A deeper understanding of the milling operation of ball mills helps mineral processing engineers to control and optimize them, and therefore, reduce their consuming power. In this work, the milling operation of ball mills is investigated using two methods, i.e. DEM and combined DEM-SPH. First, a pilot scale ball mill with no lifter is simulated by both methods. Then another pilot scale ball mil...

Enhancing the accuracy of an approximate cost estimate is a critical issue since the estimate ordinarily predicts the total cost of a project with insufficient project information. In order to facilitate the approximate cost estimate process, this paper proposes a computer-based integrated system that enables the flexibility to varying amount and accuracy of available information, higher accura...

Heikki Särkkä Electro-Oxidation Treatment of Pulp and Paper Mill Circulating Waters and Wastewaters Lappeenranta 2013 p. 96 Acta Universitatis Lappeenrantaensis 524 Diss. Lappeenrannan teknillinen yliopisto ISBN 978-952-265-431-1, ISBN 978-952-265-432-8 (PDF), ISSN-L 1456-4491, ISSN 1456-4491 Interest in water treatment by electrochemical methods has grown in recent years. Electrochemical oxida...

The last two hundred years has witnessed a remarkable transformation in the world of work. In the early 19th century, the industrial revolution introduced the ability to mechanise processes previously performed by people. As a consequence, workplaces became larger and more complicated. Change was not limited to the physical nature of the workplace: workers were also required to work differently...

BACKGROUND Pain is the common complication after a surgery. The aim of this study was to evaluate the effect of aromatherapy with Rosa damascena Mill. on the postoperative pain in children. MATERIALS AND METHODS In a double-blind, placebo-controlled clinical trial, we selected 64 children of 3-6 years of age through convenient sampling and divided them randomly into two groups. Patients in gr...

Many nervous systems contain rhythmically active subnetworks that interact despite oscillating at widely different frequencies. The stomatogastric nervous system of the crab Cancer borealis produces a rapid pyloric rhythm and a considerably slower gastric mill rhythm. We construct and analyze a conductance-based compartmental model to explore the activation of the gastric mill rhythm by the mod...

abstract background: pain is the common complication after a surgery. the aim of this study was to evaluate the effect of aromatherapy with rosa damascena mill. on the postoperative pain in children. materials and methods: in a double-blind, placebo-controlled clinical trial, we selected 64 children of 3–6 years of age through convenient sampling and divided them randomly into two groups. patie...

Azotobacter vinelandii, a strict aerobic nitrogen-fixing bacterium, has been extensively studied with regard to the ability of N2-fixation due to its high expression of nitrogenase and fast growth. Because nitrogenase can also reduce cyanide to ammonia and methane, cyanide degradation by A. vinelandii has been studied for the application in the bioremediation of cyanide-contaminated wastewater....

Water washing of cottonseed meal is more cost-efficient and environmentally friendly than protein isolation by means of alkaline extraction and acidic precipitation. Thus, water-washed cottonseed meal (WCSM) is more promising as biobased wood adhesives. In this work, we examined the effects of the particle size on the morphology and adhesive performance of WCSM. Pilot-scale produced and dried W...