Results 21 to 30 of about 92,087 (221)

Classifying Superconductivity in ThH-ThD Superhydrides [PDF]

open access: yesMaterials Research Express, 2019
Satterthwaite and Toepke (1970 Phys. Rev. Lett. 25 741) discovered that Th4H15-Th4D15 superhydrides exhibit superconductivity and have no isotope effect. The latter is fundamental contradiction with the concept of electron-phonon mediated superconductivity of Bardeen-Cooper-Schrieffer (BCS) theory.
E F Talantsev, R C Mataira
openaire   +5 more sources

Biomimetics: teaching the tools of the trade

open access: yesFEBS Open Bio, 2020
Biomimetics is a known innovation paradigm of the twenty‐first century with significant impact on science, society, economy, and challenges of sustainability.
Kristina Wanieck   +3 more
doaj   +1 more source

Boost Converter Based 3-phase AC-AC Active Tracking Voltage Regulator Controlled by a Robust Hybrid Control Method

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
In this study, a switch-mode three-phase active tracking AC-AC voltage regulator based on the boost converter is proposed with a moderate number of active and passive elements used in the topology.
Felix Hımmelstoss, Faruk Yalçın
doaj   +1 more source

Magnetic ordering and its influence on X‐ray spectroscopies

open access: yesMajor Reference Works, Page 163-168., 2023
International Tables for Crystallography is the definitive resource and reference work for crystallography and structural science.

Each of the eight volumes in the series contains articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the ...
Gerrit van der Laan   +3 more
wiley  

+2 more sources

Performance Analysis of the Slip Power Recovery Induction Motor Drive System Under Unbalance Supply Voltages

open access: yesAdvances in Electrical and Electronic Engineering, 2021
This paper develops a mathematical model for analyzing the steady-state performance of the Slip Power Recovery Induction Motor Drive System (SPRIMDS) which operates under unbalance supply voltage conditions.
Hilmi Fadhil Ameen, Fadhil Toufick Aula
doaj   +1 more source

Grafting luminescent metal-organic species into mesoporous MCM-41 silica from europium(III)tetramethylheptanedionate, Eu(thd)3 [PDF]

open access: yes, 2005
Mixed systems with Eu(III) β-diketonates as optically active guest species, and mesoporous silicas MCM-41 as a host matrix have been investigated. The grafting of europium(III) onto the inner walls of unmodified MCM-41 has been achieved starting from Eu ...
Brunel, Daniel   +4 more
core   +2 more sources

Performance Analysis of Three Phase Cascaded Multilevel Inverter (CMLI) for Induction Motor Drives [PDF]

open access: yesEngineering and Technology Journal, 2013
Traditional high-frequency pulse width modulation (PWM) inverters for motor drives have several problems associated with their high switching frequency which produces high voltage change (dv/dt) rates.
Shatha k. Baqir
doaj   +1 more source

Transanal Hemorrhoidal Dearterialization With Doppler Arterial Identification Versus Classic Hemorrhoidectomy: A Retrospective Analysis of 270 Patients [PDF]

open access: yesAnnals of Coloproctology, 2019
Purpose Despite the minimally invasive nature of transanal hemorrhoidal dearterialization (THD) with Doppler arterial identification procedures, hemorrhoidectomy is still considered the gold standard procedure for hemorrhoidal disease.
Vincenzo Consalvo   +2 more
doaj   +1 more source

Two-Stage Control for Small-Signal Modeling and Power Conditioning of Grid-‎Connected Quasi-Z-Source Inverter with LCL Filter for Photovoltaic ‎Generation ‎ [PDF]

open access: yesJournal of Operation and Automation in Power Engineering, 2021
Grid-connected inverter-based photovoltaic (PV) systems play an important role in Distributed Power Generation (DPG). For this application, quasi impedance source inverter is very suitable due to its ability to increase or decrease the output voltage of ...
F. Aalizadeh   +3 more
doaj   +1 more source

Binding of αvβ3 Integrin-Specific Radiotracers Is Modulated by Both Integrin Expression Level and Activation Status [PDF]

open access: yes, 2017
Open Access via Springer Compact Agreement Acknowledgements We are very grateful to Prof. Calderwood (Yale University, USA) for providing the THD DNA construct, Dr.
Andriu, Alexandra   +5 more
core   +1 more source

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