Both long chain alkyl thiols and alkyl amines behave as size focusing agents for gold nanoparticles, a process that is under thermodynamic control. However, amines do not oxidize surface gold atoms while thiols do oxidize surface gold to gold(I) with evolution of hydrogen gas. Therefore, alkyl amines participate in digestive ripening by a different mechanism. The efficiency of alkyl amines for ...

Liquid amines can be immobilized within the pores of polymeric supports to provide a regenerable CO2 sorbent. This paper describes the capture of CO2 by a range of ethanolamines (primary, secondary, and tertiary) immobilized within the pores of high-surface-area poly(methyl methacrylate) beads. These supported amines were used to remove low concentrations (7.6 mmHg) of CO2 by a pressure swing a...

A chiral phosphoric acid catalyzed asymmetric transfer hydrogenation of aromatic amines, quinolin-3-amines, was successfully developed with up to 99% ee. To supplement our previous work on the Ir-catalyzed asymmetric hydrogenation of 2-alkyl substituted quinolin-3-amines, a number of 2-aryl substituted substrates were reduced to provide a series of valuable chiral exocyclic amines with high dia...

OBJECTIVES To evaluate student academic performance and perception towards blended learning and flipped classrooms in comparison to traditional teaching. METHODS This study was conducted during the hematology block on year three students. Five lectures were delivered online only. Asynchronous discussion boards were created where students could interact with colleagues and instructors. A flipp...

Article history: Received on: 01/12/2016 Revised on: 18/12/2016 Accepted on: 30/12/2016 Available online: 31/01/2017 The blended essential oil was composed of eucalyptus, rosemary, patchouli, and pine oils. The blended oil was analyzed by GC-MS. The effects of blended oil on autonomic parameters and emotional changes in humans following inhalation were an investigation in this study. Thirty hea...

BELL (Building Educated Leaders for Life) is a nonprofit organization offering academic tutoring to elementary school children from low-income, urban communities. BELL launched a blended learning training for the tutoring staff working in its summer program in 2008, and won Training Magazine’s Blended Learning and Performance Project of the Year. The e-learning from that blended learning traini...

Biogeography-based optimization (BBO) is a new evolutionary optimization method that is based on the science of biogeography. We propose two extensions to BBO. First, we propose a blended migration operator. Benchmark results show that blended BRO outperforms standard BBO. Second, we employ blended BRO to solve constrained optimization problems. Constraints are handled by modifying the BRO immi...

Blended learning environments are now the norm in most information systems schools. Blended learning environments are constantly changing as a wide array of technical and social influences bear upon our universities and colleges. This study describes a widely based literature review of the blended learning environment, particularly as it pertains to information systems teaching and learning as ...

One of the major drawbacks of IC engines is low efficiency and pollution resulting from incomplete combustion. In order to improve the emission properties and performance an oxygenated additive MTBE (Methyl tertiary butyl ether), is blended with gasoline. A four cylinder, 1817 cc engine was used for analysing both emission and performance characteristics. Tests were carried out with 100% pure g...