The performance of electrocoagulation using iron electrodes for the removal of hexavalent chromium from synthetic aqueous solutions and actual industrial electroplating wastewater was studied. Parameters affecting the electrocoagulation process, such as initial pH, applied current density, initial metal ion concentration, COD and time of electroprocessing were investigated. The optimum pH was f...

We investigated the effects of a pulsed electric field (PEF) treatment on microbial inactivation and the physical properties of low-fat milk. Milk inoculated with Escherichia coli, Saccharomyces cerevisiae, or Lactobacillus brevis was supplied to a pilot-scale PEF treatment system at a flow rate of 30 L/h. Pulses with an electric field strength of 10 kV/cm and a pulse width of 30 μs were applie...

We study the autoreducibility and mitoticity of complete sets for NP and other complexity classes, where the main focus is on logspace reducibilities. In particular, we obtain: • For NP and all other classes of the PH: each ≤ m -complete set is ≤ log T -autoreducible. • For P, ∆pk, NEXP: each ≤ m -complete set is a disjoint union of two ≤ log 2-tt-complete sets. • For PSPACE: each ≤pdtt-complet...

A sensitive, reproducible and accurate spectrophotometric method has been developed for determining amitriptyline hydrochloride (ATH) from its pharmaceutical formulation based on solvent extraction into chloroform of the product formed with 1, 2-naphthoquinon-4-sulphonate. The reaction and extraction was complete and quantitative at pH 1.3. The Beer’s law of yellow colored species is obeyed in ...

leptinotarsa decemlineata (say) and lasioderma serricorne f. are destructive pre-harvest and post-harvest pests of many plants in the family solanaceae, and stored foodstuffs and non-food items, respectively. in this study, some biochemical characteristics of cellulase in the larval digestive tract of these pests were studied. endo-β-1, 4-glucanase activity was measured against the substrate ca...

Acetophenone 2’, 4’dihydroxy semicarbazone [A24DHS], a new analytical reagent is proposed as a sensitive and selective spectrophotometric reagent for Vanadium (V). The reagent A24DHS is synthesized in the laboratory and characterized by NMR, IR and elemental analysis. A selective spectrophotometric method is presented for the trace determination of Vanadium using A24DHS as spectrophotometric re...