Results 51 to 60 of about 45,213 (186)

Long range polarization attraction between two different likely charged macroions

open access: yes, 2005
It is known that in a water solution with multivalent counterions (Z-ions), two likely charged macroions can attract each other due to correlations of Z-ions adsorbed on their surfaces.
B. I. Shklovskii   +6 more
core   +1 more source

Contact electrification in aerosolized monodispersed silica microspheres quantified using laser based velocimetry [PDF]

open access: yes, 2017
The contact electrification of aerosolized micro particles has been studied using a novel technique involving laser velocimetry. This has allowed the simultaneous determination of size and electrical charge of individual silica microspheres (in the range
Alois, Stefano   +3 more
core   +1 more source

Thundercloud electrification models in atmospheric electricity and meteorology [PDF]

open access: yes
A survey is presented of presently-available theoretical models. The models are classified into three main groups: (1) convection models, (2) precipitation models, and (3) general models. The strengths and weaknesses of the models, their dimensionalities
Parker, L. W.
core   +1 more source

Financing sustainable energy for all: pay-as-you-go vs. traditional solar finance approaches in Kenya [PDF]

open access: yes, 2014
This paper focuses on finance for Solar Home Systems (SHSs) in Kenya and asks to what extent emerging new finance approaches are likely to address the shortcomings of past approaches.
Byrne, Robert   +2 more
core  

Review on charging model of sand particles due to collisions

open access: yesTheoretical and Applied Mechanics Letters, 2020
: In this paper, the models describing the charge transfer between two sand particles due to collisions are reviewed. By comparing the experimental results and the calculated results by the models carried on an individual particle due to a single ...
Li Xie, Junjie Li, Yakui Liu
doaj   +1 more source

Construction of Triboelectric Series and Chirality Detection of Amino Acids Using Triboelectric Nanogenerator

open access: yesAdvanced Science
Triboelectrification necessitates a frictional interaction between two materials, and their contact electrification is characteristically based on the polarity variance in the triboelectric series.
Arnab Pal   +5 more
doaj   +1 more source

The effect of the electrification of sand on the interaction of friction in tribological contact [PDF]

open access: yesTransport Problems, 2011
In the article questions of the effectiveness of the presence of abrasive granular material in contact “wheel-rail” in the implementation of the optimal traction and its quantity on the surface of the rail.
Nikolai GORBUNOV   +3 more
doaj  

No. 30: Regionalizing Xenophobia? Citizen Attitudes to Immgration and Refugee Policy in Southern Africa [PDF]

open access: yes, 2004
The negative attitudes of South Africans towards non-citizens, migrants and refugees have been documented in several recent studies. Xenophobia has been officially recognized as a major problem by the state and steps have been taken by government and the
Crush, Jonathan, Pendleton, Wade
core   +1 more source

Contact-separation-induced self-recoverable mechanoluminescence of CaF2:Tb3+/PDMS elastomer

open access: yesNature Communications
Centrosymmetric-oxide/polydimethylsiloxane elastomers emit ultra-strong non-pre-irradiation mechanoluminescence under stress and are considered one of the most ideal mechanoluminescence materials.
Wenxiang Wang   +4 more
doaj   +1 more source

Exploring the Role of Cities in Electrifying Passenger Transportation [PDF]

open access: yes, 2020
Key Takeaways1. The electrification of passenger vehicles should be one part of a city’s transportation plan. Shifting from internal combustion engine vehicles to plug-in electric vehicles (PEVs) can improve urban air quality, reduce greenhouse gas ...
Allen, Jeff   +15 more
core  

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