Historical and Regional Pronunciations in Vocal Performance

RILM: Particular pronunciations or dialects are important factors in the creation and execution of vocal music. Such sounds can have a dramatic effect on the coloration and rhythmic profile of a piece of music; the recreation of such sounds is thus of great importance

Early Recordings and Musical Style: Chaning Tastes in Instrumental Performance, 1900-1950. By Robert Philip

Leedy discusses and reviews Philip\u27s 1992 book

Detection of benzotriazole and related analogues in surface samples collected near an Ohio airpark

Benzotriazoles are a class of contaminant of emerging concern which are commonly used as anticorrosive agents in aircraft deicer and anti-icing fluids (ADAFs). The analogues 1H-benzotriazole (BTZ), 4-methyl-1H-benzotrizole (4m-BTZ), and 5-methyl-1H-benzotriazole (5m-BTZ) are commonly found in environmental occurrence together. The two methylated isomers, collectively known as tolytriazole (TTZ), have different toxicity and stability. These contaminants are highly water soluble and resistant to biodegradation, making them persistent through water treatment. Benzotriazoles have been detected worldwide; this investigation focuses on monitoring three sites near a small airpark in Wilmington, Ohio. Two sites that receive runoff from the airpark, Lytle Creek and Indian Run, have been under investigation for decades due to documented poor water quality issues. This investigation adds to data from the two previous years documenting an increase in BTZ compounds that corresponds to an increase in activity at the airpark by an online retailer. Solid Phase Extraction (SPE) was used to isolate benzotriazoles from surface water samples. Liquid Chromatography/Mass Spectrometry (LC/MS) was used for separation and detection of analytes. Each consecutive monitoring season detected more BTZ and TTZ on average than previous seasons. The 2021 season detected TTZ from 0.346-1.785 µg/L at Indian Run. Lytle Creek yielded BTZ from 0.051-0.158 µg/L and TTZ from 1.700-51.87 µg/L. Other occurrences have detected BTZ compounds associated with airpark runoff ranging from ng/L to mg/L. Gas Chromatography/Mass Spectrometry (GC/MS) was employed to separate the two TTZ isomers that could not be separated by LC/MS. This method revealed a ratio of 41.29% 4m-BTZ and 58.71% 5m-BTZ in selected water samples, a ratio which is similar to findings in a Wisconsin study. Based on the ratios of each isomer, hazard quotients assessed most samples analyzed as low environmental risk with a few days presenting medium to high environmental risk. Sediment samples were also examined for presence of benzotriazoles, but the results were inconclusive

Singing in Latin, or, Pronunciation explor\u27d. By Harold Copeman

Leedy discusses and reviews Copeman\u27s 1990 book

A comparison of labor mobility in the Soviet Union and the United States

Call number: LD2668 .R4 1968 L42

Small Business Participation in Air Force Procurement: Participation Trends and the Effect of Acquisition Reform Initiatives on Air Force Procurement via Selected Contract Types in Selected Product Categories

Small Businesses (SB) have been of recognized important to the Federal Government for many years. This thesis explores the role of SB contractors in Air Force (AF) procurement and the effects of recent acquisition reform (AR) initiatives on their involvement, including their method of involvement (contract type), product areas in which they participate, and possible new areas of measurement. This thesis answers the research and investigative questions in three ways. First, it explores the correlation of AR initiatives to SB participation as a whole, via selected contract types, and in selected product categories via causal regression models. Next, it identifies trends in AF procurement via selected contract types in selected product categories via descriptive numerical comparison. Finally, it identifies possible product areas for improved SB recruitment. The results of this thesis are as varied as the methodologies employed to answer the research and investigative questions. First, very little correlation was found between acquisition reform initiatives and SB participation. Next, SB participation trends via the selected contract types in the selected product areas varied much greater than overall SB participation. Finally, several product categories were identified as suffering from a decreasing level of SB participation