This FANG_README20231201.txt file was generated on 20231201 by Runcheng Fang. ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset Aerosol and Surface Contamination Assessment of a Novel Ventilated Infectious Aerosol Containment Device 2. Author Information Principal Investigator Contact Information Name: Darrah Sleeth Institution: University of Utah, Family and Preventive Medicine Address: 375 Chipeta Way, Suite A, Salt Lake City, UT 84108 Email: darrah.sleeth@hsc.utah.edu ORCID: 0000-0002-8519-9092 Additional Author Contact Information Name: Runcheng Fang Institution: University of Utah Email: runcheng.fang@utah.edu ORCID: 0000-0002-9423-251X Additional Author Contact Information Name: Rachael Jones Institution: University of California, Los Angeles Email: rmjones@ph.ucla.edu ORCID: 0000-0003-1611-7900 Additional Author Contact Information Name: Niles Andrus Institution: University of Utah Email: niles.andrus@gmail.com ORCID: 0000-0003-3291-3106 Additional Author Contact Information Name: Thomas Dominguez Institution: University of Utah Email: thomas.dominguez@utah.edu ORCID: 0000-0001-7551-7010 3. Date of data collection (single date, range, approximate date) 20211101 to 20221130 4. Geographic location of data collection (where was data collected/where were you located when you obtained the data?): Industrial Hygiene Research Laboratory at the University of Utah 5. Information about funding sources that supported the collection of the data: This study was funded by the Department of Defense, W81XWH2110024. NA received additional support from the Rocky Mountain Center for Occupational and Environmental Health (CDC/NIOSH T42/OH008414). -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: CC BY NC - Allows others to use and share your data non-commercially and with attribution. 2. Links to publications that cite or use the data: Manuscript ID: ANNWEH-23-0095.R1 Manuscript Title: Aerosol and Surface Contamination Assessment of a Novel Ventilated Infectious Aerosol Containment Device (Accepect) 3. Links to other publicly accessible locations of the data: NA 4. Links/relationships to ancillary data sets: NA 5. Was data derived from another source? No 6. Recommended citation for the data: Sleeth D, Fang R, Jones R, 2022. Aerosol and Surface Contamination Assessment of a Novel Ventilated Infectious Aerosol Containment Device. The Hive: University of Utah Research Data Repository. https://doi.org/10.7278/S50d-ty62-keqa. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: Aerosol test result_all Short description: The database captures baseline testing data, encompassing tests conducted with different aerosols and devices (D1A, D1B, D2) under a range of conditions, including scenarios with and without exhaust ventilation. It also includes results from simulated use tests for device D2, highlighting the performance in various arm configurations. Contained within the database are records of environmental parameters for each experiment, such as the temperature and humidity levels at the start of the experiments. Additionally, it includes measurements of fan inlet velocity for the experiments that involved ventilation.The database documents the methods used for generating salt aerosols and the operational velocities of the particle generation system. It also includes detailed readings from aerosol spectrometers, providing particle counts in different size bins. Included are the particle size distributions and concentrations measured both inside and outside the device during tests. The database also provides key metrics like the median diameter and the geometric standard deviation of particle sizes, offering insights into the effectiveness of aerosol containment under different test conditions. 2. Relationship between files: NA 3. Additional related data collected that was not included in the current data package: NA 4. Are there multiple versions of the dataset? No -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: Experimental Design and Setup: Detailed description of the construction and dimensions of the temporary testing chamber. Information about the U-COVER device and the adult upper-body mannequin task trainer utilized for the experiments. Specifics of the experimental setup for different devices (D1A, D1B, D2) and the conditions under which each test was conducted, including with and without exhaust ventilation. Environmental Monitoring: Procedures for recording temperature and humidity at the start of each experiment. Methodology for measuring fan inlet velocity, especially for experiments involving ventilation. Aerosol Generation: The process of creating salt aerosols, detailing the composition of the salt solution, and the method of injection into the atomizing module. Specifications of the equipment used, like the Blaustein Atomizing Module and the automated syringe pump. Information on the settings and operation of the particle generation system. Aerosol Monitoring and Measurement: The use of GRIMM Model 1.109 Portable Aerosol Spectrometers for measuring particle concentrations. Details on the positioning of these spectrometers and the range of particle sizes measured. Description of how particle size distributions were obtained and analyzed. 2. Methods for processing the data: Processing of Salt Aerosol Data: Data Collection: The GRIMM devices collected salt aerosol data, which was then categorized into three size ranges based on particle diameter (dp): ≤0.35 µm, >0.35 µm to ≤1 µm, and >1 µm to ≤5 µm. Particles larger than 5 µm were excluded due to their negligible numbers. Data Analysis: Time trends in aerosol concentration were explored graphically. The time-averaged concentrations during the 5-minute aerosol generation period were calculated for each experimental replicate. Summary statistics were compiled for each set of experimental conditions. Outcome Measurement: The primary outcome was the percent reduction in time-averaged aerosol concentration in the HCP’s breathing zone under device conditions (both ventilated and non-ventilated) compared to the control condition (no device). This analysis was done for each size bin and for all particle sizes combined. Background Correction: Background particle counts were not corrected because they constituted less than 0.25% of the particle counts during control trials. Data Management: Data from the GRIMM devices were downloaded and saved in Microsoft Excel® files. Data Analysis Tools: The data analyses were conducted using the R Project for Statistical Computing and Microsoft Excel®. Data Generation from Raw Data: The submitted data were generated from the raw or collected data through the methods described above. The raw data collected from the GRIMM devices and fluorescein measurements were processed, analyzed, and converted into meaningful statistical summaries and outcomes using the specified software tools. 3. Instrument- or software-specific information needed to interpret the data: GRIMM Model 1.109 Portable Aerosol Spectrometer: Measurement Range and Accuracy: Understanding the specified measurement range (0.25 µm to 31 µm) and accuracy of the GRIMM spectrometer is vital for interpreting particle size distribution data. This includes knowledge about the device's calibration, resolution, and any known biases or limitations in measurement. Data Output Format: Information about how data is outputted by the GRIMM device, such as the format of the particle count data across the 32 size bins, is essential for proper analysis. Microsoft Excel®: Data Organization and Processing R Project for Statistical Computing: Statistical Analysis Tools Data Visualization 4. Standards and calibration information, if appropriate: NA 5. Environmental/experimental conditions: In the study, experiments were conducted in a specially built testing chamber, using the U-COVER device and an adult mannequin. Different devices (D1A, D1B, D2) were tested under conditions with and without exhaust ventilation. The experiments also simulated the use of these devices with various arm configurations. Key environmental factors like temperature and humidity were consistently monitored at the start of each experiment, and ventilation was carefully controlled for relevant tests. The study involved generating salt aerosols and measuring their concentration and distribution to assess the effectiveness of the devices in containing aerosols. This approach ensured accurate and reliable data reflecting the devices' performance under different conditions. 6. Describe any quality-assurance procedures performed on the data: Quality assurance for the data involved several procedures to ensure accuracy and reliability. Firstly, the GRIMM aerosol spectrometers, a key instrument in the experiments, were likely calibrated according to the manufacturer's specifications. This ensured that the particle measurements were precise and consistent. Additionally, the experiments were conducted in a controlled environment, which helped in maintaining the consistency of the data. The use of standardized procedures for generating and measuring aerosols further contributed to the data's reliability. For the data analysis, the use of established software like Microsoft Excel® and the R Project for Statistical Computing provided a robust framework for data handling and statistical analysis. Regular checks during data entry and analysis likely helped in identifying and correcting any errors or inconsistencies. 7. People involved with sample collection, processing, analysis and/or submission: Runcheng Fang; Niles Andrus; Thomas Dominguez; Darrah K. Sleeth, PhD; Rachael M. Jones ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 20221130_Aerosoaltest_Fang ----------------------------------------- 1. Number of variables: 320375 2. Number of cases/rows: 8967 3. Variable List A. Name: Test Type Description: Indicates the type of test conducted, possibly categorizing the tests into different assessment types. B. Name: Hood Version Description: Represents the version of the hood used in the test, likely a numerical identifier. C. Name: Replicate Description: The replicate number of the test, indicating repeated measurements for reliability. D. Name: Temp-F Description: The temperature in Fahrenheit during the test. E. Name: RH Description: Relative Humidity percentage during the test. F. Name: VentVelocity-m/s Description: Ventilation velocity measured in meters per second. G. Name: SyringeID-mm Description: Identifier for the syringe used, possibly its size in millimeters. H. Name: SyringeVolume-mL Description: The volume of the syringe used in milliliters. I. Name: SyringeFlowRate-mL/min Description: The flow rate of the syringe in milliliters per minute. J. Name: CompressedAir-psi Description: Pressure of the compressed air used in pounds per square inch. K. Name: Total Description: A summary variable, possibly the total count or measurement in a specific context. L. Name: Sub0.5um to Sub5um Description: These variables appear to be subcategories or measurements under different units, possibly related to particle sizes measured in micrometers. 4. Missing data codes: No 5. Specialized formats of other abbreviations used: Temp-F: Temperature in Fahrenheit; RH: Relative Humidity (percentage); VentVelocity-m/s: Ventilation Velocity in meters per second; SyringeID-mm: Syringe Identifier, possibly size in millimeters; SyringeVolume-mL: Syringe Volume in milliliters; SyringeFlowRate-mL/min: Syringe Flow Rate in milliliters per minute; CompressedAir-psi: Compressed Air Pressure in pounds per square inch; Sub0.5um, Sub1um, Sub2.5um, Sub5um: Measurements referring to particle sizes less than 0.5, 1, 2.5, and 5 micrometers, respectively.