55453 research outputs found
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Administration/Faculty
No full textA contact sheet of multiple photographs of an individual only identified as Dennis standing next to artifacts in a museum.https://scholarscompass.vcu.edu/rg60/1112/thumbnail.jp
Faculty, Rupert Schmidt-Ullrich
No full textA contact sheet of multiple photographs of an unnamed VCU faculty member and Dr. Rupert Schmidt-Ullrich. The unnamed individual is seen working in a laboratory next to a DNA synthesizer. Rupert Schmidt-Ullrich is seen with a patient on a radiotherapy accelerator, and the other images show Rupert Schmit-Ullrich displaying the radiotherapy accelerator.Schmit-Ullrich founded the Virginia Commonwealth University Department of Radiation Oncology in 1988.https://scholarscompass.vcu.edu/rg60/1114/thumbnail.jp
Ackell Residence Center
No full textA photographic print of the Ackell Residence Center with some individuals entering and exiting the building, and cars are seen parked on the side of the street.https://scholarscompass.vcu.edu/rg60/1150/thumbnail.jp
Department of African American Studies
No full textA photographic print of an individual sitting at a table with books, papers, and a telephone laid out with a little sign that says, What\u27s Your Hang Up? Some of the books on the table include The American Negro Reference Book, Black Skin White Masks: The Experiences of a Black Man in a White World by Frantz Fanon, The Crisis of the Negro Intellectual, and Darkwater: Voices from Within the Veil by W.E.B. DuBois.https://scholarscompass.vcu.edu/rg60/1168/thumbnail.jp
Department of African American Studies
No full textA photographic print of four individuals standing and having a conversation. The individual second from the left is holding a pen and pieces of paper. A large sheet of paper with hand painted symbols hangs behind them.https://scholarscompass.vcu.edu/rg60/1173/thumbnail.jp
Determination of the Aerosolization Efficiency of Nicotine in Solvent E-Liquid Mixtures
No full textElectronic cigarette liquids (e-liquids) are typically formulated as a mixture of propylene glycol (PG) and vegetable glycerin (VG), flavorants, and pharmacologically active compounds such as nicotine. Advancements have enabled e-cigs to be co-opted for use with drugs other than nicotine. The interaction between substances can form a eutectic mixture promoting aerosolization. The purpose of this experiment was to determine if varying concentrations of ethanol impacted aerosolization efficiency and recovery of nicotine. E-liquids were made using five different PG:VG ratios, 12 mg/mL nicotine, and seven different ethanol concentrations in each matrix. Aerosol capture was performed on the 35 eliquids using an aerosol trapping system. Each trial (n=5) consisted of 10, four second puffs. The device tank was weighed before and after each aerosolization session. Samples were analyzed by headspace-gas chromatography-flame ionization detection and liquid chromatograph-tandem mass spectrometry. The average aerosolized nicotine dose per puff [percent coefficient of variation] was determined to be 0.56 ± 0.06 mg [10%] to 0.66 ± 0.05 mg [8%] in 100% propylene glycol and 0.42 ± 0.06 mg [13%] to 0.48 ± 0.03 mg [5%] in 100% vegetable glycerin from 0% to 25% ethanol in an e-liquid. Increasing the concentration of ethanol in e-liquids decreased the liquid’s viscosity, promoting aerosolization and increasing the nicotine dose delivered. Matrix effects were also noted. Similar results could be expected if nicotine was replaced with a different solvent. Increased drug availability from less viscous e-liquid formulations can lead to untoward effects. While experienced consumers self-titrate the amount of drug consumed to manage effects, the increased dose delivered can facilitate substance addiction
The Development of a Colorimetric Rapid Test for Cannabinoid Detection via 3D Printing Techniques
No full textWith the increased legalization of cannabis, the need for a rapid and reliable roadside test to determine the intoxication of drivers is paramount. This research focused on the development of a 3D-printed cartridge combined with the colorimetric dye Fast Blue for the detection of Δ9-tetrahydrocannabinol (Δ9-THC), cannabinol (CBN), and cannabidiol (CBD). Liquid cannabinoid solutions of varying concentrations were analyzed alongside multiple Fast Blue matrices, including a dry down system of Fast Blue and DI water, Fast Blue and Agar, and Fast Blue and synthetic gelatin. The overall efficacy of Fast Blue B (FB-B) and Fast Blue BB (FB-BB) as a colorimetric detection system for the presence of cannabinoids was evaluated through multiple experiments, including dye concentration analysis, drop-size tests, variability tests, calibration curve construction, L*a*b* color analysis, and fluorescence analysis. Images were collected using both a flatbed scanner and a 3D-printed photo box. Images were analyzed using ImageJ to quantify color changes, yielding analytical signals or intensity values. The results of the experimentation found that the combination of synthetic gelatin and FB-B and FB-BB provided the lowest overall variability between replicate cartridges across the three tested layer systems. The combination of FB-B and synthetic gelatin showed possible linearity (R2=0.55, r=0.74) with a small overall intensity range (11.4-11.9). Strong intensity readings were obtained from 10-100 ng, showing a low limit of detection for this system. The combination of FB-BB and the synthetic gelatin resulted in evidence of linearity (R2=0.94, r=0.97) with a larger intensity range (6.15-7.65). Strong intensity readings were detected with this system (10-100 ng). Regarding cannabinoid differentiation, the FB-B and synthetic gelatin showed promising results in the L*a*b* color space, which was used to model the cartridges\u27 hue spatially in 3D. By modeling three replicates for each tested cannabinoid (CBD, CBN, and THC), two main clusters emerged: one with CBD and another with Δ9-THC and CBN. This showed preliminary cannabinoid selectivity based on hue differentiation. The FB-BB and synthetic gelatin systems were tested to determine whether fluorescence-based cannabinoid differentiation could be detected. No significant differences in the fluorescence of the cannabinoids with FB-BB were observed. Overall, this research provides a first step toward developing a portable detection tool for the presence of cannabinoids, using low-cost, readily available materials
A Medal for My Cat
No full text“A Medal for My Cat” chronicles the support and sacrifice that family provide to service members, as seen through the eyes of a cat. CiCi graduates from a PetSmart adoption program only to find herself enlisted as a lifelong wingman. She takes on her new role with gusto, usually leading the way, but sometimes… needing to stop and lick her wounds.
Articles, stories, and other compositions in this archive were written by participants in the Mighty Pen Project. The program, developed by author David L. Robbins, and in partnership with Virginia Commonwealth University and the Virginia War Memorial in Richmond, Virginia, offers veterans and their family members a customized twelve-week writing class, free of charge. The program encourages, supports, and assists participants in sharing their stories and experiences of military experience so both writer and audience may benefit
Junior Recital, Lauryn Jones, alto saxophone
No full textJunior RecitalLauryn Jones, alto saxophoneRussell Wilson, pianoMonday, November 10, 2025 at 6:00 p.m.Recital HallJames W. Black Music Center1015 Grove Avenue | Richmond, VirginiaThe presentation of this junior recital will fulfill in part the requirements for the Bachelor of Music degree in Music Education. Lauryn Jones studies alto saxophone with Dr. Sheri Oyan
Percussion Ensemble, video
No full textEnsemble Performance, videoPercussion Ensembledirected by Nate FuerstThursday, December 4, 2025 at 7:00 p.m.Sonia Vlahcevic Concert HallW.E. Singleton Center for the Performing Arts922 Park Avenue | Richmond, Virgini