Virtual reality (VR) provides a unique opportunity to simulate various environments, enabling the observation of human behavior in a manner that closely resembles real-world scenarios. This study aimed to explore the effects of anticipating reward or punishment, personality traits, and physiological arousal on risky decision-making within a VR context. A custom VR game was developed to simulate real-life experiences.
View Article and Find Full Text PDFBackground: This study investigates the relationship between DNA methylation (DNAm) and the personality traits outlined in the NEO-PI-R model through an epigenetic study of monozygotic twins. DNAm, a critical epigenetic mechanism, regulates gene expression and has been linked to various biological processes and disorders. By leveraging the genetic similarities of monozygotic twins, this research explores how epigenetic variations influenced by environmental factors correlate with personality differences.
View Article and Find Full Text PDFNanomaterials (Basel)
April 2024
Magnetite nanoparticles (NPs) possess properties that make them suitable for a wide range of applications. In recent years, interest in the synthesis of magnetite NPs and their surface functionalization has increased significantly, especially regarding their application in biomedicine such as for controlled and targeted drug delivery. There are several conventional methods for preparing magnetite NPs, all of which mostly utilize Fe(iii) and Fe(ii) salt precursors.
View Article and Find Full Text PDFA one-dimensional (1D) ladder-like coordination polymer {NH[{Cu(bpy)}(CO)Fe(CO)]·HO} (; bpy = 2,2'-bipyridine) containing [Cu(bpy)(μ-CO)Cu(bpy)] cationic units linked by oxalate groups of [Fe(CO)] building blocks was investigated as a new type of photoactive solid-state system. It exhibits a photocoloration effect when exposed to direct sunlight or UV/vis irradiation. The photochromic properties and mechanism were studied by powder and single-crystal X-ray diffraction, UV/vis diffuse reflectance, IR and electron paramagnetic resonance spectroscopy, magnetization and impedance measurements, and density functional theory calculations.
View Article and Find Full Text PDFBismuth ferrite (BFO, BiFeO), exhibiting both ferromagnetic and ferroelectric properties at room temperature, is one of the most researched multiferroic materials with a growing number of technological applications. In the present study, using a combined theoretical-experimental approach, we have investigated the influence of Ho-doping on the structural, electronic and magnetic properties of BFO. Synthesis and structural XRD characterization of BiHoFeO ( = 0.
View Article and Find Full Text PDFTetrachlorocuprate(II) hybrids of the three anisidine isomers (-, -, and -, or 2-, 3-, and 4-methoxyaniline, respectively) were prepared and studied in the solid state via X-ray diffraction and magnetization measurements. Depending on the position of the methoxy group of the organic cation, and subsequently, the overall cation geometry, a layered, defective layered, and the structure comprising discrete tetrachlorocuprate(II) units were obtained for the -, -, and -anisidinium hybrids, respectively. In the case of layered and defective layered structures, this affords quasi-2D-layered magnets, demonstrating a complex interplay of strong and weak magnetic interactions that lead to the long-range ferromagnetic (FM) order.
View Article and Find Full Text PDFTwo heterometallic coordination polymers {[NH(CH)(CH)][MnClCr(CO)]} () and {[NH(CH)-(CH)][MnClCr(CO)]} () were obtained by slow evaporation of an aqueous solution containing the building block [A][Cr(CO)] [A = (CH)(CH)NH or (CH)(CH)NH] and MnCl·2HO. The isostructural compounds comprise irregular two-dimensional (2D) oxalate-bridged anionic layers [MnClCr(CO)] with a Shubnikov plane net topology designated as (4·8), interleaved by the hydrogen-bonded templating cations (CH)(CH)NH () or (CH)(CH)NH (). They exhibit remarkable humidity-sensing properties and very high proton conductivity at room temperature [1.
View Article and Find Full Text PDFMOF-74 is an archetypal magnetic metal-organic framework (MOF) family, with metal nodes bridged by 2,5-dioxido-1,4-benzenedicarboxylic acid (Hdobdc) and arranged into one of the simplest representations of the 1D Ising magnetic model. Recently, a novel mechano-synthetic approach opened a pathway toward a series of bimetallic multivariate (1:1) M1M2-MOF-74 materials, with the uniform distribution of metal cations in the oxometallic chains, offering a unique opportunity to investigate low-dimensional magnetism in these heterometallic MOFs. We explore here how different mechanochemical procedures affect the interaction between the metal nodes of the model system of three multivariate copper(II)/zinc(II)-MOF-74 materials, two of which were obtained through a template-controlled procedure, and the third one was obtained by recently developed mechanical MOF-alloying combined with subsequent accelerated aging.
View Article and Find Full Text PDFSeven novel oxalate-based [CuCr] compounds: [Cu(terpy)Cl][Cr(CO)]·9HO (1; terpy = 2,2':6',2''-terpyridine), {[CrCu(HO)(terpy)(CO)]·10HO} (2), [CrCu(HO)(terpy)(CO)]·12HO (3), [Cu(HO)(terpy)][CrCu(HO)(terpy)(CO)]·9HO (4), [Cu(HO)(terpy)(NO)][CrCu(HO)(terpy)(CO)]·6HO (5), [CrCu(terpy)(CO)(NO)]·1.5HO·CHOH (6) and [CrCu(HO)(terpy)(CO)][CrCu(terpy)(CO)]·9HO·CHOH (7) were obtained from the reaction of an aqueous solution of the building block [Cr(CO)] and a methanol solution containing Cu ions and terpyridine ligand by the layering technique. Interestingly, changing only the anion of the starting salt of copper(II), NO instead of Cl, resulted in an unexpected modification in the bridge type, namely oxalate (compounds 2-7) chloride (compound 1).
View Article and Find Full Text PDFJ Hist Behav Sci
January 2023
This paper presents a brief history of Yugoslav psychology and a review of the current state of psychological research and practice in the former Yugoslav countries. Bibliometric mapping was used to explore the knowledge domain and international visibility of psychological research in Bosnia and Herzegovina, Croatia, North Macedonia, Montenegro, Serbia, and Slovenia. Judging by the number of papers visible in Scopus, psychological research activity in these countries is similar to the other former communist countries.
View Article and Find Full Text PDFUnlabelled: Presented study explores the knowledge domain of psychological research published in 2020 and 2021. Metadata from 156,942 psychology papers available in Scopus were analyzed using citation analysis and bibliographic mapping techniques. Having in mind the ubiquity of the COVID-19 pandemic and the numerous ways it has affected people's lives, the fact that COVID-19-related papers represent only 2% to 7% of the total academic production in psychology may seem rather low.
View Article and Find Full Text PDFFrom the reaction of 2-hydroxy-6-methylpyridine (L) with iron(II) tetrafluoroborate, a new mononuclear iron(III) octahedral complex [FeL](BF) has been isolated. The color of the complex reversibly changed from red at room temperature to yellow-orange at the liquid nitrogen temperature. Magnetization measurements indicate that iron(III) in [FeL](BF) is in a high-spin state = 5/2, from room temperature to 1.
View Article and Find Full Text PDFThe study of the transition from high-entropy alloys (HEAs) to conventional alloys (CAs) composed of the same alloying components is apparently important, both for understanding the formation of HEAs and for proper evaluation of their potential with respect to that of the corresponding CAs. However, this transition has thus far been studied in only two types of alloy systems: crystalline alloys of iron group metals (such as the Cantor alloy and its derivatives) and both amorphous (a-) and crystalline alloys, TE-TL, of early (TE = Ti, Zr, Nb, Hf) and late (TL = Co, Ni, Cu) transition metals. Here, we briefly overview the main results for the transition from HEAs to CAs in these alloy systems and then present new results for the electronic structure (ES), studied with photoemission spectroscopy and specific heat, atomic structure, thermal, magnetic and mechanical properties of a-TE-TL and Cantor-type alloys.
View Article and Find Full Text PDFA novel one-dimensional (1D) oxalate-bridged coordination polymer of iron(III), {[NH(CH)(CH)][FeCl(CO)]} (), exhibits remarkable humidity-sensing properties and very high proton conductivity at room temperature (2.70 × 10 (Ω·cm) at 298 K under 93% relative humidity), in addition to the independent antiferromagnetic spin chains of iron(III) ions bridged by oxalate groups ( = -7.58(9) cm).
View Article and Find Full Text PDFPure and Co-doped BaAlO [Ba(AlCo)O, = 0, 0.0077, 0.0379] powder samples were prepared by a facile hydrothermal route.
View Article and Find Full Text PDFHybrid metal-organic compounds as relatively new and prosperous magnetoelectric multiferroics provide opportunities to improve the polarization, magnetization and magneto-electric coupling at the same time, which usually have some limitations in the common type-I and type-II multiferroics. In this work we investigate the crystal of guanidinium copper (II) formate [C(NH2)3]Cu(HCOO)3 and give novel insights concerning the structure, magnetic, electric and magneto-electric behaviour of this interesting material. Detailed analysis of crystal structure at 100 K is given.
View Article and Find Full Text PDFThe heterodimetallic [CuFe] compounds [Cu(terpy)Cl][Fe(CO)]·10HO (;terpy = 2,2':6',2''-terpyridine), [Cu(HO)(terpy)(CO)][CuFe(CHOH)(terpy)(CO)] (), and {[CuFe(HO)(terpy)(CO)]·6HO} () were obtained using building block approach, from reaction of aqueous solution of [Fe(CO)] and a methanol solution containing Cu ions and terpy by the layering technique. Interestingly, by changing only the anion of the starting salt of copper(II), Cu(NO)·3HO instead of CuCl·2HO, an unexpected change in the type of bridge, oxalate ( and ) versus chloride (), was achieved, thus affecting the overall structural architecture. Two polymorphs of 3D coordination polymer [CuFe(HO)(terpy)(CO)] (), crystallizing in the triclinic () and monoclinic () space groups, were formed hydrothermally, depending on whether CuCl·2HO or Cu(NO)·3HO was added to the water, besides K[Fe(CO)]·3HO and terpy, respectively.
View Article and Find Full Text PDFOne-dimensional (1D) oxalate-bridged homometallic {[Mn(bpy)(CO)]·1.5HO} () (bpy = 2,2'-bipyridine) and heterodimetallic {[CrCu(bpy)(CHOH)(HO)(CO)][Cu(bpy)Cr(CO)]·CHCl·CHOH·HO} () coordination polymers, as well as the three-dimensional (3D) heterotrimetallic {[CaCrCu(phen)(CO)]·4CHCN·2HO} () (1,10-phenanthroline) network, have been synthesized by a building block approach using a layering technique, and characterized by single-crystal X-ray diffraction, infrared (IR) and impedance spectroscopies and magnetization measurements. During the crystallization process partial decomposition of the tris(oxalate)chromate(III) happened and 1D polymers and were formed.
View Article and Find Full Text PDFThe main aim of this study was to explore reactions to the COVID-19 pandemic and their relationship with personality traits using a person-centered approach. Sample of 471 Serbian citizens was collected during the first 7 weeks of the pandemic. Cluster analysis revealed three clusters based on reactions to the pandemic: Adapted, Antagonized, and Passive.
View Article and Find Full Text PDFThe COVID-19 pandemic, a health emergency with international consequences, has brought serious impact on all aspects of society and affects not only health and economy, but psychological functioning and mental health as well. This research was conducted in order to examine and further our understanding of emotional reactions to the ongoing pandemic. Change in emotional reactions during the pandemic and relations with specific pandemic related behaviors and personality traits from the revised Reinforcement sensitivity theory were explored.
View Article and Find Full Text PDFThe first twin study in Serbia began in 2011 as a part of the research project, 'Psychological Foundations of Mental Health: Hereditary and Environmental Factors'. At the same time, the research team from the Faculty of Philosophy and Faculty of Medicine in Novi Sad established the first Serbian twin registry. The registry is intended primarily for the purpose of the research in behavioral genetics, as well as potential future studies in human genetics.
View Article and Find Full Text PDFInorganic materials that enable a link between the storage and release of molecular oxygen offer a fertile ground in continuous quest for the applications that can potentially reduce energy consumption and thus minimize adverse effects on the environment. Herein, we address reversible intake/release of an oxygen within the BaAlO material as evidenced by unexpected magnetic ordering. Magnetic measurements unveil that an oxygen is stored in the form of condensed matter, creating a kind of low dimensional, chain-like assembly within the tunnels of BaAlO structure.
View Article and Find Full Text PDFThree heterometallic one-dimensional (1D) coordination polymers {A[CrCu(bpy)(CO)]·HO} [A = K (1) and NH (2); bpy = 2,2'-bipyridine] and [(CrO)Cu(CO)(phen)] (3; phen = 1,10-phenanthroline) with uncommon topology have been synthesized using a building block approach and characterized by single-crystal X-ray diffraction, IR and impedance spectroscopies, magnetization measurements, and DFT calculations. Due to the partial decomposition of the building block [Cr(CO)], all three compounds contain oxalate-bridged [Cu(L)(μ-CO)] units [L = bpy (1 and 2) and phen (3)]. In compounds 1 and 2 these cations are mutually connected through oxalate groups from [Cr(CO)], thus forming ladder-like topologies.
View Article and Find Full Text PDFThree heterometallic oxo-bridged compounds, [Cr(phen)(μ-O)Nb(CO)]·2HO (1; phen = 1,10-phenanthroline), [Cr(terpy)(HO)(μ-O)Nb(CO)]·4HO (2; terpy = 2,2';6',2''-terpyridine) and [Cr(terpy)(CO)(HO)][Cr(terpy)(CO)(μ-O)Nb(CO)]·3HO (3), have been synthesized using a building block approach and characterized by IR spectroscopy, single-crystal and powder X-ray diffraction, magnetization measurements, and DFT calculations. The molecular structures of 1 and 2, crystallizing in P422 and P2/n space groups, respectively, contain a square-shaped {Cr(μ-O)Nb} unit, while that of complex salt 3 (P1[combining macron] space group) consists of a mononuclear cation containing Cr and trinuclear anions in which two Cr ions are bridged by a -O-Nb-O- fragment. Besides hydrogen-bonding patterns resulting in a 1D- or 3D-supramolecular arrangement in 1-3, an unusual intermolecular contact has been noticed between parallel oxalate moieties occurring due to the electrostatic attraction of electron-rich carbonyl oxygen and severely electron-depleted carbon atoms in the crystal packing of 2.
View Article and Find Full Text PDFThe results of high-field electron spin resonance (HF-ESR) spectroscopy on the title 1D coordination polymers at frequencies up to 415 GHz, supported by X-ray diffraction, thermal, magnetic susceptibility, and X-band (10 GHz) ESR studies, are presented. The heterometallic compounds {SrCr(phen)(CO)}·HO (SrCrPhen) and {SrCr(bpy)(CO)(HO)}·5HO (SrCrBpy) (phen = 1,10-phenanthroline, bpy = 2,2'-bipyridine) were synthesized. Structural analysis revealed double oxalate-bridged zigzag Sr-Cr chains while magnetic susceptibility studies showed paramagnetic behaviour of the complexes.
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