In Serbia it has been shown that the ecological awareness of the population has been growing in recent times. Especially in the last ten years, when various transformations in the area of governance and competencies in the republic began to acquire conditions for the implementation of projects in the field of waste management. First of all, it refe...

By Ana Momčilović, Dragana Dimitrijević Jovanović, Predrag Miodrag Živković, Nevena Tomić

This paper deals with a problem of finding the right address in the new city or unknown part of the city, the right door. The psychological pressure on people in this situation can be quite large and unpleasant, especially when the GPS could not provide enough support. The outdoor position systems are based on GPS signal and besides that, they are ...

By Andjela Španović, Dragana Preradović

Monitoring of the technical condition of gas pumping units (GPU), including the average power of the GPA- Ts-16S type, is important during operation, since damage to its main unit - the blade apparatus can lead to significant economic losses and, in some cases, to an accident. The analysis of the methods of parametric and vibroacoustic control rela...

By Leonid Zamikhovskyi, Natalia Ivanuyk

The tapered screw joints are widely used in the formation of the drill string. They consist of two parts - a box and a pin. during the process of screwing box and a pin the contact pressure between thread surfaces arises, the magnitude of which affects the intensity of wear on these surfaces. For the first time, the authors offer in this work to ch...

By Oleh Onysko, Volodymyr Kopei, Vitalii Panchuk

The composting is one of the most effective recycling method of green waste. The presence of some heavy metals as Cr2+, Cu2+, Mg2+ and Zn2+ may influence the compost quality. Thus, by adding some components like manure the micronutrients and heavy metals regime suffer changes which might influence their bioavailability for plant uptake. The bioavai...

By Irina Smical, Adriana Muntean

Within the European context, there are factors that have changed Europe's way of thinking about itself and about the Islam. Such factors include for example the debates about wearing a headscarf in public schools. Such debates have occurred in many European countries. While the existence of the Islam has been long recognized by the constitutions of...

By Adeline Berdie

Fish is an important source of protein, iron and zinc - essential nutrients for child growth and development, a source of energy for adults, elderly. Omega-3 fatty acids found in different fish species help develop children’s brains, maintain flexibility in blood vessels and contribute to brain oxygenation by annihilating the destructive effe...

By Katalin Fodor, Tatiana Barz, Felicia Drăgan

The efficiency of operation of gas pumping units (HPA) is characterized both by their technological parameters and the technical state of HPA as a whole. If a number of methods and technical means for their implementation have been developed to control the technical condition of the main units of HPA (power bearing elements, blades, piping, etc.), ...

By Leonid Zamikhovskiy, Oleksandra Mirzoieva, Sergii Zikratii

 Finding the coefficient of rolling friction (CRF) by the inclined plane method is similar to the manner used in establishing the coefficient of sliding friction. For the rolling case, the difficulty arises from the fact that the usual devices employed in angular measurements present errors greater than the effective angle. The paper surmounts...

By Alaci Stelian, Ilie Musca, Cristian Barz, Cristian Barz, Sorinel Toderas Siretean, Florina–Carmen Ciornei

 The continuous degree of automation in industry and the networking of individual components such as machines, robots, autonomous drive systems, control units etc. open up new possibilities for linking production and service, or integrating customers and business partners into value-added processes. In this technical revolution, machines shoul...

By Cristian Barz, Klaus C Jalba