Introduction The objective of our research has been the development of advanced sensors that have the potential to: (1) minimize the environmental impact of energy conversion via control of combustion-generated pollutants such as NO, CO and unburned hydrocarbons; (2) reduce greenhouse gas (CO2) by improving combustion efficiency; and (3) monitor the fugitive emissions from greenhouse gas seques...

The bulk of the molecular gas in spiral galaxies is under the form of cold H2, that does not radiate and is only suspected through tracer molecules, such as CO. All tracers are biased, and in particular H2 could be highly underestimated in low metallicity regions. Our knowledge is reviewed of the H2 content of galaxies, according to their types, environment, or star-forming activities. The HI a...

The electrochemical reduction of CO2 in a highly selective and efficient manner is crucial step toward its reuse for the production chemicals fuels. Nanostructured Ag catalysts have been found to be effective candidates conversion CO2-to-CO. However, ambiguous determination intrinsic activity maximization density exposed active sites greatly limited use realization practical electrocatalytic de...

The novel amino(imino)germylene 1 was prepared by the conversion of HNIPr (NIPr = bis(2,6-diisopropylphenyl)imidazolin-2-imino) with 1 equiv. of Ge[N(SiMe3)2]2. Germylene 1 reacts with B(C6F5)3 to afford the borate salt 2(+)[MeB(C6F5)3](-) in a methyl-abstraction and ring-closing reaction. The conversion of 2 with Fe2(CO)9 furnishes the germylene iron carbonyl complex 3 with a trigonal planar-c...

Pump pulse duration is shown to determine the maximum efficiency of the up conversion process in ytterbium, thulium co-doped fluoride crystals through its role in determining the emitter temperature reached. We show that up-conversion efficiencies should only be measured when using the same pumping conditions as would be used in a proposed application and that thermal management of the up conve...