Results 41 to 50 of about 13,924 (166)

Potentiometric Sensors for Pr(III) Based on N-N᾽o-Phenylene-bis(salicylideneimine) Using Epoxy Resin and PVC as Binding Materials

open access: yesE-Journal of Chemistry, 2011
Praseodymium(III) ion selective electrodes have been prepared using N-N᾽o-phenylene-bis(salicylideneimine) as a suitable electro-active material. Several membranes comprising of varying compositions of electro-active material with epoxy resin and ...
K. Sharma Harish   +2 more
doaj   +1 more source

Investigation of the Effect of Electrokinetic Process on the Seepage Reduction, Increase of Failure Time, and Decrease of Seepage Level in the Clay Core of Earth Dams [PDF]

open access: yesعلوم آب و خاک, 2023
The present study investigated the related parameters to decrease the seepage through homogenous and heterogeneous earth dams by employing experimental models and solutions.
S. salehi, A. Mahmoodi Moghadam
doaj  

A review on system and materials for aqueous flexible metal–air batteries

open access: yesCarbon Energy, 2023
The exploration of aqueous flexible metal–air batteries with high energy density and durability has attracted many research efforts with the demand for portable and wearable electronic devices.
Lixue Jiang, Xiaoxuan Luo, Da‐Wei Wang
doaj   +1 more source

Método hidrometalúrgico para reciclagem de metais terras raras, cobalto, níquel, ferro e manganês de eletrodos negativos de baterias exauridas de Ni-MH de telefone celular

open access: yesQuímica Nova, 2014
A hydrometallurgical method for the recovery of rare earth metals, cobalt, nickel, iron, and manganese from the negative electrodes of spent Ni - MH mobile phone batteries was developed. The rare earth compounds were obtained by chemical precipitation at
Vinicius Emmanuel de Oliveira dos Santos   +3 more
doaj   +1 more source

Corrosion rate determination of rare-earth Mg alloys in a Na2SO4 solution by electrochemical measurements and inductive coupled plasma-optical emission spectroscopy

open access: yesJournal of Magnesium and Alloys, 2019
The corrosion resistance of three Mg alloys containing rare-earth elements (WE43, EV31 and ZE41) was studied and compared to that of two Mg– Al alloys (AZ31 and AZ91) and of pure Mg (99.95 wt.%).
Samuel Leleu   +3 more
doaj   +1 more source

Obtaining memristor elements based on non-noble materials

open access: yesMATEC Web of Conferences, 2018
This study is aimed at creating memristor elements based on TiO2/TiOx layers with electrodes that do not contain noble and rare-earth metals, by vacuum deposition method.
Troyan Pavel   +2 more
doaj   +2 more sources

Research into action of surface soil moistening, drying or freezing on electrical characteristics of grounding device

open access: yesElectrical engineering & Electromechanics, 2014
The analysis made has shown expediency of modernization rather than reconstruction of earth electrodes, after inspection of long operating substations grounding grids, via building a two-level structure.
I.V. Nizhevskiy, V.I. Nizhevskiy
doaj  

Electric Signals on and under the Ground Surface Induced by Seismic Waves

open access: yesInternational Journal of Geophysics, 2012
We constructed three observation sites in northeastern Japan (Honjo, Kyowa, and Sennan) with condenser-type large plate electrodes (4 × 4 m2) as sensors supported 4 m above the ground and with pairs of reference electrodes buried vertically at 0.5 m and ...
Akihiro Takeuchi   +2 more
doaj   +1 more source

Comparison between pipe-type grounding electrode systems installed vertically versus horizontally [PDF]

open access: yesEPJ Web of Conferences
The application of optimality criteria to the sizing of earth grounding systems (EGR) employing pipe-type electrodes has led to the accumulation of a substantial body of significant data [1,2], enabling a comparison between two design alternatives ...
Beleiu Horia   +3 more
doaj   +1 more source

A fast method to estimate body capacitance to ground at mid frequencies

open access: yesJournal of Electrical Bioimpedance, 2015
Impedance measurements that involve the human body are affected by the capacitance between the body and earth ground. This paper describes a fast method to estimate that capacitance at 10 kHz, which is valid for impedance analyzers intended to measure ...
Aliau-Bonet Carles, Pallas-Areny Ramon
doaj   +1 more source

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