Results 41 to 50 of about 7,252,354 (295)

Instability of (1+1) de sitter space in the presence of interacting fields [PDF]

open access: yes, 2010
Instabilities of two dimensional (1+1) de Sitter space induced by interacting fields are studied. As for the case of flat Minkowski space, several interacting fermion models can be translated into free boson ones and vice versa.
A. M. Polyakov   +3 more
core   +2 more sources

Survival Outcomes and Complications Among Canadian Children With Retinoblastoma: A Population‐Based Report From CYP‐C

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Retinoblastoma (RB) is the most common pediatric ocular cancer, yet population‐based data on survival and risk factors remain limited. This study aimed to describe survival in a large national RB cohort and identify predictors of death and complications.
Samuel Sassine   +14 more
wiley   +1 more source

Fabrication and Characterization of a Lead-Free Cesium Bismuth Iodide Perovskite through Antisolvent-Assisted Crystallization

open access: yesNanomaterials
Cesium bismuth iodide perovskite material offers good stability toward ambient conditions and has potential optoelectronic characteristics. However, wide bandgap, absorber surface roughness, and poor surface coverage with pinholes are among the key ...
Salma Maneno Masawa   +4 more
doaj   +1 more source

Reducing lead uptake by plants as a way to lead-free food

open access: yesEcotoxicology and Environmental Safety, 2023
In this research, an attempt was made to produce safe food from lead-contaminated soil. It was assumed that an increased amount of calcium (Ca) in plants would prevent them from lead (Pb) uptake. A new-generation agricultural product − an activator of Ca
Małgorzata Wierzbicka   +6 more
doaj   +1 more source

Personalized Selumetinib Dosing in Pediatric Neurofibromatosis Type 1: Insights From a Pilot Therapeutic Drug Monitoring Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Objective To evaluate selumetinib exposure using therapeutic drug monitoring (TDM) in pediatric patients with neurofibromatosis type 1 (NF1) and plexiform neurofibromas (PN), assess interpatient pharmacokinetic variability, and explore the relationship between drug exposure, clinical response, and adverse effects.
Janka Kovács   +8 more
wiley   +1 more source

Physical Properties of the K0.5Na0.5NbO3 Compound Doped With Li, La, and Ti in Concentration Lower Than 1.3 mol%

open access: yesInternational Journal of Ceramic Engineering & Science
Physical properties of the K0.5Na0.5NbO3 (KNN) system doped with less than 1.3 mol% of Li+, La3+, and Ti4+ ions were studied. These samples were prepared by a mixture of oxides and carbonates using high‐energy milling and solid‐state reactions.
C. Montero‐Tavera   +5 more
doaj   +1 more source

The Free-Will Postulate in Quantum Mechanics [PDF]

open access: yes, 2007
The so-called "free will axiom" is an essential ingredient in many discussions concerning hidden variables in quantum mechanics. In this paper we argue that "free will" can be defined in different ways.
Hooft, Gerard 't
core   +2 more sources

Strategic integration of electron transport layer for high-performance optimized lead-free double perovskite solar cells with temperature dependence

open access: yesJournal of Information Display
Perovskite solar cells (PSCs) are emerging as promising candidates for next-generation photovoltaic technologies, primarily due to their high efficiency and cost-effective manufacturing.
Fawad Aslam   +3 more
doaj   +1 more source

Radiative Phase Transitions and Casmir Effect Instabilities

open access: yes, 2004
Molecular quantum electrodynamics leads to photon frequency shifts and thus to changes in condensed matter free energies often called the Casimir effect.
A. A. Abrikosov   +11 more
core   +2 more sources

Molten hydroxide synthesis as an alternative to molten salt sythesis for producing K0.5Na0.5NbO3 lead free ceramics [PDF]

open access: yes, 2011
Lead-free piezoelectric materials have grown in importance through increased environmental concern and subsequent EU and worldwide legislation, with the aspiration to reduce the use of Pb-based materials in all sectors. Integration of the next generation
Bortolani, Francesca   +3 more
core   +1 more source

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