bluuebunny/crossref_metadata_2025 huggingface dataset:
Tourism and Modernization in the Northern Caucasus Republics — New Opportunities for Catch-up Development
Authors: Starodubrovskaya I. V. , Sitkievich D. A.
Published: November 2024

The article analyzes the impact of the tourism boom on catch-up development in the Northern Caucasus and examines how “modernization from above,” which emphasizes the state’s role in improving underdeveloped regions, and “modernization from below,” which sees the role of market-oriented private business as crucial, accommodate the increasing demand for tourism. Both models have responded quite effectively to the new opportunities and challenges presented by the tourism boom. State institutions charged with development have contributed to increased capacity at the ski resorts under their management, which have shown significantly better results than resorts that do not operate under a single company. Private business, however, was able to create a market for excursions and ethno-tours almost from scratch by providing a variety of tourist attractions and adapting services to tourists’ requirements. In order to improve the quality of tourism and counteract opportunistic behavior by contractors, businesses have applied new institutional tools. The two modernization models also exhibit some symbiotic relationships. For example, expanding ski resorts attract private businesses while entrepreneurs often compensate for mistakes made in planning resorts. Nevertheless, the weaknesses of these models when stressed by growing demand are also evident. In one instance, the development institute responsible for Northern Caucasus tourism has not yet found optimal ways to coordinate its activities with the authorities of the districts adjacent to the resorts or with private businesses. The state is also not fully capable of promoting successful development of private business, especially if this requires investment or administrative intervention above the regional level.
Impacto da cirurgia bariátrica no uso de medicamentos e qualidade de vida de obesos
Authors: Rodrigues Andresa de Souza , Florentino Júnior Isaias de Lima , Pedrosa Sybelle Christianne Batista de Lacerda , Pio Isabel Dielle Souza Lima , NUNES DEUZILANE MUNIZ
Published: November 2024

Objetivo: avaliar o impacto da cirurgia bariátrica no uso de medicamentos e na qualidade de vida de indivíduos obesos em Petrolina, Pernambuco. Materiais e Métodos: Trata-se de um estudo analítico, prospectivo e observacional com os dados coletados antes e após o procedimento cirúrgico, e aplicado o Questionário de Qualidade de Vida (WHOQOL-bref). Resultados: Participaram 25 indivíduos e 64,0% apresentavam comorbidades. Após a intervenção, ocorreu redução de comorbidades (p = 0,04) e do número de pessoas que utilizavam ou não medicamentos após a cirurgia (p = 0,031). O WHOQOL-bref mostrou melhoria na qualidade de vida depois da realização da cirurgia bariátrica (p<0,001). Além disso, identificou-se que a quantidade de medicamentos se apresentou como fator interferente da qualidade de vida na obesidade antes (p=0,018) e após o procedimento (p=0,021). Conclusão: Observou-se melhoria da qualidade de vida de indivíduos obesos após a cirurgia e destacou a utilização de medicamentos como um contribuinte impactante.
Combustion of near stoichiometric hydrogen-air mixtures stabilized near tubular porous burner
Authors: Bykov V. , Gubernov V. , Maas U.
Published: November 2024

В данной работе эффект стабилизации пламени в трубчатых горелках исследуется численно. Наблюдаются два основных режима горения – стабилизированное пламя у поверхности, называемое режимом присоединенного пламени, и отошедшее пламя. В случае режима присоединенного пламени деформация потока стабилизирует фронт пламени, существующий в очень широком диапазоне скоростей притока. В случае отрывного режима пламени на фронт пламени влияет совместное влияние деформации, искривления и расходящегося потока. В этом случае сообщается о трех дополнительных подрежимах. Стационарное деформационное пламя наблюдается при относительно низких давлениях и для обедненных смесей. Затем с увеличением скорости натекания стационарный фронт пламени становится неустойчивым и возникают колебания пламени в составе смеси, близком к стехиометрическому, при повышении давления. Эта потеря стабильности чрезвычайно чувствительна к атмосферному давлению, молекулярной диффузии и химической кинетике. Дальнейшее увеличение скорости притока снова стабилизирует пламя до тех пор, пока не будет достигнуто новое критическое напряжение и пламя не погаснет. Очерчен параметрический диапазон этих различных режимов и определены критические скорости притока.
Перспективные пути снижения углеродного следа мировой экономики
Authors: Арутюнов В.С. , Арутюнов А.В.
Published: November 2024

Наблюдаемое изменение глобального климата и предполагаемая связь этого явления с изменением концентрации углеродсодержащих парниковых газов в атмосфере стимулировали усилия, направленные на снижение эмиссии парниковых газов (снижение углеродного следа мировой энергетики и экономики). Для решения этой проблемы последовательно предлагались такие пути, как переход на возобновляемые источники энергии (ВИЭ), масштабное секвестирование промышленных выбросов СО2, замена углеводородных источников энергии на водород. В работе рассмотрены причины низкой эффективности этих проектов. Сделан вывод, что в настоящее время наиболее радикальный и экономически реальный путь снижения эмиссии диоксида углерода в атмосферу – постепенная замена угля и нефти природным газом, причем не только в энергетике, но и в качестве сырья для производства нефтехимических продуктов. В свою очередь, это требует повышения эффективности существующих и создания новых газохимических процессов.
Типы структур тепловой волны фильтрационного горения при газификации твердого горючего
Authors: Салганский Е.А.
Published: November 2024

Предложена двухтемпературная математическая модель стационарного процесса фильтрационного горения, учитывающая конечный размер реактора и зависимость теплоемкостей от температуры и состава фаз. Модель описывает газификацию твердого горючего в фильтрационном режиме. Представлены результаты расчетов для газификации смеси углерода с инертным материалом. Определен интервал значений содержания горючего компонента, в котором не реализуется ни нормальная, ни инверсная тепловая структура волны горения. Показан предел температуры горения во всем интервале доли горючего компонента.
Исследование исходной растительной биомассы для объемного получения графеноподобных структур
Authors: Приходько Н.Г. , Елеуов М.А. , Аскарулы К. , Толынбеков А.Б. , Таурбеков А.Т. , Әбдiсаттар Ә.Ә. , Атаманов М.К.
Published: November 2024

Графен – привлекательный двумерный материал с превосходными механическими, электрическими и тепловыми свойствами. Массовое производство высококачественного графена в последние годы привлекает все больше внимания исследователей. В большинстве современных методах для синтеза графена используются очищенные химические реагенты, которые являются дорогими для крупномасштабного производства. Тем более, что для некоторых приложений такой высококачественный графен, полученный методами CVD, PVD, не требуется. Поиск технологически простого и экологически чистого метода синтеза графена для массового производства крайне необходим. В работе проведено исследование физико-химическими методами морфологических, структурных и термогравиметрических свойств отходов растительной биомассы на предмет получения из них графеноподобных структур комбинированным способом (гидротермальная обработка с физико-химической активацией). В качестве биопрекурсоров предложены и исследованы образцы пшеничной соломы, пшеничные отруби и рисовая шелуха. Полученные данные позволили сделать вывод о перспективности исходной биомассы по применению их в качестве бипрекурсоров для последующего синтеза графеноподобных структур предлагаемым методом.
Anthracnose Disease Attack on Chili Plants in West Sumatra
Authors: Yanty Dini Puspita , Trizelia  , Darnetty  , Trisno Jumsu
Published: November 2024

This study aims to determine Colletotrichum spp's attack level. causing anthracnose disease in chili in West Sumatra. The location of plant samples is determined based on the chili plant production centers in the high and lowlands. Sampling is done by randomized multi-stage sampling. The first stage determines two districts in the highlands, namely Tanah Flat and Agam, and two districts in the lowlands, namely Padang Pariaman and Padang City. The second stage determines two sub-districts in each district, namely X koto and Batipuh districts (Tanah Datar regency), Ampek Angkek and Sungai Pua districts (Agam regency), 2 x 11 Enam Lingkung and Patamuan districts (Padang Pariaman regency) and Pauh and Kuranji districts (Padang city). The third stage determines the Nagari, and each Nagari selects two chili planting fields with the criteria of having a land area of ± 400 m2; on that land, the chili plants have borne fruit. In each field, 40 sample plants were taken systematically randomly. The parameters observed included the infested plants, the infested fruit, and the intensity of the attack. The results showed that the attack of Colletotrichum spp. causing anthracnose disease on chili plants in West Sumatra was relatively high, with the infested plants ranging from 36.32% to 62.85% (average 45.13%), the number of infested fruits 23.50%-48.00% (average 36.39%) and the intensity of attack 37.8%-73.33% (average 52.85%). There was no visible difference in attack between highlands and lowlands.
Ready-to-Drink Functional Drink Formulation of Black Mulberry (Morus Nigra) Fruit Extract with The Addition of Moringa Leaf (Moringa Oleifera) Extract Using D-Optimal Expert Design
Authors: Garnida Yudi , Utami Dhia Putri
Published: November 2024

This final research project aims to obtain an optimal formulation for manufacturing ready-to-drink functional drinks made from black mulberry and moringa leaf extract using the D-Optimal method of the Design Expert application. This research was carried out with the program to produce the desired chemical, physical, and organoleptic properties so that laboratory analysis results and the best formulation were obtained. Responses in this study were chemical analysis, including testing levels of vitamin C and pH, physical responses in terms of color stability, and organoleptic tests on taste, color, and aroma attributes. The results of this final project research found 15 formulations offered to produce an optimal formulation based on the desired value, which showed a value of 0.836, with 43.70% black mulberry, 33.87% moringa leaves, 5% stevia sugar, 1.42% sorbitol, and other additional ingredients as fixed variables, including 0.5% sodium benzoate 1000ppm, 0.2% CMC, 0.3% salt, and 15.00% water. The selected samples were then analyzed for antioxidant activity. Laboratory results for vitamin C were 6.43%, pH of 4.55%, color stability of -0.49, organoleptic properties of taste attribute of 4.36, color attribute of 3.36, and aroma attribute of 4.12. The laboratory analysis results are close to the predictions of the D-Optimal method on the Design Expert program. In addition, antioxidants on day 0 were 1081.41 ppm, and on day 7 were 929.79 ppm.
Development of Self-generated and LPWA-based Crop Growth Environment Monitoring and Bigdata Analysis System
Authors: Oh Yeon-Jae
Published: November 2024

Smart farms are a technology that greatly helps improve the productivity and quality of crops and is being actively introduced into indoor environments such as greenhouses. Various sensors are installed in greenhouses to collect data, which AI analyzes to find the optimal crop growth environment. Various studies have been conducted to control this environment automatically. However, it has not yet been distributed to field-grown crops. The main reason is that, unlike indoor environments, it is tough to collect sensor data to monitor the growth environment of crops in open fields where weather conditions change significantly and the power supply is complex. Additionally, because various sensors are used, the data formats of the devices are different, making it difficult to process. This paper presents a field crop growth environment monitoring and big data analysis system. The proposed system first solves power supply and data communication problems using solar power generation and LPWA technology. Additionally, based on the oneM2M architecture, data from various sensors is transmitted to the server using standardized technology. The transmitted data is stored and managed on the server as big data and can be used to predict the production and quality of field-grown crops and take appropriate measures. The proposed system is expected to create an environment optimized for the growth of field crops and help prevent and manage diseases.
Black Rice Extract Reduces Body Weight, Waist Circumference, Body Mass Index and Lipopolysaccharide in Obese Subjects: A Preliminary Study
Authors: Makmun Armanto , Bukhari Agussalim , Taslim Nurpudji Astuti , Aminuddin Aminuddin , Sandra Ferry
Published: November 2024

BACKGROUND: The prevalence of obesity, or an excessive fat accumulation, is keep increasing. In obesity, inflammation can be induced by leaky gut due to the intestinal tight junction barrier dysfunction. Zonula occludens-1 (ZO-1) plays a role in developing intestinal tight junction barrier dysfunction and gut microbiota imbalance, thus promote the translocation of bacterial endotoxin characterized by lipopolysaccharide (LPS) into circulation. Black rice extract (BRE) has been known to have anti-inflammatory property. This study was conducted to investigate the effect of BRE on body weight (BW), waist circumference (WC), body mass index (BMI), ZO-1 and LPS of obese patients.METHODS: Twenty-three male subjects were divided into non-obese group (NOG), obese group (COG) and BRE-obese group (BOG). Subjects in BOG received a daily dose of 5.6 g/day BRE for 4 weeks. BW, WC and BMI, serum ZO-1 and LPS were measured before and after treatment.RESULTS: BRE was prepared successfully and free from microbial contamination. Treatment of BRE for 4 weeks reduce BW (95.40±5.78 vs. 94.59±6.00 kg, p=0.043), WC (109.25±3.55 vs. 107.50±3.46 cm, p=0.000) BMI (32.65±1.86 vs. 32.18±1.80, p=0.000) and LPS (222.27±38.63 vs. 131.63±9.70 ng/mL, p=0.020) of obese subjects. The pre-post ZO-1 levels in all groups were not significantly different (p>0.05).CONCLUSION: Treatment of 5.6 gr BRE daily for four weeks can reduce BW, WC, BMI and serum LPS, but not serum ZO-1 in obese patients. Therefore, BRE may reduce inflammation in obesity.KEYWORDS: black rice, obesity, BW, WC, BMI, LPS, ZO-1
Stenochlaena palustris Ethanol Extract Decreases Viability and Induces G1-Phase Cell Cycle Arrest in HSC-3 Tongue Cancer Cells via p21 and p27
Authors: Sandra Ferry , Ranggaini Dewi , Halim Johni , Taramalinda Elizabeth Yuliani , Scania Alifah Evi , Roeslan Boedi Oetomo , Lee Kyung Hoon
Published: November 2024

BACKGROUND: Oral squamous cell carcinoma (OSCC) of the tongue is an aggressive cancer with a poor prognosis due to its resistance to standard treatments. Stenochlaena palustris, a medicinal fern containing bioactive compounds, has shown potential anticancer properties. However, there is a lack of studies addressing the effects of S. palustris ethanol extract (SPEE) on tongue cancer. This study examined the effects of SPEE on the cell viability and cell cycle of human squamous cell carcinoma (HSC)-3 tongue cancer cells.METHODS: SPEE was prepared with the maceration method. HSC-3 cells were treated with SPEE at concentrations of 100, 500, and 1000 µg/mL for 24 and 48 hours. Cell viability was measured with 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Cell cycle analysis was performed using flow cytometer. Immunoblotting was used to measure amount of cell cycle regulators, protein 21 (p21) and protein 27 (p27).RESULTS: SPEE treatment led to a significant decrease in HSC-3 viable cells in a concentration- and time-dependent manner, with the most pronounced effect at higher concentration and prolonged treatment time. There was a slightly increase in the percentage of cells in the Sub-G1 phase in SPEE-treated group, meanwhile there was a significant increase in the percentage of cells in the G1-phase. Increased amount of p21 and p27 were observed in SPEE-treated group.CONCLUSION: SPEE significantly inhibited HSC-3 cell proliferation in a concentration- and time-dependent manner, primarily by inducing G1-phase cell cycle arrest through the upregulation of p21 and p27. Taken together, SPEE could be a potential anti-cancer agent for tongue cancer cell. KEYWORDS: Stenochlaena palustris, tongue cancer, cytotoxic, cell cycle arrest, HSC-3 cells, p21, p27
Tumor Differentiation is Correlated with Estrogen Receptor Beta (ERβ) Expression but Not with Interleukin-6 (IL-6) Expression in Colorectal Carcinoma
Authors: Theodora Imelda , Sudiana I Ketut , Budipramana Vicky Sumarki , Erwin Ferdinand , Dewi Sianty , Novita Bernadette Dian
Published: November 2024

BACKGROUND: Colorectal carcinoma (CRC), the third most common malignant disease worldwide, is associated with estrogen receptor β (ERβ) and interleukin-6 (IL-6). ERβ is known to down-regulate IL-6 in prostate cancer, lung carcinoma, and CRC cell lines; however, its effect on human with CRC remains unclear. Therefore, this study was conducted to investigate the association between ERβ and IL-6 expressions with the clinicopathological features of CRC.METHODS: This was an analytic observational study using 40 paraffin blocks of CRC patients. ERβ and IL-6 expression was measured by immunohistochemistry (IHC) staining. The percentage of immunoreactive tumor cell per 1000 cells was manually recorded and tumor differentiation as well as tumor infiltration were determined. Tumor differentiation was graded according to the World Health Organization (WHO) 2010 criteria, while tumor infiltration was defined based on the American Joint Committee on Cancer (AJCC) 8th edition.RESULTS: Fifty percent of samples were well-differentiated CRC, and 57.5% samples were T3 infiltration tumors. IHC staining showed 35.5% of samples were positive for ERβ expression, while 70.86% were positive for IL-6 expression. There were negative correlation of ERβ expression with tumor differentiation (p=0.018; r=-0.371), but no correlation with tumor infiltration (p=0.836) were found. There was no correlation between ERβ expression with IL-6 expression (p=0.154).CONCLUSION: There is statistically significant correlation between tumor differentiation and ERβ expression, wherein improved tumor differentiation is linked to higher levels of positive ERβ expression. However, there is no discernible relationship between IL-6 and tumor differentiation. These findings suggest that while IL-6 was involved in the growth of the tumor, ERβ expression might have an impact on tumor differentiation.KEYWORDS: colorectal carcinoma, estrogen receptor beta, interleukin-6, cell differentiation
El análisis del discurso y los valores en los cuentos literarios: escenarios para la formación de una cultura para la paz en estudiantes de sexto grado
Authors: Padilla Escorcia Iván , Yepes Ospino Claudia , Daza Morales Nathaly
Published: November 2024

La escuela está llamada a ser un factor determinante en la autogestión de políticas educativas dirigidas a la formación del nuevo ciudadano que se requiere, y donde el docente no debe teorizar sobre los valores, sino llevarlos al terreno de lo cotidiano, en el cual los estudiantes puedan descubrirlos. El estudio que se presenta tuvo como propósito formar estudiantes de sexto grado en una cultura para la paz a partir del análisis del discurso y de los valores presentes en cuentos literarios. En el desarrollo del marco teórico se tuvo en cuenta los planteamientos de autores como Fairclough (1989, 1992, 1995); Solé (1992, 1998); Calsimiglia y Tusón, (2002); Bravo y Herrera (2011); Galán (2012); Pérez, Pérez y Sánchez (2013); Moreno (2016); Castro (2017), junto a otros. La investigación se enmarca en el paradigma sociocrítico, con un enfoque cualitativo, para la búsqueda de respuestas a partir de la observación, diario de campo y entrevistas semiestructuradas a 13 estudiantes y un docente de una institución educativa de carácter privado, ubicada en el municipio de Puerto Colombia, con cercanía a Salgar, en el Departamento del Atlántico. A partir de los resultados obtenidos, se diseñó la propuesta pedagógica titulada “Vivamos una Cultura para la Paz desde el Discurso y los Valores Presentes en los Cuentos Literarios”, con la que se buscó mostrar los beneficios que tiene utilizar el discurso y los valores presentes en los cuentos literarios. Al finalizar su implementación, los estudiantes lograron comprender cómo a través del discurso se establece el nexo entre los miembros sociales de un grupo y las implicaciones que este tiene en las interacciones sociales.
The stem and progenitor cells and the functional activity of liver from age-different Wistar rats
Authors: Pershina O. V. , Uzyanbaev I. A. , Pakhomova A. V. , Pan E. S. , Kogay L. V. , Ermakova N. N. , Sandrikina L. A. , Kurbatov B. K. , Krupin V. A.
Published: November 2024

The liver has a big potential for self-healing, but the activity of regeneration decreases with age. Changes are occurring, including in the functional activity of various liver cell populations, the study of the characteristics of which can become the basis for the development of new therapeutic approaches to the liver diseases treatment at older people. The aim of this research was to study the level of stem and progenitor cells and the functional activity of the healthy liver from age- different rats. Material and methods. Experiments were carried out on Wistar rats aged 6 and 12 months. Ultrasound and histological examination of the liver from rats was used to assess morphological changes. The lipid profile of blood serum was evaluated by biochemical methods. Cytometric methods were used to study the surface and intracellular antigens of stem and progenitor cells isolated from the bone marrow, arterial blood and liver of rats. Results and discussion. In 12-month-old male Wistar rats, compared with 6-month-old rats, excessive formation of extracellular matrix components, disruption of tissue architecture, development of portal hypertension, as well as an increase in the concentration of cholesterol, triglycerides, high- and low-density lipoproteins were revealed. We identified age- related differences in the content of hematopoietic and mesenchymal stem cells, epithelial cells (CD45–CD326+) in the bone marrow, blood and liver of rats. In the liver parenchyma, the populations of hepatocyte precursors (CD45– CD326+CD133+), oval cells (CD45–CD326+CD133+CD90+). At the same time, the level of all cell populations in the liver parenchyma of rats expressing the intracellular marker Sox9 was higher in one-year-old animals compared to younger ones, regardless of the cell phenotype. Conclusions. In the liver of 12-month-old rats, compared to 6-month-old rats, the number of cells expressing Sox9, lymphocytes with an inflammatory phenotype increases, the number of stem cells and various populations of epithelial and endothelial cells decreases, which leads to a decrease in the regenerative capacity of the liver, disruption of the tissue architecture of the organ and changes in lipid metabolism. These changes largely determine the increased susceptibility with age to the development of chronic liver diseases.
Monocyte extracellular traps: features of generation in rheumatoid arthritis depending on the stage of autoimmune inflammation
Authors: Bedina S. A. , Mozgovaya E. E. , Trofimenko A. S. , Spitsina S. S. , Mamus M. A. , Zborovskaya I. A. , Akhverdyan Yu. R. , Krayushkina N. G.
Published: November 2024

Recent investigations have demonstrated the involvement of neutrophils and neutrophil extracellular traps (NETs) in the initiation and progression of autoimmune inflammation in rheumatoid arthritis (RA) patients. Simultaneously, macrophages/monocytes, which are the main antigen-presenting cells, play a key role in the immune response as a result of disruption of antigen processing and presentation. Studying the role of monocytes and monocyte extracellular traps (METs) in RA pathogenesis is promising and is of particular interest. The aim of the research was to study the features of the main parameters of monocyte extracellular generation traps in RA patients depending on the stage of autoimmune inflammation. Material and methods. 37 RA patients and 30 healthy individuals were enrolled in study. Circulating monocytes were purified with centrifugation procedure using iohexol with a 1068 kg/m3 density gradient. Cells were identified histochemically, and the extent of monocyte activation was assessed using common nitroblue tetrazolium test. The generation of METs was stimulated by phorbol-12-myristate-13-acetate (PMA), and visualized using fluorescence microscopy with SYBR green. Results and discussion. In patients with inactive RA, the number of monocytes in a state of generating both spontaneous and PMA-induced METs is higher compared to the reference group. The transformation of autoimmune inflammation from remission to the active phase was accompanied by a further increase in the proportion of monocytes that form METs spontaneously and in the presence of PMA (by 114.7 % and 44.2 %, respectively, relative to the comparison group). The growth rate of spontaneous METs formation is 2.6 times higher than induced METs; RA activation is evidenced by an increase in the number of monocytes in the process of spontaneous formation of METs by more than 17.8 %. Conclusions. The obtained data suggest METs participation in the initiation and maintenance of RA autoimmune inflammation along with NETs presumably through exhibition their citrulline neoepitopes. METs could probably be considered as a new potential diagnostic biomarker.
On the setting up of numerical modeling of heart valve prostheses
Authors: Klyshnikov K. Yu. , Onishchenko P. S. , Glushkova T. V. , Akentyeva T. N. , Kostyunin A. E. , Rezvova M. A. , Ovcharenko E. A.
Published: November 2024

The aim of the study was to compare scenarios of numerical modeling of the operation of a heart valve bioprosthesis, identifying their advantages and limitations. Material and methods. Numerical modeling was conducted in the Abaqus/ CAE (Dassault Systèmes, France) engineering analysis environment, simulating two cycles of the valve apparatus’s operation. In total, three different computer models were studied, each providing different levels of detail and complexity of the “UniLine” bioprosthesis. Model No.1 was the most simplified and considered only the geometry of the flap; Model No. 2 incorporated elastic connectors with variable stiffness; Model No. 3 included a composite support frame. Qualitative validation of the modeling results was conducted by comparing with the bench tests data obtained on the hydrodynamic stand (ViVitro Labs, Canada) during tests of the corresponding clinical model of the “UniLine” bioprosthesis. Results. One of the setups, Model No. 2, displayed an artificial stress concentration according to Von Mises in the connector attachment area, reaching 2.695 MPa, which is close to the material’s strength limit. Other setups showed a more moderate stress distribution – up to 0.803 and 0.529 MPa. Moreover, it was demonstrated that only Model No. 2 and Model No. 3 reproduce the key effect of the bioprosthesis operation, the mobility of the commissural posts, ensuring a qualitative match with the work in bench conditions. Conclusions. A methodology is proposed that may be useful for conducting further in silico studies of heart valve bioprostheses. Boundary conditions, methods for linking prosthetic components, and opportunities for large-scale “exploratory” studies based on using simplified models are described. The study results confirm the necessity of including all prosthesis components in the numerical model for a more comprehensive and realistic representation of its biomechanics. Such detail contributes to a more accurate safety and effectiveness assessment of the device and can also serve as a foundation for its further optimization.
As regras monásticas ocidentais (séculos IV-VII): características tipológicas, temas recorrentes e contextos de produção
Authors: Borgongino Bruno Uchoa
Published: November 2024

O monaquismo cristão emergiu nos desertos orientais, tendo se dispersado ao longo do Mediterrâneo e nas ilhas britânicas e irlandesas. As regras monásticas foram documentos escritos pela elite clerical para estabelecer os valores e normas a serem observadas pelas comunidades. Esse artigo tem como objetivo apresentar uma caracterização desse tipo de documento.
Em defesa do ensino da História Antiga nas escolas contemporâneas: Base Nacional Curricular Comum, usos do passado e pedagogia decolonial
Authors: Moerbeck Guilherme Gomes
Published: November 2024

O presente artigo pretende retomar um dos debates político-acadêmicos mais complexos dos últimos anos, aquele que concerne à BNCC e a disciplina de História Antiga ensinada nas escolas. Se por um lado, as discussões e polêmicas acabaram por sublinhar mais claramente as divisões internas do campo de História e seus diferentes projetos, por outro lado, os docentes da área de História Antiga aprofundaram os estudos relativos ao ensino da Antiguidade, em particular, após o ano de 2015 A partir desse impulso, à medida que surgiam novas possibilidades de diálogo com as tendências pós-coloniais da educação, outras, como os estudos da recepção, dos usos do passado, bem como a pesquisa em torno do pensamento histórico se fortaleciam no domínio mencionado. Ao termo, este artigo é tanto síntese quanto proposição de uma História Antiga para as escolas, de uma Antiguidade inextrincavelmente vinculada às preocupações do mundo contemporâneo.
O mundo no medievo: experimentos em ensino história medieval no Brasil
Authors: Dabat Christine
Published: November 2024

Em que medida o ensino sobre a Idade Média pode abrir horizontes de interpretação não eurocêntrica da história para jovens brasileiros. Nas páginas a seguir, serão evocadas algumas tentativas de descentralização do olhar em relação aos roteiros predominantes na historiografia em português. Neste sentido, balizas podem ser colocadas a partir de questionamentos sobre o evolucionismo cultural, por meio de instrumentos simples e acessíveis como mapas e documentos medievais que facilitam o relativizar de assunções corriqueiras. Por sua vez, tais perspectivas permitem reconsiderar também a história de outros períodos e espaços de forma a ganhar em liberdade em relação ao eurocentrismo vigente até na academia, portador de subalternidade intrínseca para quaisquer outros espaços, inclusive o Brasil. A Ásia, por exemplo, oferece materiais ricos e úteis para jovens cidadãs e cidadãos do século XXI.
AS PRESENÇAS DAS BESTAS DO BESTIÁRIO DE BRUNETO LATINI NA DIVINA COMÉDIA DE DANTE ALIGHIERI
Authors: Lula Costa Daniel
Published: November 2024

Neste artigo nos propomos verificar uma possível relação entre o Li livres du tresor, escrito por Bruneto Latini no século XIII, mais precisamente o Volume I que é composto por um Bestiário, e a Divina Comédia, de Dante Alighieri. Investigaremos indícios de presenças de passado, conceito usado por Gumbrecht, entre Latini e Dante, principalmente, nas ideias de selva e de besta, com maior atenção a esta última. Nesse sentido, buscamos os elementos bestiais na obra de Bruneto que foram presentificados por Dante ao inseri-los na selva escura, no início de seu poema. Em um primeiro momento, apresentaremos as duas fontes e seus respectivos autores e, em um segundo momento, analisaremos três bestas descritas por Dante no Canto I do Inferno a pantera, o leão e a loba, e as relacionaremos com a descrição do Bestiário de Latini.
DISSIDÊNCIAS SEXUAIS E DE GÊNERO NO MEDIEVO IBÉRICO: UM ESTUDO SOBRE A SODOMIA NO DISCURSO JURÍDICO DE ALFONSO X (1252-1284)
Authors: Celestino de Jesus Cassiano
Published: November 2024

Na Idade Média, vários são os corpos que não importam. Diversos são os sujeitos classificados como abjetos, a quem se nega até mesmo o direito de viver. Neste período, é totalmente proibido e punido todas as práticas sexuais consideradas ilícitas e pecaminosas. A sodomia, como um desvio de gênero e classificada como um pecado “contra naturam”, insere-se dentro deste quadro de gênero e sexualidades desviadas. Além de ser uma conduta condenada conforme a época, o conceito de sodomia adquiriu diversas definições em diferentes contextos históricos e culturais. Neste sentido, esta dissertação objetiva-se analisar os discursos jurídicos sobre a sodomia durante o reinado de Alfonso X (1252-1284), a partir da perspectiva de gênero e da análise do discurso. O estudo gira em torno de duas obras de caráter jurídico do período, isto é, Fuero Real e Las Siete Partidas. Como um estilo de masculinidade desviante, a sodomia é efeito do discurso monárquico que, articulado com os da Igreja, (re)criam e mantem as classificações e hierarquizações de gênero de acordo com aquilo que é tido como “natural”.
ANTÔNIO VIEIRA: SALVAÇÃO DOS ÍNDIOS NA CARTA AO REI D. JOÃO IV, DE 4 DE ABRIL DE 1654
Authors: Barboza de Morais Oliveira Maria Izabel
Published: November 2024

Pretendemos compreender as ações de Antônio Vieira em prol da salvação da alma dos indígenas do Estado do Maranhão. Para isso, utilizaremos como fonte a Carta ao rei D. João IV, de 4 de abril de 1654. Nesta carta, Antônio Vieira lutava para que o caminho à evangelização dos nativos estivesse livre aos missionários jesuítas, já que se preocupava com a salvação da alma deles. Em sua concepção, a evangelização e salvação dos índios somente seria possível se a sua administração estivesse nas mãos dos jesuítas.
UMA VEZ, UM REI CAVALEIRO: A IMAGEM LENDÁRIA DE RICARDO I, PENSADA A PARTIR DA CULTURA VISUAL INSULAR (XIII – XIV)
Authors: Albuquerque Mauricio
Published: November 2024

Este artigo tem por objetivo analisar algumas representações visuais de Ricardo I. Visamos compreender dois aspectos fundamentais: 1) que memórias culturais são produzidas e/ou ativadas por meio destes artefatos; e 2) como as mesmas imagens se inserem em um contexto mais amplo, na produção de narrativas e imagens lendárias que coadunavam com o projeto ideológico angevino, entre meios do século XIII e XIV. À luz das teorias do imaginário e da memória cultural e amparados metodologicamente pela iconologia crítica o estudo tenta lançar um olhar mais integrativo sobre essas produções, demonstrando que a imagem de Coração de Leão como rei-campeão das cruzadas (Rex Crucesignatus) estava conectada a outros temas culturais importantes do imaginário medieval inglês. Elementos que, por sua vez, contribuíram para construir uma imagem lendária, e, posteriormente, impulsionar a memória heroica do personagem
ENTA GEWEORC, O TRABALHO DOS GIGANTES: J. R. R. TOLKIEN E AS RUÍNAS PRÉ-MEDIEVAIS DA INGLATERRA ALTO-MEDIEVAL
Authors: Las Casas Brito Filho Gesner
Published: November 2024

O objetivo deste trabalho é analisar de que forma as ruínas da antiguidade, elementos presentes na Idade Média, foram interpretadas e agenciadas por Tolkien em sua escrita de fantasia e seus trabalhos como acadêmico.  Portanto, como Tolkien leu estes elementos. A ruína também trata da ideia de civilização em decadência, fim dos tempos e milenarismo, presentes também na arte e escrita medievais, com foco na Alta Idade Média. Cotejaremos estes dois temas buscando demonstrar como estes foram utilizados tanto pelo Tolkien escritor de fantasia quanto pelo Tolkien acadêmico. Dentro da área de estudos medievais, um campo que vem sendo estudado com estudos cada vezes mais numerosos no Brasil, é a apropriação da Idade Média por obras de fantasia contemporâneas. Este artigo além destas preocupações contempla uma preocupação sobre a popularização da Idade Média de fantasia como instrumento de aprendizado sobre a Idade Média fora do ambiente acadêmico.
RESENHA DE: “CRÔNICAS DE SÃO FRANCISCO: I FIORETTI” POR ALEX SILVA COSTA
Authors: Costa Alex
Published: November 2024

Ao ser presenteado pela Doutoranda Elisângela Coelho Morais (PPGHIS-UFMA) com a recente tradução lançada em 2021 de I Fioretti di San Francesco realizada por Veríssimo Anagnostopoulos e lançada pela editora Minha Biblioteca Católica. Na versão optou-se pelo título Crônicas de São Francisco, o que traz diferenças em relação a uma tradução mais aproximada que seria Florezinhas/ Florinhas de São Francisco. A atribuição “Crônicas” nem por isso deixa de ter sentido, ao contrário, confere condição semântica ao gênero textual por justamente apresentar textos curtos que apresentam episódios vividos de maneira exuberante e mística por Francisco de Assis e seus companheiros e discípulos destes. Por isso, apressei-me a desfrutar da novidade do material por ser uma fonte de pesquisa que há tempos trabalho para a construção da tese, “Nos qui cum eo fuimus”: representação e memória do milagre dos estigmas de Francisco de Assis nas hagiografias franciscanas “não oficiais” (séculos XIII e XIV), junto ao PPGHIS-UFMA e sob a orientação do Prof. Dr. Marcus Baccega (UFMA).
FÉ, VIRTUDES E EMOÇÕES NAS BASES DA MORAL QUATROCENTISTA
Authors: Silveira Lemos França Susani , Mota Xavier de Lima Douglas
Published: November 2024

O presente artigo parte da reflexão sobre o papel das virtudes e das emoções em uma sociedade em que a religião é da esfera pública, confere sentido à existência e oferece a maior parte dos motores das ações. Apesar de entrar por esse terreno de valores que são partilhados em vários territórios, o estudo procura circunscrever a análise ao Portugal avisino em busca, senão de singularidades, ao menos de formulações e combinações que sejam características deste território, no qual emerge uma nova dinastia e seus governantes assumem a missão de sintetizar por escrito valores morais a serem difundidos no seu reino. A partir da análise desses escritos, são tratados temas como a finalidade da existência, a relação entre esta finalidade, as condutas virtuosas e a felicidade terrena como caminho da felicidade eterna e, por fim, a relação entre as emoções e a percepção dos valores.
COMO PRATICAR A HISTÓRIA DAS EMOÇÕES
Authors: Roswnwein Barbara
Published: November 2024

A história das emoções (que começou nos anos 1940, podemos dizer) se tornou um campo de estudos sério apenas no final dos anos 1990 e início dos anos 2000. O campo depende de uma nova visão a respeito das emoções; visão essa que nega sua universalidade. Todos os seres humanos possuem o potencial para sentir, mas as emoções específicas (que são reconhecidas, valorizadas e desvalorizadas), bem como os modos pelas quais elas são expressadas, dependem de normas culturais que mudam ao longo do tempo. Atualmente existe uma abundância de metodologias que os historiadores empregam para pesquisa a história das emoções. Esse artigo busca esclarecê-las e sugerir caminhos específicos pelos quais elas podem se adequar a diferentes tipos de questões históricas.
A INCONTORNÁVEL INTENCIONALIDADE DOS AFETOS: A HISTÓRIA DAS EMOÇÕES E AS NEUROCIÊNCIAS ATUAIS
Authors: Reddy William
Published: November 2024

O “problema das emoções”, isto é, o fato de que muitas delas sejam, ao mesmo tempo, cheias de significados e corporais ainda precisa ser resolvido. Pensadores ocidentais, de Agostinho a Zajonc, passando Descartes lidaram com esse problema empregando diversas formas de dualismos mente-corpo. Desde os anos 1970, alguns psicólogos e neurocientistas o têm evitado ao falar em “processamento” cognitivo e emocional, usando uma terminologia emprestada da ciência da computação que anula o caráter intencional ou de significados tanto do pensamento quanto da emoção. Fora dos contextos influenciados pelo Ocidente, emoções e pensamentos não são vistos como coisas de tipos diferentes. Aqui, uma solução, em certa medida, é proposta ao se pensar a expressão emocional como uma atividade dinâmica que, ao mesmo tempo, declara e movimenta as emoções. Como tal, esse dinamismo pode auxiliar historiadores a compreender as mudanças dramáticas e as tendências que eles investigam.
TRISTES TÓPICOS: ESBOÇOS PARA UMA HISTÓRIA DO ENTRISTECIMENTO MEDIEVAL
Authors: Castanho Gabriel
Published: November 2024

Centrado no estudo do entristecimento medieval, o presente artigo visa à compreensão histórica da articulação entre emoção e sociedade. Para tanto, são apresentados conceitos e metodologias oriundos dos estudos históricos das emoções, bem como se realiza análise tópica e semântica de vastas bases de dados congregando importantes coleções de textos medievais redigidos por membros do clero. Tal abordagem, situada entre história das emoções, das práticas escritas, das relações sociais e as humanidades digitais, permite conhecer e delimitar a formação e a afirmação de um regime emotivo salvífico, bem como de comunidades emocionais centradas em comunidades eclesiais. Ao final do percurso analítico é possível esboçar o estabelecimento histórico de uma relação entre entristecimento e ordem social: o entristecimento era, para muitos clérigos medievais, um sinal da retidão espiritual que deveria conduzir certas ações mundanas da comunidade de fé; comunidade essa que deveria, por sua vez, permanecer sensível às injustiças cometidas contra seus membros ou suas coletividades. Desse modo, estabeleceu-se uma forma de eclesiologia emotiva pautada pelo entristecimento.
SAD TOPICS: AN OUTLINE FOR THE HISTORY OF MEDIEVAL SADNESS
Authors: Castanho Gabriel
Published: November 2024

Centered on the study of medieval saddening, the present article focuses on the understanding of the historical relation between emotion and society. To achieve this goal, I present concepts and methodologies from the field of history of emotions, while making an analysis of rhetorical topics and semantics of medieval texts written by members of the clergy and made available today through vast digital databases. This approach – positioned at the crossroads of the fields of history of emotions, writing practices, social studies, and digital humanities – allows us to set the boundaries of the formation and affirmation of a salvific emotive regime and of the emotional communities inside ecclesiastical communities. At the closing of this analysis, I will be able to sketch the historical establishment of a relation between sadness and social order. To many medieval members of the clergy, being sad was a sign of spiritual rectitude which should guide certain mundane actions of the community of faith. This community should, then, remain aware of the injustices committed against its members, either individually or collectively. This, in conclusion, brings to light a form of ecclesiology based on becoming sad.
REPRESENTAÇÃO DAS EMOÇÕES NO ENSINO DAS VIRTUDES E VÍCIOS: A AGENCIA DAS IMAGENS NO SÉCULO QUINZE NA FRANÇA
Authors: Nissim Dafna
Published: November 2024

Este artigo oferece uma nova abordagem para a discussão do aprendizado de emoções, comportamento e virtudes no contexto da educação aristocrático tardo-medieval. É examinada a representação das emoções no ensino das virtudes e vícios na França do século XV a partir de uma análise das ilustrações de vícios no Livro de Horas Morgan e discute-se como gestos e movimentos representados nessas ilustrações comunicam emoções e contribuem à educação moral. O artigo também explora o discurso sobre gestos, emoções e virtudes em tratados didáticos e enfatiza a importância da representação visual na educação moral na Idade Média tardia. Este estudo de caso pode contribuir a novos métodos para o estudo da socialização de indivíduos nas sociedades do passado em que obras de arte tinham um papel fundamental.
Bifurcation Analysis of a Discrete Logistic System with Additive Allee Effect and Feedback Control
Authors: Hadinata Nadia Agus , Suryanto Agus , Kusumawinahyu Wuryansari Muharini
Published: November 2024

A discrete logistic system with addition Allee effect and feedback control is analyzed in this paper. The results of the analysis show that the model has a trivial fixed point and interior fixed point. The results of our stability analysis show that there are topological differences that depend on the step size. Bifurcation analysis is performed by using the center manifold theory and the bifurcation theorem. By taking the step size as a bifurcation parameter, we show that the model may go through a period-doubling and Neimark-Sacker bifurcations. Some numerical simulations are performed to confirm the result of the analysis.
Jensen m-Convexity on Set-Valued Function
Authors: Pramana Eko Dedi , Wibowo Ratno Bagus Edy , Muslikh Mohamad
Published: November 2024

This paper discusses the class of Jensen m-convex functions and their properties, leading to enhancements of these functions and Jensen's inequalities for set-valued functions. It provides several characterizations and explores various algebraic properties. Additionally, it introduces a discrete Jensen-type inclusion.
Reversible Self-Dual Codes over Finite Field
Authors: Hidayat Ardi Nur , Krisnawati Vira Hari , Alghofari Abdul Rouf
Published: November 2024

Reversible self-dual code is a linear code which combine the properties from self-dual code and reversible code. Previous research shows that reversible self-dual codes have only been developed over field of order 2 and order 4. In this article, we construct reversible self-dual code over any finite field of order F_q ,  with natural number q=2.  We first examine and prove some of fundamental properties of reversible self-dual code over . After a thorough analysis these, we obtain a new generator matrix of reversible self-dual code.  A new generator matrix is derived from existing self-dual and reversible self-dual code over . It will be shown that a new reversible self-dual over  can be constructs from one and more existing code by specific algebraic methods. Furthermore, using this construction, we determine the minimum distance of reversible self-dual code and ensuring its optimal performance in various applications.
A Generalized Benders Decomposition for Mixed-Integer Nonlinear Programming: Theory and Applications
Authors: Haq Fadiah Hasna Nadiatul , Chaerani Diah , Triska Anita
Published: November 2024

This paper comprehensively explains how to solve mixed-integer nonlinear programming (MINLP) models using the generalized benders decomposition (GBD) method. The MINLP problem is an optimization model in which some variables must be integers and the objective function or constraints are nonlinear.  The GBD method is an extension of the Benders Decomposition (BD) method, effectively handles the characteristics of the MINLP  model, where the model has nonlinear properties and involves two types of variables, namely continuous variables and integer variables. The GBD method decomposes the problem into primal and master problems that are solved alternately until the optimal solution is found. The main difference between the GBD and BD methods is that GBD uses nonlinear duality in the main problem so that GBD can solve the nonlinear problem, whereas BD applies linear duality. This paper also presents some theorem proofs related to GBD that were not presented in detail in the previous literature. The application of the GBD method is also presented to demonstrate how the method can be effectively used to solve real-world MINLP problems.