bluuebunny/crossref_metadata_2025_split huggingface dataset:
Risk factors and outcomes of critically ill pregnant COVID-19 patients: Experience from the first and second waves of the pandemic
Authors: Aditianingsih Dita , Hafidz Noor , Auerkari Aino Nindya , Cahyaningrum Zarah Tin , Leonard El Nissi , Annabelle Chrisella 
Published: February 2025

Abstract

Introduction
Understanding the association between risk factors and clinical outcomes of COVID-19 can lead to identifying suitable management strategies for reducing the mortality rate among maternal COVID-19 patients in the ICU.

Aim of the Study
This study aims to investigate the clinical outcomes and risk factors associated with pregnant and postpartum women diagnosed with COVID-19 and admitted to the intensive care unit (ICU) between May 2020 and September 2021.

Materials and Methods
This retrospective cohort study was conducted at the Universitas Indonesia Hospital. Secondary data was collected from the medical records to include all pregnant and postpartum women diagnosed with confirmed COVID-19 admitted to the hospital during the research period.

Results
The study included 113 patients and found that admission to the ICU, age, and gestational age significantly influenced clinical outcomes, with a mortality rate of 42.11% among ICU-admitted patients. Pre-existing comorbidities such as type-2 diabetes mellitus, congestive heart failure, and coronary artery disease were associated with ICU admission. Having at least one comorbidity was found to increase the mortality rate by six-fold.

Conclusions
The study emphasizes the importance of monitoring and evaluating maternal and fetal complications during COVID-19 infection, highlighting the need for multidisciplinary management involving intensivists, obstetricians, anesthesiologists, and infectious disease specialists. The findings underscore the significance of baseline health status in treatment planning and the potential for evidence-based interventions to improve maternal outcomes and pregnancy preservation. Further research is warranted to validate these results and enhance understanding of the underlying pathophysiology.
Manipulative techniques in the US Political media discourse on the example of the election debates by D. Vance and T. Waltz
Authors: Lugovskikh Kirill Maksimovich 
Published: February 2025

The article highlights the problems of political discourse, saturated with manipulative techniques that prevail especially in the media space and vividly illustrate the various manipulations of public consciousness in pre-election debates. The purpose of the study is to identify the means of manipulative techniques implemented in the US political media discourse. The material of the analysis is the debates of D. Vance and T. Waltz, which were held in the summer of 2024 and which are an actual example of the clash of two different positions on current and important issues related to US domestic and foreign policy. The real debate caused a great resonance among political scientists and the public due to the expertise and experience of D. Vance and T. Waltz, who, representing different points of view, stimulated a keen discussion of the debate in the media space. The methodological basis is the work of A. P. Chudinov, E. I. Sheigal, J. S. Altynbekova in the field of political discourse, as well as the ideas of A. N. Glushchenko, E. L. Dotsenko, O. C. Issers on issues of manipulative techniques in media discourse. It has been established that in American media discourse, speech manipulation often uses means of expression, such as political metaphors, hyperbole, allusions and comparisons, as well as various types of comic, which indicates the importance in the socio-cultural space of the linguistic aspect, which embodies the ideological objectives of political leaders. The novelty of the research lies in the results obtained, which give an idea of modern strategies and tactics of political communication used to achieve an effective translocative effect. Conclusions are drawn about the patterns of language development and change, and its dynamics in political rhetoric, which are a multifaceted process that includes various aspects of linguistics, sociology, and political science. In addition, language, as a means of communication, is a powerful tool of influence in the political media space.
The Image of the World in A. P. Platonov’s Short Story Nikita: A Mythopoetic Aspect
Authors: Skuridina S. A. , Kuzminykh E. O. , Bugakova N. B. 
Published: February 2025

Purpose. The article analyzes the story Nikita, which is important for the work of A. Platonov. It was originally named The Kind Whale and was included into the cycle Good People.Results. The authors identify the mythological picture of the world implementation features in the story. It is noted that the writer represents the reality through a perception of a five-year-old boy who gives animation, reason and feelings to visible objects around him, which are perceived by the hero through kinship terms, proper nouns, and other linguistic units mastered by this age. In Nikita's mythological picture of the world there are “his own” things, which are associated with the image of a house and a yard, fenced off from the “stranger” things. Being appointed daily to the role of master by his mother, Nikita must preserve the harmony of his world – to live quietly, that is, in kinship with “his” world, not allowing anyone else and not depriving of life named, and therefore animate, inhabitants. Violation of the maternal covenant has negative consequences: “one’s own” and “someone else’s” change places, instilling fear in Nikita, which he had not experienced before, because he lived in the world of objects and phenomena created and named by him, and therefore, endowed with life.Conclusion. The opposition “life – death” acquires an additional meaning from A. Platonov, including the opposition “kinship – orphanhood”: the one who is related to the world remains alive, and orphanhood is perceived as detachment from the world, loss of connection with it, which is equal to death.
Linguistic Hedges in Scientific Articles on Humanities
Authors: Boginskaya O. A. 
Published: February 2025

Purpose. By using a corpus of 120 Russian scientific articles on humanities the study analyzed linguistic actualizers of hedging as a metadiscourse strategy contributing to the efficient communication between an author and a reader. The novelty of the study is determined by scarcity of metadiscourse studies on articles in Russian, while it is relevant due to the ongoing attempts to re-interpret the nature of academic discourse, which has been considered as an interactional rather than informational space. This approach determines the need to study linguistic tools that help to construct an efficient dialogue with the reader and present research results in a way that is appropriate in the scientific community. The study aims to reveal lexical and lexico-syntactic hedges and determine their frequencies and functions in the corpus of scientific articles on humanities.Results. It was demonstrated that hedging is an integral part of academic discourse, where it mitigates the categoricalness of author’s claims by de-intensifying features under consideration, shifting the communicative focus to the emotional state or subjective nature of author’s opinions, indicating the non-absolute nature of his statements, or presenting the statements as possible ones.Conclusion. The analysis revealed hedging to be a crucial component of effective author-reader interaction, mitigating categorical statements and conveying a nuanced understanding of the research issue. Adverbs and verbs were the most prevalent lexical hedges, while introductory constructions played a significant role in the lexico-syntactic category. These findings emphasize the importance of hedging in creating a collaborative academic discourse space.
Word Formation and Borrowing of Person Nominations in Internet Discourse (Based on Speech Usage Data and Internet Language Dictionaries)
Authors: Zhirakovskaya A. A. 
Published: February 2025

Purpose. The article presents the results of a structural-semantic analysis of person nominations functioning in Internet discourse. Based on speech and lexicographic sources, the composition of the card index was determined – 145 slang personal nouns. The analysis of speech material was carried out within the framework of the derivational paradigm, which involves the complex use of several methods – morphemic, morphonological, word-formational and semantic.Results. The analysis of lexical material allowed to establish the main ways of replenishing the lexicon of person nominations. Thus, 35.8 % of units are borrowings, and 64.2 % are Russian derivatives. Almost all borrowings in the card index (50 out of 52 lexemes) are Anglicisms; cases of borrowing from the Japanese language are unique. A third of the units in in the card index (44 words) are neolexemes that is, new phonetic units with new semantics The formation of person nominations on the basis of the Russian language occurs through semantic derivation, affixation, compounding, fusion, and phonetic truncation.Conclusion. Suffixation turns out to be the most productive way of producing personal nouns (the share of suffixal derivatives is 66 %, 13 different formants form neologisms with the meaning ‘person’ have been identified). The other methods of word formation listed earlier are less relevant in Internet discourse.
КИЗИКСКИЙ СТАТЕР ИЗ МЕОТСКОГО ПОСЕЛЕНИЯ МАРЬЯНСКОЕ 1 В НИЖНЕМ ПРИКУБАНЬЕ
Authors: Абрамзон М.Г. , Плеханов Ю.В. , Зубавичус Е.Я. , Сапрыкина И.А. 
Published: February 2025

При археологических раскопках меотского поселения Марьянское 1 (Красноармейский район Краснодарского края) в 2024 г. найден статер Кизика с ти пом Силена, заглядывающего в амфору (ср. Baldwin Brett, 1955. No. 1507). Статер да тируется 460‒400 гг. до н. э. Редкая находка свидетельствует о вовлечении меотских сельских поселений Нижней Кубани в масштабные поставки зерна по р. Кубань на Боспор, откуда оно экспортировалось, прежде всего, в Афины. В меотские же по селения поступал греческий импорт, шедший через Фанагорию и далее по водному пути в глубинные районы Прикубанья.
The paper publishes a rare numismatic find. In 2024, during archaeological excavations at the Maeotian settlement of Maryanskoye 1 (Krasnodar Territory, 285 КСИА. Вып. 276. 2024 г. Krasnoarmeyskiy district), a Cyzicenestater was discovered It bears an image of Silenus peering into an amphora (cf. Baldwin Brett, 1955. No. 1507). The stater dates back to 460‒400 BC. A rare find indicates the involvement of the Lower Kuban Maeotian rural settlements into large-scale grain trade along the Kuban River to Bosporus, from where it was exported, first of all, to Athens. In return, the Maeotian settlements received Greek goods that passed via Phanagoria and further along this waterway to the inland areas of the Kuban region.
ПРЕДВАРИТЕЛЬНЫЕ РЕЗУЛЬТАТЫ КОМПЛЕКСНОГО АНАЛИЗА КОЛЛЕКТИВНОГО ПОГРЕБЕНИЯ 631 АНТИЧНОГО НЕКРОПОЛЯ ВОЛНА 1
Authors: Сударев Н.И. , Шведчикова Т.Ю. , Мимоход Р.А. , Сапрыкина И.А. 
Published: February 2025

В статье публикуются первые результаты комплексного анализа ма териалов из сырцовой гробницы (погребение 631), из которой происходят костя ки 11 индивидов, с богатым погребальным инвентарем. Гробница функционировала в период с 30-х гг. IV в. до н. э. по первую четверть III в. до н. э.; одной из возможных атрибуций этого погребального сооружения является отнесение его к категории семейных усыпальниц. Такая компактная выборка антропологического материала, несмотря на плохую сохранность костей, дает прекрасную возможность провести необходимые аналитические исследования для дифференциации населения, оставившего некрополь Волну 1. Был проведен изотопный анализ соотношений δ13C и δ15N, 87Sr/86Sr костной ткани для 7 индивидов; шесть из которых, судя по полученным результатам, являются представителями автохтонного населения, в том числе самый первый из захороненных. Последняя из погребенных в данной усыпальнице, возможно, является представителем другой группы населения, наиболее близкие параллели которым имеются в материалах из с. Веселого (Адлерский район).
The paper publishes the first results of the integrated analysis of materials from a mud-brick tomb (grave 631) that contained skeletons of 11 individuals with rich grave goods. The tomb functioned from the 30s of IV century BC to the first quarter of the III century BC. One of the possible interpretations of the burial construction is the variant of a family sepulcher. The bones were of poor state of preservations, yet this com pact selection of anthropological materials offers a great opportunity to conduct necessary analytical studies for differentiation of the population that used the Volna 1 necropolis. The study included the stable isotope analysis of the 15N/13C ratio and the 87Sr/86Sr ratio of the bone tissue for 7 individuals. Based on the results obtained, nine buried individuals are local, including the individual that was buried first. The latest individual buried in this 437 КСИА. Вып. 276. 2024 г. sepulcher is a representative of a different population group that shows the closest parallels among the human remains from the village of Veseloe (Adler district).
Downscaling GRACE Data for Improved Groundwater Forecasting Using Artificial Neural Networks
Authors: Awawdeh Abdel Rahman M. , Yasarer Hakan , Ghaffari Zahra , Yarbrough Lance D. 
Published: February 2025

This study introduces a dual-phase approach utilizing Artificial Neural Networks (ANNs) to overcome the challenges of groundwater monitoring at regional scales. Traditional well-based methods provide limited spatial coverage, while GRACE satellite data, despite its value for large-scale hydrological analysis, suffers from low spatial resolution (~300 km), limiting its application for local-scale assessments. Existing downscaling methods such as geographically weighted regression and Random Forests are computationally intensive and often lack adaptability to complex groundwater systems. In this study, Phase 1 refines GRACE data using ANNs to achieve a 4×4 km spatial resolution, addressing the resolution challenge for regional applications. Phase 2 integrates the downscaled GRACE data with groundwater well observations and climatic factors to predict groundwater levels with high accuracy (R² = 0.9885). This dual-phase framework demonstrates significant improvements over existing methods, providing an efficient and scalable solution for groundwater monitoring in hydrologically complex regions. The findings highlight the potential of machine learning to enhance groundwater resource management, particularly in addressing water scarcity and climate variability challenges. Doi: 10.28991/CEJ-2025-011-02-01 Full Text: PDF
The Effect of Additional Baffle Plates on Double-Stage Gravitational Water Vortex Turbine
Authors: Prasetyo Ari , Rovianto Eki , Adika Dimas , Maulana Reza , Septiyanto Muhamad D. , Budiana Eko P. , Hadi Syamsul , Prabowoputra Dandun M. 
Published: February 2025

A Gravitational Vortex Water Turbine (GWVT) is an appropriate device to harness the kinetic energy of water to convert it into rotational mechanical energy in low-head. The water flow is directed into a circular basin, which can produce a vortex and can rotate the turbine blades. Turbine performance is influenced by the shape of the blade, so an optimal blade shape is required. Turbine performance is influenced by the shape of the blades, which can rotate optimally. This study aims to determine the effect of adding baffle plates in the blade on the performance of two-stage GWVT using experimental methods. The variation used is the proportion of baffle plate on the runner in the first stage with variations without baffle plate, 25%, 50%, 75%, and 100%. The data taken in the test is the torque and rotation at each additional blade plate. Torque measurement uses a rope brake system, and rotation measurement uses a tachometer. The results of the study showed that the addition of a 50% baffle plate in the first stage can capture the energy of the water vortex more optimally. A baffle plate can increase efficiency by up to 23.15% compared to the blade without the addition of a baffle plate. Doi: 10.28991/CEJ-2025-011-02-011 Full Text: PDF
Modified Asphalt Mixtures Incorporating Pulverized Recycled Rubber and Recycled Asphalt Pavement
Authors: Cubas Marlon , Correa Evelyn , Benavides Wilmer , Suclupe Robert , Arriola Guillermo 
Published: February 2025

In the search to achieve eco-friendly techniques that ensure significant improvements in the properties of hot mix asphalt (HMA), recycled materials are being considered with greater application, coming from the pavement itself and also from artificial elements such as rubber. In this sense, the objective was to study the behavior of the mechanical and microstructural properties of HMA by adding pulverized recycled rubber (PRR) and recycled asphalt pavement (RAP), taking into account a control group without any addition and an experimental group with PRR and RAP. The research involved the production of briquettes with the modification of asphalt cement (AC) using doses of 3%, 5%, and 7% of PRR as a replacement by weight of AC. Then, the optimal percentage of PRR was combined with 10%, 20%, and 30% RAP as a partial substitute for the coarse aggregate. It should be noted that in both aspects, the thermogravimetric and microstructural performance of the asphalt mixture was evaluated. Subsequently, the results obtained indicate that the HMA is MAC-1 type, and it was established that the combinations of PRR and RAP significantly influence the physical-mechanical properties of the HMA with 3%PRR+10%RAP. On the other hand, the findings of the PRR thermogravimetric analysis show that the degradation of HMA occurs at 350°C, causing the loss of both mechanical and microstructural properties. However, infrared spectroscopy and scanning electron microscopy revealed that the PRR adheres correctly with the aggregate, improving the morphology and texture of the HMA. Doi: 10.28991/CEJ-2025-011-02-02 Full Text: PDF
A Theoretical Pore Network Model for the Soil–Water Characteristic Curve and Hysteresis in Unsaturated Soils
Authors: Gómez Angela V. 
Published: February 2025

This study presents a novel approach to modeling the soil–water characteristic curve in unsaturated soils, employing Monte Carlo simulations to capture the complex behavior of the pore network. The primary objective is to develop an alternative method to represent the hysteretic nature of the soil–water characteristic curve, which is critical for understanding unsaturated soil behavior in various engineering applications. The proposed approach conceptualizes soil as a network of interconnected pores, where each pore interacts with its nearest neighbors. Monte Carlo simulations are used to model the pore-filling distribution as a function of pressure differences during drying and wetting cycles. The model effectively reproduces the characteristic hysteresis curves associated with the hydraulic and mechanical processes in unsaturated soils. A key finding is that the simulated soil–water characteristic curve captures the impact of pore-scale interactions and reflects the complex hysteresis effects observed in experimental data. The novelty of this work lies in integrating pore network modeling with Monte Carlo simulations, addressing limitations of traditional models and offering a more accurate representation of unsaturated soil behavior. While the model has not yet undergone experimental validation, it provides valuable insights into the dynamics of soil moisture retention and serves as a foundation for future experimental testing and refinement of soil–water models. Doi: 10.28991/CEJ-2025-011-02-021 Full Text: PDF
Seismic Assessment of First and Second Secant Stiffness for the Masonry Infilled RC Frame
Authors: Galatage Abhijeet A. , Patil Satish B. 
Published: February 2025

The seismic resilience of composite concrete frame structures composed with masonry infill walls, is a critical research area due to its impact on structural performance during earthquakes. Most studies on reinforced concrete (RC) frames focus on key seismic response parameters like lateral strength and overall hysteretic behavior under cyclic loading, often analyzing the first and second secant stiffness throughout the seismic loading process. The present study examines the first and second secant stiffness as the structural performance during earthquake. A series of experimental tests are performed on half scaled RC frames filled with autoclaved aerated concrete (AAC) block masonry with external dimensions of 1.5 m x 1.5 m. These frames are subjected to displacements ranging from 2 mm to 6 mm and frequencies between 1 Hz and 7 Hz for simulating earthquake loading conditions. The experimental program aimed to evaluate the resistance of structure to earthquake loading by using dual mode of testing viz. displacement and frequency-controlled loading protocol. During test the RC frame responded elasto-plastically due to minor cracking at block joints and localized yielding at the interface between the frame and the infill at lower frequencies and displacements. Conversely the degradation of both first and second secant stiffness values became more pronounced at higher frequencies. The first secant stiffness decreased by 73.4%, while the second secant stiffness showed increase of 24.6% at a displacement of 4 mm and a frequency of 4 Hz with respect to the previous loading cycle which indicated the complex stress redistribution and temporary stabilization. Doi: 10.28991/CEJ-2025-011-02-05 Full Text: PDF
Flexural Behaviour of Precast Lightweight Concrete Sandwich Slabs With Demountable Bolted Steel Shear Connectors
Authors: Al-Kerwei Rana H. , Osman S. A. , Al-Zand Ahmed W. , Hanoon Ammar N. 
Published: February 2025

A concrete slab is a fundamental element and contributes the highest weight in structural buildings. In this paper, a new type of sandwich slab consisting of two layers of lightweight concrete and demountable steel connectors is proposed in a new attempt to reduce the weight of the floors within the structure and apply a simpler and faster approach to connecting the layers of sandwich panels. The structural effects of the proposed connectors on Precast Lightweight Concrete Sandwich Slab (PLCSS) are evaluated experimentally and theoretically in terms of strength, stiffness, degree of composite action, and usability for floor construction. The behaviors of six PLCSS specimens subjected to four-point loads were investigated, studying the effects of varied parameters such as different numbers, arrangements, and shapes of demountable steel connectors (I, V, and X connector shapes) fastened with steel bolts, in addition to one solid concrete slab as a reference specimen. The panels' performance in this structural system was evaluated by measuring the degree of composite action using load, displacement, stress, and neutral axis methods. Based on the experimental results, the slab panels exhibited composite panel behavior until the point of failure. Under flexural loads, the panel behaved similarly to that of a solid one-way slab; crack patterns appeared in one direction. The specimens with IC, VC, and XC showed different load capacity values, ranging from 22.74 kN to 50.55 kN; these values depend on the types of shear connectors and their numbers in the sandwich panels. Using V and X connectors enhances the composite action between layers, increasing the shear demand and making the shear failure more likely. It can be concluded that demountable shear connectors can transfer shear between the two concrete wythes, resulting in a composite panel with structural integrity, a lighter weight, and satisfying ACI specifications for floor applications. Doi: 10.28991/CEJ-2025-011-02-06 Full Text: PDF