Results 221 to 230 of about 5,709 (297)

A solar prominence

open access: yesThe Astronomical Journal, 1895
openaire   +1 more source

Green Fuel Combustion Synthesis of CeO2 and Ag/CeO2 Nanoparticles for Photocatalytic and Antibacterial Applications

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Silver‐doped cerium oxide nanoparticles (Ag/CeO2 NPs) were synthesized using Ricinus communis seed extract as a bio‐derived fuel in a solution combustion method. The combustion reaction, carried out at 450°C with AgNO3 and (NH4)2[Ce (NO3)6] as metal precursors, produced CeO2 and Ag/CeO2 NPs.
T. N. Ravishankar   +5 more
wiley   +1 more source

Butterfly Diagram and Other Properties of Plage Areas from Kodaikanal Ca ii K Photographs Covering 1904 - 2007. [PDF]

open access: yesSol Phys
Jha BK   +6 more
europepmc   +1 more source

Metal‐CO2 Batteries: By‐Product Challenges and Practical Pathways for Low CO2 Concentration Environment

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Metal‐CO2 batteries have recently emerged as an intriguing class of energy storage and conversion devices that simultaneously utilize and manage carbon dioxide. Originating from studies of CO2 contamination in metal‐air batteries, these systems have evolved into a distinct research direction, offering insights into CO2 electrochemistry and its
Sungmin Choi, Sooyeon Seok, Changmin Kim
wiley   +1 more source

Long-term Solar Activity Studies using Microwave Imaging Observations and Prediction for Cycle 25. [PDF]

open access: yesJ Atmos Sol Terr Phys, 2018
Gopalswamy N   +3 more
europepmc   +1 more source

First‐Principles Investigation of the Electronic, Phonon, Optical, and Elastic Properties of AgBiTeSe

open access: yesAdvanced Physics Research, EarlyView.
This study presents a first‐principles investigation of the electronic, vibrational, optical, and elastic properties of AgBiTeSe. The results highlight its metallic behavior, dynamic stability, strong optical absorption, and promising thermoelectric potential.
Nilufer Yesmin Tanisa   +3 more
wiley   +1 more source

Coronal dimmings and what they tell us about solar and stellar coronal mass ejections. [PDF]

open access: yesLiving Rev Sol Phys
Veronig AM   +12 more
europepmc   +1 more source

Dr. Hans Kohn and the political takeover of the Berlin Medical Society by the National Socialist regime in 1933

open access: yesThe Anatomical Record, EarlyView.
Abstract To solidify their power over society, totalitarian regimes will usually eliminate any dissent, any perceived threats early on. These threats include not only political enemies but also educated and independent segments of society, such as professional associations.
Michael Hortsch
wiley   +1 more source

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