Results 161 to 170 of about 489,664 (384)

Accidental Coal-gas Poisoning [PDF]

open access: green, 1957
H.D. Chalke, J. R. Dewhurst
openalex   +1 more source

Q‐Switched Mode‐Locking in Er‐Doped ZrF4‐BaF2‐LaF3‐AlF3‐NaF Fiber Lasers Using Carbon Nanotube–Saturable Absorber and GaSb‐Based Semiconductor‐Saturable Absorber Mirror

open access: yesAdvanced Photonics Research, EarlyView.
We compare Q‐switched mode‐locking in Er‐doped ZrF4‐BaF2‐LaF3‐AlF3‐NaF fiber lasers using an aerosol‐synthesized carbon nanotube (CNT)‐saturable absorber with a GaSb‐based semiconductor‐saturable absorber mirror (SESAM). While SESAM enables shorter pulses with higher peak power, CNT absorbers offer tunability and cost‐effectiveness.
Boris Perminov   +5 more
wiley   +1 more source

Solvent‐Free Mechanocatalytic Reduction of Nitro Compounds with Hydrogen Gas and its Application in the Synthesis of Drugs and their Intermediates

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
A solvent‐free mechanochemical reduction of nitro compounds using hydrogen gas is presented. In addition to enabling the synthesis of a variety of functionalized aniline derivatives, the method has been scaled up to gram quantities, evaluated for trace metal impurities, and applied to the synthesis of pharmaceutical compounds and their precursors.
Samarth Bhatnagar   +2 more
wiley   +1 more source

Cu(I)‐Catalyzed Interrupted Cycloaddition Between Azides, Ag(I)‐Acetylides, and Diorganoyl Dichalcogenides

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
Unleashing the power of Ag(I)‐acetylides with LiCl/dimethyl sulfoxide (DMSO). The LiCl/DMSO mixture have an unexplored ability to dramatically increase the solubility of Ag(I)‐acetylides regardless of their molecular structure, which is explored to achieve high chemoselectivity in the Cu(I)‐catalyzed interrupted cycloaddition between organic azides, Ag(
Diego Seckler   +8 more
wiley   +1 more source

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