Results 51 to 60 of about 1,042,889 (288)

Improved theory of helium fine structure

open access: yes, 2006
Improved theoretical predictions for the fine-structure splitting of $2^3P_J$ levels in helium are obtained by the calculation of contributions of order $\alpha^5 Ry$.
Pachucki, Krzysztof
core   +1 more source

Thermal "portrait" of sportsmen with different aerobic capacity [PDF]

open access: yes, 2010
Nowadays thermography technique is widely used in clinical and diagnostic procedures. Thermal “portrait” fixed by infra-red thermotracer in rest conditions is characterized by mosaic temperature distribution on skin surface and large individual ...
Akimov, E. B.   +6 more
core   +3 more sources

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

open access: yesAdvanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao   +5 more
wiley   +1 more source

Higher-Order Hamiltonian for Circuits with (α,β) Elements

open access: yesEntropy, 2020
The paper studies the construction of the Hamiltonian for circuits built from the (α,β) elements of Chua’s periodic table. It starts from the Lagrange function, whose existence is limited to Σ-circuits, i.e., circuits built exclusively from elements ...
Zdeněk Biolek   +3 more
doaj   +1 more source

Meeting and greeting new students [PDF]

open access: yes, 2006
The introduction of self- service, and new layouts in complex buildings, prompted the creation of a service to welcome new students at Leeds Met as they used the library for the first ...
Finlay, HJ, Young, D
core  

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Organometallic Precursor‐Induced Gradient Architecture on Multilayer Nanoporous Graphene Membranes for Precise Organic Solvent Nanofiltration

open access: yesAdvanced Functional Materials, EarlyView.
Alumina growth narrows surface pores and seals non‐selective defects, enhancing selectivity while preserving the nanoporous graphene architecture. Additionally, the deposition enables gradient‐controlled structural modification, with intergrown alumina acting as a physical cross‐linker that stabilizes the laminar structure.
Junhyeok Kang   +8 more
wiley   +1 more source

Flow injection determination of readily assimilable nitrogen compounds during vinification [PDF]

open access: yes, 2002
A flow injection method for the determination of readily assimilable nitrogen (r.a.n.), i.e. ammonium and aminated nitrogen, is reported. The difference in pH of the sample in the presence and absence of formaldehyde, which blocks the amino function ...
Crowell   +8 more
core   +1 more source

Mapping the Cerebral Organoid Landscape: A Systematic Review of Preclinical 3D Models in Neuroscience

open access: yesAdvanced Healthcare Materials, EarlyView.
Cerebral organoids are transforming brain research, yet the field remains fragmented. This comprehensive systematic review maps 738 studies published between 2014 and 2024 to uncover trends, gaps, and opportunities across neuroscience. Introducing OrganoidMap—an interactive, open‐access platform to explore and compare models—this work enables ...
Anna Wolfram   +10 more
wiley   +1 more source

The RF Energy Harvesting Antennas Operating in Commercially Deployed Frequency Bands: A Comparative Study

open access: yesInternational Journal of Antennas and Propagation, 2016
This paper deals with suitable antennas for energy harvesting, which is a growing research field due to the utilization of nowadays ubiquitous and abundant RF energy.
M. Mrnka   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy