cui nanoparticles as an expedient and recyclable catalyst for the synthesis of n-cyclohexyl-3-aryl-quinoxaline-2-amines in ethanol via a multi-component reaction are established. the products were separated from the catalyst simply by filtration. the catalyst could be recycled and reused for several times without noticeably decreasing the catalytic activity.

an efficient three-component reaction of dialkyl acetylendicarboxylates and 2-pyrrolidin in the presence of triphenylphosphine produces dialkyl 2-(2-pyrrolidin-n-yl)-3-(triphenylphosphanylidene)succinate. these phosphoranes undergo mild intramolecular wittig reaction to produce dialkyl (e)-2-(4,5-dihydro-3h-pyrrol-2-yl)fumarate in excellent yields.

An efficient three-component reaction of dialkyl acetylendicarboxylates and 2-Pyrrolidin in the presence of triphenylphosphine produces dialkyl 2-(2-Pyrrolidin-N-yl)-3-(triphenylphosphanylidene)succinate. These phosphoranes undergo mild intramolecular Wittig reaction to produce dialkyl (E)-2-(4,5-dihydro-3H-pyrrol-2-yl)fumarate in excellent yields.

The spontaneous emission of volatile organic compounds (VOCs) from common household items presents physiological hazards when inhaled over long periods of time. As a result, developing economical and reliable methods of detecting VOCs in hermetically-sealed enclosures, such as those employed in transportation, are important in ensuring the safety of passengers. In this study, copper(I) iodide (...

Our results showed that the parietal reach region (PRR) represents potential reaches (spatial location and effector) before an arm or eye movement is instructed or chosen (Cui and Andersen 2007, 2011), whereas area 5d only represents reaches (spatial location and effector) once a reach has been selected (Cui and Andersen 2011). We proposed that at the level of PRR, potential and chosen reaches ...

Synchronized CUI and GUI are developed for the universal design tactile graphics production system BPLOT3. BPLOT is the first tactile graphics production system for the blind that enables the blind to produce tactile graphics by themselves. With the new synchronized CUI and GUI of BPLOT3, the blind and the sighted can collaboratively produce tactile graphics. Proofreading of tactile graphics by...

The past is another country: they do things differently there. Hartley LP. The go-between 1 ne indulgence accorded to those of us in our senior years is the ability to reflect on life' s circumstances many decades ago and compare them with those of today. My recollections of medical practice, as the son of a surgeon, stretch back to my schooldays. A lasting memory is of the many gifts, the so-c...