bluuebunny/crossref_metadata_2025 huggingface dataset:
The Kibble equation of scalar field and the absenceof scalar ”hair” in a static Black hole in the tetrad theoryof gravity
Authors: Guts A.K.
Published: November 2024

In the article a theorem in the framework of the tetrad theory of gravity isproved, under the conditions of which on a scalar field, it can be argued that a staticblack hole does not have the Kibble scalar ”hairs”. In other words, such a black holeis characterized only by one physical quantity - mass, and it has no baryon number.
Complete group of isometries of the special three-dimensional Lie group
Authors: Podoksenov M.N. , Yang G.
Published: November 2024

We consider a special three-dimensional Lie algebra 3 of Bianchi type V. A matrix representation of this Lie algebra and the corresponding connected simply connected Lie group 𝑆3 is found and natural coordinates are introduced, which are determined by the matrix representation. Formulas for exponential mapping with respect to natural coordinates are found. Complete groups of autoisometries of the special Lie algebra with respect to the Euclidean or Lorentz scalar product are written out. The leftinvariant Riemannian metric of the Lie group 𝑆3 and the complete group of isometries of the resulting homogeneous manifold are found. This manifold turned out to be a space of constant Ricci curvature.
Group theoretical description of periodic system of elements. V: weight diagram
Authors: Varlamov V.V.
Published: November 2024

The root structure of the subalgebras of the group algebra of a conformal group in the framework of a twofold covering is analyzed. Based on the analysis, the Cartan-Weyl basis of the group algebra is determined. The root and weight diagrams are constructed. A mass formula associated with each node of the weight diagram is introduced.
On some aspects of engineering solution to the angle trisection problem: history and new solution algorithm
Authors: Skazochkin A.V.
Published: November 2024

The article is devoted to the history of the formulation and solution of the problem of trisection of an angle - dividing an angle into three equal parts using a compass and a ruler, which has a history of more than 2.5 thousand years. Traditionally, the origins of the problem were associated with the practical activities of masters and artisans of Ancient Greece, but it is known that with the help of simple practical techniques or small assumptions in the original formulation, the problem is completely solvable. It is shown that the problem of angle trisection is based not on practical interest, but on deeper grounds related to the worldview of the philosophers and mathematicians of Hellas and the historical course of development of mathematics. In particular, with the methodological work of representatives of the Pythagorean school, who created geometric algebra with objects in the form of lines, circles and tools for their construction - compasses and rulers. On the other hand, the engineering approach, the origins of which are also located in Ancient Greece, allowing in the solution process the use, in addition to compasses and rulers, notches, scales, additional curves and any drawing tool that creates a finite thickness of drawn lines, allows us to solve the problem of trisection of an angle. As an example of an engineering approach to the problem of trisection of an angle, the original solution of the author of the article is given, using a compass, a ruler and a drawing object having a finite thickness. The proposed algorithm makes it possible to mathematically solve the problem of trisection of an angle with any accuracy. From a historical perspective, it is surprising that the tradition of formulating the search for a solution to the problem of trisection of an angle only with the help of a compass and a ruler, while rejecting numerous possibilities of the engineering approach, remained and was supported by all subsequent generations of mathematicians for 2.5 thousand years until the present day.
Differential pursuit-evasion game based on reinforcement learning
Authors: Chukanov S.N. , Chukanov I.S. , Leykhter S.V.
Published: November 2024

The paper discusses optimal control algorithms based on actor/critic reinforcement learning (RL) schemes. The algorithms are used to solve pursuit-evasion (PE) problems of differential games. The work focuses on the implementation of agent policy decisions in accordance with the concept of adaptive dynamic programming. The essence of solving the PE game problem is to obtain the control policy of each agent (pursuer and evader) on both sides of the game. The paper proposes an adaptive dynamic programming (ADP) method for solving Nash equilibrium policies in differential pursuit-evasion games for two players. The cost function approximation method is used to calculate the parameters of a neural network (NN) without directly solving the Hamilton-Jacoby equation.
Power in History: State and Economic Factors
Authors: Dus Yu.P.
Published: November 2024

The correlation of military-political and economic factors in the development of civilization is analyzed. A periodization is proposed, which allows to reflect the role of state bodies and the economic class at various historical stages. On the basis of fundamental theories, the dynamics of the principles of interaction between civilizations and countries in the past and today are reflected. The assessment of the movement of power centers in the context of globalization is given.
Unpublished Pages of George Fedotov's Dairy
Authors: Antoshchenko A.V.
Published: November 2024

The diary notes of the famous Russian emigre historian, religious thinker and publicist George Fedotov are published for the first time. They were preserved in copies made by Z.O. Mikulovskaya and Iu.P. Ivask and kept in the private archives of V.V. Jantzen and at the Center for Russian Culture of Amherst College (USA). Small in volume records quite fully represent the spiritual quest of their author during his trip to England in 1935 and the difficult, and full of dangers moving from France to the USA in 1940-1941. The text of the diary is brought into conformity with modern norms of spelling with preservation of some features of author's spelling of separate words and punctuation.
Composition and Structure of the Study Bulletine Convolution at the End of the XVIII Century
Authors: Bytko S.S.
Published: November 2024

The article is devoted to the features of acquisition of the Old Believers' collection of non-permanent composition. An attempt was made to date and attribute the monument. The archaeographic analysis of the book made it possible to reveal the specifics of the interaction between the printed and manuscript traditions of Old Believers at the turn of the eighteenth and nineteenth centuries.
Jubilee of V. G. Ryzhenko
Authors: Yakub A.V. , Mamontovа M.A.
Published: November 2024

Colleagues congratulate V.G. Ryzhenko with the jubilee, emphasizing the significant contribution of the scientist-teacher to the development of historical and cultural studies, the higher school and the cultural space of the Omsk region.
A. A. Bogdanov's Interpretation of Revolution 1917
Authors: Teplyakov D.A.
Published: November 2024

Disclosured Bogdanov's characteristics of the February, the October 1917 year and revolutionary active condition between them. Said about Bogdanov's insight of necessity resolve peasant's problem. Paid attention to Bogdanov's (as positivism philosopher) “fact of disparity people's humanity”. Gave his characteristic of the Bolshevism party and vision of GMC-prospect for Russia in dynamic. Analyzed discussion with Lenin about politic program of interjacent period. Author came to inference: Bogdanov - one of the first prophet, who said about potential distortion of socialistic society in the future.
Old trap for a new mule: A study on the role of financial systems in escaping the middle-income trap
Authors: Banerjee Srijanie , Sinha Manish , Kacker Mrinalini
Published: November 2024

The middle-income trap has been in developmental discussions for the better part of the last decade since the inability of most Latin American countries to break out of it. There is renewed interest in the concept since the realisation that one of the biggest economies in the world, i.e., China could be caught in it. While there is abundant literature on the part that social infrastructure and human capital development plays, the effect of financial systems is relatively ignored. This paper seeks to fill this gap by understanding the role of financial system variables in escaping the middle-income trap. By taking a sample of thirteen countries and using two classification techniques—Naive Bayes and random forest, it is concluded that both bank-based measures and market-based measures have an impact on income levels. These results have strong implications on understanding how to break out of the trap for policymakers.
I am, therefore I preserve: Exploring middle-class imagery, biased status perceptions, and pro-environmental behaviour
Authors: Kirsten Frederich , Biyase Mduduzi , Pretorius Marinda
Published: November 2024

Extensive research on pro-environmental behaviour (PEB) reveals a significant knowledge gap in understanding the influence of social class, perceived status and the middling tendency on pro-environmental behaviour. Using the International Social Survey Programme Environment dataset, and conducting multilevel mixed-effects linear regressions, we find that the middling tendency and biased status perceptions significantly influences pro-environmental behaviour. Those who deflate their social position have higher pro-environmental behavior and this reinforces the idea that pro-environmental behaviour is driven by a post-materialist effect rather than a status enhancement effect. Moreover, the objective middle class is still a stronger contributor to higher PEB levels compared to subjective middle class. We also find the relation between class, status and PEB vary by country. These findings provide vital insights into the intricate and heterogenous dynamics between class, status and pro-environmental behaviour among different countries and shed light on class and status as driving forces behind pro-environmental behaviour.
Influence of service quality, destination facilities, destination image, and satisfaction on tourist loyalty in Pasar Lama Chinatown, Tangerang City
Authors: Ridolloh Rizal , Munizu Musran , Alam Syamsu , Umar Fauziah , Alkanan Omer Mohamed Taha
Published: November 2024

This study investigates the influence of service quality, destination facilities, destination image, and tourist satisfaction on tourist loyalty in the Pasar Lama Chinatown area of Tangerang City. Utilizing data from 400 respondents, the study employed structured questionnaires analyzed through descriptive statistics, reliability analysis, exploratory and confirmatory factor analysis, and structural equation modeling (SEM). The results reveal that service quality (β = 0.47, p < 0.001), destination facilities (β = 0.33, p < 0.001), and destination image (β = 0.4, p < 0.001) all significantly enhance tourist satisfaction, which in turn has a strong positive effect on loyalty (β = 0.58, p < 0.001). Direct paths also show that service quality, destination facilities, and destination image independently contribute to tourist loyalty. Bootstrapping confirms satisfaction’s mediating role between these factors and loyalty. Practical recommendations suggest prioritizing service quality improvements, facility enhancements, and a positive destination image to foster loyalty and promote tourism sustainability in Pasar Lama, China. These insights assist tourism managers in developing strategies to enhance long-term visitor retention and engagement in the area.
Artificial Intelligence’s Level of Development and Influence on the Automotive Supply Chain in Europe: A Case Study on Audi
Authors: CĂLINESCU Gabriela , IONEL Elena-Simona
Published: November 2024

Over the last few years, many factors have transformed the automotive supply chain in Europe. This paper addresses some of the issues that challenge this supply chain and discusses artificial intelligence’s implementation benefits, such as the elimination of bottlenecks, gaining an advantage on the procure-to-pay system of the automotive supply chain, and the automatic read of invoices. Qualitative methodology was used to analyse the information gathered within this study, using in depth literature review and checking important releases on this subject in scientific papers available, focusing also on the Audi case study that shows real application of artificial intelligence technology into their manufacturing process and the opportunities to further apply this in Europe. Major changes in European automotive supply chains are underway as a result of the adoption of artificial intelligence, not only solves existing problems but calls for advanced algorithms to be developed to meet new demands. The implementation of artificial intelligence needs to follow ethics, and in some cases needs human supervision. The use of artificial intelligence has both advantages and disadvantages. Some are analysed in this article and the important role of Germany as a pioneer in using artificial intelligence effectively in the automobile industry is emphasized by a case study on Audi.
TARÁNTULAS (ARANAE: THERAPHOSIDAE) REPORTADAS DEL DEPARTAMENTO LORETO, PERÚ
Authors: RAMOS RODRIGUEZ Maria Claudia , PANDURO VASQUEZ Richard Augusto , ZÁRATE GÓMEZ Ricardo , ANGULO-CAINAMARI Adan , MEYER Christoph , LAZO ALVAN José Humberto
Published: November 2024

Las tarántulas desempeñan un papel fundamental como reguladores de poblaciones de animales pequeños, y son esenciales para estudios de biodiversidad, biogeografía, comportamiento animal y comercio ilícito de especies. A pesar de su importancia, existe una carencia significativa de información sobre tarántulas en la Amazonía oriental del Perú. Con el objetivo de abordar esta brecha de conocimiento, hemos elaborado una lista exhaustiva de especies de tarántulas reportadas para el departamento de Loreto, utilizamos datos bibliográficos de publicaciones como artículos científicos, libros, tesis y resúmenes de congresos. Se reporta un total de 42 especies de tarántulas, correspondientes a cinco subfamilias: Theraphosinae (con 30 especies), Aviculariinae (con 6 especies), Psalmopoeinae (4 especies), Schismatothelinae (1 especie) e Ischnocolinae (1 especie), ninguna de estas se encuentra amenazada en categorías de conservación. De las ocho provincias del departamento de Loreto, Maynas reportó la mayor riqueza (con 21 especies), seguido de Putumayo (con 10 especies), ambos sectores fueron los más estudiados en Loreto. Mientras que la provincia Daten del Marañón tiene al menos dos especies de tarántulas. Esta información será sustancial para el desarrollo de estrategias efectivas de conservación y manejo de este importante grupo de invertebrados terrestres.
Is Puffin a Plus for Diversity in Young Adult Literature? The Move from Peacock to Puffin Plus
Authors: Sands-O'Connor Karen
Published: November 2024

From 1981 to 1994, Penguin Books published literature for young adults under the ‘Puffin Plus’ imprint. Although Penguin had been publishing young adult literature since 1962, through its ‘Peacock’ imprint, Puffin Plus’s editors tried to radically alter the way that books for teenagers were selected and marketed in order to increase their readership. But while Puffin Plus editors attempted to connect with readers through covers that mimicked magazine and advertising techniques, they ignored contemporary teens’ political activism and interest in the cultures and lifestyles of their peers. This had particular consequences for how Puffin Plus readers understood the place of Black British and British Asian teenagers as part of the book world. While Puffin Plus fiction did include more depictions of characters of colour, and nonfiction, short story and poetry collections included authors of colour, issues of race and racism remained largely elsewhere in time or place. White British racism, whether institutional or individual, was either ignored or, in some cases, erased. As Penguin Random House, one of the largest publishers of young people’s fiction in the world, continues to struggle with diversity and inclusion today, this article looks back to the historical roots of publishing for young adults during a time when, like today, Britain’s population was becoming more diverse and activist.
Impossible Relations, Ethical Relations: The Stakes of #OwnVoices Representation in LGBTQ Young Adult Fiction
Authors: Owen Gabrielle
Published: November 2024

This article analyzes trends in LGBTQ-themed young adult novels to consider the stakes and complexities of #OwnVoices-authored books. One question that emerges with #OwnVoices is whether it is necessary or desirable for the identity of the main character to match that of the author in terms of gender, sexuality, race, ethnicity, class, and ability. This is a particularly complex question when it comes to the many permutations of gender and sexuality. How closely must one’s identity align to be considered #OwnVoices? Can any LGBTQ-identified author write any LGBTQ-identified character? The goal of this article is to shift the terms of these questions. While #OwnVoices books, when taken as a whole, are undoubtably better at depicting complex, fully fleshed out, humanized LGBTQ characters, this analysis explores why and how complex and multi-dimensional representations occur, arguing that an ethical politics of representation does not rely on #OwnVoices authors. The nonlinearity and fluidity of queer phenomena likewise suggest that writers might explore and represent experiences and identities that have not yet been named and therefore cannot yet be claimed by authors. By shifting the terms of this discussion, we can distance the conversation about the politics of representation away from gatekeeping (who is allowed to do what) and instead engage more collaboratively in the project of resisting and negating existing prejudice.
"Chasing Ghosts and Doomed to Wander": Possibilities for Transnational Literacy Practices with Emiko Jean’s Tokyo Ever After
Authors: Kneeland Jillian M.
Published: November 2024

As national literary imaginaries become more global, so too do the possibilities for exploring young adult literature in its representation of transnational youth identities, representations reflecting youth often thrown into the tension of navigating multiple homelands. In carrying out a critical content analysis grounded in theories and concepts of transnationalism to Emiko Jean’s Tokyo Ever After (2021), I consider how readers might engage with the text and become aware of, and connected with, the lives of transnational youth through themes such as dichotomous selfhood, with the view that such awareness may encourage transformations of power. I argue for the use of transnational critical literacy of young adult literature as one approach to develop in youth audiences a better understanding of transnationalism and its influence on adolescent identity formation.
Social aspects of rehabilitation of the Bryansk region settlements affected by the Chernobyl NPP accident
Authors: Panov A. V. , Mikailova R. A. , Krechetnikov V. V.
Published: November 2024

Relevance. Currently, in the south-west of the Bryansk region, the settlements most affected by the Chernobyl NPP accident show the radiation exposure of about 30 % of the natural level without causing any negative impact on health. However, the settlements are still facing severe social challenges. Throughout the timespan after the Chernobyl accident, significant population decline has been observed in these settlements. Over the past 20 years, the number of residential settlements in the south-west districts of the Bryansk region has decreased by 22 % and the number of residents by 16%. Considering the long-lasting consequences of the Chernobyl disaster, social protection of the accident affected population and the development of radioactively contaminated areas remains relevant so far.

The objective is to assess the current demographic situation in the Bryansk region southwestern settlements, most affected by the Chernobyl NPP accident, as well as to justify the shortage of social infrastructure required to ensure the settlements return back to normal conditions.

Methods. The study analyses current social problems, including demographics and infrastructure in the five southwestern districts of the Bryansk region, most affected by the Chernobyl NPP accident.

Results and discussion. In 2023, the southwestern districts of the Bryansk region included 72 residential settlements (71 rural and the town of Novozybkov) with an average annual effective radiation dose of population exposure above 1 mSv. The total registered population of the settlements is 63,869 people. The share of rural and urban population is 39 and 61 %, respectively. A difficult demographic situation was noted in the populated areas of the Chernobyl accident zone. Thus, the share of persons under working age (0–15 years) does not exceed 17 % of the total population. Social infrastructure demands were assessed to ensure wellbeing of the population in the Bryansk region districts, most affected by the Chernobyl NPP accident.

Conclusion. In the rural settlements where the population is exposed to an average annual effective radiation dose above 1 mS, assessment and audit of the existing social infrastructure is required with follow-up efforts to eliminate the shortages, if any, to comply with modern norms and standards.
Ammonium Removal and Recovery from Industrial Wastewater Using Distillation Method
Authors: Son Tran Van , Huong Giang Le , Duc Manh Lai , Manh Khai Nguyen
Published: November 2024

:Industrial wastewater contains high ammonium concentration, leading to difficulties in the treatment process using conventional methods. This study used the heat distillation method following the alkalization of wastewater to remove and recover ammonium from the wastewater of an industrial plant. The influent wastewater has a pH 6.41 and a very high ammonium concentration (28000 mgN/L). The distillation system was designed to consist of heating, cooling, and recovery units. After alkalinization, the wastewater sample was boiled using an electric stove, the ammonia vapor passed through the cooler and condensed into liquid ammonia, and was recovered. The controlling factors for the removal efficiency including solution pH (7-12) and distillation time (0.5, 10, 15, 30, 60 and 90 min) were investigated. Experimental results show that the optimal conditions for ammonium treatment from wastewater are at pH 12 and distillation time of 30 min, corresponding to 100% of removal efficiency. In terms of liquid ammonia recovery, the ice cooling mode was more efficient than the tap water cooling and vacuum evaporating modes. Final ammonia concentration reached 215 mgN/L that has potential for industrial production.
Application of Response Surface Methodology to Optimize Mononitrotoluen Aquatic Removal by Photo-fenton Process
Authors: Van Huong Nguyen , Son Tung Pham , Van Hoang Nguyen , Khanh Vy Vu , Mnh Tri Le , Manh Khai Nguyen
Published: November 2024

In this study, the effectiveness of pH (1-5), hydrogen peroxide concentration (5-10 mM), ion Fe2+ concentration (0,1-0,5 mM), and reaction time on treatment of mononitrotoluen by homogeneous Photo-Fenton process was evaluated. The response surface methodology (RSM) was applied to design the experiment and determine the optimal treatment. The results indicated, at optimized pH=3, C0MNT=100 mg/L, CFe2+= 0.4 mM, CH2O2= 2.5 mM, the MNT treatment efficiency reached 99.4% after 5 minutes.
Effects of Soil Properties on the Accumulation and Bioavailability of Copper in the Orange Growing Soil in Cao Phong, Hoa Binh
Authors: Thu Tran Thi Tuyet , Thi Khanh Ly Trieu , Thi Hue Nguyen
Published: November 2024

This study focuses on investigating the crucial influence of some soil properties on the adsorption capacity and fractions of Cu in the citrus-growing soil in Cao Phong district, Hoa Binh province. Batch experiments were conducted by adding 0, 100, 500, and 1000 mgCu/L to soil samples with different characteristics. In the 100 mgCu/L added experiment, we found the highest Cu adsorption rate (> 93.76%) in soil samples with loamy texture, high pHKCl, %OC, and low nutrients. Conversely, the lowest Cu adsorption rates (78.32-79.23%) were observed in soil samples with lower pH, and higher %OC and nutrient availability. Noting that the total adsorbed Cu has a negative correlation with the amount of Cu added to the soil, gradually decreasing from (78.32-95.67%) to (26.67-34.19%) and the lowest (22.48-28.56%) in soil samples with the added levels of 100, 500, and 1000 mgCu/L, respectively. In soil samples with total Cu > 200 mg/kg, pHKCl 4.79-5.32, and OC 1.34-2.06%, the bioavailable Cu ranged from 2.29-4.29 mg/kg, which is safe for the soil environment and ecosystem, and sufficient as a micronutrient for citrus plants. It is necessary to find the best solutions for managing Cu-polluted soils.
Efficiency of Optimized Fabrication Process for Light-absorbing Membranes from Sewage Sludge Applied in Solar-driven Steam Generation Systems
Authors: Linh Dang Thi Hai , Duc Binh Nguyen , Thi Hanh Nguyen , Thu Huyen Pham , Thi Nhat Minh Doan , Van Duong Dao
Published: November 2024

Solar-driven evaporation systems have been studied to provide clean water, especially for islandic areas. Carbon materials made from sludge in domestic wastewater treatment plants have been studied to produce light-absorbing membranes in solar-to-steam (STS) systems. However, the technical limitation of this method is that the water evaporation rate is still low. In this study, the process of manufacturing light-absorbing membranes was optimized to simplify the process while increasing the water evaporation rate and testing the application of converting seawater into fresh water. The optimal evaporation rate was 2.65 kg.m-2.h-1, higher than the system using vacuum drying membranes (1.88 kg.m-2.h-1) under 0.6 kW/m2 illumination conditions. When illuminated, the surface temperature of the TN_0.1 light-absorbing membrane reached 36.5°C, meaning 2.5°C higher than that of the reference membrane (without carbon material). The results of analyzing some anion and cation indicators in the harvested water showed that the fabricated STS systems could be applied well to convert seawater into fresh water for domestic use. Especially, the treatment efficiencies for , , ,  reach 99.87%, 94.35%, 99.5%, 99.98%, and 99.44%, respectively.
TAXA DE MORTALIDADE POR ANEMIAS EM DIFERENTES GRUPOS POPULACIONAIS NO BRASIL: ANÁLISE DE DISTRIBUIÇÃO GEOGRÁFICA
Authors: Ernesto Pedro Bruno Tavares , Ernesto Pedro Brenno Tavares , Reis Macedo Luis Fernando
Published: November 2024

Objetivo: Analisar a taxa de óbitos por anemias nos últimos cinco anos (2018 a 2022) no Brasil. Método: Trata-se de um estudo quantitativo do tipo descritivo com dados secundários do DATASUS realizado entre os meses de janeiro a fevereiro de 2024. Os dados foram extraídos por dois pesquisadores, de forma independentes, utilizando a mesma estratégia de busca no próprio site do Ministério da Saúde, buscando amenizar os potenciais riscos de perda de dados. Em seguida, foram apesentados em tabelas e gráficos. Resultados: Os resultados revelaram tendências de aumento nas taxas de mortalidade por anemias ao longo dos anos, com variações regionais notáveis. A região Sudeste destacou-se com o maior número de óbitos, especialmente em São Paulo. A análise demográfica indicou maior incidência em idosos, disparidades significativas por cor/raça, com brancos e pardos liderando em número de óbitos, e uma prevalência mais alta entre mulheres. Anemias falciformes foram as mais prevalentes, seguidas por anemias por deficiência de ferro. Conclusão: O estudo contribuiu para a compreensão da epidemiologia das anemias no Brasil, ressaltando a necessidade de estratégias específicas para cada região. A pesquisa destaca a importância da vigilância epidemiológica, redução de disparidades socioeconômicas e acesso equitativo à saúde.
SISTEMAS PRODUTIVOS LOCAIS DO APLLEITE: CARACTERÍSTICAS DO SEGMENTO DO PROCESSAMENTO DE LEITE E SUA INTERAÇÃO COM O MEIO AMBIENTE NO MUNICÍPIO DE ARIQUEMES
Authors: Souza Vaneide Gomes de , Sousa Mariluce Paes de
Published: November 2024

Esta pesquisa objetivou descrever as estratégias implementadas pelos agentes das agroindústrias APRODIL e APRUEST para a minimização da degradação do meio ambiente e as características do processo de produção do leite nas agroindústrias do município de Ariquemes, tendo em vista que os associados atuam na produção, processamento e distribuição do leite. A metodologia da RedeSist privilegia a investigação da relação entre conjuntos de empresas e destas com outros atores e a metodologia de North privilegia verifica a avaliação do posicionamento da empresa em relação à questão ambiental. As associações APRODIL e APRUEST estão organizadas de uma forma em que possam competir em relação à compra do leite cru no município de Ariquemes. Contudo elas carecem de maiores investimentos de infraestrutura física, máquinas e equipamentos para que realmente possam fazer frente a organizações globais.
Social Media and Cyber-Crime Among Abraka Residents, Delta State, Nigeria
Authors: Agbaka Joyce
Published: November 2024

Social media platforms have become a routine for many people. The number of active social media users have more than doubled within a couple of years resulting in current record of over one billion. The lack of control of social media have created room for vices, such as fraud, falsehood, sedition, blackmail, pornography, invasion of privacy, and other unacceptable practices. One of the greatest problems affecting social media is that it promotes superficial connection that can end up causing long term emotional and psychological problems. This study was undertaken to determine social media and cyber-crime among Abraka residents. A sample of three hundred (300) respondents were drawn from seven (7) different locations and zones in Abraka, using the simple random sampling technique. The descriptive survey research design was adopted and data was collected from the three hundred (300) questionnaires administered and in-depth interview conducted. Data from questionnaires were analysed using the Statistical Package for the Social Sciences (SPSS) version 21 in order to test the extent to which social media users are aware of the use of social media platforms in the perpetuation of cyber-crime. The results revealed that social media platforms such as Whatsapp, Facebook, Twitter, Youtube, Badoo, Instagram, BBM, etc have been used to perpetuate cyber-crime. On the basis of these findings, the study concluded that social media-aided cyber-crimes have significant effect on its users and that social media, with its positive impact, have brought serious threats to the society. Based on the findings, the study recommends the use of password codes among social media users in order to restrict leakage of vital/relevant information on the internet from social media users to fraudsters.
Shock-Induced Fan Cowl Separation During Aeroengine Windmilling at Diversion from Cruise
Authors: Sabnis Kshitij , Babinsky Holger , Boscagli Luca , MacManus David , Sheaf Christopher
Published: November 2024

When a civil aircraft engine is operated at windmill during the cruise flight phase, there is supersonic flow acceleration around the leading edge of the fan cowl toward the external surface. The terminating normal shock wave can separate the turbulent boundary layer developing on this external surface. A series of experiments at a flight-relevant Reynolds number (1.2 million based on lip thickness) are performed in a quasi-two-dimensional wind tunnel rig to investigate the underlying flow physics. At a nominal inflow Mach number of 0.65 and a nacelle incidence angle of 4.5 deg, as the equivalent engine mass-flow rate is reduced, an increase in shock strength results in flow separation when the shock exceeds Mach 1.4. Over a 10% range in the notional engine mass-flow rate, the boundary layer developing on the external fan cowl thickens by a factor of three on the onset of separation. A reduction in the incoming Mach number from 0.65 to 0.60 weakens the shock wave and thus delays separation. An increase in surface roughness has no significant effect in situations where the boundary layer remains attached. However, for separated cases, an increased local roughness height causes a greater separation extent and a thicker boundary layer downstream of the shock wave.
Assistência de enfermagem ao paciente com acidente vascular cerebral
Authors: Alves Fernanda Cristina Rosa , Antunes Heloana Monteiro , Barros Micheli Mayara Souza , Ferreira Gustavo Corrêa , Moreira Neila Maria Ewerton , Santos Rayane de Freitas , Reis Carlos Eduardo Rocha , Siqueira Yuri Oliveira , Carvalho George Pinheiro , Medeiros Lucia Menezes de
Published: November 2024

Objetivo: Descrever a assistência de enfermagem prestada ao paciente vítima de Acidente Vascular Cerebral (AVC) durante o atendimento de emergência. Métodos: Trata-se de um estudo descritivo, qualitativo, do tipo revisão integrativa, realizado através de buscas nas bases de dados: Bases de Dados de Enfermagem, Medical Literature Analysis and Retrievel System Online e Scopus. Foram identificados 468 estudos e após o processo de triagem e elegibilidade, restaram 14 artigos a serem incluídos nesta revisão. Resultados: Foi observado o modo como é realizado o manejo do paciente vítima de AVC no contexto da urgência e emergência, sendo utilizados protocolos previstos nas instituições. Além disso, foi possível perceber as dificuldades do profissional graduado em enfermagem acerca da prestação da assistência. Considerações finais: Considera-se que, a assistência de enfermagem ao paciente vítima ou com suspeita de AVC impacta o prognóstico do doente, visto que o enfermeiro possui diversas atribuições que tem o potencial de contribuir para a sobrevida do paciente nos diferentes níveis de atuação.
A NEW CONJUGATE GRADIENT METHOD BASED ON LOGISTIC MAPPING FOR UNCONSTRAINED OPTIMIZATION AND ITS APPLICATION IN REGRESSION ANALYSIS
Authors: Hamad Sarwar Ahmad , Omar Dlovan Haji , Sulaiman Diman Abdulqader , Ibrahim Alaa Luqman
Published: November 2024

The study tackles the critical need for efficient optimization techniques in unconstrained optimization problems, where conventional techniques often suffer from slow and inefficient convergence. There is still a need for algorithms that strike a balance between computational efficiency and robustness, despite advancements in gradient-based techniques. This work introduces a novel conjugate gradient algorithm based on the logistic mapping formula. As part of the methodology, descent conditions are established, and the suggested algorithm's global convergence properties are thoroughly examined. Comprehensive numerical experiments are used for empirical validation, and the new algorithm is compared to the Polak-Ribière-Polyak (PRP) algorithm. The suggested approach performs better than the PR algorithm, according to the results, and is more efficient since it needs fewer function evaluations and iterations to reach convergence. Furthermore, the usefulness of the suggested approach is demonstrated by its actual use in regression analysis, notably in the modelling of population estimates for the Kurdistan Region of Iraq. In contrast to conventional least squares techniques, the method maintains low relative error rates while producing accurate predictions. All things considered, this study presents the novel conjugate gradient algorithm as an effective tool for handling challenging optimisation problems in both theoretical and real-world contexts.
Study of liver function test and Vitronectin as biomarker for liver cell in Iraqi chronic myeloid leukemia (CML) patients with nucleophosmin 1(NPM) mutation
Authors: Abdullah Shaymaa Obaid , Kadhim Wurood Alwan , Al-Musawi Hawraa Sabah , Haider Ghania , Ketran Rana Mozher , Sahi Marwah Mohammed
Published: November 2024

A cancer cell's behavior is determined by changes at the DNA level, according to the research on leukemia disease that is now available, particularly the molecular and clinical investigations. The current study was designed to evaluate the level of some liver biomarkers serum transaminase AST and ALT along with level of Vitronectin (VTN) as marker for hepatocyte damage in Iraqi chronic myeloid leukemia (CML) patients. The effect of a nucleophosmin 1(NPM) mutation in the level of these markers was compared with CML patients who did not have this mutation. The study included 60 patients with CML (17 male and 43 female). The data of current study recorded mutation in about 30% among the studied samples. The results of the statistical analysis of the number of blood cells showed a highly significant increase in blood cells (RBC, WBC and platelets) and damage to the liver tissue. It was evident through the level AST and VTN level which increased significantly at p≤0.05. On the other hand, the data showed significant differences between those with mutation and without regarding VTN. There were non-significant differences between those with mutation and without regarding to AST and ALT at p-value ≤ 0.05. The study proved an effect of CML on the vital liver functions and it also proved that a mutation (NPM-1) in the nucleofosmin protein reduced the negative effect of the disease on the functional activity of the liver.
Studying the effects of algae, fungi, and plant aqueous extracts against Tribolium castaneum
Authors: Albayyar Azeddin A. , Hamad Anas Abdullah , Salih Thaer Abdulqader , Ali Loay H. , Abdulhadi Haitham L.
Published: November 2024

The impact of the compounds extracted using the aqueous extract approach from Terfezia arenaria, Chara vulgaris and Capsicum annuum was investigated in relation to the larval stage of the economically significant insect Tripolium castneum. The cumulative and non-cumulative killing percentages for these extracts were established in the present investigation. The findings demonstrated the superior performance of the compound derived from the fungus Terfezia arenaria with a mortality rate of 36% at a concentration of 4000 ppm over other extracts whether the effect is cumulative or non-cumulative. Both of the tested extracts from the Chara vulgaris and Capsicum annuum plants had mortality levels of 28% and 25% respectively at a concentration of 4000 ppm. The results of this study also revealed phenotypic deformities in the larval stage of these insects, with the first larval stage of all treatments being the most affected and the fourth larval stage of Tripolium castneum being the least affected.
The Role of CD279 and CD274 Gene Polymorphisms in Iraqi Patients with Multiple Sclerosis by using Real-time qPCR HRM Technique
Authors: Alwash Zena Faris , Hassain Ahmed Sadoon , Mohammed Maryam Qasim , Al-Saedi Mohanad Kareem Aneed , AL-Tameemi Ahlam Khaleefah Abdal
Published: November 2024

Multiple sclerosis continues to be a major cause of neurological dysfunction, especially in young adults, due to the disease's extremely varied course and the development of persistent impairment in many patients. According to previous studies the PD-1 (CD279) and PD-L1 (CD274) genes play a crucial role in autoimmune diseases, so the genetic variations in these genes may be one of the factors affecting the occurrence of autoimmune diseases. Therefore, the current study aimed to determine the role of some genetic variations of PD-1 and PD-L1 in Iraqi MS patients. The number of samples for the current case-control study was 120. Blood samples were collected for the period November 2021 to February 2022 from the Medical City Hospital in Baghdad, DNA was extracted and the High-resolution melting (HRM) technique was used to determine the genetic variation. The genotype of CD279 (rs2227982) located in the 2KB upstream variant of the gene revealed that the heterozygous genotype and the mutant genotype were linked to an increased susceptibility to the disease whereas the T allele of CD274 SNP (rs1411262) and the mutant genotype (TT) were risk factors that increased the chance of susceptibility to the disease with a probability of predicting its occurrence. In conclusion, polymorphisms of both CD279 and CD274 genes were associated with increased risk and may act as predicting factors for MS in the Iraqi population.
Virulence factors associated with hyper virulent Klebsiella pneumoniae isolated from Different Clinical Sources
Authors: Hasib Fatimah Artn , Abdullah Iman Tajer , Mohammad Farooq Ibrahim
Published: November 2024

Klebsiella pneumonia is an opportunity pathogen causing several diseases including sepsis, pneumonia and wound infections. There are two pathotypes of Klebsiella pneumonia: classical K. pneumoniae (cKp) and hypervirulent K. pneumonia (hvkp). In this study, we attempted to discover the extent occurrence of hypervirulent K. pneumoniae strains among patients in Kirkuk city and their virulence factors. A total of 150 samples were collected from different hospitals in Kirkuk city (Kirkuk General Hospital, Azadi Teaching Hospital, Gynecological and Pediatric (Al-Nasr) Hospital and Children Hospital) during the period between November 2021 to June 2022. The age of patients ranged between 20- 60 years with both sexes. The results showed that 23.33% of K. pneumoniae isolates were positive for string test. Similar results were obtained by using sedimentation assay. The capsule of hvKp is a key virulence factor aiding in the bacterial dissemination and infection. For this reason, in current study, the capsular polysaccharide (CPS) was extracted and quantified. The results showed excessive production of capsular polysaccharide as seen in Klebsiella isolates 16,22,23,24,25,26,28 with an amount 49,41,50,74,49,49,73 μg/ml of CPS respectively. Siderophore production was also examined by using M9 minimal salts media. The results revealed that all K. pneumoniae isolates (100%) were able to produce siderophore. In addition, resistance to tellurite was also identified by using tellurite containing selective media and the results showed that 50% of isolates were resistant to tellurite and the remaining 50% were susceptible. A molecular study using conventional PCR revealed that 21 out of 30 isolates (70%) harbored the rmpA gene while the remaining 9 isolates (30%) lacked this gene. The presence of the iucA virulence gene was also detected and found to be present in all the isolates. Additionally, our findings indicated that 7 out of the 30 isolates (23%) were classified as hvkp.
Influence of some Alu insertion sequences (insertion/deletion) variations in families discrimination
Authors: Al-Mamoori Ali Shakir Obeed , Al-Terehi Mona N.
Published: November 2024

The current study focused on the use of Alu elements in determining identity among individuals and they were effective for determining identity, Sixty blood samples were collected, from 14 families in Babylon Governorate to study the identification of people based on the Alu elements, where 4 sites were identified, (2q21.1), (8q23.1), (13q34) and (15q23). A PCR device was used to amplify the required sites. Polyacrylamide migration technique used to separate bands and the results are represented by additions and deletions elements. In site A(2q21.1), the P-value was between (0.04-0.22), the PIC value ranged 0-0.444 and Chi-square (3-8). In site B(8q23.1), the P-value ranged (0.018-0.48) the PIC value (0-0.5) and the Chi-square (1.44-6). In the C(13q34) site, the P-value was (0.049-0.941) PIC value was (0.486-0.5) and Chi-square (1.44-6). In the site D(15q23), the P-value was (0.049-0.941). The PIC value was (0-0.5) and Chi-square (0.04-4) at the site. The observed, expected and allele frequencies percentages were calculated for site A(2q21.1). The addition was (0.75) and deletion was (0.25). Additions and deletions were: site B(8q23.1) (0.375), (0.625). C (13q34) (0.5), (0.5). D (15q23) (0.775), (0.225) respectively and the PIC value ranged 0.5 - 0.37, P-value 0- 0.953 and Chi-square 60-0.08 for all sites and for all samples. Finally, the similarity between individuals (60) ranged between 0-1.
Association of colon adenocarcinoma with SNPs variation of 3-untransulated region of Interlukin-23 Receptor
Authors: Alwaidh Roaa Hammed , Hashim Ali Fadhil , Al-Terehi Mona N. , Mahdi Liwaa Hussein
Published: November 2024

Colorectal cancer is most common cancer type recorded in high incidence in last decade in Iraq. Many factor have implicated in disease progressing and development, some un translated regions implicated indirectly with disease. The current study aims to detect the UTR of IL-23 receptor variations with some adenocarcinoma histological features. A case control study was implemented using PCR-sequencing of UTR of IL-23 receptor gene. Three SNPs were targeting in current study including (rs185937924 A>G, rs1653126126G>C and rs1300405558 T>A). The results showed deletion mutation observed in these SNPs, there were non-significant increases in deletion mutation in patients than control group (P=0.0983). The first SNP rs185937924 A>G shows non-significant association with adenocarcinoma (P= 0.247) for AA genotype and for AG and GG genotypes (P= 0.7353). A new allele was recorded in current study for rs1653126126 (G>A), non-significantly associated with disease in all genotyping for AG (P=0.3588). For AA (P=0.4049), a new allele also was observed in rs1300405558 (T>G), the genotyping showed non-significant association with disease TG (P=0.5554), TT (P=0.5288) and GG (P=0.5552). The target SNPs genotyping did not associate with well or moderate differentiation, target SNPs did not show significant relations with tumor staging and T. It can be concluded that the IL-23 receptor variation in adenocarcinoma has a new allele in study population (case and control) in the rs1653126126G>C (G>A) and rs1300405558 TA (TG). The new alleles did not associate with adenocarcinoma and with the histological features.
A transzkatéteres aortabillentyűbeültetés bővülő indikációs köre és az aortabillentyű-stenosis hosszú távú kezelésének stratégiai szempontjai
Authors: Gulyás Zalán , Kerecsen Gábor , Tóth-Zsámboki Emese , Horváth Zsófia , Kiss Róbert Gábor , Duray Gábor Zoltán
Published: November 2024

A transzkatéteres aortabillentyű-implantáció (TAVI) az elmúlt két évtizedben egyre erősebb evidenciákkal rendelkező terápiás lehetősége lett a degeneratív súlyos aortabillentyű-stenosis kezelésének. Az indikációs kör függetlenné vált a szívsebészeti beavatkozás kockázatától, és egyre inkább a várható életkilátásokhoz igazodik. Az aktuális irányelvek a TAVI és a szívsebészeti aortabillentyű-csere (SAVR) egyértelmű javaslatai mellett hagynak „szürke zónákat” is, amelyek lehetőséget teremtenek a két beavatkozás előnyeinek és hátrányainak, valamint a beteg érdekeinek és a helyi viszonyoknak a figyelembevételével az optimális döntés meghozatalára. Minél fiatalabb betegcsoportra terjesztjük ki a TAVI-t, annál inkább figyelembe kell venni azokat a tényezőket és hosszú távú hatásokat, amelyek ezzel az intervenciótípussal együtt járnak. Az intraventrikuláris vezetési zavarok, a pacemakerimplantáció, a paravalvuláris leak mellett fontos kérdés a billentyű élettartama, valamint a TAVI utáni perkután koronáriaintervenciók és az esetleges aortabillentyű-reintervenciók elvégezhetősége. Az első intervenció – akár TAVI, akár SAVR – kiválasztása kulcsfontosságú, ugyanis meghatározhatja a beteg életminőségét, a billentyű élettartamát, valamint a későbbi, ismételt invazív beavatkozások lehetőségét.