RACE WALKING: INVERSION OF FUNCTION FROM THE ASPECT OF SPEED AND RESULT SUCCESS

Race walking (RW) is a cyclic athletic discipline, of aerobic character, which is characterized by high intensity and high energy consumption. The result is correlated with the anthropological dimensions of the walker as well as good technical performance. The study includes 25 male students, third year of study, Faculty of Physical Education and Sports in East Sarajevo. For the purposes of the research, the results of RW at 2km (criterion variable) were measured, on the basis of which average values of walking speed (WS) were calculated. The aim of the research was to determine the correlation between the achieved result depending on the walking speed. By applying the Pearson product of the correlation moment, the obtained results confirmed a significant and high correlation between the result and the walking speed (r = -0.988;

Supplementary data for article: Matijević, B. M.; Vaštag, T. T.; Apostolov, S. L.; Milčić, M. K.; Marinković, A. D.; Petrović, S. D. N-(Substituted Phenyl)-2-Chloroacetamides: LSER and LFER Study, 2015. https://doi.org/10.1016/j.arabjc.2015.09.008

Supplementary material for: [https://doi.org/10.1016/j.arabjc.2015.09.008]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/293

Supplementary data for article: Matijević, B. M.; Vaštag, T. T.; Apostolov, S. L.; Milčić, M. K.; Marinković, A. D.; Petrović, S. D. N-(Substituted Phenyl)-2-Chloroacetamides: LSER and LFER Study, 2015. https://doi.org/10.1016/j.arabjc.2015.09.008

Supplementary material for: [https://doi.org/10.1016/j.arabjc.2015.09.008]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/293

Residential Building Stock in Serbia: Classification and Vulnerability for Seismic Risk Studies

Regional seismic risk assessment is necessary for designing effective seismic risk mitigation measures. In general, such risk assessment studies consist of three components: hazard, vulnerability, and exposure modelling. This paper lays the foundations for regional seismic risk assessment of the residential building stock in Serbia and addresses each of the three seismic risk assessment components, either by reviewing the existing or proposing novel models. First, a review of seismic hazard models and seismic design codes used in Serbia in the past 70 years was presented. Next, an overview of Serbia’s population metrics and historical development of Serbian’s residential building stock was presented to provide the context for the exposure model. Furthermore, the paper proposed a novel building classification for Serbia's residential building stock, which is based on the existing building taxonomies, but it has been adapted to account for the local building characteristics. Building damage patterns reported in past earthquakes in Serbia and neighbouring countries were reviewed as a basis for damage classification pertaining to building typologies included in the proposed classification. Finally, the results of a preliminary vulnerability model were presented in the form of expert-based fragility functions derived for buildings typical of Serbia's residential building stock

Relative age effect and selection of young basketball players

Purpose of the present study was to examine whether influence of relative age effect (RAE) exists or not in the selected 13 year old basketball players. Subjects were 20 basketball players (HT=177.35cm±6.73, BW=61.42kg±8.98, average age 13 years and 7 months ±.28, average experience in basketball training 4 years and 6 months ±1.15). Sample was divided in two groups: 11 players born in first half of the year and 9 players born in the second half of the year. One-way ANOVA was used in order to analyze the differences between the two groups of players in set of anthropometric variables (body height, arm span, standing reach height, body weight and percentage of body fat), motor variables (velocity of neuromuscular reaction time, vertical jump, 5 meters sprint, 10 meters sprint, 20 meters sprint, T-test, Zig-zag test, ball throw from sitting position, Sit-ups for 30 seconds and standing forward bend) and one functional variable (20-M shuttle run test). Subjects do not differ in applied set of parameters, except in on variable (sit-ups for 30 seconds, p=.040). It was concluded that RAE does not exist in this sample of examinees

Establishing Dependences between Different Lipophilic Parameters of New Potentially Biologically Active N-Substituted-2-Phenylacetamide Derivatives by Applying Multivariate Methods

Lipophilicity, a very important parameter in the potential biological activities of molecules, was investigated for newly synthesized N-substituted-2-phenylacetamide derivatives. The determination was carried out in two ways: first experimentally, by applying thin-layer chromatography (TLC) on reversed-phase TLC (RPTLC) RP18F254s in the presence of one protic (methanol) and one aprotic solvent (acetonitrile) and then mathematically, by using different software packages. The intercept of the linear dependence between volume fractions of the organic solvent and the retention parameters obtained by TLC is known as the retention chromatographic constant, R-M(0), while the slope represents the m value. In order to establish the dependences between the partition coefficient, log P as the standard measure of lipophilicity and the alternative lipophilic parameters obtained experimentally by TLC, R-M(0) and m values, linear regression analysis and multivariate methods, cluster analysis (CA) and principal component analysis (PCA), were used. All applied methods gave approximately similar results. Although there is a linear dependence between the two chromatographic parameters, the retention constant, R-M(0), and the m values, only R-M(0) shows suitable similarity with the standard measure of lipophilicity of the investigated N-substituted-2-phenylacetamide derivatives at the given conditions. The existence of this resemblance proves that the chromatographic retention constant, R-M(0), obtained by RPTLC could be successfully used for the description of lipophilicity of investigated compounds. On the other hand, the results confirmed that the applied linear regression analysis and the multivariate analysis (CA and PCA) have the ability to compare lipophilic parameters of the investigated phenylacetamide derivatives obtained in different ways

Chromatographic and Computational Assessment of Potential Biological Activity of N-(Substituted Phenyl)-2-Chloroacetamides Applying Multivariate Methods

The lipophilicity of the newly synthesized N-(substituted phenyl)-2-chloroacetamides, as the most commonly used molecular descriptor of a potential biological activity was the subject of research. The lipophilicity of the tested derivatives was determined by applying the reversed-phase thin-layer chromatography (RPTLC18F254s) in mixtures of water and one protic (n-propanol) and one aprotic (acetonitrile) solvent, as well as mathematically. The effects of the substituent on the lipophilicity of chloroacetamides were discussed. The obtained chromatographic retention constant, R-M(0), of examined chloroacetamides was correlated with the standard measure of lipophilicity, log P, and with pharmacokinetic predictors such as human effective permeability in jejunum, P-eff, plasma protein binding, PPB, and distribution through blood-brain barrier, log BBB, using linear regression analysis and two multivariate methods, cluster analysis and principal component analysis. All the applied methods gave very similar results, and all the procedures also confirmed the fact that R-M(0) determined by RPTLC could be used as a descriptor to estimate the potential biological activity of N-(substituted phenyl)-2-chloroacetamides

Relacije tjelesne mase i maksimalne sile muskulature nogu

Na uzorku od dvadeset i četiri (N=24) studenta prve godine Fakulteta fizičkog vaspitanja i sporta Univerziteta u Banjoj Luci, sprovedeno je transferzalno istraživanje s ciljem da se istraži povezanost mase tijela, kao reprezenta tjelesnih dimenzija, sa ispoljavanjem maksimalne sile muskulature nogu. U ovom istraživanju eksperimentalni pristup u određivanju alometrijskog eksponenta, za testove kojima se procjenjuje maksimalna sila muskulature nogu (Čučanj 80° b=0.78, čučanj 110° b=0.88, čučanj 140° b=1.06, čučanj 1RM b=0,62), obezbjeđuje rezultate približne teorijski predviđenim. b=0.67 ukoliko se rezultati testova normalizuju masom tijela (m). Tako da ispoljavanje maksimalne sile muskulature nogu zavisi od tjelesnih dimenzija, prije svega od tjelesne mase, i da bi se dobila relativna sila (jačina) ispitanika rezultate mjerenja maksimalne sile muskulature nogu treba dijeliti sa masom tijela stepenovanom alometrijskim eksponentom

N-(substituted phenyl)-2-chloroacetamides: LSER and LFER study

The UV absorption spectra of twelve N-(substituted phenyl)-2-chloroacetamides were recorded in eighteen solvents. The effect of specific and non-specific solvent-solute interactions on the absorption maxima shifts was evaluated by using the Kamlet-Taft solvent parameter set, i.e. applying linear solvation energy relationships (LSER) principles. Optimized geometries and experimental results were interpreted by using DFT (B3LYP/6-311+G(d,p) method) and time-dependent density functional (TD-DFT) method. Overall electron density in both ground and excited state was obtained by the use of Quantum Theory of Atoms in Molecules, i.e. Bader's analysis. It was found that both solvent and substituents cause appropriate change of the extent of conjugation in the molecules that further affect their intra-molecular charge transfer (ICT) character. Linear free energy relationships (LFERs) were applied to the substituent-induced NMR chemical shifts (SCS) using single substituent parameter (SSP) and dual substituent parameter (DSP) model. Transmission mode of the electronic effects of substituent was discussed according to the results of theoretical calculations and results of LFER correlations. Comparative analysis of presented results with the ones published for structurally similar series of amide which contained cyano group, instead chlorine, provides additional information on the impact of present group to the properties of investigated compound