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A report on numerical variations in the dorso-central setae pdx of Neophyllobius yunusi Akyol and Koç (Trombidiformes: Camerobiidae)
No full text<p><em>Neophyllobius </em>Berlese is the largest genus of the family Camerobiidae Southcott, with about 140 species to date. In this study, the presence of numerical variations in setae <em>pdx</em> of <em>Neophyllobius yunusi </em>Akyol and Koç, known from Türkiye, has been demonstrated for the first time.</p>
Enhancing NiCoB alloy coatings with hBN nanoparticles: exploring structural, mechanical, and corrosion improvements through pulse electrodeposition
No full text<p>NiCoB/hBN composite coatings deposited onto a 304 stainless steel substrate by pulsed current electrodeposition method. The morphology, chemical composition, structural, mechanical and corrosion properties of the coatings were investigated. Optimal microhardness, corrosion resistance, and a lower coefficient of friction were achieved when the hBN concentration in the plating bath was 8 g L-1 . Vickers microhardness increased from 610 to 980 HV and the coefficient of friction decreased from 0.53 to 0.4. Grain size decreased as the amount of added hBN increased, affecting the microstructure of the coating. Increasing the concentration of hBN in the plating solution increased the percentage of hBN particles in the film, reducing the percentage of total metal from 95.18% to 89.76%. The magnitude of the Nyquist parabola of the composite film from the bath containing 8 g L-1 hBN increased by an average of 5 times compared to that of the NiCoB metal alloy film.</p>
Genetic diversity of the Turkish accessions of two progenitor species, Triticum baeoticum Boiss. and Triticum urartu Thum. ex Gandil., using DArTSeq markers
No full text<p>The aim of this study was to reveal the intra and interspecies differences between Triticum baeoticum and Triticum urartu using Diversity Arrays Technology sequencing (DArTseq) on 94 accessions representing Turkish populations. Seeds were gathered from the US Department of Agriculture, and from the Turkish Seed Gene Bank. Isolated and purified DNA samples were sent to Diversity Arrays Technologies for DArTseq. After the necessary quality filtering, a total of 16,898 and 100,103 loci were obtained respectively from the single nucleotide polymorphism (SNP) and SilicoDArT datasets. ADMIXTURE software was used to reveal the intra and interspecies population structures. Analysis of molecular variance was carried out to reveal the variance between the populations of the T. urartu and T. baeoticum species. Principal coordinate analysis was conducted to visualize the main sources of variation between the populations on a 2-dimensional plane. To reveal the evolutionary relationship, SNP dataset was used to reconstruct the phylogenetic dendrograms by using the maximum likelihood statistical method and the unweighted pair group method with arithmetic mean clustering algorithm. As a result of this study, the accessions of T. urartu and T. baeoticum species formed separate clusters and revealed as two different species. In line with the results obtained, it is obvious that the identification of some accessions should be re-evaluated. The results demonstrated that DArTseq, is a fast, low-cost, and high-accuracy method that can be used in species and population discrimination and an effective tool for Gene Bank management.</p>
Magnetic and luminescence properties of bioactive glass nanoparticles for biomedical applications
No full text<p>This study explores the synthesis and characterization of superparamagnetic iron oxide nanoparticles (SPIONs) coated with zinc (Zn) and/or europium (Eu) doped bioactive glass. Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) confirmed spherical agglomerated morphology and core@shell structure, respectively. High-Resolution TEM (HR-TEM) revealed lattice fringe values consistent with the cubic magnetite phase. Magnetic property assessment showed stable superparamagnetic behavior with slight reductions in saturation magnetization (sigma s) after immersion in simulated body fluid (SBF) solution. Photoluminescence (PL) spectra of Eu-doped samples exhibited red emission, confirming Eu rare earth element incorporation and maintaining luminescence post-immersion in SBF. Upon the interaction with SBF, hydroxyapatite (HA) formation occurred on the nanoparticle surfaces, suggesting the bioactive nature of the nanoparticles. These findings suggest that the synthesized nanoparticles exhibit promising potential for biomedical applications, including imaging, and orthopedics, due to their bioactive, magnetic, and luminescent properties.</p>
Approximate solution of multi-term fractional differential equations via a block-by-block method
No full text<p>In this paper we introduce a block-by-block method for the numerical solution of multi-term fractional differential equations (MFDEs). The main idea is to convert a MFDE to a Volterra integral equation of weakly singular type, to which a well known block-by-block method is applied. We also provide the error analysis and convergence of the method. Finally, numerical examples involving Bagley-Torvik and relaxation-oscillation equations are given to confirm applications and the theoretical results.</p>
Electrochemical sensor for the analysis of 5-hydroxymethylcytosine in the presence of cytosine using pencil graphite electrode
No full text<p>In recent years, important efforts have been made to elucidate the mechanisms of epigenetic regulation, and one of the most studied epigenetic modifications was DNA methylation/demethylation. In this study, the voltammetric behaviour of 5-hydroxymethylcytosine was studied in the pH range of 2.00-11.00 using pencil graphite electrodes by differential pulse and square wave voltammetry. The effect of buffer solutions, scan rate, square wave voltammetry parameters, and stripping conditions on the voltammetric responses of 5-hydroxymethylcytosine were performed. The electrochemical oxidation process of 5-hydroxymethylcytosine on the pencil graphite electrode was realized under adsorption control. In human urine, by square wave stripping voltammetry, 5-hydroxymethylcytosine was quantified in a concentration range of 1.00 x 10(-5) M-2.00 x 10(-4) M. The proposed method was tested in the presence of cytosine in human urine. The recovery value of 5-hydroxymethylcytosine was found to be 99.57 %.</p>
HORIZON EUROPE RIA PROJECT - CULTURATI Prototype v.2_NIMBEO
No full text<p>The second version of the <strong>CULTURATI platform</strong> brings enhanced functionality and improved user experience.</p>
Experimental and numerical investigation on the influence of bilge keel shape on roll damping
No full text<p>Excessive roll amplitudes due to roll motion are undesirable in marine ships. Consequently, it is imperative to conduct a detailed analysis of roll motion and the associated roll damping characteristics. This study experimentally and numerically investigates the roll damping characteristics of bilge keels with various geometric shapes on a ship model under different roll amplitudes. By comparing the non-dimensional roll damping coefficients obtained from experiments and numerical analyses, it is observed that bilge keels with geometries differing from the conventional plate shape exhibit distinct roll damping coefficients. Specifically, bilge keels with sharper tip ends demonstrate higher roll damping coefficients. Based on these findings, it is recommended that the corners and tip end of bilge keels be sharpened to enhance the roll damping coefficient.</p>
BODIPY-mediated photosensitization approach to control maize (<i>Zea mays</i>) pathogenic fungus <i>Fusarium verticillioides</i>
No full text<p>Widespread use of fungicides has caused the fungi to gain resistance. Therefore, photodynamic inactivation (PDI) is a promising alternative to conventional fungicides. PDI uses light and a dye called a photosensitizer (PS) in the presence of oxygen to generate reactive oxygen species (ROS) in the illuminated area that eventually kills microorganisms. This study aimed to investigate the potential of novel BODIPY and commercial Rose Bengal (RB) dyes as PSs in PDI treatment on maize (Zea mays)-pathogenic fungus Fusarium verticillioides. PDI efficacy of both PSs was determined by the minimum inhibitory concentration (MIC) assay, a fluorometric assay using 2 ',7 '-dichlorofluorescein diacetate (DCFH2-DA) staining, pathogenicity test on the leaves of the host plant, and the expression of the candidate PS-targeted genes by RT-qPCR. Finally, MIC has recorded that the concentration causing the highest fungal growth inhibition was 33.38 mu g/ml for BODIPY and 134.4 mu g/ml for RB. While ROS increased by 2-fold in conidia treated to PDI with BODIPY, it was decreased by 2-fold with RB. The pathogenicity of F. verticillioides in PDI treatment with BODIPY (4 mu g/ml) or RB (16 mu g/ml) reduced by 88% or 91%. The expression of the candidate targets, Sterol 14 a-demethylase (Cyp51), mitochondrial cytochrome b (Cytb), and succinate dehydrogenase (SDH) genes were downregulated in response to PDI treatments. The results suggested that photoinactivation of fungal growth and pathogenicity increased with PS concentration, accompanied by ROS accumulation and Cyp51, Cytb, and SDH downregulation. These findings pointed out the potential of both PSs for PDI treatment as a new fungicide.</p>
Current research trends in child poverty and psychological resilience research: A bibliometric analysis approach
No full text<p>The first of the sustainable development goals is to end poverty by 2030. Although many individual, social, and psychological resources have been proposed to reduce poverty, little is known about psychological resilience factors and related variables in reducing it. While the literature on childhood poverty and psychological resilience indicates that there was a relationship between these variables, it also draws attention to the fact that a growing interest in the need to consider psychological factors in reducing child poverty. Contextually, this study is bibliometric research that aims to reveal the current research trends about child poverty and psychological resilience. The researcher reviewed the Web of Science to highlight current trends in child poverty and resilience research and found 1065 relevant documents that met the inclusion criteria. The research used co-occurrence, citation, and bibliographic coupling techniques from the bibliometric analysis type. Research results showed that poverty, resilience, children, protective factors, youth, parenting, COVID-19, stress, and mental health were the nine significant clusters where the poverty and resilience keywords were gathered (items = 120, links = 988, total link strength = 1646). The United States had the most publications and was the most collaborative country. The most associated SDG target was good health and well-being. Research trends underline that the five most studied keywords were resilience, poverty, children, health, and risk. Thematic map results indicated that socioeconomic status, childhood, and adjustment topics were important, well-developed, and structuring themes, while resilience, poverty, and children topics were essential themes but still needed to be well-developed. The research findings highlight the importance of resiliency factors that can potentially reduce child poverty. The results also give researchers essential insights into socioeconomic, mental, psychological, and environmental factors that they can use in their intervention practices holistically in reducing child poverty.</p>