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Publikacije (45111)

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Velibor Lalić

U ovom radu se analizira uloga provajdera bezbednosti na nacionalnom nivouu kontroli zločina mržnje. Poseban osvrt je dat na ulogu policije i tužilaštva, ali i drugihsubjekata koji imaju društveni značaj u stvaranju pogodnog ambijenta za prevenciju ovihkrivičnih dela. To su prvenstveno vaspito-obrazovne institucije, političke elite, i mediji.Efi kasna kontrola zločina mržnje je sveobuhvatan proces u kome aktivno treba da buduuključeni različiti subjekti u društvu, ne samo organi formalne društvene kontrole. Integalniprisup ovom problemu dugoročno može dati pozitivne rezultate, bilo da je reč orepresivnom delovanju ili o prevenciji.

Timothy Hughes, L. Hansson, I. Akkouh, Riad Hajdarevic, Jorunn S. Bringsli, A. Torsvik, E. Inderhaug, V. Steen et al.

Alpha defensins are anti-microbial peptides of the innate immune system. The defensin A1 and A3 genes are located in a repeat array of variable copy number (the DEFA1A3 locus) and encode the human neutrophil peptides 1, 2 and 3. The possibility that copy number variation (CNV) may be associated with infection susceptibility and autoimmune pathology motivated the study of DEFA1A3 CNV across populations. We enhanced two existing methods (one qPCR-based and one sequencing-based) to enable copy number estimation that discriminates between DEFA1 and DEFA3 genes. We used these methods to quantify A1/A3 copy number variation in 2504 samples from the 1000 Genomes high-coverage dataset as well as performing FiberFISH assays on selected samples to visualize the haplotypes. These methods produce accurate estimates and show that there are substantial differences between populations. The African population is a clear outlier with a high frequency of the ancestral pure DEFA1 haplotype, but also harbours exceptionally long haplotypes of 24 copies of both DEFA1 and DEFA3, whilst the East Asian population displays the highest mean level of DEFA3 copy number. Further, our findings demonstrate that qPCR can be an accurate method for CNV estimation and that defensins substantially extend the known range of copy number variation for a human protein-coding gene.

T. Hughes, L. Hansson, I. Akkouh, Riad Hajdarevic, Jorunn S. Bringsli, A. Torsvik, E. Inderhaug, V. Steen et al.

Alpha defensins are anti-microbial peptides of the innate immune system. The defensin A1 and A3 genes are located in a repeat array of variable copy number (the DEFA1A3 locus) and encode the human neutrophil peptides 1, 2 and 3. The possibility that copy number variation (CNV) may be associated with infection susceptibility and autoimmune pathology motivated the study of DEFA1A3 CNV across populations. We enhanced two existing methods (one qPCR-based and one sequencing-based) to enable copy number estimation that discriminates between DEFA1 and DEFA3 genes. We used these methods to quantify A1/A3 copy number variation in 2504 samples from the 1000 Genomes high-coverage dataset as well as performing FiberFISH assays on selected samples to visualize the haplotypes. These methods produce accurate estimates and show that there are substantial differences between populations. The African population is a clear outlier with a high frequency of the ancestral pure DEFA1 haplotype, but also harbours exceptionally long haplotypes of 24 copies of both DEFA1 and DEFA3 , whilst the East Asian population displays the highest mean level of DEFA3 copy number. Further, our findings demonstrate that qPCR can be an accurate method for CNV estimation and that defensins substantially extend the known range of copy number variation for a human protein-coding gene.

Yassin Khalifa, Cara Donohue, James L. Coyle, E. Sejdić

Upper esophageal sphincter is an important anatomical landmark of the swallowing process commonly observed through the kinematic analysis of radiographic examinations that are vulnerable to subjectivity and clinical feasibility issues. Acting as the doorway of esophagus, upper esophageal sphincter allows the transition of ingested materials from pharyngeal into esophageal stages of swallowing and a reduced duration of opening can lead to penetration/aspiration and/or pharyngeal residue. Therefore, in this study we consider a non-invasive high resolution cervical auscultation-based screening tool to approximate the human ratings of upper esophageal sphincter opening and closure. Swallows were collected from 116 patients and a deep neural network was trained to produce a mask that demarcates the duration of upper esophageal sphincter opening. The proposed method achieved more than 90% accuracy and similar values of sensitivity and specificity when compared to human ratings even when tested over swallows from an independent clinical experiment. Moreover, the predicted opening and closure moments surprisingly fell within an inter-human comparable error of their human rated counterparts which demonstrates the clinical significance of high resolution cervical auscultation in replacing ionizing radiation-based evaluation of swallowing kinematics.

Stephanie O. Frisch, J. Brown, Z. Faramand, Jennifer Stemler, E. Sejdić, C. Martin-Gill, C. Callaway, S. Sereika et al.

Emergency department (ED) nurses need to identify patients with potential acute coronary syndrome (ACS) rapidly because treatment delay could impact patient outcomes. Aims of this secondary analysis were to identify key patient factors that could be available at initial ED nurse triage that predict ACS. Consecutive patients with chest pain who called 9-1-1, received a 12-lead electrocardiogram in the prehospital setting, and were transported via emergency medical service were included in the study. A total of 750 patients were recruited. The sample had an average age of 59 years old, was 57% male, and 40% Black. One hundred and fifteen patients were diagnosed with ACS. Older age, non-Caucasian race, and faster respiratory rate were independent predictors of ACS. There was an interaction between heart rate by Type II diabetes receiving insulin in the context of ACS. Type II diabetics requiring insulin for better glycemic control manifested a faster heart rate. By identifying patient factors at ED nurse triage that could be predictive of ACS, accuracy rates of triage may improve, thus impacting patient outcomes.

M. Kazazic, Maida Djapo-Lavic, E. Mehić, L. Jesenković-Habul

ABSTRACT In order to determine the degree of polycyclic aromatic hydrocarbon pollution, a biomonitoring study was conducted using honey as a bioindicator. Bees are good bioindicators of environmental pollution, either via the presence of toxic molecules in their bodies or via the presence of residues in their products. In this study we investigated 10 honey samples collected from polluted and unpolluted areas in Herzegovina region for their contamination with 16 polycyclic aromatic hydrocarbons (PAHs). Extraction was done in ultrasonic bath and was followed by chromatographic analysis by HPLC with UV/Vis detector. Results showed no presence of PAHs in six honey samples, while in four of them we detected low PAH concentrations with maximum values never higher than 7 µgkg−1 of fresh weight for the honey. Benzo⦋a⦌pyrene, which is the most potentially carcinogenic PAH, was detected in one sample. Indeno[1,2,3-c,d]pyrene was found in all samples where PAHs were detected in the range < LOD to 2.56 µgkg−1 FW. Concentrations of all PAHs detected in investigated honey samples were low and safe to consume. The results of this study show that honey can be used as a bioindicator to assess environmental pollution.

O. Marković, V. Borish, Jacob A. Hines, Shankari V. Rajagopal, M. Schleier-Smith

M. Busuladžić, A. Gazibegović-Busuladži, A. Čerkić, D. Milošević

By analyzing angular and energy distributions of the photoelectrons emitted in strong-laser-field-induced ionization of molecules, one can obtain information about the molecular structure and the ground-state symmetry. High-energy part of the photoelectron spectra in the above-threshold ionization (ATI) is characterized by a plateau region in which the ionization probability is practically energy independent. The photoelectron yield drops off exponentially for electron energies higher than some critical energy, i.e. the mentioned plateau is followed by an abrupt cutoff. We investigate the influence of the molecular ground state symmetry on this plateau region and show that, analyzing the corresponding high-order ATI spectra, one can obtain information about the highest occupied molecular orbitals (HOMOs) of the considered molecules. We present results for different homonuclear diatomic molecules: N2, O2, Ar2 and C2 having, respectively, the σ g , π g , σ u and π u symmetries of the HOMO. Particular attention is devoted to the C2 molecule since high-order ATI spectra for this molecule have not been analyzed yet. We consider ATI by a linearly polarized laser field for which the mentioned plateau can be well-developed, depending on the orientation of the molecular axis with respect to the laser-field polarization axis. The HOMO-symmetry-dependent (dis)appearance of the plateau is particularly pronounced for the parallel and perpendicular orientations. Our findings are valid for a wide range of the laser-field intensities and wavelengths, which is important for realization of the suggested experiments. Using the improved molecular strong-field approximation, the theory which is particularly suitable for the analysis of high-energy ATI spectra, for the case of the C2 molecule and different molecular and laser parameters, we investigate various features of the plateau, such as its length and the interference minima and their positions.

A. Mujezinović, S. Martinez

This study interprets results of multiparametric measurements obtained on a pipeline experiencing dynamic stray currents caused by DC train traction. Measurements included three 24 h recordings of pipe-to-soil and rail-to-soil potentials, pipe-to-rail voltages and drainage currents in cases without mitigation measures, with polarized drainage and with forced drainage. Time domain analysis included construction of frequency diagrams and linear correlation between pipe-to-soil potentials and pipe-to-rail voltages. Wavelet space analysis pinpoints time intervals with harmful stray current periods within them and resolves between the dominant potential shifts due to the nearby passing trains and distant trains in the transport network.

E. Sujitha, S. Senthilvel, A. Mihăilescu, S. K. Kasde, D. K. Sondhiya, Noé Díaz-Briceño, J. Horta-Rangel, J. Valdés-Vázquez et al.

Damir Franjić, Helena Karlović, Borko Rajič, I. Azinović, Martina Komšić, V. Mikulić, Božo Šušak, Tamara Miličević et al.

A. Hamidovic, K. Karapetyan, F. Serdarevic, S. Choi, T. Eisenlohr-Moul, G. Pinna

Although results of animal research show that interactions between stress and sex hormones are implicated in the development of affective disorders in women, translation of these findings to patients has been scarce. As a basic step toward advancing this field of research, we analyzed findings of studies which reported circulating cortisol levels in healthy women in the follicular vs. luteal phase of the menstrual cycle. We deemed this analysis critical not only to advance our understanding of basic physiology, but also as an important contrast to the findings of future studies evaluating stress and sex hormones in women with affective disorders. We hypothesized that cortisol levels would be lower in the follicular phase based on the proposition that changes in levels of potent GABAergic neurosteroids, including allopregnanolone, during the menstrual cycle dynamically change in the opposite direction relative to cortisol levels. Implementing strict inclusion criteria, we compiled results of high-quality studies involving 778 study participants to derive a standardized mean difference between circulating cortisol levels in the follicular vs. luteal phase of the menstrual cycle. In line with our hypothesis, our meta-analysis found that women in the follicular phase had higher cortisol levels than women in the luteal phase, with an overall Hedges' g of 0.13 (p < 0.01) for the random effects model. No significant between-study difference was detected, with the level of heterogeneity in the small range. Furthermore, there was no evidence of publication bias. As cortisol regulation is a delicate process, we review some of the basic mechanisms by which progesterone, its potent metabolites, and estradiol regulate cortisol output and circulation to contribute to the net effect of higher cortisol in the follicular phase.

H. Babačić, J. Lehtiö, M. Pernemalm

Objective: To explain the global between-countries variance in number of deaths per million citizens (nDpm) and case fatality rate (CFR) due to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Design: Systematic analysis. Data sources: Worldometer, European Centre for Disease Prevention and Control, United Nations Main outcome measures: The explanators of nDpm and CFR were mathematically hypothesised and tested on publicly-available data from 88 countries with linear regression models on May 1st 2020. The derived explanators - age-adjusted infection fatality rate (IFRadj) and case detection rate (CDR) - were estimated for each country based on a SARS-CoV-2 model of China. The accuracy and agreement of the models with observed data was assessed with R2 and Bland-Altman plots, respectively. Sensitivity analyses involved removal of outliers and testing the models at five retrospective and two prospective time points. Results: Globally, IFRadj estimates varied between countries, ranging from below 0.2% in the youngest nations, to above 1.3% in Portugal, Greece, Italy, and Japan. The median estimated global CDR of SARS-CoV-2 infections on April 16th 2020 was 12.9%, suggesting that most of the countries have a much higher number of cases than reported. At least 93% and up to 99% of the variance in nDpm was explained by reported prevalence expressed as cases per million citizens (nCpm), IFRadj, and CDR. IFRadj and CDR accounted for up to 97% of the variance in CFR, but this model was less reliable than the nDpm model, being sensitive to outliers (R2 as low as 67.5%). Conclusions: The current differences in SARS-CoV-2 mortality between countries are driven mainly by reported prevalence of infections, age distribution, and CDR. The nDpm might be a more stable estimate than CFR in comparing mortality burden between countries.

R. Rogoza, M. Żemojtel-Piotrowska, P. Jonason, J. Piotrowski, K. Campbell, Jochen E. Gebauer, J. Maltby, C. Sedikides et al.

The Dark Triad (i.e., narcissism, psychopathy, Machiavellianism) has garnered intense attention over the past 15 years. We examined the structure of these traits’ measure—the Dark Triad Dirty Dozen (DTDD)—in a sample of 11,488 participants from three W.E.I.R.D. (i.e., North America, Oceania, Western Europe) and five non-W.E.I.R.D. (i.e., Asia, Middle East, non-Western Europe, South America, sub-Saharan Africa) world regions. The results confirmed the measurement invariance of the DTDD across participants’ sex in all world regions, with men scoring higher than women on all traits (except for psychopathy in Asia, where the difference was not significant). We found evidence for metric (and partial scalar) measurement invariance within and between W.E.I.R.D. and non-W.E.I.R.D. world regions. The results generally support the structure of the DTDD.

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