bluuebunny/crossref_metadata_2025 huggingface dataset:
Lead weights of the Selitrennoe settlement: typology and classification
Authors:   Astrakhan State University. Tatishcheva str., 20a, Astrakhan, 414056, Russian Federation, Kazakov Pyotr V. , Pigarev Evgeniy M. ,   The Educational and Scientific Archaeological and Ethnological Center. Mari State University. Ryabinin St., 8, Yoshkar-Ola, 424000, Mari El Republic, Russian Federation; Institute of Archaeology named after A. Kh. Khalikov, Tatarstan Academy of Sciences. Butlerov Str., 30, Kazan, 420012, the Republic of Tatarstan, Russian Federation
Published: December 2024

The article deals with the complex of lead mushroom-shaped weights found at different times at the Selitrennoye settlement (Sarai al-Jedid). The collection is represented by 296 pieces of items of various shapes and sizes. The article provides a metrological analysis of products, identifies the design features of weights, which make it possible to determine types and propose their classification. When comparing the available types, the possibility of their division by the place of production (local and imported) is suggested. Also, this paper raises the question of the functional purpose of these subjects; the versions proposed by colleagues on this subject earlier are considered. The materials studied in the article allow us to support the opinion of colleagues about the functional purpose of lead mushroom-shaped items, namely, their use as weights in weaving production.
Trade in floodplain medieval settlements of the Lower Kama region in the XII–XIV centuries (based on the finds of metal mirrors)
Authors:   Kazan State Institute of Culture. Orenburgsky Trakt St., 3, Kazan, 420059, Russian Federation, Rudenko Konstantin A. , Kazakov Evgeniy P. ,   Institute of Archaeology named after A.Kh. Khalikov, Academy of Sciences of the Republic of Tatarstan. Butlerov St., 30, Kazan, 420012, Russian Federation
Published: December 2024

The article is dedicated to the study of trade relations in the late Volga Bolgaria and the Bolgar region of the Golden Horde in the XII–XIV centuries. The basis for this study was a collection of fragments of metal mirrors found on the settlements, located in the floodplain of the Kama River and its tributaries. These are the settlements on Semenovsky Island, settlements – Komintern III, Laishevo, Murzikha. All these finds are from the collapsed cultural layer, as these archaeological sites were destroyed by the Kuibyshev reservoir from the middle of the XX century and now they do not exist. A total of 17 pieces of fragments of metal mirrors of XII–XIV centuries from the Museum of Archaeology of the Institute of Archaeology of the Tatarstan Academy of Sciences were investigated. The largest number of these artifacts are 6–7 cm in diameter and undecorated. This group of mirrors also includes items with geometric images. These mirrors are associated with nomads. Mirrors with complex compositions, for example, running wild animals, as well as copies of Chinese mirrors with dragons and wise men, are rare. Mirrors were brought from Bolgar, where some of them were made. But some of the items, especially those of nomadic traditions, were made locally – at settlements in the floodplain. Not only whole mirrors were brought, but also fragments – for jewelry craftsmen who used them to add to alloys. It should be noted that the composition of mirrors at each of the considered settlements was different.
Breast decorations from the burials of the Bolshiye Pamyaly burial ground of the XVIII – first half of the XIX century
Authors:   The Educational and Scientific Archaeological and Ethnological Center. Mari State University. Ryabinin St., 8, Yoshkar-Ola, 424000, Mari El Republic, Russian Federation, Voronov Vsevolod V.
Published: December 2024

The article for the first time publishes materials from the Bolshiye Pamyaly Mari burial ground, discovered in 2022. The paper studies the sul’gams, one of the numerous groups of decorations in the burial set of the burial ground without mounds of the XVIII – midXIX centuries. The relevance of the topic is due to the fact that the depicted patterns can trace the trends of cultural evolution and, at the same time, the continuity of forms with earlier ones. The typology of breast decorations, the basis of which are sul’gams, and their arrangement are considered. The classification of sul’gams uses the method of considering them as parts of breast decorations, considered by T.B. Nikitina according to their functional purpose. Statistical analysis by type indicates a significant predominance of the type II in the burial ground, for functional purpose - decorations. Sul’gams are most often found in burials in the number of one piece, but there are also two. They are not found with male bones. The burial ground is characterized as a monument of Mari culture. In some cases, the shapes and ornamentation of the sul’gams find analogies in the products of neighboring Chuvash and Mordvinian cultures. This decoration in the materials of the burial ground is distinguished by the variability of shapes and patterns.
Paisley-shaped antler onlays with fantastic beasts from Veliky Novgorod: issues of functional and stylistic attribution
Authors:   Saint Petersburg Stieglitz State Academy of Art and Design, Solyanoy lane 13, St. Petersburg, 191028, Russian Federation, Tochilova Nadezhda N. ,   Yaroslav the Wise Novgorod State University, Bolshaya St. Petersburgskaya st. 41, Novgorod the Great, 173003, Russian Federation
Published: December 2024

The article deals with two paisley-shaped antler onlays with fantastic beast drawings. These artifacts were dated to the end of the XIII – first half of the XIV centuries and were found during the archaeological excavations in Novgorod. These finds were made with a high degree of artistic skill and have a number of similar stylistic features, which allow them to be considered in the context of common pictorial tradition. These beast images have stylistic analogies among items of Novgorod antler products of this period, which were created under the influence of Golden Horde art traditions. Another problem deals with the attribution of these objects. According to historiography, paisley-shaped onlays attributed as a decoration of saddles. For the present among the archaeological materials of Novgorod, there are no known finds of saddles with similar decoration preserved in situ. Only similar finds from a nomadic burial nearby the village of Philia (XIII– XIV centuries) make it possible to adhere to this hypothesis.
Bronze spoked wheels from Sanxingdui and ancient indian myths about Garuda
Authors:   Novosibirsk State University, Pirogov St. 1, Novosibirsk, 630090, Russian Federation, Varenov Andrey V.
Published: December 2024

The article presents a review and analysis of bronze wheels with fi ve spokes each and anthropomorphic statue of the Bronze Age Sanxingdui culture spread in the Sichuan province of the PRC. The author calls “statues” life-size human figures with a height of at least 50 cm (but not their parts, such as heads), assembled from pre-cast parts. He suggests calling the smaller sculptures, cast at one time, “statuettes” . The design features of bronze anthropomorphic statues of Sanxingdui allow us to synchronize the time of their creation with the existence of bronze masks of types A and C, as well as bronze “spirit trees” No. 2 and No. 1, since the same technological methods were used in their production. Bronze wheels could be related to the skirt-wearing human fi gure with talons holding in them two snake-like creatures with bird’s heads. Both those wheels and the statue could be interpreted with the help of ancient Indian myths about Garuda. Recent fi nds in JK8 sacrifi cial pit from Sanxingdui were also taken into account in the article.
Testiküler mikrolityazisli hastalarda varikosel sıklığının değerlendirilmesi
Authors: Tuzcu Göksel , Ateş Erhan , Özsoy Çağatay , Varol Aral , Kol Arif , Gök Mustafa
Published: December 2024

Objective: Testicular microlithiasis (TM) is a rare condition characterized by incidental parenchymal calcifications seen during scrotal ultrasonography (USG). This condition is often asymptomatic. It appears as multiple small calcifications within the seminiferous tubules, and its ethology is unknown. Some studies have reported that TM can be seen along with other testicular pathologies, such as varicocele. This study aimed to determine the frequency of varicocele in cases with TM.
Material and Method: Patients aged 15–80 who were referred to our clinic for scrotal USG examination for infertility, pain, or suspicion of a palpable mass between January 2017 and October 2024 were retrospectively evaluated. Patients with TM formed the study group. Patients without TM who were referred for the same reasons between 01/08/2024 and 15/10/2024, were considered the control group. Demographic data such as age, weight, height, and body mass index (BMI) were recorded. Scrotal USG images were retrospectively reviewed using the Picture Archiving and Communication System (PACS). Varicocele evaluation was performed in both groups. The severity of varicocele in affected patients was graded and recorded.
Results: A total of 99 patients were evaluated. Of these, 58 were in the study group and 41 were in the control group. The median age of the study group was 30 years (range: 15–72), while the median age of the control group was 28 years (range: 16–69). The frequency of varicocele was 29.3% (n=17) in the study group and 19.5% (n=8) in the control group. In the TM group, 88.2% (n=15) of the varicocele cases were left-sided, while 13.8% (n=2) were bilateral. Among the 17 cases in the study group, 2 had grade 1 varicocele (11.8%), 3 had grade 2 (17.6%), 6 had grade 3 (35.3%), 5 had grade 4 (29.4%), and 1 had grade 5 (5.9%). In the control group, 8 cases with varicocele were found, with 1 case at grade 1 (12.5%), 2 at grade 2 (25%), 3 at grade 3 (37.5%), and 2 at grade 4 (25%), but no grade 5 varicocele was observed.
Conclusion: TM is an incidental, asymptomatic, and rare testicular parenchymal microcalcification seen on USG. Further comprehensive studies are needed to better understand the relationship between TM and other testicular diseases, including varicocele. Regular USG monitoring and careful evaluation for other testicular anomalies are recommended for patients with TM.
Key words: Doppler ultrasonography, scrotum, testicular microlithiasis, ultrasonography, varicocele
Üniversite öğrencilerinde fertilite sağlığı bilgi durumunun araştırılması
Authors: Yılmaz Sinan Havva Şeyma , Kızılkaya Beji Nezihe
Published: December 2024

OBJECTIVE: This study was conducted to investigate the level of fertility health knowledge of students studying at a foundation university in Istanbul.
MATERIAL and METHODS: It was conducted with 495 students studying at the Faculty of Health Sciences of a foundation university in Istanbul. The study data were collected by face-to-face questionnaire method using sociodemographic information form and Fertility Health Knowledge Scale (FHQS).
RESULTS: When the data obtained as a result of the study were evaluated, it was found that 91.7% of the participants were female, 8.3% were male, they had an average height of 165.51 cm and weight of 60.31 kg, the majority of them lived with their families (75.6%), did not smoke and drink alcohol (81% and 74.3%, respectively) and were not sexually active (93.7%). Participants received an average of 109.89±13.56 points from Fertility health information production, and an average of 17.11±6.26 correct answers were determined from 30 sections. It was determined that the number of correct answers given by the sexually active participants to the scale questions was lower than those who were not sexually active (p<0.05). When the participants’ answers were evaluated, it was understood that although they knew the effect of smoking on fertility, they had insufficient knowledge about the effect of passive smoking on general fertility, the effect of sleep patterns on female fertility, and the effect of intense exercise and nutrition on male fertility health.
CONCLUSION: As a result, it was determined that the awareness of the university students participating in the research about fertility health was not at the desired level. In order to raise awareness about fertility health, it is a social necessity to provide healthy lifestyle behaviours and to provide information about the factors affecting fertility health by providing trainings, especially in young adulthood.
Keywords: fertility, fertility health, health education, young adult
Examination of the psychometric properties of the “Masculinity in Chronic Disease Inventory” in men admitted to infertility outpatient clinic
Authors: Tarsuslu Bedia , Yaman Özge , Durat Gülgün , Aygin Dilek , Gökçe Ahmet
Published: December 2024

OBJECTIVE: Male infertility negatively affects men’s perception of masculinity and their health. This study aimed to investigate the psychometric properties of the Turkish version of the Masculinity in Chronic Disease Inventory (MCD-I) in men admitted to an infertility outpatient clinic.
MATERIAL and METHODS: The study was conducted with 208 males. Data were collected after the language validity of MCD-I was ensured. The interclass correlation test was used in the implementation of repeated tests; the Spearman correlation coefficient was employed to analyse the relationship between numerical variables, exploratory and confirmatory factor analyses were used for validity, while Cronbach’s alpha values, item-total correlation and split-half analysis were used for reliability.
RESULTS: The inventory comprised 22 items and five subscales, which explained 56.52% of the total variance. All the factor loads were >0.30 in both exploratory and confirmatory factor analyses. The confirmatory factor analysis determined that all the fit indices were >0.85, and the root mean square error of approximation was <0.05. The Cronbach’s alpha value for the whole scale was 0.86, and all five subscales were found to vary between 0.52 and 0.83.
CONCLUSION: This study found that the Turkish version of MCD-I is a reliable and valid measurement tool for men who applied to policlinic for complaints of infertility.
Keywords: infertility, masculinity, men, psychometric properties, reliability, validity
Cinsel sağlığın değerlendirilmesi: Yaşanan sorunlar ve çözüm önerileri
Authors: Demirci Gülcan , Başgöl Şükran , Koç Zeliha
Published: December 2024

Sexual health is a crucial component of overall well-being, encompassing not only the physiological health of the sexual organs but also the quality of sexual life and the dynamics of interpersonal relationships. According to the World Health Organization, sexual health is defined not merely as the absence of disease or dysfunction but also as the ability to experience a satisfying and healthy sexual life. Therefore, evaluating sexual health is of significant importance on both an individual and societal level. A comprehensive assessment of sexual health’s physical, psychological, and social dimensions can only be achieved through appropriate steps taken by healthcare professionals in sexual health evaluation. This review presents effective methods used in the assessment of sexual health, the challenges encountered in this evaluation, and proposed solutions for healthcare professionals. Based on the literature, this review aims to provide a valuable resource for improving the sexual health assessment process and enhancing the quality of sexual health services.
Keywords: challenges, recommendation, sexual health, sexual health evaluation
Evaluation of non-invasive diagnostic methods in male lower urinary tract symptoms using pressure-flow studies
Authors: Ergin İsmail Emre , Saygın Hüseyin , Öztürk Abuzer , Velibeyoğlu Arslan Fatih , Kıraç Emre , Asdemir Aydemir , Korgalı Esat
Published: December 2024

OBJECTIVE: This study aims to determine the importance of non-invasive diagnostic parameters such as intravesical prostatic protrusion (IPP), bladder wall thickness, prostate volume, and uroflow in the detection of bladder outlet obstruction using pressure-flow studies.
MATERIALS and METHODS: Pressure flow studies were performed on patients who presented to the outpatient clinic with lower urinary tract symptoms. Patients were divided into two groups, those with and without obstruction, according to the Bladder Outlet Obstruction Index (BOOI) parameter. Differences between the two groups were evaluated in terms of prostate volume, IPP, Bladder Wall Thickness (BWT), uroflow peak flow rate (Qmax), post-void residual urine volume and Bladder Outflow Obstruction Number (BOON) parameters.
RESULTS: There was a significant difference in prostate volume, IPP, BWT, uroflow peak flow rate, post-void residual urine volume and BOON parameters between the obstructed and non-obstructed groups. In the ROC analysis performed to predict the obstructed patient, the ideal cut-off value for prostate volume was determined as 71.5 ml, for IPP 10.5 mm, for BWT and 5.3 mm. Bladder outlet obstruction index parameter was positively correlated with prostate volume, IPP, BWT, residual volume and IPSS. There was a negative correlation with Qmax.
CONCLUSION: In the ROC curve for predicting obstructed patients, IPP showed a higher AUC (area under the curve) compared to prostate volume and BWT, indicating IPP’s superior predictive value for obstruction. Uroflow parameters are also significant predictors, albeit less so than IPP. Increasing obstruction scores correlate with higher levels of prostate volume, IPP, uroflow peak flow, and IPSS, providing insights into the severity of obstruction.
Keywords: bladder outlet obstruction, benign prostate enlargement, non-invasive diagnosis
Networking initiatives as a means of promoting the development of teachers’ civic competence
Authors: Melenets Liudmyla , Matviichuk Oksana , Petroshchuk Natalia , Savchenko Svitlana , Сherpak Yurii , Poliakova Olena
Published: December 2024

The aim of the article is to evaluate the influence of networking initiatives on the improvement of the level of teachers’ civic competence. The results of the analysis revealed that the average scores in all components exceed 50%, which indicates a generally high level of digital competence among Ukrainian teachers. The highest average score is observed in the Communication and Cooperation component (71.5%), and the lowest – in the Creativity and Problem Solving component (59.3%). The obtained results confirm the importance of improving teachers’ civic and digital competencies. In particular, a direct relationship between the level of civic competence and participation in networking initiatives, as well as between civic competence and participation in networking initiatives was found. According to the obtained results, networking initiatives have a positive effect on improving the teachers’ civic competence. The use of distance educational technologies provides continuous civic education.
Introducción al Monográfico: "Movimientos Migratorios México-Estados Unidos"
Authors: Lizárraga Salas Frambel , Peraza Noriega Brianda Elena
Published: December 2024

El tema de la relación bilateral entre México y Estados Unidos es complejo y con altibajos. Su estudio y análisis se puede abordar desde diferentes ángulos, contextos y perspectivas. Uno de los asuntos más complicados entre ambas naciones es el tema migratorio. La situación económica adversa y el alto índice de desempleo y mano de obra barata en México impulsan a los ciudadanos de este país a salir de sus comunidades de origen y cruzar la frontera entre México y Estados Unidos, conseguir un empleo, mejorar su calidad de vida, enviar remesas a sus familias y lograr su "sueño americano".
Asimismo, en algunos artículos nos enfocamos al caso particular del estado de Sinaloa, ubicado al Noroeste de México, ya que es un estado que se ha caracterizado por ser la "cuna del narcotráfico" en México, así como ser una de las zonas más violentas del país, por lo que muchos ciudadanos sinaloenses deciden migrar hacia Estados Unidos para escapar de la violencia que existe en su comunidad, así como de mejorar su situación económica.
Con este monográfico mostramos una realidad migratoria de gran complejidad, no resuelta desde el plano político, ni humanitario. Con un incierto futuro sobre el que es necesario una reflexión profunda.
The symbolism of red and blue colors as a reflection of the national mentality of Koreans (based on the material of Korean proverbs)
Authors: Mukabenova Zhanna Alekseevna , Artaev Sergei Nikolaevich , Gadanov Sergei Sergeevich , Mandzhiev Ayur Dzhangarovich
Published: December 2024

This article discusses two chromatic colors – red and blue, which are included in the system of basic colors according to the ancient Chinese theory of Yin – Yang and the five elements. The subject of our research is the above two colors in Korean traditional culture. The linguistic and cultural analysis of color meanings in Korean proverbs makes it possible to determine the universal and specific features of the linguistic picture of the world, representing the historical, cultural, and social experience of one people accumulated as a result of its development. The research centers on Proverbs, idioms with colors 붉다 [bulkta] / 홍 [hong] (紅) (red), 푸르다[p ureuda] / 청 (靑) [cheong] (blue). In this article, we use the names of colors of Korean / Chinese origin, since there are different spellings of color meanings in proverbs. By studying color as an important category of cognition of the world, one can see how it affects people's social, religious, moral, emotional and interpersonal relationships. The work uses a descriptive method necessary for the classification and generalization of linguistic material, linguistic and cultural analysis to interpret the information obtained, revealing the mentality, traditions and customs of the people. The scientific novelty of the work lies in the systematic description and definition of the symbolism and meaning of color in culturally significant texts in the Korean language. The analysis of the color values "red" and "blue" in the Korean tradition, namely in the paremias, made it possible to identify their harmonious combination as one whole organism corresponding to the Yin –Yang system, as well as to highlight their contrasting position. This study reveals the peculiarities of the national linguistic picture in terms of reflecting the Korean people's ideas about color as a universal category, but having its own specifics. The results of this study will help to form a stable understanding of the mental beliefs that influence the scenario and mechanism of thinking, and as a result, the national culture, which determines the originality of the mental and linguistic organization of national consciousness.
Predefined-Time Attitude Tracking Robust Control of Flexible Spacecraft Under Multiple Disturbances
Authors: Deng Xingting , Wang Beichao , Zhang Ziyang , Li Shuang
Published: December 2024

To overcome external environmental disturbances, inertial parameter uncertainties, actuator failures and input saturation, and the structural vibration of flexible appendages, predefined-time attitude tracking based on sliding-mode control for flexible spacecraft is proposed. First, a rotation matrix is adopted for spacecraft attitude description to avoid an unwinding phenomenon. Next, to enhance the robustness of attitude control, a radial basis function neural network is applied to estimate and compensate the lumped disturbances in attitude tracking. Then, based on the predefined-time stability, an adaptive sliding-mode controller is designed to ensure that the maximum convergence time of the system can be arbitrarily configured by setting simple parameters and independent of initial states. The system stability is further proved by the Lyapunov theory. Finally, numerical simulations indicate that the proposed controller can achieve high-precision convergence more rapidly compared to the existing finite-time attitude tracking controller. This work provides new references for high-precision attitude tracking of flexible spacecraft by predefined control with multidisturbance suppression.
Aerodynamics-Driven Morphing Control and Flight Test for Compound Flexible Multibody Aircraft
Authors: Zhu Entong , Zhou Zhou , Wang Guichen
Published: December 2024

The compound multibody aircraft, created through flexible wingtip docking of multiple unit aircraft, not only capitalizes on high aerodynamic efficiency, but also holds the potential for in-flight reconfiguration. This study addresses the challenges of controlling the inherently unstable morphing process through aerodynamic surfaces, eliminating the need for additional driving mechanisms and offering advantages in structural simplicity. In-flight controllable morphing was achieved, significantly elevating the mission flexibility and environmental adaptability of the Compound Flexible Multibody Aircraft. A multibody dynamics model with 10 degrees of freedom is developed, and a modified control allocation strategy is proposed to enhance morphing control capability. The control structure placing the configuration controller and the overall attitude controller in parallel is developed to simultaneously guarantee the morphing and trajectory control task. Finally, a successful morphing flight test is implied, in which the configuration commands are determined according to the attainable configuration envelope. This paper presents a control method for compound flexible multibody aircraft that accommodates varying numbers of connections and provides solutions for the stable flight and aerodynamic morphing of such aircraft, expanding their usage and offering insights for the control of more general flexible aircraft.
Scaling and Transition Effects on Hollow-Cylinder/Flare Shock/Boundary-Layer Interactions in Wind Tunnel Environments
Authors: Threadgill James , Hader Christoph , Singh Ashish , Tsakagiannis Vasilis , Fasel Hermann F. , Little Jesse C. , Lugrin Mathieu , Bur Reynald , Chiapparino Giuseppe , Stemmer Christian
Published: December 2024

A comprehensive investigation into the flow over a hollow-cylinder and [Formula: see text] flare has been conducted at Mach 5 with transitional Reynolds numbers. Experiments of two similar models have been conducted in LT5 at the University of Arizona and R2Ch at ONERA. Considerable differences in reattachment behavior were observed from infrared thermography measurements indicating that the reattachment in LT5 was approximately twice as far from the flare base as observed in R2Ch. Supporting simulations have been performed at the University of Arizona and the Technical University of Munich. Various effects are reviewed: Mach numbers and wall temperatures modulating boundary-layer development, 3D relief effects due to differences in normalized cylinder diameters, leading-edge bluntness effects, and the impact of freestream disturbances. Simulations show that modulation of freestream noise amplitude can scale the interaction size to match experiments. Experimental investigation of the respective noise environment between the two facilities showed that despite exhibiting similar noise magnitudes, they differed considerably in frequency content, suggesting that additional parameters are required when quantifying wind tunnel freestream noise conditions. These discrepancies are believed to lead to greater seeding of shear layer instabilities in R2Ch, resulting in faster transition, consistent with the experimentally observed smaller recirculation bubble.
Rapid Aerodynamic Prediction of Swept Wings via Physics-Embedded Transfer Learning
Authors: Yang Yunjia , Li Runze , Zhang Yufei , Lu Lu , Chen Haixin
Published: December 2024

Machine-learning-based models provide a promising way to rapidly acquire transonic swept wing flow fields but suffer from large computational costs in establishing training datasets. Here, a physics-embedded transfer-learning framework is proposed to efficiently train the model by leveraging the idea that a three-dimensional flow field around wings can be analyzed with two-dimensional flow fields around cross-sectional airfoils. An airfoil aerodynamics prediction model is pretrained with airfoil samples. Then, an airfoil-to-wing transfer model is fine-tuned with a few wing samples to predict three-dimensional flow fields based on two-dimensional results on each spanwise cross section. Sweep theory is embedded when determining the corresponding airfoil geometry and operating conditions, and to obtain the sectional airfoil lift coefficient, which is one of the operating conditions, the low-fidelity vortex lattice method and data-driven methods are proposed and evaluated. Compared to a nontransfer model, introducing the pretrained model reduces the error by 30%, whereas introducing sweep theory further reduces the error by 9%. When reducing the dataset size, less than half of the wing training samples are need to reach the same error level as the nontransfer framework, which makes establishing the model much easier.
Impact of carbon quantum dot nanoparticles on combustion, performance and emissions in diesel/microwave-assisted canola oil biodiesel blend
Authors: Özgören Yaşar Önder , Uyumaz Ahmet , Solmaz Hamit , Aksoy Fatih , Calam Alper , Babagiray Mustafa , Şahin Seda , Aksoy Laçine
Published: December 2024

Usage of biodiesel produced with conventional transesterification methods decreases the conversion of biodiesel from vegetable oil. Microwave-assisted production enables higher reaction efficiency, providing better conversion of vegetable oils. It also causes to obtain poorer characteristics of biodiesel, such as higher viscosity and density. It was aimed to improving the properties of biodiesel with microwave-assisted production and mixing it with nanoparticles to investigate the performance, combustion and emission characteristics. The influences of nanoparticle addition (carbon quantum dot) on engine performance, combustion and emissions have been analyzed in a direct injection CI engine. A single cylinder water cooled CI engine was used in the experiments. Experiments were performed at 4.12, 9.61, 15.10, 20.60 Nm and 2200 rpm. Canola biodiesel was obtained via the microwave-assisted transesterification method and mixed with diesel at the ratio of 20% (B20). 50, 100 and 150 ppm nanoparticle were added to the obtained B20 and tested in a CI engine. Specific Fuel Consumption (SFC) raised by 2.03%, 4.83%, 4.40% and 1.69% with B20, B20CQD 50 ppm, B20CQD 100 ppm and B20CQD 150 ppm respectively compared that diesel at 15.10 Nm. Remarkable reduction was found on CO, HC with B20CQD 50 ppm, B20CQD 100 ppm and B20CQD 150 ppm according to B20. In addition, an impressive reduction was realized on soot emissions with the usage of nanoprticle addition. But, NOx increased using fuel blends. As a result, the usage of quantum dot nanoparticle improved the poor properties of canola oil biodiesel and test fuels were used easily without modification in a diesel engine.
Rate of penetration prediction for large-diameter offshore drilling for wind farm structures
Authors: Abbasov Abbas , Abbasov Tural , Merey Sukru
Published: December 2024

It is essential to shift towards sustainable energy in a world with increased awareness of global warming and climate change. There is an anticipated increase in offshore wind farms in the upcoming years. There is a need to explore new locations in tougher soil conditions for the wind farm developments as the sweet spots or technically easy spots have been taken. The rock strength must be overcome in the new locations of concern. Due to pile buckling the conventional pile driving technique becomes an undesirable solution. An alternative method that can complete wind farm infrastructure efficiently in challenging soil and rocks is drilling. In addition, there are some regions where pile driving becomes unviable due to the rules associated with maximum noise levels. The cost of the project increases significantly in the case of the use of noise mitigation measurements. Again, drilling can be considered as an alternative solution, because as a result, the noise generated during installation decreases significantly. The important role in the total drilling process is the drilling phase itself, and it can easily be equal to more than half of the total pile installation time. It is necessary to have a very decent prediction of the drilling rate for the installation of a large number of foundation piles, especially since it is important to have this information during the tender phase of a project. The currently available drilling rate models are based on empirical evidence and tend to be specific to certain drilling methods in each type of rock. This study aims to better predict the drilling rate which will be applicable for different amounts of large-diameter drilling for various rock and soil types. Significant importance will be given to the analysis of conventional top-hole drilling performance. Investigation of top hole and deep hole drilling bit design will be conducted and its applicability to soil drilling for windfarm installation will be tested.
Biologics to the Rescue in Case of Stevens–Johnson Syndrome/Toxic Epidermal Necrolysis
Authors: Patil Sharmila , Gautam Manjyot , Choudhary Fiza Mohd Rafiq , Israni Anmol Vivek , Ghodke Akanksha Keshav
Published: December 2024

Stevens–Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are serious adverse drug reactions, triggered by medications, infections, malignancies and idiopathic causes. Clinically, they manifest as widespread, painful erythematous macules and target-like lesions, often accompanied by full-thickness or localised epidermal necrosis. Our patient, a 33-year-old male, presented with oral ulcers and painful red lesions starting from the face and progressing to involve trunk and upper extremities 5 days after administration of intravenous diclofenac for severe headache. Additional symptoms included ulceration over lips and buccal mucosa. He was diagnosed clinically as a case of SJS-TEN overlap with Severity of illness score for toxic epidermal necrolysis (SCORTEN) of 3 and was given intravenous corticosteroids. Here, we report a case of SJS-TEN overlap with corticosteroids-induced acute psychosis, treated successfully with etanercept monotherapy.
A simple technique to remove a jammed locking screw
Authors: Hammad Waheed , Elnikety Sherif
Published: December 2024

Metalwork removal is associated with complications. One complication is the jamming of locking screws in and hindering the process. This issue can arise due to cold welding, stripped screw heads, or cross-threading. Various approaches have been suggested to tackle this challenge. In this article, we present a method for removing a jammed locking screw. The method is straightforward and cost-effective, designed for removing a single jammed locking screw without requiring additional kits or specialized extraction tools. The approach involves manipulating the plate around the screw to extract both together, preserving the screw head and avoiding the need for metalwork extraction tools. The authors have successfully applied this technique to multiple patients, finding it effective, simple, and quicker than other methods. In addition, this technique minimizes the risk of metallosis, wound complications, and local reactions compared to alternative methods.
Psychosocial characteristics of smartphone use behaviors – comparison between urban and rural school students in India
Authors: Jamir Limalemla , Duggal Mona , Grover Sandeep , Kumar Dinesh , Philip Sharad , Nehra Ritu
Published: December 2024

Objective:

To compare smartphone usage between urban and rural high school students in North India.

Materials and Methods:

This cross-sectional study was conducted among high school smartphone users aged 13–18 years, from urban and rural settings in North India. Demographic data were collected, and a validated 45-item tool was used to assess problematic smartphone use (PSU). Data analysis was done using Stata version 12.0. Logistic regression was used to identify independent predictors of problematic use.

Results:

A total of 578 students participated in the study, with a mean age of 14.8 years. PSU was identified in 38.9% of participants (urban: 43.7%; rural: 35.8%; P = 0.06). Among urban students, age emerged as a significant predictor, with older students displaying a greater likelihood of problematic use (adjusted odds ratio [aOR] = 3.16). In rural students, problematic use was significantly influenced by gender (higher in males, aOR = 2.80), type of school (private school students, aOR = 3.94), usage of multiple devices (aOR = 4.34), and engagement in social networking activities (aOR = 3.21). Furthermore, higher maternal education level was identified as a protective factor against problematic use among rural adolescents (aOR = 0.13). Notably, unsuccessful attempts to control or reduce smartphone use were significantly higher among rural students (42.7%) compared to urban students (32.6%) (P = 0.02).

Conclusion:

PSU was comparable between urban students and rural students. Gender, maternal education, and economic access influenced smartphone use among school students in India. There is an urgent need to address the specific risk factors related to both urban and rural contexts.
RELATIONSHIP OF PERSONAL CHARACTERISTICS OF A PERSONALITY WITH REPRESENTATIONS OF STUDENTS OF A MEDICAL UNIVERSITY ABOUT COMMUNICATION OF A MEDICAL WORKER WITH MEDIA
Authors: Sergeev A.S. , Knyazev E.B. , Kloktunova N.A. , Barsukova M.I.
Published: December 2024

The article discusses the relationship of the prosocial characteristics of a person with the ideas of students of a medical university about the communication of a health worker with the media. The study was conducted on the basis of a survey of students of the Saratov State Medical University named after V.I. Razumovsky also showed that there are links between affection, warmth, cooperation, understanding, respect for others and the idea of readiness to assist the journalist in finding a competent speaker. The study also established a relationship between the level of attachment of students of a medical university and their understanding of the health worker’s communication with the media, which has its advantages for medical workers: prosocial personality characteristics indicate a more open position of future health workers in relation to the media, indicate their understanding of the necessary knowledge of the process of communicating with them. At the same time, they have negative consequences, since doctors can overestimate their knowledge and skills and become “victims” of a public scandal in which they will be involved in a sensationalist journalist.

В статье рассматриваются связи просоциальных характеристик личности с представлениями студентов медицинского вуза о коммуникации медработника со СМИ. Исследование проводилось на основе опроса студентов Саратовского ГМУ им. В.И. Разумовского и показало, что наблюдаются связи между привязанностью, теплотой, сотрудничеством, пониманием, уважением других и представлением о готовности оказать помощь журналисту в поиске компетентного спикера. Также в ходе исследования установлена зависимость между уровнем привязанности студентов медицинского вуза и их представлением о коммуникации медработника со СМИ, что имеет свои плюсы для работников медицинской сферы: просоциальные характеристики личности свидетельствуют о более открытой позиции будущих медработников по отношению к СМИ, указывают на их представление об обладании необходимыми знаниями процесса общения с ними. Вместе с тем они несут негативные последствия, так как медики могут переоценить свои знания и умения и оказаться «жертвами» публичного скандала, в который будут вовлечены журналистом, стремящимся к сенсации.
О влиянии инновационных стимулов на инвестиционный климат региона
Authors: Давлетшина И.В.
Published: December 2024

Статья направлена на изучение уровня влияния инновационных стимулов на инвестиционный климат региона, и связано это с тем что в последние годы на уровень развития региональных систем существенное влияние оказывает используемая инновационная деятельности и различные цифровые и инновационные методы, приемы и технологии используемые для привлечения инвестиций в региональные экономические системы. Новые технологические и инновационные возможности являются основой трансформации региональных системы и формирования стимулов для создания привлекательного инвестиционного климата. При изучении данной проблемы было уделено влияние инновационным стимулам и уровень их влияния на инвестиционный климат региона, как составляющая стимулирующей результативности инновационной деятельности субъектов хозяйствования. Проведенное исследование оказывает существенное влияние на дальнейшее изучение направлений по формирования инновационного потенциала и инновационного развития региона, как основы для увеличения инвестиционной привлекательности российских регионов. В связи с этим, тема проведенного исследования направлена на выявление и оценку уровня влияния инновационных стимулов на инвестиционный климат региона и региональных систем, а так же его влияния на качество и уровень производственных процессов в региональных системах.

The article is aimed at studying the level of influence of innovative incentives on the investment climate of the region, and this is due to the fact that in recent years the level of development of regional systems has been significantly influenced by the innovative activities used and various digital and innovative methods, techniques and technologies used to attract investment in regional economic systems. New technological and innovative opportunities are the basis for the transformation of the regional system and the formation of incentives to create an attractive investment climate. When studying this problem, the influence of innovative incentives and the level of their influence on the investment climate of the region was paid as a component of stimulating the effectiveness of innovative activities of business entities. The conducted research has a significant impact on the further study of the directions for the formation of innovative potential and innovative development of the region, as a basis for increasing the investment attractiveness of Russian regions. In this regard, the topic of the research is aimed at identifying and assessing the level of influence of innovative incentives on the investment climate of the region and regional systems, as well as its impact on the quality and level of production processes in regional systems.
Анализ рынка инновационного медицинского изделия для оценки инвестиционного потенциала
Authors: Зуенкова Ю.А.
Published: December 2024

Актуальность темы исследования обусловлена важностью достижения технологического суверенитета в сфере медицинской промышленности. В статье ставится задача оценки потенциальной инвестиционной привлекательности разработки нового медицинского изделия для выполнения стратегических целей в области импортозамещения. На примере анализа рынка инновационного медицинского изделия рассмотрен алгоритм применения инструментов инновационного маркетинга. Проведен анализ мирового и российского рынка масс-спектрометрии, выявлены ключевые технологические тренды, рассчитан оценочный и фактический индексы импортозамещения, проанализирована конъюнктура рынка и предложены возможные стратегии развития в сфере создания новых медицинских изделий. Показано, что уровень импортозамещения в сфере масс-спектрометрии остается неудовлетворительным, а российские анализаторы сконцентрированы в низком ценовом сегменте. Уход зарубежных производителей с рынка, разнообразие применяемых в данном сегменте технологий, а также широкие возможности применения анализаторов данного типа в других отраслях открывает потенциал для отечественных разработок.

The relevance of the research topic is due to the importance of achieving technological sovereignty in the medical industry. The article aims to assess the potential investment attractiveness of developing a new medical device to fulfill strategic goals in the field of medical device import substitution. At the example of the market analysis of an innovative medical device, the algorithm of using innovative marketing tools is considered. The analysis of the global and Russian mass spectrometry market was carried out, key technological trends were identified, estimated and actual import substitution indices were calculated, market conditions were analyzed and possible development strategies in the field of developing new medical devices were proposed. It is shown that the level of import substitution in the field of mass spectrometry remains unsatisfactory, and Russian analyzers are concentrated in the low-price segment. The withdrawal of foreign manufacturers from the market, the variety of technologies used in this segment, and the wide application possibilities in other industries opens up the potential for domestic developments.
Факторный анализ производительности труда
Authors: Плюсов Р.В. , Богданова Н.А. , Митрякова О.Л. , Коноплёва О.Н.
Published: December 2024

Производительность труда является одним из важнейших показателей эффективности трудовых ресурсов в экономике, с помощью которого можно оценить количество продукции или услуг, произведенных на единицу трудовых ресурсов. Производительность труда является ключевым элементом для повышения конкурентоспособности компаний и национальной экономики в целом. В современных условиях она становится объектом внимания для исследований в различных научных сферах. В связи с этим, данная статья направлена на раскрытие основных факторов, влияющих на производительность труда, таких как квалификация сотрудников, условия труда, мотивация, организационная культура, материально-техническое оснащение. Цель данной статьи состоит в анализе факторов производительности труда и определении индикаторов, которые являются базовыми для разработки и принятия управленческих решений.

Labor productivity is one of the most important indicators of the efficiency of labor resources in the economy, with the help of which it is possible to estimate the number of products or services produced per unit of labor resources. Labor productivity is a key element for improving the competitiveness of companies and the national economy as a whole. In modern conditions, it becomes an object of attention for research in various scientific fields. In this regard, this article is aimed at revealing the main factors affecting labor productivity, such as employee qualifications, working conditions, motivation, organizational culture, material and technical equipment. The purpose of this article is to analyze labor productivity factors and identify indicators that are basic for the development and adoption of management decisions