SelectedWorks - Darryl J. Alofs

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Selected Works of Darryl J. Alofs

Professor Emeritus

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About Darryl J. Alofs

Present	Professor Emeritus, Missouri University of Science and Technology
Institution Organization Position Type Position Title Time Period to Options Current Position Affiliate my profile with this Institution

Aerospace Engineering and Mechanical Engineering

Performance Evaluation of a Fast Mobility-Based Particle Spectrometer for Aircraft ...

Journal of Propulsion and Power (2009)

Donald E. Hagen, Prem Lobo, Philip D. Whitefield, Max B. Trueblood, et al.

The Cambustion DMS500, a novel aerosol sizing instrument with fast time resolution, was first employed to sample jet engine particulate ...

Performance Evaluation of a Fast Mobility-Based Particle Spectrometer for Aircraft ...

Journal of Propulsion and Power (2009)

Donald E. Hagen, Prem Lobo, Philip D. Whitefield, Max B. Trueblood, et al.

The Cambustion DMS500, a Novel Aerosol Sizing Instrument with Fast Time Resolution, Was First Employed to Sample Jet Engine Particulate ...

Physical Characterization of Aerosol Emissions from a Commercial Gas Turbine ...

Journal of Propulsion and Power (2007)

Prem Lobo, Donald E. Hagen, Philip D. Whitefield and Darryl J. Alofs

This paper discusses the results of the Aircraft Particle Emissions Experiment Project for the physical characterization of total (nonvolatile plus ...

Physical Characterization of Aerosol Emissions from a Commercial Gas Turbine ...

Journal of Propulsion and Power (2007)

Prem Lobo, Donald E. Hagen, Philip D. Whitefield and Darryl J. Alofs

This Paper Discusses the Results of the Aircraft Particle Emissions Experiment Project for the Physical Characterization of Total (Nonvolatile Plus ...

A System for Collecting Milligram Quantities of Cloud Condensation Nuclei

Aerosol Science and Technology (1997)

Darryl J. Alofs, Allen L. Williams, Donald E. Hagen, Steven D. Medley, et al.

An experimental system to collect cloud condensation nuclei (CCN) onto filters in amounts sufficient for chemical analysis is described. This ...

A System for Collecting Milligram Quantities of Cloud Condensation Nuclei

Aerosol Science and Technology (1997)

Darryl J. Alofs, Donald E. Hagen, Steven D. Medley, Daniel R. White, et al.

An Experimental System to Collect Cloud Condensation Nuclei (CCN) Onto Filters in Amounts Sufficient for Chemical Analysis is Described. This ...

Intercomparison Between Commercial Condensation Nucleus Counters and an Alternating Temperature ...

Aerosol Science and Technology (1995)

Darryl J. Alofs, Chen Kwee Lutrus, Donald E. Hagen, Gilmore J. Sem, et al.

Three commercial CNC counters (TSI models 3010, 3022A, and 3025A) are compared with an alternating temperature gradient cloud chamber (ALGR). ...

Intercomparison between Commercial Condensation Nucleus Counters and an Alternating Temperature ...

Aerosol Science and Technology (1995)

Darryl J. Alofs, C. K. Lutrus and Donald E. Hagen

Three Commercial CNC Counters (TSI Models 3010, 3022A, and 3025A) Are Compared with an Alternating Temperature Gradient Cloud Chamber (ALGR). ...

Use of an Alternating Gradient Cloud Chamber to Measure the ...

Proceedings - Annual Technical Meeting - Institute of Environmental Sciences (1993)

Donald E. Hagen, Chen Kwee Lutrus, Max B. Trueblood, Philip D. Whitefield, et al.

An aerosol sampling project for the Air Force (Whitefield et al 1993), generated the need to make particle concentration measurements ...

Measurement of the chemical composition of cloud condensation nuclei

Proceedings of the 13th International Conference on Nucleation and Atmospheric Aerosols (1992, Salt Lake City, UT) (1992)

Allen L. Williams, Kent E. McClure, Darryl J. Alofs, Donald E. Hagen, et al.

Hydration Behavior of Laser Dye Aerosols of Mixed Composition Having ...

Journal of Aerosol Science (1992)

Max B. Trueblood, Donald E. Hagen and Darryl J. Alofs

This study concerns aerosol particles of mixed composition. The particles contain a water insoluble core (polystyrene latex), surrounded by a ...

Determining the chemical composition of cloud condensation nuclei

Mechanical and Aerospace Engineering Faculty Research & Creative Works (1992)

Allen L. Williams, Jane E. Rothert, Kent E. McClure, Darryl J. Alofs, et al.

This second progress report describes the status of the project one and one-half years after the start. The goal of ...

Hydration Behavior of Laser Dye Aerosols of Mixed Composition Having ...

Journal of Aerosol Science (1992)

Max B. Trueblood, Donald E. Hagen and Darryl J. Alofs

This Study Concerns Aerosol Particles of Mixed Composition. the Particles Contain a Water Insoluble Core (Polystyrene Latex), Surrounded by a ...

Determining the chemical composition of cloud condensation nuclei

Proceedings of the 5th International Conference on Precipitation Scavenging and Atmosphere-Surface Exchange Processes (1991, Richland WA) (1991)

Allen L. Williams, Darryl J. Alofs, Donald E. Hagen, Daniel R. White, et al.

A Study of the Hydration Properties of Selected Laser Dye ...

Aerosol Science and Technology (1990)

Donald E. Hagen, Max B. Trueblood and Darryl J. Alofs

The Hydration Behavior of Aerosols made Up of Various Fluorescent Dyes when Exposed to Water Saturation or Supersaturated Conditions Has ...

A Study of the Hydration Properties of Selected Laser Dye ...

Aerosol Science and Technology (1990)

Donald E. Hagen, Max B. Trueblood and Darryl J. Alofs

The hydration behavior of aerosols, made up of various fluorescent dyes, when exposed to water saturation or supersaturated conditions has ...

Condensation Coefficient Measurement for Water in the UMR Cloud Simulation ...

Journal of the Atmospheric Sciences (1989)

Donald E. Hagen, John L. Schmitt, Max B. Trueblood, John C. Carstens, et al.

A systematic series of condensation coefficient measurements of water have been made using the University of Missouri-Rolla cooled-wall expansion chamber ...

Measured Spectra of the Hygroscopic Fraction of Atmospheric Aerosol Particles

Journal of Applied Meteorology (1989)

Darryl J. Alofs, Donald E. Hagen and Max B. Trueblood

The relation between dry diameter (X0) and critical supersaturation (Sc) for atmospheric submicron aerosol particles is investigated using a long ...

Condensation Coefficient Measurement for Water in the UMR Cloud Simulation ...

Journal of the Atmospheric Sciences (1989)

Donald E. Hagen, John L. Schmitt, Max B. Trueblood, John C. Carstens, et al.

A Systematic Series of Condensation Coefficient Measurements of Water Have Been Made using the University of Missouri-Rolla Cooled-Wall Expansion Chamber ...

Measured Spectra of the Hygroscopic Fraction of Atmospheric Aerosol Particles

Journal of Applied Meteorology (1989)

Darryl J. Alofs, Donald E. Hagen and Max B. Trueblood

The Relation between Dry Diameter (Xo) and Critical Supersaturation (Sc) for Atmospheric Submicron Aerosol Particles is Investigated. the Particles Are ...

Condensation Method for Humidity Measurement in the UMR Cloud Simulation ...

Journal of Research of the National Bureau of Standards (1988)

Donald E. Hagen, Daniel R. White and Darryl J. Alofs

A cloud simulation facility has been developed for the study of various atmospheric cloud processes. The initial relative humidity of ...

CONDENSATION METHOD for HUMIDITY MEASUREMENT in the UMR CLOUD SIMULATION ...

Journal of research of the National Bureau of Standards (1988)

Donald E. Hagen, Daniel R. White and Darryl J. Alofs

A Cloud Simulation Facility Has Been Developed for the Study of Various Atmospheric Cloud Processes. the Initial Relative Humidity of ...

University of Missouri-Rolla Cloud Simulation Facility: Proto II Chamber

Review of Scientific Instruments (1987)

Daniel R. White, James L. Kassner, John C. Carstens, Donald E. Hagen, et al.

The Graduate Center for Cloud Physics Research at UMR Has Developed a Cloud Simulation Facility to Study Phenomena Occurring in ...

Measurement of the Condensation Coefficient of Water in the UMR ...

Proceedings of the 1987 Scientific Conference on Obscuration and Aerosol Research (1987, Aberdeen MD) (1987)

Daniel R. White, James L. Kassner, John C. Carstens, Donald E. Hagen, et al.

Measurements of the condensation coefficient of water under conditions closely approximating those in natural atmospheric cloud have been made in ...

University of Missouri--Rolla Cloud Simulation Facility: Proto II Chamber

Review of Scientific Instruments (1987)

Daniel R. White, James L. Kassner, John C. Carstens, Donald E. Hagen, et al.

The Graduate Center for Cloud Physics Research at UMR has developed a cloud simulation facility to study phenomena occurring in ...