understanding the global climate system.
Zhaojie Yu   +12 more
doaj   +1 more source

Disease surveillance using online news: an extended study of dengue fever in India

open access: yesTropical Medicine and Health, 2019
Background The study demonstrates the potential in using newspaper information as a proxy for monitoring dengue fever outbreaks in India. Online newspapers are being considered as sources of information on disease surveillance, early outbreak detection ...
Yiding Zhang   +2 more
doaj   +1 more source

Tunable Bioresorbable Scaffolds With Marine Sulfated Polysaccharides for Small‐Caliber Vascular Grafts: A Multi‐Layered Strategy Combining Electrospinning and 4‐Axis Printing

open access: yesAdvanced Healthcare Materials, EarlyView.
A multilayered small‐caliber vascular scaffold combining electrospinning and 4‐axis printing is developed and biofunctionalized with marine sulfated polysaccharides from Holothuria tubulosa. The resulting construct exhibits enhanced hemocompatibility, tunable mechanical properties, and supports endothelial and smooth muscle cell adhesion and ...
Gabriele Obino   +9 more
wiley   +1 more source

DETERRING AND THREATENING IN THE RUSSIAN-UKRAINIAN WAR: A GAME THEORY PERSPECTIVE

open access: yesEconomy and Sociology
Russia’s full-scale invasion of Ukraine in 2022 marked a significant turning point in the post-World War II history of Europe, with the realist and idealist views on international relations offering contrasting interpretations of its underlying sources ...
Adelina Andrei
doaj   +1 more source

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