InBosnia and Herzegovina, Tertiary volcanic rocks occur within two geotectonically different areas: (1) in northeasternBosnia, the wider area of Srebrenica and, (2) to a lesser extent in centralBosnia, the wider areas of Maglaj, Teslic and Nemila (Kolici). The major and trace element variations in the rocks surrounding Maglaj indicate their high-K calc-alkaline character, and are consistent with fractionation of the observed phenocryst assemblages (plagioclase, sanidine, biotite and hornblende). The scatter in some graphs cannot be explained by simple crystal fractionation from a common parent magma. More likely, such variations are affected by variable contribution and assimilation of continental crust within the magmas generated in the mantle. The presence of reverse zoned plagioclase phenocrysts, as well as a resorbed rim enclosing the coexisting quartz phenocrysts, can be interpreted by mixing of magmas with different temperatures and compositions. All analyzed rocks show enrichment of the LILEs over the HFSEs and have significant negative Ta-Nb, P and Ti anomalies, and positive U and Pb anomalies, which are characteristic of subduction-related volcanic rocks generated in (post) collisional zones. Chondrite-normalized REE patterns exibit enrichment on the LREEs over the HREEs with (La/Yb) cn ranging from 21.4 to 21.9. All analyzed rocks have small negative Eu anomalies (Eu/Eu * =0.86-0.89) which suggests that plagioclase fractionation played a minor role in the genesis of the dacites. Ratios of some diagnostic elements versus SiO 2 diagrams are best explained as a result of assimilation of varying degree in the continental crust during magma ascent and continuing fractional crystallization. High values of LILE/HFSE ratios in K/Ti (6.6 to 11.9), K/Zr (124-169), K/Nb (1598-2692) and Ba/Nb (44-65) and negative anomalies of Ti and Nb in the volcanic rocks surrounding Maglaj can be explained as the result of complex processes in the magmatic system originally derived from a mantle wedge.

This work compares the hitherto unknown crystal structure of N-methylnitramine with its gas-phase diffraction structure. A series of alkaline, alkaline earth and some transition-metal salts were investigated. Furthermore, a series of new nitrogen-rich salts was synthesized and characterized for the first time. The Mannich reaction of N-methylnitramine with formaldehyde yields 2-nitro-2-azapropanol, which was treated with 2-nitro-2-azapropyl isocyanate to furnish new bis-N,O-(2-nitro-2-azapropyl)carbamate. The analogue bis-N,N′-(2-nitro-2-azapropyl)urea derivative is formed when 2-nitro-2-azapropyl isocyanate is treated with water. Owing to the energetic nature of all compounds, their energetic properties were determined. The sensitivities towards impact, friction and electrostatic discharge were determined using the BAM drophammer and friction tester as well as a small-scale electrical discharge device. Standard enthalpies of formation were calculated at the CBS-4M level of theory. With these values and the experimental densities, several detonation parameters such as detonation pressure and velocity of the compounds were computed using the EXPLO5 (V6.01) computer code and compared to currently used explosives.

Mitochondrial DNA (mtDNA) variations were analyzed in a sample of 245 individuals of Bosnian-Herzegovinian population from the area of Northeastern Bosnia (also known as Tuzla region). Haplogroup affiliation was determined using RFLP method (Restriction Fragment Length Polymorphism) analyzing haplogroup-specific markers of mtDNA coding region, characteristic for the main Western-Eurasian haplogroups. Additional analyses of two sequenced hypervariable segments (HVSI and HVSII) of mtDNA control region were performed in order to identify U subhaplogroups. The study revealed that 95.51% of the analyzed individuals belonged to the typical Western-Eurasian haplogroups: H, I, J, K, T U, V, W or X. The most frequent haplogroup in the analyzed population was the haplogroup H (52.65%) which, due to its increased frequency, represents a marking haplogroup of the population of Northeastern Bosnia. The results of intergroup genetic analysis showed that Bosnian-Herzegovinian population is genetically closer to previously studied populations of Herzegovinians (part of Bosnia and Herzegovina), Slovenians and Croats in relation to other neighboring populations located in Southeastern Europe. Our study also suggests that population genetic structure of Tuzla region is dominated by mutations that are classified as "Paleolithic". These mutations were probably brought to the area of northeastern Bosnia through waves of prehistoric and historic migrations, but the impact of any pre-Neolithic, Neolithic or some "later" migrations, with a slightly lower contribution to the genetic structure of this population, also cannot be neglected.

Abstract We attempted to establish which applied kinematic variables significantly contributed to the efficiency of the instep kick motion in soccer. The study sample comprised 13 boys (age: 13 ± 0.5 yrs; body mass: 41.50 ± 8.40 kg; body height: 151.46 ± 5.93 cm) from the FC Sloboda school of soccer. Each participant performed three kicks with maximum strength that were video recorded with two synchronized cameras (Casio Ex-F1) positioned 12 m away from the place of the kick. Data were collected by analyzing the video recordings of each kick. Data processing was performed using the APAS motion analysis system (Ariel Dynamics Inc., San Diego, CA). On the basis of the forward selection method of multiple regression analysis, we determined the correlations between the prediction variables and the selected criteria (speed of the ball; p = 0.01). On the basis of the regression coefficients, it was concluded that two variables significantly contributed to the speed of the ball: speed of the foot of the kicking leg at the time of contact with the ball (p = 0.01) and the distance between the angle support leg and center of the ball (“foot posterior displacement”) (p = 0.01). In order to achieve the best possible technical performance and, therefore, a higher speed of the ball, soccer players must pay attention to two important elements during training. First, it is necessary to position the support leg as close to the ball as possible and, second, maximize the force used in the initial phases of the kick to achieve a high speed of the kicking foot