Results 101 to 110 of about 83,260 (295)
Uncertainties in Ground‐Based Visual Double Star Measures—II Accuracy of Measures
Astronomische Nachrichten, EarlyView.ABSTRACT Letchford and White 2025, Paper I, determined the uncertainties in ground‐based historic measures of double stars. In this paper, the accuracy of 26,205 ground‐based measures of 857 visual double stars, made since ∼$$ \sim $$1780, is determined relative to space‐based measures based on positions and proper motion from the HIPPARCOS (via ASCC ...
Graeme L. White, Roderick R. Letchford
wiley +1 more source
Medium size telescopes for the Cherenkov Telescope Array [PDF]
Ground-based and Airborne Telescopes VII, 2018 Published by SPIE, Bellingham, Wash.
openaire +3 more sources
Listening to Hong Kong children's perspectives through pretend play
British Educational Research Journal, EarlyView.Abstract Quality in early childhood education and care (ECEC) has become an increasing concern in recent years. The issue has been regularly discussed by different stakeholders. However, the rising concern regarding quality in ECEC has not seriously taken into account children's perspectives.
Suzannie K. Y. Leung
wiley +1 more source
Identification of Charged Particles with a Crystal Telescope [PDF]
, 1955 B. Wolfe, A. Silverman, J. W. DeWire
openalex +1 more source
Integrating Enzymes with Photoredox Catalysis for Conversion of Nitriles into Fluorinated Products
ChemCatChem, Accepted Article.Fluorinated molecules are widely used as pharmaceuticals, agrochemicals and as various functional materials. Traditional synthetic methods for introducing fluorine substituents into organic molecules involve deleterious chemicals and lack selectivity.
Stuart Angiolini +6 more
wiley +1 more source
Preliminary observations at 10-cm wavelength using the NRL 84-foot radio telescope [PDF]
, 1959 E. F. McClain, R. M. Sloanaker
openalex +1 more source
Local sensitivity analysis of a supercritical extraction model
The Canadian Journal of Chemical Engineering, EarlyView.Abstract This study investigates the process of chamomile oil extraction from chamomile flowers. A parameter‐distributed model, consisting of a set of partial differential equations, was used to describe the governing mass transfer phenomena between solid and fluid phases under supercritical conditions using carbon dioxide as the solvent.
Oliwer Sliczniuk, Pekka Oinas
wiley +1 more source
Stellar Photography with Small Telescopes without Driving-Clocks [PDF]
, 1896 Joseph Lunt
openalex +1 more source
Continuous Flow Block Copolymer Nanoaggregate Synthesis and Their Flow Dialysis Purification
Chemistry–Methods, EarlyView.This work details the methodology for the synthesis of block copolymer nanoparticles through continuous flow self‐assembly and purification via flow dialysis. Nanoaggregates are formed by mixing block copolymer solutions in THF with water, followed by dialysis to eliminate excess solvent.
Gayathri Dev Ammini +2 more
wiley +1 more source