In this paper, a novel procedure is proposed for comprehensively recovering zinc fluoride (ZnF2), manganese fluorides [MnFx(x = 2, 3)], dioxide (MnO2), and carbon powder from the electrode of spent alkaline batteries. Firstly, hydrofluoric acid (HF) leaching conducted on Secondly, potassium permanganate (KMnO4) introduced into leachate to selectively precipitate (Mn) ions recover MnO2. Subseque...

MnO2 nanoparticle enriched poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires are fabricated by simply soaking the PEDOT nanowires in potassium permanganate (KMnO4) solution. The structures of these MnO2 nanoparticle enriched PEDOT nanowires are characterized by SEM and TEM, which show that the MnO2 nanoparticles have uniform sizes and are finely dispersed in the PEDOT matrix. The chemical cons...

Bitter gourd is a widely consumed cucurbitaceous vegetable rich in several nutrients and phytochemicals. The fruit also used traditional medicine systems to cure variety of ailments. However, bitter has very short postharvest life 3-4 days at ambient conditions, due which it suffers significant loss after harvest. In the present study, with aim extend storage life, fruits were packed corrugated...

Nitro-based compounds are the direct precursors of trichloronitromethane during chlorination disinfection. Two nitro-based pharmaceuticals ranitidine and nizatidine were selected as model compounds to assess the effect of oxidation on the removal of nitro-based pharmaceuticals, as well as the reduction of their trichloronitromethane formation potentials (TCNMFPs). The four oxidants were ozone (...

The fixation of rat pancreas in potassium permanganate according to Luft (1) imparts a brown coloration and a strong ultraviolet absorption to the cytoplasm of the exocrine cells, but only a weak one to the nuclei. Within the latter an even paler zone surrounding the nucleoli can be observed. After the removal of the stain by means of oxalic acid, ultraviolet microscopy and the Feulgen technic ...

During the early phases of tissue sectioning for electron microscopy, virtually all of the standard cytological fixatives were tried. Of these, osmium tetroxide appeared to give the best preservation, and this was further improved by buffering the fixative solution at a slightly alkaline pH (Palade (1)). A variant developed by Dalton (2) contains Os04 in a chromate-dichromate system. Formalin h...

Objective. Total antioxidant capacity in serum is determined by the total mass of antioxidant substances and the antioxidant capacity per unit mass (average activity). The purpose of this study was to develop a method to determine the mass of antioxidant substances and average activity in human serum. Methods. Specimens of serum were collected from 100 subjects each from two different age group...

Saprolegniosis are one of the most important oomycetes affecting freshwater fish worldwide. It leads to huge losses in fish farms due to their massive destruction to the fish epidermis leading to sever heamodilution and death, yet little literature studied the oxidative stress response regarding the saprolegniosis. Nile tilapia fish were subcutaneously abraded and divided into four groups: cont...

Frankia vesicles are differentiated during nitrogen starvation; they contain nitrogenase whether produced by free-living frankiae or by frankiae in actinorhizal root nodules. Vesicles are surrounded by envelopes of several monolayers of uncharacterized lipid. It has been suggested that the envelope limits diffusion of O2 into the vesicle cytoplasm, thereby preventing inactivation of nitrogenase...

Limited postharvest life of tomato fruit is due to its highly perishable nature. Hypobaric pressure a new emerging hurdle technology usually used up 100 kPa for the preservation fruits and vegetables. In this study, an integrated approach hypobaric pressures (40 50 kPa) sponge-dipping potassium permanganate (KMnO4) was designed extension fruits. Fruits were treated with either 400 ppm KMnO4, or...