In the present study, antioxidant activity of methanolic extracts of the leaves of seven Egyptian Cassia species was investigated using two methods, the phosphomolyb-date method and 1,1 diphenyl-2-picrylhydrazyl radical (DPPH) scavenging activity method.· The results revealed that C. glauca is the most potent species and that the activity of other plant species decreases in the following order:...

Studies have been conducted to find Materials with microstructures which Minimize the formation of blisters. A promising class of materials appears to be sintered metal powder with small average grain sizes and low atomic number Z. Studies of the surface erosion of sintered aluminum powder (SAP 895) and of aluminum held at AOO'C due to blistering by 100 keV helium ions have been conducted and t...

Inorganic arsenicals have been used in agriculture as pesticides or defoliants for many years and, in localized areas, oxides of arsenic have contaminated soils as a result of fallout from ore-smelting operations and coal-fired power plants. Use of inorganic arsenicals is no longer permitted in most agricultural operations, and recent air pollution controls have markedly reduced contamination f...

Aluminum (Al) is the third most abundant metal in earth crust, whose chemical form is mainly dependent on soil pH. The most toxic form of Al with respect to plants is Al3+, which exists in soil pH <5. Acidic soil significantly limits crop production mainly due to Al3+ toxicity worldwide, impacting approximately 50% of the world's arable land (in North-Eastern India 80% soil are acidic). Al3+ to...

An alternative laterite nickel ore processing using sulfuric acid as a leaching agent to produce class 1 raw material for electric vehicle batteries produces natrojarosite residue by-product during the precipitation of iron and aluminum step. The contained high sulfur, which is challenging utilize an source steel manufacturing since sulfur can contaminate product. This study focuses on eliminat...

Coloring of anodized aluminum（alumite）with organic pigment was investigated. After alumite prepared by anodic oxidation aluminum in oxalic acid solution, pore-widening done with solution at 323 K（50 ℃）. Then iron or nickel metal deposited electrochemically pores. Pigment particles dispersed surfactant an azobenzene moiety（AZPEG）were the pores reduction AZPEG and nickel.