نتایج جستجو برای: precipitate flotation pf
تعداد نتایج: 20344 فیلتر نتایج به سال:
The hydrophilic flocculation of pyrite fines in aqueous suspensions with corn starch was studied by measuring particle size distribution, microscopy observation and micro-flotation. Furthermore, the interaction of corn starch with pyrite was investigated by determining the adsorption density and based on zeta potential measurements and X-ray photoelectron spectrometer (XPS) analysis in this wor...
For meeting the forecasting target of key technology indicators in the flotation process, a BP neural network soft-sensor model based on features extraction of flotation froth images and optimized by shuffled cuckoo search algorithm is proposed. Based on the digital image processing technique, the color features in HSI color space, the visual features based on the gray level cooccurrence matrix...
Nowadays recycling wastewater is a task in progress. New ways of contamination have appeared together with the technology development. Our article deals with the case of wastewater contaminated with dispersed colorants that are used during the decoration of paper boxes for packaging various products. The wastewater treatment is based on the electro-flotation process. The system is fully automat...
an attempt has been made in this paper to investigate the effect of particle size distribution on coal flotation kinetics. the effect of particle size (ps) on kinetics constant (k) and maximum theoretical flotation recovery (ri) was investigated while other operational parameters were kept constant. the relationship between flotation kinetics constant and theoretical flotation recovery with par...
Pemphigus foliaceus (PF) is an autoimmune blistering disease presenting in endemic and sporadic forms. The typical presentation is recurrent shallow erosions in a seborrheic distribution. PF has also been found in association with autoimmune diseases such as autoimmune thyroid disease (e.g. toxic nodular goiter and Hashimoto’s thyroiditis). In some patients, PF appears to be triggered by radioi...
The Photon Factory storage ring (PF-ring) and the Photon Factory advanced ring (PF-AR) continue a stable user operation as a synchrotron radiation source. The MTBF of the PF-ring has been kept at high around 200 h. At the PF-ring, a top-up operation started in April 2009. A rapid-polarization-switching device consisting of tandem polarizing undulators and a new injection system using a pulsed s...
Background & Aims: Diagnostic criteria for acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) requires acute onset of disease, chest radiograph demonstrating bilateral pulmonary infiltrates, lack of significant left ventricular dysfunction and Pao2/Fio2 (PF) ratio 300 for ALI or 200 for ARDS. And the latter one requires invasive arterial sampling. Measurement spo2 by pulse...
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