Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Indicators02:39

Indicators

60.7K
Certain organic substances change color in dilute solution when the hydronium ion concentration reaches a particular value. For example, phenolphthalein is a colorless substance in any aqueous solution with a hydronium ion concentration greater than 5.0 × 10−9 M (pH < 8.3). In more basic solutions where the hydronium ion concentration is less than 5.0 × 10−9 M (pH > 8.3), it is red or pink. Substances such as phenolphthalein, which can be used to determine the pH of a solution, are...
60.7K
Glassware Calibration01:11

Glassware Calibration

1.4K
Accurate calibration of glassware, such as volumetric flasks, pipettes, and burettes, is essential to ensure accurate measurements in the analytical laboratory. Calibration helps maintain consistency across measurements and prevents errors arising from inaccurate volumes.
Volumetric flasks: Volumetric flasks are designed to prepare aqueous solutions of precise volumes accurately with a calibration line on the neck. To calibrate a volumetric flask, it is important to fill it with distilled...
1.4K
Instrument Calibration01:12

Instrument Calibration

755
Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...
755
Methods of Documentation I: Source-Oriented Records01:18

Methods of Documentation I: Source-Oriented Records

1.7K
Source-oriented records, or SOR, are medical record-keeping organized by the data source. The SOR system was first developed in the mid-1900s to organize the growing patient data in hospitals and other healthcare facilities.
In an SOR, each discipline involved in patient care maintains a separate medical record section. This record-keeping method enables easy tracking of patient progress and ensures healthcare staff have access to up-to-date information.
Key Attributes include the following:
1.7K
Impact of Groups on Groups01:19

Impact of Groups on Groups

247
Social psychologists analyze how groups influence one another, shaping social structures and interactions through both cooperation and competition. These dynamics manifest in various ways, ranging from economic partnerships to intergroup conflicts that shape societal structures and perceptions.Cooperation and Competition in Intergroup RelationsIntergroup relationships vary across contexts, sometimes fostering cooperation and mutual benefit while at other times leading to conflict and...
247
Calibration Curves: Correlation Coefficient01:10

Calibration Curves: Correlation Coefficient

4.9K
In a linear calibration curve, there is a value called the calibration coefficient, denoted by 'r,' which measures the strength and the direction of association between two variables. The correlation coefficient value ranges from −1 to +1. A value of +1 indicates a perfect positive linear correlation, −1 denotes a perfect negative correlation, and 0 implies no correlation between the two variables. A positive correlation value establishes that as one variable increases, the...
4.9K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Wildfire Smoke and Cardiorespiratory Emergency Visits in New Mexico 2022: Sensitivity to Exposure Estimates and Referent Periods.

GeoHealth·2026
Same author

Maternal ambient air pollution exposure and risk of stillbirth in Georgia, USA.

Environmental epidemiology (Philadelphia, Pa.)·2026
Same author

The Impact of Fire Emissions Inputs on Smoke Plume Dispersion Modeling Results.

Fire (Basel, Switzerland)·2026
Same author

Modeling Daily Plume Specific Smoke Concentrations for Health Effects Studies with Estimates of Fire Size, Plume Age, and Fuel Type.

ACS ES&T air·2026
Same author

Source apportionment of fine particulate matter (PM<sub>2.5</sub>) personal exposures: findings from the Household Air Pollution Intervention Network (HAPIN) study in rural Guatemala.

Journal of exposure science & environmental epidemiology·2026
Same author

Linking mixtures of air pollution exposures and preterm birth with a self-organizing map.

Journal of exposure science & environmental epidemiology·2026

Related Experiment Video

Updated: Feb 1, 2026

An Open-Source Virtual Reality System for the Measurement of Spatial Learning in Head-Restrained Mice
08:59

An Open-Source Virtual Reality System for the Measurement of Spatial Learning in Head-Restrained Mice

Published on: March 3, 2023

2.8K

Spatial PM2.5 mobile source impacts using a calibrated indicator method.

Xinxin Zhai1, James A Mulholland1, Mariel D Friberg1

  • 1a School of Civil and Environmental Engineering , Georgia Institute of Technology , Atlanta , GA, USA.

Journal of the Air & Waste Management Association (1995)
|December 1, 2018
PubMed
Summary

This study enhances methods to estimate fine particulate matter (PM2.5) from vehicles, improving health impact assessments. The new approach provides detailed spatial and temporal data on mobile source pollution.

More Related Videos

Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments
08:40

Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments

Published on: January 20, 2022

4.9K
The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
05:15

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition

Published on: February 19, 2018

11.4K

Related Experiment Videos

Last Updated: Feb 1, 2026

An Open-Source Virtual Reality System for the Measurement of Spatial Learning in Head-Restrained Mice
08:59

An Open-Source Virtual Reality System for the Measurement of Spatial Learning in Head-Restrained Mice

Published on: March 3, 2023

2.8K
Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments
08:40

Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments

Published on: January 20, 2022

4.9K
The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
05:15

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition

Published on: February 19, 2018

11.4K

Area of Science:

  • Environmental Science
  • Atmospheric Chemistry
  • Public Health

Background:

  • Motor vehicles are significant sources of fine particulate matter (PM2.5), linked to adverse health outcomes.
  • Traditional receptor models for source impact assessment are constrained by limited observational data.
  • Accurate spatiotemporal estimation of mobile source impacts on PM2.5 is crucial for health studies.

Purpose of the Study:

  • To develop an enhanced approach for estimating temporally and spatially resolved mobile source impacts on PM2.5.
  • To improve upon the integrated mobile source indicator (IMSI) method using updated data and calibration techniques.
  • To provide reliable data for investigating the health effects of traffic pollution.

Main Methods:

  • Extended the integrated mobile source indicator (IMSI) method.
  • Generated spatially resolved indicators using fused Community Multiscale Air Quality (CMAQ) model simulations and observations for elemental carbon (EC), carbon monoxide (CO), and nitrogen oxide (NOx) at 4 km resolution.
  • Utilized spatially resolved emissions and spatially calibrated unitless indicators with Chemical Mass Balance (CMB) model results for daily mobile source impact estimation.

Main Results:

  • Estimated daily total mobile source impacts on PM2.5, and separate gasoline and diesel vehicle impacts, at 12 km and 4 km resolutions for Georgia.
  • Demonstrated high temporal correlations (R = 0.59–0.88) between estimated mobile source impacts and daily CMB results.
  • Found that total mobile source impacts showed higher correlation and lower error compared to separate gasoline and diesel source impacts against observation-based CMB estimates.

Conclusions:

  • The enhanced approach provides accurate, spatially resolved mobile source impacts comparable to observation-based estimates.
  • This method effectively estimates daily mobile source impacts on PM2.5 using readily available air pollutant data and modeling.
  • The improved estimates are suitable for health effect assessments related to traffic pollution.