Results 141 to 150 of about 148,709 (308)

Investigation of protective devices for DC grids

open access: yes, 2015
Consulta en la Biblioteca ETSI Industriales (Riunet)[EN] The quick operability of the HVDC technology on the power transmission has allowed the integration of multiple energy sources such as distributed generations into the grid.
Ferrer Monzó, Miguel
core  

Protective earth resistance in electromedical devices of protection class I

open access: yes, 2021
In dieser Arbeit ist die Messung des Schutzleiterwiderstandes gemäß der ÖVE/ÖNORM EN 62353:2015 im Detail erläutert. Die Aufgaben des Schutzleiters sind ebenfalls beschrieben.
Seehra, Sikandar
core  

3D Printing Innovations in Polymeric Porous and Patterned Architecture

open access: yesAdvanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil   +13 more
wiley   +1 more source

Allocation of protective devices in distribution circuits using nonlinear programming models and genetic algorithms

open access: yes, 2004
The optimized allocation of protective devices in strategic points of the circuit improves the quality of the energy supply and the system reliability index.
Mantovani, JRS   +2 more
core   +1 more source

Self‐Adaptive Anhydrous Passivation Mitigates Open‐Circuit Voltage Loss in Pb‐Sn Mixed Perovskite Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
In this report, a self‐adaptive anhydrous passivation strategy is introduced by incorporating trimellitic anhydride (TMAH) into the perovskite precursor. In situ hydrolysis of TMAH yields trimellitic acid (TMA); ‐C═O/‐COO− groups of TMAH/TMA form a chelate with undercoordinated Pb2+/Sn2+, regulate nucleation, promote (100) orientation, passivate ...
Md. Ataur Rahman   +6 more
wiley   +1 more source

Visual evaluation of smoke-protective devices.

open access: yes
This study was designed to determine the visual characteristics of smoke-protective devices for flight deck crews. Visual measurements were made on five male subjects, who ranged in age from 35 to 54, while they were wearing each of the 26 devices tested.
Civil Aeromedical Institute   +2 more
core  

A Rapidly Deployable Test Suite for Respiratory Protective Devices in the COVID-19 Pandemic. [PDF]

open access: yesAppl Biosaf, 2020
Blad T   +6 more
europepmc   +1 more source

Engineering Pendant Group Chemistry to Control Hydrophilicity and Oxidative Degradation of Thioketal‐Based Biomaterials

open access: yesAdvanced Functional Materials, EarlyView.
Thioketal (TK) polymers are promising biomaterials due to their selective biodegradation by reactive oxygen species (ROS), but they respond slowly to physiologic doses of ROS. Here, the TK bond's pendant groups are modified to enhance the degradation of TK‐based implants both in vitro and in vivo.
Karina A. Bruce   +6 more
wiley   +1 more source

Invisible Polymer Walls Enhance Reorientational Optical Nonlinearity in Oligothiophene‐Doped Liquid Crystals

open access: yesAdvanced Functional Materials, EarlyView.
The polymer wall stabilized dye‐doped liquid crystals (PWLCs) enhance the sensitivity of photoinduced molecular reorientation in dye‐doped LC systems. The PWLC with an invisible polymer wall successfully reduces the threshold intensity and functions as an optical limiter under the incidence of low intensity light laser source.
Junki Yokota   +6 more
wiley   +1 more source

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