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sampling devices

См. также в других словарях:

  • Sampling (statistics) — Sampling is that part of statistical practice concerned with the selection of individual observations intended to yield some knowledge about a population of concern, especially for the purposes of statistical inference. Each observation measures… …   Wikipedia

  • Nyquist–Shannon sampling theorem — Fig.1: Hypothetical spectrum of a bandlimited signal as a function of frequency The Nyquist–Shannon sampling theorem, after Harry Nyquist and Claude Shannon, is a fundamental result in the field of information theory, in particular… …   Wikipedia

  • core sampling — ▪ mining       technique used in underground or undersea exploration and prospecting. A core sample is a roughly cylindrical piece of subsurface material removed by a special drill and brought to the surface for examination. Such a sample is… …   Universalium

  • undersea exploration — Introduction       the investigation and description of the ocean waters and the seafloor and of the Earth beneath. Primary objectives and accomplishments       Included in the scope of undersea exploration are the physical and chemical… …   Universalium

  • Chemcatcher — Chemcatcher® is a passive sampling device currently being used throughout the world to measure time weighted average (TWA) [1] concentrations of organic and heavy metal pollutants in water. The Chemcatcher® concept was developed[2] [3] by… …   Wikipedia

  • mineral processing — or ore dressing Mechanical treatment of crude ores to separate the valuable minerals. Mineral processing was at first applied only to ores of precious metals but later came to be used to recover other metals and nonmetallic minerals. It is also… …   Universalium

  • sample preparation — ▪ chemistry Introduction  in analytical chemistry (chemistry), the processes in which a representative piece of material is extracted from a larger amount and readied for analysis. Sampling and sample preparation have a unique meaning and special …   Universalium

  • Coal preparation plant — A coal washer in Eastern Kentucky A coal preparation plant (CPP) is a facility that washes coal of soil and rock, preparing it for transport to market. A CPP may also be called a coal handling and preparation plant (CHPP), prep plant, tipple, or… …   Wikipedia

  • Music-On-Demand — is a music distribution model conceived with the growth of two way computing, telecommunications and the Internet in the early 1990s. Primarily, high quality music is made available to purchase, access and play back using software on the Apple… …   Wikipedia

  • Music on demand — is a music distribution model conceived with the growth of two way computing, telecommunications and the Internet in the early 1990s. Primarily, high quality music is made available to purchase, access and play back using software on the Apple… …   Wikipedia

  • exploration — /ek spleuh ray sheuhn/, n. 1. an act or instance of exploring or investigating; examination. 2. the investigation of unknown regions. [1535 45; < L exploration (s. of exploratio) an examination, equiv. to explorat(us) searched out, examined (ptp …   Universalium

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