bluuebunny/crossref_metadata_2025 huggingface dataset:
Myocardial Protection in Combined Mitral-Aortic-Tricuspid Valve Diseases Correction under Cardiopulmonary Bypass
Authors: Gurtovenko Oleksii M. , Popov Volodymyr V. , Mazur Andriy P. , Bolshak Oleksandr O.
Published: December 2024

The aim. To determine the optimal option for administering cardioplegic solution for myocardial protection in the correction of combined mitral-aortic-tricuspid valve diseases (CMAT) under cardiopulmonary bypass.
Materials and methods. We analyzed the results of surgical treatment of 251 patients with CMAT who were operated on at the National Amosov Institute of Cardiovascular Surgery from 01/01/2010 to 01/01/2023 and in whom 3 ways of applying crystalloid cardioplegic solution was used. There were three comparison groups: group A with antegrade (n = 47), group B with retrograde (n = 56), and group C with combined ante-retrograde administration of crystalloid cardioplegic solution (n = 148).
Results. Of the 251 operated patients, 10 died at the hospital stage (mortality rate 3.9%). The level of creatine kinase-MB (CK-MB) (U/L) at cross-clamping time ≤90 minutes for the groups was as follows: 72.3 ± 7.1 (p < 0.05) in group A, 64.0 ± 8.2 in group B, 67.5 ± 7.7 in group C. The level of CK-MB (U/L) at cross-clamping time ≥151 minutes for the groups was as follows: 115.2 ± 18.7 in group A, 97.4 ± 15.8 in group B, 96.3 ± 16.2 in group C. The dynamics of echocardiographic parameters at the stages of treatment were as follows. Group A (mortality rate 4.3%): left ventricular (LV) end-systolic index (mL/m2): 69.1 ± 13.5 (before surgery), 60.3 ± 9.7 (after surgery); left ventricular ejection fraction (LVEF): 51% ± 9% (before surgery), 54% ± 7% (after surgery). Group B (mortality rate 3.6%): LV end-systolic index (mL/m2) 66.5 ± 12.1 (before surgery), 57.4 ± 8.6 (after surgery); LVEF: 50% ± 8% (before surgery), 56% ± 7% (after surgery). Group C (mortality rate 4.1%): LV end-systolic index (mL/m2) 67.8 ± 11.3 (before surgery), 56.2 ± 8.9 (after surgery); LVEF: 50% ± 7% (before surgery), 56% ± 7% (after surgery). The dynamics of echocardiographic parameters at the stages of treatment were better in groups B and C than in group A (p < 0.05). Hospital mortality was lower in groups B and C than in group A (p > 0.05).
Conclusions. The three types of cardioplegic solution delivery used in complex pathology of surgical treatment of CMAT demonstrated the adequacy of heart protection using crystalloid cardioplegia. Taking into account certain advantages in the dynamics of restoration of the LV contractility and increase in the level of CK-MB (U/L) on the second day after surgery, groups C and B should be considered optimal compared to group A (p < 0.05). The widespread, branched venous system of the heart allows for adequate use of the retrograde route of cardioplegia delivery and complete penetration of cardioplegic solution into the heart cells, which provides a better clinical effect compared to the isolated antegrade route of crystalloid cardioplegia delivery.
Long-Term Results of Stenting of Left Main Coronary Artery Lesions: Experience of One Hospital
Authors: Levchyshyna Olena V. , Salo Sergii V. , Aksonov Yevhenii V.
Published: December 2024

The aim. To study the effectiveness of left main coronary artery (LMCA) stenting in patients with coronary heart disease and to optimize the choice of percutaneous coronary intervention technique based on the experience of one clinic.
Materials and methods. The study, which was conducted at the National Amosov Institute of Cardiovascular Surgery of the National Academy of Medical Sciences of Ukraine, included 107 patients with LMCA disease, who underwent stenting from January 2019 to December 2023. During the study, the patients were divided into two groups. One group underwent stenting using the single-stent method (44 patients, 41.1%), while the other group underwent stenting using the double-stent method (63 patients, 58.9%).
Results. In the group of surveyed patients after stenting, an analysis was conducted regarding adherence to drug therapy and achievement of target lipid spectrum levels. It was found that one of the reasons for the active progression of atherosclerosis can be considered low adherence to drug therapy. A group of patients with recurrence of angina after stenting, the cause of which was restenosis in the stented segment, was analyzed. In the analysis of the frequency of repeated interventions in patients with hemodynamically significant lesions of the LMCA, who initially underwent stenting, it was found that 24.5% of patients (n = 24) underwent stenting again at the second visit and only 4 patients (4.1%) underwent bypass surgery, which is statistically significant (p ≤ 0.001).
Conclusions. LMCA stenting is an effective way of treating patients with hemodynamically significant damage to it (effectiveness of the technique is 71.4%). Recurrence of angina was observed in 28 patients (28.6%). Both single-stent and double-stent procedures are effective: recurrence of angina was observed in 13.3% and 15.3% of cases, respectively. One of the main reasons for the recurrence of angina pectoris is the progression of atherosclerosis in new locations (39.3%) and restenosis in stenting segment (39.3%).
Diagnosis and Optimal Surgical Treatment Strategy Selection for Asymptomatic Large Cardiac Myxomas: Review of Modern Approaches and Own Clinical Case Presentation
Authors: Osaulenko Vyacheslav V. , Hubka Viktor O. , Chmul Karina O. , Nakonechnyi Serhii Yu. , Budagov Rasim I.
Published: December 2024

Cardiac myxoma (CM) is the most common primary tumor of the heart and can be asymptomatic for a long time. CMs have an increased risk of systemic embolization, intracardiac obstruction, transient ischemic attacks, and strokes, potentially leading to patient disability and/or sudden cardiac death.
The aim. To highlight the data of modern scientific literature and demonstrate a case of plastic reconstruction of the heart after resection of a large tumor.
Materials and methods. We report a case of incidentally discovered left atrial myxoma in a 67-year-old woman with no significant medical history. Transthoracic echocardiography revealed a large mass located in the left atrium. An open surgical intervention was performed, during which the giant CM was completely removed. Histopathological examination confirmed the diagnosis. The patient was discharged on the 7th day of the postoperative period without any complaints. Also, we carried out a comprehensive search and analysis of previously published cases of asymptomatic myxomas and methods of their surgical treatment in the scientific literature of the main electronic databases.
Results. In our proposed report, a satisfactory clinical outcome was obtained in a patient with giant myxoma who underwent open cardiac surgery. According to the current literature, transthoracic echocardiography, computed tomography and magnetic resonance imaging of the heart are the gold standards for the diagnosis of heart neoplasms, which corresponded to our diagnostic algorithm. In the opinion of most specialists, the minimally invasive approach is a promising and attractive treatment method for surgeons, however, a complete median sternotomy remains the standard approach in patients with CMs.
Conclusions. Asymptomatic CM is a rare incidental finding with a high probability of serious adverse cerebral and cardiovascular events. Early diagnosis of CM is crucial to prevent life-threatening complications, and the most valuable tool is transthoracic echocardiography. The strategy of surgical treatment varies depending on their size and anatomical localization, in particular, resection of large and septal myxomas is usually performed through median sternotomy.
Closed Cardiac Trauma: Literature Review and Case Series of Combat Trauma
Authors: Petrushenko Viktoriia V. , Ruzhanska Vita O. , Buriak Roman V. , Grebeniuk Dmytro I. , Holivska Nataliia V. , Sidorov Andrii A. , Sobko Vadym S. , Stoika Vadym I.
Published: December 2024

The aim. Analysis of the causes, diagnosis and treatment methods of closed heart injuries through the examples of literary sources and our own clinical cases.
Russia’s full-scale invasion of Ukraine led to massive hostilities. This war not only changed the geopolitical situation in Europe, but also presented new challenges to the medical community, particularly in the field of military medicine. Among many types of combat injuries, heart injury, which can be both open and closed, requires special attention. Although both types of injuries are life-threatening, the closed heart injury becomes more relevant in the conditions of modern warfare. A closed heart injury often accompanies any chest injuries, has a hidden course, and its real prevalence exceeds the number of diagnosed cases. Among the closed injuries of the heart, concussion is accompanied by the least damage to the structures and the mildest consequences, while heart rupture has an intensive clinical manifestation, an extremely difficult course, and often fatal consequences. Most often, a heart bruise occurs with a chest injury. The proper diagnosis of heart bruise at the pre-hospital stage is accompanied by difficulties. They are associated with the conditions of the history taking and physical examination of the wounded person. The mentioned conditions include the lack of time, impaired consciousness of the victim (for example, when combined with a craniocerebral injury), lack of additional laboratory and instrumental diagnostic methods as well as different levels of training of medical personnel. The article presents a detailed description of the types of closed heart trauma, clinical, laboratory and instrumental characteristics of each type, as well as a generalized scheme of treatment tactics. In addition, three clinical cases of heart bruise with different severity of clinical manifestation are provided.
Conclusion. In the conditions of modern warfare, a closed heart injury is more relevant than an open type of the combat heart trauma. This requires military and civilian physicians to pay more attention to the possible presence of this type of injury, to improve diagnostics and treatment approaches, and to develop effective field care protocols.
Decellularized Matrix Scaffolds for Vascular Transplantation: Addressing Immunogenicity, Sterilization, and Current Strategies for Long-Term Storage
Authors: Shevchenko Yevhen V. , Liadova Tetiana I. , Hladkykh Fedir V. , Matvieienko Mariia S. , Chyzh Mykola O. , Komorovsky Roman R.
Published: December 2024

Cardiovascular diseases are the leading cause of death globally, with their incidence rising rapidly. For obstructive cardiovascular diseases, definitive treatment options include surgical interventions such as vascular stenting, replacement surgery, or vascular bypass. Decellularized extracellular matrix scaffolds, designed through tissue engineering, hold great potential in addressing the donor shortage issue.
The aim. To conduct a comparative analysis of sterilization methods for decellularized matrix scaffolds used in vascular transplantation, based on information from open sources.
Materials and methods. Publications were selected from the databases PubMed, Clinical Key Elsevier, Cochrane Library, eBook Business Collection, and Google Scholar, focusing on sterilization methods for decellularized matrix scaffolds. The literature search used keywords such as tissue engineering, decellularization, extracellular matrix, sterilization, gamma sterilization, and acellular transplant.
Results. The transplantation of synthetic scaffolds into the human body triggers an immune response to foreign materials. Ideal sterilization or disinfection for decellularized extracellular matrix should effectively eliminate microorganisms while ensuring the sterilized material is non-toxic and preserves physical and chemical properties, as well as biological activity of the biomaterial. Radiation sterilization primarily involves gamma irradiation from Cobalt-60 isotopes and electron beams generated by electron accelerators. In addition to sterilization, decellularized tissue constructs require long-term preservation methods, including cryopreservation, lyophilization, and the use of antibiotics and antifungals stored at –20 °C to –80 °C.
Conclusions. Decellularized tissue is receiving significant attention as a potential biological scaffold, as it retains the structure and functions of the extracellular matrix. The application of sterilization methods, such as gamma irradiation from Cobalt-60, ensures deep penetration and preservation of physical properties of the materials.
TAVI Procedure Accesses: Our Experience and Comparison of Transapical Versus Transfemoral Routes
Authors: Yemets Glib I. , Horbatiuk Volodymyr I. , Maksymenko Andrii V.
Published: December 2024

There is no denying the fact that surgical aortic valve replacement has been considered as the “gold standard” of treatment for patients with aortic stenosis (AS). However, approaches are changing. A particularly influential event was the first successful transcatheter aortic valve implantation (TAVI) from an antegrade transseptal approach in 2002.
The aim. To evaluate the results of TAVI performed using transapical and transfemoral access in patients over 60 years of age with severe AS.
Materials and methods. This single-center study was performed at the Ukrainian Children’s Cardiac Center in the period from 2016 to 2024. The study included 105 consecutive patients with a confirmed diagnosis of severe AS. All the patients met eligibility criteria, received a full package of basic and additional examinations and, based on the decision of the heart team led by a cardiac surgeon, were verified for the TAVI procedure from the appropriate access: transfemoral access in group 1 (n = 54 patients), transapical access in group 2 (n = 51 patients). Patients who had previously undergone aortic valve replacement were excluded from the study.
Results. All the patients were verified as high surgical risk patients according to the STS Adult Cardiac Surgery Risk Calculator, EuroSCORE II, ASA scales. Intraoperative mortality was 0.95% (n = 1). The postoperative period of hospital stay (from the time of operation to discharge) was 11.13 ± 10.45 days (from 3 to 54) in group 1 and 12.65 ± 11.68 days (from 0 to 71) in group 2. The procedure was performed under general anesthesia in both groups. Duration of the operation was 147.59 ± 113.46 minutes (from 110 to 810) in group 1, and 168.31 ± 93.61 minutes (from 76 to 690) in group 2. Early outcomes, assessed by echocardiography and aortography, were satisfactory in all the patients. In group 1, minimal paravalvular insufficiency was detected in 92.6% (n = 50), moderate paravalvular insufficiency was observed in 7.4% (n = 7) patients. In group 2, minimal deficiency was found in 90.2% (n = 46), moderate in 9.8% (n = 5) patients.
Conclusions. Early and long-term postoperative outcomes were satisfactory in both groups. There was no statistically significant difference between the groups in the level of complications. However, the pattern of complications differed between the groups: the transfemoral group had a lower rate of postoperative bleeding and cerebrovascular disorders, while the transapical group had a lower rate of pacemaker implantation and prosthesis repositioning.
Membentuk karakter Profil Pelajar Pancasila pada siswa SD melalui pembelajaran IPA
Authors: Pradipta Hestriana , Rochmiyati Siti
Published: December 2024

Tujuan dari penelitian ini adalah untuk mengkaji pembentukan karakter profil pelajar pancasila pada siswa SD melewati pembelajaran IPA. Penelitian ini menggunakan metode kualitatif deskriptif. Teknik pengumpulan data pada penelitian ini menggunakan adalah dengan cara mengumpulkan dokumen dan literatur sebagai sumber data. Dalam upaya pengumpulan data, dilakukan studi literatur dengan mencari sumber-sumber tertulis seperti majalah, arsip, buku, dokumen, jurnal, dan artikel yang berkaitan dengan pembentukan karakter profil pelajar Pancasila pada siswa SD melalui pembelajaran IPA. Analisis data dilakukan secara interaktif dan berkelanjutan hingga mencapai titik jenuh. Tahapan analisis data mencakup display data, reduksi data, dan verifikasi serta kesimpulan. Hasil dari penelitian ini adalah Pembelajaran IPA (Ilmu Pengetahuan Alam) dan pembentukan karakter profil pelajar Pancasila memiliki keterkaitan dan saling mempengaruhi. Pembelajaran IPA membantu pembentukan karakteristik sesuai dengan nilai-nilai Pancasila. Selain itu, pembelajaran IPA juga membantu siswa untuk memperoleh pemahaman tentang nilai-nilai Pancasila dan mengimplementasikannya dalam kehidupan sehari-hari.
Investigating the Impact of CALL on EFL Students' Speaking Skills at Islamic Boarding School: A Mix-Method Approach
Authors: Safira Timur Nona , Asari Slamet , Ma'ruf Nirwanto
Published: December 2024

This study examines the impact of computer-assisted language learning (CALL) on speaking fluency and confidence among EFL students at Al-Mizan Islamic Boarding School in Indonesia. A mixed-method approach was employed, with quantitative data collected through pre-tests and post-tests and qualitative data through interviews and observations. Speaking fluency was measured based on speech flow, pace, continuity, naturalness, and intonation, while confidence was measured based on willingness to participate, composure, eye contact, vocal clarity, and engagement. Results revealed significant improvements, with the average fluency score increasing from 55.46 to 75.67 and confidence score from 58.63 to 80.58 after an eight-week CALL intervention. Qualitative findings highlighted that CALL’s interactive features and real-time feedback supported students in improving their pronunciation and reducing speaking anxiety. This study underscores the effectiveness of CALL in enhancing speaking proficiency and fostering learner autonomy, particularly in EFL contexts with limited speaking opportunities. While the findings are promising, future research with larger samples and extended intervention periods is recommended to examine the long-term impacts of CALL. These results advocate for integrating CALL into language education to create more engaging and supportive learning environments that promote fluency and confidence development in EFL learners.
TÜRKİYE VE SEÇİLİ ÜLKELERİN YARGI ETKİNLİĞİNİN VZA İLE KARŞILAŞTIRILMASI
Authors: Yüksel Yıldırım Cevriye
Published: December 2024

: İnsanlığın varoluşundan bu yana adalet kavramı, önem atfedilen bir kavram iken özellikle insanların topluluk halinde yaşamalarının bir sonucu olarak önemi daha da artmıştır. Topluluk halinde yaşamanın bir sonucu olarak devlet olgusu ortaya çıkmış ve devlet düzeni oluşmaya başlamıştır. Devlet düzeninin oluşması ile adaleti sağlamak devletlerin temel görevi haline gelmiştir. Toplumun ihtiyaçlarını gidermek amacıyla üretilen adalet, sağlık, savunma, güvenlik, eğitim hizmetleri gibi hizmetler ise kamu hizmetleridir. Kamusal mallar piyasada üretilmeyen ve dışlanamazlık özelliğine sahip olan mallardır. Yani bir mal üretildiği toplumda olan herkes malın maliyetine katlanmaksızın o malı kullanabilmektedir. Dışlanamazlık özelliğinin olduğu mal ve hizmetlerden olan eğitim, sağlık ve güvenlik hizmetlerinden bedava yararlanmak isteyenleri dışlamak mümkün olmamaktadır. Kamusal malların bu özelliğinden dolayı tüketicilerin kamusal mallara ödeyecekleri miktar bilinmemektedir. Bu durum ise kamusal malların piyasada ideal seviyelerde üretilmemesine ya da hiç üretilmemesini yol açmaktadır. Bu nedenle devlet kamusal malların üretiminde özel teşebbüsler yerine kendisi bizzat üretimde yer almaktadır. Bu anlamda devletler kamu hizmeti üretimi ve sunumunu gerçekleştirmek zorundadır. Kamusal mal ve hizmetlerden birini de adalet hizmetleri oluşturmaktadır. Adaletin sağlanmasında hukuk kurallarına ve bu kuralları uygulayacak kurum ya da birimlere ihtiyaç duyulmaktadır. Bu kurumların performanslarının değerlendirilmesinde bütçesel rakamlar, personel sayıları, dava sayıları ve davaların görülme süreleri gibi adalet hizmetlerine yönelik değişkenlerden yararlanılmaktadır. Bu çalışmada Türkiye ile AB üyesi olan veya verisine sürekli erişim sağlayabildiğimiz 18 ülkenin adalet hizmetlerinden olan yargı hizmetlerindeki etkinliklerinin karşılaştırılması yapılmıştır. Bu bağlamda 19 ülkenin 2016, 2018 ve 2020 yılları için 9 adet girdi ve 4 adet çıktı değişkenlerinden oluşturan veri seti ile Veri Zarflama Analizi (VZA) uygulanmıştır. VZA için girdi ve çıktı değişkenlerine bağlı oluşturulan 4 modelin tamamında 2016 yılı için Bosna Hersek ve Romanya, 2018 yılı için Bosna Hersek, Avusturya, Letonya ve Romanya, 2020 yılı için Çekya, Macaristan, İrlanda ve Letonya’nın etkin olduğu sonucuna ulaşılmıştır. Türkiye’nin 2016, 2018 ve 2020 yılları için yapılan VZA sonuçlarına göre üç yıl için Model 3 ve Model 4’te etkin olduğu sonucuna ulaşılmıştır.
THE DYNAMICS OF ACCEPTANCE AND RESISTANCE TO PRODUCTIVE WAQF: A Case Study of Mathali’ul Anwar and Al-Ishlah in Lamongan
Authors: Musoffa Azzam , Albanna Muhammad Jihad , Sabaruddin Rasfiuddin , Lutfiani Hilda , Wardi Syah
Published: December 2024

This study aims to compare two productive waqf approaches in two boarding schools in Lamongan, namely Mathali'ul Anwar and Al-Ishlah through the lens of Max Weber's rational theory. The research method in this study uses a qualitative approach with data collection through interviews to understand the practice of productive waqf in both institutions. It was found that the dynamics of resistance to the application of productive waqf in Mathali'ul Anwar were then analyzed with theory of rationalization and the researcher concluded that the incident was in accordance with the concept of instrumental rational (zweckrational). The resistance to productive waqf found in Al-Ishlah can be understood in accordance with value-based rational concept (wertrational). This is concluded from the view of Kiai Khotib in developing productive waqf at Mathali'ul Anwar which is implemented systematically so that there is a change in social conditions in the form of acceptance of the waqf practice. Unlike the case in Al-Ishlah, Kiai Dawam's strong stance on the value of education causes other values to be displaced, including productive waqf based on economic independence. In addition, the results of this study also prove that James Peacock's typology of santri is refuted, that division of santri into reformist and traditionalist santri does not apply in this productive waqf case.
Research of local network reliability indicators during the implementation of the port aggregation scheme
Authors: Sytnikov Roman , Lemeshko Valentyn , Krepko Alla , Stadnik Volodymyr
Published: December 2024

The article is devoted to a relevant scientific and applied problem related to the improvement of potential solutions for increasing the reliability of local networks by means of link (port) aggregation on switches. The article presents a study aimed at a comparative quantitative analysis of the reliability level of a local network in which the mechanism of link (port) aggregation is implemented. The technological task is formulated in the form of a mathematical model for calculating the probability of network uptime with a port aggregation scheme. The boundary values of network reliability indicators are calculated depending on the level of reliability of individual links and the implemented port aggregation scheme, for which the code in MATLAB is written and the corresponding graphs are constructed. It is established that at the level of local networks, the implementation of the mechanism of link (port) aggregation is an effective means of increasing their performance and reliability. The conditions under which this scheme is most appropriate are substantiated. It is demonstrated that in these conditions when implementing the aggregation scheme, it was advisable to limit ourselves to four links. The study results have confirmed the effectiveness of the proposed solution for aggregating links (ports) and allowed us to formulate general recommendations related to the implementation of reliable routing in practice. Consequently, it is proposed to use four aggregated links, provided that the probability of link failure is between 0.5 and 0.7. If the probability of link failure exceeds 0.7, it is advisable to limit the number of aggregated links to two. Further increases in the number of aggregated links affect the cost and performance of the network but do not improve reliability.
Research of methods for counteracting Transport Layer attacks in information and communication networks
Authors: Momot Vladyslav , Porokhniak Volodymyr
Published: December 2024

The work analyzes the most common threats and defines network security objectives, as well as describes quantitative and qualitative indicators of network security, classified into five categories. The work contains an analysis of attacks targeting all seven layers of the Open Systems Interconnection (OSI) model and provides their common features and mechanisms, attack examples, and tools used to carry them out. A review and comparative characteristic of methods for countering transport layer attacks is performed, as well as an experimental study of the effectiveness of the selected methods for countering attacks using the example of the TCP PUSH ACK Flood attack. Particular attention is paid to the transport layer due to its popularity among cybercriminals who carry out distributed denial-of-service attacks using the shortcomings of the TCP and UDP protocols. After studying the theoretical information about the transport layer of the OSI model, special attention is paid to the mechanisms of the TCP protocol, in particular, the selected methods of countering attacks at the transport layer are studied, and their advantages and disadvantages are described. A conclusion is made regarding the effectiveness of the implemented methods of countering the TCP PUSH ACK Flood attack based on the average and maximum values of CPU usage, the percentage of lost packets (Packet Loss), the average and maximum response time, as well as the availability of access to the deployed web page on the victim's server. The final part of the work provides recommendations for improving server software and transport layer protocols, in particular TCP, in order to increase the effectiveness of countering distributed denial-of-service attacks, which are based on the abuse of prohibited flag combinations, IP address spoofing, and sending «Martian packets».
Nilai religiositas novel Suluh Rindu karya Habiburrahman El Shirazy: Kajian sosiologi sastra dan implementasinya sebagai bahan ajar sastra di SMA
Authors: Rettyaningsih Maharani , Widayati Mukti , Nurnaningsih Nurnaningsih
Published: December 2024

This research aims to describe the religious value in the novel Suluh Rindu by Habiburrahman El Shirazy and its implementation as literature learning material in high school. This type of research uses qualitative descriptive methods. The research data is in the form of quotations of words, phrases, clauses, and sentences containing religious value in the novel Suluh Rindu by Habiburrahman El Shirazy. This study's data source is the novel Suluh Rindu by Habiburrahman El Shirazy, designed with literary content analysis. Data collection techniques are reading, listening, taking notes, and documenting, and data validity using data triangulation. Data analysis techniques use dialectical methods. The results of this study show that the novel Suluh Rindu contains three religious values: creed, worship, and morals. The religious value of this novel can be implemented as literature learning material in high school based on reading and viewing elements with learning outcomes in the form of students being able to express ideas and views based on logical thinking principles from reading various types of texts (non-fiction and fiction) in print and electronic media. Students can appreciate fiction and non-fiction texts.
Mountains and women’s struggle in Southeast Asian short stories: a case study of ecofeminism
Authors: Kameo Yosafat Andrew Gabrian
Published: December 2024

This study aims to compare the relationship between mountains and women in two Southeast Asian short stories, namely A.A. Navis's Angin Dari Gunung and Leeyee Lim's The Mountain of Longing originated from Malaysia and Indonesia. Although mountains are mostly viewed as a place where nature thrives and a spiritual place in Southeast Asia, they also can be viewed as a place of belonging and provider, especially for women in dealing with others. Seeing this, ecofeminism is chosen and used as the lens to examine the nature-women relationship that exists in the stories. The qualitative method is added to provide the primary and secondary sources that can help analyze the relationship between the mountains and women. The result of the analysis shows a close relationship between mountains and women. It is presented in a narrative of the chaotic life the female characters deal with, with mountains as the relief provider, comfort, and new life to them. This is considered the way mountains nurture women in their way.
Queratoquiste odontogénico asociado a retención dentaria en región mandibular. Presentación de un caso y revisión de la literatura
Authors: Derat Araujo Jesus Lorenzo , Acosta Peña Jesus Jacobo Eduardo , Basurto Flores Julio César
Published: December 2024

El queratoquiste odontogénico es una entidad patológica benigna con una alta incidencia de recidiva. Se presenta como una estructura redondeada compuesta por una cápsula de tejido fibroso y en el interior una luz que contiene material líquido o semilíquido (queratina), está revestida por epitelio escamoso estratificado delgado con un espesor de 6-10 capas células. La etiología se encuentra en los restos de la lámina dental o con relación al síndrome nevoide de células basales. En estudios de imagenología, se muestra una zona radiolúcida unilocular o multilocular (panal de abejas) de forma ovalada o redondeada, con bordes definidos o festoneados. El plan de tratamiento varia y se divide en dos tipos principales: conservador y no conservador o radical; así como también se cuentan con una variedad de terapias adyuvantes como la crioterapia, la osteotomía periférica la solución de Carnoy, que ayudan a asegurar el éxito del tratamiento y una menor posibilidad de recidiva a corto y largo plazo. Conclusiones: El tratamiento de elección para el queratoquiste odontogénico suele ser conservador, mediante la enucleación quirúrgica y suele ir acompañado de métodos secundarios, como la marsupialización, descompresión y ostectomía periférica. Se presenta un caso clínico de un paciente masculino de 18 años de edad, el cual presenta un queratoquiste odontogénico en el cuerpo mandibular. Se realiza enucleación con ostectomía periférica, lavado del lecho quirúrgico y sutura de los planos profundos y superficiales de mucosas.
Nilai Religius dalam Novel Assalamu’alaikum Baitullah Karya Asma Nadia
Authors: Putri Lutfia , Suntoko Suntoko , Hartati Dian
Published: December 2024

This research is motivated by shifts in increasingly complex religious values. The widespread news regarding the phenomenon of excessive selfies during the Umrah pilgrimage illustrates a shift in religious values. This research aims to describe the religious values ​​contained in the novel Assalamu'alaikum Baitullah by Asma Nadia. The method used is qualitative with descriptive data analysis techniques. This research uses two data collection techniques, namely observation techniques and literature study techniques. Primary data was obtained from the novel Assalamu'alaikum Baitullah by Asma Nadia and secondary data was obtained from various relevant sources. The theory used is the Atmosuwito religious value theory. The results of the research show that there are six aspects of religious values ​​in the novel Assalamu'alaikum Baitullah by Asma Nadia, namely; 1) surrender, submission, and obedience, 2) a life full of glory, 3) inner feelings of connection with God, 4) feelings of sin, 5) feelings of fear, and 6) recognizing the greatness of God. Novels that contain religious values, if studied, can influence someone to apply religious values ​​in everyday life. This research will be recommended as module type printed teaching material for second semester high school students in class XII.
Playing in the Dark? Blackness, Humanity, and Studies of Black Life in Education 2012–2022
Authors: Warren Chezare A. , Coles Justin A. , Jenkins DeMarcus A.
Published: December 2024

The series of high-profile Black deaths in the United States between 2012–2022 (e.g., Trayvon Martin, Michael Brown, Breonna Taylor) mark an important turning point in studies of Black life in education. The increasing use of anti-Blackness theorizing coupled with the introduction of Black critical theory (BlackCrit) to the field of education has inspired new research investigations aiming to understand anti-Black racial harm more precisely. Growing interest in such study leads us to wonder how education researchers envision Black life in their work, and more specifically, the subject of Blackness and its relationship to notions of humanity. As scholars whose research demonstrates a disciplined intellectual commitment to Black humanity, we observe that a uniform scholarly conception of humanity + Blackness remains elusive. In this systematic review of 226 peer-reviewed articles, we seek to better understand (a) how education researchers conceptualize Black humanity in articles published during a period of intense social change and political upheaval in the United States (i.e., 2012–2022); (b) what specific claims they make about Black life as a result; and (c) what long-term implications emerge as a result of this knowledge production. Ultimately, this paper offers insight for sharpening the theoretical and interpretive heft of education research that probes the substance of Black people’s lived education realities, the knowledge from which is desperately needed to imagine, design, and steward education futures that all America’s children need to thrive.
Aspects of influence on the value of coal blend bursting pressure and metallurgical properties of coke. Message 1. For-mation of bursting pressure depending on the properties of coal concentrates
Authors: Miroshnichenko D.V.
Published: December 2024

It is shown that when forming the composition of coal charges for coking, it is necessary to solve not only the problem of producing metallurgical coke with high physical and mechanical characteristics, but also to ensure optimal operating conditions and preservation of the furnace stock, taking into account the bursting pressure of coal raw materials. The article defines the bursting pressure, i.e. the pressure exerted by a coal mass that has passed into a plastic state, provided that it is deprived of the ability to expand freely. The main reason for the development of the burst pressure is the pressure in the plastic layer of vapour-gas products of thermal decomposition of coal, which is transmitted through the semi-coke-coke to the refractory wall of the heating wall of the coking chamber, causing its deflection. Based on the study of the plastic-viscous properties of coal concentrates by the Giseler method, the connection between the peculiarities of the plastic state of coal of different degrees of metamorphism and the bursting pressure (Pb), which it develops during coking, was confirmed. The minimum values of Pn were recorded for coals of grades DG, G, and GZh (Pbav = 2.5 kPa), the maximum values were recorded for coking and low-sintering coals (Pbav from 7.9 to 25.3 kPa). The correlation between the bursting pressure and genetic and technological properties of coal raw materials (volatile matter yield and vitrinite reflectance) was established. The regression equations for predicting the bursting pressure were developed taking into account the vitrinite reflectance, vitrinite and fuseness content, maximum fluidity temperature and volatile matter yield of the charge. The developed equations are characterised by high correlation coefficients r (0.89-0.9), which indicates their statistical significance and the possibility of using them to predict this indicator. The use of the proposed equations makes it possible to predict the bursting pressure using the data on the properties of coal concentrates, which must be determined at a coke plant to control the quality of raw materials. Keywords: bursting pressure, plastic-viscous properties, component composition, petrographic characteristics, volatile yield. Corresponding author D.V. Miroshnichenko, e-mail: dvmir79@gmail.com
Drying of coal blend using waste steam of Dry Coke Cooling Lantp
Authors: Kravchenko S.A.
Published: December 2024

In order to increase the energy efficiency of blast coke and by-product manufacturing processes, a technological scheme was developed for coal blend drying to 5,5 % (on average) moisture content using a steam tube drum dryer (by STD scheme design) using the heat of the spent steam after the turbogenerators of the coke dry cooling plants on the following main initial requirements: coke oven battery capacity makes up 930000 tpy of dry gross coke; coal blend coarseness from 75 to 80 % of 0-3 mm grade; coal blend density – 1400 kg/m3, bulk weight – 700 kg/m3. Considering the need of drying department in coal blend with an average moisture content of 10,5 % (214078 kg/h), it is planned to install two working lines for drying the coal blend (two modules of 107039 kg/h each) and one reserve (one module). To determine the equipment for one work line, there were calculated the material and heat balance. Each process line has the following main units: wet coal blend bin; dosing devices of continuous action, shelland-tube heat exchangers; sluice feeders (4 nos.); unit of condensate tapping; fan; smoke fan; cyclofilters of three purification stages; pipeline fittings, throttle valves (2 nos.). The common units for three process lines are: belt conveyor, belt conveyor with flat belt, two-position valve with screw drive, double-sided drag plough and belt conveyor for dried coal blend. The process diagram provides for implementation of automated control system of technological processes, use of instrumentation and microprocessor equipment. Transformer substation is envisaged for power supply of electric consumers of drying department. The economic efficiency of the coal blend drying process according to the developed scheme has been proven: the payback period, calculated based on the annual economic effect, is under 2,9 years. Keywords: coking, coal blend, drying, energy efficiency, steam tube drum dryer, waste steam, dry coke quenching installation. Corresponding author S.V. Chaplianko, e-mail: chaplianko_sv@ukr.net
Definition of dry coke cooling technolo-gy efficiency
Authors: Kravchenko S.A. , Tsymbal A.О. , Chaplianko S.V. , Sukhorukovа С.V.
Published: December 2024

As a part of the development of scientific and technical documentation for the reconstruction of coke battery facilities at one of the largest coke production enterprises for metallurgy and one of the largest exporters of chemical products in Ukraine, an analysis of the economic efficiency of implementing dry coke cooling technology was performed. The main issues that required resolution through reconstruction were: improving coke quality, increasing coke production efficiency and reducing harmful emissions into the environment. The project includes the implementation of SE "GIPROKOKS'' new technical solutions for improving the technological units of the coke dry cooling plant (CDCP) and dust collection units (with two-stage dry purification), aimed at increasing the CDCP efficiency and reducing enviromental emissions, as well as measures to improve working conditions and safety for the operation personnel. It has been shown that the total capital investment in the CDCP construction (including the turbo generator) is 14,7 times higher than the wet quenching complex construction. It has been established that with dry coke cooling technology, operating costs per ton of coke are 17,5 times higher compared to wet quenching technology. In determining the CDCP economic efficiency, the advantages of dry cooling were taken into account, including: increased revenue from the sale of commercial coke, reduced coke consumption in blast furnace production, utilization of self-produced electrical energy resources, additional low-pressure steam resources from self-production, and additional quantities of commercial coke oven gas. The economic efficiency of implementing dry coke cooling technology has been proven: the non-discount pay-back period is less than the project implementation period by 17 years (the CDCP life cycle is equal to the coke ovens life cycle and is projected to be 20 years), and the calculated level of simple annual internal rate of return on investment is higher by 14,8 % compared to the normative level. Due to effective technical solutions, the obtained technical achievements have been successfully implemented in the development of scientific and technical documentation for one Ukrainian and three international clients. Keywords: capital investment, pay-back period, simple rate of return, coke oven and by-product production, reconstruction, coke oven battery, coke cooling, coke dry cooling plant. Corresponding author S.V. Chaplianko, e-mail: chaplianko_sv@ukr.net
Using of organic additives in the coking process of coal blends
Authors: Grigorov A.B. , Zelenskyi O.I.
Published: December 2024

The article provides an overview of the possibility of using liquid organic materials as fuming and sintering additives in coal blends. A classification of these additives by the type of feedstock is proposed, which includes: prepared hydrocarbon mixtures; commercial products of oil refining and coke production; technologically produced additives obtained exclusively to increase the sinterability of coal blend; various types of waste accumulated in an amount that allows them to be used as relatively cheap sintering additives with simultaneous thermal disposal of hazardous substances. The main requirements for the industrial use of liquid organic additives are formulated, which include low cost; stocks capable of ensuring industrial use; viscosity and structure that ensures convenient transportation and mixing with coal blends; increase in the bulk density of the coal blend during its loading; inertness to the material from which mixing devices and transport devices are made; ability to be evenly distributed over the blend volume; a certain fractional and group chemical composition, which allows participating in the formation of a plastic layer; no negative impact on the quality of chemical coking products; no negative impact on the furnace masonry; non-belonging to Class I or II hazardous substances. It has been established that the introduction of additives in certain concentrations can improve the coke strength and significantly increase the yield of valuable coking chemical products (in particular, benzene). It has been shown that organic liquid additives with high density can be used as a medium for introducing finely dispersed inorganic powders (e.g., B4C, SiC, etc.) into the coal blend, which act as volume-modifying additives to produce high-quality metallurgical coke. Keywords: coking, coal blend, additives, petroleum products, coking chemicals, waste, coke, sintering. Corresponding author A.B. Grigorov, e-mail: grigorovandrey@ukr.net
Associations of Dietary Intakes with Parkinson’s Disease: Findings from a Cross-Sectional Study
Authors: Zeng Zhaohao , Xiong Lijiao , Cen Yanmei , Hong Guo , Shen Yingao , Luo Xiaoguang
Published: December 2024

Background: Parkinson’s disease (PD) is a chronic progressive neurodegenerative disease, and the exact etiology of PD has not been fully elucidated. Changes in dietary patterns play an important role in the onset and progression of PD. However, the association between specific dietary factors and PD remains unclear. Methods: A total of 14,309 subjects from the National Health and Nutrition Examination Survey (NHANES) (2007–2016) were included. Logistic regression was used to analyze the association between 34 nutrients and PD. The regression model was adjusted for potential confounders and effect modifiers including age, gender, race, education, hypertension, and stroke. Results: The data showed negative associations of the intake of protein (0.99 (0.98, 1.00), p = 0.018), fiber (0.96 (0.93, 0.99), p = 0.003), vitamin E (0.91 (0.86, 0.97), p = 0.005), copper (0.55 (0.36, 0.86), p = 0.009) with PD. Alpha carotene (p = 0.042), beta-carotene (p = 0.006), phosphorus (p = 0.018), magnesium (p = 0.002), sodium (p = 0.035), potassium (p = 0.001) had a potential negative correlation with PD. The intake of carbohydrate, sugars, fat, cholesterol, vitamin A, beta-cryptoxanthin, lycopene, lutein zeaxanthin, vitamin B1, vitamin B2, niacin, vitamin B6, folate, vitamin B12, vitamin C, vitamin D, vitamin K, calcium, iron, zinc, selenium, caffeine, theobromine, alcohol was not associated with PD (p > 0.05). Conclusions: Some specific dietary elements are associated with PD, and supplementation of dietary elements may have potentially beneficial effects. However, the observed associations between dietary factors and PD may be influenced by changes in diet resulting from the disease itself, rather than diet influencing PD risk. Further longitudinal studies are needed to establish causal relationships and directionality.
Predictive Value of Microalbuminuria, Systolic Blood Pressure, and Serum Uric Acid Levels for Preeclampsia/Severe Preeclampsia in Gestational Hypertensive Patients
Authors: Nguyen Ha Hong , Nguyen Le Thi , Tran Phuc Hoang , Nguyen Kien Trung , Tran An Viet , Tran Son Kim , Tran Chau Minh , Ngo Toan Hoang
Published: December 2024

Background: Preeclampsia is one of the most prevalent hypertensive disorders during pregnancy, leading to various issues that have an adverse impact on both the mother and the fetus. Study to evaluating several biomarkers to predict preeclampsia/severe preeclampsia in gestational hypertensive patients. Methods: We conducted a cross-sectional analysis study of 126 pregnant women with gestational hypertension. The assessment of microalbuminuria, systolic blood pressure, and serum uric acid levels linked to incidents of preeclampsia/severe preeclampsia (after a 3-month follow-up) was carried out utilizing the receiver operating characteristic (ROC) curve. Results: Among the 126 pregnant women with gestational hypertension studied, 26 patients (20.6%) developed preeclampsia/severe preeclampsia during the 3-month follow-up period. In the logistic regression analysis, variables including systolic blood pressure, creatinine, serum uric acid, and microalbuminuria were identified as independent risk factors predicting preeclampsia/severe preeclampsia in gestational hypertensive patients (p < 0.05). Microalbuminuria, with a cut-off point of 126.25 mg/L, demonstrated a sensitivity of 96.2%, specificity of 96%, and an area under the curve of 0.981. Regarding systolic blood pressure, the cut-off threshold, sensitivity, and specificity were 155 mmHg, 65.4%, and 91%, respectively. Serum uric acid, with a threshold of 352.7 μmol/L, showed a sensitivity of 92.3% and a specificity of 67%, and was found to be a significant predictor of preeclampsia/severe preeclampsia in patients with gestational hypertension (p < 0.001). Conclusions: In gestational hypertensive patients, the assessment of microalbuminuria, serum uric acid, and monitoring of blood pressure indices is recommended to facilitate early prediction of the onset of preeclampsia/severe preeclampsia.