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In Spanish dialectology, the realization of coronal fricatives is one of the most prominent features distinguishing various dialect regions. The main three realizations are the phonemic distinction between /θ/ and /s/ (distinción), the presence of only alveolar [] (), or, less commonly, the presence of only a denti-alveolar [] that is similar to /θ/ ().
According to The Washington Post, phosphorus keeps "minerals from interfering with the cleaning process and prevent food particles from depositing again on dishes." [ 16 ] According to Time magazine, "One reason detergent makers have been using large amounts of phosphorus is that it binds with dirt and keeps it suspended in water, allowing the ...
People exposed to white phosphorus can suffer severe and sometimes deadly bone-deep burns. It can cause organs to shut down, and burns on just 10% of the body can be fatal, HRW said. Those who don ...
Sociohistorical linguistics, or historical sociolinguistics, is the study of the relationship between language and society in its historical dimension.A typical question in this field would, for instance, be: "How were the verb endings -s and -th (he loves vs. he loveth) distributed in Middle English society" or "When did people use French, when did they use English in 14th-century England?"
Guano (Spanish from Quechua: wanu) is the accumulated excrement of seabirds or bats. Guano is a highly effective fertilizer due to the high content of nitrogen, phosphate, and potassium, all key nutrients essential for plant growth. Guano was also, to a lesser extent, sought for the production of gunpowder and other explosive materials.
Phossy jaw, formally known as phosphorus necrosis of the jaw, was an occupational disease affecting those who worked with white phosphorus (also known as yellow phosphorus) without proper safeguards. It is also likely to occur as the result of use of chemical weapons that contain white phosphorus.
Nevertheless, most of the ancient people who were given the duty of healers through the usage of herbs were well accustomed with which plants from their local flora could be used to help the injured. This knowledge was learned and passed down after healers repeatedly used an herbal remedy for a specific wound with the belief that it promoted ...
Abu al-Qasim al-Zahrawi (936–1013 AD), better known in the west as Albucasis, is regarded as the father of modern surgery and is the most quoted surgeon of all times. Albucasis invented over 200 tools for use in surgery - many still in use today. Water and weight driven mechanical clocks, by Spanish Muslim engineers sometime between 900 ...