bluuebunny/crossref_metadata_2025 huggingface dataset:
Random shear resistance of a headed-stud connector in composite steel-concrete beam
Authors: Domański Tomasz , Maślak Mariusz
Published: December 2024

In the traditional, standard, computational approach, the shear resistance of a single headed-stud connector, ensuring the composite connection between a steel beam and a reinforced concrete slab resting on this beam, is determined by comparing the load capacity PRs – determined by the destruction of the steel connector itself, and the load capacity PRc – conditioned by the destruction of the concrete surrounding this connector. In a single implementation, the smaller of these both values, i.e. PR = min (PRs, PRc ), is authoritative for the designer. If, however, both combined strengths are treated as the random variables and a statistically homogeneous sample grouping potentially possible implementations of this type is taken into account, then the design resistance PR;d = [min (PRs, PRc )]d, representative for the verification of ultimate limit state for the considered connection, will be quantitatively different from the value PR,d = [min (PRs,d, PRc,d ) recommended for use in this regard in the standard EN 1994-1-1. In this paper a detailed algorithm for the correct specification of this value is presented in detail. The dependence of such value on the mutual relationship between the coefficients determining the statistical variability of the strength of the connector steel as well as the strength of the concrete from which the floor slab was made is also demonstrated. The proposed approach is based on the fully probabilistic design format, according to which the appropriate level of the probability of reliable work of the analyzed connection is ensured. The presented considerations are illustrated with a numerical example. On its basis, the degree of simplification of such evaluation is estimated, as well as its consequences, resulting from the use of a conventional standard model in this respect.
Safety management of deep excavation engineering in subway stations based on soil mechanics response simulation analysis
Authors: Zhang Deqiu , Wang Jingyan
Published: December 2024

As the economy develops with the continuous acceleration of modern urban construction, the demand for subway construction has been increasing. When constructing subway stations, the safety management of deep foundation pit support engineering is particularly important. To balance the absolute safety and economic benefits of subway station construction projects, the safety management of subway station deep excavation projects based on soil mechanics response simulation analysis is studied. Taking the deep foundation pit project of Wuhan Metro Station as an example, this study uses numerical simulation analysis technology and actual monitoring data to conduct in-depth analysis of the deformation of the deep foundation pit. Meanwhile, through finite element technology, the influence of internal support system structural parameters on deep foundation pit deformation in deep foundation pit support engineering is studied, and the parameters of the original support structure are optimized. Results showed that the maximum horizontal displacement of the original scheme reached 25.7 mm, while that of the optimized parameter scheme was only 18.6 mm, which is a decrease of 27.62% compared to the original scheme. In summary, the research on safety management of subway station deep foundation pit engineering based on soil mechanics response simulation analysis is important in promoting the development of modern urban subway construction.
Mechanical properties of polypropylene fiber reinforced concrete short columns under freeze-thaw cycles
Authors: Zhang Zhenyu , Jin Quan , Zhang Haitao , Jiang Yantao
Published: December 2024

To investigate the effect of polypropylene fibers on the mechanical properties of concrete structures in cold regions, obtain an appropriate amount of polypropylene fiber content, and improve the frost resistance of the structure, freeze-thaw cycle tests were conducted on three groups of reinforced concrete short column specimens with different polypropylene fiber contents. The depth of surface damage of the specimen was detected using ultrasonic method. The stress process and failure of the specimen were analyzed through axial compression test, and the corresponding changes in compressive toughness were discussed. A formula for calculating the axial compressive bearing capacity of polypropylene fiber reinforced concrete short columns after freeze-thaw cycles was established. The test results indicate that the addition of polypropylene fibers can reduce the compressive bearing capacity of reinforced concrete short columns. An appropriate amount of polypropylene fiber can enhance the frost resistance, ductility and toughness of concrete components, and the recommended volume fraction of polypropylene fiber is 0.08–0.12%.
Capacity of connections on punched metal plate fasteners made of spruce wood reinforced with perforated plates and screws
Authors: Raczak Angelika , Kubiszyn Wieslaw , Nykiel Damian
Published: December 2024

In Poland, until 2010, a number of buildings were built with the support structure of roofs in the form of timber trusses connections with punched metal plate fasteners. Standardisation changes, i.e. the introduction of Eurocodes in 2010, resulted in, among other things, increasing the values of recommended climatic loads. Due to the above, in structures built several years ago, the load capacity limit for both timber and fasteners is exceeded. Modernisation of structures with these trusses usually leads to the need to strengthen existing nodes. The issue of strengthening connections with punched metal plate fasteners is poorly recognised in experimental (failure) tests, and thus there are no detailed standard guidelines. The purpose of the experimental tests was to identify the behaviour of tension connections on metal plate fasteners and to evaluate the impact of the additional reinforcement in the form of perforated plates and screws. The analysis of the results obtained from the experimental tests allows us to conclude that the reinforced nodes achieved a much higher ultimate load than the one resulting from the design calculations.
Mechanical properties and fracture behavior of sandstone similar materials with different joint positions and thicknesses based on triaxial testing and PFC simulation
Authors: Jing Wei , Lu Bingpeng , Jing Laiwang , Jin Rencai
Published: December 2024

The mechanical properties and failure characteristics of joined rocks have an important impact on the disaster prevention of underground engineering and the sustainable development of mineral resources. The effects of confining pressure, joint location, and joint thickness on the mechanical properties of rock-like specimens under triaxial test have been studied. Furthermore, using the "DFN-age" function of PFC numerical simulation, the stress characteristics, and failure characteristics of rock specimens under different confining pressure, joint location and joint thickness are analyzed. The research results indicate that as the thickness of the joint increases and the joint position approaches the center of the specimen, the compressive strength of the specimen decreases. As the confining pressure increases, the compressive strength increases and failure modes of rock like specimens with different joint types also tend to be similar. The specimens manifest complex shear-tensile composite failures. In addition, the initiation cracks and main control cracks at the joint terminus can be classified as reverse tensile wing cracks, reverse shear cracks, shear cracks and tensile wing cracks. When the joint thickness of the specimen is 1.0 mm and the distance from the joint position to the center of the specimen is 10–20 mm, the crack evolution characteristics and stress distribution law of the specimen will undergo a transformation.
Modelling the Movement of Concentrate Particles in a Flash Furnace
Authors: Kolczyk E.
Published: December 2024

Using the numerical modelling, the movement of the solid phase in the form of concentrate particles was analysed in the space of the reaction shaft and in the settler of the flash furnace. The calculations were carried out using a two-phase flow module. It was found that for all analysed concentrate particle sizes their share in the reaction shaft decreased over time. The particles moved in the form of one stream extending along the reaction shaft, accumulating on the side walls of the shaft and settler. Vortices were formed in the region of the settler tub containing particles to the upper spaces of the reaction shaft. The proportion of concentrate particles along the center of the reaction shaft after 60 s is 70 μm 1% - 3% for particles, 80 μm 0.1% - 0.7%, and for 100 μm 0,2m 0.2% - 0.7%. Along the side walls of the shaft, the shares of 70 μm particles varied between 40% and 9% over a shaft length of 5.5 m, and over 1.5 m from 12% to 10%. For 80 μm particles, the shares were 5% to 1%. The shares of 100 μm particles over a length of 1.5 m varied between 7% and 3%, and over a length of 5.5 m from 7% to 2%. Along the 70 μm reaction shaft, the concentrate particles moved the fastest at a speed of 8 m/s to 0.23 m/s. The 80 μm particles moved fastest in the range of 13 m/s to 3 m/s, and the 100 μm particles from 0.4 m/s to 2 m/s.
Improved Pix2PixGAN water-bearing ore reflection image restoration method
Authors: Luo Hui , Zeng Qingwen , Luo Xiaoyan , Hu Zhen
Published: December 2024

At the ore crushing site, the crushed ore must be washed to remove sediment, and the washing step puts the detected ore in a watery environment, resulting in the presence of reflective areas in the image of watery ore particles. Aiming at the problem of mis-segmentation of ore images due to the masking of ore feature information by the reflective area, an improved Pix2PixGAN model is proposed to solve the problem of removing water and repairing the reflective area in watery ore images. The ResNet network with good stability is used to comprehensively extract the features of watery ore images, improve the stability of network training, introduce the structural similarity loss function, and update the network parameters by minimising the structural similarity loss value to reduce the structural differences between the reconstructed image and the real image. The experimental results show that the improved Pix2PixGAN model compares with the Pix2PixGAN and CycleGAN models; the watery ore image removes the water image reflection restoration better and, at the same time, improves the structural edge clarity of the generated dry ore particle image. The PSNR and SSIM evaluation metrics are improved by 8.8 and 1.28%, respectively, further verifying the effectiveness of the improved algorithm. This innovative approach provides a feasible solution for image processing at the ore-crushing site. It is of great significance for the subsequent enhancement of image recognition, segmentation, and reduction of misjudgment.
Bionic model of blood cell segmentation based on impulse image transformation
Authors: Bukhtiiarov Roman Yu. , Tarasov Anatoliy V. , Rabotiahov Andriy V. , Cheverda Victor M. , Gigolaev Alexander
Published: December 2024

Introduction:

The relevance of the proposed topic is determined by the high incidence of hematopoietic system diseases and the lack of a clear understanding at the cytological level of their mechanisms and correction methods. The purpose of the article is to create images of blood cells using mathematical modelling.

Materials and Methods:

To achieve the defined goal, fundamental research methods were utilized, among which the method of mathematical modelling played a significant role, employed in creating a bionic model of blood cells.

Results:

The results of this study have indicated that the task of recognizing blood cells in complex images poses a significant challenge in the field of medicine. Such tasks are complicated by the transparency of cells compared to the buffer solution, uneven thickness of the blood smear, and varying staining of the smear. Therefore, there is a need to improve the segmentation algorithm of the bionic model and develop new, more efficient methods and models for image recognition. The algorithm for constructing the bionic model segmentation consists of four main steps.

Conclusion:

The practical significance of this research lies in the possibility of using the obtained results in the further development of clinical correction and treatment methods for diseases such as anaemia, thrombocytopenia, and neoplastic processes.
Short-term response of melanoma spheroids and melanocytes to FLASH proton therapy - colorimetric and FTIR microscopy study
Authors: Durak-Kozica Martyna , Stępień Ewa , Swakoń Jan , Jany Benedykt R. , Kawoń Kamil , Wróbel Damian , Kusyk Sebastian , Grzesiak Małgorzata , Knapczyk-Stwora Katarzyna , Wróbel Andrzej , Chwiej Joanna , Moskal Paweł
Published: December 2024

Introduction: Melanoma, an aggressive and highly immunogenic cancer, arises from uncontrolled melanocyte growth. FLASH radiotherapy, a breakthrough technique, delivers ultra-high radiation doses, offering the potential for improved cancer treatment while minimizing harm to healthy tissue.

Material and Methods: To study the short-term response of spheroids to FLASH radiotherapy, 3D cultures of melanocytes and melanoma were used. Spheroids were irradiated using the FLASH method with the total doses of 3, 20, and 40 Gy, and conventionally with a dose of 3 Gy. After 8 days from irradiation, the measurements were taken using an imaging cytometer, FTIR and colorimetric microscopy (C-Microscopy).

Results: Studies conducted on melanocytes showed that doses of 20 and 40 Gy are toxic to them and cause cell necrosis. In contrast, for melanoma, these two doses resulted in tumor growth inhibition. IR measurements revealed spectral changes in lipids, proteins, and DNA/RNA, indicating similarities between the effects of the FLASH method and conventional radiotherapy for both spheroid models (i.e., cancerous and normal). The spheroid quantitative color analysis allowed for the differentiation between different irradiated and control groups.

Conclusion: Both colorimetric and infrared microscopy can be used to analyse the response of tumors to radiation.
Radon dosimetry - comparison of selected measurement methods
Authors: Matusiak Katarzyna , Oczkiewicz Daria
Published: December 2024

Introduction: Recently, the measurement of radon concentration has become one of the necessary procedures for implementation and execution in dosimetry. The aim of this study was to compare effectiveness, accuracy and ease of use of three selected radon measurement methods: one active and two passive.

Material and Methods: Lucas chambers (scintillation method), thermoluminescent detectors (TLD) and track detectors (CR-39) were used. Air measurements were performed for two different locations: Czeladz (C) and Krakow (K). The measuring devices were placed in the basements for a specified time (30 days) and, in case of active detectors, additional measurements were performed in the exposure-reading mode.

Results: For the Lucas chamber, single-day and seasonal measurements were done. For all detectors, results from the winter session (C: 657 ± 16 Bq/m3, K: 825 ± 17 Bq/m3), CR-39 (C: 138 ± 47 Bq/m3, K: 72 ± 35 Bq/m3) and TLD (C: 0.82 ± 0.04 mGy, K: 0.82 ± 0.08 mGy), autumn (C: Lucas chamber 1458 ± 19 Bg/m3, CR-39 430 ± 92 Bq/m3, TLD 0.21 ± 0.01 mGy) and spring (most readings at background level) were compared. Additionally, an attempt was made to convert the obtained radon concentrations into doses.

Conclusion: Lucas chambers, designed for measurements in the exposure-reading mode, can also be used in long-term measurements. Both track and thermoluminescent detectors can be used for long-term measurements. More than one method may be required to obtain accurate measurement information. The results of measurements conducted in the seasonal mode indicate that the implementation of protective procedures, such as systematic ventilation, can contribute to a significant reduction in high radon concentrations.
Hubungan Usia, Kelas, Jenis Kelamin, Jenis SD, Pola Asuh Orang Tua, dan Perilaku Bermain Game Online yang Mengandung Kekerasan dengan Perilaku Bullying Victimization pada Anak-Anak Sekolah Dasar di Denpasar
Authors: Prijadi Evelyn Andreana , Aryani Putu , Putri Wayan Citra Wulan Sucipta , Yuliyatni Putu Cintya Denny
Published: December 2024

Bullying victimization merupakan bentuk perilaku agresif yang menyakiti orang lain dan memberi banyak dampak negatif. Ada banyak faktor risiko bullying victimization, namun faktor risiko ini kerap tidak konsisten antar penelitian. Pemerintah menerapkan program Sekolah Ramah Anak untuk membantu mengatasi bullying victimization. Tujuan penelitian ini adalah untuk mengetahui apakah bullying victimization masih terjadi setelah penerapan program Sekolah Ramah Anak, untuk mengetahui prevalensi bullying victimization di Denpasar, dan meneliti faktor apa saja yang mempengaruhi bullying victimization. Faktor yang diteliti di penelitian ini adalah usia, kelas, jenis kelamin, jenis SD, pola asuh orang tua, dan perilaku bermain game online yang mengandung kekerasan. Penelitian ini menggunakan desain analitik dengan pendekatan cross sectional. Responden penelitian berjumlah 340 anak dari empat SD kelas 4-6 yang dipilih melalui cluster random sampling. Pola asuh orang tua diukur dengan Parenting Style and Dimenssion Questionnaire (PSDQ). Perilaku bermain game online diukur dengan Entertainment Software Rating Board (ESRB). Perilaku bullying victimization diukur dengan Peer Interaction in Primary School (PIPS) Questionnaire. Analisis data dilakukan dengan analisis univariat dan bivariat. Hasil dari penelitian didapat prevalensi bullying 82,1% dan faktor risiko yang berpengaruh secara signifikan adalah usia, kelas, dan perilaku bermain game online yang mengandung kekerasan. Penelitian menyimpulkan perilaku bullying victimization masih terjadi setelah program Sekolah Ramah Anak diterapkan.
Sustainability and Public Management: Focusing on Leadership and on the Development of Competences
Authors: Daversa Michel Cleiton Andersson , Farias Ariadne
Published: December 2024

Objective: The objective of this study was to investigate the competences associated to the practice of Sustainable Leadership in the city management, having the purpose of identifying pitfalls and proposing strategies for the development of competences that are aligned with the pillars of sustainability.
 
Theoretical Framework: The current research is grounded on Sachs’s (1993) pillars of sustainability, which integrate economic, social and environmental aspects, as well as on competence-based management and sustainable leadership. These theoretical bases guide the analysis and the development of competences associated to the exercise of sustainable leadership by city managers.
 
Method: This is an exploratory and qualitative study, containing semi-structured interviews that have been conducted with eleven city managers, as well as an analysis of institutional norms. The goal was to identify the current situation regarding competences, in order to assess how they are related to sustainability practices and to propose a strategy for the development of such competences.
 
Results and Discussion: The reports demonstrated a lack of competences associated to the practice of sustainable leadership in public city management, and the official documents confirm that there is a need for training that is focused on the development of these strategies, which are essential to promote collective well-being and sustainable practices at the local level.
 
Implications of the study: The study adds to the field when it proposes a practical strategy for training public leaders, influencing in the adoption of sustainable policies and practices. Academically, the study adds to the debate on public city management and sustainability.
 
Originality/Value: This study relates management competences to sustainability in the public sector, providing resources for the development of competences related to sustainable leadership as a key point for the improvement of administrative practices and for guidance on sustainable public policies.
Establishment of a Low-Cost Reinforced Concrete Prefabricated Family Housing Construction System
Authors: Villanueva Edwing Jesús Ticse , Aquise Guillermo Yorel Noriega , Rodríguez Fredy Nicolás Molina
Published: December 2024

Objective: The objective of this study is to investigate the feasibility of an affordable and rapidly deployable prefabricated housing system adapted to urban contexts and emergency scenarios. The aim is to design an integrated system for the production, construction, and assembly of prefabricated reinforced concrete housing, offering accessible, efficient, and flexible housing solutions.
 
Theoretical Framework: The research is grounded in key concepts and theories such as prefabrication in construction, modularity, environmental sustainability, housing resilience, advanced concrete technology, and project management on-site, providing a solid basis for understanding its context.
 
Methodology: The study employs a comparative method, analyzing six representative housing units with built areas of 25.83 m², 33.39 m², 39.06 m², 42.21 m², 52.29 m², and 59.85 m². Data collection occurred in three stages: (1) search and review of experiences, (2) design and development of basic housing models, production, and assembly, (3) results analysis to evaluate technical and economic feasibility.
 
Results and Discussion: The results confirm the feasibility of designing six models of basic family housing that comply with Peruvian standards and are accessible to low-income families. A production process for prefabricated elements is proposed, adaptable to any location and operable with minimal equipment. Among the evaluated models, VUF 04 stands out for its lowest cost, estimated at $311.43 USD per square meter of built area.
 
Research Implications: The implications of this research are broad and significant, highlighting its potential to transform the design, production, and assembly of housing in urban and emergency contexts. By addressing multiple aspects, this study establishes a solid foundation for the implementation of sustainable, accessible, and efficient housing solutions.
 
Originality/Value: The originality of this study lies in its decentralized and simplified production approach, carried out on-site with minimal equipment. Its value resides in democratizing access to affordable, efficient, and sustainable housing, providing an alternative model to centralized systems and laying the groundwork for future research on accessible and resilient construction.
Assessing level of awareness and utilization of preconception care among Saudi Women in Al-Ahsa, Eastern Region, Kingdom of Saudi Arabia, 2023
Authors: Aljumaiah Aeshah , Alhassan Walaa , Alramadan Ashraf , ALmubarak Duaa
Published: December 2024

Background: Preconception care (PCC) is an essential component of preventative healthcare, aimed at identifying and addressing behavioral, environmental, and biological risks to improve pregnancy outcomes. This study aims to assess the level of awareness and utilization of PCC among Saudi women in Al-Ahsa, Eastern Region, Saudi Arabia.
Methodology: A cross-sectional study was conducted in 2023, targeting Saudi women aged 18 to 40 years attending primary health care centers in Al-Ahsa. Data were collected via an online survey consisting of socio-demographic details, knowledge assessment, and PCC utilization. Descriptive statistics and chi-square tests were applied using Statistical Package for Social Sciences version 21 to analyze the data.
Results: Of the 370 participants, the majority (42.7%) were aged 35-40 years, with 85.7% being married and 68.9% holding a bachelor's degree or higher. About 65.9% of participants understood the meaning of PCC, and 80.8% recognized its importance. Significant differences were found in knowledge levels across age groups, marital status, and educational levels, with participants holding higher education showing greater awareness. The primary barrier to PCC utilization was a lack of knowledge (60%) about its benefits.
Conclusion: The study revealed moderate awareness of PCC among Saudi women in Al-Ahsa, with education playing a key role in knowledge levels. However, gaps in knowledge persist, highlighting the need for targeted educational initiatives to increase PCC utilization and enhance maternal and neonatal health outcomes in the region.
Assessment of Diabetic Patient Satisfaction and Efficacy of Semaglutide in Qassim Region; in Saudi Arabia
Authors: Algeffari Metab , Alawaji Mayadah , Aladwan Asim , Alharbi Jaber , Alharbi Shikhah , Aljameeli Osama , Alharbi Mariam , Alhumud Abdullah
Published: December 2024

Objective: This study aimed to assess the efficacy, safety, and patient satisfaction regarding semaglutide treatment among the population of Qassim, Saudi Arabia.
Methodology: A self-administered questionnaire was distributed through online platforms to collect data from patients with type-2 diabetes who were using semaglutide treatment for 2-3 years in Qassim region, Saudi Arabia.
Results: Around 56.5% of the study participants had a subcutaneous form of semaglutide treatment. Before the treatment, 54.0% of the participants on oral semaglutide were above normal weight, and 47.8% of participants on subcutaneous semaglutide were above normal weight. After the treatment, the oral semaglutide group demonstrated higher efficacy in reducing weight and improving HbA1c levels in comparison to subcutaneous semaglutide. Most of the study participants were satisfied with their treatment; however, the oral semaglutide group demonstrated higher satisfaction than the subcutaneous group. Adverse events such as nausea, vomiting, and diarrhea, in addition to headaches and dizziness, were all higher among the subcutaneous semaglutide group and it demonstrated a statistically significant association with the patient's possibility of changing their treatment form.
Conclusion: Semaglutide treatment was effective, safe and had an overall high satisfaction rate among type-2 diabetic patients in the Qassim region, of Saudi Arabia.
Wokół (teorii) wiersza
Authors: Mastalski Arkadiusz  Sylwester , Pietras Wojciech
Published: December 2024

Artykuł prezentuje wstępne uwagi na wersyfikacji i teorii wiersza, przedstawiając najważniejsze postacie obecne w dyskursie wersologii w upływającym stuleciu na polskiej oraz europejskiej (czy szerzej, zachodniej) scenie badawczej oraz najistotniejsze publikacje, tak krajowe, jak i zagraniczne, w których problematyka wiersza, wersyfikacji i wersologii jest obecna. Pokazuje zarazem wiedzę o wierszu w jako element badań literaturoznawczych czy kulturoznawczych w ogóle – stale obecny i żywy, mimo zmieniających się mód, prądów i paradygmatów.
Nieudana rewolucja
Authors: Jarnuszkiewicz Maja
Published: December 2024

Przedmiotem rozważań jest forma socrealistycznych utworów z wczesnego okresu twórczości Woroszylskiego. Wiersze poddano analizie wersologicznej pod kątem budowy strofy, rytmu i rymu, w odwołaniu do klasycznych i nowszych badań nad teorią wiersza, w ścisłym powiązaniu z wymową utworów. W artykule wspomniano pracę pisarza pt. Batalia o Majakowskiego, postulującą naśladownictwo radzieckiego poety oraz porzucenie „klasycznej” poetyki. Walka o nowy sposób pisania (wobec przekonania, że stary nie nadaje się do opisu współczesności) staje się walką polityczną i batalią o formę wypracowującą nowe metody wiązania prozodii i struktury wiersza z aktualną rzeczywistością. Nieudana batalia, krytykowana przez ustawodawców realnego socjalizmu za ekspresjonizm i formalizm, traktowana jest w artykule jako odchylenie od kanonu socrealistycznego, wyraz młodzieńczego eksperymentalizmu i podstawa przyszłej, dojrzałej twórczości autora. Wynika to z faktu dojrzenia przez niego autentyzmu poetyki „antyestetycznej”.
Semantyka znaków kulturowych wobec struktur wersyfikacyjnych w "Wypiórze" Grzegorza Uzdańskiego
Authors: Rawski Jakub , Mastalski Arkadiusz
Published: December 2024

Celem artykułu jest analiza współczesnego poematu Wypiór Grzegorza Uzdańskiego w optyce semiotycznej oraz wersologicznej. Liczne nawiązania kulturowe, związane z kreacją Adama Mickiewicza jako wampira, w utworze nie powinny być interpretowane w oderwaniu od rozmaitych struktur wersyfikacyjnych obecnych w tekście. Poprzez głębszy namysł nad powinowactwami łączącymi wielorakie sensy tekstu Uzdańskiego z jego wierszową strukturą rozpatrywaną w kontekście tradycji wersyfikacji romantycznej i jej konkretnych manifestacji w poezji autora Ballad i romansów można, jak się zdaje, lepiej pojąć sposoby istnienia dzisiejszej romantyczności w dobie trwających obecnie rewolucji: komunikacyjneji technologicznej. Istotne wydaje się również wskazanie na pojemność genologiczną Wypióra, manifestowaną na różnych poziomach zarówno rodzajowości, jak i gatunkowości. Romantyczny synkretyzm okazuje się istotną płaszczyzną tradycji, do której nawiązuje współczesny autor.
Ikoniczność jako medium doświadczeń. Margaret Freeman, The Poem as Icon, Oxford University Press, Oxford 2020, ss. 228.
Authors: Pietras Wojciech
Published: December 2024

Artykuł jest recenzją książki Margaret Freeman The Poem as Icon, której autorka opisuje przebieg tego, co określa poznaniem poetyckim, z pomocą zdefiniowanego przez siebie pojęcia ikoniczności. Recenzja omawia wybrane punkty i główne założenia koncepcjiFreeman, w tym te problematyczne ze ściśle scjentystycznej perspektywy, a także sytuuje zaprezentowaną w książce teorię w kontekście innych znanych polskim czytelnikom opracowań humanistycznych z nurtu kognitywistycznego. W tekście podjęto także próbę oceny potencjału The Poem as Icon dla stanu polskich badań nad wierszem.
Reevaluating ortho-Carborane Synthesis: Success with Mono-Substituted Acetylenes in the Presence of Silver Salts
Authors: Svaliavyn Oleh V. , Mishchenko Artem M. , Lishchenko Yulian L. , Mityuk Andrey P. , Cherednichenko Alona S. , Shtil Nataliya A. , Turcheniuk Volodymyr V. , Smaliy Radomyr V. , Rassukana Yuliya V. , Pashenko Olexandr Ye.
Published: December 2024

The study shows that traditional methods for synthesizing ortho-carboranes from nido-B10H14 and its complexes (B10H12L2) using donor- and acceptor-disubstituted acetylenes yielding low efficiencies (yields 0 - 12%). Attempts to improve yields with ionic liquids and silver salts as catalysts were unsuccessful with disubstituted acetylenes. However, it has been found that the use of mono-substituted acetylenes (phenylacetylene, ethyl propiolate) in the presence of silver salts in the reaction with B10H12L2 substrates produces ortho-carboranes in high yields (~90%). This suggests that the key step is the formation and subsequent addition of silver acetylenides, and not the donor-acceptor π-complexes previously assumed. This finding allows us to better understand the mechanisms of the ortho-carboranes formation and offers an efficient pathway for their synthesis.
Gabriel Turbay, ¿liberal de izquierda u oligarca? Una respuesta a la luz de su origen, ideas y trayectoria
Authors: González Olga L
Published: December 2024

En la historiografía colombiana, y en el saber popular, se suele afirmar que el político liberal Gabriel Turbay, quien fuera rival del líder Jorge Eliécer Gaitán en la elección presidencial de 1946, era un “oligarca”. El epíteto con el que se le califica ha encerrado a Gabriel Turbay en un rol que, sin embargo, no resiste al análisis. Este epíteto omite discutir lo que sucedió realmente en las elecciones de 1946, unas elecciones determinantes en Colombia. Este artículo se propone mostrar por qué ese calificativo es inadecuado y es el fruto de un prejuicio que denota una profunda ignorancia de quién fue Gabriel Turbay. El artículo se concentra en los años de actividad política de Gabriel Turbay (1927- 1946), desde su participación en el primer congreso comunista en Colombia hasta las elecciones presidenciales. Se muestran algunas de sus ideas y, que son las de un liberal de izquierda. El artículo se apoya en una investigación documental (archivos de prensa, debates en el Congreso, correspondencia y otras fuentes).
Los ríos del Pacífico como articuladores de identidades y espiritualidades
Authors: Motta González Nancy
Published: December 2024

El Pacífico colombiano es un espacio acuático que liga la naturaleza con la identidad. El río es vida, experiencia geográfica y punto de referencia que dota de sentido de pertenencia localizada individual y colectiva. Las actividades económicas, socioculturales, simbólicas están íntimamente ligadas al cauce de las cuencas hidrográficas de los ríos. Así mismo, los ríos constituyen materia viva que se conjugan con la muerte en los pueblos del Pacífico. Esta región es llamada por Alfredo Vanín “culturas fluviales del encantamiento”, que da cuenta de una poética del mar, de la selva, de la oralidad cuyas comunidades afro pacífico constituyen un testimonio de una existencia mística con una particular cosmovisión.
La bibliotecología en permanente diálogo humano. Parada, Alejandro E. Bajo el signo de la Bibliotecología. Ensayos bibliotecarios desde la posmodernidad tardía. Córdoba: Eduvim, 2023. 154 p. ISBN 978-987-699-797-4.
Authors: Rubio Hernández Alfonso
Published: December 2024

En el año 2019, Alejandro Parada nos dio a conocer su libro titulado Lectura y contralectura en la Historia de la Lectura. Lo presentaba como una obra “selectiva y parcial”. En ella se resumían las inquietudes de una larga y reconocida trayectoria académica centradas en la Historia de la Lectura; una obra pensada no únicamente como referencia encaminada al planteamiento y resolución de casos prácticos de estudio, sino también como problemática de índole existencial de la propia disciplina.
Tata Letak dan Penerangan Lampu Tenaga Surya Pada Panti Kemah Peduli Sahabat Kasih
Authors: Hidayat Trifenaus Prabu , Sugioko Andre , Widiarto Sandra Octaviani B. , Nur Tajuddin
Published: December 2024

Kemah Peduli Sahabat Kasih is a shelter for ODGJ (people with mental disorders) managed by one family. This shelter is located at Jl. Kp. Cicayur Kebun Manggu No.21, RW.1, Cisauk, Tangerang, Banten. In its operational activities, this shelter does not yet have adequate lighting. One of the facilities, precisely on the access road to the shelter, is inadequate. In addition, the lighting facilities in the front and back yards are also inadequate. Therefore, the purpose of creating lighting facilities on the access road to the shelter is to make it easier to get to the shelter, especially to provide lighting around the shelter so that nighttime operational activities are not hampered. The existence of lighting facilities on the access road to the shelter and lighting in the front and back yards is one of the important things to ensure security and safety in supporting nighttime operational activities safely and comfortably. The community service activity of utilizing solar energy in public street lighting as a replacement for conventional energy in Cisauk has gone well. This is supported by the results of the trial of the lights being able to be turned on and off, and the results of the interview gave a good activity score.
PERIODISMO POLÍTICO COMPARADO EN SUDAMÉRICA
Authors: Schuliaquer Ivan , Moreira Cesar Camila
Published: December 2024

RESUMEN – Este artículo analiza las (re)configuraciones del periodismo político ante los desafíos del ecosistema infocomunicacional contemporáneo, la polarización política y las disputas por la verdad. Se utilizan entrevistas, observaciones y revisión de literatura para desarrollar un modelo propio para analizar el periodismo político comparado aplicado a Argentina, Brasil y Uruguay. Los resultados indican que, a pesar de las continuidades existentes en América Latina, la configuración del periodismo político varía significativamente entre los países, afectando el debate público. En Uruguay y Brasil, se busca contener la desinformación, mientras que en Argentina esta es, a veces, alimentada por los propios periodistas.
ABSTRACT – This article analyzes the (re)configurations of political journalism in the face of the challenges of the contemporary information-communication ecosystem, political polarization, and disputes over the truth. It employs interviews, observations, and literature review to develop an unique model for comparative analysis of political journalism, applied to Argentina, Brazil, and Uruguay. The results indicate that, despite remaining continuities in the Latin American region, the characteristics of political journalism vary significantly between countries, impacting public debate. In Uruguay and Brazil, efforts are made to contain misinformation, while in Argentina, it is sometimes perpetuated by the journalists themselves.
RESUMO – Este artigo analisa as (re)configurações do jornalismo político diante dos desafios do ecossistema infocomunicacional contemporâneo, da polarização política e das disputas pela verdade. Utiliza-se entrevistas, observações e revisão de literatura na elaboração de um modelo próprio para analisar o jornalismo político comparativamente, aplicado à Argentina, Brasil e Uruguai. Os resultados mostram que, apesar das continuidades existentes na América Latina, as características do jornalismo político variam significativamente entre os países, afetando o debate público. No Uruguai e no Brasil, busca-se conter a desinformação, enquanto na Argentina ela é, por vezes, alimentada pelos próprios jornalistas.
Success of Social Sciences Learning in Fourth Grade Elementary School Students in Buay Madang Timur Sub-district: Is There a Connection Between Self-efficacy and Self-directed Learning?
Authors: Baharudin  , Nur Asiyah  , Ida Fiteriani  , Abu Dharin
Published: December 2024

This research aims to explore and understand the potential relationship between self-efficacy and students' self-directed learning at the Elementary School level. The research design employed is quantitative associative research with a correlational design. A total of 80 students from three elementary schools were selected as research subjects using cluster sampling without specific divisions. Unlike previous studies that tend to discuss self-efficacy and independent learning in general terms, this study offers a specific approach focusing on the subject of Social Studies (IPS). Social Studies was chosen due to its significant role in developing students' understanding of history, geography, and the social and cultural dynamics that shape their identity. The results of the analysis using T-tests and correlation tests indicate a significant correlation, providing evidence of a tangible relationship between the levels of self-efficacy and self-directed learning among students in the subject of Social Sciences (IPS). The implications of this research go beyond understanding this relationship, offering potential contributions to educational practices. The findings can serve as a reference for educators and educational practitioners to better understand how to enhance students' self-efficacy and self-directed learning. Furthermore, this research provides a foundation for taking further actions to address issues related to self-efficacy and self-directed learning in the elementary education environment. Therefore, it is hoped that this research will provide substantial benefits for educational development, especially in enhancing the effectiveness of student learning at the Elementary School level in the subject of Social Sciences (IPS).
Identification of transcription factors associated with the disease-free survival of triple-negative breast cancer through weighted gene co-expression network analysis
Authors: Wang Huipo , Hao Ran , Liu Wei , Zhang Yi , Ma Shen , Lu Yiwei , Hu Jie , Qi Yixin
Published: December 2024

Objective:

Triple-negative breast cancer (TNBC) is a subtype of breast cancer that has a worse prognosis than the other subtypes of breast cancer because of its high recurrence and metastasis rates. The objective of this study is to identify the regulatory factors that are associated with the disease-free survival (DFS) of TNBC and potential biomarkers for TNBC treatment.

Material and Methods:

We obtained the GSE97342 dataset from the Gene Expression Omnibus website and conducted weighted gene co-expression network analysis (WGCNA) to identify modules associated with the DFS of TNBC. Subsequently, biological functions of the modules were elucidated through Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses. Cross-checking with the Human Transcription Factor Database facilitated the selection of hub transcription factors through univariate Cox regression analysis of overlapping transcription factors. Utilizing bioinformatics analysis, we assessed the prognostic significance of these hub transcription factors, investigated their target genes, and explored their associations with tumor immune cells in TNBC. Finally, the expression levels of the hub transcription factors were validated by immunohistochemical staining, quantitative reverse transcription polymerase chain reaction (qRT-PCR), and Western blotting.

Results:

Through WGCNA analysis, we identified three modules correlated with DFS in TNBC. GO and KEGG analyses elucidated the biological functions of genes within these modules. Survival analysis pinpointed three hub transcription factors: Forkhead box D1 (FOXD1), aryl hydrocarbon receptor nuclear translocator 2 (ARNT2), and zinc finger protein 132 (ZNF132). The expression level of FOXD1 was negatively associated with the prognoses of patients with TNBC, whereas the other two genes were positively associated with the prognoses of patients with TNBC. Immunohistochemical staining, qRT-PCR, and Western blotting validated the expression levels of the hub transcription factors.

Conclusion:

We discovered three hub transcription factors (FOXD1, ARNT2, and ZNF132) that were correlated with the DFS of TNBC. These correlations suggested their potential as prognostic predictors for patients with TNBC.
Promotion of inflammatory response in mice with diabetes periodontitis: regulation of forkhead box protein M1 silencing to mediate activator protein-1 via reactive oxygen species production
Authors: Yang Yang , Ren Dongping , Peng Bibo , Huang Jialin , Yang Bingxue
Published: December 2024

Objective:

Periodontitis, the sixth major complication of diabetes, has a mutually influential and mutually reinforcing relationship with diabetes. Forkhead box protein M1 (FOXM1) is essential for osteoclast differentiation, periodontitis, and diabetes. This study aims to investigate the potential action mechanisms and effects of FOXM1 on diabetes periodontitis.

Material and Methods:

A model of mice with diabetes periodontitis was created. The pathological damage of periodontal tissues in the mandibles of mice was assessed through hematoxylin–eosin staining. The expression of bone resorption-related, cell proliferation transcription, inflammatory, and oxidative stress-related factors in mice with diabetes periodontitis was analyzed through Western blot and quantitative reverse transcription polymerase chain reaction. Oxidative stress level was examined through enzyme-linked immunosorbent assay. Furthermore, plasmids with FOXM1 silencing were constructed using short hairpin RNA. The activity of activator protein-1 (AP-1) binding was measured via electrophoretic mobility shift assay. Reactive oxygen species (ROS) expression was detected using a dichlorodihydrofluorescein diacetate probe.

Results:

Treatment with the ROS inhibitor N-acetylcysteine ameliorated the degree of bone destruction, attenuated the inflammatory response, and mitigated oxidative stress in mice with diabetes periodontitis. Short hairpin-FOXM1 reduced the levels of FOXM1, increased the levels of C-Jun proto-oncogene and AP-1, enhanced AP-1 binding activity, and increased ROS production in the macrophage cells. sh-FOXM1 increased the mRNA and protein levels of tartrate-resistant acid phosphatase (TRAP), osteoclast-associated receptor (OSCAR), and nuclear factor-activated T-cell c1 (NFATc1). By contrast, JUN-small interfering RNA decreased the mRNA and protein expression of TRAP, OSCAR, and NFATc1. The silencing of FOXM1-regulated ROS production mediated AP-1 activation to promote macrophage osteoclast differentiation.

Conclusion:

FOXM1 plays a key role in diabetes periodontitis, and this study provides theoretical support for the clinical prevention and treatment of diabetes periodontitis in humans.
Challenges of biplane double-supported screw fixation technique for osteosynthesis of femoral neck fractures in the South Indian population
Authors: Middha Ish , Hegde Atmananda S. , Joseph Nitin , Mane Prajwal P. , Shetty Chethan B. , Rao Seetharama B.
Published: December 2024

Objectives:

Controversy exists in the management of neck of femur fractures. Insufficient reduction, unstable fixation, and poor–quality osteoporotic bone result in complications. This study was conducted to evaluate the functional and radiological outcomes of femoral neck fractures managed by the biplane double-supported screw fixation (BDSF) technique in the South Indian population, which is predominantly short profile.

Methods:

A prospective study was conducted among subjects aged (18–60 years) with femoral neck fractures over 2 years. All participants underwent fixation with the BDSF technique. Patients were followed up regularly for 12 months postoperatively. Harris hip score and radiological assessment were assessed. Complications such as screw backout, implant failure, and avascular necrosis (AVN) were assessed during the follow-up.

Results:

Of the 60 patients, 43 (71.7%) were males and 17 (28.3%) females. The mean age was 44 ± 11.2 years. Pair-wise post hoc test was statistically significant (P < 0.001). Harris hip scores decreased with the patient’s age increasing. The radiological union was noted in 49 cases. Eleven (18%) cases had non-union. Seven (11%) had AVN of the femoral head, four (6%) had screw backout with varus collapse, and 3 had (5%) varus mal-reduction.

Conclusion:

The functional outcomes of femoral neck fractures managed by the biplane BDSF technique were excellent. This technique was a safe, viable, and cost-effective option for neck of femur fractures in old and young populations. Further comparative studies and randomized control trials would be beneficial in providing evidence.
Prevalence of Gum Bleeding in Patient’s Taking Antiplatelet Therapy Reporting in Private Dental College, Lahore
Authors:   Azra Naheed Dental College, Lahore, Javed Mariyah , Arooj Zartashia , Manzoor Sadia , Haroon Kashif , Khan Saima Rubab
Published: December 2024

OBJECTIVE: The primary goal of this research was to evaluate the frequency of Gum bleeding in antiplatelet therapy patients visiting the Private Dental Hospital in Lahore.

METHODOLOGY: This Descriptive study was held in Chaudhary Muhammad Akram Dental Hospital in the period of May 2020 - November 2020. Total 120 study participants were selected after getting ethical approval. This selection was totally based on inclusion and exclusion criteria of the study from Chaudhary Muhammad Akram Dental Hospital. Complete history of the patients that fulfilled the inclusion and exclusion criteria of the study was taken and their intraoral examination done. Informed consent was taken from every enrolled participantIvy's method was used to take bleeding time.

RESULTS: 120 selected patients data was organized properly. The mean age of patient was 20-60 years. The mean bleeding time was 19.5 ± 5.2 min, Which was variable from 5 to 20 mins. Prevalence of gum bleeding was 32%. Out of 20 patients, 17 patients showed bleeding time > 20.5, 5 patients showed slight bleeding that stop on its own or with a few minutes of direct pressure). and 1 patient showed bleeding in urine that stopped after removal of anti-platelet therapy.

CONCLUSION: It was concluded that without holding the anti-platelet drugs, many dental surgical procedures can be done safely. KEYWORDS: Gum Bleeding, Anti-Platelet Therapy.