Results 61 to 70 of about 364,055 (260)
The Canadian Journal of Chemical Engineering, EarlyView.Valorization of ferrous and non‐ferrous metallurgical slags for water treatment: modification routes and applications in advanced oxidation, electrochemical processes, and adsorption within a circular economy framework. Abstract The removal of recalcitrant organic pollutants and heavy metals from water remains a critical challenge for safe drinking ...
Flor‐Tania Escárcega‐Olivares +2 more
wiley +1 more source
Controlled growth and ordering of poorly-crystalline calcium-silicate-hydrate nanosheets
Communications Materials, 2021 Calcium-silicate-hydrate is the main component of cement, and controlling its structure is vital to its properties. Here, graphene oxide is used to constrain the growth and optimize the assembly of calcium-silicate-hydrate, substantially improving its ...
Felipe Basquiroto de Souza +4 more
doaj +1 more source
Radiopacity evaluation of calcium silicate cements
BMC Oral Health, 2023 Abstract Background The aim of this study was to compare the radiopacity of calcium silicate cements using a digital imaging method. Methods Four calcium silicate cements, NeoMTA 2, OrthoMTA, ProRoot MTA, and ...
Sen, Havva Gozde +2 more
openaire +5 more sources
Perceived importance and didactic difficulty of chemistry education: Insights from Czech teachers
The Curriculum Journal, EarlyView.Abstract This empirical study examines how chemistry teachers in lower and upper secondary schools in the Czech Republic evaluate the content of the chemistry curriculum, focussing on its perceived importance and didactic difficulty. Based on a quantitative survey (N = 146), the study provides insight into the pedagogical content knowledge of ...
Jitka Lorenzová +6 more
wiley +1 more source
Alternative cement clinkers [PDF]
, 2017 This article reviews proposed technical approaches for the manufacture and use of alternatives to Portland Cement Clinker as the main reactive binder component for ordinary concrete construction in non-specialty applications, while giving ...
Ellis Gartner +3 more
core +1 more source
Thermal Damage of Set Silicate Cement in Ultra-High Temperature Xerothermic Environment
Zuanjingye yu wanjingyeIn coal gasification and shale gas in-situ development, the bottoms of the wellbores are in an ultra-high temperature xerothermic environment, which is of great challenge to the thermal stability of the cement sheaths.
Xiaojiang LI +4 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.Cement infill shares compressive and shear stresses during loading, while interfacial friction hinders crack propagation and reduces stress concentration, improving the rock's load‐bearing capacity. Failure modes vary with crack inclination. Unfilled specimens show four modes.
Shihao Yuan +4 more
wiley +1 more source
Retention of Root Canal Posts: Effect of Cement Film Thickness, Luting Cement, and Post Pretreatment. [PDF]
, 2015 The aim of this study was to investigate the effect of the cement film thickness of a zinc phosphate or a resin cement on retention of untreated and pretreated root canal posts.
Benetti, A R +3 more
core +2 more sources
MATEC Web of Conferences, 2018 Cement-containing building materials durability depends both on the original clinker composition and on the structure of hydrated portland cement compositions on micro and nanoscales.
Guryanov Alexander +2 more
doaj +1 more source
Investigating in vitro Effect of Endodontic Calcium Silicate-based Biomaterials on the Human Cell Survival: A Systematic Review [PDF]
Journal of Mazandaran University of Medical Sciences, 2023 Background and purpose: The use of biomaterials in restorative dentistry is receiving increasing attention. In the treatment of living pulp, calcium silicate-based materials are used, the most common of which are MTA, biodentine, and CEM Cement.
Sahar Shabani Panbeh Choleh +4 more
doaj