bluuebunny/crossref_metadata_2025 huggingface dataset:
The Controlled Preparation of a Carrier-Free Nanoparticulate Formulation Composed of Curcumin and Piperine Using High-Gravity Technology
Authors: Han Ning , Liu Yue , Liu Xin , Li Pengyue , Lu Yang , Du Shouying , Wu Kai
Published: June 2024

Carrier-free nanoparticulate formulations are an advantageous platform for the oral administration of insoluble drugs with the expectation of improving their bioavailability. However, the key limitation of exploiting carrier-free nanoparticulate formulations is the controlled preparation of drug nanoparticles on the basis of rational prescription design. In the following study, we used curcumin (Cur) and piperine (Pip) as model water-insoluble drugs and developed a new method for the controlled preparation of carrier-free drug nanoparticles via multidrug co-assembly in a high-gravity environment. Encouraged by the controlled regulation of the nucleation and crystal growth rate of high-gravity technology accomplished by a rotating packed bed, co-amorphous Cur-Pip co-assembled multidrug nanoparticles with a uniform particle size of 130 nm were successfully prepared, exhibiting significantly enhanced dissolution performance and in vitro cytotoxicity. Moreover, the hydrogen bonding interactions between Cur and Pip in nanoparticles provide them with excellent re-dispersibility and storage stability. Moreover, the oral bioavailability of Cur was dramatically enhanced as a result of the smaller particle size of the co-assembled nanoparticles and the effective metabolic inhibitory effect of Pip. The present study provides a controlled approach to preparing a carrier-free nanoparticulate formulation through a multidrug co-assembly process in the high-gravity field to improve the oral bioavailability of insoluble drugs.
Estimation of Photosynthetic Induction Is Significantly Affected by Light Environments of Local Leaves and Whole Plants in Oryza Genus
Authors: Xiong Zhuang , Xiao Jian , Zhao Jinfang , Liu Sicheng , Yang Desheng , Xiong Dongliang , Cui Kehui , Peng Shaobing , Huang Jianliang
Published: June 2024

Photosynthetic induction and stomatal kinetics are acknowledged as pivotal factors in regulating both plant growth and water use efficiency under fluctuating light conditions. However, the considerable variability in methodologies and light regimes used to assess the dynamics of photosynthesis (A) and stomatal conductance (gs) during light induction across studies poses challenges for comparison across species. Moreover, the influence of stomatal morphology on both steady-state and non-steady-state gs remains poorly understood. In this study, we show the strong impact of IRGA Chamber Illumination and Whole Plant Illumination on the photosynthetic induction of two rice species. Our findings reveal that these illuminations significantly enhance photosynthetic induction by modulating both stomatal and biochemical processes. Moreover, we observed that a higher density of smaller stomata plays a critical role in enhancing the stomatal opening and photosynthetic induction to fluctuating light conditions, although it exerts minimal influence on steady-state gs and A under constant light conditions. Therefore, future studies aiming to estimate photosynthetic induction and stomatal kinetics should consider the light environments at both the leaf and whole plant levels.
Unravelling the Homology between Calycine Glands in Malpighiales: New Data from Basal Malpighiaceae
Authors: Bonifácio Stéphani Karoline Vasconcelos , Amorim André Márcio Araújo , Paiva Élder Antônio Sousa , Oliveira Denise Maria Trombert
Published: June 2024

Discussing homology relationships among secretory structures remains a relatively underexplored area in botanical research. These structures are widely dispersed within Malpighiales, one of the largest orders of eudicots. Within Malpighiales, both extranuptial and nuptial nectaries are present, and they do not seem homoplastic or share evolutionary connections. Particularly in Malpighiaceae, extensive research has focused on the ecological interactions mediated by glands. Botanists largely agree that elaiophores in sepals of Neotropical Malpighiaceae have evolved from extrafloral nectaries on leaves. However, the evolutionary origin of elaiophores has yet to be thoroughly examined, particularly in comparison to outgroups. This study provides empirical evidence on the ontogeny of elaiophores and investigates their evolutionary origins and homology relationships across different lineages of Malpighiales using comparative anatomy. Our findings suggest that elaiophores are likely homologous to extranuptial nectaries found in sepals of other Malpighiales lineages, originating from nectaries on leaves. This discussion is a starting point for future studies exploring the evolution of nectaries found in flowers, whether extranuptial or nuptial, and their potential origins from nectaries in vegetative organs such as leaves. Understanding these relationships could shed light on the selective pressures influencing floral morphologies.
Computational Analysis of Polymeric Biodegradable and Customizable Airway Stent Designs
Authors: Ayechu-Abendaño Ada , Pérez-Jiménez Aurora , Sánchez-Matás Carmen , López-Villalobos José Luis , Díaz-Jiménez Cristina , Fernández-Parra Rocío , Malvè Mauro
Published: June 2024

The placement of endotracheal prostheses is a procedure used to treat tracheal lesions when no other surgical options are available. Unfortunately, this technique remains controversial. Both silicon and metallic stents are used with unpredictable success rates, as they have advantages but also disadvantages. Typical side effects include restenosis due to epithelial hyperplasia, obstruction and granuloma formation. Repeat interventions are often required. Biodegradable stents are promising in the field of cardiovascular biomechanics but are not yet approved for use in the respiratory system. The aim of the present study is to summarize important information and to evaluate the role of different geometrical features for the fabrication of a new tracheo-bronchial prosthesis prototype, which should be biodegradable, adaptable to the patient’s lesion and producible by 3D printing. A parametric design and subsequent computational analysis using the finite element method is carried out. Two different stent designs are parameterized and analyzed. The biodegradable material chosen for simulations is polylactic acid. Experimental tests are conducted for assessing its mechanical properties. The role of the key design parameters on the radial force of the biodegradable prosthesis is investigated. The computational results allow us to elucidate the role of the pitch angle, the wire thickness and the number of cells or units, among other parameters, on the radial force. This work may be useful for the design of ad hoc airway stents according to the patient and type of lesion.
Electrochemical Investigation of PEDOT:PSS/Graphene Aging in Artificial Sweat
Authors: Tzaneva Boriana , Mateev Valentin , Stefanov Bozhidar , Aleksandrova Mariya , Iliev Ivo
Published: June 2024

Herein, we investigate the potential application of a composite consisting of PEDOT:PSS/Graphene, deposited via spray coating on a flexible substrate, as an autonomous conducting film for applications in wearable biosensor devices. The stability of PEDOT:PSS/Graphene is assessed through electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and linear polarization (LP) during exposure to an artificial sweat electrolyte, while scanning electron microscopy (SEM) was employed to investigate the morphological changes in the layer following these. The results indicate that the layers exhibit predominant capacitive behavior in the potential range of −0.3 to 0.7 V vs. Ag/AgCl, with a cut-off frequency of approximately 1 kHz and retain 90% capacity after 500 cycles. Aging under exposure to air for 6 months leads only to a minor increase in impedance, demonstrating potential for storage under non-demanding conditions. However, prolonged exposure (>48 h) to the artificial sweat causes significant degradation, resulting in an impedance increase of over 1 order of magnitude. The observed degradation raises important considerations for the long-term viability of these layers in wearable biosensor applications, prompting the need for additional protective measures during prolonged use. These findings contribute to ongoing efforts to enhance the stability and reliability of conducting materials for biosensors in health care and biotechnology applications.
Poly(2-isopropenyl-2-oxazoline) as a Versatile Functional Polymer for Biomedical Applications
Authors: Kronek Juraj , Minarčíková Alžbeta , Kroneková Zuzana , Majerčíková Monika , Strasser Paul , Teasdale Ian
Published: June 2024

Functional polymers play an important role in various biomedical applications. From many choices, poly(2-isopropenyl-2-oxazoline) (PIPOx) represents a promising reactive polymer with great potential in various biomedical applications. PIPOx, with pendant reactive 2-oxazoline groups, can be readily prepared in a controllable manner via several controlled/living polymerization methods, such as living anionic polymerization, atom transfer radical polymerization (ATRP), reversible addition–fragmentation transfer (RAFT) or rare earth metal-mediated group transfer polymerization. The reactivity of pendant 2-oxazoline allows selective reactions with thiol and carboxylic group-containing compounds without the presence of any catalyst. Moreover, PIPOx has been demonstrated to be a non-cytotoxic polymer with immunomodulative properties. Post-polymerization functionalization of PIPOx has been used for the preparation of thermosensitive or cationic polymers, drug conjugates, hydrogels, brush-like materials, and polymer coatings available for drug and gene delivery, tissue engineering, blood-like materials, antimicrobial materials, and many others. This mini-review covers new achievements in PIPOx synthesis, reactivity, and use in biomedical applications.
Mashhadis and Immigration: Redemptive Narratives and Practical Challenges
Authors: Nissimi Hilda
Published: June 2024

This paper analyzes redemptive narratives constructed by Mashhadi Jewish immigrants through oral histories, memoirs, and life stories collected across generations. It examines how conceptions of religion, community, and family shaped their meaning-making around migration challenges. The first case study examines Malka Aharonoff’s lamentation reconstructed from religious redemption across generations into a Zionist narrative. The second analyzes Esther Amini’s published memoir, which reconciles her story with that of her immigrant parents through narrative, demonstrating its role across generations with gender as the focal point. The later cases of Aharon Namdar and Mehran Bassal present individual oral histories, capturing major migration waves from Iran, playing out the differing import and expression given to Zionism and to religion by different immigrants. The study explores how selective appropriation and cultural translation occurred between generations. It sheds light on ideological and cultural frameworks underlying immigrant perspective. By comparing narratives emphasizing collective redemption versus individual experiences, it offers insights into identity formation and the role of memory in immigrant communities dispersing over time. By demonstrating narrative’s therapeutic role in processing dislocation across generations, the study sheds light on cultural transmission and identity formation within dispersed immigrant communities. It offers a fresh perspective on their migration experiences.
Tessellation-Based Construction of Air Route for Wireless Sensor Networks Employing UAV
Authors: Choi CheonWon
Published: June 2024

In this paper, we consider a wireless sensor network consisting of an unmanned aerial vehicle (UAV) acting as a sink node and a number of sensor nodes scattered uncertainly on the ground. In the network, the UAV flies to a spatial point called point of interest and hovers to collect environmental data from neighboring sensor nodes. Then, the UAV proceeds to the next point of interest. The UAV must gather data from all the sensor nodes. On the other hand, a shorter round-trip air route of the UAV is more preferred since a battery-operated UAV needs regular recharging. To satisfy the requirement and to adhere to the recommendation as well, especially in the situation where only vague locational information about sensor nodes is available, we propose a scheme that follows three steps. First, it covers the sensor field of the wireless sensor network with three categories of hexagonal tessellations. Secondly, it establishes a point of interest at the centroid of each tile. Thirdly, it constructs an air route of the UAV, which visits every point of interest along a Hamiltonian cycle on the induced graph. Next, we develop a closed-form expression for the exact flight distance attained by the proposed scheme. For comparative evaluation, we discover some optimal schemes that minimize the flight distance by completely inspecting all patterns and corroborating the property of Hamiltonicity. The flight distance along the air route constructed by the proposed scheme is found to be only slightly longer than the flight distance yielded by an optimal scheme. Furthermore, the proposed scheme is proven to be practically valid when a common multicopter is employed as the sink node.
Modeling and Optimization of Container Drayage Problem with Empty Container Constraints across Multiple Inland Depots
Authors: Yu Xuhui , Feng Yin , He Cong , Liu Chang
Published: June 2024

Container drayage involves the transportation of containers by trucks. Although the distance is relatively short compared to maritime and rail transport, container drayage accounts for 25% to 40% of the total container transportation costs and significantly contributes to increased fuel consumption and carbon emissions. Thus, the modeling of the container drayage problem (CDP) has received a lot of attention in the last two decades. However, the three fundamental modeling factors, including the combination of trucking operation modes and empty container relocation strategies, as well as empty container constraints and multiple inland depots, have not been simultaneously investigated. Hence, this study addressed a comprehensive CDP that simultaneously incorporates the three modeling factors. The problem was formulated as a novel mixed integer linear programming (MILP) model based on the DAOV graph. Given the complexity of this problem, it was not realistic to find an exact solution for large instances. Therefore, an improved genetic algorithm (GA) was designed by integrating the “sequential insertion” method and “solution re-optimization” operation. The performance of Gurobi and GA was validated and evaluated through randomly generated instances. The results indicate that (1) the proposed algorithm can provide near-optimal solutions for large-scale instances within a reasonable running time, (2) the greatest cost savings from combining trucking operation modes and empty container relocation strategies range from 10.45% to 31.86%, and (3) the three modeling factors significantly influence the fuel consumption and carbon emissions, which can provide managerial insights for sustainable container drayage practices.
Developing Internal and External Proportional Integral Derivative Water Surface Controller in HEC-RAS
Authors: Shahverdi Kazem , Noorali Atefe , Ghodousi Hesam , Berndtsson Ronny
Published: June 2024

Controlling the water level in irrigation channels is important for the efficient management of irrigation and water delivery. In this study, the proportional–integral–derivative (PID) controller was implemented in both the HEC-RAS boundary condition, as an internal model, and MATLAB, as an external model. In the latter, the Hydrologic Engineering Center’s (HEC) River Analysis System (HEC-RAS) model was automated for irrigation canals by coding in the MATLAB script. To test the new models, E1R1 (first right bank branch of the first eastern canal in the Dez irrigation network, Khuzestan Province, Iran) irrigation canal data were prepared in HEC-RAS. A flow pattern was provided to simulate the canal water levels. The results showed efficient control of the water level for both models. The maximum and average water depth deviations from the target value were 13% and 4%, respectively, which fall in the good agreement range. The fewer these indicators, the better the performance is. The efficiency and adequacy were close to the ideal value and in the good agreement classes. The equity indicator was 0.013, which is very close to its ideal value of zero, showing efficient water distribution in the tested system. According to the literature for the equity indicator, a range of 0–0.10 is good, a range of 0.11–0.25 is fair, and a range of greater than 0.25 is poor. The results showed that simple and fast implementation is the main advantage of the internal model; however, it is not suitable for implementing complex controllers. Conversely, the external model can be implemented for complicated algorithms without any limitations.
Global Patent Analysis of Battery Recycling Technologies: A Comparative Study of Korea, China, and the United States
Authors: Lee Chae-Hoon
Published: June 2024

This study provides a comprehensive analysis of global patent trends in battery recycling, focusing on secondary batteries and related technologies across Korea, China, and the United States. The methodology involved collecting data from various patent databases, followed by quantitative analysis to identify technology trends and guide future development. The research employed statistical tools to analyze patent activities, including the frequency and scope of patent filings, and comparative analysis to highlight differences between countries. This study reveals distinct emphases on technologies such as lithium-ion and waste battery recycling, highlighting notable differences in patent activities among key companies and countries. China’s large number of patents in battery manufacturing processes contrasts with the USA’s focus on electrochemical cell construction and storage systems, while Korea shows significant activity in waste battery technology. The novelty of this paper lies in its detailed comparative analysis of patent trends across these three major economies, providing insights into the technological focuses and priorities of each country. The study also identifies key challenges, such as the need for consistent innovation and broader geographic coverage in Korea, enhancing patent influence and international presence in China, and ensuring high patent quality and fostering innovation in lagging sectors in the United States. Addressing these challenges through enhanced collaboration, increased R&D investments, and supportive policies is crucial for strengthening the global position and driving further innovation in the battery recycling sector.
SOFT SKILLS DEVELOPMENT OF PRIMARY SCHOOL TEACHER OF THE NEW UKRAINIAN SCHOOL: METHODOLOGICAL GUIDELINES
Authors: Bilous O.
Published: June 2024

The review article characterizes the priorities for primary school teachers’ soft skills development, taking into account the conditions of the New Ukrainian School. According to the results of the survey based on the method of ranking primary school teachers in Kyiv, who implement the concept of the NUS in modern conditions, we have found that practicing teachers unevenly ranked the main soft skills in terms of importance in their professional activities, which requires finding forms and methods of their improvement and development in the conditions of formal, non-formal and informal education.
The main soft skills are defined as follows: sociability / contact / ability to listen / ability to communicate through different networks; ability to work in a team / ability to manage team work; critical thinking / ability to comprehensively approach problem solving; focus on lifelong learning / motivation to grow professionally through formal, non-formal, informal education / prognostic vision of one’s own development; the ability to emotional self-preservation / stress resistance / psychological flexibility; positive thinking / emotional intelligence; ability to empathize / reasonable limits of empathic attitude; creativity / innovativeness; rational time-management; self-presentation skills / portfolio creation algorithm / ambition.
The basis for organizing the process of developing soft skills should be appropriate methodological guidelines, which include methodological approaches and principles. The introduction of activity, andragogical, axiological and systemic methodological approaches to the issue of primary school teacher’s soft skills development contributes to the relationship of his personal and professional growth, the introduction of partnership pedagogy, where the teacher is positioned as a mentor, tutor, coach, facilitator, a person, who inspires learning. Soft skills development based on the main defined principles (flexibility of activity, connection of theory and practice, creativity, dialogical interaction, reliance on experience, partnership, reflection) helps to realize the professional, pedagogical and personal potential of primary education specialists in conditions of the New Ukrainian School.
PRESERVATION OF THE TRADITIONS OF THE UKRAINIAN FOLK SCENOGRAPHY OF THE POLTAVIA REGION IN THE PEDAGOGICAL WORK OF THE CHOREOGRAPHERS-PRODUCERS
Authors: Sokil L. , Tsebriy I.
Published: June 2024

The article deals with the preservation of the tradition of Ukrainian folk scenography of the Poltava region in the pedagogical work of choreographers-directors, the peculiarities of the creative direction of each of the choreographic collectives of the Poltava region, the history of their formation and the form of making talented leaders. The authors highlight the common and distinctive features of the work of these collectives and analyze and compare the specifics of choreographic and vocal-choreographic productions. The article reflects unique figures that revived not only the Poltava regional dance but also the dance culture of Ukraine in general. Performances of Poltava folk ensembles in Estonia, Poland, Germany, France, and other countries near and far abroad, recognition of them and their repertoire on the world stage proves the value of Ukrainian folk scenography.
The difference in the teaching of folk scenography in various types of amateur dance groups consists in the extent of formation of choreographic skills and skills of the members of the group (professional level of performance); the availability and number of training classes in various types of choreography (classical, modern, historical and every day, etc.) and auxiliary (acting skills, acrobatics, singing, playing musical instruments, etc.); creative activity in the social life of the university, the city, the country; created in the repertoire of the team, as well as in various pedagogical models of teachers-choreographers. Having analyzed the traditions of Ukrainian folk scenography of the Poltava region in the pedagogical work of choreographers-directors and the current state of the folk-stage choreographic culture of the Poltava region, we can conclude that in the Poltava region, there is a considerable number of collectives, both professional and amateur, which not only preserve the regional choreographic culture but also multiply it. Today, the leading ensembles that demonstrate their skills at the world level are the Honored Amateur Ensemble of Song and Dance «Ltava» named after V. Mishchenko, the dance group of the folk choir «Kalyna», the Song and Dance Ensemble «Poltava», the folk ensemble of Ukrainian dance «Cossack entertainments», choreographic ensemble «Falcons», etc.
We consider the prospect of further research to be the creation of practical recommendations for training choreographer teachers to work with folk scenography in out-of-school education institutions; the use of specific methods of preparation of a choreographic work, which take into account the unique features of folk scenography of the Poltava region.
PECULIARITIES OF MUSIC EDUCATION IN ISRAEL: TRADITIONS AND NATIONAL PRIORITIES
Authors: Bendikova S.
Published: June 2024

The review article presents the peculiarities of musical education in Israel, taking into account the multicultural diversity of Israeli society, and vectoriality for the preservation of cultural and educational traditions; similarities and differences in musical education in Israel and Ukraine were revealed. It is proved that the teaching of music and singing in Israel has features, among which the multicultural content, which combines elements of European classical music, Jewish musical tradition, and music of various ethnic groups living in the country; the organization of musical education in kindergartens and schools is influenced by religious canons. It has been found that musical education in Israel is considered an essential factor in the development of the individual and society as a whole, which contributes to the development of creative thinking, emotional intelligence, communication skills, and a sense of unity with different cultures of pupils and students; the system of teaching music and singing in Israel is characterized by inclusiveness - it takes into account the needs and abilities of students, including children with special needs. It was found that the content of music education in educational institutions of various levels in Israel is regulated by programs concluded by the Ministry of Education of the country, as well as resources for studying musical disciplines and musical education are offered at the state level.
A comparative analysis of the peculiarities of musical education in Ukraine and Israel made it possible to conclude specific differences: Ukrainian musical education is based on the achievements of national, European, and world musical culture and educational traditions; Israel is an eastern country with its national ethnic music, and it is also a modern country with a high level of classical music and musical culture, which is a component of world culture. In Israel, social and educational processes take place taking into account religious affiliation and a corresponding attitude to art, in particular to music. Among the related features, there is a reliance on the traditions of musical culture and values, a focus on fostering tolerance, respect, and understanding of racial, ethnic, and national differences, and the ability to live with people of other cultures, languages, religions and the desire to preserve national traditionalism using musical art.
DEVELOPMENT TENDENCIES OF PHILOLOGICAL PEDAGOGICAL EDUCATION IN UKRAINE: CHALLENGES AND PROSPECTS
Authors: Vovk M.
Published: June 2024

The review article outlines the problems of training a modern teacher-philologist, teacher-researcher in the field of philology. The trends in the development of philological pedagogical education in Ukraine have been outlined: the implementation of a competency-based approach in the training of philologists, the activation of scientific research activities of future philologists, the structuring of the content of disciplines on an interdisciplinary basis, the discreteness of the structuring of the content taking into account the Concept of the New School, state standards of basic secondary education, specialised schools; innovativeness and pragmatism of practical training of philological specialists. It has been found that the identified trends indicate the orientation of managers of higher pedagogical education institutions, teachers to improve the quality of training of philological teachers, taking into account innovative changes in the system of basic secondary education, specialised schools. The prospects for improving philological pedagogical education at the legislative-normative and organisational-pedagogical levels have been substantiated.
GENERAL STRATEGY FOR THE DEVELOPMENT OF PROFESSIONAL LANGUAGE COURSES FOR STUDENTS OF DIFFERENT SPECIALTIES
Authors: Styrkina Yu.
Published: June 2024

The article is devoted to the strategy of developing language courses in a professional direction. Using the example of a professional English language course, the author substantiates the possibility of a generally unified approach to the construction of such courses, the content of which logically combines purely linguistic topics that allow students to focus on practicing the phenomena of English grammar, and material devoted to the stylistic aspects of vocabulary and grammar formally business, scientific and academic style. Students are invited to choose an interesting professional topic and focus on gathering English-language information about it, preparing an English-language presentation, report, oral presentation, article, preparing for a debate or discussion on this topic. The author proposes the application in the course of elements of the project method and the method and the CLIL method, namely, language immersion, when students work on the same professional topic, but in different directions and aspects, while at the same time learning English-language professional vocabulary. At the same time, there is an acquisition of an active speech reserve and an actualization of a passive one, since students perform both oral and written types of work, both reproductive exercises and creative works. In the opinion of the author, this approach can help the teacher independently develop a language course for a professional direction on the basis of any language (including Ukrainian) and for students who receive different specialties, while simultaneously adding certain own exercises, exercises and creative inventions.
ASSESSMENT OF WEAR AND DESTRUCTION OF SOLID CARBIDE CUTTERS DURING MILLING OF HARDENED STEEL 4X5MF1C WITH A HARDNESS OF 52 HRC
Authors: Hurtasenko A. , Cherednikov I. , Mamchenkova A. , Chuev K. , Bondarenko A.
Published: June 2024

The main problem when milling hardened steel is its high hardness and uneven hardening of the workpiece, which exposes the cutting tool to cyclic loads during the cutting process. The ultrahigh temperatures created in the primary and secondary shear zones significantly accelerate various types of wear of hard alloy cutting tools, especially adhesive and diffusion wear. The most common and main cause of tool failure is brittle fracture. This paper presents a study of the influence of geometric parameters of the cutting part of the end mill, wear-resistant coating, chemical composition and grain size of a hard alloy on the degree of various types of wear and destruction during milling of hardened steels. The parameters of the tool were studied, such as the wear-resistant coating, the microstructure of the hard alloy, the angle of inclination of the cutting edge, the front and rear corners of the cutting edge. The grain size and chemical composition of the hard alloy were studied and analyzed using an electron microscope and energy dispersive spectrometry. The thickness of the wear-resistant coating was measured by the ball abrasion method using a coating thickness gauge. After the tests, conclusions were drawn about the influence of the alloy's grain size, chemical composition and the widespread type of wear
DEPENDENCE OF THE MAXIMUM POWER AND ENERGY CONSUMPTION OF THE CYCLE ELECTRIC DRIVE OF ROBOTS AND MECHATRONIC MODULES ON THE MOTION LAW AND ITS PARAMETERS
Authors: Makin M. , Volkov A. , Kochneva O.
Published: June 2024

Cycle and position drives are the basis for automation of discrete manufacturing. They are usually used to implement loading, orientation and transport operations in process equipment, as well as in industrial robotics and mechatronic modules for various purposes. The main characteristics of such drives in many cases are the values of displacements and motion times. The mathematical model of drives for typical laws of motion characterized by acceleration and deceleration times takes into account thermal losses in a DC motor with independent excitation. The study was carried out in order to determine the efficiency of optimizing the motion law by maximum power consumption while taking into account the losses in the motor. Two laws of change of acceleration of the electric motor were modelled: rectangular and triangular. For each law both situations are considered: movement with and without a section of uniform motion. Studies of models in Simulink environment allowed to establish the relationship between energy consumption, power and the law of motion. The dependence between voltage and current consumption on the type of motion law was obtained. Energy losses in the electric motor do not exceed 2% of the total power consumption at the prevailing inertial load, and 44 % at the active resistance torque equal to the nominal one. It is found that the efficiency of optimization of the law of motion, in comparison with known studies, at inertial load increased from 44 % to 47-48 %, and at application of active torque decreased from 44 % to 9-10 %.
Les établissements ruraux du Moyen Âge en Sologne bourbonnaise et Limagne septentrionale (Auvergne), VIIe-XIVe siècles, d’après les données de l’archéologie préventive
Authors: Charmoillaux Julie , Gaime Sébastien , Grélois Emmanuel , Cabanis Manon , Gauthier Fabrice , Vernet Gérard
Published: June 2024

This article details our thinking on rural settlements in a part of the Auvergne region, studied as part of a collective work completed in 2016 and published in 2019 ; this article sets out the main conclusions. The corpus is made up of 27 sites located in two distinct geographical and historical entities : Greater Limagne and Bourbon

Sologne. 13 sites were occupied during the early Middle Ages and 14 in the late Middle Ages. The curve of creations is fairly regular during the early Middle Ages. However, in the late Middle Ages, a peak is visible in the 12th and 13th centuries. The correlation between the nature and chronology of occupation seems to pay witness to a phenomenon in which production was reorganised and capital was concentrated. The end of the 14th century, a period in which a great number of settlements were abandoned, could indicate the end of this economical and topographical reorganisation of farms.
Les établissements du haut Moyen Âge et leur environnement au coeur du Nogentais (Aube)
Authors: Godard Céline , Guicheteau Antoine , Marchaisseau Vincent , Mahé-Hourlier Nadine
Published: June 2024

The Nogentais, area located in the northwestern department of Aube, is characterized by the impact on its physical geography of the Seine valley and its bed in braids. The territory is the subject since the 1990s of many preventive archeology operations. At its heart, more than a thousand hectares have been explored, indicating the absence of early medieval settlement in the alluvial plain. However, on its margins, the density of rural settlements seems rather important. The quantitative and
Genèse, évolution et désertion de Missignac (Aimargues, Gard), villa des Ve-XIIe siècles
Authors: Maufras Odile , Rochette Marie , Thomas Benjamin , Donat Richard , Duchesne S. , Thomas Nicolas
Published: June 2024

Missignac is a villa (a small farming compound) from the early Middle Ages located in the coastal plain of the Languedoc, at a regional crossroads and on the site of a significant settlement from the Antiquity. The recent preventive archaeological dig conducted on the site concerned a large outlying storage area and the heart of the medieval settlement. Indeed, it revealed this settlement’s origin and development from the second half of the 5th century to the start of the 13th century. Circa 450, the seat of the ancient domain was no longer – or not the only – place of residence for the people working the land. Some of them settled in the surrounding area, in a very loose cluster of farms, linked to two routes initially, then to a third from the 8th or 9th century. The settlement of this era encompassed several grave areas located alongside a route and within the limits of certain inhabited plots. In the 10th century, a church was built in an open area, bordering the densest part of the built-up area, at the corner of two major routes. Progressively, a concentration of dwellings emerged, but also graves that were nonetheless organised in to independent sectors until during the 11th century. The villa

took on the form of a tightly-knit but open village centre, without ramparts but with a small surrounding ditch. In the following century, the church was rebuilt while the many grave areas disappeared and were reorganised into a single cemetery next to the church. From the second half of the 12th century, settlement declined and the village was perhaps deserted before 1200, although burials
Artisanat potier et ensilage groupé aux portes de Montpellier : le site de Verchamp du VIIe au XIIe siècle (Castelnau-le-Lez, Hérault)
Authors: Carme Rémi , Guionova Guergana , Cloarec-Quillon Anne
Published: June 2024

La fouille préventive réalisée en 2014 dans le cadre de l’extension de la ZAC Eureka à Castelnau-le-Lez a occasionné la découverte d’un important site médiéval. Pour cette période, les lieux sont investis dès les VIe-VIIe siècles, dans un paysage humanisé et structuré depuis l’Antiquité. Mais c’est visiblement à partir des VIIIe-IXe siècles que l’occupation s’intensifie avec la transformation du lieu en un vaste quartier d’ensilage et la création d’une petite aire funéraire. Le caractère exceptionnel du site réside toutefois dans la mise au jour d’un complexe artisanal comptant 65 fours de potiers et 4 fours de tuiliers. Les éléments de datation disponibles indiquent que la production de terre cuite s’étale sur une longue durée, entre le VIIIe siècle et le XIIe siècle. De par son ampleur et sa chronologie étendue, ce site potier constitue un ensemble totalement unique pour la période, à l’échelle du territoire régional et sans doute au-delà.
A l'origine du village roussillonnais : Taxo-d'Avall, premiers éléments d'enquête
Authors: Puig Carole , Durand Sylvain , Castella Rachel , Cazes Jean-Paul , Carozza Jean-Michel , Cloarec-Quillon Anne , Ros Jérôme , Vaschalde Christophe , Sneed-Verfaille Camille , Guinaudeau Nicolas
Published: June 2024

Between 2011 and 2013, two consecutive archaeological operations conducted around the village of Taxo-d’Avall (Argelès-sur-Mer, Pyrénées-Orientales) provided notable insight into the formation of Roussillon villages and the make-up of the surrounding lands. The first intervention, referred to as Taxo-Les Gavarettes, revealed remains covering a broad period stretching from the 6th to 11th century. They present a variety of forms (necropolis, dwellings, combustion structures), but it is especially the uncovering of a large silaging area, boasting more than 2000 structures, that is the main point of interest of this discovery. The second operation, Taxo-l’Orangeraie, covers a longer timescale running over into the late Middle ages. Adjacent to the medieval walls, a rather loosely defined occupation related to craft activity (a smithy) was discovered, dating from between the second half of the 6th century and the 11th century. The late Middle Ages is characterised by the construction of a large defensive ditch and the creation of a cemetery outside the ramparts. Although these operations only provide a partial vision of how the village of Taxo-d’Avall formed, a sequencing of occupations revealed by these two operations is proposed. Based on this inventory, the formation of this village can be characterised by underlining both the elements that fall within a traditional pattern defined by historiography and the distinctive features uncovered.
Merxheim - « Obere Reben » (Haut-Rhin). Découverte d’un nouvel ensemble funéraire du premier Moyen Âge
Authors: Barrand-Emam Hélène , Chenal Fanny , Fischbach Thomas , Mauduit Amandine
Published: June 2024

A rescue excavation in the municipality of Merxheim

(Alsace, Haut-Rhin) uncovered a portion of a funerary ensemble dating from the early Middle Ages, made up of 92 burial graves, used from the middle of the 6th century BC to the second half of the 10th century BC. The burial practices unveiled on the site do not particularly vary from those usually observed in other community necropolises already known to be from the period in Alsace. Nevertheless, specific or even unprecedented cases deserve to be presented. Our work will focus on the issues of biological and social identities, stores of sword scabbards and finally post burial re-interventions.
Données nouvelles sur le groupe de Bize : les apports du site de Pourgobi à Montbrun-des- Corbières (Aude)
Authors: Guilaine Jean , Vaquer Jean , Gandelin Muriel , Aymé Régis , Carrère Isabelle , Garnier Nicolas
Published: June 2024

Le Bizien centré sur le bassin de l’Aude suscite des interrogations sur sa chronologie et sa signification par rapport au Chasséen. La découverte du site de Pourgobi a fourni un ensemble représentatif qui autorise une reprise de l’argumentation sur son identité et son positionnement. Les éléments d’industrie lithique taillée comportent des lamelles en silex blond bédoulien du Vaucluse qui ont été débitées sur des nucléus chauffés après une mise en forme de type conique. Il s’agit de caractères technologiques observés en Provence occidentale vers la fin du 5e millénaire BCE. Les céramiques comportent quelques types figurant comme un héritage du Chasséen ancien et d’autres formes semblables à celles du Chasséen méridional classique ou récent. La décoration des vases a une fréquence élevée (48,57 %) et elle concerne la plupart des formes. L’abondance des éléments décorés décomptés par technique et par motif permet des comparaisons objectives en fréquences relatives avec les autres principales séries biziennes. Les décors linéaires sont très largement dominants à Pourgobi avec une fréquence de 80,71 %. Les motifs à champ hachuré ou losangé ne représentent que 15,71 %. Le traitement statistique en AFC des unités décoratives de Pourgobi par rapport à celles d’autres séries suggère qu’une évolution a pu se produire au sein de ce faciès. Ces considérations typologiques tendent à renforcer l’hypothèse d’un positionnement du Bizien au début du Néolithique moyen 2 (circa 4100-3900 BCE). Les datations au radiocarbone obtenues à Pourgobi ne confirment que partiellement ce positionnement car un résultat se situe au Néolithique final et les deux autres, éventuellement acceptables mais à faible résolution, placent l’occupation dans le premier tiers du 4e millénaire et donc dans la même période que celle de l’épanouissement du Chasséen classique correspondant au style chasséen d’Auriac.
Analyse technotypologique des hachereaux et autres macro-outils à tranchant transversal de Menez-Dregan I (Plouhinec, Finistère).
Authors: Capdevielle Juliette , Ravon Anne-Lyse
Published: June 2024

Les problématiques liées aux technologies de débitage de grands éclats, supérieurs à 10 cm de longueur, figurent parmi les pistes actuelles de recherche visant une meilleure caractérisation des systèmes techniques acheuléens d’Europe de l’Ouest, dont la diversité demeure complexe à appréhender. L’étude du hachereau en particulier, macro-outil sur éclat lié à un phénomène technique clairement identifiable, constitue un angle d’approche privilégié pour aborder le thème des traditions techniques des groupes humains. Dans le Massif armoricain, l’utilisation de grands éclats comme supports de certains macro-outils sur le site de Menez-Dregan I interpelle, compte tenu de la rareté de ce phénomène dans les industries du nord de l’Europe. L’analyse technotypologique de 12 macro-outils à tranchant transversal, parmi les 154 000 artefacts lithiques récoltés sur ce site majeur, permet d’identifier cinq hachereaux, trois pièces bifaciales à tranchant transversal et quatre pièces dont le technotype demeure indéterminé. Les rares hachereaux de Menez-Dregan I apparaissent dans des couches corrélées aux SIM 10 à 8. Ils sont tous du type 0 de J. Tixier, au tranchant transversal situé à l’intersection de la face ventrale de l’éclat-support et d’une surface naturelle, et présentent une retouche restreinte souvent limitée à une élimination du bulbe de percussion. Des similitudes technologiques sont perceptibles entre ces pièces localement atypiques et les hachereaux issus d’industries rattachés à l’Acheuléen ibérique dans le sud-ouest du continent, inscrits dans la même fenêtre chronologique. Cependant, la part des déterminismes environnementaux, mais aussi les aspects morphofonctionnels de ces outils, demandent à être étayés davantage pour apporter des éléments tangibles quant à d’éventuels traits technoculturels communs.
Données récentes concernant les conditions de conservation des sites du Paléolithique final et du Mésolithique dans la moyenne vallée de l’Oise
Authors: Paris Clément , Ducrocq Thierry , Coussot Céline , Coutard Sylvie
Published: June 2024

Depuis une dizaine d’années, les découvertes de gisements du Paléolithique final et surtout du Mésolithique se multiplient dans la moyenne vallée de l’Oise. Elles interviennent dans un contexte jusqu’ici lacunaire et donnent une image plus dynamique de la vallée durant le Tardiglaciaire et surtout la première partie de l’Holocène. Ces nouvelles données autorisent un premier état des lieux des différents contextes sédimentaires et de leurs implications dans la conservation des gisements. Ainsi, cinq contextes sédimentaires ont été distingués : les « montilles » sableuses, les zones aux altitudes plus basses (couche unique), les chenaux secondaires, le lit mineur de l’Oise et enfin les paléoberges de la rivière. Ils ont pour point commun un bilan sédimentaire très faible à nul durant la première partie de l’Holocène. Les conséquences sur les gisements préhistoriques sont des mélanges fréquents et peu de matière organique préservée notamment la faune. Ces faits restreignent les études et les interprétations. Cependant, les dernières informations recueillies permettent d’engager une première réflexion sur la représentation et l’implantation des gisements appartenant à différentes périodes du Paléolithique final et du Mésolithique. Le Paléolithique supérieur n’est pour l’instant retrouvé que sur des buttes de sable souvent mal conservées. Il conviendra de confirmer l’intérêt de ces populations pour ces contextes sableux.
Un site d’habitat du Néolithique ancien à Vénizel "Le Creulet" (Aisne)
Authors: Ilett Michael , Allard Pierre , Chartier Michèle , Gransar Frédéric , Hachem Lamys , Hamon Caroline , Naze Yves , Salavert Aurélie
Published: June 2024

This article presents the results of excavation in 2007 and 2009 of an early Neolithic settlement located on the alluvial plain of the river Aisne at Vénizel " Le Creulet" (Picardy, France). The discovery of this site provides additional evidence for a dense pattern of early Neolithic settlement in the part of the Aisne valley between Soissons and Missy-sur-Aisne. A total of nine pits were excavated. Three are lateral pits associated with an incomplete houseplan. The other pits may have belonged to houses whose post-holes have not been preserved. As all these features were found on the edge of the excavated area, the original size of the settlement is unknown. The pit fills produced quite low quantities of finds. The analysis of the flint industry indicates two periods of occupation on the site, the earlier dating to the very end of the Seine basin Linear Pottery sequence and the later to Blicquy/ Villeneuve-Saint-Germain. The main distinguishing traits here are blade modules and raw materials. The small amount of pottery evidence is in accord with this chrono-cultural attribution. The faunal data point to consumption mainly of caprines in the earlier occupation, and cattle in the later period. These trends, which are well attested on other sites in the region, fit the dating proposed on the basis of the flint industry. The pits also contained fragments of sandstone macrolithic tools, together with some manufacturing or maintenance flakes. Soil samples from pit fills were analysed for charcoal and carbonised plant remains. Around thirty charcoal fragments were identified (oak, Maloideae, alder, elm), as well as three wheat grains.