bluuebunny/crossref_metadata_2025 huggingface dataset:
СПУТНИКОВЫЙ МОНИТОРИНГ МЕЗОМАСШТАБНЫХ КОНВЕКТИВНЫХ СИСТЕМ В САРАТОВСКОЙ ОБЛАСТИ
Authors:   Саратовский национальный исследовательский государственный университет имени Н. Г. Чернышевского, Чересов Антон , Червяков Максим
Published: January 2023

Проведена оценка характеристик мезомасштабных конвективных комплексов (МКК) за тёплые периоды 2016-2021 гг. на основе спутниковых изображений в Саратовской обл. Выявлено, что чаще всего МКК наблюдались в июне, в то время как их размеры и по площади, и по протяжённости несколько меньше, чем те же характеристики в мае и июле.
ПРОВЕДЕНИЕ НАЗЕМНЫХ ЭКСПЕРИМЕНТОВ ПО НАВЕДЕНИЮ ЛУННОГО МАНИПУЛЯТОРНОГО КОМПЛЕКСА НА РАЗЛИЧНЫЕ ОБЪЕКТЫ В ЕГО РАБОЧЕЙ ЗОНЕ
Authors:   ИКИ РАН, Яковлев Владислав , Литвак Максим , Козлова Татьяна , Эльяшев Яков , Дзюбан Илья , Никитин Андрей
Published: January 2023

Представлены результаты наземных отладочных работ, проведённых в ИКИ РАН с лунным манипуляторным комплексом (ЛМК), разработанным для посадочной миссии «Луна-25». В ходе работ отрабатывалось взаимодействие ЛМК с другими приборами, входящими в комплекс научной аппаратуры «Луна-25»: лазерным ионизационным масс-спектрометром (ЛАЗМА-ЛР), стационарной телевизионной системой (СТС-Л) и ИК-спектрометром и стереокамерой (ЛИС-ТВ-РПМ). Совместная работа этих приборов должна обеспечить точное наведение ЛМК в рабочей зоне, копание лунного реголита, забор пробы, последующую её транспортировку и анализ элементного и изотопного состава лунного реголита.
ЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ УСТОЙЧИВО СТРАТИФИЦИРОВАННОЙ ТУРБУЛЕНТНОСТИ В ПРИБЛИЖЕНИИ ТОНКОГО СЛОЯ
Authors:   МФТИ, Воробьев Олег , Петросян Аракел
Published: January 2023

Рассматривается тонкий сферический слой жидкости в трёхмерной сферической системе с вращением. Динамика течения в условиях устойчивой стратификации описывается с помощью уравнений Буссинеска в приближении тонкого слоя. Для численного моделирования использованных уравнений разработан спектральный метод, в основе которого лежит разложение неизвестных по полным системам функций в горизонтальном и вертикальном направлениях. Выполнено моделирование трёхмерной затухающей турбулентности, исследовано влияние вращения на устойчиво стратифицированные турбулентные течения. Представлены спектры кинетической энергии как для системы с вращением, так и для системы без вращения.
ИССЛЕДОВАНИЕ ИЗМЕНЕНИЯ ПРИРОДЫ СПЕКТРАЛЬНОГО КОНТИНУУМА И СТАБИЛЬНОСТЬ ЦИКЛОТРОННОЙ ЛИНИИ В РЕНТГЕНОВСКОМ ПУЛЬСАРЕ GRO J2058+42
Authors:   ИКИ РАН, Горбан Алена , Мольков Сергей , Цыганков Сергей , Муштуков Александр , Лутовинов Александр
Published: January 2023

Представлены результаты исследования транзиентного рентгеновского пульсара GRO J2058+42 в широком диапазоне энергий в состоянии со светимостью Lx ; 2,5×1036 эрг ×с-1. В ходе работы было обнаружено, что профиль импульса источника, так же как и доля пульсирующего излучения, значительно изменились по сравнению с предыдущими наблюдениями обсерватории NuSTAR, когда пульсар был в ярком состоянии. Положение циклотронной линии на энергии ~10 кэВ в узкой фазовой области согласуется с наблюдениями в высоком состоянии. Был проведён спектральный анализ, который показал при высоких светимостях Lx ; (2,7-3,2)×1037 эрг ×с-1 типичную для аккрецирующих пульсаров форму спектра, в то время как при уменьшении светимости примерно на порядок, до Lx ; 2,5×1036 эрг ×с-1, для описания спектра необходимо использование двухкомпонентной модели.
ВАРИАЦИИ СОДЕРЖАНИЯ ВОДЫ И ХЛОРА В ГРУНТЕ МАРСА ВДОЛЬ ТРАССЫ МАРСОХОДА «КЬЮРИОСИТИ» ПО ДАННЫМ ИЗМЕРЕНИЙ ПРИБОРА ДАН
Authors:   ИКИ РАН, Дьячкова Майя , Никифоров Сергей , Митрофанов Игорь , Лисов Денис , Литвак Максим , Санин Антон
Published: January 2023

В статье представлены актуальные результаты активных и пассивных измерений прибора ДАН на борту марсохода НАСА «Кьюриосити». Содержание воды и хлора в грунте Марса, полученное по результатам измерений, изучалось отдельно для геологических регионов вдоль трассы движения марсохода. Показано, что содержание воды, измеренное как водородный эквивалент воды, колеблется от практически нуля до максимума 6,1±0,7 мас. %. Содержание эквивалентного хлора варьируется между практически нулём и 2,6±0,2 мас. %. Такие вариации интерпретируются как связанные с различными геологическими процессами, происходящими на поверхности Марса под влиянием различных условий окружающей среды.
ВЛИЯНИЕ МЁРТВОГО ВРЕМЕНИ НА ИЗМЕРЕНИЕ ЛИНЕЙНОЙ ПОЛЯРИЗАЦИИ В КОМПТОНОВСКИХ ДЕТЕКТОРАХ
Authors:   МФТИ, Мкртчян Аркадий , Позаненко Алексей ,   ИКИ РАН, Минаев Павел
Published: January 2023

Исследуется влияние мёртвого времени на измерения линейной поляризации в гаммадиапазоне сцинтилляционными детекторами. Мёртвое время детектора влияет на статистику регистрации и, как следствие, на точность измерения не только потока, но и степени линейной поляризации. Для упрощённой модели сегментрированного сцинтилляционного детектора рассмотрено влияние мёртвого времени на точность измерения поляризации. Оценка влияния мёртвого времени актуальна для измерения мощных транзиентных событий, таких как космические гамма-всплески (GRB) и гамма-вспышки земного происхождения (TGF).
СРАВНИТЕЛЬНЫЙ АНАЛИЗ КЛИМАТИЧЕСКИХ ПОЛЕЙ ОБЛАЧНОСТИ ЯНВАРЯ И ИЮЛЯ В СЕВЕРНОМ ПОЛУШАРИИ ПО СПУТНИКОВЫМ ДАННЫМ
Authors:   Саратовский национальный исследовательский государственный университет им. Н. Г. Чернышевского, Алимпиева Мария , Морозова Светлана , Короткова Надежда
Published: January 2023

По спутниковой информации об облачности построено среднее многолетнее поле облачности за два десятилетия: 2001-2010 и 2011-2020 гг. в январе и июле. Установлено, что средние климатические поля в январе и июле хорошо отражают основные климатические закономерности распределения облаков на Северном полушарии. Анализ изменения облачных полей от одного десятилетнего промежутка к другому позволил выявить области, в которых происходит увеличение или уменьшение облачности. И в январе, и в июле наблюдается тенденция увеличения облачности в районе экватора. В январе выявлено увеличение облачности в высоких широтах. Делается вывод, что увеличение облачности в районе экватора не способствует развитию потепления в этой зоне. Увеличение облачности в полярных широтах в январе может рассматриваться как фактор, препятствующий выхолаживанию и стимулирующий развитие потепления в Арктическом бассейне.
РЕЗУЛЬТАТЫ ОБРАБОТКИ ДАННЫХ ПАССИВНЫХ ИЗМЕРЕНИЙ ПРИБОРА ДАН НА БОРТУ МАРСОХОДА «КЬЮРИОСИТИ»
Authors:   ИКИ РАН, Никифоров Сергей , Дьячкова Майя , Митрофанов Игорь , Литвак Максим , Лисов Денис , Санин Антон
Published: January 2023

Приводятся результаты обработки данных пассивных измерений прибора динамическое альбедо нейтронов (ДАН), который установлен на борту марсохода «Кьюриосити». Рассматриваемые данные получены из пассивных операций ДАН, когда прибор измеряет поток нейтронов альбедо поверхности, создаваемое бомбардировкой галактическими космическими лучами и облучением от многоцелевого радиоизотопного термоэлектрического генератора, установленного на борту марсохода. Для анализа данных применялся ранее предложенный метод оценки содержания водного эквивалента водорода (ВЭВ) на основе пассивных измерений с использованием результатов активных измерений прибора ДАН. Было установлено, что средняя концентрация ВЭВ на участке 20 км составляет 2,6-0,7 мас. %, что соответствует результатам оценки методом активного нейтронного зондирования.
Crescei e Multiplicai-vos: os efeitos da expansão universitária sobre os municípios
Authors: Paula Camila , Emmendoerfer Magnus , Martin Débora
Published: January 2023

Contexto do caso: Este caso está baseado no contexto do federalismo e seus reflexos na administração pública de um município de pequeno porte, cujos fatores operacionais e estruturais interferem nos indicadores socioeconômicos e na implementação de políticas públicas formuladas no âmbito federal.
Dilema do caso: Os conceitos trabalhados no caso foram: planejamento estratégico governamental, administração pública e empresarial, políticas públicas e avaliação, federalismo e Lei de Responsabilidade Fiscal. Estes podem conduzir as discussões das ações possíveis e inferências na solução do caso.
Afinal, Quem Faz Acontecer? Habilidades de Líderes como Fator Para Implementação de Políticas de Gestão de Pessoas
Authors: Araújo Mariana Lopes de , Silvério Júlia Cássia dos Santos , Barbosa Giullio César da Silva , Menezes Pedro Paulo Murce
Published: January 2023

Objetivo da pesquisa: Descrever a relevância das habilidades políticas dos líderes de unidades de Gestão de Pessoas (GP) para a implementação de suas políticas em organizações públicas.
Enquadramento teórico: Tendo em vista que diversos fatores interferem a implementação de políticas e práticas de GP, este estudo considera a esfera política inerente ao complexo contexto das organizações públicas, abarcando o impacto das habilidades políticas da liderança de GP na inserção das unidades de GP nas arenas decisórias organizacionais.
Metodologia: Esta pesquisa caracteriza-se como teórico-empírica de natureza descritiva. O estudo empregou a abordagem qualitativa e, por meio de um recorte transversal, os dados foram coletados a partir de entrevistas semiestruturadas com líderes de GP de organizações públicas.
Resultados: A maneira apontada como mais relevante para enfrentar a multiplicidade de agendas e os diversos atores decisórios nas organizações é a produção e o controle das informações pela liderança de GP, de forma a moderar a percepção das informações e manipular as impressões dos demais atores sobre as iniciativas de GP com a incorporação das demandas gerais e particulares.
Originalidade: O ineditismo desta pesquisa se faz presente ao propiciar iniciativas de combate às contingências na implementação de políticas estratégicas de pessoal por meio da sinalização de relevantes habilidades políticas da liderança de GP.
Contribuições teóricas e práticas: A pesquisa convoca os líderes da unidade de pessoal do setor público a interpretarem o complexo contexto que circunda a máquina pública. A principal contribuição desta pesquisa é demonstrar que os representantes do setor de gestão de pessoas são agentes de transformação ao buscarem a constante inserção nos principais espaços de decisão, resultando em oportunidades de eleger iniciativas de elevado impacto benéfico para a sociedade.
A Satisfação dos Estudantes com a Qualidade dos Serviços Prestados pelas Universidades Federais Brasileiras: proposição de um modelo de avaliação baseado no ECSI
Authors: Scholl do Amaral Fernando , Añaña Edar
Published: January 2023

Objetivo da pesquisa: O trabalho propõe e testa um modelo para avaliar objetivamente a satisfação dos estudantes com a qualidade dos serviços prestados pelas universidades federais brasileiras.
Enquadramento teórico: O modelo é composto por seis dimensões de análise (imagem institucional, expectativas, qualidade percebida, satisfação, reclamações e confiança), e foi adaptado do American Customer Satisfaction Index e do European Customer Satisfaction Index para o contexto das universidades federais brasileiras.
Metodologia: O trabalho analisa uma amostra de 277 questionários, recolhidos por conveniência entre estudantes vinculados a uma universidade federal, cujos dados foram analisados através de Modelagem de Equações Estruturais realizada com o pacote Smart-PLS-3.3.3.
Resultados: Oito, das nove hipóteses de pesquisa testadas ao longo do trabalho foram confirmadas, e todos os construtos apresentaram índices aceitáveis de confiabilidade e de validade convergente, discriminante e nomológica.
Originalidade: O estudo estende o conhecimento, ao testar um modelo inovador, no qual a satisfação é vinculada à confiança e não à contrapartida monetária, como nos modelos tradicionais.
Contribuições teóricas e práticas: O trabalho também inova ao propor um método de avaliação da satisfação dos estudantes com os serviços prestados pelas universidades federais, aos estudantes das diversas carreiras, a partir da estimação dos intervalos de confiança das médias amostrais, um instrumento que poderá ser de grande utilidade para os gestores das universidades gratuitas.
Qualidade de Vida no Teletrabalho Compulsório no Contexto da COVID-19: Percepções entre os Gêneros em Organizações Públicas
Authors: Vieira de Velasco Simone Maria , Pantoja Maria Júlia , Mesquita Oliveira Míriam Aparecida
Published: January 2023

Objetivo da pesquisa: Analisar os níveis de Qualidade de Vida no Teletrabalho (e-QVT) compulsório durante a pandemia do coronavírus, de servidores públicos brasileiros a partir das percepções entre mulheres e homens e nos perfis segmentados: mulheres e homens com e sem filhos; mulheres com e sem filhos.
Enquadramento teórico: Qualidade de Vida no Teletrabalho Compulsório, cujo modelo teórico é composto por cinco dimensões: Atividades do Teletrabalhador; Gestão do Teletrabalho; Suporte Tecnológico; Condições Físicas do Trabalho; e Sobrecarga decorrente do Teletrabalho Compulsório.
Metodologia: Os dados foram obtidos por meio de formulário eletrônico com 5.695 servidores de nove instituições públicas brasileiras, sendo analisados por meio de análises descritivas e de variância.
Resultados: Os resultados evidenciaram níveis satisfatórios de e-QVT, com exceção das questões referentes à sobrecarga de trabalho. Ao comparar a percepção entre os grupos, foram identificadas diferenças significativas entre mulheres e homens com e sem filhos relacionadas à gestão do teletrabalho, mais especificamente, quanto às interrupções e ao conflito entre trabalho, descanso e lazer. O grupo de mulheres com e sem filhos apresentou diferenças significativas quanto às atividades do teletrabalho.
Originalidade: O presente artigo apresenta perspectiva inovadora, uma vez que revela, além das diferentes percepções entre os gêneros, resultados com variâncias expressivas entre o mesmo gênero e, também, decorrentes da configuração familiar, no que diz respeito à e-QVT compulsório em organizações públicas.
Contribuições teóricas e práticas: Além da perspectiva de gênero, a percepção de e-QVT compulsório pode diferir conforme a configuração da estrutura familiar, expressa por níveis menos satisfatórios nas famílias com filhos, o que demanda dos gestores a proposição de práticas de promoção de e-QVT que diminuam ou eliminem as fontes de mal-estar percebidas, observadas as especificidades entre os gêneros e dentro do mesmo gênero.
Espiritualidade no Trabalho: Um Modelo de Mensuração para Organizações Públicas Brasileiras
Authors: Coelho Moreira Diogo , Guimarães de Vargas Sabrina , Flores Battistella Luciana
Published: January 2023

Objetivo da pesquisa: Propor um modelo de mensuração da espiritualidade no trabalho para organizações públicas brasileira.Enquadramento teórico: Utilizou-se o conceito e o modelo estruturados por Ashmos e Duchan (2000), visto que esses autorestrazem a definição mais utilizada nas publicações acadêmicas sobre o assunto.Metodologia: Realizou-se a validação de um modelo de mensuração da espiritualidade no trabalho, aplicado em uma organizaçãopública brasileira, por meio da análise fatorial exploratória e confirmatória. Os dados foram obtidos por meio de levantamento(survey).Resultados: Um modelo de mensuração da espiritualidade no trabalho para organizações públicas brasileiras, contendo 16variáveis, para o qual considerou-se, além do resultado da validação, as argumentações teóricas, estatísticas e práticas, visando aadequação ao contexto dessas organizações.Originalidade: Considerando que não foram encontrados na literatura modelos desenvolvidos para a mensuração daespiritualidade no trabalho em organizações públicas, o modelo proposto neste estudo busca preencher essa lacuna.Contribuições teóricas e práticas: Além de buscar preencher uma lacuna da literatura, o modelo proposto busca possibilitar amensuração da espiritualidade no trabalho em organizações públicas brasileiras, auxiliando os gestores públicos na tomada dedecisão quanto à implantação ou à avaliação de políticas e de ações relacionadas ao desenvolvimento desse constructo.Palavras-chave: Espiritualidade no trabalho, Validação de modelo de mensuração, Organizações públicas brasileira
Como Apoiar o Controle Social? Abrindo Espaço na Agenda para um Conselho Remoto de Cidadãos – o Conselho de Participação Social
Authors: Rocha da Silva Lucélia , Batista da Silva Eudenísio , Melo Valêncio Tiago , Ramalho Freitas Diego , Lynn Nogueira Santos Marjorie , Siqueira Lessa Alessandra
Published: January 2023

Contexto do caso: o caso se insere no contexto em que as atribuições de fomentar o governo aberto e a participação cidadã ganham destaque para além das clássicas atribuições de auditoria, inspeção e correição dos órgãos de controle interno.
Dilemas do caso: o dilema reside em estabelecer um conselho de participação social remoto, em um cenário cuja efetividade e legitimidade desse tipo de fórum vem sendo questionada e no qual o formato remoto possui limitações principalmente em garantir a representatividade das partes interessadas mais excluídas da sociedade.
Fechamento do caso: a narrativa leva o aluno a: (i) refletir sobre formas de participação em uma democracia representativa e sobre estratégias para definição de uma política pública na agenda governamental; (ii) opinar sobre o caminho que os gestores públicos devem seguir, levando em consideração que expandir a proposta de inclusão social pode significar em resistência do próprio governo, tanto em sua esfera executiva como legislativa, de aprovar a proposta e (iii) avaliar o uso de tecnologias da informação e comunicação para aumentar a participação e a representatividade de diversos grupos de cidadãos.
Hóspedes Incômodas ou Bem Vindas? As Emoções em um Órgão Público de Minas Gerais
Authors: De Souza Mariana Mayumi Pereira , Ventola Marra Adriana , Guerra Borges Tiago , Cardoso de Lima Ana Flávia
Published: January 2023

Objetivo da pesquisa: Compreender a articulação das emoções às práticas organizacionais em um órgão público de Minas Gerais.Enquadramento teórico: As emoções são estudadas sob os pontos de vista político e construtivista, entendendo-as como produtose produtoras da realidade. Dessa forma, as emoções fazem parte da racionalidade humana e integram as práticas organizacionaisde maneira consciente ou inconsciente (Zietsma & Toubiana, 2018; Oliveira & Cavedon, 2019).Metodologia: Foi realizada uma pesquisa qualitativa, descritiva e exploratória. A coleta de dados ocorreu por meio de entrevistassemiestruturadas com dezesseis servidores do órgão público pesquisado, entre os meses de janeiro e julho de 2021. Os dados foramanalisados por Análise de Conteúdo.Resultados: Foram apontadas algumas relações entre emoções e sentimentos dos entrevistados com práticas comuns naorganização, revelando como a estrutura burocrática e as relações de poder influenciam nas experiências emocionais. A pesquisaconclui que determinados tipos de práticas organizacionais contribuem para uma integração mais saudável e construtiva dasdinâmicas emocionais ao trabalho.Originalidade: Muitos estudos que abordam o tema das emoções nas organizações partem de polarizações entre a razão e asemoções. Nesta pesquisa, demonstramos como as emoções integram as racionalidades nas práticas organizacionais. A grandemaioria parte também de abordagens funcionalistas, negligenciando aspectos políticos e relacionais.Contribuições teóricas e práticas: O presente artigo contribui para ampliar o debate sobre as emoções na Administração e nosEstudos Organizacionais, trazendo como as emoções se articulam às práticas organizacionais e às racionalidades subjacentes. Dessaforma, aponta para possíveis caminhos rumo à construção de ambientes de trabalho mais propícios ao desenvolvimento emocional.
Desenvolvimento Comunitário e Cooperativismo de Crédito: Influências nos Modos de Vida da Comunidade Chapadense
Authors: Souza Gustavo Henrique Dias , Bressan Valéria Gama Fully , Carrieri Alexandre de Pádua
Published: January 2023

Objetivo da pesquisa: Considerando as possibilidades de alteração da vivência das pessoas a partir da inclusão financeira, a temática da pesquisa foi definida em analisar as mudanças nos modos de vida da população de Chapada Gaúcha-MG a partir da criação da cooperativa de crédito Sicoob Credichapada.
Enquadramento teórico: A lente teórica que fundamenta a pesquisa é a teoria do desenvolvimento comunitário, com as visões de Garkovich (2011) e Gunton e Markey (2021), com orientação para o desenvolvimento comunitário cooperativo, apoiada em Zeuli e Radel (2005).
Metodologia: A pesquisa se utiliza de observação, análise documental e entrevistas semiestruturadas com sujeitos do território em estudo, além da utilização do diário de campo como fonte de informações.
Resultados: Os resultados evidenciam que o processo de composição do município, marcado por dificuldades, é transformado com a criação da cooperativa, gerando mudanças tematizadas como economia financeira e comodidade, auxílio ao comércio local, facilidade de acesso ao crédito, geração de empregos, capacitação de membros e colaboradores, participação cívica, apoio à agricultura local e auxílio a instituições filantrópicas.
Originalidade: Além da análise das mudanças ainda inexplorados sobre os modos de vida dos sujeitos da pesquisa, o estudo inova ao ressaltar empiricamente as contribuições da criação das cooperativas de crédito sobre diferentes aspectos de uma vida comunitária.
Contribuições teóricas e práticas: O estudo contribui para a lente teórica utilizada ao trazer aspectos em que as cooperativas de crédito podem auxiliar no desenvolvimento a partir de suas práticas. Além disso, o estudo demonstra que a atuação de instituições financeiras cooperativas pode gerar mudanças sobre os modos de vida das comunidades, sugerindo políticas voltadas para maior articulação e fortalecimento do cooperativismo financeiro no país.
Bioethanol Production by Candida tropicalis Isolated from Sheep Dung
Authors: Jafer Furdos Noori.
Published: January 2023

Microorganisms have an active role in biotechnology for example yeasts, especially in some genus like Saccharomyces, Pichia, and Candida.  C.tropicalis one of the most important species of Candida and despite it is one of the causative agents of candidiasis but it has a major role in the production of many chemical compounds. C.tropicalis  in the previous study was isolated from sheep dung and morphologically and molecularly classified the result of sequencing was elucidate 100% similarity between the studied isolate and other isolates inserted in DNA Data Bank of Japan DDBJ, physiologically this isolate tolerated 6% ethanol concentration in broth media with the ability to the production of 4% ethanol under optimum conditions including  (YEPDB) medium, incubation temperature 30◦C, PH 6 and dextrose as a carbon source which give more productivity as a carbon source and optimum incubation period was three days . This isolate gives a positive result for the cellulase enzyme-producing test and an exciting feature to remove effluent because it completely adsorbed the Congo red dye from dye solation in a liquid growth medium.
An Application of the Banzhaf Values for Cooperating Among Producers of Waste Processing in the Al-Mahmudiya Factory
Authors: Hadi Huda , Abbas Jabbar
Published: January 2023

The game theory has been applied to all situations where agents’ (people or companies) actions are utility-maximizing, and the collaborative offshoot of game theory has proven to be a robust tool for creating effective collaboration strategies in a broad range of applications. In this paper first, we employ the Banzhaf values to show the potential cost to waste producers in the case of a cooperation and to reduce the overall costs of processing non-recyclable waste during cooperation between producers. Secondly, we propose an application of the methodology to study a case for five waste producers' waste management in the Al-Mahmudiya factory with the aim of displaying the potential cost to waste producers in case of cooperation. Lastly, the obtained results of the proposed framework will strongly help professionals to formulate and improve well-organized strategies for the waste management system of the future.
A Statistical Study of the Amount of Radiation Generated from Communication Towers in the Nineveh Plain Region, Baghdeda
Authors: Yacoob Ilham M. , Basheer Rajaa A. , Karyakos Raed Sabeeh , Kheder Malik H.
Published: January 2023

This research presents a statistical study of radiation generated from communication towers in the Nineveh Plain region Baghdeda. The intensity of radiation energy was measured at 10 meters away from the communication tower in different locations, using a (1PC XH-901 Dosimeter/ Personal Dose Alarm / Radiation Detector, dosage rate: 0.01 μSv/h to 150μSv/h) to measure the amount of radiation at various times. Energy densities were measured and compared with standard limits provided by other authorities, such as the International Committee for Radiation Protection. Results were analyzed using SPSS version 26 to implement the data. The results show that the means of the radiation levels measured at all the zones do not statistically differ from the highest values determined globally 0.50-1.70 μSv/y; they lie within the radiation-free zones. Civilians may not always have a choice where the mobile tower will place. As a result, it may rely on some quick fixes, such as certified radiation protection items that offer all-around protection from mobile tower irradiance. The radiation shielding technology used in these goods alters the nature of irradiation from a constant to a variable waveform, rendering it useless.
Reducing the Mutual Coupling of Cylindrical Circular Microstrip Antennas (CCMAs) Array Using EBG Structure
Authors: Areebi Nabeel Abbas
Published: January 2023

A theoretical study to design a conformal microstrip antennas was introduced in this work. Conformal microstrip antennas define antennas which can be conformed to a certain shape or to any curved surface. It is used in high-speed trains, aircraft, defense and navigation systems, landing gear and various communications systems, as well as in body wearable. Conformal antennas have some advantages such as a wider-angle coverage compared to flat antennas and low radar cross-sectional (RCS) and they are suitable for using in Radome. The main disadvantage of these antennas is the narrow bandwidth. The FDTD method is extremely useful in simulating complicated structures because it allows for direct integration of Maxwell's equations depending on time. The 1x2 cylindrical circular microstrip antennas array is designed and simulated vertically via Finite Difference Time Domain (FDTD) method where can directive antenna be achieved through antennas array design. Mutual coupling between the antennas in the array and the different separation between them were studied. The circular patch is excited by a probe feed method for several reasons including providing less spurious radiation from the probe current, in addition to the simplicity in theoretical engineering installation and practical manufacturing. It is well known that the values of the coupling are decreased as the distance separation increased. Cylindrical circular microstrip antenna with resonant frequency operating is 3.5GHz for  mode, several parameters like return loss, band width, and input impedance are calculated. Also, for isolated coupling, mutual coupling coefficients, directivity gain, for different separations between the centers of the two adjacent circular patches in terms the wave length operating are calculated. Moreover, the electromagnetic band gap EBG structure is used for reducing the mutual coupling created by the surface waves in order to enhance the antenna's performance in an array has become smaller than before. The proposed EBG is a three triangular-shape equal sides metallic structure, utilizing the inter-element spacing in an array. The less value of   for the spacing between the two centers of patches is . BW percentage increased to 34.3% and the directivity is enhanced also.  Additionally, simulations were done using MATLAB 2017b.
Kinetic and Theoretical Study of Removal Gentian Violet from Aqueous Solution Using Stachy Plant
Authors: Mahmood Zhahraa A. , Farhan Ahlam M , Kadhim Nafeesa J , Hade Muna S
Published: January 2023

The main parameters and methods influencing the removal of Gentian Violet (GV) dye from aqueous media were investigated using a stachy plant in this study. The surface of the stachy plant was determined using FTIR spectra. Adsorption is influenced by the adsorbent's characteristic groups. The research took into account the usual conditions for GV dye adsorption by the stachy plant, such as the impact of contact time. Mass dosage , after 0.3 g the amount of adsorbed dye declines. Study pH and ionic strength, the results obtained showed that at pH 3 the largest adsorption of (GV) was seen, while at pH 9, the lowest adsorption was observed  at 298 K, the adsorption kinetics and equilibrium constants were achieved, and the equilibrium data was fitted using the Langmuir, Freundlich, and Temkin models. The pseudo-first-order and pseudo-second-order kinetic models were used to investigate the adsorption process of gentian violet. The adsorption kinetics was discovered to be governed by a pseudo-second-order kinetic model with a determination coefficient (R2) of 0. 0.9943. Study the theoretical electrostatics of Gentian Violet dye was measured and plotted as a 2D and 3D contour and the program hyperchem-8.07 was used for semi-empirical and molecular mechanic calculations in the gas phase to estimate the total energy.
Corrosion Inhibition of Medium Carbon Steel in the Acidic Medium Using Alcoholic and Aqueous Extract of Kujarat Tea Plant
Authors: Mohammed Suhad S. , Aljebur Layla A.
Published: January 2023

This study deals with the corrosion inhibition of metal corrosion process of medium carbon steel using 1M HCl for kinetic studies and rate reaction determination. The weight loss method is applied to pieces of Medium carbon steel divided to Cubans with dimensions (0.4*2*2.4) cm , and use Tafel Extrapolation Method, the samples were polished using carbide silicon paper with dimensions of (180,200,400,600,800,1000). The samples were immersed in the alcoholic medium ethanol at a temperature 293K for 3hr. Natural inhibitor Kujarat Tea (Hibiscus sabdarriffa L.) is used which is extracted in aqueous and alcoholic medium, different concentrations (1000،2000, 3000) ppm have been used ; The best concentration found through the results is a concentration found that is 1000 and 2000 ppm, the results indicate that the highest degree of inhibition for aqueous extract is 93.3% with the concentration of 2000 ppm and 90.5% with 1000 ppm at293K. While the alcoholic inhibitor shows the highest efficiency 92.4% with a concentration of 2000 ppm and 88.6% with a concentration of 1000 ppm respectively. The structure of the inhibitor was investigated using infrared spectroscopy (FTIR), and the surface morphology of the tested samples was investigated using a scanning electron microscope (SEM).
Degradation of Indigo Dye Using Quantum Mechanical Calculations
Authors: Mohammed Halla T. , Kamil Ahmed M. , Abduljalil Hayder M. , Ali Drea Abbas A- , Al-Seady Mohammed A.
Published: January 2023

The semiempirical (PM3) and DFT quantum mechanical methods were used to investigate the theoretical degradation of Indigo dye. The chemical reactivity of the Indigo dye was evaluated by comparing the potential energy stability of the mean bonds. Seven transition states were suggested and studied to estimate the actually starting step of the degradation reaction. The bond length and bond angle calculations indicate that the best active site in the Indigo dye molecule is at C10=C11.  The most possible transition states are examined for all suggested paths of Indigo dye degradation predicated on zero-point energy and imaginary frequency. The first starting step of the reaction mechanism is proposed. The change in enthalpy, Gibbs free energy and change in entropy of the overall reaction are equal to -548268.223 kcal/mol, 30831.951 kcal/mol and 48.552 cal/mol.deg, respectively. The activation energy is 46176.405 kcal/mol. The reaction rate is equal to .
Spectrophotometric Determination of Micro Amount of Chromium (III) Using Sodium 4-((4,5-diphenyl-imidazol-2-yl)diazenyl)-3-hydroxynaphthalene-1-sulfonate in the Presence of Surfactant, Study of Thermodynamic Functions and Their Analytical Applications
Authors: Abdul Ameer Hawraa Abdul Hadi , Hussain Alaa Frak
Published: January 2023

Using sodium4-((4,5-diphenyl-imidazol-2-yl)diazenyl)-3-hydroxynaphthalene-1-sulfonate (SDPIHN) as a chromogenic reagent in presence of non-ionic surfactant (Triton x-100) to estimate the chromium(III)  ion if the wavelength of this reagent 463 nm to form a dark greenish-brown complex in wavelength 586 nm at pH=10,the complex was stable for longer than 24 hours. Beer's low, molar absorptivity 0.244×104L.mol-1.cm-1, and Sandal's sensitivity 0.021 µg/cm2 are all observed in the concentration range 1-11 µg/mL. The limits of detection (LOD) and limit of quantification (LOQ), respectively, were 0.117 µg/mL and 0.385µg/mL. (mole ratio technique, job's method) were employed to investigate the stoichiometry of complexes, and both methods revealed that the metal to reagent ratio is equal 1:3.The absorption impact value of the reagent concentration, surfactant concentration, pH, reaction duration, temperature, addition sequences, ionic strength, masking agent, and the influence of many parameters such as affect cations and anions, among others. The influence of temperature on the reaction, which was referred to as an exothermic reaction, was also taken into account while calculating thermodynamic functions. Researchers investigated some of the complex solid's physical properties, such as solubility, molar conductivity, and melting point, as part of its development. UV-visible rays were used to investigate the chromium complex, while Relative Standard Deviation (RSD%) and Relative Error (E %) were used to assess the precision and accuracy of the novel method.
Synthesis, Anticancer and Antibacterial Activity of Mannose-based bis-1,2,3-Triazole Derivatives
Authors: Mahdi Lamyaa Salih , Mohammed Adnan Ibrahim , Mohammed Majed Jari
Published: January 2023

In the current work, aromatic amines and alkyl halides have been converted to the corresponding azides 2a‒d and 4a-d by the reaction with sodium nitrite and sodium azide respectively for amines and sodium azide for halides. Then, dipropargyl ether derivative of D-mannose 8 has been synthesized from diacetone mannose that has been obtained by the treatment of D-mannose (5) with dry acetone in the presence of sulfuric acid. Then, aldol condensation has been used to prepare diol 7 from the mannose diacetonide 6. The reaction of compound 7 with propargyl bromide in alkaline media has been afforded dipropargyl derivative 8. In a parallel step, both dialkyne with aromatic and aliphatic azide have been coupled to produce 1,2,3-triazole derivatives 9a‒d in the presence of Cu(I) salts. All synthesized compounds have been characterized by 1D and 2D NMR spectra alongside with HRMS data. The antibacterial activity against both gram-positive and gram-negative has been tested. Moreover, the anticancer activity has also been evaluated against AMJ13 cell line.
An Effective Hybrid Deep Neural Network for Arabic Fake News Detection
Authors: Wotaifi Tahseen A. , Dhannoon Ban N.
Published: January 2023

Recently, the phenomenon of the spread of fake news or misinformation in most fields has taken on a wide resonance in societies. Combating this phenomenon and detecting misleading information manually is rather boring, takes a long time, and impractical. It is therefore necessary to rely on the fields of artificial intelligence to solve this problem. As such, this study aims to use deep learning techniques to detect Arabic fake news based on Arabic dataset called the AraNews dataset. This dataset contains news articles covering multiple fields such as politics, economy, culture, sports and others. A Hybrid Deep Neural Network has been proposed to improve accuracy. This network focuses on the properties of both the Text-Convolution Neural Network (Text-CNN) and Long Short-Term Memory (LSTM) architecture to produce efficient hybrid model. Text-CNN is used to identify the relevant features, whereas the LSTM is applied to deal with the long-term dependency of sequence. The results showed that when trained individually, the proposed model outperformed both the Text-CNN and the LSTM. Accuracy was used as a measure of model quality, whereby the accuracy of the Hybrid Deep Neural Network is (0.914), while the accuracy of both Text-CNN and LSTM is (0.859) and (0.878), respectively. Moreover, the results of our proposed model are better compared to previous work that used the same dataset (AraNews dataset).
Eco-Friendly Synthesized of CuO Nanoparticles Using Anchusa strigosa L. Flowers and Study its Adsorption Activity
Authors: Khit Safaa Ali , Kareem Eman Talib , Shaheed Ihsan Mahdi
Published: January 2023

Environmentally friendly copper oxide nanoparticles (CuO NPs) were prepared with a green synthesis route via Anchusa strigosa L.  Flowers extract. These nanoparticles were further characterized by FTIR, XRD and SEM techniques. Removing of Gongo red from water was applied successfully by using synthesized CuO NPs which used as an adsorbent material. It was validated that the CuO NPs eliminate Congo red by means of adsorption, and the best efficiency of adsorption was gained at pH (3). The maximum adsorption capacity of CuO NPs for Congo red was observed at (35) mg/g. The equilibrium information for adsorption have been outfitted to the Langmuir, Freundlich, Temkin and Halsey adsorption isotherm types. The temperature thermodynamic parameters like ΔG°, ΔH° and ΔS° have been calculated.
An evaluation of waste and well water quality for agriculture production around Erbil city, Iraq
Authors: Youni Abdulqader M. , Darwesh Dlshad A.
Published: January 2023

Erbil city is located in the northern Iraq with a population of over one million people. Due to water crises farmers usually use wastewater and well water for the agricultural production. In this study six stations were designed to sample waste water and three from well water to define waste water and ground water characteristics. In this study, Residual Na+ Carbonate, Mg++ hazard, salinity hazard, Kelley index, %sodium, total hardness, permeability index, potential salinity, sodium adsorption ratio, and Irrigation Water Quality Index (IWQI) were determined. The order of average cation concentrations in water was Mg2+> Ca2+ > Na+ > K+. While the proportion of main anions in water were HCO3 >SO4 > Cl. The highest concentrations of Ca2+, Mg2+ and Na+ were found in well water, while the highest concentration of K+ was found in wastewater. The maximum concentration of HCO3 and Cl recorded in well water, while the highest concentration SO4 recorded in wastewater. Moreover, the order of trace elements was Pb > Al > Fe > Cd > As > Mn >Cr > Ag > Ni. Keeping in mind metal concentration set by  US EPA and FAO (1999) and (1994) guidelines the levels of Pb, Al, Fe, Mn, Cr, Ag and Ni in the waste and well water were within the admissible limitations  for irrigation schemes. Moreover, limitations of As and Cd were beyond permissible limitation need to be reduced.  The IWQI ranged from 88.92 to 95.09 in the waste water samples. Overall assessment reveals that cultivated agriculture plants were secured from toxic compounds.
Performance Evaluation of a Triple Concentric Tube Heat Exchanger Using Deionized Water and Oil-40
Authors: Hasen Huda Majid
Published: January 2023

This study examines experimentally the performance of a horizontal triple concentric tube heat exchanger TCTHE made of copper metal using water as cooling fluid and oil-40 as hot fluid. Hot fluid enters the inner annular tube of the TCTHE in a direction at a temperature of 50, 60 and 70 oC and a flow rate of 20 l/hr. On the other hand, the cooling fluid enters the inner tube and the outer annular tube in the reverse direction (counter current flow) at a temperature of 25 oC and flow rates of 10, 15, 20, 25, 30 and 35 l/hr. The TCTHE is composed of three copper tubes with outer diameters of 34.925 mm, 22.25 mm, and 9.525 mm, and thicknesses of 1.27 mm, 1.143 mm, and 0.762 mm, respectively. TCTHE tube's length was 670 mm. Nusselt number, overall heat transfer coefficient, convective heat transfer coefficient (CHTC), friction factor and pressure drop were measured from the obtained experimental results and plotted in graphs against Reynold number and volumetric flow rate of water. These parameters appeared good results in the cooling process. Nusselt numbers increased linearly with DIW flow rate for both C1 and C2 reaching maximum values of 38.25 and 14.64 respectively. CHTC increased linearly with the DIW flow rate for both C1 and C2 reaching maximum values of 2934.3 and 871.7 respectively. Overall heat transfer coefficient of DIW reached maximum values of 296.36 and 251.4 at 35 l/hr for C1 and C2, respectively. Friction factor DIW in C1 and C2 decreased with the volumetric flow rate increases, reaching minimum values of 0.04 and 0.25 respectively. Pressure drop of DIW increased linearly with flow rate reaching maximum values of 81.4 and 4.31 for C1 and C2 respectively. This in turn leads to reduced TCTHE length and size leading to a decrease in the construction cost of the heat exchanger.
Effective Feature Selection in Speech Emotion RecognitionSystems using Generative Adversarial Networks
Authors: Shilandari Arash , marvi hossein , Hadjiabdolhamid negin
Published: January 2023

Thus far, it has been unknown whether feature selection methods succeed in increasing the efficiency of speech-emotion recognition systems. This article discusses and evaluates feature selection for data augmentation purposes in a speech emotion recognition system. This study performed the experiments using Python and on four common databases: EMODB,eNTERFACE05, SAVEE, and IEMOCAP. Data analysis was conducted on all four databases for five emotions: sadness, fear, anger, happiness, andneutral. A support vector machine was used to classify emotions. We also used a generative adversarial network to augment data and two feature selection networks, Fisher and Linear Discriminant Analysisalgorithms. In two steps and with the feedback from the classification network, we could bring the speech emotion recognition to an optimal point in sample number and feature vector dimensions. The results showed that using Linear Discriminant Analysis and the Fisher method simultaneously in the generative adversarial networks can remove redundant and irrelevant features while preserving features with important emotional information for classification. The results obtained from the proposed method were compared with that of recent studies. The proposed method was able to achieve 86.32% accuracy in the Berlin Database of Emotional Speech.
Exploring the role of gut microbiota dysbiosis in gout pathogenesis: a systematic review
Authors: Shirvani-Rad Salman , Khatibzade-Nasari Niloufar , Ejtahed Hanieh-Sadat , Larijani Bagher
Published: January 2023

Objective
Different mechanisms play role in the pathogenesis of gout and gut microbiota is believed to be one of these factors. The main goal of this systematic review is to summarize evidence regarding changes in gut microbiota composition in gout disease and uncover underlying mechanisms.
Methods
A comprehensive search was conducted on PubMed, Web of Science and Scopus databases up to October 2021. Animal studies and human observational studies including case-control, cross-sectional, and cohorts assessing associations between the gut microbiota composition and gout were included. The quality of the included human and animal studies has been evaluated using the Newcastle–Ottawa Quality Assessment scale (NOS) and the SYRCLE's risk of bias tool, respectively.
Results
15 studies from 274 recorded studies were included in this systematic review. 10 studies on human and 5 on animals. Increase in frequency of Alistipes and decreased Enterobacteriaceae lead to changes of enzyme level in purine metabolism and aggravates gout condition. Moreover, rise of Phascolarctobacterium and Bacteroides play role in gout through enzyme modulation. Butyrate-producing bacteria such as Faecalibacterium, prausnitzii, Oscillibacter, Butyricicoccus and Bifidobacterium revealed an increase in healthy controls compared to gout patients which points to the possible underlying role of short-chain fatty acids (SCFAs) leading to both anti-inflammatory advantages and promoting intestinal barrier for host. Lipopolysaccharides (LPS)-releasing bacteria, Enterobacteriaceae, Prevotella and Bacteroides, also impact on gout disease by stimulating the innate immune system.
Conclusion
Exploring gut microbiota dysbiosis in gout disease and the underlying mechanisms could make a novel insight for microbiota-modulating therapies.
Evolutionary Pathways of Ecosystem Literature in Organization and Management Studies
Authors: Coccia Mario , Ghazinoori Soroush , Roshani Saeed
Published: January 2023

Literature shows manifold concepts of the ecosystem. A critical issue in social studies of science is that these concepts include different construct’s core elements. Recent reviews have set out to clarify the conceptual boundaries between ecosystem concepts. However, there are many inconsistencies to clarify the interaction of different concepts that have supported their scientific evolution to help scholars in scientific investigations and firms to achieve and sustain competitive advantage and other goals. This study endeavors to advance the understanding of the evolutionary pathways of different concepts of the ecosystem. In particular, here, we explore the scientific dynamics of the concept of ecosystem, using author co-citation analysis to clarify the interaction between different concepts in social communities of science. The findings show systematical differences in the ecosystem types considering their conceptual basis and goals. Especially, findings suggest that the current concept of ecosystem is being socially constructed based on different domains of knowledge of scholars and evolves from a master community started with the work by Moore in 2003, generating four evolutionary pathways with specific characteristics directed to: Entrepreneurial ecosystem, Innovation ecosystem, Service ecosystem, and the Platform ecosystem. Results seem to suggest fragmented and contradictory views of the concept of ecosystem, because of different evolution based on social and scientific interactions of scholars and their communities in shaping the dynamics of science in these fields of research. The splitting and merging of different social and scientific communities in an international collaboration network do not converge towards a consistent and unique perspective of the concept of ecosystem for a general analysis because of initial origins based on conceptual differences, different approaches of analysis and purposes of research and consequential various evolutionary pathways in complex scientific interactions between communities. Hence, these results clarify the science dynamics of the concepts of ecosystem to explain different applications in theoretical and practical contexts of organization and management studies.