bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation of alkaline earth element substituted Lanthanum Ferrite nanoparticles and it’s characterization
Authors:   Research Department of Physics, V.O.Chidambaram College, Thoothukudi628008, Tamilnadu, India, Saseetha S. , Nagarajan M. ,   Research Department of Physics, V.O.Chidambaram College, Thoothukudi628008, Tamilnadu, India, Subha S. ,   Research Department of Physics, V.O.Chidambaram College, Thoothukudi628008, Tamilnadu, India, Rani K. A. ,   Department of Physics, SSDM College, Kovilpatti-628501, Tamil Nadu, India, Vella Durai S. C. ,   PG and Research Department of Physics, Sri Paramakalyani College, Alwarkurichi, Tenkasi-627412, Tamil Nadu, India (Affiliated to Manonmanium Sundaranar University, Tirunelveli - 627018)
Published: January 2024

Pure Lanthanum Ferrite (LaFeO3) nanoparticles and Lanthanum Magnesium Ferrite (LaMgxFe1-xO3) nanocomposites have been prepared by the sol-gel auto-combustion method. The structural and morphological properties were investigated by X-ray diffraction (XRD), Scanning electron microscopy (SEM) and energy dispersive X-ray (EDAX) spectroscopy. Powder XRD studies revealed that the samples are pure orthorhombic perovskite crystals with a size of around 20–50 nm. The FT-IR spectra of pure and composites was confirmed the formation perovskite structure. It has been discovered that composites material functions as an electrode in supercapacitors after its electrical characteristics have been examined by galvanostatic charging and discharging (GCD), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS) with a 2 M KOH electrolyte.
Zastosowanie nowych technologii podczas pracy nad wzbogacaniem słownictwa języka obcego (na przykładzie wybranych portali edukacyjnych i aplikacji mobilnych)
Authors:   Uniwersytet Rzeszowski, Instytut Neofilologii, Katedra Rusycystyki, Dźwierzyńska Ewa
Published: January 2024

The purpose of the article is to analyze the possibilities of using new technologies in learning foreign language vocabulary. The analysis is based on both educational portals, mobile applications and survey data. The possibilities of using selected online tools to increase students’ motivation and improve their performance in foreign language learning are pointed out. The main difficulties of integrating these tools in the teaching and learning process were also pointed out. It was concluded that the systematic use of some educational portals and mobile applications, both in and out of the classroom, during individual work will allow students to increase their learning efficiency and help them memorize language vocabulary.
Niemieckie nazwiska obywateli Fromborka z 1693 roku na litery M-Z
Authors:   Uniwersytet Warmińsko-Mazurski w Olsztynie, Wydział Humanistyczny, Katedra Języka Niemieckiego, Guz Marzena
Published: January 2024

This paper analyses the origin of German surnames to determine their structure and identify derivative names (structuralist method). It also seeks to determine the language phenomena within the sphere of vocalism and consonantism, and note the presence of selected dialects and the effect of foreign languages to determine whether the surnames under study were still present in Warmia in the 18ᵗʰ century. Surnames with a single motivation include those derived from first names, nicknames, the place of origin, the place of residence and one’s profession or office occupied. The majority of the names in Frombork under analysis are non-derivative. The linguistic phenomena involved include delabialisation, vowel exchange, contraction, and consonant doubling for no reason. Approximately 36% of the names did not survive to the 1770s.
Лiнгвокультурний типаж одеситка в сучасному культурному просторi України
Authors:   Одеський нацiональний унiверситет iм. I. I. Мечникова, Фiлологiчний факультет, Кафедра прикладної лiнгвiстики, Яроцька Галина
Published: January 2024

The linguoocultural type “Odesa woman”, which became the object of this study, was singled out due to the existence of the myth about Odesa as a traditionally “cosmopolitan” commercial city with its postulated “Odesa nationality” and the presence of the socalled “Odesa coine” or “Odesa language”. The study found that the attitude towards the Odesa woman as a stereotypical image is gradually losing its prototypical features, and this type will most likely undergo significant transformations in the future. These transformations concern, first of all, the language of communication; currently the image embodies a bilingual person (Ukrainian-Russian), with a more pronounced Ukrainian component. However, “Odesa Koyne” is not typically used in the everday speech of Odesa women. The sphere of its use is fiction and humorous works. We believe that “odesianness” is a historical discursive construction based on the existence of large and small narratives. These narratives are now gradually being destroyed and replaced by new ones, in which attention is focused on the formation of the “Ukrainianness” of the linguistic and cultural type ‘odesitka” (odesa-woman).
Семантичнi трансформацiї лексем звiльнення та агресiя (на матерiалi української, росiйської та нiмецької мов)
Authors:   Uniwersytet w Białymstoku, Wydział Filologiczny, Katedra Językoznawstwa Slawistycznego, Кондратенко Наталiя , Завальська Любов ,   Одеський нацiональний унiверситет iменi I. I. Мечникова, Фiлологiчний факультет, Кафедра прикладної лiнгвiстики
Published: January 2024

The article analyzes the structure of lexical meaning and the use of the tokens liberation and aggression in Ukrainian, Russian and German as markers of semantic opposition. Definitions of explanatory dictionaries of the Ukrainian, Russian and German languages served as material for the analysis. To illustrate the peculiarities of usage, the contexts of modern Ukrainian, Russian and German media discourse are involved. The lexeme zvìl’nennâ / osvoboždenie / Befreiung is polysemic in the analyzed languages. It was found that the lexeme agresìâ / agressiâ / Aggression is presented in Ukrainian, Russian and German languages with different actualization of the seme and different seme composition. In the Ukrainian language, the transformation from “unprovoked armed attack” to “forceful intervention” in the relations between two states is recorded; in the Russian language it is about “attack” and forceful actions against “foreigners; and in the German language a military attack on foreign territory is foreseen.
Narrative medicine – a tool to reshape your ESP class
Authors:   Uniwersytet w Białymstoku, Wydział Filologiczny, Katedra Językoznawstwa Porównawczego i Stosowanego, Łukaszyk-Spryszak Aleksandra
Published: January 2024

Narrative medicine has become an independent field of medical humanities, which applies the practical principles of analyzing literature in the context of interpreting patients’ personal narratives in order to improve patient-centered care and restore contemporarily fragile doctor-patient relationships. Although its practical application can already be observed in a growing number of doctor-oriented courses supported by many academic centers around the world, its didactic potential as an innovative approach to teaching English as a foreign language, especially to medical students, seems yet unnoticed. The aim of this article is to provide a broader insight into the main original concept of narrative medicine, yet with particular attention being drawn to its application as an innovative practical didactic tool to transform the ESP courses attended by Polish students of medical faculties.
Leksemy z wtórnym znaczeniem metaforycznym w rosyjskojęzycznej prasie Łotwy
Authors:   Uniwersytet w Białymstoku, Wydział Filologiczny, Katedra Językoznawstwa Slawistycznego, Szymula Robert
Published: January 2024

The article presents the results of an analysis of the potential impact on readers of lexemes with secondary metaphorical meanings (source domain THEATER) used in articles published in the Russian-language press published in Latvia (in 2012–2022). The study was conducted on the basis of linguistic material taken from socio-political press articles published in five Latvian newspapers, both from print and electronic versions. The study, conducted with the help of semantic and contextual analysis, showed that the authors of the analyzed texts use theatrical metaphors that can evoke negative connotations in readers, but examples of the use of such lexemes are not numerous. The emotional impact on the audience is limited by the fact that the metaphorical meaning of the analyzed units is often an already obliterated meaning.
Методика обучения русскому ударению в польской аудитории – история и перспективы
Authors:   Uniwersytet Śląski w Katowicach, Wydział Humanistyczny, Instytut Językoznawstwa, Woch Joanna
Published: January 2024

The article focuses on two main methods of teaching word stress to Polish students: imitation and the grammar method. Imitation, based on repeating words, phrases and sentences with correct word stress, is the dominant method of teaching Polish students. However, this method does not seem to be effective in acquiring orthoepic habits since it is not based on characteristic features of the Russian accentual system. The research indicated that it is necessary to compare and analyse Russian and Polish accentual systems to eliminate mother tongue interference to master correct Russian pronunciation. Therefore, using the grammar method in teaching Russian word stress is a necessity. This method allows for teaching rules of stress in Russian because it uses word formation characteristics and the morphemic structure of words. It is the only effective way of learning accentual patterns as it can develop the habit of conscious accentuation based on structured rules and regularities, and improve and correct Russian pronunciation in general.
The Unveiling the Faces of Corruption in Education: A Systematic Review of Various Forms of Corruption across Countries and Educational Levels
Authors: As Sayfullooh Istiqomah , Rusdinal Rusdinal , Hadiyanto Hadiyanto , Olivia Nesta , Marhadi Agung
Published: January 2024

In recent years, researchers have paid close attention to educational corruption. While numerous studies have investigated various forms of corruption in education, there has been a dearth of research that spans a wide range of countries and educational levels. Based on the findings of the previous decade, this study attempted to fill this research gap by undertaking a systematic review of various forms of corruption in education across countries and educational levels. Using a systematic literature review technique, this study assessed the prevalence of various forms of corruption in education, with a focus on bribery as the most commonly reported form across coutries. Furthermore, it showed that higher education institutions gained greater research focus regarding corruption and exhibited a diverse variety of corrupt activities compared to primary and secondary education. This review emphasised the significance of future research on corruption in elementary and secondary education, particularly on types of corruption other than bribery and mutually beneficial connections. This study contributed to the existing literature by enhancing our understanding of the many types of corruption in education and their prevalence across countries and educational levels. It also provided policymakers and educators with insights into how to establish effective tactics for eliminating corruption in education systems.
Deprofessionalization of teachers’ occupation: sociological analysis
Authors: Litvinaitė Jūratė
Published: January 2024

Drawing on various sociological theories on the characteristics of work, profession, and service, the paper analyses the validity of the classification of teachers’ occupation as a profession, raising the question of what teaching is if not a profession. It also explores the trend of the changing social position of teachers’ professional activities in contemporary contexts. The introductory part of the article reveals the sociological content of the concepts of profession, work, and service. It explains what features allow these concepts to categorize various occupations. Based on Abbott’s (1988) analysis of the development of professions, it identifies the processes taking place in all professions causing them to lose their privileged status in society. The loss of status of professions is analysed through the concepts of professionalization, deprofessionalization, bureaucratization, and proletarianization. The characteristics of these processes are revealed based on various authors.Based on theoretical studies, the article analyses the results of empirical research conducted in the spring of 2023. The research ‘Teachers’ daily professional activities’ was designed using the photovoice method. The study involved 47 teachers with different professional experiences from different regions of Lithuania. The study revealed that teaching in contemporary contexts is experiencing all the symptoms of deprofessionalization and bureaucratisation, as well as intensive proletarianization of teaching: teachers are subjected to various forms of exploitation; alienation from the school and pupils is increasing, and teachers are being dehumanized. The article concludes with the discussion statements.
Grapefruit flavonoid naringin protects v79 cells against the vinblastine-induced DNA damage in vitr
Authors: Jagetia Ganesh Chandra
Published: January 2024

Vinblastine an antimitotic agent is used to treat hematological malignancies and in combination cancer chemotherapy. Vinblastine produces second malignancies in the survivors which can be reduced/prevented in cancer patients by intervention with natural products. Naringin a grapefruit bioflavonoid was tested for its chemoprotective activity in cultured V79 cells. The V79 cells were treated with 1, 2, 5, 10, 25, 50, 100, and 200 µg/mL of naringin 1 h before exposure to 10 µg/mL of vinblastine. The DNA damage was evaluated by micronucleus assay at 22 h after vinblastine exposure in mononucleate, binucleate, and trinucleate cells. Vinblastine treatment increased the frequency of micronuclei significantly in both the mononucleate and binucleate V79 cells whereas different concentrations of naringin significantly reduced the formation of vinblastine-induced micronuclei. A maximum reduction in micronuclei formation was recorded at 200 µg/mL naringin in both mononucleate and binucleate cells. The determination of cell proliferation indicates that naringin treatment impacted the cell proliferation, especially at 2 to 25 µg/mL which increased at 200 µg/mL in both the naringin and Naringin+Vinblastine groupsgroup as indicated by a rise in binucleate and trinucleate cell numbers. The present study indicates that naringin protects the V79 cells against vinblastine-induced DNA damage indicated by significant attrition in micronuclei formation and 200 µg/mL naringin was highly effective.
Decoding complex mediastinal masses in children: insights from a clinical case
Authors: Rivera Samanta Maldonado , Samaniego Alexander Lozano , Lozano Raymi Alvarado , Campoverde Joel Luzuriaga , Mascote Rolando Castillo
Published: January 2024

Introduction: In the pediatric population, any mediastinal mass represents a diagnostic challenge considering that most of these lesions have been associated with neoplasms. Advanced imaging modalities such as computed tomography (CT) have proven essential for the identification and characterization of mediastinal lesions. Objective: To explore the general nature of nerve cell tumors with a radiological approach. Clinical case: Three-year-old girl with respiratory symptoms with a mass in the mesogastrium of approximately 3 cm. Abdominal ultrasound reports a complex mass. Chest X-ray evidenced radiopacity in the left hemithorax. Plain contrast-enhanced CT of the chest and upper abdomen shows a solid, contrast-enhancing mass with a volume of approximately 387 cc. Discussion: In the posterior mediastinum, nerve cell tumors are generally grouped into three categories: peripheral nerve, paraganglia, or autonomic ganglion cells, whether sympathetic or parasympathetic, with an incidence of 70%, 25%, and 1-2%. respectively. Conclusion: Posterior mediastinal lesions in pediatric patients should focus on the study of lymph node tumors due to their high incidence, in addition, they should be evaluated using objective radiological characteristics to avoid complications and consequently take prompt therapeutic action.
Stone sawing machine at the Temple of Artemis in Jerash, Jordan
Authors: González Genaro , Herrera Blas
Published: January 2024

Finishing materials play an important role in architectural design. Since ancient times, claddings made of noble materials (mainly stone) convey grandeur. Clearly, there was a technology to transform quarry stones into slabs using stone sawing machines. An example of this comes from the excavation work carried out in 1930 at the Temple of Artemis in Jerash (6th century AD). The archaeologists found a facility which was classified as a stone sawmill. The efficiency of such machines, their construction method and their resistance characteristics have not been studied as yet. This paper aims to define such parameters for the stone sawing machine located in Jerash.
The use of the pile integrity test (PIT) to detect anomaly such as reinforcement exposure in short caissons
Authors: Souza Tiago de Jesus , Querelli André
Published: January 2024

This paper aims to verify the effectiveness of the pile integrity test (PIT) for evaluating the presence of anomaly in short caisson foundation elements, more specifically reinforcement exposure due to an execution problem during concreting. The foundation elements tested belong to the expansion of the structure of an electricity substation in the municipality of Itá, state of Santa Catarina, Brazil. In general, the PIT is not commonly used for caissons, due to the surface irregularities occurring along the shaft in this type of foundation. The obtained results showed that the PIT can promote assertiveness and safety when assessing the integrity of these foundation elements, as later confirmed at the site by excavating the problematic elements and performing visual inspection. Thus, the results may validate the use of the PIT as a tool for optimizing the executive control of cast-in-place foundations, even though a Brazilian technical standard on the use of the low strain integrity test for this purpose is still lacking.
Development of a HTS application for the Colombian aircraft manufacturing industry
Authors: Hernández-Ramírez Carlos Arturo , Rodríguez-Toro Diana Marcela , Rivera-Ramirez Oscar Andrés , Medina-Montero Sebastian Camilo
Published: January 2024

The Colombian manufacturing industry's diversity and capacity for high-quality production are creating opportunities for increased participation in the aeronautical market. To tap into this potential, companies must adapt processes to adhere to global quality and safety standards. This research led to the creation of a specialized software tool capable of managing documents and risks linked to safety analysis during aeronautical product certification and manufacturing. By identifying local industry needs and essential risk-tracking features, the software was tailored to suit Colombian practices. This tool enables data management and risk monitoring throughout the manufacturing process, promoting standardization and centralization of risk-related information while meeting certification requirements and alleviating constraints tied to implementing a new risk monitoring system. Despite possessing the necessary potential, the Colombian manufacturing industry has yet to adopt the essential tools for certifying products under international standards in the aeronautical sector.
Use of construction and demolition waste for the production of paving stones for pedestrian walkways
Authors: Becerra-Rojas José Santos
Published: January 2024

The main problem of our cities is the lack of treatment and final disposal of construction and demolition waste (CDW), which, accompanied by a lack of knowledge, becomes a major problem. Likewise, a city in the north of Peru (Cutervo) is not immune to the problematic reality experienced in the country and worldwide, since the lack of CDW management projects has generated the formation of informal dumps. The main objective of this research is to determine the technical and economic feasibility of using CDW for the production of pedestrian pavers, given that it includes measurements of the physical and mechanical characteristics to be analyzed. It is concluded that the use of CDW in the production of paving stones is feasible, from the economic and technical aspects, incurring a reduction in cost.
Bidirectional DC-AC converter for photovoltaic solar system in Home Electrical Networks
Authors: Bautista-López Diego A. , Patarroyo-Gutierrez Luis D. , Mantilla-Arias Maria P.
Published: January 2024

This paper presents the results obtained in the design, implementation and testing of a bidirectional CSI (Current source inverter) converter, which is capable of delivering and taking power from the grid to charge a 72 V battery bank. This converter is sized within a photovoltaic solar system designed for homes in the city of Tunja, based on real data to estimate the average consumption of a typical home in the "Cooservicios" sector of the city, proposing two ways of working the system, one to obtain a constant average consumption and another in which the total consumption is zero. The converter is implemented with all its components, digital and power stages, using for the control a TMS 320F28377S microcontroller from C2000 family, of Texas Instruments. The implementation meets specifications of: bidirectional operation as an inverter and as a rectifier, output power of 469 W, efficiency around 80%, highlighting the considerably high value required for the input inductance of 0.3 H that causes losses in the system.
RADIOPHARMACEUTICAL RENAL DOSIMETRY USING SNYDER / CRISTY-ECKERMAN / SEGARS ANTHROPOMORPHIC REPRESENTATIONS
Authors: Vasquez Marcial V. , Vega Héctor R. , Acuña Santos L. , Rodriguez Huber E. , Vasquez Marcela A. , Flores Hipólito F. , Tantaquispe Santos M.
Published: January 2024

Absorbed doses to the kidneys of adult patients are estimated using the Medical Internal Radiation Dosimetry (MIRD) methodology and the anthropomorphic representations of Snyder, Cristy-Eckerman, and Segars. The radiopharmaceuticals 99mTc(DTPA), 99mTc(DMSA) and 99mTc(MAG3) are used to perform renal function studies in adults. The dose results found for these radiopharmaceuticals  and their representations will allow the exploring of their dosimetric impact on each other. The relative difference in total renal dose by using the Snyder/Segars and Cristy-Eckerman/Segars anthropomorphic-representations was 3.6% and 0.3% when using 99mTc(DMSA); 2.9% and 3.0% when using 99mTc(MAG3); 5.0% and 1.5% when using 99mTc(DTPA). Regardless of the radiopharmaceutical selected, the substitution of Segars phantoms for Snyder or Cristy-Eckerman phantoms does not reflect significant changes in the estimated absorbed dose to the kidneys.
INFLUENCE OF DIMENSION AND MAGNETIC INTERACTIONS ON ANNIHILATION AND NUCLEATION FIELDS OF PERMALLOY NANODISKS USING MICROMAGNETIC SIMULATIONS
Authors: Urcia-Romero Silvana R. , Vigo-Cotrina Helmunt E. , Jáuregui-Rosas Segundo R.
Published: January 2024

Permalloy can exhibit magnetic vortex configurations depending on their dimensions and geometry, being of great interest due to potential applications in data storage and for cancer treatment. This work focuses on the effects of perpendicular uniaxial anisotropy, dimensions of permalloy nanodisks, and magnetostatic interactions on the annihilation and nucleation fields of magnetic vortices by means of micromagnetic simulations. Nanodisks with different diameters were evaluated, considering the effect of anisotropy generated by a platinum substrate for isolated nanodisks of 20 nm thickness. The effect of magnetostatic interactions for different arrays of identical nanodisks and a 10 x 10 array with random diameters from a normal distribution was also evaluated. The results show that the annihilation and nucleation fields are influenced by the perpendicular uniaxial anisotropy. The higher the anisotropy, the more the annihilation field decreases, and the nucleation field increases, thus favoring the monodomain magnetic configuration. It was also shown that the magnetic interaction between the nanodisks and the lattice geometry led to a variation of the annihilation and nucleation fields. The magnetostatic interaction in the lattice leads to a collective rotation of the magnetic moments, so that the closing of the magnetic flux occurs randomly in a series of nanodisks minimizing the energy.
INFECTIOUS COMPLICATIONS, ASSOCIATED WITH MULTI-DRUG RESISTANT BACTERIA IN PATIENTS FOLLOWING HEMATOPOIETIC STEM CELL TRANSPLANTATION – RESISTANCE MECHANISMS AND THERAPEUTIC OPTIONS
Authors: Niyazi D.
Published: January 2024

Individuals undergoing hematopoietic stem cell transplantation are a peculiar group of patients in whom the risk of developing infectious complications is very high. Various groups of antimicrobials are used for prophylaxis and therapy, but the growing resistance among bacterial isolates is about to derail all attempts to prevent severe infectious complications. The aim of this review is to briefly present the different types of multidrug-resistant bacteria causing infections in these patients, as well as to introduce the most common resistance mechanisms and treatment options for this type of infections.
RARE CASE OF PLACENTA PREVIA ISTHMICOCERVICALIS, DIAGNOSED 40 HOURS AFTER CESAREAN SECTION. CASE REPORT
Authors: Lazarov S. , Lazarov N.
Published: January 2024

Placenta previa is characterized by the abnormal placenta overlying the endocervical os. It is one of the most feared adverse maternal and fetal-neonatal complications in obstetrics.
The condition is frequently complicated by placenta accreta or increta. Women with placenta previa have often an increased risk of postpartum hemorrhage. The risk factors for placenta accreta are previous uterine surgery, as cesarean sections (CS)., dilatation, curettage, the advanced maternal age, multiparity etc.
A 31-year-old woman, P.T.S., who went in for delivery with moderate bleeding from the genitals and regular labor. Childbirth with cesarean section was performed (C.S), because of intrapartum asphyxia of the fetus. A female fetus was born, weighing 3270 g. Finding that the placenta is located on the posterior uterine wall and descends to the cervical canal. Immediately after CS, profuse bleeding from the uterus begins. After a control revision of the uterine cavity, cervical placenta was established. An emergency total hysterectomy without the adnexa was performed. It must be known that any bleeding during the third trimester of pregnancy, low blood counts and worsening general conditions of the woman should be considered as a warning of possible placenta previa isthmicocervicalis.
Simulation of 2×2 multimode interference coupler
Authors:   Perm State University, Moskalev Dmitrii N.
Published: January 2024

The results of 2×2 multimode interference coupler simulation obtained by beam propagation method and the semi analytical eigenmode decomposition method were compared. The evaluation of the semi-analytical model accuracy was performed by the comparison of the power in output waveguides. The maximum relative error was 4 % (relatively the result obtained by beam propagation method). In this way, the semi-analytical mode could be used for fast prototyping of multimode interference couplers and could be built-in the systems of circuit-level simulators.
Development of a noninvasive method for determining blood viscosity
Authors:   Institute of Control Systems of Azerbaijan National Academy of Sciences, Rzayev Abbas , Rasulov Sakit ,   Azerbaijan State Oil and Industry University, Rzayev Elshan ,   Educational and Surgical Clinic of Azerbaijan Medical University
Published: January 2024

The aim of the study is to develop a new method for noninvasive determination of dynamic viscosity. In the developed method, the methods of mathematical modelling and the laws of rheology, mechanics, biomechanics and human physiology were used. It has been shown that an increase in blood viscosity leads to functional failure of various organs and tissues, disorders of the coronary and cerebral circulation. As a result of the analysis, it was revealed that blood can be considered as a colloidal suspension in which particles of erythrocytes and platelets are suspended, and the viscosity of such a colloidal system in microcirculation does not obey the Newtonian law. At the same time, the main factors that significantly affect blood viscosity include: blood pressure of hematocrit, platelet count, absolute amount of fibrinogen proteins and microglobulins, and lipoprotein concentration. A mathematical model has been obtained for determining the viscosity of the colloidal dispersed blood system, considering the concentration of the dispersed phase (blood cells) and the structure formation of blood; a model for determining the thickness of the boundary layer of blood corpuscles adsorbed on the inner surface of blood vessels is proposed and the mechanism of blood structure formation associated with the surface charges of erythrocytes and platelets is shown.
Ground reaction forces during stair climbing in trans-femoral amputee
Authors:   Poznan University of Technology, Gawłowska Aleksandra , Zagrodny Bartłomiej ,   Lodz University of Technology
Published: January 2024

Conducting a gait analysis allows us to make an accurate diagnosis to document the progress of rehabilitation, as well as properly adapt the prosthesis to the patient. This study focuses on examinating the differences between a choosen healthy person (OZ) and a choosen person after an amputation (OPA) with enucleation in the knee joint in case of climbing stairs (ascent and descent). Two male volunteers of similar age (20-22 years) and height (180-185cm) participated in the study. Biomechanical analysis was carried out using three prosthetic sets differing in knee joints (1. Blatchford Mercury, 2. Guardian, 3. Ottobock 3R80) and prosthetic foot ( 1. Össur Vari-Flex XC Rotate, 2. SACH, 3. Blatchford Elite 2). The staircase consisted of four steps (height 170mm, width 320mm). During the experiment, an optoelectronic motion capture system and force plate were used. Obtained results showed limited efficiency of ascending and descending stairs by OPA, compared to OZ. The most important difference between a healthy person and an amputee is their gait pattern, step-over-step and step-by-step gait, respectively. The value of the vertical component of the ground reaction force when climbing stairs is similar for both subjects. The analyzed parameters differ depending on the prosthetic set used by OPA. During the descent, the OPA can implement the step-over-step pattern, but only using the prosthesis set I (everyday use). Then, the forces acting on the sound limb during the stance phase are much higher than for OZ, which creates the possibility of overloading the given limb. The conducted biomechanical analysis draws attention to the importance of proper selection of the prosthesis for the patient.
Study of the dental zirconium implant surface in a nano-scale using an atomic-force microscope
Authors:   Institute of Mechanics of Lomonosov Moscow State University, Dzhalalova Margarita , Stepanov Alexander ,   LLC "Marty Dent"
Published: January 2024

The influence of various surface treatments of zirconium implants on the adhesion strength in the connection “individual milled transdental implant – cement – hard tooth tissues” was investigated. As analogs of such implants, we used pins made of zirconium dioxide, individually made for prepared previously extracted teeth, in combination with the most effective Fuji-1 and Multilink-N cements. To assess the quality of the formed "cleanliness" of the surface, the experiments were carried out in two stages. At the first stage, the specimens were processed by a sandblasting machine under a pressure of 2 atmospheres by aluminum oxide powder with a grain size of 50, 100 and 250 μm. The treatment was carried out once in one direction, longitudinally to the axis of the implant. At the second stage, the same specimens were processed again in the same mode, but in two directions. The processed specimens were studied in a probe nanolaboratory (Troitsk, Russia) using an atomic force microscope (AFM). Roughness parameters were measured in nanometers on each sample from three images of a scanning probe microscope (SPM). Analysis of the SPM images revealed that the roughness of the specimens is higher when processed with larger grains. The results of the study showed that a single sandblasting by zirconium dioxide is quite enough to improve the adhesive properties of the implants both to the fixing cements and to the patient's bone tissue.
Ergonomic assessment of sport skies based on analysis of athlet’s hemodynamics at loading test using tonometry and electrocardiography
Authors:   V.A. Belyi Metal-Polymer Research Institute of National Academy of Sciences of Belarus, Shil’ko Serge , Kuzminsky Yury , Bondarenko Konstantin ,   F. Skoryna Gomel State University, Bogdanova Natalya ,   Sukhoi State Technical University of Gomel
Published: January 2024

Occlusive tonometry and resting electrocardiography are widely used in medicine to diagnose and monitor the state of the cardiovascular system. In recent years, software and hardware implementations of these methods for fitness and sports training have been developed thanks to the advent of portable and mobile gadgets. The paper presents the results of an analysis of the athlete’s hemodynamics in real time according to the data of tonometry and electrocardiography performed synchronously during the three-stage load-speed testing “rest – load – recovery”. It is shown that application these diagnostic methods, one-dimensional biomechanical modeling of hemodynamics and statistical dependencies obtained experimentally allow us to monitor very important and informative indicators of energy efficiency of human movement (oxygen consumption, dynamics of oxygen debt, shared distribution of aerobic and anaerobic energy sources). In fitness, sport training and competition conditions such monitoring has been realized only with the use of complex and expensive devices. In this regard, it is proposed to use the mobile software and hardware complex developed by the authors and biomechanical criteria (heart rate before and after exercise, oxygen consumption, oxygen debt) characterizing the energy consumption of an athlete, including the quality rating of sports equipment, in particular, cross-country skis. The selection of skis adequate bionically is based on a statistical analysis of the results of load-speed testing of a group of athletes.
Study of motion amplitudes in large joints of upper and lower limbs and spine joints when using industrial exoskeletons
Authors:   Research Institute of Labor Medicine  named after N.F. Merzov, Geregey Andrey , Bondaruk Evgeniya , Malakhova Inga ,   Research Institute of Labor Medicine  named after N.F. Merzov, Efimov Albert , Takh Vladimir ,   Laboratory of robotics, Sberbank, Sotin Aleksandr ,   Perm National Research Polytechnic  University
Published: January 2024

One of the world trends of Industry 4.0 is the introduction of exoskeletal technologies into production processes. Manufacturers of industrial exoskeletons designed to reduce the negative impact of the work process on the human locomotive apparatus provide for the redistribution of the external load on the human body by means of various technical solutions. However, there is currently no uniform methodology for assessing the operational safety of exoskeletons. A significant biomechanical factor contributing to the safety of industrial exoskeletons as promising means of personal protection of the locomotor apparatus, is possibility to work without significant restrictions on the volume of movements. In this connection, the development of a methodology for objective quantification of the influence of structural and mass dimensions of industrial exoskeletons on the biomechanics of human movements is a topical task. This article presents the results of the measurements of the amplitude of movements in the large joints and joints of the spine, when performing the tests for flexion-extension, adduction-abduction and lateroflexion. The testing of volunteers was carried out on the clinical base of Research Institute of Labor Medicine. The tests were performed both without the use of industrial exoskeletons (Group I) and with their application (Group II). The influence on the biomechanical parameters of volunteer movements by the structural characteristics of the industrial exoskeleton “Exochair” and two different models of the industrial exoskeleton «Exoatlant» was investigated. Parameters of movements of segments of the human body were measured with the help of inertial measuring sensors of the software and hardware complex «Biomechanika Trust-M». Quantitative indicators have been identified which show the limitations of movements caused by the operation of different models of industrial exoskeletons. Thus, the use of the exoskeleton “Exochair” in deep seating limits the flexion in the hip joint by 67.1%, in the knee joint by 56.1%, in the lumbar thoracic spine by 61.9%, and practically does not affect the flexion in the shoulder joint. The first model of the exoskeleton “Exoatlant” limits the amplitude of movements in the hip joint by 41.2% at flexion and by 74.5% at extension. At the same time, the second model limits the abduction of the shoulder joint by 20.5%, and in the lumbar thoracic spine limits forward flexion by 17.3%, rearward extension by 50.6%, bending to the right by 46.4%, and bending to the left by 40.3%.
Tendencje w dawnym nazewnictwie kopalń. Rekonesans
Authors: Horyń Ewa
Published: January 2024

This article is an introduction to research in the field of historical nomenclature related to the mining environment. Names of mines will be analysed from a cultural perspective. Historical works on mining and mining culture, monographs of individual mines, tourist materials, guides, as well as information available online, have been helpful in establishing or supplementing information about the collected names. In the article, the most important naming trends visible in the examined onimic resources will be presented on the basis of selected examples. The collected names of mines are a testimony to mining activities and also, constitute an important part of the cultural and civilisational heritage of Polish mining tradition.
Book Review of The State and Dominant Groups in the Economy: The Approach of Institutional Political Eceonomy by Anna Ząbkowicz
Authors: Pietrzak Michał , Chlebicka Aleksandra
Published: January 2024

Book review of  The State and Dominant Groups in the Economy: The Approach of Institutional Political Eceonomy [published in Polish as Państwo wobec grup dominujących w gospodarce – perspektywa instytucjonalnej ekonomii politycznej] by Anna Ząbkowicz. By combining the achievements of political economics and institutional economics, Anna Ząbkowicz proposed the term ‘institutional political economics’ in the title. The book reflects on the state–economy relation, including the perspective synthetically combining these two approaches. Ząbkowicz aimed to study the dominant entities in the economy, and the state’s role in relation to them. Ząbkowicz claimed that the entities have enough power to impose their agenda on their environment, more often including the state. The state is subject to pressure from various interest groups, including big business, by building key institutions for the functioning of the economy and implementing public policies. In consequence, the modern economy results largely from a game between the state and said groups. In the perspective adopted by Ząbkowicz, what matters is the relationship between power and dependence, and the institutionalisation of the economic and political process. This approach differs significantly from the neoclassical mainstream in economics, making the reviewed book a very interesting read. The review will comprise two parts. The first one will discuss Ząbkowicz’s main ideas. The second one will evaluate the monograph by listing its merits and polemicizing with some of its theses.
A Study on the Impact of SCM Information Integration Capabilities of Chinese Electronics Manufacturers on Partnerships and Risk Management Performance: Focusing on the Moderating Effect of Smart Customer Relationship Management
Authors:   Korea Association for International Commerce and Information, Kim Chang-bong , Wang Ya-wen
Published: January 2024

In the recent global business environment, the development of 4th Industrial Revolution technology has profoundly changed the way companies operate and the market competitive landscape. In a rapidly changing era, smart customer management is identified as one of the key elements of corporate success, and especially in the field of supply chain management(SCM), the realization of customer relationship management through improvement of information integration capabilities is important. In this context, the purpose of this study is to reveal the relationship between SCM information integration capabilities, partnerships, smart customer relationship management, and risk management performance for electronics manufacturing companies in Shandong Province, China.
The target of this study is an electronics manufacturing company in Shandong Province, China that uses SCM. To collect appropriate data, member lists such as the Shandong Province Foreign Economy and Trade Enterprise Association and the Shandong Province Electronics Association were used. For the empirical analysis, SPSS Ver. 28.0 was used for factor analysis, and Process Macro Ver. 4.2 was used for mediation and moderation effect analysis., As a result of the analysis, it was found that SCM information integration capability has a positive effect on risk management performance, and partnership mediates this relationship. And the electronics manufacturing company's smart customer relationship management showed a positive moderating effect on the relationship between partnerships and risk management performance. This study is significant in that it identified the importance of SCM information integration capabilities and identified the role of interaction with partners and smart customer relationship management.
Spór o użyteczność teorii inteligentnego projektu dla nauki
Authors:   Uniwersytet Zielonogórski, Sagan Dariusz
Published: January 2024

According to intelligent design theory, certain biological and cosmic phenomena were designed by an intelligent being, which could be just as well natural and supernatural. This design is to be scientifically detectable in basically similar fashion as in the case of the effects of the purposeful activity of man. However, critics pose an objection that unscientific character of this theory is discernible in that it is not useful for science because it does not inspire new scientific research and thus it is stopping the progress of science. It is claimed that this theory could easily explain any phenomenon, referring to the category of „intelligent design”, and in this case the word „explanation” has ironic overtone. It is indicated also that proponents of intelligent design theory do not publish the results of their research in renowned scientific journals. This objection could be answered in twofold way: methodological and sociological in character. According to the first answer, science does not depend solely on inspiring new research but also on offering a new view of the known facts, and the design conclusion could be made and justified independently of whether it enables to gain knowledge of its maker or method of its accomplishment. The second answer is that development of novel theories is in large degree hampered by the resistance of the defenders of an orthodox theory, and of established understanding of science, who basically do not display tolerance for revolutionary theories. The mechanisms such as the procedure of reviewing of articles or financing of research projects system, controlled by the defenders of status quo, are of great importance in that case. The chances to receive the grants which could facilitate and accelerate the development of a new, going against the status quo theory, as well as to publish articles inspired by this theory in recognized scientific journals are minuscule, and the change of such situation requires the change of the preference pattern in the world of science.
Rola kapitału kulturowego w uzyskiwaniu pozycji na rynku pracy. Przyczynek empiryczny
Authors:   Uniwersytet Mikołaja Kopernika w Toruniu, Maleszewska Marta
Published: January 2024

The aim of this paper is to analyse selected conditions of professional achievements of young polish employees with higher education degrees. The number of graduates has raised significantly in the last twenty years and they are employed not only as the professionals, but also on the positions, which do not demand academic qualifications. The author makes the hypothesis that the amount of cultural capital (in Pierre Bourdieu comprehension) has influence on the position on the labour market. On the basis of the qualitative research, there are the premises to acknowledge the influence of cultural capital on professional achievements. The conclusion from the analysis of polish graduates’ biographies is that occupational position of the employees equipped equally in cultural capital in the institutionalized state (diploma) may depend on the competences acquired during socialization process, which refers to the cultural capital in the embodied state. The paper presents a typology of young employed graduates in terms of their work expectations. The typology reveals how the primary socialization and acquired cultural capital influence the young employees’ attitude to their work and career – if they are preservative and focused on safety guarantees, or creative, looking for their professional development and self-fulfillment.