Results 31 to 40 of about 17,628 (169)

Electrochromism and Electrochromic Windows

open access: yesActive and Passive Electronic Components, 1992
The properties of electrochromic thin film materials, i.e., those that can be reversibly colored by the passage of charge, are described. The application of some of these thin film compounds for the development of electrochromic windows is discussed.
G. Campet   +5 more
doaj   +1 more source

ELF in the Iranian education system: Exploring teacher trainers’ and pre-service/in-service English teachers’ attitudes

open access: yesCogent Education, 2019
The present study was aimed at exploring English teacher trainers’ and pre-service and in-service English teachers’ attitudes toward English as a lingua franca (ELF) in the Iranian education system.
Ahmad Asakereh   +2 more
doaj   +1 more source

Contradicciones sociales condicionadas a las operaciones de importación y exportación de mercancía en la Empresa CUBAMETAL. Social contradictions conditioned to the operations of import and export of merchandise in the CUBAMETAL Company

open access: yesSantiago, 2018
La actividad de toda empresa, está enmarcada en un entorno donde coexisten factores de toda índole: económicos, políticos, ecológicos, jurídicos, sociológicos, etc.
Erlin Armando Romero-Rodríguez
doaj  

Extremely Low-Frequency Electromagnetic Fields Promote In Vitro Neuronal Differentiation and Neurite Outgrowth of Embryonic Neural Stem Cells via Up-Regulating TRPC1. [PDF]

open access: yesPLoS ONE, 2016
Exposure to extremely low-frequency electromagnetic fields (ELF-EMFs) can enhance hippocampal neurogenesis in adult mice. However, little is focused on the effects of ELF-EMFs on embryonic neurogenesis.
Qinlong Ma   +18 more
doaj   +1 more source

Distinct epidermal keratinocytes respond to extremely low-frequency electromagnetic fields differently. [PDF]

open access: yesPLoS ONE, 2014
Following an increase in the use of electric appliances that can generate 50 or 60 Hz electromagnetic fields, concerns have intensified regarding the biological effects of extremely low-frequency electromagnetic fields (ELF-EMFs) on human health ...
Chao-Ying Huang   +6 more
doaj   +1 more source

Extremely low-frequency electromagnetic fields cause G1 phase arrest through the activation of the ATM-Chk2-p21 pathway. [PDF]

open access: yesPLoS ONE, 2014
In daily life, humans are exposed to the extremely low-frequency electromagnetic fields (ELF-EMFs) generated by electric appliances, and public concern is increasing regarding the biological effects of such exposure.
Chao-Ying Huang   +7 more
doaj   +1 more source

Extremely low-frequency magnetic exposure appears to have no effect on pathogenesis of Alzheimer's disease in aluminum-overloaded rat. [PDF]

open access: yesPLoS ONE, 2013
OBJECTIVE: Extremely low-frequency magnetic field (ELF-MF) has been reported to be of potential pathogenetic relevance to Alzheimer's disease (AD) for years. However, evidence confirming this function remains inconclusive.
Cheng Zhang   +4 more
doaj   +1 more source

Environmental evaluation and employee’s exposure of a thermal power plant with extremely low frequency magnetic fields

open access: yesSalāmat-i kār-i Īrān, 2015
Background and aims: Extremely low frequency magnetic field (ELF) is part of Spectrum of electromagnetic waves with range 30 to 300 Hz. The average magnetic field exposures in the workplace have been found to be higher in “electrical occupations” than in
M Monazzam Monazzam   +5 more
doaj  

Analysing digital communication: discursive features, rhetorical structure and the use of English as a lingua franca in travel blog posts

open access: yesJournal of English Studies, 2018
The digital world is currently offering new modes of communication that allow multiple opportunities for a more immediate and dialogical interaction. Within it, the blog shows up as a very resourceful and sophisticated genre where different sub-genres ...
Daniel Pascual
doaj   +1 more source

Effects of Extremely Low Frequency Electromagnetic Fields and Simultaneous Treatment with Allium Cepa on Biochemical Parameters and Ultrastructure of Ovarian Tissues of Rats [PDF]

open access: yesIranian Journal of Medical Physics, 2019
Introduction: This study investigated the effects of extremely low frequency electromagnetic fields (ELF-EMF) (50 Hz, 3 mT) on biochemical parameters of rats’ ovarian tissues and the impact of Allium cepa on the reduction of potential adverse influences ...
Elham Mansouri   +4 more
doaj   +1 more source

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