Results 61 to 70 of about 656,200 (242)

Key Drivers of Activity and Selectivity in Cu‐Based Catalysts for Methanol Synthesis From CO2: Insights From Atomically Dispersed Promoters

Angewandte Chemie, EarlyView.
Mechanistic studies on model Cu─M/SiO2 catalysts (M = Zn, Ga, and In) reveal that promoters enable a formate spillover pathway from Cu to Mn+ (n = 2 or 3) sites. The promoter's electronic effect on formate bond strengths serves as a quantitative descriptor for activity and selectivity, balancing spillover dynamics with intermediate stabilization to ...
Nat Phongprueksathat, Gina Noh, Scott R. Docherty, Damian Vico van Berkel, Yannik Stiefel, Christophe Copéret, Atsushi Urakawa   +6 more
wiley   +2 more sources

Clinical outcome of root canal obturation using different based sealers: a retrospective cohort study

BMC Oral Health
Background This study aimed to assess and compare the performance of root canal treatment obturated either with calcium silicate-based or epoxy resin-based root canal sealers on retreatment cases with periapical lesions.
Ayşenur Kamacı Esen, Fahrettin Kalabalık   +1 more
doaj   +1 more source

Fluorescence Properties and Synthesis of Green-Emitting Tb3+-Activated Amorphous Calcium Silicate Phosphor by Ultraviolet Irradiation of 378 nm

International Journal of Optics, 2012
The excitation wavelength of conventional Tb3+-activated phosphor is near 270 nm. This study describes novel green-emitting Tb3+-activated amorphous calcium silicate by ultraviolet excitation at 378 nm.
Yoshiyuki Kojima, Masaaki Numazawa, Shinnosuke Kamei, Nobuyuki Nishimiya   +3 more
doaj   +1 more source

Bone formation on calcium phosphate bone substitute materials [PDF]

, 2010
A large number of bone substitute materials are available; for which some authors claim osteoconductivity and some osteoinductivity. In order to rank these materials an in vivo analysis was carried out.
Samizadeh, S.
core  

Self‐Assembly of Organic–Inorganic Copolymers Toward Bio‐Inspired Cementitious Composites

Advanced Science, EarlyView.
Organic–inorganic copolymerization of calcium silicate hydrate and thioctic acid produces a self‐organized nanocomposite inspired by the disordered collagen–mineral architecture of trabecular bone. The resulting material combines a compressive strength above 300 MPa with intrinsic physical reprocessibility, retaining over 80% of its strength and energy
Zonglin Xie, Suning Li, Fuwen Zhong, Gongkun Xiang, Mustapha Jamaa Garba, Yi Tian, Jun Wu, Zhiwu Yu, Qiang Yuan   +8 more
wiley   +1 more source

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

Architecting Phase‐Selective Interlayers for Stable SiOx Lithium Storage via Dual‐Function Design

Advanced Science, EarlyView.
Silicon anodes offer high capacity but suffer severe volume expansion. Silicon monoxide (SiO) buffers expansion, yet uncontrolled lithiation irreversibly consumes lithium as Li2O and oxygen‐rich silicates. Here, we design a layered SiOx featuring a phase‐selective conductive interfacial interlayer (PSCII), i.e., a Li4SiO4‐rich, ion‐accessible ...
Zhenfei Chang, Wei Dong, Yingguang Zhang, Hangchen Qu, Yifei Wang, Xiaolong Zhao, Chu Wang, Ming Dong, Huizhi Wang, Jin Xuan, Yug Joshi, Dennis Y.C. Leung, Wending Pan   +12 more
wiley   +1 more source

Thermodynamics and Kinetics in Host Design for Dendrite‐Free Zinc Metal Anodes

Advanced Science, EarlyView.
This review comprehensively summarizes recent advances in host design strategies for high‐performance zinc metal anodes, and deeply elucidates their thermodynamic and kinetic design principles from the perspective of surface modification, interface engineering, and spatial confinement.
Peng Xiao Sun, Quanwei Ma, Yangyang Liu, Longhai Zhang, Rui Wang, Yu‐Hui Zhu, Tengfei Zhou, Sen Xin, Le Yu, Chaofeng Zhang   +9 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