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part per million (ppm)

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

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2 relations
Clinical Data Interchange Standards Consortium TerminologyICH Unit of Measure Terminology

Papers overview

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Highly Cited
2009
Highly Cited
2009
[(NHC)Au(I)]-catalyzed acid-free alkyne hydration at part-per-million catalyst loadings.
A highly efficient [(NHC)Au(I)]-based (NHC = N-heterocyclic carbene) catalytic system for the hydration of an array of alkynes… 
Highly Cited
2005
Highly Cited
2005
Projecting the number of patients with end-stage renal disease in the United States to the year 2015.
The size of the prevalent ESRD population in the United States increased dramatically during the 1990s, from 196,000 in 1991 to… 
Highly Cited
2002
Highly Cited
2002
Stable and highly sensitive gas sensors based on semiconducting oxide nanobelts
Gas sensors have been fabricated using the single-crystalline SnO2 nanobelts. Electrical characterization showed that the… 
Highly Cited
2002
Highly Cited
2002
Chemical precipitation of heavy metals from acid mine drainage.
Highly Cited
2001
Highly Cited
2001
Gold Nanoparticle-Based Sensing of “Spectroscopically Silent” Heavy Metal Ions
A simple colorimetric technique for the detection of small concentrations of aqueous heavy metal ions, including toxic metals… 
Highly Cited
2001
Highly Cited
2001
Impedance measurements to study the antimicrobial activity of essential oils from Lamiaceae and Compositae.
Review
1995
Review
1995
Quantitation of HIV-1 RNA in Plasma Predicts Outcome after Seroconversion
The course of infection with human immunodeficiency virus type 1 (HIV-1) varies considerably. Although the median interval… 
Highly Cited
1985
Highly Cited
1985
Evidence from polar ice cores for the increase in atmospheric CO2 in the past two centuries
Precise and continuous measurements of atmospheric CO2 concentration were first begun in 1958 and show a clear increase from 315… 
Highly Cited
1978
Highly Cited
1978
Atmospheric reactions of polycyclic aromatic hydrocarbons: facile formation of mutagenic nitro derivatives.
Directly active mutagens are formed on exposure of the promutagen benzo[a]pyrene to gaseous pollutants in smog. In simulated… 
Review
1964
Review
1964
A PEPSIN PANCREATIN DIGEST INDEX OF PROTEIN QUALITY EVALUATION.
A pepsin pancreatiti digest index was devised for a rapid, accurate estimation of protein quality. The index was calculated from… 
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