The hemp (Cannabis sativa L.) seeds present an important raw material resource for the industry due to processing possibilities of plants components. The hemp oil and the pressing cake resulted by the cold pressing of the hemp presents excellent alimentary and therapeutic properties. The purpose of the research was to study the technology of obtaining of the hemp oil by cold pressing of the seeds, the influence of the process parameters and raw materials quality upon the products quality. The pressing was made with screw press of small using press nozzle in diameters of 5, 6, 7, 8 and 10 mm. For the hemp seed there were determined the organoleptic characteristics (total volatile matter and the raw fat content by Soxhlet extraction). For the hemp oil there were determined the acid value and the peroxide value. There werde determined the working parameters of the press (the rate efficiency and the productivity of the press). The results emphasized important data for the practice. The fat content of the seed was between 30,89 and 33,25 % and the volatile matter was between 90,42 and 93,68 %. The rate efficieny of the cold pressing of the hemp seed was between 23,89 and 27,69 % obtained oil, being influenced by the characteristics of the seeds. The pressing process was also influenced by the quality of the seed, presenting optimal values in the case of using pressing nozzle 8 and 10 mm in diameter. The acid values of the hemp oil was between 0,65 and 4,45 mg KOH/g oil and the peroxide values was between 0,62 and 26,91 mEg O2/g. Further studies are recommended be made and there are the initiations of ab informational programme, in order to inform the farmers and consumer about the benefic and therapeutic effects of the hemp oil upon the health.

Nowadays, the transportation of hazardous substances required for various industrial works is a very common activity. In each national economy, safe transport of hazardous materials on land is an important issue. Much of these materials are either moved by trucks or trains. However, hazardous materials transportation is very likely to generate major accidents with irreversible consequences on surrounding population and on the environment along transportation routes. The current paper deals with analysis and simulation of the consequences of an explosion involving a truck transporting flammable gas cylinders materials. Consequence modelling involves the graphic representation or the calculation and estimation of numerical values which best describe the physical results of loss of containment scenarios which involve flammable/explosive/toxic materials with regard to their impact on surrounding assets or people. In the present study, state of the art software has been used for modelling and simulating the accident scenario, namely the initial fire and the subsequent explosion of the gas cylinders.

In the process of underground coal mining a complex network of vertical, horizontal and inclined mine workings with the purpose of extraction, transportation and evacuation to the surface are utilized. The mining workings are also being utilized for ventilation network system, which is also used for ensuring the oxygen supply necessary for workers, as well for diluting explosive gases and/or toxic substances and, ultimately, for exhausting the heat resulted from underground workings. For air flow pumping, special fans, of high capacity, located at the surface of the main ventilation stations are used. The fan operating mode depends on aerodynamic parameters and also on the structure of the ventilation network. Knowledge of specific local network parameters leads to the optimization of air flow distribution. The novelty presented in the paper consists in analysing and optimising the complex ventilation networks of Lonea mining unit, based on the depresiometric, flowmeters measurements and the status parameters specifics to each branch. Worldwide, in high developed mining countries, solving a complex ventilation networks it's being carried out with the help of specialized software such as VentSim, VentGraft, VentPri, 3D Canvent etc., through discontinuous operating at the mining unit quarter or to a distant location, where upon the results obtained are presented to the ventilation specialists. The complex ventilation network afferent to Lonea mining unit was rendered, fixed and optimised, up-to-date, using 3D Canvent software.

Risk assessment is a concept introduced for analysing the safety level in workplaces in order to assess if enough and proper precautions have been taken or if their number and quality should be improved so that to prevent hazardous situations. The underground coal mining industry is very hazardous, facing serious fatalities related to work, workplaces and workers as a consequence of the high-risk processes carried out underground and of the hazardous toxic and explosive atmosphere. The use of electrical equipment in such hazardous atmospheres (underground or surface) presents a series of particularities, the workers operating this equipment being exposed to electrical injury. The starting point for the optimization of the activity for preventing work accidents and occupational diseases in a system is represented by the risk assessment of that specific system. Regardless if it is a workplace, a workshop or an enterprise, such an analysis allows the ranking of risks depending on their dimension and the efficient allocation of resources for priority measures. Risk assessment involves identifying all risk factors in the analysed system and quantifying their size based on the combination of two parameters: the severity and frequency of the maximum possible consequence on the human body. This results in partial risk levels for each risk factor, respectively global risk levels for the entire system analysed. In order to facilitate the fulfilment of the legal obligations of the employers in the field of risk assessment of accidents and occupational disease, a relatively large number of methods have been designed and used. Of the many methods used worldwide for assessing the risk of accidents, within this article is used a risk assessment method developed by a Romanian Institute for Research and Development in Labour Safety Bucharest, the paper dealing with a case study in an underground coal hard coal mine carried out for presenting the practicality of this method, in case of assessing the risks of electrical injury of mining electricians.

Ruminal zearalenone (ZEA) degradation in "in vitro" digestion was examined in different variants using the Hohenheimer Gas Test. First, the mycotoxin degradation was measured using squeezed rumen fluid from solid digesta of the dorsal sack and free rumen fluid from the ventral sack, respectively. Then free rumen, fluid of the ventral sac was used with addition of concentrate and mixtures of concentrate with sun-flower oil and starch, respectively. Within 24 hours ZEA was degraded down to 63% and 49% of the initial concentration when incubated with solid and fluid rumen digesta, respectively. Using additives and rumen fluid concentrate for incubation, concentrate, concentrate with oil and concentrate with starch, respectively, a reduction of ZEA to 46, 56 and 37% of the initial toxin concentration was observed.