bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on the Use of Coal Bottom Ash as a Raw Material Replacement for the Production of Clay Bricks
Authors: Benítez-Vivas José Fernando , Gutiérrez-López Juan Pablo , Torres-Agredo Janneth , Mosquera-Idrobo Luisa Fernanda , Díaz-Huertas Miguel Fernando
Published: December 2023

Context: Masonry bricks are one of the most widely used building materials in the world, which leads to the overexploitation of its raw materials. Its production consumes a large amount of energy and has a large environmental footprint. The clay brick industry can add residues to its raw materials; among those reported are tea processing waste, brick waste, paper industry residues, waste from coffee mills, and coal ashes.
Method: Bottom coal ashes were characterized by X-ray fluorescence, X-ray diffraction, thermogravimetric analysis, electronic microscopy, and particle size analysis. In addition, their density and loss on ignition were determined. The incorporation of ashes in the elaboration of clay bricks was evaluated, with sand replacement percentages of 0, 3, 5, and 7%. Finally, the physical and mechanical properties of the bricks were evaluated.
Results: The water absorption and apparent porosity increased, while the compressive strength and bulk density decreased with the incorporation of ash in the brick samples, except for those with a 3% replacement, which showed a better performance in the evaluated properties.
Conclusions: Coal bottom ashes have great potential in the manufacturing of clay bricks. The findings of this study indicate that, by incorporating up to 3% ashes, bricks can be obtained which comply with the Colombian regulations.
Preliminary Approach for UAV-Based Multi-Sensor Platforms for Reconnaissance and Surveillance applications
Authors: Amézquita-Gómez Nicolás , González-Bautista Sergio Ramiro , Teran Marco , Salazar Camilo , Corredor John , Corzo Germán Darío
Published: December 2023

Context: Unmanned Aerial Vehicles (UAVs) equipped with remote sensing platforms have become increasingly popular due to their applications in aerial surveillance, environmental control, and disaster response. However, the limited flight range and on-board energy resources of UAVs pose significant challenges to their practical deployment and operating efficiency, which has led to the exploration of energy-efficient platforms for remote sensing.
Method: This paper proposes a preliminary approach for UAV multi-sensor reconnaissance and surveillance platforms (MRSS) that target low energy consumption. The approach implemented four sensor modules controlled by one multi-functional integrated edge computer for control and data collection, which can be interchanged according to battery lifetime requirements.
Results: The main contribution of this work was an analysis of the energy consumption behavior of sensor modules managed by an embedded system with edge computing capabilities as the central control unit.
Conclusions: The high energy consumption associated with modules such as GEOINT leads to deep discharge in excess of 20 % DOD, resulting in a maximum battery degradation of 2,4 years.
INDONESIAN MILLENNIALS AND MULTIFORMITY OF UNDERSTANDING OF SUSTAINABLE FASHION NARRATIVE
Authors: Manalu Rouli , Zahra Nurinda
Published: December 2023

This paper examines the ways in which Indonesian millennials build awareness and engage in the global issues of sustainable fashion, which become one of the emerging environment-related issues among Indonesia's younger generations. Some groups of Indonesians millennials take up this issue and begin to campaign for more environmentally-friendly approaches in using fashion, through many different platforms, such as social media, online activities, and offline events. With the increasing popularity of the narrative and the movement, this research is interesting to know the ways in which the young generation of Indonesia understood the narrative and implemented the movement in their own context. This research is particularly interested to see three communities that actively championing this idea in Indonesia; Setali Indonesia, Kekno Klambimu, #TukarBaju movement. In this research, both organizers and participants (followers) of the movements are interviewed to see their understanding, their positions, their motives, and their actions/activisms in engaging in the issues. The result reveals although research participants (or individuals) engaged in this movement and think they were conducting activism under the umbrella of sustainable fashion, their understanding, their application, and their perception about sustainable fashion in relation to broader environmental problems are quite diverse and different from one another. This heterogeneity of understanding and actions generate multiplicity of level of engagement and divergent commitment to the issues. Hence, this paper argues that one particular global issue is possible to be translated to many different forms of actions, as evident among Indonesian millennials' engagement in sustainable fashion.
Revelando la diversidad de la investigación en los campos creativos a través de la Revista de Arquitectura (Bogotá)
Authors: Suescún-Monroy Pilar , Cereghino-Fedrigo Anna Maria
Published: December 2023

Se tiene como propósito indagar por el lugar de la investigación en los proyectos de diseño, desde la identificación de matices que permitan singularizar las formas investigativas que surgen en el marco de dichos procesos. Para esto se realizó una revisión de los artículos incluidos en los números publicados entre el 2018 y el 2023 de la Revista de Arquitectura (Bogotá), que corresponden a los últimos diez números de la publicación, con el objetivo de determinar qué tipos de investigación se incluyeron en cada uno. Tras un análisis inicial acerca de lo que es investigar en arquitectura, los artículos recolectados se agruparon en cuatro categorías: investigación reflexiva, estudios de caso, desarrollos experimentales e investigación proyectual. Además, se señaló a la Revista de Arquitectura (Bogotá) como una fuente de información importante para docentes e investigadores interesados en el campo.
Sankcje w postaci kar pieniężnych
Authors: Wierzbowski Marek , Żywicka Agnieszka
Published: December 2023

Over the several decades of her scientific activity, Professor Teresa Rabska played an outstanding role in the formation of Polish administrative law, particularly during the political and economic transformations of the late 1980s, when Prof. Rabska was actively involved in the field. Within public economic law, the role of the state and its tools for influencing the economy have evolved fundamentally. In this area, the administrative sanctions with which administrative bodies were equipped have developed profoundly and taken on an important function. Undoubtedly, the European Union plays a significant role in the development of administrative penalties. Penalties are imposed in the form of administrative decisions, issued according to procedures governed by the Code of Administrative Procedure. This Code and other laws enumerate the prerequisites for assessing a penalty. Among these, the omission of the element of guilt must be a cause for concern. Consequently, particularly in the case of penalties imposed on individuals, the penalty may be imposed on a person to whom no fault can be attributed in the violation of the law that caused the punishment. The system of fines thus arouses great dissatisfaction among market participants. An analysis of the system of administrative penalties in Poland raises the issue of harmonizing solutions on the scale of the European Union, as it is expected that penalties should be of similar size in all member states. However, the statutory enshrinement of high penalties in the current legislation does not prejudge the practice of imposing them. Given the smaller revenues generated in Poland, the penalties imposed should be proportionately lower. Moreover, the law does not categorically require the imposition of high penalties. The legislation often uses the word “may,” from which some people draw conclusions about the imposition of penalties under administrative discretion, which is not legitimate.
Prevalence and correlates of unintentional nonfatal injuries among school-going adolescents in Central America
Authors: Pengpid Supa , Peltzer Karl
Published: December 2023

Objectives

The aim of this study is to report on the frequency of serious physical injuries (SPI) among adolescents in Central America during the previous decade, 2009–2018.

Methods

In total, 15,807 school adolescents (14.4 years mean age; SD=1.4) from six Central American countries participated in cross-sectional Global School-based Student Health Surveys in 2009–2018 (ranging from 1,779 students in Honduras in 2012 to 4,374 students in Guatemala in 2015).

Results

The prevalence of SPI was 33.8 % (22.9 % once, 7.4 % 2 or 3 times and 3.6 % 4 or more times), ranging from 31.8 % in Guatemala to 45.0 % in Belize and 45.6 % in Panama. The most frequent causes of SPI included fall (11.4 %, ranging from 6.9 % in Costa Rica to 15.6 % in Panama), and the type of SPI was fracture/dislocation (5.7 %, ranging from 4.3 % in Costa Rica to 6.7 % in Panama). In adjusted Poisson regression, male sex, food insecurity, a history of alcohol intoxication, soft drink consumption, fast food intake, truancy, multiple sexual partners, psychological distress, physical fight, physically attacked, bullied, and suicide attempt were significantly associated with a higher number of injury event counts.

Conclusions

Overall, about one in three adolescents in Central America had sustained unintentional injuries in the past 12 months and several contributing factors were identified which if addressed could aid injury prevention among adolescents.
Effects of the COVID-19 pandemic on the incidence of central precocious puberty; a narrative review
Authors: Hoskyns Rebecca B. , Howard Sasha R.
Published: December 2023

Central precocious puberty (CPP) is the premature activation of the hypothalamus–pituitary–gonadal axis, resulting in the early development of secondary sexual characteristics. CPP classically occurs before the age of 8 years in girls and 9 years in boys. The aetiology of this precocious onset of puberty is governed by complex mechanistic interactions between genetic and environmental factors. The rates of CPP have been documented to have been rising before the COVID-19 pandemic; despite this, the incidence of CPP has increased exponentially since the start of the pandemic. There are multiple theories potentially explaining this change in incidence of CPP over COVID-19. These include the direct effect of SARS-coV-2 infection, increasing body mass index of adolescents over sequential lockdowns, changes in sleep patterns, increased use of electronic devices and levels of stress, and additionally potential earlier detection of signs of CPP by parents and carers. Whilst there is evidence from observational cohorts, case studies and animal models for each of these factors, it is difficult to definitively prove which has had the greatest impact due to the mainly retrospective nature of the human research that has been conducted. Moreover, studies set in diverse settings with varying population make comparison complex. Additionally, each country responded differently to the COVID-19 pandemic and the lockdowns varied between locations, hence the effect of lockdown was not equal or universal. Despite this, similar trends have been identified, with various lifestyle changes that occurred over the pandemic being potentially influential factors on the development of CPP.
Power of Unit Root Tests Against Nonlinear and Noncausal Alternatives with an Application to the Brent Crude Oil Price
Authors: Bec Frédérique , Guay Alain , Nielsen Heino Bohn , Saïdi Sarra
Published: December 2023

The increasing sophistication of economic and financial time series modelling creates a need for a test of the time dependence structure of the series which does not require a proper specification of the alternative. Indeed, the latter is unknown beforehand. Yet, the stationarity has to be established before proceeding to the estimation and testing of causal/noncausal or linear/nonlinear models as their econometric theory has been developed under the maintained assumption of stationarity. In this paper, we propose a new unit root test statistics which is both asymptotically consistent against all stationary alternatives and still keeps good power properties in finite sample. A large simulation study is performed to assess the power of our test compared to existing unit root tests built specifically for various kinds of stationary alternatives, when the true DGP is either causal or noncausal, linear or nonlinear stationary. Based on various sample sizes and degrees of persistence, it turns out that our new test performs very well in terms of power in finite sample, no matter the alternative under consideration. The proposed approach is illustrated using recent Brent crude oil price data.
Combining Large Numbers of Density Predictions with Bayesian Predictive Synthesis
Authors: Chernis Tony
Published: December 2023

Bayesian Predictive Synthesis is a flexible method of combining density predictions. The flexibility comes from the ability to choose an arbitrary synthesis function to combine predictions. I study choice of synthesis function when combining large numbers of predictions – a common occurrence in macroeconomics. Estimating combination weights with many predictions is difficult, so I consider shrinkage priors and factor modelling techniques to address this problem. These techniques provide an interesting contrast between the sparse weights implied by shrinkage priors and dense weights of factor modelling techniques. I find that the sparse weights of shrinkage priors perform well across exercises.
Transformation of the management system of «La Lega» political party in Italy after 2013
Authors:   MGIMO University, Samorodov Artem
Published: December 2023

In today’s realities, right-wing parties across Europe are rapidly gaining strength, attracting the special attention of researchers. In the Italian context, the right-wing «League» party is of interest, which in almost 10 years has been able to turn from disparate movements into one of the flagships of the right-wing coalition. The question of the reasons for such popularity is relevant both for Italy and for the whole of Europe, since the «League» is part of the current government, and its rating remains at a high level. The purpose of the article is to trace the evolution of the party management system, the formation of which occurred in 2013. It seems appropriate to consider the process of its formation under the leadership of Umberto Bossi; to analyze the structure of the «League» and the results of the 2018 elections in order to understand how successful the changes made by Matteo Salvini were. Following the evolution of the «League», we can conclude that the transformation of the management system occurred in response to the crisis of 2012, which undermined the trust of the electorate and destroyed the main system links of the party itself. There was a need to change not only communication, but also the organizational structure. As a result, a vertical structure was rebuilt, where de facto power is concentrated in the hands of the Federal Secretary, the position occupied by Matteo Salvini. The strategy was adjusted, the rhetoric softened, the positioning of the party and party logos changed, which allowed expanding the former party base and electorate. At the same time, the «League» was able to preserve its historical roots: the protection of traditional values and Italian identity
Getting citizens to conserve water: A comparison of crisis responses in Bogota and Mexico City
Authors: Boyes Christina , Andersson Krister
Published: December 2023

How can global megacities respond to increased threats from natural hazards? Looking at hazard events that produced drinking water crises in Bogota, Colombia, and Mexico City, Mexico, we compare these cities’ efforts to decrease potable water consumption. We ask how and why the socioeconomic and biophysical contexts shape city policymakers’ responses to water crises and consider the immediate and lasting impacts of technical and behavioral interventions. Leveraging our 2 case studies in Latin America, we identify how the unique policy contexts affected the interventions used and helped determine their outcomes. Four factors are identified as particularly relevant as follows: the differential roles of scientific and technical perspectives in each context, the role of ideology, the complexity of the environmental policy problems in each setting, and the varied roles of policy entrepreneurs in Bogota and Mexico City.
Géneros y colaboraciones en la pintura madrileña de la segunda mitad del siglo XVII: a propósito de los lienzos de Bartolomé Pérez en el retablo mayor de Santa María de Gumiel del Mercado (Burgos)
Authors: Gutiérrez Pastor Ismael
Published: December 2023

La especialización de los pintores madrileños del siglo XVII, la organización de sus talleres y la complejidad de ciertos encargos propició la colaboración entre maestros, oficiales y discípulos, así como entre pintores independientes. El objetivo de este artículo es analizar una serie de pinturas de Bartolomé Pérez de la Dehesa (Madrid, c.1634-1698) que no han tenido la repercusión que merecen entre los historiadores de la pintura española y en especial entre los que con mayor dedicación se han ocupado de los géneros de la naturaleza muerta y de la pintura de flores. Se trata de los seis lienzos de la vida de la Virgen que se encuentran en el retablo mayor de la iglesia de Santa María de Gumiel del Mercado (Burgos), realizados hacia 1683-1684. A través de ellos se aborda la personalidad de Pérez como pintor y se revisan algunas guirnaldas con figuras al modo de las composiciones de Jan Brueghel de Velours, Daniel Seghers y Mario Nuzzi para plantear algunos casos y ejemplos de colaboración de Pérez y de otros pintores contemporáneos.
La reinvención del arte (grandezas y miserias del siglo XX)
Authors: Ramírez Juan Antonio
Published: December 2023

Al hacer una especie de balance general del arte del siglo XX constatamos unas transformaciones tan grandes que se puede hablar de una verdadera "reinvención" del término. Aquí se intenta evaluar el alcance de esas transformaciones analizando unos pocos ejemplos relativos a cinco ámbitos: la naturaleza, el objeto, el cuerpo, el artista y el espectador. Se examinan también al final otras cinco "promesas incumplidas": la igualdad, el amor, la liberación personal, la democratización del arte y el desastre ecológico.
Sobre las pinturas del Colegio Imperial de Madrid en Santa Cruz de Retamar (Toledo): una inédita "Nuestra Señora del Amparo" del estilo de Francisco de Zurbarán
Authors: Gutiérrez Pastor Ismael
Published: December 2023

La expulsión de los Jesuitas en 1767 produjo la dispersión de gran parte de sus colecciones artísticas, en especial de aquellas que estaban en las dependencias domésticas de los colegios. El Colegio Imperial de Madrid fue uno de los más afectados y de su extensa colección de pinturas son muy pocas las que han llegado hasta nuestros días. En este trabajo se propone la identificación de una pintura que perteneció al Colegio Imperial, su atribución a Francisco de Zurbarán y las razones por las que una obra de su importancia no dejó huella en la literatura artística de los siglos XVIII y XIX.
Los enterramientos reales de Córdoba y el particularismo religioso andalusí en el contexto de la arquitectura funeraria islámica hasta el siglo X
Authors: Abad Castro Concepción , González Cavero Ignacio
Published: December 2023

En este artículo nos preguntamos por la ausencia material de un mausoleo dinástico en la Córdoba Omeya. Analizamos las noticias referidas a los enterramientos de los monarcas, en las diversas fuentes, y ello nos lleva a plantear el particularismo cordobés en este aspecto, en gran medida determinado por las prácticas religiosas Malikíes.
La procesión fúnebre como tema artístico en la Baja Edad Media
Authors: Pérez Monzón Olga
Published: December 2023

En la Baja Edad Media, lo funerario conformó un preciso ceremonial que, en su dimensión pública, hemos de situar en la esfera de lo propagandístico. En el presente artículo, analizamos la migración a materia artística de cada fase de ese ceremonial prestando una atención especial a las exequias fúnebres y su casuística propia que determinó la transformación de unas comitivas de condición arquetípica en un símil de "pasos vivos" de las ceremonias de exequias que "de facto" ocurrieron en los siglos medievales.
La catedral de Cádiz de Vicente de Acero: la provocación de los textos
Authors: Marías Franco Fernando
Published: December 2023

La catedral de Cádiz, la última que se proyectó antes de la aparición de la Academia, ha sufrido en su estudio histórico los salvajes ataques que le dirigió esta institución desde finales del siglo XVIII. En este artículo se completa su estudio con la publicación de los textos que publicó el propio arquitecto Vicente de Acero y Acebo, y las notas de sus detractores y críticos, a través de los panfletos que imprimieron para darlos a conocer a la opinión pública.
Pintores homónimos en torno a un dibujo de Adán y Eva firmado por Luis Fernández en 1626
Authors: Gutiérrez Pastor Ismael
Published: December 2023

El estudio de un dibujo de Adán y Eva, firmado y fechado por Luis Fernández en 1626, y la necesidad de encuadrarlo en el contexto de la pintura madrileña de la primera mitad del siglo XVII ha obligado a revisar los documentos y las obras de varios pintores homónimos que trabajaron en Madrid durante ese periodo. La definición de sus personalidades a través de las pinturas y documentos ha permitido individualizar hasta cuatro pintores de igual nombre, pero la atribución del dibujo a alguno de ellos sigue planteando por el momento dificultades insalvables
"Ante Obitum Mortuus, Post Obitum Vivus". Zurbarán y la representación del cuerpo de San Francisco
Authors: De Carlos Varona María Cruz
Published: December 2023

Este artículo analiza el ejemplo de las representaciones del cuerpo de San Francisco de Asís en su sepulcro tal y como, según la tradición franciscana, fue contemplado por el papa Nicolás V. Ello permite reflexionar sobre el concepto del cuerpo santo en la sociedad hispana de la época Moderna. El artículo se centra en las pinturas de este tema realizadas por Francisco de Zurbarán hacia 1640-1650, considerándolas no sólo una innovación iconográfica, sino un paso más en la elaboración de la idea del Alter Christus y, debido a las peculiares circunstancias de los restos de Francisco, como sustitutas de sus reliquias originales.
Arquitectura y urbanismo en la Sevilla ochocentista: la plaza-mercado de la Encarnación
Authors: Fernández González Alberto
Published: December 2023

El presente trabajo analiza la historia constructiva de la plaza-mercado de la Encarnación de Sevilla, desde su configuración como espacio urbano, en tiempos de José I Bonaparte, hasta finales del siglo XIX. Se estudia, por tanto, el mercado provisional de madera que diseñó probablemente José Echamorro, y el definitivo, labrado en fábrica según proyecto del arquitecto académico Melchor Cano. También se valoran las diferentes planimetrías custodiadas en el Archivo Municipal de Sevilla, algunas inéditas todavía; y se dan a conocer y estudian tres valiosos pianos del Archivo Histórico Nacional que documentan gráficamente el plan de intervención previsto por Cayetano Vélez
Autonomía, imagen y reafirmación institucional: Un uso de la imagen en la Magistral de Alcalá a mediados del siglo XVI
Authors: González Ramos Roberto
Published: December 2023

El presente artículo pretende dilucidar las causas y los objetivos del encargo de una pintura que se encontraba en la iglesia Magistral de Alcalá de Henares. La obra, de mediados del siglo XVI, parece estar ligada a la lucha entre ésta, en tanto que parte del entramado institucional de la Universidad Complutense, y los arzobispos de Toledo, por el control de sus prebendas y jurisdicción.
Nuevos datos documentales sobre el Colegio de Doña María de Aragón de Madrid
Authors: Andueza Unanua María del Pilar
Published: December 2023

El desaparecido colegio de doña María de Aragón en Madrid fue erigido a partir de 1581 siguiendo los planos de los arquitectos Juan de Valencia y Francisco de Mora. En este artículo se adelanta cronológicamente la presencia de Francisco de Mora en el proceso constructivo y se amplían sus aportaciones al documentar su intervención no sólo en el claustro, ya conocida, sino también en la iglesia y en la casa de patronato. Asimismo se ofrece el nombre de varios artistas que participaron tanto en las obras como en la dotación del exorno artístico y ajuares litúrgicos del templo.
Víctimas y verdugos en las ilustraciones de Le chants de Maldoror de Dalí
Authors: Moure Pazos Iván
Published: December 2023

El presente artículo pretende arrojar luz sobre la obra grabada de Dalí para Les Chants de Maldoror.
Concretamente, se analiza la relación entre verdugos y víctimas a través de dos figuras principales: la mantis y el burócrata caníbal, a fin de extendernos en aquello que Juan Antonio Ramírez ha designado como "Mataderos" dalinianos.
Comparative effects of transcutaneous electrical nerve stimulation [TENS] along with therapeutic exercises and theraband exercises on pain, disability and muscle strength in knee osteoarthritis
Authors:   IIMT University, Meerut, Motla Meenu , Singh Anshika ,   IIMT University, Meerut, Raghav Sumit ,   IIMT University, Meerut, Kumar Mukesh ,   IIMT University, Meerut, Nagar Khushi ,   IIMT University, Meerut
Published: December 2023

Purpose: to examined the effects of resistance exercise using the theraband on the pain and function of patients with degenerative knee arthritis. Material & Methods: thirty patients with degenerative knee arthritis were classified into an one group of 20 patients on whom resistance exercise using the elastic band was applied and a other group of 20 patients on whom conventional physical therapy was delivered. Both groups received treatments three times a week for four weeks. Pain and disability and function were measured by the WOMAC index and muscle strength was evaluated by the Oxford scale on 1st day and after 4th week to follow-up the treatment. Results: the intragroup comparison Table 2, showed significant improvements in WOMAC index and Oxford scale in both groups. In the intergroup comparison after treatment, the group-2 showed significantly changes in the values with respect to pre to post intervention WOMAC index score; 33.7250±3.61879 to14.1800±1.76355 than the group-1 32.2305±7.88301 to 18.4400±2.62546. Furthermore there were significant improvement in Oxford scale score i.e. 2.6000±.50262 to 4.5000±.51299 found in group-2 than group-1 i.e. 2.4500±.51042 to 3.6000±.50262. Conclusion: the results suggest that resistance exercise using the theraband is an effective intervention for the pain and function of patients with degenerative knee arthritis.
AUT-M enterosorbent stabilizes glutathione system in vincristine-treated rats with dimethylhydrazine-induced colon cancer
Authors:   I. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine, Kachur O. I. , Fira L. S. ,   I. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine;, Lykhatskyі P. H. ,   I. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine;, Bekus I. R. ,   I. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine;, Kyryliv , M. V. ,   I. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine;
Published: December 2023

Colorectal cancer is one of the leading causes of mortality in the world. The search for new methods of therapy for this disease that could correct the state of oxidative stress during the development of neoplasms is up to date. The aim of this work was to study the level of reduced glutathione and the activity of glutathione-dependent enzymes in the development of 1,2 dimethylhydrazine-induced colon cancer in rats while treated with vincristine and the use of enterosorbent. To induce carcinogenesis, dimethylhydrazine was administered to male rats subcutaneously for 30 weeks at a dose of 7.2 mg/kg of body weight. The rats with induced colon cancer received entorosorbent per os at a dose of 0.2 g per 100 g of body weight daily for 21 days. After detoxification therapy, the rats were administered cytostatic vincristine daily at a dose of 0.23 mg/kg for 14 days. A decrease in the content of reduced glutathione, the activity of glutathione reductase and glutathione peroxidase in the blood and liver tissue of rats with colorectal cancer was established. The use of enterosorbent­ AUT-M was shown to be effective in stabilizing the indicators of the glutathione system in rats with induced colon cancer. Cytostatic vincristine did not significantly affect the change of the studied indicators, confirming the effectiveness of previous sorption measures. Keywords: blood, colorectal cancer, entorosorbent, glutathione, glutathione peroxidase, glutathione reductase, liver, vincristine
Response of the antioxidant system of wheat seedlings with different genotypes to exogenous prooxidants: the relationship with resistance to abiotic stressors
Authors:   Crop Research Institute, Prague, Czech Republic, Yastreb T. O. ,   Yuriev Plant Production Institute, National Academy of Agrarian Sciences of Ukraine, Kharkiv;, Kokorev A. I. ,   Yuriev Plant Production Institute, National Academy of Agrarian Sciences of Ukraine, Kharkiv;, Makaova B. E. ,   Poltava State Agrarian University, Poltava, Ukraine;, Ryabchun N. I. ,   Yuriev Plant Production Institute, National Academy of Agrarian Sciences of Ukraine, Kharkiv;, Sakhno T. V. ,   Poltava State Agrarian University, Poltava, Ukraine;, Dmitriev A. P. ,   Institute of Cell Biology and Genetic Engineering, National Academy of Sciences of Ukraine, Kyiv, Ukraine;, Kolupaev Yu. E. ,   Yuriev Plant Production Institute, National Academy of Agrarian Sciences of Ukraine, Kharkiv;,   Poltava State Agrarian University, Poltava, Ukraine;
Published: December 2023

Oxidative stress is an important component of heat- and drought-induced damage in plants. However­, information on the relationship between the resistance of cultivated plants with different genotypes to environmental factors and their ability to maintain a pro-/antioxidant balance remains contradictory. This study aimed to compare the growth responses and adaptation ability of the antioxidant system in different wheat cultivars to oxidative stress agents hydrogen peroxide and iron(II) sulfate. Etiolated seedlings of common winter wheat (Triticum aestivum L.) Antonivka and Tobak (heat- and drought-tolerant), and Avgustina and Doskonala (not resistant to heat and drought) were used for the study. Three-day-old etiolated seedlings were exposed to 50 mM H2O2 or 5 mM FeSO4 for one day. It was found that seedlings of Antonivka and Tobak cultivars treated with H2O2 or FeSO4 were able to maintain relatively intensive growth, accumulated significantly lower amounts of endogenous hydrogen peroxide and lipid peroxidation products, significantly increased anthocyanin content and had a higher activity of SOD and catalase as compared with non-resistant cultivars. The non-tolerant cultivars’ response to stress agents was only to increase proline content with a simultaneous decrease in SOD activity and anthocyanins content. The identified varietal markers of the antioxidant system adaptive strategy can be used to develop new approaches for screening wheat cultivars with cross-resistance to major abiotic stressors. Keywords: antioxidant system, drought resistan­ce, ferrous sulphate, H2O2, heat tolerance, oxidative stress, Triticum aestivum seedlings
Discovery of molecular and genetic mechanisms of cell cycle regulation: 2001 Nobel laureates leland Hartwell, Timothy Hunt and Paul Nurse
Authors:   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Matyshevska O. P. , Danilova V. M. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv;, Grigorieva M. V. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv;, Komisarenko S. V. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv;
Published: December 2023

Leland Hartwell, Paul Nurse and Timothy Hunt in 2001 were awarded the Nobel Prize for their discovery of molecular and genetic mechanisms of the cell cycle. The review analyzes the features of the objects chosen by scientists, a wide range of methods from conventional light microscopy to recombinant DNA technology and complementation test, used for research, and covers a history of the discoveries made. Thanks to the work of these scientists, a modern­ understanding of the cell cycle checkpoints, the complexes formed by cyclin and cyclin-dependent­ kinases at different phases of the cell cycle, as well as the mechanism of periodic cyclin degradation and the universality of the cyclin mechanism of cellular division in all living organisms was gained. Keywords: cdc mutants, cdc2/cdc28, cdk protein kinase, cdk/cyclin complex, cell cycle, cyclin, Saccharomyces cere­visiae, Schizosaccharomyces pombe
Advantages of periodic non-stationary random process model in vibration signal processing
Authors:   Karpenko Physico-Mechanical Institute of the NAS of Ukraine, Javorskyj I. M. ,   Bydgoszcz University of Sciences and Technology, Yuzefovych R. M. ,   Karpenko Physico-Mechanical Institute of the NAS of Ukraine,   Lviv Polytechnic National University, Lychak O. V. ,   Karpenko Physico-Mechanical Institute of the NAS of Ukraine, Komarnytskyi B. R. ,   Karpenko Physico-Mechanical Institute of the NAS of Ukraine
Published: December 2023

The use of two different techniques for the analysis of vibration signals, whose carrier harmo¬nics are modulated by high-frequency narrow-band random processes is discussed. Periodically non-stationary random processes (PNRP) are suitable models for description of vibration signals of damaged mechanism. A proposed processing technique can be considered as an alternative to squared envelope analysis, kurtosis techniques, squared envelope spectrum (SES) and its use in the analysis of a vibration signal is discussed. It is shown that the spectral estimates obtained by the envelope square method are biased and inconsistent. The possibility of obtaining of the unbiased estimates by the PNVP method even for a signal/noise ratio equal to 0.07 has been demonstrated.
The effect of different non-Saccharomyces strains on the flavour characteristics of mead
Authors: Bai X. , Gao H.F. , Li X. , Li Y.L. , Lan M.Z. , Li L. , Zhao Z.D. , Li Z.B. , Wang J.
Published: December 2023

As research advances, it is generally acknowledged that non-Saccharomyces yeast contribute to the addition of aromatic compounds during mead fermentation. In this experiment, eight different non-Saccharomyces strains and Saccharomyces cerevisiae co-fermentation, their aroma composition, and basic physicochemical parameters were investigated. More than 30 compounds with favourable impact were discovered using solid-phase microextraction (SPME) coupled to gas chromatography-mass spectrometry (GC-MS). Co-fermentation of non-Saccharomyces spp. and S. cerevisiae can affect the concentration of volatile compounds, so that the mead presents different aroma characteristics. Co-fermented meads of Wickerhamomyces anomalus strains and S. cerevisiae (Wa 27-Sc and Wa 5-Sc) had higher alcohol, acids, aldehyde, and ester concentrations than those fermented with S. cerevisiae alone. In terms of taste, Wa 27-Sc was superior to Wa 5-Sc. Overall, the Wa 27-Sc received the highest score for its strong secondary aroma and good mouthfeel. The results show that the W. anomalus Wa 27 strain has a good potential to produce high quality mead.
The Issue of Synonymy between the Words Al-Hulm and Al-Ru’ya in Surah Yusuf: A Quranic Semantics Study
Authors: Al Farabi Fahmi Akhyar , Sabilul Wafda
Published: December 2023

The issue of synonymy in the Holy Qur'an is one of the important controversial issues between scholars and those working with the Qur'an and its sciences, ancient and modern. Some scholars prove the occurrence of synonymy in the Qur'an by the difference in the two words and the meaning being the same, and some of them deny its occurrence by the complete lack of synonymy between the two words. It is one of the synonymous words in the Qur'an, including Al-Hulm and Al-Ru'ya. This study aims to clarify and answer detailed implications in the meaning of the words Al-Hulm and Al-Ru'ya in Surah Yusuf. The type of this study is a desk study to obtain facts about the semantic meaning between these two words using the descriptive and analytical approach to solve study problems. The results of this research are that the semantic study reveals great secrets and wondrous wisdom that can only be imagined by those who contemplate this great miracle of the Qur'an. The words al-Hilm and al-Ru'ya have synonymy and context comparison. Regarding synonymy, these two words have the same meaning: dream. Meanwhile, in a comparative context, the verses in al-Ru'ya show dreams and are revelations sent down by Allah SWT to His Prophet and can be interpreted. As for al-Hilm in context, it has no meaning and does not require interpretation, and it is associated with Satan, and it is not permissible for Muslims to talk about it because it is part of Satan's play.
Estimation of the electrodynamics parameters of the multilayer strip-slot transition based on the approximation of its equivalent circuit by the chebyshev filter of the first kind
Authors:   South Ural State University (National Research University), Fomin D. G. , Darovskikh S. N. ,   South Ural State University (National Research University)
Published: December 2023

The basic structural element of volume-modular microwave devices is a multilayer strip-slot transition, which provides electromagnetic coupling between its layers in a wide frequency range. The mathematical model of the multilayer strip-slot transition is known. It is based on the use of circuit analogies of its design elements. However, in the papers related to the study of its equivalent circuit only the amplitude-frequency dependences are reflected without analyzing other electrodynamics parameters, such as: phase-frequency characteristics and dependences of the input impedance on frequency. The purpose of this paper is to estimate the electrodynamics parameters of the multilayer strip-slot transition based on its equivalent circuit, approximated by the Chebyshev filter of the first kind and to conduct a comparative analysis of the results of its circuit and electrodynamics simulations. At the same time, the following simulation results are compared: 1) amplitude-phase characteristics of the functions of the reflection coefficient and transmission coefficient; 2) change in input impedance in the frequency range. As a result of the study it has been established that the equivalent circuit of the multilayer strip-slot transition can be approximated by the Chebyshev filter of the first kind. It allows to determine the necessary characteristic impedances of strip and slot resonators by given return/insertion losses in the pass band and their cutoff frequencies, while reflecting all electrodynamics characteristics correctly.
Research on characteristics of nonstationarity of the troposcatter communication channel
Authors:   JSC NPP «Radiosvyaz», Vorobev N. A. , Luferchik P. V. ,   JSC NPP «Radiosvyaz», Shtro P. V. ,   JSC NPP «Radiosvyaz», Bogatyrev E. V. ,   JSC NPP «Radiosvyaz»
Published: December 2023

This paper presents the results of experimental research on the characteristics of multipath and non-stationarity of the tropospheric communication channel carried out on the 144 km long Krasnoyarsk-Balakhta path, at a radio signal transmission frequency of 5 GHz. The obtained measurement data may be used in modeling of the tropospheric channel in the process of designing tropospheric communication systems to evaluate the effectiveness of the developed algorithms designed to improve the energy efficiency of tropospheric communication systems.
Estimation of the Immunity of a Satellite Communication System Based on Wideband Signals in Relation to Impulse and Fluctuating Interferences
Authors:   Ural Federal University named after the first President of Russia B. N. Yeltsin, Mikhailik D. A. , Malygin I. V. ,   Ural Federal University named after the first President of Russia B. N. Yeltsin
Published: December 2023

A model of a satellite communication system based on wideband signals with relative diphase encoding is developed in the paper. A system of four signals with binary phase shift keying is used. Spectra of the signals are spread by the direct sequence technique. The developed system operation under conditions of impulse electromagnetic interference and under the influence of fluctuation interference is simulated. The dependences of bit error rate on signal-to-interference ratio are evaluated in the cases of impulse interference with Johnson distribution and white Gaussian noise affecting the signal.
Mechanisms of ensuring the accuracy and reliability of data transmission over a radio channel using relay technology and their implementation on transceivers with LoRa modulation
Authors:   Ural Federal University named after the first President of Russia B. N. Yeltsin, Luchinin A. S. , Malygin I. V. ,   Ural Federal University named after the first President of Russia B. N. Yeltsin, Starikov S. I. ,   Ural Federal University named after the first President of Russia B. N. Yeltsin, Chechetkin V. A. ,   Ural Federal University named after the first President of Russia B. N. Yeltsin, Shegal A. A. ,   Ural Federal University named after the first President of Russia B. N. Yeltsin, Belkov S. A. ,   Ural Federal University named after the first President of Russia B. N. Yeltsin
Published: December 2023

The article is devoted to a detailed description of the algorithms of the operation of the relay-race data transmission system over a radio channel, which ensure high reliability of transporting the results of monitoring the operation of extended objects to the central control panel. The feature of the system is operation at a low power level of transmitters, energy efficiency, which ensures a long-term operation without maintenance, the ability to replace failed elements quickly without stopping the entire system, mobility — quick installation and start-up of the system. Energy efficiency and operation of the radio channel with a low transmitter power level is ensured by the use of SX 1276 (LoRa) transceivers. The accuracy and reliability of data transmission is ensured by original algorithms, which are described in the paper. In the relay data transmission system, it is possible to use up to 255 relay nodes with their installation at a distance of up to 4 km from each other. Two options of building a system with relay-race transmission have been developed: a system with a simple handover, a system with transmission «Through one». The second option provides more reliable data transfer and higher probability of uptime. With the number of relay nodes equal to 50, the probability of failure-free operation of a simple system is 0.268, and for the system with «Through one» transmission is 0.985.
Frequency characteristics of strip modules of the quasi-chaotic signals formation based on bulk nonlinear optical crystals
Authors:   Tomsk State University of Control Systems and Radioelectronics, Arutyunyan A. A. , Malyutin N. D. ,   Tomsk State University of Control Systems and Radioelectronics, Malyutin G. A. ,   Tomsk State University of Control Systems and Radioelectronics, Podzyvalov S. N. ,   LLC «Laboratory of optical crystals», Yudin N. N. ,   National Research Tomsk State University,   Institute of Atmospheric Optics named after Academician Zuev SB RAS
Published: December 2023

In this paper the experimental study of frequency dependences of scattering matrix coefficients of strip modules based on a coplanar strip line with partial dielectric filling in the form of bulk non-linear optical crystals of quartz, potassium titanium phosphate (KTP), zinc germanium diphosphide, lithium niobate has been performed. The appearance of the effect of forming quasi- chaotic oscillations in modules containing KTiOPO4, ZnGeP2, LiNbO3 bulk crystals when LFM signals are fed at fast switching of incident wave direction in the receiving and transmitting tract of the vector network analyzer is demonstrared. Parameters of comparative characterization of crystal materials are introduced. The complete phase of the modulus transmission coefficient is determined. The analysis of its physical sense is made, followed by processing complete phase shift, which provides the possibility to develop the algorithm of estimating the frequency dependence of crystal’s relative permittivity. The studied modules may be used as formers of quasi- chaotic microwave signals.
Joint calculation of mechanical and radar characteristics of calibration folding spherical reflectors
Authors:   Mozhaisky space military academy, Samorodov A. A. , Soluyanov A. A. ,   Mozhaisky space military academy
Published: December 2023

Combined modeling of the shape of the surface of the grid canvas belt stretched on the wireframe and statistical radar characteristics of the calibration reflector has been performed. To solve the problem, a complex computer model is proposed and implemented. The model provides analysis of the stress state of the grid canvas belt forming the surface of the folding spherical reflector, numerical electrodynamic calculation of the spatial backscattering diagram and estimation of statistical radar characteristics corresponding to the arbitrary location direction in the process of observation. Using the complex computer model, the equilibrium shape of the reflecting surface has been calculated for the selected design version of the folding spherical reflector, the facet 3D electrodynamic model has been developed, spatial backscattering diagrams have been calculated and statistical RCS characteristics for various wave sizes of the object have been evaluated. The presented complex computer model may be used in studies related to analysis of radar characteristics of calibration folding spherical radar reflectors with various versions of power wireframe design.
Algorithm of monopulse measurement of aircraft angular position using an artificial neural network
Authors:   Saint-Petersburg State University of Aerospace Instrumentation, Semenov L. M. ,   LLC “NPK “Technologies. Investment.Management”, Fridman L. B. ,   Saint-Petersburg State University of Aerospace Instrumentation,   LLC “NPK “Technologies. Investment.Management”
Published: December 2023

The possibilities of using artificial neural networks in processing radar data are considered. The possibility of using a neural network for measuring the angular position of an aircraft by monopulse method is proved. An algorithm based on the sharing use of standard monopulse angle measurement method and a neural network is proposed. The analysis of the efficiency of the proposed algorithm at different signal-to-noise ratios is accomplished.