Results 11 to 20 of about 269,640 (278)

Breathable, self-healable, washable and durable all-fibrous triboelectric nanogenerator for wearable electronics

open access: yesMaterials Today Advances, 2023
Triboelectric nanogenerators (TENGs) have become a significant player in the expanding wearable electronics arena due to their high output voltage, diverse material compatibility, and straightforward design.
Tran Duc Khanh   +3 more
doaj   +1 more source

Effective coefficient of diffusion and permeability of firn at Dome C and Lock In, Antarctica, and of various snow types – estimates over the 100–850 kg m−3 density range [PDF]

open access: yesThe Cryosphere, 2022
Modeling air transport through the entire firn column of polar ice sheets is needed to interpret climate archives. To this end, different regressions have been proposed in the past to estimate the effective coefficient of diffusion and permeability of ...
N. Calonne   +5 more
doaj   +1 more source

Mixed Ionic-Electronic Conducting Membranes (MIEC) for Their Application in Membrane Reactors: A Review [PDF]

open access: yes, 2019
Mixed ionic-electronic conducting membranes have seen significant progress over the last 25 years as efficient ways to obtain oxygen separation from air and for their integration in chemical production systems where pure oxygen in small amounts is needed.
Arratibel Plazaola, Alba   +6 more
core   +10 more sources

Seasonal evolution of snow permeability under equi-temperature and temperature-gradient conditions [PDF]

open access: yesThe Cryosphere, 2013
The permeability (K) of snow to air flow affects the transfer of energy, water vapor and chemical species between the snow and the atmosphere. Yet today little is known about the temporal evolution of snow permeability as a function of metamorphic ...
F. Domine   +4 more
doaj   +1 more source

The comparative study of nursing pads by electrospun cellulose acetate, polyethylene oxide and thermoplastic polyurethane nanofibers [PDF]

open access: yes, 2018
This study summarizes the general information about nursing pads and novel electrospun nanofiber mats as potential component for nursing pads. It also compares electrospun thermoplastic polyurethane (TPU), cellulose acetate (CA) and polyethylene oxide ...
Akduman, Çiğdem   +2 more
core   +1 more source

Reducing concrete permeability by using natural pozzolans and reduced aggregate-to-pasteratio

open access: yesJournal of Civil Engineering and Management, 2015
Improved durability of concrete is mainly achieved with low-permeability. Permeability depends on permeability of the bulk cement paste (CP) and that of its interfacial transition zone (ITZ).
Fernando Bustos   +3 more
doaj   +1 more source

Emerging applications of aerogels in textiles

open access: yesPolymer Testing, 2022
The high specific surface areas and porosities of aerogels can impart desirable properties to textiles. The most established application of aerogels in textiles is the enhancement of thermal insulation and this has been the subject of some excellent ...
Steven J. McNeil, Honey Gupta
doaj   +1 more source

Gas diffusivity and permeability through the firn column at Summit, Greenland: measurements and comparison to microstructural properties [PDF]

open access: yesThe Cryosphere, 2014
The physical structure of polar firn plays a key role in the mechanisms by which glaciers and ice sheets preserve a natural archive of past atmospheric composition. This study presents the first measurements of gas diffusivity and permeability along with
A. C. Adolph, M. R. Albert
doaj   +1 more source

A rational approach to the harmonisation of the thermal properties of building materials [PDF]

open access: yes, 2009
The Energy Systems Research Unit at the University of Strathclyde in Glasgow was contracted by the Building Research Establishment to review existing data-sets of thermo-physical properties of building materials and devise vetting and conflation ...
Clarke, J.A., Yaneske, P.P.
core   +1 more source

On the cross-section of shaped fibers in the dry spinning process: Physical explanation by the geometric potential theory

open access: yesResults in Physics, 2019
Shaped fibers with irregular cross-section has large specific surface area, high air permeability and low pressure drop, and are widely used in cigarette filters. Cellulose acetate shaped fibers are produced by the dry spinning, and fibers’ cross-section
Zhanping Yang   +9 more
doaj   +1 more source

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