Results 51 to 60 of about 7,786,216 (339)

Power distribution investigation of a hexagonal diffused cellular indoor visible light communications system [PDF]

open access: yes, 2011
This paper presents a three dimensions (3D) model of optical power distribution in a diffused cellular indoor visible light communication (VLC) system.
Ghassemlooy, Zabih   +3 more
core  

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

open access: yesAdvanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong   +16 more
wiley   +1 more source

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida   +16 more
wiley   +1 more source

O problema da legitimidade e a limitação do poder régio na Hispania visigoda: o reinado de Ervígio (680-687)

open access: yesGerión, 2005
The confrontation between royal and nobiliarchic institutions throughout. Ancient times was constant, leading to a fragmentation of the monarch's centralizing authority.
Renan Frighetto
doaj  

Very-High-Energy $\gamma$-Ray Observations of the Blazar 1ES 2344+514 with VERITAS [PDF]

open access: yes, 2017
We present very-high-energy $\gamma$-ray observations of the BL Lac object 1ES 2344+514 taken by the Very Energetic Radiation Imaging Telescope Array System (VERITAS) between 2007 and 2015.
Allen, C.   +81 more
core   +1 more source

Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production

open access: yesAdvanced Functional Materials, EarlyView.
Recent developments have introduced bimetallic nanoparticles as effective cocatalysts for photocatalytic systems. This review explores the rapidly expanding research on bimetallic cocatalysts for photocatalytic production of hydrogen, emphasizing the creation of carrier‐selective contacts, localized surface plasmon resonance effects, methodologies for ...
Yufen Chen   +4 more
wiley   +1 more source

O governo protetor: a representação do poder político em cerimoniais régios portugueses (séc. XVIII-XIX) The protector government: the conception of sovereign in the Portuguese royal ceremonies (XVIII - XIX)

open access: yesVaria História, 2006
Ao inventariarmos as grandes celebrações da monarquia portuguesa, encontraremos algumas que são cerimoniais eminentemente religiosos. Dentre eles, há a procissão do Anjo da Guarda do Reino de Portugal (no terceiro domingo de julho), instituída no século ...
Eduardo Romero de Oliveira
doaj   +1 more source

Les parures des dieux d’après les archives royales de Mari (xixe-xviiie siècles av. J.-C.)

open access: yesCahiers Mondes Anciens, 2022
Among the impressive cuneiform documentation found on the site of Mari (Tell Ḥarīrī, Syria) are many texts called “from practice” (letters and accounting documents) that informs on manufacturing gods and their artefacts during the Amorite period (2004 ...
Manon Ramez
doaj   +1 more source

Governing New Jersey: Reflections on the Publication of a Revised and Expanded Edition of \u27The Governors of New Jersey\u27

open access: yes, 2015
New Jersey’s chief executive enjoys more authority than any but a handful of governors in the United States. Historically speaking, however, New Jersey’s governors exercised less influence than met the eye. In the colonial period few proprietary or royal
Birkner, Michael J.
core   +1 more source

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