Site-selective quantum correlations revealed by magnetic anisotropy in the tetramer system SeCuO3

We present the investigation of a monoclinic compound SeCuO3 using x-ray powder diffraction, magnetization, torque and electron-spin-resonance (ESR). Structurally based analysis suggests that SeCuO3 can be considered as a 3D network of tetramers. The values of intra-tetramer exchange interactions are extracted from the temperature dependence of the susceptibility and amount to ~200 K. The inter-tetramer coupling leads to the development of long-range antiferromagnetic order at TN = 8 K. An unusual temperature dependence of the effective g-tensors is observed, accompanied with a rotation of macroscopic magnetic axes. We explain this unique observation as due to site-selective quantum correlations

Correlation of Grape Yield and Soil Properties in Two Serbian Locations: a GIS Based Support Technology

Biological characteristic of a grapevine genotype supposed to give high quality grapes is the most important factor in viticulture only if combined with ecological characteristics and technology. Differences among vineyard locations, expressed by soil properties and microclimate conditions, result in producing grapes with different characteristics. The different grape characteristics further affect wine and its properties, so wines take the character of the area in which the vine has been cultivated. One of the problems in production of high quality grapes is caused by the variability of soil properties. Vineyard experiments have been conducted in two different locations in Serbia: Vrsac and Radmilovac. Obtained results of soil properties indicated heterogeneity in the soil pH, phosphorus and potassium content. The soil pH in H2O at Vrsac locality, varied from 5.02 to 6.04 at 0-30 cm depth, and from 5.20 to 5.94 at 30-60 cm depth, while pH values in KCl ranged from 4.31 to 4.89 at the first depth, and from 4.32 to 4.99 at the second depth. In Radmilovac locality, pH in H2O varied from 4.90 to 8.71 at the depth of 0-30 cm, while at the depth of 30-60 cm it ranged from 4.95 to 8.09. Soil pH value in KCl varied from 3.85 to 7.93 at the first depth, and from 3.89 to 7.24 at the second depth. Measured results were tested with Spearman test and the correlation between the yield and the number of bunches on the vine on the one hand, and soil parameters on the other hand, at first location ("Radmilovac") and both depths, were found. Spatial distribution of soil properties and yield is presented through maps created in GIS framework by inverse distance weight method

CORRELATION OF GRAPE YIELD AND SOIL PROPERTIES IN TWO SERBIAN LOCATIONS: A GIS BASED SUPPORT TECHNOLOGY

Biological characteristic of a grapevine genotype supposed to give high quality grapes is the most important factor in viticulture only if combined with ecological characteristics and technology. Differences among vineyard locations, expressed by soil properties and microclimate conditions, result in producing grapes with different characteristics. The different grape characteristics further affect wine and its properties, so wines take the character of the area in which the vine has been cultivated. One of the problems in production of high quality grapes is caused by the variability of soil properties. Vineyard experiments have been conducted in two different locations in Serbia: Vrsac and Radmilovac. Obtained results of soil properties indicated heterogeneity in the soil pH, phosphorus and potassium content. The soil pH in H2O at Vrsac locality, varied from 5.02 to 6.04 at 0-30 cm depth, and from 5.20 to 5.94 at 30-60 cm depth, while pH values in KCl ranged from 4.31 to 4.89 at the first depth, and from 4.32 to 4.99 at the second depth. In Radmilovac locality, pH in H2O varied from 4.90 to 8.71 at the depth of 0-30 cm, while at the depth of 30-60 cm it ranged from 4.95 to 8.09. Soil pH value in KCl varied from 3.85 to 7.93 at the first depth, and from 3.89 to 7.24 at the second depth. Measured results were tested with Spearman test and the correlation between the yield and the number of bunches on the vine on the one hand, and soil parameters on the other hand, at first location ("Radmilovac") and both depths, were found. Spatial distribution of soil properties and yield is presented through maps created in GIS framework by inverse distance weight method

Genetic divergence estimated by RAPD markers and its relationship with hybrid performance in popcorn

The objective of this study was to evaluate the genetic diversity of six popcorn inbred lines and to determine the relationship between combing ability and heterosis for grain yield and popping expansion and genetic distance, using random amplified polymorphic DNA (RAPD) molecular markers. The genetic distance based on Dice coefficient ranged from 0.086 to 0.212. The highest genetic distance was found between inbreds ZPL2 and ZPL5. Hybrid combination of these two inbreds has the highest grain yield, grain yield heterosis and popping expansion heterosis. A positive and significant correlation was observed in parental lines between grain yield and SCA with genetic distance based on RAPD markers. The genetic divergence, however, was not enough to determine the grain yield heterosis as well as heterosis and specific combining ability for popping expansion

Chemical, rheological and sensory characteristics of sweet spreads made from by‐products of soya bean and maize

Sweet maize cob (SMC) and black soya bean seed coat (BSC) were used to prepare a sweet spread. Chemical composition of the prepared spread and its rheological and sensory characteristics were investigated. The results were compared with those of commercial plum and raspberry jams and spreads. Spreads made from SMC and BSC had the highest content of proteins, total fibres, hemicellulose and cellulose. In relation to fruit jams, they are distinguished by the presence and content of p-coumaric, ferulic and 3,4-dihydroxybenzoic acids, as well as of flavonoids such as catechin and quercetin. SMC spread with 3.2% of BSC had the highest content of total anthocyanins (666.75 mg CGE kg 1) (cyanidin 3-glucoside equivalent). Cyanidin-3-glucoside (Cy-3-Glu) was the most abundant anthocyanins in SMC/BSC containing spreads, while in raspberry jam, that was cyanidin-3-sophoroside (Cy-3-Sop). According to chemical, rheological and sensory properties, SMC/BSC containing spreads could be competitive with fruit jams and spreads

Strain-Induced Extrinsic High-Temperature Ferromagnetism in the Fe-Doped Hexagonal Barium Titanate

Diluted magnetic semiconductors possessing intrinsic static magnetism at high temperatures represent a promising class of multifunctional materials with high application potential in spintronics and magneto-optics. In the hexagonal Fe-doped diluted magnetic oxide, 6H-BaTiO3-δ, room-temperature ferromagnetism has been previously reported. Ferromagnetism is broadly accepted as an intrinsic property of this material, despite its unusual dependence on doping concentration and processing conditions. However, the here reported combination of bulk magnetization and complementary in-depth local-probe electron spin resonance and muon spin relaxation measurements, challenges this conjecture. While a ferromagnetic transition occurs around 700 K, it does so only in additionally annealed samples and is accompanied by an extremely small average value of the ordered magnetic moment. Furthermore, several additional magnetic instabilities are detected at lower temperatures. These coincide with electronic instabilities of the Fe-doped 3C-BaTiO3-δ pseudocubic polymorph. Moreover, the distribution of iron dopants with frozen magnetic moments is found to be non-uniform. Our results demonstrate that the intricate static magnetism of the hexagonal phase is not intrinsic, but rather stems from sparse strain-induced pseudocubic regions. We point out the vital role of internal strain in establishing defect ferromagnetism in systems with competing structural phases

Trauma of the frontal region is influenced by the volume of frontal sinuses. A finite element study

© 2017 Pajic, Antic, Vukicevic, Djordjevic, Jovicic, Savic, Saveljic, Janovic, Pesic, Djuric and Filipovic. Anatomy of frontal sinuses varies individually, from differences in volume and shape to a rare case when the sinuses are absent. However, there are scarce data related to influence of these variations on impact generated fracture pattern. Therefore, the aim of this study was to analyse the influence of frontal sinus volume on the stress distribution and fracture pattern in the frontal region. The study included four representative Finite Element models of the skull. Reference model was built on the basis of computed tomography scans of a human head with normally developed frontal sinuses. By modifying the reference model, three additional models were generated: a model without sinuses, with hypoplasic, and with hyperplasic sinuses. A 7.7 kN force was applied perpendicularly to the forehead of each model, in order to simulate a frontal impact. The results demonstrated that the distribution of impact stress in frontal region depends on the frontal sinus volume. The anterior sinus wall showed the highest fragility in case with hyperplasic sinuses, whereas posterior wall/inner plate showed more fragility in cases with hypoplasic and undeveloped sinuses. Well-developed frontal sinuses might, through absorption of the impact energy by anterior wall, protect the posterior wall and intracranial contents

Alkyl polyglucoside vs. ethoxylated surfactant-based microemulsions as vehicles for two poorly water-soluble drugs: physicochemical characterization and in vivo skin performance

Two types of biocompatible surfactants were evaluated for their capability to formulate skin-friendly/non-irritant microemulsions as vehicles for two poorly water-soluble model drugs differing in properties and concentrations: alkyl polyglucosides (decyl glucoside and caprylyl/capryl glucoside) and ethoxylated surfactants (glycereth-7-caprylate/ caprate and polysorbate 80). Phase behavior, structural inversion and microemulsion solubilization potential for sertaconazole nitrate and adapalene were found to be highly dependent on the surfactants structure and HLB value. Performed characterization (polarized light microscopy, pH, electrical conductivity, rheological, FTIR and DSC measurements) indicated a formulation containing glycereth- 7-caprylate/caprate as suitable for incorporation of both drugs, whereas alkyl polyglucoside-based systems did not exhibit satisfying solubilization capacity for sertaconazole nitrate. Further, monitored parameters were strongly affected by sertaconazole nitrate incorporation, while they remained almost unchanged in adapalene-loaded vehicles. In addition, results of the in vivo skin performance study supported acceptable tolerability for all investigated formulations, suggesting selected microemulsions as promising carriers worth exploring further for effective skin delivery of model drugs