Look up PPM or ppm in Wiktionary, the free dictionary. PPM may refer to: Planned preventive maintenance Project portfolio management Public performance...

no associated units of measurement. Commonly used are parts-per-million – ppm, 10−6 parts-per-billion – ppb, 10−9 parts-per-trillion – ppt, 10−12 parts-per-quadrillion...

format (PBM) portable graymap format (PGM) portable pixmap format (PPM) PBM, PGM and PPM, sometimes collectively referred to as the portable anymap format...

Prediction by partial matching (PPM) is an adaptive statistical data compression technique based on context modeling and prediction. PPM models use a set of previous...

116 ppm Calgary, Alberta: 165 ppm[citation needed] Regina, Saskatchewan: 496 ppm Saskatoon, Saskatchewan: 160–180 ppm Winnipeg, Manitoba: 77 ppm Toronto...

atmosphere at 421 parts per million (ppm), or about 0.042% (as of May 2022) having risen from pre-industrial levels of 280 ppm or about 0.028%. Burning fossil...

The Portable People Meter (PPM), also known as the Nielsen Meter, is a system developed by Arbitron (now Nielsen Audio) to measure how many people are...

AD – Democratic Alliance and also included the People's Monarchist Party (PPM). Marcelo Rebelo de Sousa led an attempt to establish a new Democratic Alliance...

range of about 800 ppm. For organofluorine compounds the range is narrower, being about −50 to −70 ppm (for CF3 groups) to −200 to −220 ppm (for CH2F groups)...

The 2.5 ppm + 3.5 Hz signal will be split into 2.5 ppm + 7 Hz and 2.5 ppm. The 2.5 ppm − 3.5 Hz signal will be split into 2.5 ppm and 2.5 ppm − 7 Hz....

The concentration of carbon dioxide (CO2) in the atmosphere reached 427 ppm (0.0427%) on a molar basis in 2024, representing 3341 gigatonnes of CO2....

000 to 10,000 ppm (0.3–1%); and in highly saline water is 10,000 to 35,000 ppm (1–3.5%). Seawater has a salinity of roughly 35,000 ppm, equivalent to...

The PPM Star Catalogue (Positions and Proper Motions Star Catalogue) is the successor of the SAO Catalogue. It contains precise positions and proper motions...

able to identify it. 10–20 ppm is the borderline concentration for eye irritation. 50–100 ppm leads to eye damage. At 100–150 ppm the olfactory nerve is paralyzed...

programme meter (PPM) is an instrument used in professional audio that indicates the level of an audio signal. Different kinds of PPM fall into broad categories:...

People's Monarchist Party (PPM) since 2017. He was a member of the Lisbon Municipal Assembly between 2009 and 2013, nominated by the PPM as part of the "Lisboa...

05 ppm formaldehyde for hardwood plywood, 0.09 ppm formaldehyde for particleboard, 0.11 ppm formaldehyde for medium-density fiberboard, and 0.13 ppm formaldehyde...

for each chemical element shown as mg/kg, or parts per million (ppm) by mass (10,000 ppm = 1%). The Earth's crust is one "reservoir" for measurements of...

PPM America, Inc. is a U.S.-based investment management firm that is registered with the SEC as an investment advisor. It managed $9.7 billion assets...

exhibits resonances at 2.91 ppm (m), 1.75 ppm (m), and 0.63 ppm (m) at an intensity of 22% of the reference resonance at 0 ppm. Sodium trimethylsilyl propionate...

Pulse-position modulation (PPM) is a form of signal modulation in which M message bits are encoded by transmitting a single pulse in one of 2 M {\displaystyle...

median lethal concentration (LC50) in air of more than 200 parts per million (ppm) but not more than 2,000 parts per million by volume of gas or vapor, or...

Progressive Party of Maldives (Dhivehi: ޕްރޮގްރެސިވް ޕާރޓީ އޮފް މޯލްޑިވްސް, PPM), was a political party in the Maldives. The stated goal of the party was...

Mary Allin Travers (November 9, 1936 – September 16, 2009) was an American singer who found fame as a member of the 1960s folk trio Peter, Paul and Mary...

distribution comes with PPM included, other distributions can use PPM after acquiring and building PPM module from CPAN. PPM uses so called “PPM Repositories”,...

Diesel, 50 ppm and 500 ppm on most areas and 1800 ppm in remote areas. Since January 2013, the 10 ppm or EURO V Diesel replaced the 50 ppm Diesel, which...

million (ppm), compared to iron with 50,000 ppm, copper with 70 ppm, lead with 16 ppm, arsenic with 5 ppm, silver with 0.1 ppm, and gold with 0.005 ppm. Ancient...

parts per million calcium carbonate ( ppm CaCO 3 or grams CaCO 3 per litre|mg/L). One dKH is equal to 17.848 mg/L (ppm) CaCO 3, e.g. one dKH corresponds to...

chlorine, and detectable by many people at concentrations of as little as 0.1 ppm in air. Ozone's O3 structure was determined in 1865. The molecule was later...

shows a triplet at δ(α-C) = 150 ppm, δ(β-C) = 124 ppm and δ(γ-C) = 136 ppm, whereas benzene has a single line at 129 ppm. All shifts are quoted for the...