Results 41 to 50 of about 52,861 (224)

Prevalence of halitosis and evaluation of etiological factors in a Turkish subpopulation [PDF]

open access: yes, 2016
Aim: The purpose of this study was to estimate the prevalence of halitosis in an adult Turkish subpopulation and to assess the relationship between halitosis and sociodemographics, self reported halitosis, etiological factors, by employing standardized ...
Güngör, Kahraman   +3 more
core   +2 more sources

Bioorthogonal Photoactivation of 2‐Nitrobenzyl Caged Doxorubicin Anticancer Prodrugs on Gold Nanostars

open access: yesAdvanced Materials, EarlyView.
Bioorthogonal chemistry was applied to intracellularly photoactivate Doxorubicin (Dox) using gold nanostars (AuNSt) and near‐infrared (NIR) light. Two prodrugs were used: one photoactivatable, masked with 2‐nitrobenzyl carbamate (proDox1) and another photolabile, masked with 2‐nitrobenzyl diol (proDox2), which was attached to the AuNSt surface.
Juan José Esteve‐Moreno   +15 more
wiley   +1 more source

Two-Degrees of Freedom and Variable Structure Controllers for Induction Motor Drives

open access: yesAdvances in Electrical and Computer Engineering, 2018
This paper presents a two-degrees-of-Freedom (2DOF) and variable structure control (VSC) schemes for induction motor (IM) drives. The designed VSC incorporates independent feedback and feedforward terms as 2DOF control principle.
ZAKY, M., TOUTI, E., AZAZI, H.
doaj   +1 more source

A Novel Adaptive Control Approach Based on Available Headroom of the VSC-HVDC for Enhancement of the AC Voltage Stability

open access: yesEnergies, 2021
Increasing offshore wind farms are rapidly installed and planned. However, this will pose a bottle neck challenge for long-distance transmission as well as inherent variation of their generating power outputs to the existing AC grid. VSC-HVDC links could
Duc Nguyen Huu
doaj   +1 more source

Analysis of harmonics in subsea power transmission cables used in VSC-HVDC transmission systems operating under steady-state conditions [PDF]

open access: yes, 2007
Subsea power cables are a critical component of a voltage-source converter-high-voltage direct current (VSC-HVDC) transmission system in any offshore electrical power scheme.
Bucknall, R.W.G., Chien, C.H.
core  

Variational and perturbative formulations of QM/MM free energy with mean-field embedding and its analytical gradients

open access: yes, 2008
Conventional quantum chemical solvation theories are based on the mean-field embedding approximation. That is, the electronic wavefunction is calculated in the presence of the mean field of the environment.
Yamamoto, Takeshi
core   +1 more source

Chirality Transfer via Orientational Order of Micellar Assemblies on Gold Nanocrystals

open access: yesAdvanced Materials, EarlyView.
A mechanism for chiral growth of Au nanocrystals mediated by orientational order of chiral micelles at seed surfaces is demonstrated. 3D electron microscopy and molecular dynamics simulations reveal how alignment of the micelles along crystal directions and torsion–orientation coupling govern chirality transfer, providing a framework to rationalize ...
Robin Girod   +8 more
wiley   +1 more source

Active and reactive power flow regulation for a grid connected vsc based on fuzzy controllers

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2013
Voltage Source Converters (VSC) are one of the most used converters in distributed generation application and HVDC systems, since a VSC can operate either as inverter or rectifier.
Nelson Díaz Aldana   +2 more
doaj   +1 more source

Multiuser Communication through Power Talk in DC MicroGrids

open access: yes, 2015
Power talk is a novel concept for communication among control units in MicroGrids (MGs), carried out without a dedicated modem, but by using power electronics that interface the common bus.
Angjelichinoski, Marko   +5 more
core   +1 more source

Multi-terminal HVDC grids with inertia mimicry capability [PDF]

open access: yes, 2016
The high-voltage multi-terminal dc (MTDC) systems are foreseen to experience an important development in the next years. Currently, they have appeared to be a prevailing technical and economical solution for harvesting offshore wind energy. In this study,
Gharehpetian, Gevorg B.   +4 more
core   +2 more sources

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