Results 71 to 80 of about 128,263 (290)

Theory of metastability in simple metal nanowires

, 2005
Thermally induced conductance jumps of metal nanowires are modeled using stochastic Ginzburg-Landau field theories. Changes in radius are predicted to occur via the nucleation of surface kinks at the wire ends, consistent with recent electron microscopy ...
Bürki, J., Stafford, C. A., Stein, D. L.   +2 more
core   +1 more source

Ketone Hydrogenation with Iridium Complexes with “non N–H” Ligands: The Key Role of the Strong Base [PDF]

, 2015
Ferrocenyl phosphine thioether ligands (PS), not containing deprotonatable functions, efficiently support the iridium catalyzed ketone hydrogenation in combination with a strong base co-catalyst. Use of an internal base ([Ir(OMe)(COD)]2 in place of [IrCl(
Deydier, Eric, Hayes, Joseph M., Lledós, Agustí, Malacea-Kabbara, Raluca, Manoury, Eric, Poli, Rinaldo, Ujaque, Gregori, Vincendeau, Sandrine   +7 more
core   +3 more sources

Biological Activity of Alkali Treated Aureomycin

Experimental Biology and Medicine, 1951
SummaryAlkali treated Streptomyces aureojaciens fermentation liquor contained considerable unchanged aureomycin. The pure antibiotic is inactivated by similar treatment. The product arising from mild alkaline inactivation of aureomycin was isolated and found to have essentially no antibacterial activity and no growth stimulating activity for the chick.
A C, DORNBUSH, J J, OLESON, A L, WHITEHILL, B L, HUTCHINGS   +3 more
openaire   +2 more sources

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

Advanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi, Norma Mallegni, Andrea Dorigato, Mario Milazzo   +3 more
wiley   +1 more source

Influence of raw material properties on microscopic and mechanical characteristics of alkali-activated materials

Case Studies in Construction Materials
Alkali-activated fly ash and slag pastes are considered a new low-carbon cementitious material with good mechanical characteristics and durability.
Dunwen Huang, Hao Chen, Youbao Zou, Qiaoming Yuan, Hui Peng   +4 more
doaj   +1 more source

Alkaline Activation of Kaolin Group Minerals

Crystals, 2020
Zeolites can be obtained in the process of the alkali-activation of aluminosilicate precursors. Such zeolite–geopolymer hybrid bulk materials merge the advantageous properties of both zeolites and geopolymers. In the present study, the effect of the type
Oliwia Biel, Piotr Rożek, Paulina Florek, Włodzimierz Mozgawa, Magdalena Król   +4 more
doaj   +1 more source

Elevated Level of DNA Damage and Impaired Repair of Oxidative DNA Damage in Patients with Recurrent Depressive Disorder [PDF]

, 2015
Background: Depressive disorder (DD), including recurrent DD (rDD), is a severe psychological disease, which affects a large percentage of the world population.
Bielecka-Kowalska, Anna, Czarny, Piotr, Gałecki, Piotr, Kacperska, Dagmara, Kawczyńska, Daria, Kwiatkowski, Dominik, Orzechowska, Agata, Szemraj, Janusz, Talarowska, Monika, Śliwiński, Tomasz   +9 more
core   +1 more source

Binder Chemistry – Low-Calcium Alkali-Activated Materials [PDF]

, 2013
Early developments in the developments of low-calcium (including calcium-free) alkali-activated binders were led by the work of Davidovits in France, as noted in Chap. 2. These materials were initially envisaged as a fire-resistant replacement for organic polymeric materials, with identification of potential applications as a possible binder for ...
Provis, John L., Fernández Jiménez, Ana, KAMSEU, Elie, LEONELLI, Cristina, Palomo, Angel   +4 more
openaire   +2 more sources

Laser‐Assisted Processing and Modification of Bioactive Glasses: A Review

Advanced Healthcare Materials, EarlyView.
Laser technologies provide powerful tools to process and transform bioactive glasses for advanced biomedical applications. This review discusses laser‐matter interaction mechanisms, laser surface engineering, and laser‐assisted fabrication of scaffolds and nanofibers.
Antonio Riveiro, Mario González‐Quintas, Mónica Fernández‐Arias, Jesús del Val, Félix Quintero, Rafael Comesaña, Fernando Lusquiños, Julian R. Jones, Juan Pou   +8 more
wiley   +1 more source

Effect of oil shale ash, Al, Zn and H2O2 foaming agents on formation of NASH and CSH cementitious gels in alkali activated reactions of kaolin and metakaolin

Discover Materials
Although waste left after combustion of oil shale is a rich in silicon, calcium and to less extent aluminum, alkali activation of the ash was of limited success in previous studies.
Fawwaz I. Khalili, Bassam El-Eswed, Omar Al Maani, Raid Banat, Mohammad W. Amer, Faryza Muhana, Omar Qteishat   +6 more
doaj   +1 more source