bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of the effects of platelet-rich plasma injection on the human body depending on the site of administration – review article
Authors: Przeradzki Jakub , Lubczyńska Zuzanna , Kotulska Maria , Lichman Martyna , Rząd Katarzyna , Borycka Aleksandra , Potocka Zofia , Laskus Paulina , Jędrzejewska Barbara , Wieliński Łukasz
Published: May 2023

Introduction:
Platelet-rich plasma (PRP) is an autologous material. It is created by drawing the patient's blood and preparing it properly. In that, a several-fold increase in platelets and growth factors is achieved. By applying the PRP prepared this way to the appropriate tissue, it is possible to improve the clinical condition of many disorders.

Purpose:
Analysis of the effects of platelet-rich plasma injection on the human body depending on the site of administration. Review of literature.

Material and methods:
We have selected, in our opinion, the most important information from articles about the use of PRP in: androgenetic alopecia, hair regrowth, wound healing, atrophic acne scars, erectile dysfunction, gynecology and improving women's sexual satisfaction, osteoarthritis and skin rejuvenation.

Summary (conclusion):
Thanks to its properties, platelet-rich plasma (PRP) can stimulate the human body to regenerate. Androgenetic alopecia, hair regrowth, acceleration of wound healing, acne scars, erectile dysfunction and osteoarthritis are just some of the disorders in which the use of platelet-rich plasma proves to be promising. From the studies above it can be concluded that the effects of local PRP injections can be complementary to the therapy of many other diseases. However, more adequate research is needed to register the application of local platelet-rich plasma as a form of treatment for these diseases.
Could Vocational Education Benefit From Augmented Reality and Hypervideo Technologies? An Exploratory Interview Study
Authors: Candido Vito , Raemy Patric , Amenduni Francesca , Cattaneo Alberto
Published: May 2023

Context: This study investigates the perspective of vocational educators on the possibility of adopting augmented reality (AR) and hypervideo (HV) technologies to support their teaching practice. Vocational education and training (VET) is particularly concerned with the learning of resources (knowledge, skills and attitudes) that are immediately transposable into conduct and procedures in the workplace. AR and HV can provide means to answer this requirement, but both technological solutions are still not so diffused in VET. The purpose of this study is to inquire into the perception of educators on the main advantages and disadvantages of using AR and HV to support teaching-and-learning. Methods: A semi-structured interview protocol has been proposed to 73 teachers, intercompany trainers and in-company trainers in 10 professions (at least two per category within each profession). The interview was organized in two main steps: A need analysis, in which the most important and difficult operative skills are identified for the interviewee's profession; and a discussion of advantages and disadvantages of AR and HV. Content analysis was applied to the interview transcriptions. Results: The results show that the main advantages reported in the literature for the two technologies – such as the ability to switch between 2D and 3D and carry out simulations – are also found in the VET context by educators. For HV the main technical advantages (such as the use of active points, and non-linear navigation of video content) were autonomously recognised, while the potential of the instrument to support reflection has not been clearly identified. Conclusions: AR and HV are considered as tools able to support apprentices' procedural learning especially with regard to the operational skills which were judged by the educators to be most relevant for VET.
Parasitological detection of Theileria parasites in livestock in various regions of the Northern Emirates of the United Arab Emirates
Authors: Ismaeil Sameera M. A. , Parambil Rajeesh K. T. , Kerab Manal S. , ElBakri Ali M. K. , Abu-Abdoun Ideisan I.
Published: May 2023

Background and Aim: Theileriosis, caused by tick-borne hemoprotozoans of the genus Theileria, severely impacts the economics of the livestock industry in most tropical and subtropical countries. The aim of the present study was to detect Theileria spp. in domesticated animals (camels, cows, sheep, and goats) using direct microscopy and to determine the infection rate in geographically distinct regions in the northern emirates of the UAE.

Materials and Methods: Blood samples (n = 536) were collected from clinically symptomatic and asymptomatic domesticated animals and subjected to Giemsa staining and examined microscopically for the identification of Theileria.

Results: Smears showed an overall rate of positivity for Theileria spp. in 325/536 (60.6%) animals. Different infection rates were recorded across the various animal groups in the different study areas (Middle region 215/386 [55.7%], East region 100/139 [71.9%]). Of the 11 goat samples collected from the North region, 10 (90%) were positive. Infection rates per animal group based on microscopy were as follows: camels, 3/35 (8.5%); cows, 19/36 (52.7%); goats, 200/303 (66%); and sheep, 103/162 (63.5%). Reverse transcription polymerase chain reaction confirmation of all microscopy-positive samples identified 23/325 (7.1%) results as false-positive.

Conclusion: This study clarified that Theileria spp. is present in the Middle (Sharjah, Umm Al Quwain, and Ajman), East, and North regions. This report also confirmed the use of direct microscopy with Giemsa-stained blood films as the method of choice for diagnosing acute infections. Further work is needed to molecularly determine the prevalence and species of Theileria spp. circulating in the different parts of the UAE.

Keywords: microscopic examination, Theileria, UAE.
II. DÜNYA SAVAŞI YILLARINDAN GÜNÜMÜZE İNSANLIĞIN YILLARDIR DEĞİŞMEYEN SORUNU ‘GIDA KRİZİ’NE ÜN DERGİSİNDEN BAKMAK
Authors: GÖKMEN Mustafa , YILMAZ Süleyman Hakan
Published: May 2023

İkinci Dünya Savaşı’nın çıkmasıyla birlikte Türkiye’de ciddî savaş korkusu ve endişe yaşanmıştır. Türkiye’nin genç ve çalışma çağındaki erkek nüfusu savaş sebebiyle silah altına alınmıştır. Bu durum tarımsal üretimde ciddî düşüşe sebep olmuştur. Buna bağlı olarak halkın beslenme sorunu baş göstermiştir. Dünya ekonomik bunalımının ardından Türkiye’de 1929 yılında İktisat ve Tasarruf Cemiyeti kurulmuştur. Cemiyet, milli iktisat politikalarının belirlenmesi, yerli malı kullanımını teşvik konularında faaliyetlerde bulunmuştur. Planlı Ekonomik faaliyetlerin gelişmesi için de çalışmalar yapan Cemiyet, 1936 yılında Ulusal Ekonomi ve Artırma Kurumu adını alarak faaliyetlerini sürdürmüştür. 1939 yılında II. Dünya Savaşı’nın çıkması üzerine Ulusal Ekonomi ve Artırma Kurumu da tasarrufu ve üretimi arttırmak için çalışmalara yoğunlaşmıştır. Bu araştırmada Ulusal Ekonomi ve Artırma Kurumu tarafından Isparta Halkevi’nin yayın organı Ün dergisinde yayınlanan halkı üretime ve tasarrufa teşvik eden duyurular incelenmiştir. II. Dünya Savaşı devam ederken 1940 ve 1941 yıllarında yayımlanan duyurular Nitel İçerik Analizi yöntemiyle analiz edilerek ulaşılan sonuçlar anlamlı bütün haline getirilerek çalışma sonuçlandırılmıştır.
A CONTENT ANALYSIS OF INTERNAL AUDIT REPORTS PUBLISHED BY THE WORLD FOOD PROGRAMME (WFP)
Authors: AÇIK TAŞAR Sezin
Published: May 2023

International aid organizations organize aid campaigns to reduce poverty in the world and support global economic growth. One of these organizations, the World Food Programme (WFP), aims to end the threat of hunger in the world. The aim of the study was to analyze the internal audit reports containing the countries in need and aid types that WFP, a leading international aid organization, focuses on, using the content analysis method. According to the results obtained in the study, Mozambique with 10 risks was the country with the highest number of risks among the countries in which internal audit was conducted by WFP in 2022, and the country with the lowest number of risks was Jordan with 4 risks. Another result of the study was that Haiti is the country with the highest number of high-risk observations. Apart from this, while no high risk was detected in the audits carried out in Guatemala, Iran, South Sudan, Afghanistan and Mauritania, it was another remarkable result that at least one high risk was detected in other countries.
Novedades en Calibrachoa (Solanaceae) y notas taxonómicas sobre el género para la Argentina
Authors: Greppi Julián A. , Hagiwara Juan C. , Stehmann João R.
Published: May 2023

A new subspecies of Calibrachoa from Argentina and Brazil is described and ilustrated: C. linoides subsp. furcata. Calibrachoa heterophylla is excluded from the Argentinean flora. Calibrachoa linearis and Petunia thymifolia f. gracilis are considered as new synonyms of C. thymifolia, and misinterpretations about two species (C. pubescens and C. humilis) previously cited for Argentina are clarified. Lectotypes are designated for Fabiana thymifolia, Petunia thymifolia f. gracilis, and Salpiglossis linearis (= C. thymifolia).
Nota sobre el género Imperata (Poaceae, Panicoideae, Sacchareae) en Argentina
Authors: Peichoto Myriam C.
Published: May 2023

This work confirms the presence of Imperata tenuis in Argentina, and includes an illustration, reference material, a map showing its geographic distribution in southern South America, and a key to identify the species of Imperata that inhabit Argentina.
Contributions to the moss flora of Uruguay: the genus Pohlia (Bryophyta, Bryales), a new record
Authors: Suárez Guillermo M. , Schiavone María M.
Published: May 2023

The genus Pohlia is reported as a new record for Uruguay, where it is represented by two species: P. wahlenbergii and P. humilis (=P. tenuifolia). Pohlia humilis is also recorded as new for Colombia. We propose P. loriformis, a poorly known species described from Bolivia, as new synonym of P. humilis. We select lectotypes for P. loriformis and Mielichhoferia brachycarpa. We also include a key to the Pohlia species from Uruguay, and the South American synonyms, brief comments, distribution, and illustrations for P. humilis.
Explotación de especies vegetales en la Patagonia septentrional: el registro arqueobotánico de Cueva Huenul 1 (Provincia de Neuquén, Argentina)
Authors: Llano Carina , Barberena Ramiro
Published: May 2023

We present the analysis of plant remains recovered from the archaeological site Cueva Huenul 1, Neuquén Province, Argentina, which provides new insights on the timing of peopling, environment exploitation and use of plant resources. The chronological sequence of the site extends from the Pleistocene-Holocene transition to recent times. The archaeological remains might have been deposited by societies with a hunter-gatherer subsistence. The recovered taxa correspond to native wildlife, which are consistent with the landscape of northern Patagonia, as well as to one domesticated taxon (Lagenaria sp.). The assemblage is studied from a taphonomic perspective to assess the influence of anthropic and natural processes of formation. Finally, these results were integrated with other archaeological and palaeoecological data, allowing a first assessment of human subsistence at the scale of the site. The spatial expansion of this study will provide the basis to study the variation in human subsistence across different environmental settings in northwestern Patagonia.
El género Hymenasplenium (Aspleniaceae) en Argentina
Authors: Giudice Gabriela E. , Luna María L. , Ganem M. Alejandra
Published: May 2023

A review of the Hymenasplenium species from Argentina is presented and their morphology and palynology are analyzed. Two species are recognized: H. laetum growing in Misiones, Salta and Tucumán, of terrestrial habit, and H. triquetrum which grows as saxicolous in Misiones. For both species, iconographies, descriptions, and distribution maps, are given. The diagnostic value of characteristics of the root inner cortex to differentiate both genera of Aspleniaceae, and the presence of two types of spores ornamentation in Hymenasplenium, are corroborated. Illustrations of the morphological features of the roots, petioles, and spores are presented.
Identidad taxonómica de Schinopsis lorentzii y Schinopsis marginata (Anacardiaceae)
Authors: Flores Carolina B. , Zapater María A. , Sühring Silvia
Published: May 2023

Schinopsis lorentzii and S. marginata are closely related species that have been mainly differentiated by the shape, apex and color of the folioles, and also by their physiographical and altitudinal distribution. Nevertheless, these characters are intermediate and confusing between both species. In order to evaluate whether S. lorentzii and S. marginata can be differentiated on a morphological basis, the relationships among 89 specimens of both species were studied. A matrix of 29 morphological characters was analyzed by clustering and ordination methods. Both the dendrogram and the distribution of specimens in the Principal Components Analysis suggest that the limit between both species is not clear and none of the morphological characters are useful to differentiate them. We conclude that the morphological variations are related to altitudinal gradients and, consequently, S. marginata is placed under the synonymy of S. lorentzii (syn. nov.). The species is described and illustrated. A lectotype for Loxopterigium lorentzii is designated.
Biodiversity of Agaricomycetes basidiomes associated to Salix and Populus (Salicaceae) plantations
Authors: Romano Gonzalo M. , Calcagno Javier A. , Lechner Bernardo E.
Published: May 2023

Although plantations have an artificial origin, they modify environmental conditions that can alter native fungi diversity. The effects of forest management practices on a plantation of willow (Salix) and poplar (Populus) over Agaricomycetes basidiomes biodiversity were studied for one year in an island located in Paraná Delta, Argentina. Dry weight and number of basidiomes were measured. We found 28 species belonging to Agaricomycetes: 26 species of Agaricales, one species of Polyporales and one species of Russulales. Our findings suggest that forest management practices on plantations of willow and poplar do not affect either the abundance or diversity of Agaricomycetes basidiomes.
Sinopsis de las Apocynaceae s. str. (Apocynoideae y Rauvolfioideae) de Chile
Authors: Morales J. Francisco
Published: May 2023

A synopsis and nomenclatural revision of the Apocynaceae s. str. (Apocynoideae and Rauvolfioideae) from Chile is here presented. Lectotypes are designated for Echites heterophyllus, Echites ptarmicus, and Skytanthus acutus. A key, descriptions, geographical distribution data in Chile, and illustrations for the native species are included.
Nanostructured composites with precipitated silica – Ni crystallites coated by char with carbonized starch
Authors:   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Gun'ko V. M. , Charmas B. ,   Maria Curie–Skłodowska University Poland, Skubiszewska–Zięba J. ,   Maria Curie–Skłodowska University Poland
Published: May 2023

Hybrid carbons/metals/metal (metalloid) oxides composites could be effective adsorbents for low– and high–molecular weight compounds, polar and nonpolar, gaseous and liquid. The presence of metal nanocrystallites and carbon nanostructures could provide catalytic properties in redox reactions. For more effective use of hybrid composites, their morphological, structural, textural, and adsorption characteristics should be appropriate for target applications and, therefore, well controlled. Therefore, the aim of this study was to synthesize carbon/metal/silica nanostructured composites with varied content of metal (Ni) to control the mentioned characteristics. Precipitated silica Sipernat 50 was selected as a substrate. Potato starch was used as a carbon precursor. Nickel nitrate (Ni(NO3)2·6H2O) of varied amounts was used as a precursor of Ni nanoparticles reduced upon the starch carbonization. After the starch carbonization and Ni reduction, a set of C/Ni/silica samples was studied using atomic force microscopy, X–ray diffraction, X–ray fluorescence spectroscopy, nitrogen and p-nitrophenol adsorption, thermogravimetry, and Raman spectroscopy. The presence of nickel phase results in the formation of smaller but denser packed char nanoparticles. Estimation of possible contribution of pores accessible for nitrogen molecules in silica globules and outer surface of carbon/Ni particles suggests that the carbon phase is porous that provides a significant part of the specific surface area of the composites. Amorphous silica and char phases are characterized by the presence of certain nuclei of radius (R) < 1 nm and 2 nm < R < 10 nm estimated from the XRD patterns using full peak profile analysis with a self–consistent regularization procedure. Ni crystallites are of several sizes, since particle size distributions include two–three peaks in the range of 3–13 nm in radius. The Raman spectra show that the main changes with increasing Ni content are characteristic to sp3 carbon structures (D line) in contrast to the sp2 structures (G line). The pore size distributions (both differential and incremental) demonstrate complex changes in a broad size range due to increasing Ni content in composites. As a whole, changes in the Ni content in nanostructured C/Ni/silica composites allow one to control the morphological, structural, and textural characteristics of the whole materials.
Quantum computations and density functional theory on corrosion inhibition efficiency of BIA, HBT, MBI and PIZ compounds
Authors:   University of Raparin Iraq, Mamand D. M. , Qadr H. M. ,   University of Raparin Iraq
Published: May 2023

This study determined the corrosion inhibition levels of benzimidazole (BIA), 1-hydroxybenzotriazole (HBT), methylbenzimidazole (MBI) and 4-phenylimidazole (PIZ). By using simulation, it was possible to have a complete relationship with the experimental work because the results were completely consistent. Density functional theory (DFT) and Monte Carlo simulations were used to calculate several quantum chemical parameters. The molecules are simulated using quantum chemical calculations with Gaussian09 software. Fundamental factors determining the corrosion order of molecules are the highest-energy occupied and lowest-energy unoccupied molecular orbitals (HOMO and LUMO), frontier molecular orbital energy, back donating energy, electrophilicity, nucleophilicity, energy gap ∆E, absolute electronegativity (χ), softness, the number of electrons (∆N) transferred from inhibitors to iron, the dipole moment (μ), the global hardness (η) and the total energy.
Synthesis and electrophysical properties of nanostructured composites NіCо/BaTiO3 and NiCo/TiO2
Authors:   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Makhno S. M. , Lisova O. M. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Gunya G. M. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Gorbyk P. P. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Kartel M. T. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
Published: May 2023

Nanocomposites containing components with semiconductor, ferroelectric, and ferromagnetic properties have attracted considerable attention of specialists due to the range of possible applications, including catalysis and electrocatalysis, electrode materials for solar and fuel cells, capacitors, electrical and biosensors, anti-corrosion coatings and much more. In recent years, both fundamental and applied interest in this direction of research is due to the possibility of creating a new type of controlled microwave devices and tools. The aim of the work is to develop methods for the synthesis of nanostructured NiCo composites based on BaTiO3 and TiO2, as well as to find the differences and regularities of their physicochemical properties. Two series of samples with different content of NiCo nanoparticles based on titanium oxide (TiO2) and barium titanate (BaTiO3) were obtained. NiCo particles were obtained by the method of chemical precipitation of nickel and cobalt carbonates in equal parts from a hydrazine hydrate solution at the temperature of 350 K. The results of X-ray phase analysis indicate the chemical purity of the obtained samples. The values of ε′, ε″ at a frequency of 9 GHz for the NiCo/BaTiO3 system are twice as high compared to NiCo/TiO2 for the corresponding values of the NiCo content, which is due to the higher values of ε′, ε″ of the initial barium titanate. Electrical conductivity of NiCo/BaTiO3 system changes by six orders of magnitude, which indicates the formation of a continuous percolation cluster of metal particles on the surface of dielectric BaTiO3 particles. The composites are heat-resistant up to 630K, as shown by the method of thermogravimetry and pronounced magnetic properties. The program for calculating frequency dependences of reflection and absorption coefficients in a complex form has been developed. EMF absorption for composites from the radiation frequency and the position of the minima of these characteristics, which agree satisfactorily with the experiment. The obtained composites can be promising components for obtaining composite systems and paints for protection against electromagnetic radiation.
Features of the synthesis of straight and spiral carbon nanotubes by the pyrolytic method
Authors:   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Zolotarenko Ol. D. , Zolotarenko An. D. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Rudakova E. P. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Akhanova N. Y. ,   Kazakhstan-British Technical University, Ualkhanova M. ,   National Nanotechnology Open Laboratory, al-Farabi Kazakh National University Kazakhstan, Schur D. V. ,   Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Gabdullin M. T. ,   Kazakhstan-British Technical University Kazakhstan, Myronenko T. V. ,   Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Zolotarenko A. D. ,   Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Chymbai M. V. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Zagorulko I. V. ,   G.V. Kurdyumov Institute for Metal Physics of National Academy of Sciences of Ukraine, Havryliuk O. O. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
Published: May 2023

The goal of the research work was the pyrolytic synthesis of straight and spiral carbon nanotubes of approximately the same diameter, as well as their comprehensive analysis. To solve the given problem, a new installation for the pyrolytic synthesis of carbon nanostructures (CNS) with a fusion reactor, which for each fusion process can have its own angle relative to the classical horizontal position of the reactor axis. This reactor made it possible to develop a method for obtaining conglomerates of spiral-shaped multi-walled carbon nanotubes with a diameter of 15–60 nm and to synthesize straight multi-walled carbon nanotubes with a diameter of 5 to 60 nm. The research of pyrolytic synthesis of carbon nanostructures in a vertical reactor allows to work out the technology of purposeful synthesis of nanotubes that have a spiral shape with a certain diameter and pitch of the turn. As part of the work, a new mechanism for the formation of spiral multi-walled carbon nanotubes is also considered and proposed, which is important for their further industrial synthesis and their use in related composites. A scheme is proposed of conditions for the synthesis of carbon nanostructures by the pyrolytic method. Thermal analysis was carried out in the work, which recorded the presence of two different structures with low thermal stability (probably amorphous carbon and higher hydrocarbons). When using scanning and transmission electron microscopy, the formation of spiral nanofibers with a diameter of 15–60 nm in the vertical position of the reactor was recorded, and in the horizontal position of the reactor, the formation of straight and slightly curved MWCTs with a diameter of nanofibers from 5 to 60 nm was found. Raman spectroscopy confirms the presence of multi-layered carbon tubular formation, i.e. MWCT, in both synthesis products.
Embedded atoms in a crystalline hexagonal structure
Authors:   Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Matysina Z. A. , Zolotarenko An. D. ,   Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Zolotarenko Ol. D. ,   Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Myronenko T. V. ,   Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Schur D. V. ,   Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Rudakova E. P. ,   Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Chymbai M. V. ,   Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Zolotarenko A. D. ,   Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Zagorulko I. V. ,   G.V. Kurdyumov Institute for Metal Physics of National Academy of Sciences of Ukraine, Havryliuk O. O. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
Published: May 2023

As part of the work, the hexagonal structure of B19 type metals as hydrogen sorbents will be considered. That is, crystal lattices are considered, where atoms of impurities (hydrogen) are introduced into the interstices of the metal. To do this, we present an image of the B19 structure itself. In this work, the solubility of hydrogen in the crystal structure of B19 type metals was studied using the configuration method, and the dependence on the composition of the alloy and temperature was found in the substitution of nodes and interstices. Also, in the work the degrees of long-range order at the nodes are considered and the parameters of the correlation in the substitution are determined. A graphical view of the effect of atomic order on the solubility of impurities is given. The calculated data obtained in the work coincide with the experimental data of other studies, and the obtained calculation formulas make it possible to determine the energy parameters of the alloys, which is a certain scientific value of the work. The proposed system takes into account only atomic interaction and absorption (dissolution) and diffusion of interstitial atoms into the bulk of the crystal structure; therefore, it is possible to predict the introduction of only a hydrogen atom. Thus, the results obtained in the work of the correlation parameters for the distribution of atoms only in octapores or only in tetrapores allow a deeper study of the physical characteristics of alloys of the B19 type and an understanding of the processes of hydrogen sorption by the working bodies of hydrogen storage.
Effects of ultrasonic treatment on aqueous suspensions of diamond nanopowders
Authors:   V. Bakul Institute for Superhard Materials of National Academy of Sciences of Ukraine, Ilnytska G. D. , Loginova O. B. ,   V. Bakul Institute for Superhard Materials of National Academy of Sciences of Ukraine, Starik S. P. ,   V. Bakul Institute for Superhard Materials of National Academy of Sciences of Ukraine, Lisovenko S. O. ,   V. Bakul Institute for Superhard Materials of National Academy of Sciences of Ukraine, Bazaliy G. A. ,   V. Bakul Institute for Superhard Materials of National Academy of Sciences of Ukraine, Tsyba N. N. ,   Institute of Sorption and Problems of Endoecology of National Academy of Sciences of Ukraine
Published: May 2023

It has been found that ultrasonic treatment of diamond nanopowders contributes to surface cleaning due to the removal of non-diamond carbon and impurities from the surface boundary of nanodiamond grains (from 0.4 and 0.32 % for ASUD-99 and 0.67 and 0.55 % for ASUD 75, respectively). It does not affect the total sorption volume and the values of the specific surface of the studied samples do not change, but it changes the composition of groups on the surface of diamond nanoparticles, which affect its hydrophilicity. In the samples of АSUD-75 after ultrasonic treatment, a redistribution of the ratio of the intensities of valence vibrations of С=О bonds in the lactone (anhydride) group (1742 cm–1) and the quinone (carboxyl) group (1683 cm–1) is observed, which indicates the decay of the lactone ring and its transformation into carbonyl and carboxyl groups. All samples of АSUD-99 have a hydroxyl group O-H (3400 cm−1), which does not change significantly under the influence of ultrasound. This explains the noticeable change in agglomeration for ASUD-75 in contrast to ASUD 99.
Mechanical exfoliation of graphite to graphene in polyvinylpyrrolidone aqueous solution
Authors:   I. M. Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Myroniuk L. A. , Myroniuk D. V. ,   I. M. Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Maistruk E. V. ,   Yuriy Fedkovych Chernivtsi National University Ukraine, Kuryshchuk S. I. ,   Yuriy Fedkovych Chernivtsi National University Ukraine, Ievtushenko A. I. ,   I. M. Frantsevich Institute for Problems of Materials Science of National Academy of Sciences of Ukraine, Danylenko I. M. ,   V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, Strelchuk V. V. ,   V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, Koziarskyi I. P. ,   Yuriy Fedkovych Chernivtsi National University Ukraine
Published: May 2023

In presented work we have reported that polyvinylpyrrolidone (PVP) is suitable organic solvent for mechanical exfoliation of crystalline graphite to graphene in aqueous solution through kitchen blender technique. Morphological, structural and optical, properties of graphene samples were characterized by scanning electron microscopy, Raman scattering and UV-Visible spectroscopy. Scanning electron microscopy demonstrates folded morphology of graphene flakes with ~4 nm thickness. Raman scattering was revealed the high-quality graphene with low levels of defects after the exfoliation process of graphite/PVP dispersions. The G band at ~1582 cm−1 on Raman spectra is related with stretching vibrations of carbon atoms. The broadening of the G band is not observed, that indicated on absence of the basal plane defects in the graphene structure, which can be introduced during exfoliation by the kitchen blender. The ratio of the intensity of 2D and G bands equal to 1.66 (I2D/IG>1) and the value of 2D band full width at half maximum is 79.88 cm–1, indicated a few-layer graphene (FLG) structure. The defects quantity identified by the intensity ratio of the D and G bands, ID/IG is 0.18, significantly lower than that reported for graphene oxide with basal plane defects (> 1) and for sonication dispersed graphene (~ 0.6). The graphene dispersions were characterized by UV–Vis spectroscopy, minimum transmittance observed at around 270 nm is attributed to the π→π* transitions of aromatic C–C bonds in graphene. The optical transmittance minimum and the overall high transmittance decreasing values observed between 270 and 800 nm strongly suggest the presence of two-dimensional material in the dispersion, thus confirming the successful exfoliation of graphite to graphene by blending. We demonstrate the simple and nontoxic method to product high-quality FLG sheets, free from defects, using a kitchen blender and eco-friendly polyvinylpyrrolidone as an organic exfoliant.
Anodic aluminum oxide-membrane prepared in electrolyte “oxalic acid – matter with carbon nanodots”
Authors:   V.I. Vernadskyy Institute of General and Inorganic Chemistry of National Academy of Sciences of Ukraine, Kudelko K. O. , Rozhdestvenska L. M. ,   V.I. Vernadskyy Institute of General and Inorganic Chemistry of National Academy of Sciences of Ukraine, Ponomarova L. M. ,   Sumy State University Ukraine, Оgenko V. M. ,   V.I. Vernadskyy Institute of General and Inorganic Chemistry of National Academy of Sciences of Ukraine
Published: May 2023

Anodic porous alumina has been studied and used as nanoscale structure, coating, template in different applications. The porous anodic alumina oxide could be described as numerous hexagonal cells and looks like cellular structure. In this work we report about results of study anodizing of aluminum with usage of electrolyte: “oxalic acid electrolyte-matter with carbon nanodots”. It was received anodic aluminum oxide-membrane with aluminum supporting; calcination was used as post treatment. The aluminum substrate allows one to fix the membrane in the cells. Methods: processes of anodizing was provided in 0.3M oxalic acid with addition of colloid system of carbon nanodots, temperature of process was controlled at range of 10 degree Celsius, aluminum foil (anode) and platinum plate (cathode) were used; thickness of aluminum foil was 0.1 µm; morphology and structure of anodic aluminum oxide-membrane were determined with usage of electron scanning microscope; the contact angle between the surface of anodic aluminum oxide-membrane and deionized water was measured with “drop” methodology. Calcium content was monitored with a conductometer. The content of proteins was determined with photometry (micro Lowry’s method). It was found that contact angle of the surface of anodic aluminum oxide-membrane obtained in electrolyte “oxalic acid-matter with carbon nanodots” and deionized water is 38 degrees. Adding colloidal system of carbon nanodots to the acid electrolyte acts as a hydrophilizer, changes the size of the porous surface: as a result, it is possible to control the porosity of the films. Calcination of anodic aluminum oxide-membrane at 500 degree Celsius lead to expansion and thinning of pore walls. Anodic aluminum oxide-membrane was tested for dialysis process for milk whey separation. The membrane obtained in electrolyte: “oxalic acid-matter with carbon nanodots” showed a greater degree of rejection of protein particles in comparison with a similar membrane obtained in electrolyte of oxalic acid. The advantage of using carbon nanodots in acid electrolyte is the simplicity and environmental friendliness of the synthesis. The approach, which involves the addition of a colloidal system with carbon nanomaterial, allows one to avoid using a strongly acidic electrolyte for obtaining membranes with smaller pores. One of the ways for using of anodic oxide aluminum-membrane is the dialysis of biological fluids, for example, milk whey.
Chemical-physical features of the biochar-based oil-destructive sorbent
Authors:   Institute for Sorption and Problems of Endoecology of National Academy of Sciences of Ukraine, Khokhlov A. V.
Published: May 2023

The main task and relevance of this work are to develop the most effective sorbents for cleaning oil pollution or accidental oil spills. A generalized criterion for evaluating the effectiveness of a sorbent is the local availability and fast renewability of raw materials for biochar. The features of obtaining biochar from cellulose-containing plant raw materials of corn cobs are described. The effect was studied of the pyrolysis conditions of the selected plant material on the physicochemical properties of biochar, which are responsible for the intermolecular interaction of the sorbent with the adsorbed substance and for immobilization and viability of oil degrading bacteria, which indicates the possibility to control the properties of oil destructive sorbent at the production stage. The optimal mode of carbonization of such raw materials has been worked out to obtain a sorbent with porosity and chemical compatibility with oil-degrading bacteria. Cultural cultivation for immobilization of oil-degrading bacteria was carried out in a nutrient medium and a concentrate was prepared. It is shown that biochar with oil-oxidizing microorganisms fixed on its surface has significant sorption and destructive properties.
Az érzékeny kutatási adatok megosztása a személyre szabott orvoslás gyakorlatában
Authors: Molnár Viktor , Cs. Sági Judit , Molnár Mária Judit
Published: May 2023

Az egészségügyi és az orvosbiológiai kutatások adatainak széttagoltsága az
adatvezérelt döntéseken alapuló, személyre szabott orvoslás egyik akadálya. A
fejlődéshez a méretben és komplexitásban is rendkívüli, ám töredezett
egészségügyi adatkincs hatékony kiaknázását, illetve az intézményeken vagy akár
határokon is átívelő adatmegosztást biztosító technológiák szükségesek. A
biobankok nemcsak a minták archívumai, hanem adatintegrációs központok is
egyúttal. A biobankok adatainak együttműködésben történő elemzése értékesebb
következtetéseket ígér. Az adatok megosztásának előfeltétele a harmonizáció,
azaz a minták egyedi klinikai és molekuláris jellemzőinek egységes adatmodellben
és standard kódokkal történő leképezése. Az egészségügyben keletkezett
információk ezekben a közös sémára illesztett adatbázisokban válnak elérhetővé a
gépi tanulás számára, így a módszer az együttműködés során a személyes adatokat
tiszteletben tartó felhasználásra is lehetőséget ad. Az érzékeny egészségügyi
adatok újraértékelése elképzelhetetlen a személyes adatok védelme nélkül,
amelynek jogi és koncepcionális kereteit a GDPR- (General Data Protection
Regulation) és a FAIR- (findable, accessible, interoperable, reusable) elvek
jelölik ki. Az Európában működő biobankok számára a BBMRI-ERIC (Biobanking and
Biomolecular Research Infrastructure – European Research Infrastructure
Consortium) kutatási infrastruktúra fejleszt közös irányelveket, amelyhez hazánk
2021-ben mint Magyar BBMRI Csomópont csatlakozott. Első lépésben a biobankok
szövetségében kapcsolódhatnak össze a széttagolt adathalmok, ahol sokrétű
kutatási cél által motivált, igényesen összerendezett adatkészletek válnak
hozzáférhetővé. Ezt követően, a betegellátás valós környezetében keletkezett
adatok magasabb szinten történő értékelése is lehetővé válik, így a klinikai
vizsgálatok szigorú keretek között generált bizonyítékai új szintre kerülhetnek.
Közleményünkben a „federált” adatmegosztásban rejlő lehetőségeket mutatjuk be a
Semmelweis Egyetem biobankjainak közös projektje kapcsán. Orv Hetil. 2023;
164(21): 811–819.
A felfekvés (decubitus) ellátásának és megelőzésének szakmapolitikai megközelítése
Authors: Cseh Borbála , Kincses Gyula , Balogh Zoltán , Dózsa Csaba László
Published: May 2023

Bevezetés: A felfekvés (decubitus) a nyomásnak kitett helyeken
kialakuló seb a bőrön és a subcutisban. Elsősorban idős, nem mobilis egyénekben
fordul elő, melynek megelőzése és kezelése nemcsak orvosi és ápolói részvételt,
hanem anyagi ráfordítást is igényel. Célkitűzés:
Tanulmányunkban a dokumentumelemzést követően az állami kórházak körében 2022.
második negyedévében végzett decubitusfelmérés releváns eredményeit ismertetjük
a decubitusprevenció és -ellátás szervezeti és menedzsmenti tényezőire
fókuszálva. Módszer: Az országos felmérés a decubitusellátás
szempontjából releváns intézményi kört tekintve teljes körű volt, a beválogatási
kritériumok meghatározását követően 86 intézmény gyakorlatáról kaptunk képet a
2019. bázisévre vonatkozóan. Eredmények: A hazai és az európai
uniós szakmapolitikai dokumentumok, szabályozók és stratégiai dokumentumok
áttekintése és rendszerezése során megállapítható, hogy a felfekvés prevenciója
és ellátása több fejlesztéspolitikai célkitűzéshez illeszthető, előfordulási
gyakorisága az egészségügyi szektor minőségi indikátoraként jelenik meg.
Megbeszélés: Az általunk megtervezett és elvégzett országos
decubitusfelmérés eredményei alapján elmondható, hogy a hazai jógyakorlatok
szigetszerűen működnek, jelentési rendszerünk inhomogén, a dokumentáció nem
egységes az intézményrendszerünkben. A 86 intézményből 17 rendelkezik új keletű
(2021–2022), intézményi szintű decubitusellátást szabályozó dokumentummal,
melyek az intézmények 17%-ában 2010 vagy az előtti keltezésűek. A szabályozó
dokumentumok felülvizsgálati hatálya az intézmények 10%-ában elő van írva. A
vizsgált intézmények közül 61 intézmény (71%) működtet decubitusteamet, 55
intézmény (64%) használ profilaktikus kötszereket. Hiányoznak a szakmai
monitoringmutatók, minőségi indikátorok, esetlegesek az intézményi szintű
ráfordításelemzések, kontrolling jellegű visszamutatások, melyek a költség- és
költséghatékonysági elemzések alapját képezhetnék.
Következtetés: Több szervezeti és menedzsmenti intézkedést
érintő javaslatunk mellett a vonatkozó szakmai irányelv megújítását és az
egységes intézményi jelentési rendszer bevezetését is szorgalmazzuk. Orv Hetil.
2023; 164(21): 821–830.
A védőoltásokkal kapcsolatos ismeretek és attitűdök orvostanhallgatók körében a COVID–19-pandémia alatt
Authors: Paulik Edit , Molnár Regina , Zsiros Viktória , Máté Zsuzsanna , Maróti-Nagy Ágnes , Markó-Kucsera Mária , Sisák Anita , Mátó Veronika
Published: May 2023

Bevezetés: Magyarországon az életkorhoz kötött kötelező oltások
vonatkozásában közel 100%-os a lakosság átoltottsága. Az ajánlott oltások
esetében viszont már kevésbé kedvező a helyzet, ráadásul a COVID–19-pandémia
alatt a korábbinál nagyobb mértékben jelent meg az oltásellenesség is egyes
csoportokban, melynek visszaszorítása minden egészségügyi szakembernek feladata.
Célkitűzés: A védőoltásokkal kapcsolatos ismeretek és
attitűdök feltárása, valamint ezen tényezők nemek, évfolyamok és oltási
hajlandóság/bizonytalanság szerinti jellemzőinek elemzése a Szegedi
Tudományegyetem orvostanhallgatói körében. Módszer: A
keresztmetszeti vizsgálat a Szegedi Tudományegyetem I. és IV. évfolyamos
orvostanhallgatói körében történt online kérdőív segítségével, amely a
szociodemográfiai adatokon kívül vizsgálta az influenza és a COVID–19 elleni
oltás beadatását, a védőoltásokkal kapcsolatos tudás önértékelését, az oltások
fontosságáról, valamint az ajánlott oltásokról alkotott hallgatói véleményeket.
Eredmények: Az Egészségügyi Világszervezet stratégiai
munkacsoportjának meghatározása alapján a hallgatók 88,6%-a tartozott az „oltási
hajlandóság” csoportba, akik amint elérhetővé vált a COVID–19 elleni védőoltás,
azonnal beadatták azt, míg az „oltási bizonytalanság” csoportba soroltak (11,4%)
csak az oltás kötelezővé tételekor vagy még akkor sem kérték az oltást. A nem és
évfolyam szerint illesztett modell alapján az oltási hajlandóságot mutatók
nagyobb eséllyel tartották fontosnak a védőoltások alkalmazását, a tanácsadást
stb., mint a bizonytalanok, míg az ismeretek önminősítésével nem volt
összefüggés. Az ajánlott oltásokkal kapcsolatos állítások esélyhányadosai
alapján azonosítani lehetett az oltási hajlandósághoz, illetve bizonytalansághoz
társuló véleményeket. Megbeszélés: Összességében a hallgatói
ismeretek és attitűdök pozitív képet mutattak. Kiemelendő viszont, hogy az
oltási bizonytalanságot mutató hallgatóknál azonosított tévhitek megegyeznek a
lakosság körében is fellelhető oltásellenes eszmékkel.
Következtetés: Az egyetemi képzés során nagyobb hangsúlyt
kell kapnia a hallgatói oltási hajlandóság monitorozásának, az ismeretek és a
kommunikáció fejlesztésének. Orv Hetil. 2023; 164(21): 803–810.
A hímvessző epithelioid haemangiomája
Authors: Murányi Mihály , Chang Chie Yi-Che , Benyó Mátyás , Flaskó Tibor
Published: May 2023

Az epithelioid haemangioma egy jóindulatú éreredetű tumor. Komplett eltávolítás
esetén helyi kiújulásra nem kell számítani, áttétet nem képez. A hímvesszőben
különösen ritkán alakul ki, az angol nyelvű szakirodalomban mindössze 33 esetről
számoltak be. Közleményünkben egy 64 éves férfi esetét ismertetjük, akinél a
vena dorsalis penisben igazolódott epithelioid haemangioma. A hazai irodalomban
korábban nem számoltak be a hímvesszőben elhelyezkedő epithelioid
haemangiomáról. A beteg kivizsgálása egy, a hímvessző tövében lévő csomó miatt
indult, mely merevedés során fájdalmat okozott. Fizikális vizsgálata a hímvessző
dorsalis oldalán a középvonalban mobilis, nyomásérzékeny térfoglalást igazolt.
Ultrahangos vizsgálata a bőr és a tunica albuginea között elhelyezkedő, jól
körülhatárolt, homogén, színes Doppler-vizsgálattal keringést nem mutató 10
mm-es térfoglalást mutatott ki. Az elváltozást spinalis érzéstelenítésben
kimetszettük. A hímvessző dorsalis oldalán ejtett hosszanti metszés után a vena
dorsalis penist körbepreparáltuk, a makroszkóposan thrombusnak kinéző elváltozás
alatt és fölött a vénát lekötöttük, majd a tumort az érintett vénaszakasszal
együtt eltávolítottuk. A kórszövettani vizsgálat az eltávolított vénafalhoz
tapadó epithelioid haemangiomát mutatott ki ép sebészi széllel. A műtét után
három hónappal a fájdalmas merevedés megszűnt, a beteg Merevedés Minőségi
Mutatója 21 volt. Négyéves megfigyelés alatt kiújulás vagy áttét nem alakult ki.
A hímvessző epithelioid haemangiomájának kezeléséhez elengedhetetlen a penis
subcutan szöveteiben előforduló térfoglalások differenciáldiagnosztikájának
ismerete, ezért ezt részletesen ismertetjük. Orv Hetil. 2023; 164(21):
836–840.
Land gradient and configuration effects on yield, irrigation amount and irrigation water productivity in dry direct seeded rice and non-puddle transplanted rice in cauvery delta zone
Authors: Chelladurai K. , Yadav Sudhir
Published: May 2023

Field experiments were conducted in two different locations in the Cauvery delta zone - viz., old delta at Tamil Nadu Rice Research Institute (TRRI) Aduthurai, and new delta at Soil and Water Management Research Institute (SWMRI), Kattuthottam, Thanjavur.Laser levelling with 0% gradient significantly reduced irrigation amount and/or increased irrigation water productivity (WPi) in all crops/systems grown on the flat compared to farmer leveling practice. However, water advancement rate in farmer’s field generally very low because of flat configuration and or sub – optimal flow rate, resulting in high rates of drainage below root zone, more so at the head end of the field than tail end because of longer period of flooding of soil surface at the head end.It is hypothesized that formation of a uniform gradient from the head to tail end of the field increase the water advancement rate, reduce irrigation input and increase irrigation water productivity.Experiments were conducted during Kharif (Kuruvai) 2014, late Samba 2014 - 15 and Kharif (Kuruvai) 2015 at TRRI, Aduthurai and during early Kuruvai 2014, Samba 2014 - 15 and early Kuruvai 2015 at SWMRI, Kattuthottam, Thanjavur to evaluate the effect of land gradient on water and rice crop and water productivity. The experiments were laid out in Randomized Complete Block Design (RCBD) with three land slope treatments in which three observations are taken on each plots (16 m x 50 m) (at the head, middle and tail of the plot) and three replications (blocks) in dry direct seeded rice (DSR) and non – puddle machine transplanted rice (NPTR). The slopes studied are T1 - 0.0 per cent slope,T2 - 0.1 per cent slope (5 cm gradient in 50 m run) and T3 - 0.2 per cent slope (10 cm gradient in 50 m run) with precise leveling. Short duration (100 – 110 d) rice variety ADT (R) 45 was raised as a test variety in the field experiments conducted during early Kuruvai and Kuruvai seasons in both the experimental sites. For Samba / late Samba season, long duration (135 – 150 d) rice variety CR 1009 was used in both the experimental sites. With regard to different slope gradients, it was worked out as 2159 litres as water requirement to produce 1 kg of rice under 0.1 per cent slope as against 2566 litres in 0.0 per cent slope across the seasons which indicated a water saving of 407 litres (15.8%) of water per kg of rice at Aduthurai location, whereas it was 661 litres (20.7%) at Thanjavur experimental site. The results further suggested that the effect of land slope gradients was explicitly pronounced more in the sandy loamy soils as compared to clayey loamy soils.