bluuebunny/crossref_metadata_2025 huggingface dataset:
Paternal age and perinatal outcomes: an observational study
Authors: Xholli Anjeza , Londero Ambrogio P. , Magnetti Elena , Vadrucci Sabrina , Neri Isabella , Marcantognini Gaia , Tramontano Anna Luna , Monari Francesca , Cagnacci Angelo
Published: August 2023

Objectives

The study’s primary aim was to examine the relationship between paternal age and perinatal outcomes.

Methods

This study used data from two hospital birth registries to examine the association between paternal age and adverse perinatal outcomes. The sample included all live singleton births between 2010 and 2022. The primary exposure was paternal age, and the following perinatal outcomes were considered: mode of conception, mode of delivery, pregnancy complications, and neonatal outcomes.

Results

A total of 15,232 pregnant women were considered. Maternal and paternal ages were 31.9 ± 5.3 and 36.5 ± 6.5 years, respectively. Independent of maternal, paternal age was associated with lower odds of spontaneous conceptions (OR 0.930, 95 % CI 0.968/0.993; p=0.003) and higher odds of intracytoplasmatic sperm injection (OR 1.054, 95 % CI 1.045/1.062; p=0.0001), respectively. In contrast to maternal age, paternal age decreased the odds of any (OR 0.922, 95 % CI 0.985/0.999; p=0.032) and urgent/emergent (OR 0.984, 95 % CI 0.975/0.993; p=0.0001) cesarean delivery. Paternal age did not affect the gestation length, placental or neonatal weight, blood loss during delivery, and neonatal 5th-minute Apgar score.

Conclusions

Paternal age is associated with perinatal outcomes. These findings suggest that advanced paternal age may have implications for reproductive counseling and prenatal care.
Transitional Domesticity: Collectivisation and Fractionalisation in Peer-to-Peer Digital Citizenry Learning from Socio-Innovations of Chinese-Asian Historical Contexts
Authors: Ng Provides
Published: August 2023

Collectivisation, as a socio-innovation, is an incremental part of history that has much to teach on questions of asset commoning. Such notions can provide renewed perspectives in understanding today’s peer-to-peer (p2p) economy and its influence on housing ownership models, which are constituting new forms of domesticity. This study understands domesticity as processes of collectivisation and de-collectivisation, and questions its conceptualisation as universal and invariant. It compares the transitioning moments by which a new governing body is instituted within recent-historical Chinese-Asian contexts, including mainland China, Taiwan, Hong Kong, and Singapore. These moments were often postcolonial, full of changes, uncertainty, crisis, and anticipation; these contexts were unprecedented in scale, density, and cultural collision; in common, these were junctures of socio-innovation in land distribution that fashioned different forms of citizenry. By looking at these instances of innovation with situated thinking and against their historical–cultural backgrounds, the findings in this study reflect on the design of socio-technological systems, the potential consequences of our design interventions, and what “innovation” may mean given the complexity of transitional challenges. Putting together cosmopolitan and vernacular histories, the historiography presented is a collage of card game narratives, archived posters, news headlines, statistical figures, and literature. This journey through events of socio-innovation from the twentieth century till recent decades reveals how the history of governance has always been a question of cultivating collective actions, one way or another, and today’s p2p economy is simultaneously collectivising and fractionalising such socio-economic exchanges in digital citizenry.
Cyclic Behaviors of Anisotropically Consolidated Gravelly Soils under Triaxial Condition: Effects of Sand Gradation Part of the Soil
Authors: Nikoonejad Khashayar , Mohsen Haeri S.
Published: August 2023

Previous studies have extensively examined the effects of silt contents and gradations on the cyclic behavior of sand and silt mixtures. However, comparable data on the mixture of sand and gravel are limited because of the experimental challenges of getting reliable testing results from gravel-size particles. Furthermore, in several case histories in which liquefaction occurred, the liquefied soils had experienced initial static shear stress because of the sloping ground conditions or the presence of structures and buildings on the site. The effects of initial static shear stress on the cyclic behavior of clean sands have been widely studied, and some recommendations have been suggested for practical engineers. This research aimed to evaluate the effects of the sand gradation part on the cyclic behavior of two gravelly soils, both with 60 % gravel and 40 % sand but different gradations (well-graded vs. uniformly graded). A total of 26 cyclic triaxial tests were carried out on moist-tamped reconstituted specimens of the tested gravelly soils. The specimens were anisotropically consolidated to assess the effects of initial static shear stress combined with sand gradation on cyclic behaviors of the tested gravelly soils. Results of the tests indicated that the gravelly soil with uniform sands had a greater resistance against liquefaction than the one with well-graded sands. The lower cyclic resistance of the gravelly soil with well-graded sands can be attributed to its lower permeability associated with wider gradation and finer particles of the sand part, leading to higher excess pore pressure buildup during cyclic loading. Moreover, a similar increase in the level of initial static shear stress resulted in an increase in the liquefaction resistance of the gravelly soils, whereas the soil with uniform sands experienced a higher increase than the soil with well-graded sands.
Improved Rapid Chloride Migration Test for Chloride Diffusion Coefficient of Concrete Based on the Image Processing Technique
Authors: Yang LuFeng , Long Fengbo , Chen Junwu , Chen Zheng
Published: August 2023

The point average method (PAM) is commonly used in rapid chloride migration (RCM) tests to measure the average depth of chloride migration in concrete specimen. In this article, a spatial average method (SAM) was presented to improve the accuracy and stability of results tested on the basis of an image processing technique. There are 74 groups of concrete specimens prepared with different mix proportions and tested by the RCM technique with varying voltage applied. The area of the chloride migration region on the longitudinal section of the concrete specimens was captured by the image processing technique firstly, and then both the average depth of chloride migration and the diffusion coefficient of concrete were accordingly determined. Furthermore, the spacing of measuring points and the range and amplitude of the edge effect in the RCM test were determined by detailed analysis of the test data, thereby improving results from the PAM and the SAM. It was demonstrated that the edge effect should be taken into consideration in the RCM test for determining the chloride diffusion coefficient of concrete, and the spacing of measuring points for the PAM in current codes and guidance is so large that they should be modified. The general validity, satisfying stability, and high accuracy of the proposed SAM were evidentially proved by comparing it with the test data of the PAM.
Single‐cell RNA sequencing identifies eggplant as a regulator of germ cell development in Drosophila
Authors: Sun Zhipeng , Nystul Todd G , Zhong Guohua
Published: August 2023

Drosophila ovarian germline stem cells (GSCs) are a powerful model for stem cell research. In this study, we use single‐cell RNA sequencing (scRNA‐seq), an RNAi screen and bioinformatic analysis, to identify genes involved in germ cell differentiation, including 34 genes with upregulated expression during early germ cell development and 19 genes that may regulate germ cell differentiation. Among these, a gene we have named eggplant (eggpl) is highly expressed in GSCs and downregulated in early daughter cells. RNAi knockdown of eggpl causes germ cell proliferation and differentiation defects. In flies fed a rich yeast diet, the expression of eggpl is significantly lower and knockdown or knockout of eggpl phenocopies a rich diet. In addition, eggpl knockdown suppresses the reduction in germ cell proliferation caused by inhibition of the insulin effector PI3K. These findings suggest that downregulation of eggpl links nutritional status to germ cell proliferation and differentiation. Collectively, this study provides new insights into the signaling networks that regulate early germ cell development and identifies eggpl as a key player in this process.
COVID-19 infection and risk analysis: a short introduction
Authors: Teodoro M Filomena , Oliveira Teresa A , Taero Élio
Published: August 2023

This work is part of a study about COVID-19 pandemic in Mozambique. Here we reproduce the first part of such study where a general introduction about the background and motivational aspects of COVID-19 in the world is made. Also, the relevance of mathematical and statistical modeling, the concepts of risk, risk analysis and spatial epidemiology are detailed. An introductory briefing on risk measures in epidemiology is performed. In the present work, we deal with risk assessment in epidemiology, we address aspects such as uncertainty and variability, types of risk assessment and its steps, methods, and relevant conditions for the quality of risk assessment. At the moment, the considered data set is still incomplete, only preliminary estimated models and preliminary results were obtained. A continuation of this manuscript will illustrate the models estimated and applied to the modeling of infectious diseases, presenting those with a mathematical and statistical approach to COVID-19 infection. Also, we will present the mapping of diseases. The preliminary results obtained with the provisional data set agree with similar performed studies.
Evaluation on the use of free amino acids in diets for red tilapia fries
Authors: Dabrowski Konrad , Hussein Ebtehal El-Sayed , Wojno Michal
Published: August 2023

An experimental investigation was conducted to address the question of the optimum proportion of protein, free amino acid mixture and test how red tilapia fries will respond to casein-gelatin based diets with partial and/or total replacement with FAA mixture. The protein used was the mixture of casein-gelatin (5:1) and free amino acids matched the casein-gelatin profile. Eight experimental diets based on the use of casein and gelatin (CG)-based diets were analyzed, and five feeding treatments with incomplete replacing of dietary protein with a mixture of FAA with uncertain AA profile. The casein and gelatin were replaced at different levels of 10% (FAA10), 20% (FAA20), 30% (FAA30), 40% (FAA40), and 50% (FAA50) and another two control diets without FAA inclusion. Red tilapia, Oreochromis mossambicus × O. niloticus fries with initial average weight of (0.13 g ±0.01) were fed for an 8-week feeding trial. The results of this study showed that fish fed CG diet had a significant effect (P<0.05) of higher mean final body weight (2.29 g) and specific growth (5.1% /day) than on the Cont 1 diet. During prolonged double feeding, the FAA30 treatment group presented the highest (worst) FCR (1.20) and was significantly different from the cont1 group (P<0.05) gives the lowest (best) value (0.89). The survival rate of the fish fed the experimental diets did not differ significantly with an average of 95.4% (P >0.05).There was no significant difference (P>0.05) in dry matter and ash contents of red tilapia fed with the examined diets. Fish fed the FAA50 and FAA30 diets had the highest lipid content (P<0.05), unlike the other treatments. There was a significant difference in the whole body of red tilapia fed the FAA40 diet (P<0.05), and has a high level of all amino acids compared to FAA30 diet and mostly higher than other groups. Despite the presence of beneficial nutrients such as casein and gelatin mixture, it can be concluded that the FAA components in red tilapia diets can increase growth and feed efficiency.
Theocratic system of government (Religious Judgment)
Authors: Farooq Haroun Hiba
Published: August 2023

The systems of governance in the international community vary greatly and we rarely find two States that are entirely similar in institutions of government. If States are larger in size and more in the population, there is a growing interest in the political system that governs them. However, the general division of government systems is limited to the degree of representation of popular will or the imposition of absolute power. A democratic system is talked about in the sense that the power is accountable to an elected parliament, or an absolute system in the sense that the ruler collects all powers, or an aristocratic system in the sense that the power is in the hands of a powerful elite, whether in terms of money, ignorance or feudal property. This division has increased in diversity, taking into account the functions that the system is supposed to perform, the forms in which society is settled, and the goals that it seeks or calls them. One of these is the bureaucratic system or the system of religious rule, which means that the authority and people are subject to the power of the clergy. This provision is not limited to a specific religion but not to other religions. It exists in all religions.
Presentation of pulmonary tuberculosis in a pregnant patient in a remote rural community in Northern Guatemala
Authors: Alvarez  Britizney Judith Villeda
Published: August 2023

Tuberculosis is one of the leading infectious causes of death in adults worldwide. The human host acts as a natural reservoir for Mycobacterium tuberculosis. Pregnancy carries an increased risk for infections.
Does the people in Bangladesh aware of “Diabetes Mellitus: the Disease of Prosperity” health care management
Authors: Salma Mukta Umme
Published: August 2023

Introduction: Diabetes mellitus is an increasing threat to the world, which is also considered a “disease of prosperity”. The manifests of demographic changes, cultural transition, modernization, and population aging, etc. make it a “developing countries problem”. The incidence of type 2 diabetes mellitus is increasing so rapidly and it is estimated by 2030 this number will almost double. Around 387 million people have diabetes which is equal to 8.3% people. It is projected that there will be a 42% increase in the number of individuals with diabetes, from 51 to 72 million in the developed countries and 170% increase, from 84 to 228 million, in the developing countries. Diabetes mellitus is a chronic disease once thought to be uncommon in Bangladesh, but now it has emerged as an important public health problem. About 3.6 million people are affected throughout the country. In Bangladesh around 4% adults aged 25 years or more had type 2 diabetes mellitus, and 80 lakh people in Bangladesh suffer from diabetes. It causes 6.4 percent of total deaths in the country. Awareness of diabetes is not up to the mark due to health education about diabetic, announcement, and overall lack of awareness of the disease and its effectiveness make it more complicated to management. Objectives: This study aimed to assess the knowledge and awareness status on health care management of type 2 diabetes mellitus in Bangladesh. Methods: This is a cross sectional study followed mixed method in design among Dhaka and Manikgonj districts. A close ended questioner was followed for quantitative data collection among 800 participants. For qualitative data collection in-depth informant interview conducted with 25 patients and 8 informal interviews was conducted with the physicians. Results: Findings reveal that very significant relation exist with compliances and complication. That compliances influence by various factors like sex, education, occupation, treatment facilitates etc. But who follow the proper compliances faced fewer complications. Also in addition to anti diabetic’s medication and other method of compliances to herbal method which were familiar to diabetic patients. Most compliance the respondents preferred are: diet, exercise, weight control than the medication. Conclusion: Overall a positive outcome blowing that the patients of type 2 diabetics who maintained proper compliances faced less complication than who didn’t follow them properly.
Multirésistance to antibiotics of pathogens isolated from human, animal and environment in the District of Bamako, Mali
Authors: Ouédraogo Judicaël , Gadi Timbiné Lassina , Traoré Bréhima , Karim Sangaré Abdoul , Sogodogo Elisabeth , Haukka Kaisa , Kouriba Bourèma , Hamadoun Babana Amadou
Published: August 2023

In Mali, coli and Salmonella infections are one of the most common bacterial diseases in outpatients. Treatment of these diseases has become challenging due to the emergence of pathogens with increasing resistance to available antimicrobial agents. The aim of this study is to determine the prevalence and evaluate the antibiotic resistance profile of the most frequently isolated strains of these bacteria involved in bacterial infections in Bamako, Mali. In this study, 400 samples of human, animal and environmental origin were obtained in the study area. The isolated bacteria were identified by biochemical tests. Disk diffusion method was applied to determine the antibiotic sensitivity of bacterial agents. Our results showed that, only 321 enterobacteria were isolated from the 958 samples analyzed. The most isolated pathogenic bacteria was E. coli with frequency rate of 20.77%. The others enterobacteria were Klebsiella sp. (6.05%), and Salmonella sp. (3.86%). All pathogenic bacteria isolated in this study, were highly resistant to Amoxicillin, Ticarcillin (100% for Klebsiella sp., isolated from all samples), and sensitive to Imipenem, Cefoxitine and Nitrofurantoine. According to the present survey, apart from Salmonella isolated from human and environmental samples, all the pathogenic bacteria isolated from human, animal and environmental sources showed multiple antibiotic resistance with a MAR index as high as 0.7 for E. coli from human source. This high level of multiresistance indicates that these human, animal and environment at Bamako could constitute a “high risk” source of antibiotic contamination.
Lignin extraction and green-like lignocellulose biomass pyrolysis as an alternative sustainable biofuel
Authors: Siddique Mohammad , Ahmad Hijaz , khan Kamran , Abbas Azhar , khan Suleman , M Asif
Published: August 2023

Cellulose, hemicellulose, and lignin make up the majority of biomass energy, which is a sustainable and renewable feedstock. Since lignin is the most common naturally occurring aromatic polymer on Earth, it holds great promise for useful products. Separating lignin from cellulose in biomass before converting it to biofuels or bioproducts is a crucial pre-treatment step. Alkali acid can be used to extract lignin from non-food components that remain following agricultural processing. As a result, we achieve the required lignin by the above procedure was used. The results demonstrate an extraction process of 5 hours, 4 hours, and 3 hours at 100 degrees Celsius, 130 degrees Celsius. Utilizing NaOH and H2SO4 for liquor and biomass to liquor ratio of 1:20. The total lignin content of the walnut shell was 13% lignin yield at 5 hr as well as neem tree bark biomass was found to be 5 % at 3 hours and walnut shell 14 % at 5 hr as well as 8% at 3 hours for almond shell lignin yield. It can be seen that the walnut shell produced the most lignin when compared to other types of biomass.
Autecology of microalgae in Nsit Ubium river
Authors: EM Denise , MO Kadiri , EA Uduak , VE Iniekpo
Published: August 2023

Analysis of water such as river and lakes can provide an insight into their composition and potential impact on the environment. Nsit Ubium River is a fresh water body that flows through urban areas in Akwa Ibom state. The locals attached a lot of socio-economic importance to the river, as a result of this a lot of humans generated pollutants find their way into it. Researching on the autecology of microalgae in the river, water and algae sample were collected from the river for the period of four months (October 2021 to January 2022) and analyzed for physiochemical parameters and species diversity using standard procedures. Water samples were collected using 1 litre transparent bottle while microalgae samples were collected by scrapping the attached plants on the river bank into a transparent bottle and preserved with a drop of a mixture of formaldehyde and lugol iodine. pH ranged between (4.1 and 5.8), conductivity between (15 and 153), alkalinity between (5.0 and 5.8), Nitrate between (0.5 and 0.80Mg/L), phosphate between (5.01 and 7.8Mg/L) and dissolve oxygen between (6.27 and 9.22mg/l) were determined. Five divisions of algae comprising of 92 taxa were identified during this study. The division, Bacillariophyta was the most represented division accounting for 80% occurrence and a total of 72 species, this was followed by Chlorophyta with 10%, Euglenophyta (7%), Cyanophyta (2%) which were accounted for 9, 6 and 2 taxa respectively. Dinophyta was the least represented with (1%) and contributed only one taxon. The month of November has the highest number of species with total of 54 taxa while December has the least occurrence (31 taxa). The composition of microalgae in Nsit Ubium River were dominated by diatoms (Bacillariophyta) which are good pollution bio-indicators. The Cyanophyta indicates higher nutrient enrichment which could have been due to runoff from agricultural land or waste water discharge. Therefore, the documented algae in the river could be usedful as a pollutant indicator in assessing pollution status of rivers.
Soil cement brick production process: literature review
Authors: Rocha Silva Beatriz , Santos Menezes Junior Hudson , José da Silva Filho Antônio , Manuela Soares Santos Any , Martins Cavalcante de Melo Fernanda , Gentil de Oliveira Almeira Vanessa , Alves de Oliveira Herbet
Published: August 2023

Soil-cement brick is one of the most common building materials for masonry construction, although it is not the oldest. As it is a product made up basically of soil and cement, it has existed in Brazil since the appearance of cement. The brick has been gaining market share due to several characteristics: ease of production, as it can be produced at the construction site itself, ease of obtaining raw material, as the soils exist in all locations, low processing costs, and easy handling. In addition, the soil-cement brick, also called ecological brick, stands out for not harming the environment like the ceramic brick that needs to be burned. Despite being a standardized product, production procedures and properties need to be updated. As an example, the soil used is very coarse which makes it difficult for the components to react. After conformation, the cure is still carried out without humidification, not obtaining adequate resistance. Furthermore, durability has been little studied. Thus, this article presents a literature review based on research in the production of soil-cement bricks. Materials and research methods used in the process of making soil-cement bricks, as well as various properties, are discussed. The most common results are grouped. The literature review showed that the production process is well defined, although it needs improvement. As for material properties, they meet the standards. However, the entire process needs more research.
Prehospital emergency care and professional burnout: nurses in focus
Authors: Filho Irami Araújo , Medeiro Lazaro Deogenes , Meneses Amália Cinthia
Published: August 2023

Burnout syndrome among nurses working in mobile emergency services is a relevant issue, as it influences the well-being of health professionals and the quality of care provided. Understanding the factors related to Burnout in this population is crucial for developing effective prevention and intervention strategies. This review aimed to critically analyze the Burnout syndrome in nurses working in mobile emergency services. After carefully selecting studies in relevant databases, a high workload, exposure to critical incidents, lack of organizational support, and inadequate coping mechanisms were identified. These factors promote emotional exhaustion, depersonalization, and a reduction in personal fulfillment, central components of the Burnout Syndrome. The need for interventions to face the challenges and risk factors involved in the illness process is highlighted. The importance of organizational support, workload management, and implementation of coping strategies to mitigate Burnout and improve the general well-being of nurses in this environment was emphasized. Additional research is needed to develop evidence- based interventions that effectively prevent and alleviate Burnout in this population.
On the relation between coronal hole latitude range and the speed of the solar wind at Earth’s bowshock
Authors: Birch M. J. , Bromage B.J.I.
Published: August 2023

This study is based on latitude measurements at the helio-meridian of two trans-equatorial coronal holes. After applying a simple algorithm based on super-radial expansion to the observation times, and translating these times to Earth’s bowshock, the measurements are compared with those of solar wind speed observed by the Wind and ACE spacecraft at those times. These comparisons reveal a causal relationship between the latitude range of the coronal hole open flux and the solar wind speed at the bowshock. Regression formulae are provided for predicting the speed of the fast solar wind from the latitude range of the coronal hole boundary withinof the helioequator.
The danger of ball lightning
Authors: I. Nikitin Anatoly
Published: August 2023

Ball lightning in close contact with living beings can strike them with electric current or high-frequency radio emission. The current, passing through the surface of the skin, can cause it to burn. The entry of current into the region of the heart or the respiratory center of the brain can lead to death. High-frequency radio emission from ball lightning occurs in the wavelength range of 1-10 cm and can be absorbed by liquid water. When ball lightning comes into close contact with the body, blood heating and muscle rupture can occur. Cases of the indicated action of ball lightning on people are given. It is shown that the charge of ball lightning can be kept in a shell consisting of polarized water molecules. The reason for the generation of electromagnetic radiation of ball lightning is the cyclic movement of electrons in closed orbits. The radiation power sharply increases when the uniform distribution of electrons along the orbit is violated. It had been proven that dashed traces that appear on photographic films during electrical discharges in water are created by the action of multiply charged clusters having the structure of ball lightning. These clusters can penetrate the skin into living organisms and remain in them for a long time. The biological effect of these clusters has not yet been studied, but there is evidence that they are hazardous to health (causing cancer and liver damage).
Gluon jets evolution in the quest for new physics
Authors: Judith Katongo , Manyika Davy Kabuswa
Published: August 2023

In this paper, our task is to review the evolution of Gluon Jets in view of the quest for physics beyond the Standard Model (SM) – the so called New Physics (NP). One of the major goals of the Large Hadron Collider (LHC) is to understand a new mode of matter called the Quark Gluon Plasma (QGP). This seemingly new form of matter consists of a confinement of quarks and gluons observed at very high temperature and density. This paper focuses on heavy ion collisions in order to get an understanding of the interaction of high momentum partons. It is these highly sophisticated interactions that probe quantum chromodynamics theorem at very high temperatures and densities. This results in the QGP phase of NP via propagation of very energetic Gluon Jets.
On the synopsis of the Higgs boson
Authors: Davy Manyika Kabuswa , George Likolo Anabiwa , Judith Katongo
Published: August 2023

In this paper, we analyze the Standard Model (SM) Higgs boson by computing both the partial width and the amplitude of a number of decay channels that the Higgs Boson can undergo. In our computations, we treat the Higgs boson as a free parameter despite its estimated mass of around 125GeV discovered at the Large Hadron Collider (LHC).
The role of Saturn’s magnetism in the equilibrium separation of particles of dense rings
Authors: Tchernyi Vladimir V , Kapranov Sergey V , Belodedov Mikhail V
Published: August 2023

For the first time we have demonstrated that, taking into account the interaction of Saturn's magnetic field with the diamagnetic ice particles of the rings, it is possible to explain the separation of particles. It is shown that there is an equilibrium distance between the particles when the force of gravitational attraction between them is compensated by the force of magnetic repulsion. An expression for calculating the equilibrium distance is obtained. It also becomes clear why the ring particles do not stick together.
From below or from above: How to force fashion MNCs to be more sustainable
Authors: Dobos Emese
Published: August 2023

Multinational companies in the fashion industry operate on a global level. Fashion was one of the first industries that outsourced production to developing countries and allowed exploitation and environmental pollution to remain hidden. But concerns regarding the industry's (un)sustainability are rising, regarding both the environmental and the social aspects. Fashion consumption is on the rise and the industry is among the most polluting ones. With this paper, I join the debate on how to force fashion MNCs to operate sustainably. There are two opposing views on where change should come: from above (regulation) or from below (change in customer habits and the activity of sustainable fashion NGOs). According to one view, fashion is underregulated and only legislation can be a solution: MNCs will only operate sustainably if they are forced by law. The other group claims that customers should drive green initiatives as their demand catalyzes MNC production. I claim that neither side is enough, as sustainability is not necessarily the number one consideration for customers or policymakers. In this conceptual paper, I use document analysis as a qualitative approach, and descriptive statistics to support my position.
Contribution to the determination of the chronology of the Brînzeni local group of Trypolye culture
Authors: Karski Kamil
Published: August 2023

The author focuses on the chronology of the Brînzeni (Brynzen) group of the Tripolye culture in the context of the radiocarbon dates obtained from two settlements sites in Moldova - Văratic Holm i Brînzeni XI (IX). Thanks to the conducted analyzes and the results of the latest research, it is possible to place the discussed results in a wider context, including materials in relation to the inner-Trypolye context and contacts with other communities in Central and Eastern Europe.
Енеолітичне поховання біля с. Колоколин у Верхньому Подністров’ї
Authors:   Deržavnij istoriko-kul’turnij zapovidnik M. Ostroh, Rivnens’ka oblast’, Vul. Akademična 5, UA – 35807 Ostroh, Позіховський Oлександр
Published: August 2023

In 1935, T. Sulimirski, in a grotto near the village of Kołokolin, examined two destroyed burials, which he referred to the third period of the Neolithic period in accordance with the contemporary periodization, and proposed separating a local group of the Lublin-Volyn culture. Currently, these burials are associated with the Lublin-Volyn culture. However, the analysis of the artefacts discovered indicates that they represent two different taxonomic units. One of them, containing an amphora, should be associated with the Lublin-Volyn culture, the others with the local group (phase) of the Pleszów-Modlnica Lengyel culture. This is confirmed by analogies both from settlements and burials of the aforementioned group (phase) from the Kraków region.
Nowe znalezisko nagolennika brązowego z terenu Lubelszczyzny
Authors:   Instytut Archeologii UMCS, Lublin, Kłosińska Elżbieta Małgorzata
Published: August 2023

A brown shin guard was recently discovered in a bend of the Tyśmienica River. The ornament was probably made in the Mazowsze-Podlasie center of bronze production. It can be dated to the younger section of the Early Iron Age – HaD.
Lightweight dwellings of the Funnel Beaker Culture from Vynnyky-Lysivka (Western Ukraine) and the phase CII of the Tripolye Culture from Gordinești II-Stînca goală (Northern Moldova) as examples of houses from the late 4 th Millennium BC
Authors:   Institute of Archaeology of the University of Rzeszów, Rzeszów, Rybicka Małgorzata , Hawinskyj Andryi ,   Ivan Krypiakevych Institute of Ukrainian Studies of the National Academy of Sciences of Ukraine, Lviv, Ukraine, Król Dariusz ,   Institute of Archaeology of the University of Rzeszów, Rzeszów
Published: August 2023

The paper presents the issue of house constructions from the second half of the 4 th millennium BC in western Ukraine and northern Moldova. While numerous reports concerning the dwellings of the Funnel Beaker Culture from the area east of the Bug River has been published, these accounts did not provide enough information to precisely assess their construction details. The first such structure whose features can be described in detail is the house from the site Lysivka in Vynnyky. The construction of the dwelling was lightweight, analogous to residential structures from the eastern group of the Funnel Beaker Culture. Another debatable topic was the characteristics of houses of the Gordinești group of the Tripolye Culture. Archaeological research at the site of Gordinești II-Stînca goală proved that communities of the late stage of this culture lived in lightweight houses that were built using clay. Neither the residential structures from the Vynnyky-Lysivka site, nor those from the site of Gordineşti II-Stînca goală, should be regarded as analogy to the classical “ploshchadkas” of the Tripolye Culture.
Osada z epoki brązu i wczesnej epoki żelaza na stanowisku Tarnobrzeg 5
Authors:   Muzeum Zamkowe w Sandomierzu, Sandomierz, Rajpold Wojciech
Published: August 2023

Archaeological research at the site Tarnobrzeg 5 site was carried out by Jan Gurba and Marek Florek in 1992, uncovering settlement materials of the Tarnobrzeg Lusatian culture (TLC) and the Trzciniec culture (TC). The latter were not very numerous and representative, so they did not give grounds for a specific determination of the chronology. Undoubtedly, the most interesting artefact was a bronze sickle with a knob, referring to the III and IV period of the Bronze Age. The TLC materials, which almost entirely can be referred to the III phase of its development, turned out to be crucial for determining the chronology of the site. In terms of pottery forms, the most numerous were egg-shaped pots with holes under the edge of the rim, finger hollows and plastic strips. An interesting form was also a bowl on an empty leg. Both egg-shaped pots and a bowl with an empty leg may be evidence of Eastern cultural influences. It is also worth noting two fragmentarily preserved vases, which – as it seems – can be dated to the turn of the II and III phases of the TLC, which would indicate the existence of chronologically older material. Bronze and iron tweezers have also been recorded here, which may document the dissemination of iron.
The size and structure of Tarnobrzeg Lusatian culture population
Authors:   Instytut Archeologii Uniwersytetu Rzeszowskiego, Rzeszów, Czopek Sylwester , Trybała-Zawiślak Katarzyna ,   Instytut Archeologii Uniwersytetu Rzeszowskiego, Rzeszów
Published: August 2023

Tarnobrzeg Lusatian culture is a cultural unit distinguished in south-eastern Poland, spanning from the middle Bronze Age to the early Iron Age (and thus roughly from the 14 th /13 th to the 5 th /4 th century BC). One of its most characteristic features are large crematory cemeteries (the largest consisting of more than a thousand tombs), utilized for many centuries. For many of them, apart from standard archaeological information, we also possess anthropological analysis, perfect for demographic considerations. One can specify the size and structure of the population which used the cemetery, as well as study the dynamics of changes in the course of a long period of burying the dead in the same place. Such an analysis in the form of social microstructure research is the basis of inference at a higher level, including mesoregions settlement, characterized by a network of co-occurring cemeteries and accompanying settlements. The sum of these observations, in turn, allows us to estimate the number of people living in the territory assigned to Tarnobrzeg Lusatian culture. At each level of inference in terms of population size, a crucial role is played by possibly the most accurate and precise estimation of time of cemetery usage or the presence of settlements in the analyzed region.
„Die eine aus dem Westen, die andere aus dem Süden“. Eine kleine Studie zu Fibeln in der Vekerzug-Kultur
Authors:   Institute of Archaeology of the Slovak Academy of Sciences, Nitra, Slovak Republic, Kozubová Anita
Published: August 2023

This study deals with the finds of fibulae from the Hallstatt period sites of the Vekerzug culture from Eastern Hungary and Southern Slovakia. The majority of the fibulae come from graves, the rest are either stray or settlement finds. Providing a more complex overview of the fibulae was at the centre of our interest, focused mainly on a cultural and spatial analysis, their possible relation to the specific gender or age category of the burial individuals and on possible importance of the fibulae for the costumes of the Vekerzug culture. Two main origin groups of the fibulae were identified, namely the fibulae of the Hallstatt type and the fibulae of Balkan origin. The fibulae were predominantly found in the graves of adult females. Their costumes do not differ from the female costumes of the Vekerzug culture without fibulae.
Koniec „łużyckiego świata”
Authors:   Instytut Archeologii Uniwersytetu Rzeszowskiego, Rzeszów, Czopek Sylwester
Published: August 2023

The article is devoted to the disappearance of the Lusatian cultural circle, also traditionally called the Lusatian culture or, in more recent literature, the Lusatian urnfields. At the beginning, terminological issues are clarified and views on the disappearance of this cultural unit, which played an important role in Central Europe in the middle of the 2nd and 1st millennium BC, are presented. The main analytical part focuses on four regions within today’s borders of Poland – north-western, north-eastern, south-western and south-eastern. This is due to the sharply outlined foreign cultural features that are particularly sharp in these regions. This applies to the infiltration of the Jastorf culture (and earlier Nordic influences), the Baltic circle, the Hallstatt cultural complex and the Eastern European nomadic world. They are the aftermath of migration movements of varying intensity and chronology, but always within the early Iron Age (9th/8th–5th centuries BC). Signs of the structural crisis of the local Lusatian communities, which are very fragmented and do not constitute a cultural monolith, are also important for the considerations undertaken. The issue of changes in the natural environment on the border of the subboreal and subatlantic periods is also considered.
An Embodied Approach to Abstract Functional Thinking Using Digital Technology: A Systematic Literature Review
Authors: Wei Hang , Bos Rogier , Drijvers Paul
Published: August 2023

Embodied cognition has recently gained increasing attention in mathematics education research. However, little is known about ways to use an embodied approach to reach for mathematical abstraction. In this study, we investigate this topic for the case of functional thinking (FT) using
digital technology (DT) through a systematic literature study. We searched four databases, resulting in a corpus of 51 papers. As a result, we found that action-based and perception-based embodied approaches to contextual/situational abstraction are more prevalent in literature than pseudo-embodied
approaches. In addition, the covariation and correspondence views on function are more frequently addressed compared to input-output and mathematical object views. We conclude with a discussion on the interplay of embodied approaches and abstraction in FT. For future research, we suggest investigating
embodied approaches using digital technology for developing FT concerning different types of mathematical abstraction.
How Blended Learning Techniques can be Applied in Teaching Mathematics to Engineering Students
Authors: Szegő Dóra M.
Published: August 2023

Begun in the mid-90s, computers have long been a staple in teaching mathematics to engineering students. In recent years, with the effects of the Covid-19 pandemic and the arrival of Generation Z in tertiary education, the role of blended learning has increased. This paper highlights
some of the greater challenges and successes of the transition from traditional teaching techniques to the creation of blended learning environments through three case studies. First, the translation of pen-and-paper education to a computerissed form in everyday online and face-to-face practice
classes. Second, the reimagination of correspondence courses as blended learning courses. Finally, setting the final exams in a computerised environment: what types of questions are appropriate to measure students' effective understanding of engineering mathematics.
Surface-modified boroncarbon BC5 nanotube with amine group as a sensor device element: theoretical research
Authors: Zaporotskova I. V. , Dryuchkov E. S. , Boroznina N. P. , Kozhitov L. V. , Popkova A. V.
Published: August 2023

The modification of boron-carbon nanotubes by functional groups is relevant in connection with the intensive development of the nano-industry, in particular, nano- and microelectronics. The thus modified nanotube can be used as an element of a sensor device for detecting micro amounts of various substances, for example metals included in salts and alkalis. The possibility of creating a highly effective sensor based on a single-layer boron-carbon ВС5 nanotube with a surface modified functional amine group (—NH2) is being discussed in this paper. Results of quantum-chemical studies showed that the functional amine group connecting to the boron-carbon nanotube (BCNT) type (6, 0) at a distance of 0.16 nm (when modified to both a surface carbon atom and a boron atom), and to BCNT type (6, 6) — at a distance of 0.16 nm when the group connecting to the carbon atom and 0.17 nm when connecting to the boron atom, which indicates the emergence of a chemical bond between the investigated BCNT and the amine group. The results of computer simulation of interaction between surface-modified ВС5 nanotube and alkali metal atoms (lithium, sodium, potassium) to be initialized are presented. The sensory interaction of the modified boron-carbon nanosystem with metal atoms is investigated, at which the selected atoms are identified at a certain distance. When reacting with alkali metal atoms in the BC5 + NH2 complex, it increases the number of carriers due to the transfer of electron density from metal atoms to modified BCNT. The results presented in this paper were obtained within the molecular cluster model by quantum-chemical calculations using the calculating DFT method with exchange-correlation functionality B3LYP (valence-split basis set 6-31G). It has been shown that the amine group modified boron-carbon ВС5 nanotube shows a sensory response to the above alkali metal atoms and can be used as an element of the sensor device.
Nanocomposites FeCoNi/C based on polyvinyl alcohol: synthesis and electromagnetic properties
Authors: Muratov D. G. , Kozhitov L. V. , Kazaryan T. M. , Vasil'ev A. A. , Popkova A. V. , Korovin E. Yu.
Published: August 2023

Triple FeCoNi nanoparticles distributed and stabilized in the carbon matrix of FeCoNi/C metal-carbon nanocomposites were synthesized. The synthesis of nanocomposites was carried out by controlled IR pyrolysis of precursors of the "polymer-metal nitrates" type, obtained by joint dissolution of the components with subsequent removal of the solvent. The effect of the synthesis temperature on the structure, composition, and electromagnetic properties of nanocomposites has been studied. It was shown by XRD that the formation of ternary FeCoNi nanoparticles occurs through the dissolution of Fe in the nanoparticles of the NiCo solid solution. With an increase in the synthesis temperature, the size of metal nanoparticles increases, which is determined by the processes of their agglomeration and coalescence during matrix rearrangement. Also, depending on the synthesis temperature, nanoparticles of a ternary alloy with different compositions can be formed, and the ratio of metals specified in the precursor is achieved at 700 °C. By Raman spectroscopy was shown  that, with an increase in the synthesis temperature, the degree of crystallinity of the carbon matrix of nanocomposites increases, and graphene structures consisting of several layers can be formed. The frequency dependences of the relative complex dielectric and magnetic permeabilities of nanocomposites in the range of 3–13 GHz were studied. It is shown that an increase in the synthesis temperature causes a significant increase in both dielectric and magnetic losses (~ 2 times). The former are associated with the formation of a complex nanostructure of the carbon matrix of the nanocomposite, while the latter are determined by an increase in the size of nanoparticles and a shift of the EFMR frequency to the low-frequency region. Reflection loss (RL) calculations were performed according to the standard procedure based on experimental data of the frequency dependences of the complex magnetic and dielectric permittivity. It was shown that control of the frequency range and absorption value of electromagnetic waves (from 50 to 94%) can be carried out by changing the temperature of synthesis of nanocomposites.
Current problems of creation of research infrastructure for synthesis of new materials in the framework of the digital transformation of society
Authors: Zatsarinnyy A. A. , Abgaryan K. K.
Published: August 2023

The article discusses the main aspects of the significance of the development of a high-performance environment for scientific research in the conditions of digital transformation, used in solving the problems of synthesis of new materials with desired properties. Some historical facts are given that testify to the enormous role played by Soviet scientists in the creation of computer technology for scientific research. The analysis of the experience of the Federal Research Centre “Information and Control”, RAS in the creation of a modern high-performance platform and its use for scientific research is given. The necessity of its application for solving applied problems related to the selection of new materials in the field of microelectronics is substantiated.
Self-timed circuits as a basis for developing next generation high-reliable high-performance computers
Authors: Zatsarinnyy A. A. , Stepchenkov Yu. A. , Diachenko Yu. G. , Rogdestvenski Yu. V.
Published: August 2023

The paper proposes design and circuitry solutions for the implementation of high-performance next generation computers. They are based on self-timed circuit design methodology and provide an increase in the tolerance of computing systems to soft errors resulting from induced noises and radiation exposure.