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Now showing items 2931-2940 of 5046
Non-Linear Optical Properties of Er3+–Yb3+-Doped NaGdF4 Nanostructured Glass–Ceramics
(MDPI, 2020-07-21)
Transparent oxyfluoride glass–ceramics containing NaGdF4 nanocrystals were prepared by melt-quenching and doped with Er3+ (0.5 mol%) and different amounts of Yb3+ (0–2 mol%). The selected dopant concentration the crystallization ...
High Thyrotropin Is Critical for Cardiac Electrical Remodeling and Arrhythmia Vulnerability in Hypothyroidism
(Mary Ann Liebert, 2019-07-17)
Background: Hypothyroidism, the most common endocrine disease, induces cardiac electrical remodeling that creates a substrate for ventricular arrhythmias. Recent studies report that high thyrotropin (TSH) levels are related ...
Transparent Sol-Gel Oxyfluoride Glass-Ceramics with High Crystalline Fraction and Study of RE Incorporation
(MDPI, 2019-04-03)
Transparent oxyfluoride glass-ceramic films and self-supported layers with composition 80SiO₂-20LaF₃ doped with Er3+ have been successfully synthesized by sol-gel process for the first time. Crack-free films and self-supported ...
A New Sol-Gel Route Towards Nd3+-doped SiO2-LaF3 Glass-Ceramics for Photonic Applications
(Royal Society Of Chemistry, 2020-12-01)
Glass-ceramic materials with composition 0.9Nd(3+)-80SiO(2)-20LaF(3) were successfully obtained and further heat-treated at 450 degrees C for 6 h. Stable and homogeneous LaF3 nanoparticle suspensions with and without Nd3+ ...
Introducción (Dossier Augusto. Balance historiográfico)
(Universidad Carlos III, 2017)
Con ocasión del Bimilenario de su muerte en 2014, se planteó el congreso «Augusto 2014. Balance historiográfico», celebrado en la Universidad Carlos III de Madrid en diciembre de aquel año. La intención de los organizadores ...
Seasonal Blowfly Distribution and Abundance in Fragmented Landscapes. Is It Useful in Forensic Inference about Where a Corpse Has Been Decaying?
(Public Library Science, 2014-06-11)
Blowflies are insects of forensic interest as they may indicate characteristics of the environment where a body has been laying prior to the discovery. In order to estimate changes in community related to landscape and to ...
MACsec Layer 2 Security in HSR Rings in Substation Automation Systems
(MDPI, 2017-01-31)
The smart-grid concept takes the communications from the enclosed and protected environment of a substation to the wider city or nationwide area. In this environment, cyber security takes a key role in order to secure the ...
Optimally robust shortcuts to population inversion in two-level quantum systems
(IOP Publishing LTD, 2012-09-21)
We examine the stability versus different types of perturbations of recently proposed shortcuts to adiabaticity to speed up the population inversion of a two-level quantum system. We find the optimally robust processes by ...
Mini Wind Harvester and a Low Power Three-Phase AC/DC Converter to Power IoT Devices: Analysis, Simulation, Test and Design
(MDPI, 2020-09-11)
Wind energy harvesting is a widespread mature technology employed to collect energy, but it is also suitable, and not yet fully exploited at small scale, for powering low power electronic systems such as Internet of Things ...
How Do People Move Around? National Data on Transport Modal Shares for 131 Countries
(MDPI, 2020-06-18)
The COVID-19 pandemic has brought global mobility into the spotlight, with well over 100 countries having instituted either a full or partial lockdown by April 2020. Reduced mobility, whilst causing social and economic ...