bluuebunny/crossref_metadata_2025_split huggingface dataset:
SIMBIOSIS ENTRE HONGOS MICORRÍZICOS ARBUSCULARES YPHASEOLUS VULGARIS BAJO CONDICIONES DEMICROGRAVEDAD SIMULADA: EVALUACIÓN PRELIMINAR
Authors: Gálvez Bailey María Nicole , Velez Giraldo Sara Nicole , Monzón Cosillo Andrea Gabriela , Bianchi Veliz Florence , López De León Juan De Dios , Ubico Ligorria Pietro Ernesto , Lupo Patrizia 
Published: December 2024

El objetivo de este estudio fue evaluar el efecto de la microgravedad simulada en la simbiosis entre Phaseolus vulgaris y hongos micorrízicos arbusculares, enfocándose en el crecimiento vegetal, la colonización radicular y el contenido proteico. La relevancia de este estudio radica en comprender cómo las plantas podrían adaptarse a entornos espaciales, lo cual es esencial para el desarrollo de sistemas agrícolas sostenibles en misiones de larga duración. Las plantas fueron cultivadas por 27 días bajo condiciones de microgravedad simulada utilizando un clinostato 2D y gravedad terrestre, con y sin inoculación de hongos micorrízicos. A través de un análisis microscópico, se observó un aumento en la colonización micorrízica en condiciones de microgravedad simulada, con una mayor presencia de hifas y vesículas; lo que indicó un incremento en la actividad simbiótica. Asimismo, mediante el método de Bradford, se registró una disminución significativa en la concentración proteica de las raíces bajo microgravedad, posiblemente como una adaptación metabólica frente al estrés. Aunque no se observaron diferencias significativas en la longitud radicular entre los tratamientos, se identificó una tendencia a un menor crecimiento en condiciones de microgravedad, probablemente vinculada a alteraciones hormonales. Estos resultados destacan el potencial de optimizar la simbiosis micorrízica en condiciones de microgravedad simulada para mejorar el crecimiento de cultivos en diversos entornos, con aplicaciones tanto en la agricultura terrestre como espacial; lo que constituye el primer análisis de esta simbiosis en microgravedad simulada en Centroamérica.
Assessment of Refuse Dumpsite Impact on Groundwater Quality: A Case Study from Awotan, Ibadan, Oyo State, Nigeria
Authors: Lawal Ibrahim Adetayo , Achi Chibueze Godwin , Coker Akinwale Oladotun 
Published: December 2024

Groundwater, an essential freshwater resource, is critical to life and supports various industries. Unrestrained urban expansion and inefficient waste management practices endanger groundwater quality. This research examines the groundwater quality and impacts of the Refuse Waste Dumpsite located at Awotan, Ibadan. Additionally, this study provides a framework for assessing dumpsite impacts on groundwater, which can be applied to similar urban contexts worldwide, contributing to global efforts to ensure safe water quality. Samples of residential Well water near the dumpsite were collected to determine their physical, chemical, and bacteriological characteristics. The physical and chemical parameters investigated include Temperature, pH, Electrical conductivity, Nitrate, and Chloride, which were determined using the standard analytical methods. In contrast, bacteriological parameters such as Total Coliform and E.Coli Count were determined. Trace metals such as Pb and Fe were also determined to ascertain the relationship between pollutant levels and distances from the dumpsite and to evaluate compliance with WHO and NSDWQ water quality standards. Regression analysis revealed a strong correlation (R = 0.999, R² = 0.998) between dumpsite distance and chemical water quality, but the results were not statistically significant (p = 0.066). Chemical parameters like alkalinity (p = 0.484) and nitrate (p = 0.338) showed no significant impact from distance. For bacteriological quality, the model was statistically significant (p = 0.009) with an R² of 0.994. Total coliform (p = 0.055) was nearly significant, indicating potential distance-related bacterial contamination. The findings underscore the pressing need for sustainable waste management to safeguard groundwater resources.
ISAAC ASIMOV: TRAÇOS BIOGRÁFICOS E CONTRIBUIÇÕES À EDUCAÇÃO MATEMATICA
Authors: Farias Karen Leonildes Macias de , Noronha Kauanny Margalho , Chaquiam Miguel 
Published: December 2024

A partir de pesquisas envolvendo história da matemática e seu uso em sala de aula, principalmente no que tange o uso de livros e biografias, emerge o escritor e químico Isaac Azimov. Embora sua obra abraja diversos campos da ciência e da tecnologia, os livros que aboradam matemática e sua história despontam no olhar de licenciandos em Matemática. A partir do conhecimento dessas obras, questionou-se: Que obras de Isaac Azimov abordam conteúdos matemáticos ou história da matemática e sua relação com a Educação Matemática? Para obter elementos e argumentos que respondam a esse questionamento e balizar a pesquisa foi estabelecido como objetivo geral: Apresentar obras de Isaac Azimov que retratem conteúdos matemáticos ou história da matemática e sua relação com a Educação Matemática. Observado que a pesquisa desenvolvida está enquadrada quanto à natureza como aplicada, quanto à abordagem, qualitativa. Em relação aos objetivos, apresenta-se como exploratória e, em relação aos procedimentos, bibliográfica. O marco inicial dos caminhos percorridos se dá pela busca e leitura da obra de Isaac Azimov, com vistas a identificação daquelas que enfatizam a matemática e seu ensino, principalmente as que envolvem a história da matemática e possibilidades dentro da Educaçao Matemática. Dentre os resultados alcançados, observa-se que as obras de Isaac Azimov são uma inspiração para aqueles que desejam enveredar pelo mundo dos escritores, nos apresentam formas de abordagem em diversos ramos da ciência, principalmente no que tange conteúdos históricos, como ocorre com a história da matemática e sua relação com os objetos matemáticos.
The pixelverse: ethical, philosophical, and combinatorial explorations of infinite image generation
Authors: Lima Vitor Manuel Parreira Figueiredo , Gaspar Fernando António da Costa 
Published: December 2024

The Pixelverse represents a concept at the intersection of combinatorics, technology, and philosophy—a digital universe where every conceivable image can be generated by exhausting all possible pixel combinations on a screen. Rooted in the combinatorial theory similar to the Infinite Monkey Theorem, the Pixelverse theoretically contains every visual instance that ever existed or could exist. This includes images of all past, present, and future events, created not by conscious design but by the exhaustive application of mathematical principles to visual data. The concept challenges traditional understandings of creativity, suggesting that even randomness has the potential to replicate reality. However, the implications of the Pixelverse extend beyond the theoretical. Ethical considerations become critical when considering privacy, ownership, and the impact of predictive imagery. Studies like those of Bansal et al. (2022) on ethical language interventions in text-to-image models highlight the inherent biases that such generative systems carry, reflecting the complexities of responsibly managing the power of infinite content generation. Similarly, Yazdani et al. (2024) provide a comprehensive overview of the challenges of copyright and originality when dealing with AI-generated content . Philosophically, the Pixelverse raises questions about determinism, the role of the observer, and the nature of creativity. If every image is a product of pixel combinations and random chance, does the meaning arise only when a human observer assigns it? Tilford (2023) examines how AI-generated content mimics human creativity, challenging long-standing ideas of artistic originality and subjective expression . As we navigate this expansive, pixel-based cosmos, questions about our own role as creators, observers, and ethical stewards come to the forefront, reminding us that even the infinite requires human context to hold meaning.
SISTEMA DE AQUAPONIA COMO ALTERNATIVA SUSTENTÁVEL: IMPACTO NA PRODUÇÃO DE PEIXES E PLANTAS FOLHOSAS
Authors: Nivaldo André Luiz Peixoto , Vieira Elis Regina de Queiroz , Ferreira Marcos Antônio , Queiroz Adriano Sérgio Bernardo 
Published: December 2024

A aquaponia é um sistema de produção sustentável que integra a criação de peixes e o cultivo de plantas sem o uso de solo em ambiente de ciclo fechado. Objetivou-se avaliar o crescimento de duas espécies de peixe, a Tilápia (Oreochromis niloticus) e a Tambatinga (Colossoma macropomum), em consórcio com o desenvolvimento de duas espécies de plantas, a Cebolinha (Allium schoenoprasum) e a Alface (Lactuca sativa var. crispa), em sistema de aquaponia. O experimento foi realizado na Universidade Estadual do Tocantins (UNITINS), Campus Paraíso do Tocantins. Foi implantado o sistema NFT (Técnica de fluxo de nutrientes), no qual o tanque de piscicultura, contendo 15 tilápias e 15 tambatingas, foi interligado a um sistema de hidroponia com fluxo laminar de água em canaletas de PVC, sendo 21 plantas de cada variedade. Foi realizado nas plantas as medidas de altura (cm) e número de folhas. Nos peixes foram mensurados o comprimento total (cm) e o peso (g). O pH da água e a temperatura foram monitorados. Foi utilizado o delineamento inteiramente casualizado. Foi observada diferença significativa (p<0,05) entre as variedades de peixe e as cultivares de plantas para os parâmetros avaliados. A variedades das tilápias apresentaram, ao final do experimento, maiores valores de peso (168,47) e comprimento (20,43) em comparação as tambatingas (peso 130,27g; 17,03 cm comprimento). Ao final do período experimento, a alface alcançou uma média de 11 folhas e 14,52cm de altura, enquanto a cebolinha 21 folhas e 27,43cm de altura. A aquaponia apresenta um impacto positivo para o meio ambiente e a produção de alimentos, sendo uma alternativa sustentável e inovadora, com ganhos significantes na produção de alimentos conforme resultados analisados.
CULTURA DIGITAL: MULTILETRAMENTOS DIGITAIS NAS AULAS DE LÍNGUA(S) SABERES E DIÁLOGOS
Authors: Silva Ezilda Maciel , Ribeiro Daciléia Marinho 
Published: December 2024

This article aims to discuss the importance of digital multiliteracies and multimodalities for the teaching-learning of language(s), as well as to discuss the relevance of this theme to think about new ways of teaching and learning, since with the insertion of digital information and communication technologies (DICTs) in training environments, it has transformed the way students learn. In view of this, reflecting on how these changes have impacted teaching-learning is necessary, given that learners arrive at school environments frequently using digital technology. As a theoretical contribution, we dialogued with authors such as Rojo and Barbosa (2015); Kalantzis, Cope and Pinheiro (2020); Fofonca (2011), among others, which gave epistemological support to the research. As a methodology, bibliographic research was adopted to deepen the mentioned theme, which corroborated with our conclusions of the indispensable that it is to work on digital multiliteracies and multimodalities in times of globalization, and to emphasize the importance of this theme, we proposed the work with the digital genre, emerging from TDICs, booktubes in Spanish classes, in this way we were able to emphasize the importance of working with multimodal texts in foreign language classes (LE), and how these reconfigured the conception of texts, which now circulate in cyberspace, requiring users to have knowledge in multiple languages and multisemiosis, which requires knowledge and skills for interaction with this new textual modality, the genesis of technology and its transformations. The use of booktubes proved to be pertinent for the meaningful construction of knowledge, as it is dynamic and involves students in active and attitudinal learning, taking them out of passivity.
EXPERIMENTAL STUDY OF RANDOM WALKS OF VORTEX LASER BEAMS PROPAGATING IN A TURBULENT ATMOSPHERE
Authors: Махманазаров Р.М. , Кусков В.В. , Банах В.А. , Герасимова Л.О. , Фалиц А.В. , Воробьёв Ю.А. 
Published: December 2024

Проведены эксперименты по распространению вихревых лазерных пучков на атмосферной трассе длиной 500 метров. Рассмотрено уширение лазерного пучка в конце трассы распространения в зависимости от величины топологического заряда. Показано, что случайные блуждания вихревых оптических пучков не зависят от величины топологического заряда, а определяются их начальными пространственными размерами и величиной структурной характеристики показателя преломления.
Experiments on the propagation of vortex laser beams on an atmospheric path 500 meters long have been carried out. The broadening of the laser beam at the end of the propagation path is considered depending on the magnitude of the topological charge. It is shown that the random walks of vortex optical beams do not depend on the magnitude of the topological charge, but are determined by their initial spatial dimensions and the magnitude of the structural characteristic of the refractive index.
A MODEL EXPERIMENT TO DETERMINE THE INTENSITY OF HEAT RELEASE OVER A COMBUSTION SOURCE
Authors: Герасимова Л.О. , Рейно В.В. , Агафонцев М.В. 
Published: December 2024

Проведены исследования интенсивности тепловыделения над очагом горения методом скоростной инфракрасной термографии. Рассчитаны интенсивность теплового излучения на разных расстояниях над очагом горения, удельная массовая скорость выгорания растительного горючего и доля теплоты, рассеянной в окружающую сред. Доля рассеянной теплоты уменьшается с увеличением расстояния над очагом горения, и не превышает 25 % от общего объёма выделившего количества теплоты.
Studies of the intensity of heat release over the combustion hearth by high-speed infrared thermography have been carried out. Gorenje The intensity of thermal radiation at different distances above the combustion site, the specific mass rate of combustion of vegetable fuel and the proportion of heat dissipated into the environment are calculated. Gorenje The proportion of dissipated heat decreases with increasing distance above the combustion hearth, and does not exceed 25% of the total amount of heat released.
ANALYSIS OF THE PARAMETERS OF 5 WATER VAPOR LINES IN THE TERAHERTZ RANGE
Authors: Щербаков А.П. , Чеснокова Т.Ю. , Воронин Б.А. 
Published: December 2024

Проведена обработка спектра водяного пара в терагерцовом диапазоне. Целью настоящей работы являются получение параметров 5 линий поглощения, относящихся к чисто вращательным переходам, являются. Это линии с частотами 18.49, 24.98, 32.85, 36.55 и 37.06 см-1. Данные линии соответствуют переходам между уровнями с вращательными квантовыми числами J=0, 1, 2 и 3. Проведено сравнение с данными из БД HITRAN2020.
The water vapor spectrum was processed in the terahertz range. The purpose of this work is to obtain the parameters of 5 absorption lines related to purely rotational transitions, which are. These are lines with frequencies of 18.49, 24.98, 32.85, 36.55 and 37.06 cm-1. These lines correspond to transitions between levels with rotational quantum numbers J=0, 1, 2 and 3. A comparison with data from the HITRAN2020 database was carried out.
THE EFFECT OF ANISOTROPIC INHOMOGENEITIES OF THE IONOSPHERE ON THE STATISTICAL CHARACTERISTICS OF THE EIKONAL OF NORMAL WAVES REFLECTED FROM MODEL PLASMA LAYERS
Authors: Приходько Л.И. , Широков И.А. 
Published: December 2024

Рассмотрены пространственные корреляционные свойства эйконалов (фазовых путей) нормальных волн, отраженных от магнитоактивной плоскослоистой ионосферы с анизотропными случайными неоднородностями электронной концентрации. Получены аналитические выражения для дисперсий и функций автокорреляции этих характеристик сигнала для двух моделей регулярного ионосферного слоя: линейной и параболической. Результаты численно проанализированы для различных условий ионосферного зондирования.
The spatial correlation properties of the eikonals (phase paths) of normal waves reflected from a magnetically active plane-layered ionosphere with anisotropic random inhomogeneities of electron concentration are considered. Analytical expressions are obtained for the variances and autocorrelation functions of these signal characteristics for two models of the regular ionospheric layer: linear and parabolic. The results are numerically analyzed for various ionospheric sounding conditions.
ESTIMATION OF THE INTENSITY OF LASER RADIATION AT A REMOTE RECEIVER IN THE PHASE COUPLING SCHEME WITH AN ARTIFICIAL REFERENCE SOURCE
Authors: Немцева А.В. , Богачев В.А. , Стариков Ф.А. 
Published: December 2024

Представлены результаты численных расчетов интенсивности лазерного излучения, сфокусированного через турбулентную атмосферу на удаленный приемник в схеме фазового сопряжения исходящего лазерного пучка с опорным пучком. В качестве опорного рассматривался источник излучения, искусственно созданный в атмосфере – лазерная опорная звезда (ЛОЗ). Расчеты проводились в рамках квазиоптической расчетной модели распространения излучения по протяженной трассе с учетом турбулентности в виде набора фазовых экранов. Цель работы состояла в поиске способов численных оценок осевой интенсивности лазерного излучения на приемнике в условиях неидеальной адаптивной фазовой коррекции как лазерного, так и опорного пучков. Оценки предложено осуществлять с использованием метода, разработанного для схемы с идеальным опорным источником, который был адаптирован для рассматриваемой схемы путем введения дополнительного множителя, значение которого зависит как от параметров ЛОЗ, так и от уровня коррекции лазерного и опорного излучения. Предлагаемый способ может быть реализован на практике.
The results of numerical calculations of the intensity of laser radiation focused through a turbulent atmosphere on a remote receiver in a phase coupling scheme of an outgoing laser beam with a reference beam are presented. A radiation source artificially created in the atmosphere, a laser reference star (LRS), was considered as a reference. The calculations were carried out within the framework of a quasi-optical computational model of radiation propagation along an extended route, taking into account turbulence in the form of a set of phase screens. The aim of the work was to find ways to numerically estimate the axial intensity of laser radiation at the receiver under conditions of non-ideal adaptive phase correction of both laser and reference beams. The estimates are proposed to be carried out using a method developed for a scheme with an ideal reference source, which was adapted for the scheme under consideration by introducing an additional multiplier, the value of which depends both on the parameters of LRS and on the level of correction of laser and reference radiation. The proposed method can be implemented in practice.
STATISTICAL MODELING OF THE LASER NAVIGATION SYSTEM SIGNAL TAKING INTO ACCOUNT POLARIZATION
Authors: Каблукова Е.Г. , Ошлаков В.Г. , Пригарин С.М. 
Published: December 2024

Разработаны алгоритмы метода Монте-Карло численного моделирования поляризованного сигнала лазерной навигационной системы, предназначенной для безопасной посадки воздушных судов. Исследуются угловые распределения интенсивности поляризованного излучения, регистрируемого приёмником, а также анализируется влияние рассеяния различной кратности на регистрируемый сигнал. Разработанные алгоритмы и программы позволяют оценить эффективность и оптимизировать работу лазерной навигационной системы в различных условиях.
Algorithms of the Monte Carlo method for numerical simulation of the polarized signal of a laser navigation system designed for safe landing of aircraft have been developed. The angular intensity distributions of the polarized radiation detected by the receiver are investigated, and the effect of scattering of various multiplicities on the recorded signal is analyzed. The developed algorithms and programs make it possible to evaluate the effectiveness and optimize the operation of the laser navigation system in various conditions.
ATMOSPHERIC CORRECTION OF MODIS SATELLITE IMAGES, TAKING INTO ACCOUNT THE HETEROGENEITY OF THE REFLECTION OF THE EARTH'S SURFACE AND THE HEIGHT DIFFERENCE
Authors: Тарасенков М.В. , Белов В.В. , Энгель М.В. 
Published: December 2024

Рассматривается алгоритм восстановления коэффициентов отражения земной поверхности по спутниковым данным, в котором учитывается влияние её неоднородности и перепада высот при формировании бокового подсвета и освещенности земной поверхности. На примере спутникового снимка MODIS участка в восточной Сибири оценивается отличие результатов расчетов при учете и не учёте влияния перепада высот.
An algorithm for reconstructing the reflection coefficients of the Earth's surface from satellite data is considered, which takes into account the influence of its heterogeneity and elevation difference in the formation of side illumination and illumination of the earth's surface. Using the example of the MODIS satellite image of a site in eastern Siberia, the difference between the calculation results when taking into account and not taking into account the influence of the height difference is estimated.
MODELING OF DYNAMIC COMPENSATION OF THE EFFECT OF NON-KOLMOGOROV TURBULENCE ON LASER RADIATION
Authors: Богачев В.А. , Волков М.В. , Стариков Ф.А. , Шнягин Р.А. 
Published: December 2024

C помощью быстродействующего датчика волнового фронта (ДВФ) Шака-Гартмана в условиях павильонной турбулентности экспериментально с частотой 4 кГц зарегистрирована серия фазовых фронтов лазерного излучения. Анализ динамики восстановленного волнового фронта лазерного излучения выявил отличие пространственной и временной (предполагая выполнение гипотезы Тейлора) статистики от колмогоровского закона – временной и пространственный спектр локальной фазы лазерного пучка спадают с частотой по более медленному степенному закону. Расчётно показано, что в случае неколмогоровского временного спектра флуктуаций фазы фазовая коррекция высокоэффективна, когда частота работы адаптивной оптической системы более чем на порядок превышает ширину полосы частот турбулентности.
A series of phase fronts of laser radiation was experimentally recorded with a frequency of 4 kHz using a high-speed Shack-Hartmann wavefront sensor (WFS) in conditions of pavilion turbulence. Analysis of the dynamics of the reconstructed laser wavefront revealed the difference between spatial and temporal (assuming the Taylor hypothesis is fulfilled) statistics from Kolmogorov's law – the temporal and spatial spectrum of the local phase of the laser beam decreases with frequency according to a slower power law. It is shown computationally that in the case of a non-Kolmogorov time spectrum of phase fluctuations, phase correction is highly effective when the frequency of operation of the adaptive optical system exceeds the bandwidth of turbulence by more than an order of magnitude.