bluuebunny/crossref_metadata_2025 huggingface dataset:
Digital circular ecosystems: A data governance approach
Authors: Piétron Dominik , Staab Philipp , Hofmann Florian
Published: March 2023

Strategic product data management fosters circular ecosystems that reduce carbon emissions and resource consumption. To this end, legal frameworks are needed to set standards for systematic product transparency and interoperable tracking of materials. Analyzing the EU’s Digital
Product Passport (DPP), we propose the creation of publicly coordinated product data platforms to complement DPPs.The growing research interest in digital product passports (DPP) and circular economy platforms portends an ecological economic transformation that will require improved strategic
product data governance. Using the literature, we explore the technical and policy frameworks required by data-based policy instruments for digital circular ecosystems (e.g., DPPs). We analyze five empirical product life cycle cases to better understand how the strategic governance of product-related
data can connect materials and product flows to shape new collaborative circular ecosystems. For this purpose, we provide new governance proposals for modifying European DPPs to enable the systematic tracking of materials.
Co-firing of coal and woody biomass under conditions of reburning technology with natural gas
Authors: Hodžić Nihad , Kadic Kenan
Published: March 2023

It is a continuous imperative to establish the most efficient process of conversion of primary energy from fuel through combustion, which also has the least possible harmful effect on the environment. In this time of expressed demands for decarbonisation, it also means the affirmation of the use of renewable fuels and the indispensable application of appropriate primary measures in the combustion furnace. At the same time, the efficiency of the combustion process depends on several factors, from the type and properties of the fuel to the ambient and technological settings for the process. In this regard, with the aim of determining the static characteristics of combustion, experimental laboratory research was carried out on the combustion of mixtures of brown coal with low heating value and a high ash content with waste woody biomass and different process conditions: temperature, staged combustion air supply (air staging) and in conditions of application of a third or additional fuel (natural gas, reburning technology). Applied experimental methods included the analysis of the combustion process on the basis of input (reactants) - output (products), including the analysis of the composition of flue gases, i.e. the determination of the emission of the key components of flue gases CO2, CO, NOx and SO2, as well as the analysis of the composition of slag, ash and deposits ash, i.e. assessment and evaluation of the behaviour of ash from fuel in that process. Based on the obtained research results, this paper shows the significant positive effects of the application of primary measures in the furnace - compared to conventional combustion: air staging - reduction of net CO2 emissions during co-firing with biomass and reduction of NOx emissions by up to 30%; reburning technology - additional reduction of CO2 and NOx emissions in proportion to the share of natural gas, e.g. at a combustion process temperature of 1350 °C and at a 10% energy share of natural gas during the co-firing of a mixture of brown coal and waste woody biomass, compared to the emission without the use of natural gas, a reduction of NOx emissions by 185 mg/mn3 or by almost 30% was recorded. It was concluded, at the same time, the application of these primary measures in the furnace does not negatively affect the behaviour of ash from the fuel in the given settings of the combustion process.
Modeling Wolbachia infection frequency in mosquito populations via a continuous periodic switching model
Authors: Shi Yantao , Zheng Bo
Published: March 2023

In this article, we develop a continuous periodic switching model depicting Wolbachia infection frequency dynamics in mosquito populations by releasing Wolbachia-infected mosquitoes, which is different from the discrete modeling efforts in the literature. We obtain sufficient conditions on the existence of a unique and exactly two periodic solutions and analyze the stability of each periodic solution, respectively. We also provide a brief discussion and several numerical examples to illustrate our theoretical results.
Prenatal hydrometrocolpos as an unusual finding in Fraser syndrome. Case report
Authors: Dávila Neri Isabella , Farias Vela Adriana Patricia , Aragón Mendoza Rafael Leonardo , Gallo Roa Roberto , Russo Vizcaino Giovanni Carlo
Published: March 2023

Objectives

Fraser syndrome is a rare congenital malformation characterized by cryptophthalmos, syndactyly and urogenital tract malformations. The association with hydrometrocolpos is infrequent, with only a few cases reported in the literature.

Case presentation

A 19-year-old primigravida presenting at 35 weeks of gestation, with prenatal finding of hydrometrocolpos associated with hypotelorism and microphthalmia. Pre-term cesarean delivery was performed due to breech labor and perinatal death. The autopsy confirmed hydrometrocolpos secondary to vaginal atresia and imperforate hymen, associated with cryptophthalmos, syndactyly, nasal and pinna malformations, confirming the diagnosis of Fraser syndrome.

Conclusions

Fraser syndrome is usually a postnatal diagnosis. The association with genital abnormalities explains the finding of hydrometrocolpos, which could be considered a diagnostic criterion for this syndrome.
Warum und wie Typoskripte analysieren?
Authors: Fink Kristina
Published: March 2023

After a look at the history of typewriter development and in particular at its significance for the poet’s mode of production, two fundamentally different ‘writing settings’ are distinguished with regard to the interplay of the triad ‘producer – instrument – product’, which depend on the question about whether the poet himself operates the typewriter. For both writing settings, various examples are given, and positions of writers are examined in more detail. Based on the particular challenges of typescript analysis, a systematic catalogue is developed that explains the different categories as well as their respective specific potential for insight. On the basis of three selected examples from the digital historical-critical edition of Arthur Schnitzler’s late works, these research methods are finally applied in concreto to illustrate their added value for the reconstruction of text genesis in typescripts.
Measuring spatiotemporal accessibility to healthcare with multimodal transport modes in the dynamic traffic environment
Authors: Zhou Xinxin , Yuan LinWang , Wu Changbin , Yu Zhaoyuan , Lei Wang
Published: March 2023

Research on healthcare accessibility is developing with a focus on multimodal transport modes (MTMs) and multiple time-series variations. A dynamic traffic environment leads travelers to make distinct decisions at different time slots, which impacts spatiotemporal accessibility markedly. Our article proposes a methodological framework to measure spatiotemporal accessibility with multimodal transportation modes and its variation at multiple time series, while accounting for traffic congestion and the probability of residential transport mode choices in a dynamic traffic environment. We selected Nanjing, China, as the study area and pediatric clinic services (PCS) as specific healthcare services to estimate the spatiotemporal accessibility at four representative time slots. The results indicate that the weight estimation of travel time based on MTMs is more propitious than the travel time of single-mode to present real-world travel characteristics and reflects the spatiotemporal distribution and variation of services synthetically. Furthermore, the spatiotemporal accessibility variation of PCS in peripheral suburbs is more pronounced than that in urban centers and rural areas. This work holds pragmatic implications for policymakers in terms of services planning and allocation optimization to improve the equity of resource supply.
A Truly Cosmopolitan Philosopher: Images of Kant in Belo Horizonte
Authors: Kauark-Leite Patrícia
Published: March 2023

In this essay, I provide a reconstruction of the history of and surrounding the bust of Kant, together with its plaque, which jointly compose the monument created in honor of the sage of Königsberg at the Faculty of Philosophy and Human Sciences (FAFICH) of the Federal University of Minas Gerais (UFMG) in Belo Horizonte, Brazil. In so doing, I have the following aims: first, to examine the relationship between the monument and the ideas that guided the creation of the Faculty of Philosophy of Minas Gerais by one of its founders, Prof. Arthur Versiani Velloso; second, to highlight and register the authorship of this work by the plastic artist Frederico Bracher Júnior, as an important part of Kant’s international and indeed truly cosmopolitan iconography.
A symbolic approach to multiple Hurwitz zeta values at non-positive integers
Authors: Sadaoui Boualem , Jarad Fahd , Adjabi Yacine , Türkan Erkan Murat
Published: March 2023

In this article, we give another method to calculate the values of multiple Hurwitz zeta function at non-positive integers by means ofRaabe’s formula and theBernoullinumbers and we simplify these values by symbolic computation techniques.
Advances and applications on non-Hermitian topological photonics
Authors: Yan Qiuchen , Zhao Boheng , Zhou Rong , Ma Rui , Lyu Qinghong , Chu Saisai , Hu Xiaoyong , Gong Qihuang
Published: March 2023

Non-Hermitian photonics and topological photonics, as new research fields in optics, have attracted much attention in recent years, accompanying by a great deal of new physical concepts and novel effects emerging. The two fields are gradually crossed during the development process and the non-Hermitian topological photonics was born. Non-Hermitian topological photonics not only constantly produces various novel physical effects, but also shows great potential in optical device applications. It becomes an important part of the modern physics and optics, penetrating into different research fields. On one hand, photonics system can introduce artificially-constructed gain and loss to study non-Hermitian physics. Photonics platform is an important methods and ways to verify novel physical phenomena and promote the development of non-Hermitian physics. On the other hand, the non-Hermitian topological photonics provides a new dimension for manipulating topological states. Active and dissipate materials are common in photonic systems; therefore, by using light pump and dissipation of photonic systems, it is expected to promote further development of topological photonics in device applications. In this review article, we focus on the recent advances and applications on non-Hermitian topological photonics, including the non-Hermitian topological phase transition and skin effect, as well as the applications emerging prosperously in reconfigurable, nonlinear and quantum optical systems. The possible future research directions of non-Hermitian topological photonics are also discussed at the end. Non-Hermitian topological photonics can have great potential in technological revolution and have the capacity of leading the development of both physics and technology industry.
Religiosität im digitalen Wandel
Authors: Aslan Ednan , Yildiz Erol
Published: March 2023

Diese qualitative Studie untersuchte den Einfluss von digitalen Kommunikations- und Interaktionsformen auf die religiösen Orientierungen muslimischer Jugendlicher in Österreich. Die Analyse zahlreicher qualitativer Interviews zeigt, dass religiöse Orientierungen eng mit sozialen Medien verwoben sind und dass mediale Islambilder einen proportionalen Einfluss auf religiöse Orientierungen haben. Die Studie belegt auch, dass von einer komplexen Wechselwirkung ausgegangen werden muss.

Die Ergebnisse bieten neue Perspektiven für die Erforschung religiöser Orientierungen muslimischer Jugendlicher im Zeitalter digitaler Medien, regen zur kritischen Reflexion herkömmlicher Islambilder an und können für ExpertInnen und PraktikerInnen von Bedeutung sein.
Characterizing the Aging and Performance of Asphalt Binder Blends Containing Recycled Materials
Authors: Rahman Mohammad Ashiqur , Harvey John T. , Elkashef Mohamed , Jiao Liya , Jones David
Published: March 2023

The aging of asphalt concrete is mainly governed by the aging of the asphalt binder, which is a naturally occurring organic hydrocarbon. Both chemical and rheological properties of asphalt binder are expected to change as aging continues. The pavement industry is increasing the use of different recycled materials in the construction and rehabilitation of flexible pavements to preserve natural resources, save costs, and reduce environmental emissions. The aged binder from recycled materials is expected to alter the binder properties and its aging characteristics in the new mix. In this study, 3 different virgin base binder types (PG 64-16, PG 58-22, and PG 70-10) and 7 different binder blends containing recycled binders (up to 100 % binder replacement) were subjected to different aging conditions. The rheological and chemical properties of these binders were characterized using a dynamic shear rheometer and Fourier transform infrared spectroscopy, respectively. It was found that the Glover-Rowe parameter distinctively captured the change in binder rheological properties with aging for the different binder blends. A good correlation (R2 value of 0.83–1.00) was observed between binder chemical and rheological properties. The source and performance grade of the base binder were found to govern the correlation between the rheological and chemical properties of the blended binder. Hamburg wheel tracking (for rutting and moisture sensitivity) and indirect tensile asphalt cracking test (for fracture) tests were conducted on asphalt mixes maintaining the same blended binder ratios. The laboratory mix performance parameters were found to correlate well with the properties of the blended binders. Therefore, properties of the blended binders can be an important source of information for predicting the performance of asphalt mixes containing recycled materials.
Angular Gyrus Responses Show Joint Statistical Dependence with Brain Regions Selective for Different Categories
Authors: Fang Mengting , Aglinskas Aidas , Li Yichen , Anzellotti Stefano
Published: March 2023

Category selectivity is a fundamental principle of organization of perceptual brain regions. Human occipitotemporal cortex is subdivided into areas that respond preferentially to faces, bodies, artifacts, and scenes. However, observers need to combine information about objects from different categories to form a coherent understanding of the world. How is this multicategory information encoded in the brain? Studying the multivariate interactions between brain regions of male and female human subjects with fMRI and artificial neural networks, we found that the angular gyrus shows joint statistical dependence with multiple category-selective regions. Adjacent regions show effects for the combination of scenes and each other category, suggesting that scenes provide a context to combine information about the world. Additional analyses revealed a cortical map of areas that encode information across different subsets of categories, indicating that multicategory information is not encoded in a single centralized location, but in multiple distinct brain regions.

SIGNIFICANCE STATEMENTMany cognitive tasks require combining information about entities from different categories. However, visual information about different categorical objects is processed by separate, specialized brain regions. How is the joint representation from multiple category-selective regions implemented in the brain? Using fMRI movie data and state-of-the-art multivariate statistical dependence based on artificial neural networks, we identified the angular gyrus encoding responses across face-, body-, artifact-, and scene-selective regions. Further, we showed a cortical map of areas that encode information across different subsets of categories. These findings suggest that multicategory information is not encoded in a single centralized location, but at multiple cortical sites which might contribute to distinct cognitive functions, offering insights to understand integration in a variety of domains.
THEORETICAL SIMULATION OF THE EFFECT OF TEMPERATURE OF MULTI-JUNCTION SOLAR CELLS (PIN/ InGaN)
Authors:   Laboratory Smart Grid and Renewable Energy, University Tahri Mohammed Béchar, Algeria, MOUSLI L. , DENNAI B. ,   Laboratory of Renewable Energy development and their applications in the Saharan areas University Tahri Mohammed, Béchar, Algeria, AZEDDINE B. ,   Laboratory of Physics and Semiconductors devises, University Tahri Mohammed, Béchar, Algeria
Published: March 2023

In this study, we performed a numerical theoretical simulation of single-junction and dualjunction solar cells based on InGaN. This simulation calculates the electrical parameters, characteristics of each of the studied cells, such as absorption, open-circuit voltage (Vco), collection efficiency, short circuit density (Jsc), and form factor FF. We have optimized the cells top PIN (In0.62Ga0.38N) and bottom PIN (In0.81Ga0.19N), and a dual-junction cell. The conversation efficiency of the single junction PIN cells exceeds 23%, while it is 38% for the dual-junction cell. The temperature dependencies of single junction and dual-junction solar cells have been studied at temperatures ranging from 300˚K to 450˚K. The variation of the electrical parameters of each cell was simulated with increasing temperature and the simulation result was detailed in this study. This study was done under standard conditions (AM1.5, 1000mW/cm2 ) and the simulation was performed on an ANOC calculation code (the latter is available as an application on android devices).
FLOW CONTROL OF HYDROGEN FUEL IN PEM FUEL CELL USING SOFT COMPUTING TECHNIQUES
Authors:   Department of Electrical and Computer Engineering, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan, QAISER M. , ASGHAR A. B. ,   Department of Electrical and Computer Engineering, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan, JAFFERY M. H. ,   Department of Electrical and Computer Engineering, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan, JAVAID M. Y. ,   Department of Electrical and Computer Engineering, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan, KHURRAM M. S. ,   Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
Published: March 2023

Fuel cells transform the chemical energy of hydrogen directly into electrical energy without ignition or thermal processes. Their behavior is defined based on electrochemistry and thermodynamics that involves complex computations in their mathematical model. This problem of modeling can be resolved by using soft computing techniques. Fuel cells are effective, versatile and silent devices that can provide power to many applications¸ from portable electronic devices to automobiles, to electrical grids across the nation. Due to the nonlinear process of a fuel cell, fuzzy logic, neural network, and Neurofuzzy controllers are suitable for regulating input gasses flow rate to get appropriate electrical power according to load demand. This paper describes aMATLAB / Simulink model of 1KW, 28.8V DC power PEM fuel cell for controlling hydrogen flow rate to the fuel cell stack using fuzzy logic, neural network, and Neuro-fuzzy controllers. The output performance of controllers is compared based on their efficiency and utilization. Simulation results showed that the Neuro-Fuzzy controller provides good performance for the purging process of hydrogen
EVALUATING THE STRUCTURAL, MORPHOLOGICAL AND OPTICAL PROPERTIES OF PURE AND COBALT DOPED BISMUTH VANADATE NANOPOWDER BY CHEMICAL PRECIPITATION METHOD
Authors:   Department of Energy Studies, Periyar university, Salem – 636 011, Tamilnadu, India, KARTHI N. , RAMESHKUMAR K. A. ,   Department of Energy Studies, Periyar university, Salem – 636 011, Tamilnadu, India, MAADESWARAN P. ,   Department of Energy Studies, Periyar university, Salem – 636 011, Tamilnadu, India
Published: March 2023

Pure BiVO4, Cobalt doped BiVO4 nanoparticles prepared by Co-precipitation method and assessed for their structural, morphological and optical properties. The synthesized Pure BiVO4 and Co-BiVO4 nanoparticles were characterized by using XRD,FTIR, UV-DRS, SEM,EDS and Photoluminescence spectra (PL). XRD pattern shows the purity of prepared Pure BiVO4 and Co-BiVO4 nanoparticles size range of 5.6-22.3 nm and exhibit orthorhombic crystalline phase. Scanning Electron Microscopy (SEM) shows some clusters with tiny particles which revealed remarkable change in morphology of the prepared samples. The functional groups confirmation and chemical bonding confirmation was performed by FTIR and UV-DRS analysis. The estimated optical band gap to be 2.842 eV- 2.538 eV. The imperfection conditions were exposed from the Ultraviolet and visible emissions of the PL spectra.
The effect of high-k passivation layer on off-state breakdown voltage of AlGaAs/InGaAs HEMT
Authors:   Henan Provincial Key Laboratory of Smart Lighting,School of Information Engineering, Huanghuai University, Zhumadian 463000, China, Sun S. X. , Zhong Y. H. ,   School of Physics and Microelectronics , Zhengzhou University, Zhengzhou 450001, China, Mei H. Y. ,   Henan Provincial Key Laboratory of Smart Lighting,School of Information Engineering, Huanghuai University, Zhumadian 463000, China, Yao R. X. ,   Henan Provincial Key Laboratory of Smart Lighting,School of Information Engineering, Huanghuai University, Zhumadian 463000, China, Chen F. J. ,   Henan Provincial Key Laboratory of Smart Lighting,School of Information Engineering, Huanghuai University, Zhumadian 463000, China, Li Y. X. ,   School of Physics and Microelectronics , Zhengzhou University, Zhengzhou 450001, China, Hu Y. F. ,   Microelectronics Institute, Xidian University, Xi’an 710071, China
Published: March 2023

In this paper, the effects of different relative permittivity (εr) of the passivation layer on off-state breakdown voltage of AlGaAs/InGaAs HEMTs are analyzed by ISE-TCAD. It is shown that as εr value increases, the off-state breakdown voltage increases. When the εr value increased to 80, the off-state breakdown voltage increased from 17.23V to 24.13V by 40.9%. This is because the peak value of electric field at the proximity of gate edge is reduced with the increase of εr value and it can lead to the improvement of the off-state breakdown voltage of device. Meanwhile, the electric field peak value near the drain edge increases with the increase of the εr value, leading to an increase in the ionization probability of electron-hole ionization under the the grid-drain area. In addition, the results also show that the channel current (IDS) and transconductance (gm) of the device are slightly reduced by the passivation layer with a high εr value, while the specific channel on-resistance is hardly degraded. Therefore, the passivation layer with a high εr value can effectively improve the breakdown voltage of the device without sacrificing the DC characteristics of the device.
Preparation and luminescence properties of SrWO4 phosphors with Ce3+ doping
Authors:   School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, China, Fu H. Y. , Guo Y. K. ,   School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, China, Li Y ,   Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin, China, Zhuang Y. L. ,   School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, China, Fu H. T. ,   School of Materials Science and Engineering, Chang'an University, Xi'an, China, Li X. J. ,   School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, China, Jin L. G. ,   School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, China
Published: March 2023

Efficient UV excitable Ce3+ ion activated SrWO4 phosphors, which were successfully prepared through a hydrothermal method. X-ray diffraction, field-emission scanning electron microscopy, CIE color coordinates and photoluminescence were used to characterize the samples. The effect of adding pH solution on the luminescent properties of SrWO4: Ce3+ was studied, the luminescence material SrWO4:Ce3+ exhibits intense blue photoluminescence (PL) with the maximum peak located at 306 nm, which is ascribed to the 4f→5d transition of Ce3+, All these results indicate that the SrWO4: Ce3+ phosphor holds tremendous potential for practical applications in and display with high performance LEDs.
Effect of KOH concentration and growth of platinum nanoparticles on current collector to improved performance of supercapacitor cells
Authors:   Department of Physics, Faculty of Mathematics and Natural Sciences, University of Riau, 28293 Simpang Baru, Riau, Indonesia, Farma R. , Hasibuan R. R. ,   Department of Physics, Faculty of Mathematics and Natural Sciences, University of Riau, 28293 Simpang Baru, Riau, Indonesia, Awitdrus A. ,   Department of Physics, Faculty of Mathematics and Natural Sciences, University of Riau, 28293 Simpang Baru, Riau, Indonesia, Hamzah Y. ,   Department of Physics, Faculty of Mathematics and Natural Sciences, University of Riau, 28293 Simpang Baru, Riau, Indonesia, Taer E. ,   Department of Physics, Faculty of Mathematics and Natural Sciences, University of Riau, 28293 Simpang Baru, Riau, Indonesia, Apriwandi A. ,   Department of Physics, Faculty of Mathematics and Natural Sciences, University of Riau, 28293 Simpang Baru, Riau, Indonesia
Published: March 2023

This research aims to determine the effect of KOH concentration on the electrochemical properties of activated carbon from raw fibers of oil palm empty fruit bunches (OPEFB) and the effect of platinum nanoparticles growth of stainless steel on a current collector electrode supercapacitor. Furthermore, varying KOH concentrations of 0.3, 0.6, and 0.9 M were used to conduct that the chemical and physical activation processes using N2 and CO2 gas at 600°C and 700°C, respectively. Furthermore, platinum nanoparticles were grown on the surface stainless steel current electrode by using a simple wet chemical method to improve the performance of supercapacitors Therefore, to achieve, KOH concentration on the morphology, adsorption, and electrochemical properties of the obtained electrode were investigated. Furthermore, many spherical platinum shapes ranging from 20 to 100 nm were observed through FESEM, while the high specific surface area of the carbon electrodes was confirmed by using the N2 adsorption-desorption isotherm at 77K. In addition, the surface areas of both carbon electrodes were measured at 395 and 373 m2 g -1 for KOH concentration using 0.9 M and 0.6 M, respectively. The results showed that the cyclic voltammetry (CV) of the modified supercapacitor electrode with platinum nanoparticles increased the specific capacitance with the highest value at 149.63 F g-1 .
Investigation on physical properties of Ni0.6Zn0.4Fe2O4 ferrite nanoparticles
Authors:   Department of Physics, Malla Reddy Engineering College (Autonomous), Secunderabad, T.S.- 500100, India, Kumar P. S. , Sivasankara Yadav G.  K. ,   Department of physics, Rayalaseema University, Kurnool, A.P, India, Vamsi Krishna V. K. ,   Department of Physics, Malla Reddy Engineering College (Autonomous), Secunderabad, T.S.- 500100, India, Thirupathi A. ,   Department of Physics, Malla Reddy Engineering College (Autonomous), Secunderabad, T.S.- 500100, India, Yamuna P. ,   Department of Physics, Malla Reddy Engineering College (Autonomous), Secunderabad, T.S.- 500100, India
Published: March 2023

The nano Ni0.6Zn0.4Fe2O4 ferrite nanoparticles have been synthesized by using sol-gel auto combustion method using citric acid as fuel agent calcined at different temperatures (4000C, 5000C and 6000C). The structural, dielectric and magnetic properties were examined by using X-ray diffraction (XRD), Field emission scanning electron microscope (FESEM), FTIR spectra, LCR meter and vibrating sample magnetometer (VSM). The single-phase cubic spinel structure of all samples confirmed from X-ray diffraction analysis. Surface morphology studies reveal that the grains are clear with well-defined grain boundaries and also found that the average grain size is maximum at 6000C calcination temperature. FTIR spectra confirm the phase of material at frequency bands(557 to 577 cm-1 ). The highest saturation magnetization was found at a calcination temperature 6000C with value 80.39 emu/g, and the value coercive field (Hc ) was inverse with the crystallite size.
Synthesis and characterization of Fe:MgZnO/AC as a prospective high photocatalytic material
Authors:   Siirt University, Institute of Science and Technology, Siirt, 56100, Turkey, Çevik M. S. , Horoz S. ,   Siirt University, Faculty of Engineering, Department of Electrical and Electronics Engineering, Siirt, Turkey, 56100, Baytar O. ,   Siirt University, Faculty of Engineering, Department of Chemical Engineering, Siirt, Turkey, 56100, Şahin Ö. ,   Siirt University, Faculty of Engineering, Department of Chemical Engineering, Siirt, Turkey, 56100, Ekinci A. ,   Department of Occupational Health and Safety, Siirt School of Health, Siirt University, Siirt, Turkey, 56100
Published: March 2023

The motivation of our current study is to carry out photocatalytic degradation experiments of methylene blue in the presence of Fe doped MgZnO/AC (Fe:MgZnO/AC) and MgZnO/AC catalysts and thus to examine the effect of the Fe-dopant metal on the photocatalytic activity of the catalysts. In this context, both catalysts (MgZnO/AC and Fe:MgZnO/AC) are synthesized by hydrothermal technique. Structural (XRD analysis) and optical (UV-Vis) properties of the synthesized catalysts are discussed. How the Fedopant metal affects the crystallite size and energy band gap of the MgZnO/AC catalyst is examined and the experimental data obtained are interpreted.
Comparative study in use sodium silicate instead of NH4OH as an alkaline basic catalyst to gelation unmodified silica aerogel based on tetraethoxysilane (TEOS)
Authors:   Physics Department, College of Science, University of Baghdad, Iraq, Al-Mothafer Z. H. A. , Abdulmajeed I. M. ,   Physics Department, College of Science, University of Baghdad, Iraq
Published: March 2023

In the present work, nonporous hydrophilic unmodified silica aerogel was synthesized successfully by ambient drying with one step base catalyst by used silica organic initiator tetraethoxysilane (TEOS). Silica aerogel was prepared twice by sol-gel technique; the first one was the gelation that happened under the alkaline catalyst NH4OH, which has a toxic property and dangerous to human health. The second gelation under the effect of the safety inorganic base catalyst sodium silicate (water glass) that used as an inorganic low-cost and environmentally friendly initiator to silica, plays a role in increasing pH as a catalyst and as a new rare co-precursor mixing organic and inorganic silica precursors (TEOS+Na2SiO3). The impurities accompanying water glass and sodium residue were eliminated by a lot of washing. The volume ratio of the (TEOS: ethanol: H2O: base catalyst) fixed respectively at (5.6:50:10:0,01M). The gelation reaction time, the gel properties, it's quality and the amount of the reactant, the density, and the appearance all effect by the type of catalyst used. The comparative study of silica porous aerogel production properties diagnostic achieved by FTIR, XRF, BET, BJH, FESEM and thermal conductivity applied as insulation materials .
Synthesis and characterization of carbon nanotubes incorporated with MgO nanoparticles
Authors:   Physics Department, College of Science, Sudan University of Science and Technology, Khartoum 11113, Sudan, Ali M. E. , Alfaki A. A. ,   Physics Department, College of Science, Sudan University of Science and Technology, Khartoum 11113, Sudan, Mohammed A. S. ,   Physics Department, Faculty of Science, Al-Neenlen University, Khartoum, Sudan, Abuelhassan H. H. ,   Physics Department, Faculty of Science, Al-Neenlen University, Khartoum, Sudan, Qurtam A. A. ,   Department of Biology, College of Sciences, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia, Haroun Kh. M. ,   Physics Department, Faculty of Education, Al-Zaiem Al-Azhari University, Omdurman, Sudan, Eisa M. H. ,   Physics Department, College of Science, Sudan University of Science and Technology, Khartoum 11113, Sudan
Published: March 2023

For the replacement of industrial materials that are scarce and very expensive, new alternative substances were produced by synthesizing nano materials. Chemical vapor deposition (CVD) method was used to synthesize two types of carbon nanotubes (CNTs) from soot carbon nanotubes [soot CNTs] and coal carbon nanotubes [coal CNTs] in this study. The soot and coal CNTs samples were incorporated with molar concentrations *0.1, 0.3, 0.5, 0.7 and 0.9) of MgO. Fourier Transform Infra-Red Spectroscopy (FTIR) and Xray Diffraction (XRD) were used to characterize the soot (MgO) and coal (MgO) CNTs samples. CNTs were formed successfully, according to the results of the FT-IR technique. The results of the XRD of the d-spacing, crystals size and density of the magnesium oxide (MgO) integrated into (soot and coal CNTs) or [soot (MgO) and coal (MgO)] CNTs samples were calculated. The impact of the ratios of MgO on CNTs samples’ structural properties was calculated. The phases of MgO and its crystalline structure are shown by the XRD method. The study method and results are analyzed in detail.
Gadolinium-doped Cu-In-Zn-S quantum dots: one-pot aqueous synthesis and multimodal bioimaging
Authors:   College of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, China, Zhang L. , Wan Y. ,   College of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, China, Xue J. ,   College of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, China, Duan W. ,   College of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, China, Chen D. ,   College of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, China, Wu Y. ,   College of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, China, Wang J. ,   College of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, China, Xu D. ,   College of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, China, Liu D. ,   Communication and Electronic Engineering Institute, Qiqihar University, Qiqihar, Heilongjiang 161006, China
Published: March 2023

We report a one-pot method to directly synthesize magnetic resonance/fluorescence multimodal imaging gadolinium-doped Cu-In-Zn-S quantum dots(GCIZS QDs) in aqueous media by using bio-compatible glutathione (GSH) as capping ligand and stabilizer. The optical features and structure of the GCIZS QDs have been characterized by UV-vis and fluorescence spectroscopy, XRD, TEM, and FT-IR. As a result, The GCIZS QDs possessed a strong fluorescence and r1 value of 4.015 mM-1 s -1 at the Cu/Gd ratio of 1/2. Furthermore, the GCIZS QDs were good water solubility and less cytotoxic up to 250 μg/mL in HUVEC cells. The red emission GCIZS QDs from the MDA-MB-231cells was clearly observed under microscope. It indicated that the GCIZS QDs present great potential as magnetic resonance /fluorescence multimodal imaging contrast agents for biological labels.
Facile synthesis of heterostructure CeO2/CdS and CdS/CeO2 nanocomposites for photocatalytic application of methylene blue textile dye
Authors:   Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai 600119, Tamil Nadu, India, Murugadoss G. , Kumar M. R. ,   Institute of Natural Science and Mathematics, Ural Federal University, Yekaterinburg 620002, Russia, Kathalingam A. ,   Millimeter-wave Innovation Technology Research Center, Dongguk UniversitySeoul, Seoul 04620, Republic of Korea, Rajabathar J. R. ,   Department of chemistry, College of science, King Saud University, PO Box 2455, Riyadh 11451, Kingdom of Saudi Arabia, Al-Lohedan H. ,   Department of chemistry, College of science, King Saud University, PO Box 2455, Riyadh 11451, Kingdom of Saudi Arabia, Al-Dhayan D. M. ,   Department of chemistry, College of science, King Saud University, PO Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
Published: March 2023

Heterostructure CeO2/CdS and CdS/CeO2 nanocomposites were synthesized by a facile ‘one-pot’ chemical method in ambient atmosphere and examined photocatalytic activity. The as-prepared nanocomposites were characterized using XRD, SEM, TEM, UV-vis, PL and TG-DTA. The obtained results reveal successful formation of CeO2/CdS and CdS/CeO2 nanocomposites. The TEM images show that well-dispersed particles were uniform and fairly small, mainly spherical-like shape. Enhanced photocatalytic degradation efficiency was observed for CdS/CeO2 composite exhibits 86%. This result suggested that the CdS/CeO2 composite significantly improve the photocatalytic efficiency due to reduction the recombination of photogenerated electron–hole pairs and creation of efficient free radicals. This work could provide a novel approach to construct new heterojunction photocatalysts and a deeper insight for the treatment of textile wastewater.
Pathogenic fungi neutralize plant‐derived ROS via Srpk1 deacetylation
Authors: Zhang Ning , Lv Fangjiao , Qiu Fahui , Han Dehai , Xu Yang , Liang Wenxing
Published: March 2023

In response to infection, plants can induce the production of reactive oxygen species (ROS) to restrict pathogen invasion. In turn, adapted pathogens have evolved a counteracting mechanism of enzymatic ROS detoxification, but how it is activated remains elusive. Here, we show that in the tomato vascular wilt pathogen Fusarium oxysporum f. sp. lycopersici (Fol) this process is initiated by deacetylation of the FolSrpk1 kinase. Upon ROS exposure, Fol decreases FolSrpk1 acetylation on the K304 residue by altering the expression of the acetylation‐controlling enzymes. Deacetylated FolSrpk1 disassociates from the cytoplasmic FolAha1 protein, thus enabling its nuclear translocation. Increased accumulation of FolSrpk1 in the nucleus allows for hyperphosphorylation of its phosphorylation target FolSr1 that subsequently enhances transcription of different types of antioxidant enzymes. Secretion of these enzymes removes plant‐produced H2O2, and enables successful Fol invasion. Deacetylation of FolSrpk1 homologs has a similar function in Botrytis cinerea and likely other fungal pathogens. These findings reveal a conserved mechanism for initiation of ROS detoxification upon plant fungal infection.
Smart Transformative Services to Defuse Crises?
Authors: Heimann Kira Marie , Bilstein Nicola , Haurand Michelle Désirée
Published: March 2023

Smart transformative services such as digital contact tracing apps are a means to offer transformative and economic value by selfmonitoring contacts and improving the well-being of users, while also reducing concerns when using services during pandemics such as COVID-19. In this study, we identify significant factors as well as communication and promotion strategies to encourage digital contact tracing app nonusers to use such apps in order to benefit from their value-creating potential. This research contributes to transformative service literature by identifying digital contact tracing apps as a means to regain confidence in using services during a pandemic, thereby offering transformative and economic value. By integrating two trust dimensions as meaningful mediators, this research sheds light on the conditions under which social influence and Internet privacy concerns influence nonusers’ usage intention. Moreover, the results not only identify significant factors influencing intended app usage but also reveal strategies for increasing actual app usage.
The influence of CO2 laser beam power output and scanning speed on surface roughness and colour changes of beech (Fagus sylvatica)
Authors: Gurau Lidia , Petru Adrian , Varodi Anca , Timar Maria Cristina
Published: March 2023

The literature provides very little information about engraving or decorating wood using a laser beam. No study was found that considers the surface roughness of wood after such treatments. This paper therefore aimed to find the influence of varying the laser power output and scanning speed of a CO2 laser beam on the surface roughness and colour of beech wood (Fagus sylvatica) for aesthetic applications such as decorative drawing. Laser power outputs from 5.6 to 6.8 W were tested in combination with scanning speeds from 100 to 500 mm/s. The surface roughness was assessed with a robust filter and by following measuring and evaluation recommendations from previous research to reduce the bias from the wood anatomy. The surface roughness measured by a series of roughness parameters (Ra, Rq, Rt, Rk, Rpk, Rvk) and total colour difference DE increased with laser power and decreased with scanning speed. A good correlation was found between surface roughness and wood colour change. Such correlations can be useful for selecting the laser power-scanning speed combinations capable of giving the chosen colour change at a minimum surface roughness.
Frederik H. Bissinger (2021). Family Language Policies and Immigrant Language Maintenance. Lithuanian in Sweden. Stockholm Studies in Baltic Languages 13. Stockholm: Stockholm University. PhD Thesis.
Authors: Verschik Anna
Published: March 2023

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Small mammals in natural and agricultural lands of Slobozhanshchyna (eastern Ukraine): results of a five-year-long survey
Authors:   V. N. Karazin National University of Kharkiv (Kharkiv, Ukraine), Markovska Oksana
Published: March 2023

The study of the species composition, biological and ecological features of small mammals was carried out for five years (2018–2022) in the surroundings of the village of Rozsohuvata (Kharkiv Oblast, Ukraine). During the study period, nine species of mouse-like rodents and three species of insectivorans were detected. The re-search area is represented by a ravine-beam system, agrocoenoses, field-protecting forest strips, riparian vege-tation around artificial reservoirs and streams, dry meadows, and pastures. Trappings of small mammals were carried out on thirty lines of traps. During the entire period of trapping, the dominant species was Sylvaemus uralensis and in some seasons Sylvaemus sylvaticus dominated. Starting from 2018, the relative abundance increased in autumn, reached a peak in 2020 and declined in the following years. In general, 2019 was the year of maximum abundance and most species were recorded in the summer of this year. The greatest number of species was found in the ecotone between riparian vegetation and field (10 species), as well as in the area of the multi-grass steppe in the beam (8 species). The eurytopic species include Sylvaemus uralensis and Syl-vaemus sylvaticus, whereas the stenotopic species is Mus spicilegus. According to the obtained abundance scores, only one species—Myodes glareolus—occurs randomly, whereas the rare species here are Mus spicile-gus, Sorex minutus, and Crocidura suaveolens. Six species are non-abundant: Apodemus agrarius, Sylvaemus tauricus, Mus musculus, Microtus levis, Cricetulus migratorius, and Sorex araneus. Only Sylvaemus sylvaticus belongs to common species, and only Sylvaemus uralensis is abundant. It should be mentioned that Cri-cetulus migratorius, which usually belongs to the category of random or rare species, turned out to be non-abundant in the study region, and it was recorded regularly in almost half of the studied biotopes. Myodes glareolus, which usually prefers oak forest, was extremely rare. The abundance of Apodemus agrarius, which usually belongs to common species in river valleys, was also low. Sylvaemus showed greater ecological valence, dominated in abundance and inhabited most biotopes, except for Sylvaemus tauricus, which began to occur only in the last two years and mainly in forest strips.
The benefits of intermittent fasting: A review of possible mechanisms on central neurological disorders
Authors: Chen W.W. , Wang L. , Zhou A.J. , Fan C. , Zhang Y.D. , Wang Z.P. , Rong S. , Wang T.
Published: March 2023

Intermittent fasting (IF) is a dietary strategy that involves alternating periods of abstention from calorie consumption with periods of ad libitum food intake and has been shown to have beneficial effects in many ways. Recent studies have shown that IF attenuates neurodegeneration and improves cognitive decline, enhances functional recovery after stroke as well as attenuates the pathological and clinical features of epilepsy in animal models. Furthermore, IF induced several molecular and cellular adaptations in neurons that overall enhanced cellular stress resistance, synaptic plasticity, and neurogenesis. In this review, the beneficial effects of IF on central neurological disorders are discussed. The information summarised in this review can be used to help contextualise existing research and better guide the development of future IF interventions.
Das Florilegium Vindobonense: neue Handschrift, neue Fragen
Authors: Delbó Katalin L.
Published: March 2023

This paper deals with the textual tradition of the Florilegium Vindobonense (14th century). According to the current state of research, only one manuscript of this alphabetical anthology is known, which can be found in Codex Philologicus Graecus 169 (Austrian National Library). In preparing the text for edition, however, I found another manuscript that contains the anthology in its entirety. Codex Vaticanus Graecus 895 also dates from the beginning of the 14th century. This article examines the relationship between the two text variants in light of the provenience of the manuscripts and textual criticism.
New records of mesopelagic siphonophores (Cnidaria, Hydrozoa) from the Colombian Caribbean collected during offshore exploration cruises
Authors: Cedeño-Posso Cristina , Dorado-Roncancio Edgar Fernando
Published: March 2023

Five species of siphonophores are newly recorded in the Colombian Caribbean Sea: the physonects Athorybia rosacea (Forsskål, 1775), Nanomia bijuga (Delle Chiaje, 1844), and Agalma okenii Eschscholtz, 1825 and the calycophores Amphicaryon ernesti Totton, 1954 and Hippopodius hippopus (Forsskål, 1776), from samples collected with deep-water trawls in six hydrocarbon exploration areas (GUA OFF 3, COL 1, COL 2, COL 3, COL 4; COL 10) where research projects were undertaken in 2013 and 2018 by the Marine and Coastal Research Institute “Jose Benito Vives de Andreis” in agreement with the National Hydrocarbon Agency.
Ten obcy z pierwszej strony. Funkcje perswazyjne fotografii w prasie okresu Polski ludowej na przykładzie „Odry” w latach 1945–1950
Authors:   Instytut Dziennikarstwa i Komunikacji Medialnej, Uniwersytet Śląski w Katowicach, Sarna Paweł
Published: March 2023

Press photography was a tool of propaganda in the Polish People's Republic. However, the period itself was not at all homogeneous, and the introduction of the Leninist model of the press in Poland was preceded by several years of planning. In addition to the propaganda and agitation press, there were also non-Marxist magazines, such as Odra in Katowice. The extent of their liberty shrank over time. This is evidenced by, among other aspects, photographs: next to labor leaders, cartoonish images of Germans were published, being an element of the anti-German discourse serving to justify forced expulsions. In the article, the author investigates the functioning of photography in the pages of a magazine gradually succumbing to the pressure of propaganda.