MATLAB Real-time Data Acquisition for Laboratory Froth Flotation Automation

In this paper analog input/output signals are used to control laboratory froth flotation machine using industrial panel PC. Dataacquisition is provided by two Advantech PCI cards, while flotation control is based on connection of adjustable frequency drivefurther connected to AC motor for agitation control, mass flow controller for air flow control, pH and temperature transmitters withaccording probes for pH and temperature logging respectively. Process control is provided by graphical user interface programmedin MATLAB.This practical engineering design allows researchers to set parameter values prior to flotation test as well as log and savemeasured values for further processing

Improving the effectivity of work with Rosin-Rammler diagram by using MATLAB R GUI tool

A simple, yet powerfull tool for plotting cumulative percent oversize against particle size while using combination of a logarithmicand double logarithmic axis (RR diagram) is here proposed. It has direct support for line approximation and thus RRdistribution parameters determination, along with ability to calculate oversize product from particle size value and vice versa. Aninsight of different approaches of RR size distribution parameters calculation is here given, along with an approach of graphing RRdiagram. MATLABR was used as a programming language for computation and graphical user interface design. The direct resultof this work is a public accessible file covered by the BSD License

Heavy metals in soils in middle Spiš

Soil samples were collected in long term contaminated and hygienic loaded area in middle Spiš. In this work we were determining contents of cooper, lead, zinc, chrome and nickel and compared with highest available concentrations. The content of cuprum, lead and zinc exceeded reference and for cooper and lead also indicated values. Cumulation of monitoring risk elements in soil raised order Cu>Zn>Pb>Cr>Ni