Primary and secondary carbonyls as a product of mobile source emissions related to atmospheric carbon monoxide and ozone in the Mexico City Metropolitan Zone.Due to their toxics effects in the public health, carbonyl concentrations in the atmosphere of the Mexico City Metropolitan Zone (MCMZ) are ...
We use the terms primary, secondary, and tertiary to refer to the substitution level that a given carbon has in a molecule. In other words, these terms are used to describe how many other carbons a given carbon is attached to. So to figure out the substitution level of any given carbon,...
Background and AimsSince 1997 the Effective Pre-school, Primary and Secondary Education project (EPPE/EPPSE)has investigated the attainment and development of approximately 3,000 children from preschoolto the end of Key Stage 3 (KS3). This current phase of the research explored howdifferent phase...
Primary carbon-11/carbon-14 and secondary proton/deuterium kinetic isotope effects in the SN2 reaction of hydroxide ion with methyl iodide. The relationshi... The primary 11 C/ 14 C KIE for the reaction of hydroxide ion with labeled iodide in 50% dioxane/water at 25掳C was determined to ...
1. Primary, Secondary, Tertiary, and Quaternary Alkyl Hydrocarbons There are four possible bonding patterns for alkyl carbons in hydrocarbons. Primary carbons (1°), are carbons attached tooneother carbon and three hydrogens. Also known as a methyl (CH3) ...
Amides are one of the most important organic compounds that are widely applied in medicine, biochemistry, and materials science. To find an efficient synthetic method of amides is a challenge for organic chemistry. We report here a facile synthesis method of primary and secondary amides through a...
1. We analysed photosynthetic rates and inorganic carbon use of thirty-five vascular macrophyte species collected submerged in eight nutrient- and CO 2 -rich Danish lowland streams. The species were classified in four groups as mainly terrestrial, homophyllous and heterophyllous amphibious and truly...
The use of magnetically recoverable supports for the immobilization of AuNPs instead of traditional oxides, polymers or carbon ... RL Oliveira,PK Kiyohara,LM Rossi - 《Green Chemistry》 被引量: 86发表: 0年 Aerobic oxidative esterification of alcohols catalyzed by polymer-incarcerated gold ...
Current through the primary coil induces current in the secondary coil Prime To mark with a prime mark. Primary Of first rank or importance or value; direct and immediate rather than secondhand; Primary goals A primary effect Primary sources A primary interest Prime To be renewed, or as at fi...
Rising CO2 concentration, a driving force of climate change, is impacting global food security by affecting plant physiology. Nevertheless, the effects of elevated CO2 on primary and secondary metabolism in tea plants (Camellia sinensis L.) still remain