Warehouse Information System

Bakalářská práce je zaměřena na analýzu zvolených výrobních procesů společnosti PRÁCE INVALIDŮ, s.r.o., návrh modulů informačního systému pro skladové hospodářství včetně jejich implementace, spojení se stávajícím systémem a zhodnocení přínosu navrženého řešení.Bachelor’s thesis is focused on analysis selected production process for company PRACE INVALIDU, s.r.o., design and implementation information system modules for inventory control, joining with current system and evaluation of solution benefits.

Reactivity of mechanical activated coals for special utilization

The paper presents the coal activation effect as disintegration in the nano-submicron range and destruction carbon structure. The Slovak brown coal activated in planetary mill is characterised by destruction of organic structure of coal. The biggest activation effect connected with the destruction of C—C bonds of sp3 carbons has been confirmed by 13C NMR spectroscopy in the chemical structure of humic acids extracted from the coal sample activated for a period of 60 min. The specific surface of humic acids is much smaller then that of mechanically activated sample from which they were extracted. The black Czech coal was activated by two stage disintegration. In the first stage of mechanochemical activation using Grinding Aqueous Caustic Leaching, GACL method a fine dispersed semiproduct is formed with the size of particles from 2.5 to 9000 nm. The additional disintegration using water jet increases the effect of disintegration in the submicron area of the coal product. The volume distribution maximum achieves in this stage about 60 wt% of 750 nm grains