Results 21 to 30 of about 34,938 (164)

Self‐Driven Humidity Regulation via Hygroscopic Salt Cycling

open access: yesAggregate, Volume 7, Issue 4, April 2026.
A series of antimony‐based inorganic‐organic metal halides with gradient water adsorption capacities is designed. The controlled release of the hygroscopic salt ACl from them during adsorption and re‐capture of ACl during the desorption process is achieved. The chemical bonds' reorganization and energy release enable the self‐driven desorption.
Yi Liu   +9 more
wiley   +1 more source

A Possible Solution to the Mystery of the ANITA Anomalous Events

open access: yesAnnalen der Physik, Volume 538, Issue 4, April 2026.
In 2006 and 2014, the Antarctic Impulsive Transient Antenna (ANITA), a balloon‐borne radio observatory flying over Antarctica, detected two strange upward‐going radio pulse events that have not yet been explained by our current understanding of physics.
Massimo Villata
wiley   +1 more source

Supernova 1988A: another clumped supernova [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1991
The evolution of the forbidden multiplet (1F) oxygen lines in the optical spectrum of SN 1988A is used to determine the evolution of the optical depth in those transitions which in turn can be used to derive the number density of oxygen in the ejecta.
openaire   +1 more source

Establishing Indium in Frustrated Lewis Pair Chemistry: From Synthesis to Catalytic Applications

open access: yesChemistryEurope, Volume 4, Issue 4, April 2026.
Not that hard: The effects of chemical hardness of the soft FLP tBu2InCH2PtBu2 and its pyridine‐adduct tBu2In(py)CH2PtBu2 were examined in adduct formation reactions toward H2, CO2, and CS2. The frustrated Lewis pair shows catalytic activity in the reduction of CO2 with pinacolborane.
Daniel N. Heuer   +6 more
wiley   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

open access: yesFortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Kaniadakis Holographic Dark Energy Behavior in f(Q) Theory

open access: yesFortschritte der Physik, Volume 74, Issue 4, April 2026.
ABSTRACT In this study, the cosmological behavior of the Kaniadakis holographic dark energy model is investigated under the f(Q)$f(Q)$ theory within the framework of a flat Friedmann–Robertson–Walker (FRW) universe. The generalized holographic energy density based on Kaniadakis entropy is modeled using the Hubble horizon infrared cutoff scale, and the ...
Sinem Kalkan, Can Aktaş
wiley   +1 more source

Supernova 1604, Kepler’s Supernova, and Its Remnant [PDF]

open access: yes, 2016
Supernova 1604 is the last Galactic supernova for which historical records exist. Johannes Kepler's name is attached to it, as he published a detailed account of the observations made by himself and European colleagues. Supernova 1604 was very likely a Type Ia supernova, which exploded 350 pc to 750 pc above the Galactic plane.
openaire   +4 more sources

Observation of Forbush Decreases and GLE‐74 Recorded During Ground‐Level Neutron Monitoring Survey From Various Sites

open access: yesSpace Weather, Volume 24, Issue 4, April 2026.
Abstract Ground‐level neutron monitors (NMs) are essential tools for monitoring space weather events, including the detection and alerting of ground‐level enhancement (GLE) events. This study presents findings from a neutron monitoring survey using two compact N50L neutron slab‐based subsystems deployed across various field sites in the United Kingdom (
D. C. Mashao   +11 more
wiley   +1 more source

The Ammann–Kramer–Neri tiling model of a P‐ZnMgEr Bergman‐type quasicrystal based on in‐house X‐ray diffraction

open access: yesActa Crystallographica Section B, Volume 82, Issue 2, Page 175-185, April 2026.
A structural solution is presented of a primitive icosahedral ZnMgEr quasicrystal representing the Bergman‐type family. The structure model is based on atomic decoration of the Ammann–Kramer–Neri tiling.This study presents the atomic structure solution of a primitive icosahedral Zn70.83Mg20.31Er8.86 quasicrystal using in‐house X‐ray diffraction and the
Ireneusz Buganski   +7 more
wiley   +1 more source

Incidence of severe COVID‐19 in patients with chronic lymphocytic leukaemia or indolent B‐cell non‐Hodgkin lymphoma who received vaccination and pre‐exposure prophylaxis with tixagevimab and cilgavimab in Italy: An observational study by the GIMEMA working party on chronic lymphoproliferative disorders and by the Fondazione Italiana Linfomi

open access: yes
British Journal of Haematology, EarlyView.
Gian Matteo Rigolin   +25 more
wiley   +1 more source

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