University of Colorado Colorado Springs

About: University of Colorado Colorado Springs is a education organization based out in Colorado Springs, Colorado, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 6664 authors who have published 10872 publications receiving 323416 citations. The organization is also known as: UCCS & University of Colorado at Colorado Springs.

A Strong Support Effect in Selective Propane Dehydrogenation Catalyzed by Ga(i-Bu)3 Grafted onto γ-Alumina and Silica

Abstract: The reactions of Ga(i-Bu)3 (i-Bu = CH2CH(CH3)2) with the dehydrated and partially dehydroxylated surfaces of alumina (Al2O3–500) and silica (SiO2–700) were studied by IR, high field solid-state NMR and EXAFS spectroscopies, as well as elemental analysis. Grafting onto Al2O3–500 occurs selectively by protonolysis at individual surface hydroxyl groups, resulting in the formation of mononuclear [(≡AlO)Ga(i-Bu)2L] (L = surface oxygen) sites as the major surface organometallic entities. Conversely, grafting on silica affords dinuclear species [(≡SiO)2Ga2(i-Bu)3] by a combination of protonolysis and isobutyl group transfer to Si. Further evidence for the difference in nuclearity was obtained by analysis of the WT-EXAFS. The mononuclear alumina-supported Ga sites show much higher activity in propane dehydrogenation than their dinuclear silica-supported counterparts. The propane dehydrogenation reaction may require the presence of Al–O–Ga bonds to promote heterolytic C–H bond activation. Comparisons with benchmar...

Project Risk Impact on Software Development Team Performance

Abstract: Project teams are formed to control the technical challenges and risks in system development. This paper examines the relationship between the various risks of system development and project team p...

Implementing community sport policy: understanding the variety of voluntary club types and their attitudes to policy

Abstract: The Olympic Legacy Plan has been a governmental concern prior to the London 2012 Games, particularly, the aspiration to use the event to inspire participation in sport. However, scant attention has been directed towards the voluntary sector and its role as a delivery agent of the legacy aspirations. New policies for community sport set out a clear focus on using national governing bodies and voluntary sports clubs (VSCs) to deliver growth in adult sports participation and to reduce the proportion of participants dropping out of sport by the age of 25. How far voluntary organizations are aware of and comply with top-down approaches to policy implementation is debatable, particularly when considering the origins and motives of voluntary clubs, their heterogeneous characteristics and their general indifference towards national sport-related policy. This relationship forms the basis of this enquiry. It draws from implementation theory and seeks to explore how far VSCs are aware of policy goals and to understa...