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

Decreasing Function01:27

Decreasing Function

299
A decreasing function describes a relationship where the output consistently declines as the input increases. This means that for any two input values, if one is greater than the other, the corresponding output is smaller. Mathematically, a function f is decreasing on an interval I if for every x1 < x2​ in I, f (x1) > f (x2). This type of behavior is visually identified on a graph that slopes downward from left to right.The nature of a function can be analyzed by calculating...
299
Design Example: Automobile Ignition System01:14

Design Example: Automobile Ignition System

554
The automobile's ignition system plays a vital role by ensuring the timely ignition of the fuel-air mixture in each cylinder. This ignition is facilitated by a spark plug, which is composed of two electrodes separated by an air gap. A spark forms across this air gap when a substantial voltage is generated between the electrodes, leading to the ignition of the fuel.
One can generate a large voltage using a car battery of 12 volts with the help of inductors. Inductors are known for opposing...
554
Emission Spectra02:39

Emission Spectra

76.4K
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
76.4K
Decreased Body Temperature01:29

Decreased Body Temperature

1.1K
A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
1.1K
Decreased pulse rate01:14

Decreased pulse rate

905
Bradycardia is a medical condition in which the heart rate is slower than normal. It occurs when the heart's natural pacemaker, the sinus node, generates slower electrical impulses than the standard rhythm. In adults, bradycardia is diagnosed when the pulse rate falls below 60 beats per minute, indicating a deviation from the normal heart rate range.
There are specific risk factors that can elevate the likelihood of developing bradycardia. Advanced age is a significant factor, with...
905
Washing, Drying, and Ignition of Precipitates00:52

Washing, Drying, and Ignition of Precipitates

6.8K
After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
6.8K

You might also read

Related Articles

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

Sort by
Same author

Dramatic increase in ecosystem respiration causes record-breaking atmospheric CO<sub>2</sub> growth rate in 2024.

Nature communications·2026
Same author

Gazing into the flames: A guide to assessing the impacts of climate change on landscape fire.

Science advances·2025
Same author

Landscape fire emissions from the 5<sup>th</sup> version of the Global Fire Emissions Database (GFED5).

Scientific data·2025
Same author

Subtropical southern Africa fire emissions of nitrogen oxides and ammonia obtained with satellite observations and GEOS-Chem.

Environmental science: atmospheres·2025
Same author

Particles emitted from smouldering peat: size-resolved composition and emission factors.

Environmental science: atmospheres·2025
Same author

Updated Smoke Exposure Estimate for Indonesian Peatland Fires Using a Network of Low-Cost PM<sub>2.5</sub> Sensors and a Regional Air Quality Model.

GeoHealth·2024

Related Experiment Video

Updated: Feb 5, 2026

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters
08:42

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters

Published on: April 16, 2015

20.7K

Fine Particle Emissions From Tropical Peat Fires Decrease Rapidly With Time Since Ignition.

C Roulston1, C Paton-Walsh1, T E L Smith2,3

  • 1Centre for Atmospheric Chemistry University of Wollongong Wollongong New South Wales Australia.

Journal of Geophysical Research. Atmospheres : JGR
|September 1, 2018
PubMed
Summary
This summary is machine-generated.

Tropical peat fires in Southeast Asia release significant fine particulate matter (PM2.5). Newly ignited fires emit up to three times more PM2.5 than previously estimated, posing a greater immediate health risk.

Keywords:
PM2.5emissionsfirepeat

More Related Videos

Wind Tunnel Experiments to Study Chaparral Crown Fires
09:27

Wind Tunnel Experiments to Study Chaparral Crown Fires

Published on: November 14, 2017

10.1K
3D Printing - Evaluating Particle Emissions of a 3D Printing Pen
06:44

3D Printing - Evaluating Particle Emissions of a 3D Printing Pen

Published on: October 9, 2020

9.1K

Related Experiment Videos

Last Updated: Feb 5, 2026

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters
08:42

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters

Published on: April 16, 2015

20.7K
Wind Tunnel Experiments to Study Chaparral Crown Fires
09:27

Wind Tunnel Experiments to Study Chaparral Crown Fires

Published on: November 14, 2017

10.1K
3D Printing - Evaluating Particle Emissions of a 3D Printing Pen
06:44

3D Printing - Evaluating Particle Emissions of a 3D Printing Pen

Published on: October 9, 2020

9.1K

Area of Science:

  • Environmental Science
  • Atmospheric Chemistry
  • Ecology

Background:

  • Southeast Asia frequently experiences peatland fires, causing severe regional haze and high fine particulate matter (PM2.5) concentrations.
  • Previous studies indicated high PM2.5 emissions from tropical peat fires, but new research suggests these estimates may be significantly underestimated.

Purpose of the Study:

  • To report higher PM2.5 emission factors from newly ignited tropical peat fires in Malaysia.
  • To provide the first mechanistic explanation for the variability in PM2.5 emission factors from peat fires.
  • To offer updated recommendations for PM2.5 emission factors for climate and air quality modeling.

Main Methods:

  • Conducted field measurements of PM2.5 emission factors at newly ignited peat fires in Malaysia.
  • Performed laboratory measurements of burning peat to analyze the fire progression and ash layer effects.
  • Analyzed the relationship between ash layer buildup and PM2.5 emission rates.

Main Results:

  • Measured PM2.5 emission factors at newly ignited peat fires were higher than previously reported, potentially underestimating emissions by a factor of three or more.
  • Demonstrated that the buildup of a surface ash layer during peat fires causes a decrease in PM2.5 emissions over time.
  • Found that peat fires are most hazardous in terms of aerosol emissions during their initial ignition phase.

Conclusions:

  • Current estimates of PM2.5 emissions from tropical peat fires may be significantly underestimated.
  • The variability in PM2.5 emission factors is mechanistically explained by the formation of an ash layer.
  • Updated emission factor recommendations are provided for newly ignited fires (58 g/kg, decreasing by 9%/day) and average conditions (24 g/kg) to improve air quality and climate models.