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Culturally, cleanliness is usually a good quality, as indicated by the aphorism: "Cleanliness is next to Godliness", [1] and may be regarded as contributing to other ideals such as health and beauty. The concept of cleanliness emphasizes an ongoing procedure or set of habits for the purpose of maintenance and prevention.
The terms cleanliness and hygiene are often used interchangeably, which can cause confusion. In general, hygiene refers to practices that prevent spread of disease-causing organisms. Cleaning processes (e.g., handwashing [1]) remove infectious microbes as well as dirt and soil, and are thus often the means to achieve hygiene.
Purity (Arabic: طهارة, ṭahāra(h) [1]) is an essential aspect of Islam.It is the opposite of najāsa, the state of being ritually impure.It is achieved by first removing physical impurities (for example, urine) from the body, and then removing ritual impurity through wudu (usually) or ghusl.
ISO/DIS 14644-1.2(2014): Classification of air cleanliness by particle concentration [4] ISO 14644-2: Specifications for testing and monitoring to prove continued compliance with ISO 14644-1 [3] ISO/DIS 14644-2.2(2014): Monitoring to provide evidence of cleanroom performance related to air cleanliness by particle concentration [5]
Cleanness (Middle English: Clannesse) is a Middle English alliterative poem written in the late 14th century. Its unknown author, designated the Pearl poet or Gawain poet, also appears, on the basis of dialect and stylistic evidence, to be the author of Sir Gawain and the Green Knight, Pearl, and Patience, and may have also composed St. Erkenwald.
Purity and Danger: An Analysis of Concepts of Pollution and Taboo is a 1966 book by the anthropologist and cultural theorist Mary Douglas.It is her best known work. In 1991 the Times Literary Supplement listed it as one of the hundred most influential non-fiction books published since 1945.
Uncleanliness threatens holiness; [26] Chapters 11–15 review the various causes of uncleanliness and describe the rituals which will restore cleanliness; [27] one is to maintain cleanliness through observation of the rules on sexual behaviour, family relations, land ownership, worship, sacrifice, and observance of holy days.
The Harvard sentences, or Harvard lines, [1] is a collection of 720 sample phrases, divided into lists of 10, used for standardized testing of Voice over IP, cellular, and other telephone systems. They are phonetically balanced sentences that use specific phonemes at the same frequency they appear in English.