Results 211 to 220 of about 1,102,528 (387)

The horizontal and vertical semi-diameters of the Sun observed at the Cape of Good Hope (1834 - 1887) and Paris (1837 - 1906): A report on work in progress [PDF]

open access: yes
Cape and Paris meridian observations of the solar limbs which permit an estimate to be made of the solar semi-diameter were surveyed, sampled, and compared with Greenwich and U.S. Naval Observatory observations.
Messina, D., Smith, C.
core   +1 more source

Compressibility Function and Speed of Sound in the Non‐Commutative Quantum Hadrodynamics Type‐I Model for Neutron Stars

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT We investigate the effects of a minimal measurable length on neutron stars, within the quantum hadrodynamics (QHD‐I) model modified by the Generalized Uncertainty Principle (GUP). Working in a deformed Poisson algebra framework, we incorporate GUP effects via a time‐invariant transformation of the phase space volume, effectively reducing the ...
João Gabriel Galli Gimenez   +2 more
wiley   +1 more source

Impact of Microstructural Properties on Ionic and Heat Transport in NaSICON Glass Ceramics

open access: yesBatteries &Supercaps, EarlyView.
With glass ceramics made from NaSICON materials, everything is about microstructure and glass phase content. Their influence is investigated with regard to the transport properties, both for ionic and thermal conductivity. Small, nm‐sized tubular porosity is regarded as the transport path of Na2O depletion during sintering and as an additional ...
Frank Tietz   +10 more
wiley   +1 more source

HIV viraemia and mother‐to‐child transmission risk after antiretroviral therapy initiation in pregnancy in Cape Town, South Africa

open access: yesHIV Medicine, 2017
L. Myer   +8 more
semanticscholar   +1 more source

Exploring quinolinone–chalcones: Synthesis, antioxidant potential and industrial applications in biofuels

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biofuels undergo oxidative degradation, which reduces their storage stability and efficiency, hindering their large‐scale adoption and integration into the global energy matrix. To address this issue, we synthesized and characterized four novel quinolinone–chalcone derivatives (substituted with Br, Cl, OCH3 and OCH2CH3) as potential ...
Vitor S. Duarte   +8 more
wiley   +1 more source

Nanocomposite hybrids of cashew apple bagasse‐derived lignin with photoprotective properties for sunscreen applications

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Prolonged exposure to ultraviolet (UV) radiation can cause significant damage to the skin and immune system. There has consequently been an increasing emphasis on the development of biodegradable and sustainable materials that offer UV protection, reflecting increased awareness of health and disease prevention. Due to its high concentration of
Tigressa Helena Soares Rodrigues   +4 more
wiley   +1 more source

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