Results 51 to 60 of about 2,520,258 (203)

High-Frequency Modulation Spectroscopy with a THz Quantum-Cascade Laser [PDF]

, 2013
A terahertz absorption spectrometer with a quantum-cascade laser (QCL) for high-resolution molecular spectroscopy is realized. The spectrometer is based on highfrequency (up to 50 MHz) modulation of the QCL frequency.
H.-W. Hubers, H. Richter, Richter, Heiko, Schrottke, Lutz, Grahn, H. T., Eichholz, Rene, Hübers, Heinz-Wilhelm, Wienold, Martin, R. Eichholz, M. Wienold, L. Schrottke, H. T. Grahn   +11 more
core   +1 more source

Cascade Sulfa-Michael/Aldol Reaction of (Het)Arylmethylidenefuran-2(3H)-Ones with 1,4-Dithiane-2,5-Diol

Chemistry Proceedings
A series of hybrid heterocyclic spiro compounds containing a tetrahydrothiophene moiety were prepared by the cascade sulfa-Michael/aldol reaction of (E)-3-[(2-oxo-5-arylfuran-3(2H)-ylidene)methyl]-4H-chromen-4-ones with 1,4-dithiane-2,5-diol under mild ...
Ekaterina M. Arzyamova, Olga A. Mazhukina, Alevtina Yu. Yegorova   +2 more
doaj   +1 more source

Progress towards photonic crystal quantum cascade laser [PDF]

, 2004
The work describes recent progress in the design, simulation, implementation and characterisation of photonic crystal (PhC) GaAs-based quantum cascade lasers (QCLs).
Stanley, C.R., Walker, C.L., Ironside, C.N., Farmer, C.D.   +3 more
core   +1 more source

Copper-catalyzed CuAAC/intramolecular C–H arylation sequence: Synthesis of annulated 1,2,3-triazoles

Beilstein Journal of Organic Chemistry, 2012
Step-economical syntheses of annulated 1,2,3-triazoles were accomplished through copper-catalyzed intramolecular direct arylations in sustainable one-pot reactions.
Rajkumar Jeyachandran, Harish Kumar Potukuchi, Lutz Ackermann   +2 more
doaj   +1 more source

Characteristics of R134a/R410A Cascade Heat Pump and Optimization [PDF]

, 2012
Single stage air source heat pump has been widely used around the world. However, it has some drawback, for example, deteriorated heating capacity and COP in cold ambient temperature.
Kim, Min Soo, Kim, Dong Ho, Park, Han Saem   +2 more
core   +1 more source

Choline Oxidase-Incorporated ATRP-Based Cerium Nanogels as Nanozymes for Colorimetric Detection of Hydrogen Peroxide and Choline

Biosensors
Choline is an important molecule in monitoring food safety and infant nutrition. Here, we report Ce nanogels synthesized by atom transfer radical polymerization (ATRP) employing Ce-coordinated acryloyl-lysine polymer brushes (Ce@SiO2 NGs) as highly ...
Trung Hieu Vu, Byung Jo Yu, Moon Il Kim
doaj   +1 more source

Stereoselective Four-Component Synthesis of Functionalized 2,3-Dihydro-4-Nitropyrroles

Frontiers in Chemistry, 2019
We report a metal-free and stereoselective four-component reaction between α-ketoamides, amines, aromatic aldehydes and β-nitroalkenes or β-pivaloxy-nitroalkanes to obtain 2,3-dihydro-4-nitropyrroles functionalized in every position.
Dong Wang, Xinyue Ma, Linru Dong, Hairong Feng, Peng Yu, Laurent Désaubry, Laurent Désaubry   +6 more
doaj   +1 more source

Cascade Locks Notice of Adopted Amendment (2009-02-02)

, 2009
8 pp. Adopted 2009-02-02.
Cascade Locks (Or.)
core   +1 more source

Green and Facile Assembly of Diverse Fused N-Heterocycles Using Gold-Catalyzed Cascade Reactions in Water

Molecules, 2019
The present study describes an AuPPh3Cl/AgSbF6-catalyzed cascade reaction between amine nucleophiles and alkynoic acids in water. This process proceeds in high step economy with water as the sole coproduct, and leads to the generation of two rings ...
Xiuwen Jia, Pinyi Li, Xiaoyan Liu, Jiafu Lin, Yiwen Chu, Jinhai Yu, Jiang Wang, Hong Liu, Fei Zhao   +8 more
doaj   +1 more source

Cascade Locks Notice of Adopted Amendment (2006-09-12)

, 2006
10 pp. Adopted 2006-09-12.
Cascade Locks (Or.)
core   +1 more source