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403 results on '"Burnett, Joseph W."'

1. How the COVID-19 Pandemic Changed Chemistry Instruction at a Large Public University in the Midwest: Challenges Met, (Some) Obstacles Overcome, and Lessons Learned

Author

Burnett, Joseph W., Burke, K. A., Stephens, Nicole M., Bose, Ishani, Bonaccorsi, Cristina, Wade, Adam M., and Awino, Joseph K.

Abstract

This communication presents a partial historical summary of some of Iowa State University's Chemistry Department teaching response to the shift to online course delivery caused by the COVID-19 pandemic. The observations reflect discussions between and informal surveys of an instructor cohort that impacted roughly 1200 undergraduate students. These students were enrolled in general chemistry I, organic chemistry II, inorganic chemistry, quantum mechanics, and chemistry for nonphysical-science majors. The paper highlights the challenges faced and describes how faculty and students met them.

Published
2020
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10. Directing the H2-driven selective regeneration of NADH via Sn-doped Pt/SiO2.

Author

Burnett, Joseph W. H., Li, Jianwei, McCue, Alan J., Kechagiopoulos, Panagiotis N., Howe, Russell F., and Wang, Xiaodong

Subjects
*NAD (Coenzyme), *HETEROGENEOUS catalysts, *NICOTINAMIDE, *CATALYSTS, *TIN
Abstract

H2-Driven NADH regeneration has long suffered from low selectivity when non-enzymatic, particularly heterogeneous catalysts, are used. In addition to the unselective nature of the catalysts, the typically unmeasured NAD+ conversion has inevitably hindered catalyst development. Here we report Sn-doped Pt/SiO2 catalysts for the selective regeneration of NADH and show that doping Pt/SiO2 with 10 at% Sn can deliver a selectivity of 90% (at full conversion) using H2. We propose that this is a result of Sn disturbing the Pt ensemble, altering the mode of NAD+ adsorption and directing the reduction to the 1,4-position of the nicotinamide ring. [ABSTRACT FROM AUTHOR]

Published
2022
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11. Directing the H2-driven selective regeneration of NADH via Sn-doped Pt/SiO2.

Author

Burnett, Joseph W. H., Li, Jianwei, McCue, Alan J., Kechagiopoulos, Panagiotis N., Howe, Russell F., and Wang, Xiaodong

Subjects
NAD (Coenzyme), HETEROGENEOUS catalysts, NICOTINAMIDE, CATALYSTS, TIN
Abstract

H2-Driven NADH regeneration has long suffered from low selectivity when non-enzymatic, particularly heterogeneous catalysts, are used. In addition to the unselective nature of the catalysts, the typically unmeasured NAD+ conversion has inevitably hindered catalyst development. Here we report Sn-doped Pt/SiO2 catalysts for the selective regeneration of NADH and show that doping Pt/SiO2 with 10 at% Sn can deliver a selectivity of 90% (at full conversion) using H2. We propose that this is a result of Sn disturbing the Pt ensemble, altering the mode of NAD+ adsorption and directing the reduction to the 1,4-position of the nicotinamide ring. [ABSTRACT FROM AUTHOR]

Published
2022
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34. Another Sea Pest

Author

Burnett, Joseph W., Burnett, Mark G., and Kauffman, C. Lisa

Published
1995

38. Hook, fin, scuba, skin: aquatic emergencies

Author

Auerbach, Paul S., Galli, Robert, Burnett, Joseph W., and Neuman, Tom S.

Subjects
Scuba diving -- Injuries, Fishhooks -- Injuries, Skin -- Care and treatment, Bites and stings -- Care and treatment, Physicians (General practice) -- Practice, Health, Practice, Care and treatment, Injuries
Abstract

This discussion of the emergency management of marine envenomations addresses only the species that are common in U.S. coastal waters. Recommendations for managing more exotic problems - the sting of [...]

Published
1994

39. Bites and stings: it's that time of year

Author

Anderson, Philip C., Burnett, Joseph W., and Wilson, David C.

Subjects
Summer -- Health aspects, Dapsone -- Health aspects, Bites and stings -- Care and treatment, Health, Care and treatment, Health aspects
Abstract

At first glance, it's usually hard to tell one sting or bite from another--and it usually doesn't matter. But when the difference is crucial, your knowledge and skill can mean [...]

Published
1992

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