Results 81 to 90 of about 41,579 (296)

Mechanochemical Piezoelectric Catalysis: Advancing the Hydrogenation of Alkenes

open access: yesAdvanced Science, EarlyView.
This study presents mechanochemical piezoelectric catalysis for alkene hydrogenation, eliminating the need for transition metals, H2, and solvents. The method effectively hydrogenates diverse activated and unactivated alkenes and shows potential for modifying bioactive molecules in pharmaceuticals.
Zixi Ai   +5 more
wiley   +1 more source

Rock-forming minerals, Vol. 2 Chain silicates, Vol. 3 Sheet silicates, Vol. 4 Framework silicates, Vol. 5 Non-silicates, by W. A. Deer, R. A. Howie and J. Zusmann, 1962-63

open access: yes, 1964
Rock-forming minerals, Vol. 2 Chain silicates, Vol. 3 Sheet silicates, Vol. 4 Framework silicates, Vol. 5 Non-silicates, by W. A. Deer, R. A. Howie and J. Zusmann, 1962-63. In: Bulletin du Groupe français des argiles.

core   +1 more source

Fabrication, structure et chimie de silicates alcalins techniquements importants [PDF]

open access: yes, 1985
This paper discusses the most recent state of knowledge of commercial alkali silicates (five solid types, sodium metasilicate, various amorphous hydrated silicates (Portile®) and orthosilicate hydrate or metasilicate hydrate, water glass solutions).
Christophliemk, Peter
core   +1 more source

CLRe: A Synergistic Dual‐Engine Framework for One‐Step Retrosynthesis Prediction

open access: yesAdvanced Science, EarlyView.
CLRe uses a contrastive difficulty score to order pretrained seq2seq fine‐tuning for retrosynthesis. Reaction embeddings define the ranking score, and a cumulative easy‐to‐hard schedule expands from the easiest subset to the full training set while earlier examples remain active.
Tianhao Su   +5 more
wiley   +1 more source

Sheet‐Size‐Dependent Mosaicity of 2D Phyllosilicate Membranes

open access: yesAdvanced Science, EarlyView.
This study explores how the size of 2D vermiculite sheets affects the structure of laminar membranes. High‐resolution x‐ray diffraction reveals how sheet size governs structural disorder and crystallinity. These changes directly impact ion permeability.
Min A Kim   +6 more
wiley   +1 more source

Multi‐Scale Bionic Structure Constructs Biomass Flame‐Retardant Thermal Insulation Foam Material

open access: yesAdvanced Science, EarlyView.
Inspired by mussel adhesion and hierarchical brick‐and‐mortar architectures, a cellulose‐based biomimetic foam is constructed by anchoring bentonite nanosheets onto a polydopamine‐decorated cellulose nanofiber network. The resulting foam combines low thermal conductivity with intrinsic flame retardancy and full biodegradability, presenting a ...
Jianming Liao   +10 more
wiley   +1 more source

Corte mediante láser de elementos estructurales de mullita-alúmina

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2006
The application of high power lasers for cutting of structural ceramics is a process under development exhibiting great advantages in comparison with conventional machining techniques.
Quintero, F.   +5 more
doaj  

Mass-loss and silicate production in oxygen-rich AGB stars: current understanding and open questions

open access: yesFrontiers in Astronomy and Space Sciences
AGB stars play a crucial role in the chemical enrichment of the Universe, polluting their host galaxies with gas and dust that reflect the nucleosynthesis processes active during their evolution.
Ester Marini, Silvia Tosi, Silvia Tosi
doaj   +1 more source

Interactions between tetraalkylammonium ions and silicates

open access: yes, 1992
+155hlm ...
DONCK, JACQUES COR JOHAN VAN DER
core  

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

open access: yesAdvanced 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   +8 more
wiley   +1 more source

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