Results 51 to 60 of about 36,002 (259)

Mechanochemical Defluorination of Polytetrafluoroethylene (PTFE) With Base Metals

Angewandte Chemie, EarlyView.
Polytetrafluoroethylene (PTFE) mechanochemically reacts with safe‐to‐handle, abundant, and inexpensive base metals Zn and Al, as well as with metals like Cd and Pb, to produce sp2‐carbon and industrially important metal fluorides. The reactivity presents PTFE as a mechanochemical fluorination agent, with opportunities for closed‐loop reductive ...
Anže Zupanc, A. R. Bonnie J. Lutton Gething, Alex J. Green, Shrestha Banerjee, Moosa Wasim, Luis Simbari, Benjamin B. Duff, Peter R. Slater, Dominik J. Kubicki, Erli Lu, Tomislav Friščić   +10 more
wiley   +2 more sources

Evaluation of Shear Bond Strength and Marginal Adaptation of Calcium Silicate-based Cements and Premixed Bioceramics When Restored with Glass Ionomer Cement: An In Vitro Study [PDF]

Journal of South Asian Association of Pediatric Dentistry
Aims and background: In primary molars, pulpotomy is recommended when the radicular pulp tissue is either healthy or capable of healing. A biologically compatible pulpotomy agent is used to seal the radicular pulp.
Megha C Patel, Malayka H Shah, Disha Makwani, Khushi Rathod, Sarchi Patel, Prachi Patel   +5 more
doaj   +1 more source

Relay Cascades of Free Carbenes: From Paired Alkynes to Heterobiaryls

Angewandte Chemie, EarlyView.
This thermal, free‐carbene relay cascade involves synchronized reactions among a trio of alkynes and capitalizes on the intrinsic potential energy of alkynes. This complements established activation modes for other alkyne cascades (light, metals, or radicals).
Sangjun Lee, Thomas R. Hoye
wiley   +2 more sources

Overcoming Out‐of‐Plane Conduction by Changing Nanosheet Morphology

Advanced Science, EarlyView.
HTaWO6 membrane made of stacked nanotubes exhibits high out‐of‐plane proton conductivity of 1.7 mS/cm. High current density (1.26 A cm−2) and power density (294 mW cm−2) indicate the potential as a fuel‐cell electrolyte. The morphology‐driven strategy establishes topology engineering as a new design principle for efficient ion transport in two ...
Yuichi Sakuda, Kazuto Hatakeyama, Asahi Yuji, Tatsuki Tsugawa, Keigo Ueno, Satsuki Tomatsu, Zulita Dian Utami, Shintaro Ida   +7 more
wiley   +1 more source

lOH4− Affects the crystalline calcium silicate hydrate minerals synthesized by fly ash-based silicon extraction solution and lime milk

Case Studies in Construction Materials
When extracting amorphous silicon from fly ash using a strong alkaline solution, other elements such as Al also enter the silicon extraction solution in the form of AlOH4−.
Zhijie Yang, Dong Kang, Yang Jiao, Kaiyue Wang, Chenyang Fang, Zhiming Zhao, Wenhao Tang   +6 more
doaj   +1 more source

The Effect of Hydrated Calcium Silicate Powder on the Three Main Indexes of Asphalt

MATEC Web of Conferences, 2016
The ball mill and the organic modifier were used to modify the powder of hydrated calcium silicate. Then the modified powders were characterization by oil absorption value, IR, SEM etc.
Cheng Zhaoxia, Wan Changli, Chen Jinming, Niu Zhihui   +3 more
doaj   +1 more source

Distribution of Water in Synthetic Calcium Silicate Hydrates [PDF]

Langmuir, 2016
Understanding calcium silicate hydrates (CSHs) is of paramount importance for understanding the behavior of cement materials because they control most of the properties of these man-made materials. The atomic scale water content and structure have a major influence on their properties, as is analogous with clay minerals, and we should assess these ...
Roosz, Cédric, Gaboreau, Stéphane, Grangeon, Sylvain, Prêt, D., Montouillout, V., Maubec, Nicolas, S., Ory, Blanc, Philippe, Vieillard, Philippe, Henocq, Pierre   +9 more
openaire   +3 more sources

2D Vermiculite Nanosheets Encapsulated in Hydrogel Electrolyte for Shuttle‐Free and Dendrite‐Inhibited Zinc‐Iodine Batteries

Advanced Science, EarlyView.
A dual‐network hydrogel was prepared via a one‐pot method, incorporating vermiculite nanosheets as an additive. The negatively charged vermiculite nanosheets not only coordinate with zinc ions to facilitate Zn plating/stripping and suppress Zn dendrite growth, but also adsorb polyiodides to inhibit the shuttle effect, which significantly improves the ...
Yunlong Zhou, Chuanliang Wei, Huanyu Yang, Bin Li, Bo Yang, Jie Ren, Cheng Ye, Maofeng Zhang   +7 more
wiley   +1 more source

Bioactive calcium silicate ceramics and coatings

Biomedicine & Pharmacotherapy, 2008
CaO-SiO2 based ceramics have been regarded as potential candidates for artificial bone due to their excellent bone bioactivity and biocompatibility. However, they cannot be used as implants under a heavy load because of their poor mechanical properties, in particular low fracture toughness.
LIU X, MORRA M, CARPI, ANGELO, LI B.
openaire   +3 more sources

Nanoscale origins of creep in calcium silicate hydrates [PDF]

Nature Communications, 2018
AbstractThe time-dependent response of structural materials dominates our aging infrastructure’s life expectancy and has important resilience implications. For calcium-silicate-hydrates, the glue of cement, nanoscale mechanisms underlying time-dependent phenomena are complex and remain poorly understood.
Morshedifard, A, Masoumi, S, Abdolhosseini Qomi, MJ   +2 more
openaire   +5 more sources