Skip to search formSkip to main content
You are currently offline. Some features of the site may not work correctly.

part per million (ppm)

Known as: ppms, Part per Million, Per Million 
A unit of proportion equal to 10E-6.
National Institutes of Health

Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
Review
2019
Review
2019
Summary Background People with severe mental illnesses such as schizophrenia are three times more likely to smoke than the wider… Expand
  • table 1
  • table 2
  • table 3
  • table 4
Review
2019
Review
2019
Micro- and nano-sensors lie at the heart of critical innovation in fields ranging from medical to environmental sciences. In… Expand
  • figure 1
  • figure 2
  • figure 3
  • figure 4
  • figure 5
Review
2019
Review
2019
Background: With breast implant–associated anaplastic large cell lymphoma (BIA-ALCL) now accepted as a unique (iatrogenic… Expand
Review
2019
Review
2019
A comprehensive review on the development and state of the art of colorimetric and fluorometric sensor arrays is presented… Expand
  • figure 1
  • figure 2
  • figure 4
  • figure 3
  • figure 5
Review
2019
Review
2019
There is an ever-growing demand for measuring respiratory variables during a variety of applications, including monitoring in… Expand
  • figure 1
  • figure 2
  • table 1
  • figure 3
  • table 2
Review
2019
Review
2019
Abstract Catalytic converters mitigate carbon monoxide, hydrocarbon, nitrogen oxides and particulate matter emissions from… Expand
  • table 1
  • figure 1
  • figure 2
  • figure 3
  • figure 4
Review
2019
Review
2019
Human impacts prior to the Industrial Revolution are not well constrained. We investigate whether the decline in global… Expand
  • figure 1
  • table 1
  • figure 2
  • figure 3
  • figure 4
Review
2018
Review
2018
Citrus fruits have been a commercially important crop for thousands of years. In addition, Citrus essential oils are valuable in… Expand
  • table 1
  • table 2
  • table 3
  • table 3
  • table 3
Review
2018
Review
2018
Spinal cord atrophy (SCA) is an important emerging outcome measure in multiple sclerosis (MS); however, there is limited… Expand
Review
2018
Review
2018
Abstract1H NMR spectra from urine can yield information-rich data sets that offer important insights into many biological and… Expand
  • figure 1
  • figure 2
  • figure 3
  • figure 4
  • table 4