World production of pipes is mainly based on the standards of API. However, this does not obligate you to use exclusively for casing manufactured by API standards. The wells that will exploit the hydrocarbons and aggressive media, install the protective casing made of alloy steel not yet covered by API standards. Running casing operation holds a sp...

By Zvonimir Bošković, Vladimir Čebašek, Sanel Nuhanović

Pesticide metsulfuron-methyl (chemical name: methyl 2-(4-methoxy-6-methyl-1,3,5-triazin-2- ylcarbamoylsulfamoyl)benzoate) is a post-emergence sulfonylurea herbicide which controls most annual grass broadleaf weeds in cereals, and it has been used for a long time.The effect of metsulfuron-methyl on microbiological activity in soil was investigated. ...

By Ljiljana Radivojević, Dubravka Jovičić, Ljiljana Šantrić, Slavica Gašić, Jelena Umiljendić Gajić

A steady increase in the number of dogs is a serious sanitary-epidemiological problem of urban areas. Those animals permanent contaminated those areas with faeces which present a significant health problem from human. Most frequent parasites are eggs of zoonotic helminthes Toxocara canis, Dipylidium caninum, Ancylostomidae spp., Taenia spp., Toxasc...

By Ivan Pavlović, Dubravka Jovičić, Ana Vitas, Nada Petrović, Živka Ilić

Implementation of major construction projects thanks are due to the technological development of materials and equipment to perform. Development of equipment for piles, allowed this type of structure a large application, as in the system of basic structural elements, as well as providing (temporary or permanent) construction site. Influences on the...

By Svjetlana Vlaški

The state of stress around cavities of the revolving ellipsoidal shape (prolate or oblate) in the extreme cases of their degeneration is a very complex problem. Namely, the shape of cavities is defined by an appropriate curvilinear coordinate system, which contains hyperbolic and trigonometric functions. In this paper, the treatment of revolving el...

By Dragan Lukić, Elefterija Zlatanović

In this article are presented the procedures and the results of open pit optimal contour "Delici" choice near Ugljevik, Republic of Srpska. By using of LG 3D algorithm for optimization in the Whittle FourXTM is determined a series of open pit shales based on the various income factors (Revenue factor) with iteration of 0.03 of change in coal prices...

By B. Lazar Stojanovic, J. Petar Tomic, Z. Mladen Stevic

The paper present a review of the geotechnical characteristics of the terrain at the location of the bridge No. 1 of motorway Lašva – Donji Vakuf, subsection interchange Lašva – interchange Kaonik.Also, given the suggestion of foundation structures for each column, as well as the calculated bearing capacity...

By Zlatan Talić, Đenari Ćerimagić

Bosnia and Herzegovina is characterized by heterogeneous geological structure, and a high degree of tectonic and the seismic activity as well as various relief and the climatic characteristics and water flows of different gradients. All this reflected on engineering-geological characteristics of the terrain.The main causes of landslides' activation...

By Mevlida Operta, Jelena Golijanin, Amra Ćatović

The landslide is located in the hinterland of water source "Studenac" in the local community Gornja Cadjavica near Bijeljina. The field where the triggered landslide occurred is conditionally stable slope. It is overgrown with forest trees and therefore it was not a subject of interest in terms of its stability until the water source and accompanyi...

By Neđo Đurić, Milan Perisić, Dijana Đurić

The hydrogeological investigations are inevitable in the whole process in defining of engineergeological field characteristics and the drafting of landsllides rehabilitation project, but the main goal of these investigations is the groundwater quantities calculations in critical sections of landslides. For gain of exact input parameters for groundw...

By Ferid Skopljak