Results 101 to 110 of about 1,029,754 (340)

From Ancient Techniques to Modern Solutions: In Situ Synthesis of C‐S‐H for Sandstone Conservation

open access: yesAdvanced Science, EarlyView.
Herein, this work presents a paleo‐inspired approach to synthesizing and optimizing C‐S‐H‐based grouting mortars for conserving the sandstone of Beishan Grottoes, Dazu Rock Carvings, China. By achieving an optimal recipe compatible with natural sandstone, this work demonstrates the pivotal role of hydrogen bonding in the adhesion between C‐S‐H mortars ...
Mengjun Jia   +9 more
wiley   +1 more source

Energy‐Efficient Fabrication of Biomimetic Materials for Sustainable Infrastructure Applications

open access: yesAdvanced Science, EarlyView.
Inspired by nacre's “brick‐and‐mortar” structure, this work develops an energy‐efficient approach that utilizes ice‐templating technology as the structure framework and carbon mineralization for rapid CaCO3 production, resulting in a strong yet tough carbon mineralized material (CMM) under mild conditions while also fixing CO2.
Jingze Chen   +4 more
wiley   +1 more source

Mortar and concrete based on calcium sulphate binders [PDF]

open access: yes, 2006
In this study both hemi-hydrate and anhydrite are tested as calcium sulphate binders for structural mortar and concrete. The advantage of using calcium sulphates instead of cement as a binder is the fact that the production of calcium sulphate is more ...
Bakker, J.J.F., Brouwers, H.J.H.
core   +1 more source

Microleakage of orthodontic band cement at the cement-enamel and cement-band interfaces

open access: yesAmerican Journal of Orthodontics and Dentofacial Orthopedics, 2010
Our objective was to determine and compare microleakage patterns of conventional glass ionomer cement (GIC), resin modified GIC (RMGIC), and polyacid-modified composite for band cementation.Sixty freshly extracted third molars were randomly divided into 3 groups of 20 teeth each.
Uysal, Tancan   +3 more
openaire   +4 more sources

Recyclable Li‐Metal Battery Electrolytes via In Situ Cyclic Carbonate Polymerization

open access: yesAdvanced Science, EarlyView.
A recyclable polycarbonate electrolyte is synthesized in situ in a lithium‐metal battery. Excellent cell performance is obtained owing to its high conductivity and (electro)chemical stability. The electrolyte is recovered after extended battery cycling, chemically recycled back to monomer, and repolymerized, obtaining comparable cell performance.
Hui Gao   +13 more
wiley   +1 more source

Critical Electrochemistry Technologies Applicable in Space Exploration

open access: yesAdvanced Science, EarlyView.
The available resources in space and discuss the application scenarios and challenges of electrochemical methods in four critical domains is analyzed: metallurgical processing of mineral resources, water resources utilization, carbon cycle management in extraterrestrial habitats, and electrical energy storage.
Ruisi Xu   +4 more
wiley   +1 more source

Potential of Orange Peel Ash as a Cement Replacement Material [PDF]

open access: yes, 2019
The potential of Orange peel ash (OPA) as a cement replacement material was investigated with focus on the effect of OPA content on the physicomechnical properties such as consistency, setting times, soundness, compressive and flexural strengths of OPA ...
Abdullahi, Basiru   +2 more
core   +2 more sources

Effects of thermal treatment on the mechanical properties, microstructure and phase composition of an Ettringite rich cement

open access: yesCement, 2023
Recently calcium sulfoaluminate cements gain increasing attention due to their significant potential to reduce the carbon footprint of cement production compared to Portland cement.
Sandra Afflerbach   +4 more
doaj  

An Amygdala‐hippocampus Circuit for Endocannabinoid Modulation of Anxiety Avoidance

open access: yesAdvanced Science, EarlyView.
This study employs three synapse‐specific endocannabinoids (eCB) probes to monitor dynamic eCB release, activate CB1Rs and knockdown 2‐AG biosynthesis enzymes in glutamatergic anterior basolateral amygdala ‐ ventral hippocampus (aBLA–vHPC) circuit. At aBLA–vHPC circuits, activation of CB1Rs reduce anxiety avoidance, and knockdown of eCB biosynthesis ...
Bao Xue   +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

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