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11 godz. temu · An air quality index (AQI) is an indicator developed by government agencies [1] to communicate to the public how polluted the air currently is or how polluted it is forecast to become. [2] [3] As air pollution levels rise, so does the AQI, along with the associated public health risk.Children, the elderly and individuals with respiratory or cardiovascular problems are typically the first ...
11 godz. temu · The waste hierarchy refers to the "3 Rs" Reduce, Reuse and Recycle, which classifies waste management strategies according to their desirability in terms of waste minimisation.The waste hierarchy is the bedrock of most waste minimization strategies. The aim of the waste hierarchy is to extract the maximum practical benefits from products and to generate the minimum amount of end waste; see ...
11 godz. temu · The OECD is the successor organization to the Organisation for European Economic Co-operation (OEEC),[ 15] established in April 1948 among the European recipients of Marshall Plan aid for the reconstruction of Europe after World War II. [ 16][ 17][ 18] Only Western European states were members of the OEEC, whose primary function was the ...
11 godz. temu · Mining of sulfur from a deposit at the edge of Ijen's crater lake, Indonesia. Mining is the extraction of valuable geological materials and minerals from the surface of the Earth.Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory. Ores recovered by mining include metals, coal, oil shale ...
11 godz. temu · Om (or Aum) (listen ⓘ; Sanskrit: ॐ, ओम्, romanized: Oṃ, Auṃ, ISO 15919: Ōṁ) is a symbol representing a sacred sound, syllable, mantra, and an invocation in Hinduism. [1] [2] Its written representation is the most important symbol of Hinduism. [3]It is the essence of the supreme Absolute, [2] consciousness, [4] [5] [6] Ātman, Brahman, or the cosmic world.
11 godz. temu · Pyrolysis is most commonly used in the treatment of organic materials. It is one of the processes involved in charring of the wood [2] or pyrolysis of biomass. In general, pyrolysis of organic substances produces volatile products and leaves char, a carbon-rich solid residue.Extreme pyrolysis, which leaves mostly carbon as the residue, is called carbonization.
11 godz. temu · Beauty, together with art and taste, is the main subject of aesthetics, one of the major branches of philosophy. [3] [4] Beauty is usually categorized as an aesthetic property besides other properties, like grace, elegance or the sublime.[5] [6] [7] As a positive aesthetic value, beauty is contrasted with ugliness as its negative counterpart.Beauty is often listed as one of the three ...
