abu abdullah mohammad ibn musa al-khawarizmi was born at khawarizm (kheva), south of aral sea. very little is known about his early life, except for the fact that his parents had migrated to a place south of baghdad. the exact dates of his birth and death are also not known, but it is established that he flourished under al- mamun at baghdad through 813-833 and probably died around 840 a.d. kha...

Abstract This study aims to determine some physical and chemical factors their impact on the abundance distribution of submersible aquatic plants for four selected stations in southern marshes, two Eastern Hammar marshes (Al-Burga Al-Sada) Al-Chebiyesh (Abu-Sobat Al-Baghdadia). Water plant samples were collected seasonally during year 2018. The water temperature, electrical conductivity, depth ...

abu hafs al-haddad was one of the masters and founders of malāmatiyya (or malamatis) in nishapur in the 9th century (about 3rd hijri century). through a deep study of ancient sources, in present article, we have rendered some valuable details about his life and family, some of the aspects that reflect the main lines of his thoughts have been made clear, on one hand; and the principles of malāma...

Microbial acquisition of nutrients in vivo is a fundamental aspect of infectious diseases, and is a potential target for antimicrobial therapy. Part of the innate host defense against microbial infection is nutritional restriction of access to sources of host nutrients (Abu Kwaik and Bumann, 2013; Eisenreich et al., 2013). Despite this host nutritional restriction, there has been a long held pr...

In this paper, we study the existence of Diophantine quadruples with the property D(z) in the ring Z[ √−2 ]. We find several new polynomial formulas for Diophantine quadruples with the property D(a+ b √−2 ), for integers a and b satisfying certain congruence conditions. These formulas, together with previous results on this subject by Abu Muriefah, Al-Rashed and Franušić, allow us to almost com...