Results 61 to 70 of about 208,381 (311)

An in vivo comparative study on ageing skin: bio-mimetic versus traditional approach to skin moisturisation [PDF]

open access: yes, 2014
Skin dryness is a common condition in elderly individuals. The two main mechanisms to cosmetically alleviate this state rely on the effects of humectants and occlusive substances, mostly in combination.
Grant-Ross, Peter   +3 more
core  

Towards more sustainable construction–application of superabsorbent polymers in cementitious matrices with reduced carbon footprint [PDF]

open access: yes, 2018
Construction industry is constantly searching for sustainable innovations to mitigate negative environmental impacts. Ground granulated blast-furnace slag (GGBS) is a well-known supplementary cementitious material which contributes to reduction of energy
Alekrish   +20 more
core   +4 more sources

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow   +9 more
wiley   +1 more source

A reaction-diffusion model for the hydration/setting of cement

open access: yes, 1995
We propose a heterogeneous reaction-diffusion model for the hydration and setting of cement. The model is based on diffusional ion transport and on cement specific chemical dissolution/precipitation reactions under spatial heterogeneous solid/liquid ...
A. Nonat   +10 more
core   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

open access: yesAdvanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner   +4 more
wiley   +1 more source

Rietveld Quantitative Phase Analysis of Oil Well Cement: in Situ Hydration Study at 150 Bars and 150 °C [PDF]

open access: yes, 2019
Oil and gas well cements are multimineral materials that hydrate under high pressure and temperature. Their overall reactivity at early ages is studied by a number of techniques including through the use of the consistometer.
Cuesta-Garcia, Ana Maria   +5 more
core   +6 more sources

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

open access: yesAdvanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich   +6 more
wiley   +1 more source

Effect of nano-SiO2 (NS) on dolomite concrete towards alkali silica reaction

open access: yesHBRC Journal, 2018
The aim of this work was to study the effect of nano silica on the physico-mechanical properties of concrete containing dolomite coarse aggregate and its effect on alkali silica reaction.
Salah Abd El-Ghany Abo El-Enein   +3 more
doaj   +1 more source

The effect of synthetic zeolite obtained from aluminium fluoride waste production on hardened cement paste [PDF]

open access: yes, 2015
The synthetic zeolite additive received from aluminium fluoride production waste changes the processes of cement hydration thus binding portlandite formed within hydration and making new cement hydration products such as calcium hydro aluminium C[3]AH[6]
Girskas, Giedrius   +1 more
core  

SEM image analysis in permeable recycled concretes with silica fume. A quantitative comparison of porosity and the ITZ [PDF]

open access: yes, 2019
Recycled aggregates (RA) from construction and demolition can be used in permeable concretes (PC), improving the environment. PCs have a significant porous network, their cement paste and the interaction between the paste and the RA establishing their ...
Arredondo Rea, Susana Paola   +4 more
core   +2 more sources

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