Relation between Heat Hardening Reaction and Oxidizing Condensation Reaction in Phenolic Resins

Organic Synthesis: Aldol Condensation Reaction

In an "aldol addition" reaction an enol or enolate of an aldehyde or ketone reacts with a second aldehyde or ketone forming a new carbon-carbon bond which makes the aldol reaction an important reaction for organic synthesis. Originally, the aldol reaction used ethanal (see below) and therefore the product contained both an aldehyde and an alcohol functional group; thus it became known as the al...

Organic Synthesis: Aldol Condensation Reaction

In an "aldol addition" reaction an enol or enolate of an aldehyde or ketone reacts with a second aldehyde or ketone forming a new carbon-carbon bond. This makes the aldol reaction an important reaction for organic synthesis. Originally, the aldol reaction used ethanal (see below) and therefore the product contained both an aldehyde and an alcohol functional group; thus it became known as the al...

Relation between feelings of fatigue, reaction time and work productivity.

Taking into consideration the limited amount of research that has been done focussing on fatigue among workers in Indonesia, the writer has taken it upon herself to investigate the indicators of chronic fatigue of the concrete block and sewer pipe cast workers of a place located in Sleman District of Yogyakarta. The purpose of this study was to prepare an instrument to evaluate the feelings of ...

Relation between reaction time and reach errors during visuomotor adaptation.

Adaptation of reaching movements to visuomotor transformations is generally thought to involve implicit or procedural learning. However, there is evidence that explicit or cognitive processes can also play a role (Redding and Wallace, 2006 [31]). For example, the early phase of adaptation to a visuomotor rotation appears to involve spatial working memory processes linked to mental rotation (Ang...

Comparison of allergie reaction between paratuberculin P.P.D. heat killed M. paratuberculosis and lepromin in leprosy patients in Iran