Minia University

About: Minia University is a education organization based out in Minya, Egypt. It is known for research contribution in the topics: Population & Medicine. The organization has 4967 authors who have published 8986 publications receiving 108384 citations.

Electrochromic characterisation of electrochemically deposited nickel oxide films

Abstract: Electrochromic hydrated nickel oxide films have been cathodically deposited onto ITO-coated glass substrates from a solution of nickel sulphate and urea at room temperature. The in situ measurements of the response time during the colouring/bleaching process are reported. The dependence of the electrochromic properties on post-deposition heat treatment have been studied. A good optical modulation has been found for un-annealed samples, while samples annealed at higher temperatures showed smaller modulation. The extinction coefficient (k) has been computed from spectrophotometrically measured transmittance and reflectance. The structural characteristics as well as the surface morphology of some nickel oxide samples were investigated using X-ray diffraction and SEM analysis.

Pharmacological and natural products diversity of the brown algae genus Sargassum

Abstract: Sargassum (F. Sargassaceae) is an important seaweed excessively distributed in tropical and subtropical regions. Different species of Sargassum have folk applications in human nutrition and are considered a rich source of vitamins, carotenoids, proteins, and minerals. Many bioactive compounds chemically classified as terpenoids, sterols, sulfated polysaccharides, polyphenols, sargaquinoic acids, sargachromenol, and pheophytin were isolated from different Sargassum species. These isolated compounds and/or extracts exhibit diverse biological activities, including analgesic, anti-inflammatory, antioxidant, neuroprotective, anti-microbial, anti-tumor, fibrinolytic, immune-modulatory, anti-coagulant, hepatoprotective, and anti-viral activities. This review covers the literature from 1974 to 2020 on the genus Sargassum, and reveal the active components together with their biological activities according to their structure to create a base for additional studies on the clinical applications of Sargassum.

An analytical study of tribological parameters between piston ring and cylinder liner in internal combustion engines

Abstract: This paper presents a model to study the effect of piston ring dynamics on basic tribological parameters that affect the performance of internal combustion engines by using dynamics analysis softwa...