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Paper chemicals designate a group of chemicals that are used for paper manufacturing, or modify the properties of paper. These chemicals can be used to alter the paper in many ways, including changing its color and brightness, or by increasing its strength and resistance to water. [1] The chemicals can be defined on basis of their usage in the ...
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Afrikaans; العربية; Aragonés; Asturianu; تۆرکجه; বাংলা; 閩南語 / Bân-lâm-gú; Башҡортса; Беларуская ...
Paper is a thin sheet material produced by mechanically or chemically processing cellulose fibres derived from wood, rags, grasses, herbivore dung, or other vegetable sources in water.
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Acidic paper is paper which was manufactured using acidic substances. [1] Widely used since the mid-nineteenth century, its pages become yellow within years, extremely brittle over decades, and eventually unreadable in the library and archive collections intended to preserve them. [ 2 ]
The Vietnamese Wikipedia (Vietnamese: Wikipedia tiếng Việt) is the Vietnamese-language edition of Wikipedia, a free, publicly editable, online encyclopedia supported by the Wikimedia Foundation. Like the rest of Wikipedia, its content is created and accessed using the MediaWiki wiki software.
The construction of the Bãi Bằng paper mill was controversial. [1] This project was signed as a cooperation between Sweden and then North Vietnam in 1969, with construction beginning in 1975. The construction was evaluated by the Chr. Michelsen Institute, an independent, non-profit research foundation based in Norway .