bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Streptococcus mitis and Streptococcus mutans on the adhesion of Streptococcus salivarius to lithium disilicate glass-ceramics of varying roughnesses
Authors: Kavaz Tuğçe , Özdemir Hatice
Published: September 2023

Aim: The aim of this in vitro study was to determine how different polishing kits affect the surface roughness of lithium disilicate glass-ceramic and to examine the effect of Streptococcus mitis and Streptococcus mutans on the adhesion of Streptococcus salivarius to the glass-ceramic.
Methodology: A total of 96 lithium disilicate glass-ceramic specimens were prepared and divided into four groups: control, rough, D+Z polished, and OptraFine polished. A total of 16 subgroups were obtained based on four combinations of three bacteria. After adding artificial saliva to the surface, all specimens were incubated in suspensions prepared for bacterial combinations. Bacterial adhesion values in the colonies formed were obtained according to the colony-forming unit (CFU) system.
Results: The highest Sa values were found for the rough group, followed by the OptraFine polished, D+Z polished, and control groups, but, except for the control group, the values were statistically similar (p > 0.05). The difference between S. salivarius and the triple bacteria combination was statistically significant for the S. salivarius CFU values in the control group. The difference between S. salivarius, S. salivarius + S. mutans, and the triple bacteria combination groups was significant for the rough group (p < 0.05). S. salivarius alone accumulated the most on all specimen surfaces. In the control group, a high level (r=0.6-0.8) of positive correlation was found between the S + Mit group and the S + Mit + Mut group. In the rough group, a high (r>0.8) positive correlation was found between the S + Mut and S + Mit + Mut groups in terms of S. salivarius adhesion.
Conclusion: For lithium disilicate glass-ceramic material, polishing systems are not sufficiently efficient after the glaze layer has been removed.
 
How to cite this article:
Kavaz T, Özdemir H. Effect of Streptococcus mitis and Streptococcus mutans on the adhesion of Streptococcus salivarius to lithium disilicate glass-ceramics of varying roughnesses. Int Dent Res 2023;13(1):27-34. https://doi.org/10.5577/idr.2023.vol13.no1.5
 
Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.
Geração automática de metadados: estudo de caso utilizando a técnica de indexação automática estatística com a ferramenta ANNIF
Authors: Brito Jean Carlos Borges , Martins Dalton Lopes
Published: September 2023

Esta pesquisa apresenta um estudo de caso com a ferramenta ANNIF, executando a geração automática de metadados através da técnica de indexação automática estatística e aprendizagem de máquina, utiliza algoritmo baseado em regras para extrair valores de metadados dos recursos de informação. O objetivo do trabalho é elaborar um framework para utilização da ferramenta. Criou-se um corpus de conhecimento com 52 artigos da Base Brasileira de Ciência da Informação (BRAPCI), utilizando como vocabulário controlado o Tesauro Brasileiro em Ciência da Informação (TBCI). Após o processo de treinamento do modelo realizou-se teste preliminar de indexação automática estatística sobre uma Tese Completa armazenada no Repositório Institucional da Universidade de Brasília (RiUnB) gerando a recomendação de assuntos/descritores. Os termos atribuídos pelo ANNIF foram comparados com as palavras-chave da tese da RiUnB, obtendo boa similaridade. Conclui-se que o uso do ANNIF, utilizando a técnica de indexação automática estatística contribuiu para automatização da tarefa, obtendo desempenho satisfatório.
Socioemotional aspects in the school trajectory and effects on academic performance
Authors: Esquivel Francisco Alonso , Aranda Cynthia Berenice Castro , López Indira Lizeth de la Garza , Castillo Oliverio Rangel , Moreno Sonia Edith Reyna , Claudio Jorge Luis Nieto , Orozco Rafael Medina , Flores Víctor Alfonso Salazar
Published: September 2023

This study focuses on exploring the socio-emotional aspects of the school trajectory and its impact on the academic performance of students. It is recognized that socio-emotional aspects play a crucial role in the development of students, not only in their general well-being, but also in their academic performance. Understanding how these aspects influence the school trajectory is essential to implement effective strategies to support and promote academic achievement at the high school level. Through an exhaustive review of the scientific and academic literature, the different socio-emotional aspects that can affect the school trajectory and academic performance of students are analyzed. Key variables such as socio-emotional well-being, anxiety, stress and emotional intelligence, and their relationship with academic performance, are examined. The findings highlight the importance of socio-emotional well-being in the school trajectory. Students who experience greater social-emotional well-being show greater motivation, commitment to learning, and better academic results. In addition, it is identified that elevated levels of anxiety and stress can have negative effects on academic performance, affecting attention, concentration, and memory of students. On the other hand, the role of emotional intelligence in academic performance stands out, since students with more developed skills in this area tend to show greater commitment and obtain better results in standardized tests. Recommendations are proposed to improve academic performance in high school, such as implementing social-emotional education programs, providing emotional support and counseling, promoting a positive school environment, setting realistic goals, and fostering collaboration between parents, teachers, and students. These recommendations aim to strengthen the emotional and social health of students, providing strategies and tools that allow them to face academic and socio-emotional challenges effectively.
Исследование влияния термической обработки на качественные показатели грибов вешенки
Authors: Неверов Евгений Николаевич , Лифенцева Людмила Владимировна , Короткий Игорь Алексеевич , Тюнин Аркадий Дмитриевич , Салищева Олеся Владимировна
Published: September 2023

Целью исследования является определение влияние термической обработки холодом на условия, сроки хранения и качественные показатели культивируемых грибов вешенки. Рассмотрены режимы холодильной обработки при температурах минус 30 °С и минус 60 °С (естественная конвекция), а также минус 25 °С (вынужденная конвекция). В качестве исследований использованы свежие грибы вешенки в виде сростков. Построены термограммы замораживания при данных температурных режимах для определения продолжительности процесса замораживания и термограммы размораживания сразу после процесса замораживания при комнатной температуре 20 °С с целью определения потери массы. Выявлено, что продолжительность процесса замораживания грибов вешенки при температуре минус 25 °С (вынужденная конвекция) самый непродолжительный и почти в 2–3 раза меньше, чем при других температурных режимах. Потери массы при размораживании сразу после процесса замораживания при температуре минус 30 °С оказались в 2 раза больше, чем при других рассматриваемых параметрах. Органолептические показатели грибов в процессе размораживания сразу после заморозки при всех температурных режимах не изменились. Структура грибов была упругой, не влажной. Определены органолептические показатели грибов вешенки в процессе хранения в течение 2 месяцев при температурах минус 30 °С, минус 60 °С и минус 25 °C. Было установлено, что хранение при температурных режимах минус 30 °С и минус 25 °С очень сильно влияет на органолептические показатели грибов вешенки, ее текстура была мягкой и водянистой. Температурный режим хранения минус 60 °С практически не показал никаких существенных изменений в органолептических показателях данного вида продукции.
Экспериментальные исследования по определению равномерности раскладки клубней картофеля высаживающим аппаратом дискового типа
Authors: Латыпов Ранис Рафкатович
Published: September 2023

В представленном материале приведены аналитические зависимости, которые описывают влияние параметров и режимов работы высаживающего устройства дискового типа на равномерность процесса посадки клубней. Анализ полученных данных приводит к выводу, что на величину равномерности подачи клубней преобладающее влияние имеет угловая скорость высаживающего аппарата. Для установления оптимальных конструктивных и кинематических параметров были проведены эксперименты путем варьирования параметров посадочного устройства, основываясь на теоретических предпосылках и анализе литературы. Таким образом, благодаря исследованию технологии посадки определены факторы, которые влияют на рабочий процесс, такие как угловая скорость ω, которая варьируется в зависимости от поступательной скорости агрегата V и расстояния k между клубнями картофеля в борозде. В качестве критерия оценки была взята равномерность раскладки клубней картофеля. Согласно произведенным расчетам, были установлены оптимальные параметры для высаживающего аппарата дискового типа. Количество ячеек на дисковом аппарате равно 8, поступательная скорость V = 8 км/ч, глубина посадки а = 2–3 см, угловая скорость высаживающего аппарата ω = от 6,5 до 7,5 с–1 обеспечивают необходимое равномерное размещение клубней картофеля при интервале 0,25 м между соседними клубнями. Представлена модель объекта исследования второго порядка процесса посадки клубней, показаны графики поверхности отклика равномерности P от угловой скорости, скорости движения агрегата и глубины посадки. Таким образом, получены аналитические зависимости качества раскладки клубней от режимов работы и параметров высаживающего аппарата. Посадка картофеля экспериментальным высаживающим аппаратом дискового типа обеспечивает размещение до 80 % клубней в пределах необходимого допуска, прочие 20 % размещены свыше допуска до 10 см.
Education of Montenegrins in the Russian Empire as a Tool of Political and Cultural Influence (By the Example of the Activities of the MFA and slavic charity committees)
Authors: Khlebnikova V.B.
Published: September 2023

The article is dedicated to the issue of the participation of the officials and public organizations of Russia in the selection of candidates for education in our country among Montenegrin youth in schools and higher educational institutions. Russian officials were interested in creating a number of specialists in the Slavic lands of the Balkan Peninsula, connected with Russia, who knew and loved Russian culture. Today, such a policy is called “soft power”, and in the XIX and early XX centuries this was a manifestation of pragmatism and strategic calculation in the foreign policy of the empire. Montenegro, which received international recognition after the Berlin Congress of 1878, became a privileged partner and client of Russia. Monarch Nikola Petrovich managed to convince the Russian government that in case of military complications in the Balkans, the Montenegrins would be able to assist Russia in the hostilities. In the last third of the XIX — early XX centuries Russian autocracy paid substantial subsidies to the Montenegrin authorities for the modernization of the state apparatus and the armed forces. Benefits were constantly increased and added up to huge sums. However, the ruler of Montenegro turned out to be an obstinate ward, inclined to forget about the support provided and ignore the political recommendations of the Russian tsar and his entourage. At the beginning of the twentieth century relations between the two countries were strained, and the behavior of Nikola Petrovich often seemed unpredictable. He easily broke his own promises, from time to time he showed a willingness to change Russian patronage for the friendship of Western Europe. Many Russian diplomats and public figures saw a way out of this impasse in preparing as many highly educated specialists as possible for Montenegro, who would join the political elite of the principality and become more reliable allies than the greedy older generation. Moreover, in Montenegro, which had recently switched from a tribal way of life to state life, there was neither a complete secondary school in the European sense, nor higher educational institutions. The calculations of the Russian leadership were only partially justified. However, in this small Balkan country, graduates of Russian educational institutions, sincerely grateful and devoted to Russia, did live and work.
A child/student with a severe intellectual disability in the Polish education system(with particular emphasis on inclusive education)
Authors: Zaorska Marzenna
Published: September 2023

The article describes the issue of the rights of every human being, with particular emphasison the rights of people with disabilities, including the right to education in principle.On the basis of the analysis of the rights of people with disabilities, the situation of inequalitiesin access to education for children, adolescents, people with a deep intellectualdisability, who until now do not have the status of a student in Poland, but only the statusof a pupil, participant in the so-called rehabilitation and educational classes. This inequalityby the educational authorities is generally justified by the specificity of the developmentand psychophysical and psychosocial functioning of these people and the lack of theso-called core curriculum. In view of the above, an attempt was made to present possibleactivities for the education of children and adolescents with a deep intellectual disabilityin the status of a student, focusing not so much on the field of special education, but onthe field of inclusive education.
Pulmonary artery sling: A rare congenital anomaly masquerading as asthma in a one-year-old male patient
Authors: Karaçelik Mustafa
Published: September 2023

Pulmonary artery sling is a rare congenital vascular anomaly that results in the abnormal development of the left pulmonary artery. This case report describes a one-year-old male patient with a history of respiratory issues who was initially treated for suspected infantile asthma. However, further investigation revealed a diagnosis of pulmonary artery sling, a rare congenital vascular anomaly that can cause airway and esophageal compression. The patient underwent surgical treatment to correct the abnormality. This case emphasizes the importance of considering pulmonary artery sling as a potential diagnosis in patients with respiratory symptoms and highlights the need for prompt diagnosis and treatment to prevent potential complications.
Bilateral giant aneurysms of the carotid artery in one patient
Authors: Keleş Ercan
Published: September 2023

Extracranial carotid artery aneurysms are uncommon, life-threatening diseases typically resulting from atherosclerosis. In this case report, a 32-year-old male patient with a bilateral carotid artery aneurysm is presented. After the aneurysmectomy, Dacron graft interposition was applied to the right carotid artery. It was attempted to manage the complications that developed in the postoperative period. These patients require a more detailed and multidisciplinary approach, both intraoperatively and postoperatively.
Profitability of high value crops with organic nitrogen sources under rice (Oryza sativa) based cropping sequence
Authors: YADAV S K , BABU SUBHASH , YADAV M K , SINGH YOGESHWAR , SINGH KALYAN
Published: September 2023

A field experiment was conducted during 2005-06 and 2006-07 at Campus Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi to identify a suitable high value cropping sequence with organic nitrogen sources under rice (Oryza sativa L.) based cropping system. The experiment was laid out in split plot design with three replications. Seven rice based cropping sequences, viz. rice-potato-onion; rice-green pea-onion; rice-potatocowpea (green pod); rice-green pea-cowpea; rice-rajmash (green pod)-onion; rice-rajmash-cowpea and rice-maize (green cob)-cowpea were assigned to main plots and three organic treatments (control; 100% RDN through organic manure along with biofertilizers and 100% RDN through organic manure alone) were allocated to sub plots. Among the cropping sequences, rice-potato-onion gave the highest rice grain equivalent yield (35.57 tonnes/ha), maximum net return (Rupees 268 656/ha), profitability (Rupees 738/ha/day) and labour employment generation (469 man days/ha/year). However rice yield and soil fertility status was not significantly affected by cropping sequences. Application of 100% recommended dose of through organic manure along with biofertilizers (Azotobacter and PSB) had the highest rice equivalent grain yield (35.31 tonnes/ha), production efficiency (96.74 kg/ha/day), net monetary return (Rupees 292 454/ha), profitability (Rupees 803/ha/day) and labour employment generation (419 man days/ha/year). Inclusion of pulses in sequence with proved superior due to its viable favorable effect on soil fertility. Thus organic nitrogen nutrition with biofertilizers had the highest rice equivalent grain yield, production efficiency, net monetary return and profitability.
Bio-chemical amelioration effects on physico-chemical dynamics of sodic soils under rice (Oryza sativa) –wheat (Triticum aestivum) cropping system
Authors: SINGH RANBIR , YADUVANSHI N P S , SINGH K N , KUMAR SUSHIL , MISHRA V K , SINGH Y P , SHARMA D K
Published: September 2023

The effect of dhaincha (Sesbania aculeata) as first crop on physico-chemical dynamics and productivity of “B” class sodic soils was assessed on farmer’s field under rice-wheat cropping system to generate the knowledge of sodic soil management for increasing the soil and crop productivity for sustainable crop production in sodic soil environment. The experiment was laid out in randomized block design at ten sites having six treatment combinations of different doses of gypsum and green manuring with sesbania under two cropping sequences, i e sesbania-rice (Oryza sativa L.) -wheat (Triticum aestivum L.) and rice-wheat. Cultivation of sesbania with gypsum significantly decreased the surface soil pH from 9.3 to 8.6 and increased the hydraulic conductivity from 0.3 × 10-3 to 3.7 × 10-3 cm/hr and buildup of soil organic matter by increasing organic carbon content from 0.20 % to 0.22 % through growing of sesbania. Sesbania green manure also increased the available water content in the soil system, which enhanced soil moisture availability for longer period. As a result, rice crop yield increased by 16.2 % in sesbania-rice- wheat cropping system in comparison to rice–wheat cropping sequence because of synergistic effect of sesbania with gypsum. Consequently, residual effect of sesbania green manuring alone and in combination with gypsum significantly enhanced the wheat grain yield by 42.5 % and 72.5 % and 80% in T4, T5 and T6 treatments respectively during first year in sesbania–rice-wheat cropping sequence as compared to control. In consecutive second year, rice and wheat grain yields further enhanced by 8.1 % and 2.71% respectively, under sesbania –rice -wheat than that of rice –wheat cropping sequence. Under sesbania- rice- wheat and rice-wheat-sesbania cropping sequence, rice and wheat grain yield were similar. Hence, inclusion of Sesbania aculeata as green manure either before or after rice-wheat cropping sequence is equally better to improve the soil physical dynamics and crop productivity of ‘B’ class sodic soils in Indo-Gangetic region of Uttar Pradesh.
Marker assisted backcross selection for genetic removal of lipoxygenase-2 from popular soybean (Glycine max) variety JS 97-52: Parental polymorphism survey and hybridity validation
Authors: RAWAL REENA , KUMAR VINEET , RANI ANITA , GOKHALE S M , HUSAIN S M
Published: September 2023

Lipoxygenase-2 is the prime contributor to the off- flavour associated with the soy products. With the aim to introgress null allele of lipoxygenase-2 into popular soybean variety JS 97-52 through marker assisted backcross selection (MABC), parental polymorphism was surveyed for JS 97- 52 (recipient parent) and PI 596540 (the donor of null allele of lipoxygenase-2). A total of 264 SSR markers dispersed across 20 linkage groups were screened. Of these, 130 SSR markers showed polymorphism. SSR markers Satt522 and Satt656 reported to be in the vicinity of Lox2 locus were found to be polymorphic for JS 97-52 and PI 596540 and were used for confirming true F1 and BC1F1 plants. The polymorphic SSR markers identified in the study would be utilized for retrieving the genetic background of JS 97-52 in the backcross generations.
Genetic variability and character association in bread wheat (Triticum aestivum)
Authors: MEENA H S , KUMAR DINESH , PRASAD S RAJENDRA
Published: September 2023

Forty seven released varieties of common bread wheat (Triticum aestivum L.) were evaluated during rabi 2007-08 to 2010-11 for four years under irrigated conditions at Directorate of Seed Research, Mau. Analysis of variance on 12 quantitative characters was carried out and pooled analysis was conducted over the seasons. The mean, range, phenotypic, genotypic and environmental variance, genotypic and phenotypic coefficient of variation, heritability in broad sense and genetic advance were calculated. Path coefficient analysis was carried out using correlation coefficients to establish the inter-relationship and direct and indirect contributions of component traits towards grain yield. Analysis of variance revealed the considerable amount of genetic variability in genotypes for all the traits. High genetic advance (GA) coupled with moderate to high heritability for grains/ spike and 1000-seed weight indicated the effectiveness of selection for these traits. Number of grains/spikelet, grain yield/spike and effective tillers/m2 were positively associated with grain yield. Similarly, effective tillers/m2, number of grains/spike and grain yield/spike had higher phenotypic and genotypic direct effects on grain yield/m2, revealing that indirect selection for these traits would be effective in improving the grain yield. The higher direct and indirect contribution of grains/spike, tillers/m2, 1000-seed weight, spikelets/spike and grains/spikelet towards total grain yield would be of great use for indirect selection for yield improvement.
Evaluation and correlation for growth, yield and quality traits of ridge gourd (Luffa acutangula) under arid conditions
Authors: CHOUDHARY B R , KUMAR SURESH , SHARMA S K
Published: September 2023

Landraces of ridge gourd [Luffa acutangula (Roxb.) L.] are spread over a wide range of environments in India and their fruits are consumed as vegetable. The dry fruits of six commonly grown genotypes were collected from different parts of Rajasthan. The collected materials were evaluated during summer season of 2011 and 2012 under hot arid conditions of western Rajasthan for growth traits, flowering, yield, yield components and quality traits. The evaluated genotypes showed significant variation for most of these traits, except pH of flesh. Average number of fruits per plant was the highest in AHRG 29 (21.75) and the lowest in AHRG 27 (17.30), which had the highest fruit length (27.26cm), fruit diameter (5.13cm), ovary length (8.06 cm) and fibre content (1.96 g/100g edible portion). The highest fruit hardness was also recorded in AHRG 27 (4.91 kg/cm2), whereas the lowest in AHRG 29 (3.54 kg/cm2). Significant correlation coefficients among growth, flowering, yield, yield traits and quality traits were found. The marketable yield/plant had positive and highly significant correlation with fruit weight (0.834) and number of marketable fruit/plant (0.624) at phenotypic level. The results of this study could be used in breeding programs for improving local landraces of ridge gourd grown in Rajasthan, India.
Effect of nursery raising practices of seedlings and phosphatic fertilizer management in tomato (Solanum lycopersicum) crop on growth and yield
Authors: KOTUR S C
Published: September 2023

The raised bed seedlings produced significantly higher fruit yield of 20.4% (71.147 tonnes/ha) than the tomato grown from pro-tray seedlings (59.361 tonnes/ha). Banding of superphosphate along with other fertilizers at 5cm depth showed significantly higher yield, dry matter production, P content as well as P uptake. The fruit yield and dry matter obtained were the highest at 80% recommended P dose. In the tomato grown from raised bed seedlings, 82.706 tonnes/ ha fruit yield was obtained that was 49.3% higher than 55.383 tonnes/ha of tomato grown from pro-tray seedlings when 80% P dose was banded at 5cm depth.
Interpretasi Penampang Seismik Untuk Identifikasi Struktur Geologi Sebagai Perangkap Hidrokarbon Pada Lapangan Semberah, Cekungan Kutai
Authors: Asrim
Published: September 2023

Interpretasi penampang seismik merupakan suatu analisis yang dilakukan untuk mengetahui informasi geologi bawah permukaan. Analisis penampang seismik dapat diaplikasikan untuk mengetahui adanya perangkap hidrokarbon. Lapangan Semberah adalah salah satu lapangan migas yang ada di Cekungan Kutai. Sebagian besar sumur-sumur yang ada di lapangan ini tersebar dengan arah timur laut-barat daya., yang mana salah satu lokasi pengembangan lapangan ini terletak pada bagian utara. Jumlah sumur di sekitar lokasi target penelitian ini masih minim, sehingga perlu dilakukan analisis data seismik secara terperinci pada lokasi tersebut. Tujuan penelitian ini yaitu untuk mengetahui adanya struktur geologi yang berpotensi sebagai perangkap hidrokarbon pada lokasi target. Data yang digunakan dalam penelitian ini yaitu penampang seismik yang telah diolah hingga tahap post stack time migration. Tahapan interpretasi penampang seismik pada penelitian ini meliputi well seismic tie, picking horizon, analisis dan kesimpulan. Berdasarkan hasil penelitian yang telah dilakukan diperoleh hasil adanya struktur antiklin yang berpotensi sebagai perangkap hidrokarbon.
Teoria da complexidade e pensamento complexo na prática da construção do conhecimento científico: 10 lições para produção e ensino em ciências
Authors: Macêdo Luiz Carlos Aires de , Macêdo Rosana Karla Aires de
Published: September 2023

Este trabalho apresenta um pequeno recorte da vasta obra do francês Edgar Morin sobre a concepção de uma nova forma de produzir e ensinar ciência a partir de sua Teoria da Complexidade e do Pensamento Complexo, na qual este autor é um dos mais influentes, e outras ideias associada diretamente a estes conceitos. Através de uma revisão bibliográfica de obras consagradas deste autor, sem a pretensão de esgotar ou apresentar de forma profunda as teorias e ideias do Morim, este texto busca sintetizar lições que podem ser aplicadas na prática da produção do conhecimento científico e do ensino em ciência voltado aos dias de hoje.
Educação e interculturalidade: Avanços e retrocessos na educação escolar indígena para Amazônia
Authors: Barbosa Vaniely Corrêa , Foster Eugênia da Luz Silva
Published: September 2023

O trabalho fomenta o combate a invisibilidade indígena, assim como, influi na valorização de sua cultura. Pretende compreender os avanços e/ou retrocessos no âmbito da educação escolar indígena, no contexto das políticas de ações afirmativas e da legislação brasileira, com o objetivo de verificar quais destas ações e legislações, contemplam uma educação diferenciada, bilíngue e intercultural. Para possibilitar o alcance do objetivo traçado, realizou-se uma pesquisa qualitativa reflexiva, com a utilização do levantamento bibliográfico. Os resultados demonstraram que somente a partir da década 1980, diante do reconhecimento de uma educação homogeneizante, os indígenas conquistaram, depois de muitas lutas em movimentos e organizações sociais, a visibilidade necessária para elaboração de políticas de ações afirmativas. Constatou-se também, que a Constituição Federal de 1988, juntamente com as leis e resoluções ulteriores, exprimem a ambição por uma liberdade cultural, educacional, econômica, social, linguística e territorial dos povos indígenas.
Encouraging the improvement of the performance of dairy cattle of family farmers
Authors: Santos Ângelo Luís Silva , Tose João Pedro Rocha , Freire Ana Izabella , Souza Filipe Bittencourt Machado de , Araújo Nicolas Oliveira de
Published: September 2023

As higher yields are reached, it is noticed that dairy farming has been achieving high rates of return on invested capital and higher remuneration than the producer could earn if he were working in large urban centers. It is possible to perceive that the dairy activity is, within the national agribusiness, an important source of income and employment. Promoting the development of this activity is one of the main issues that move agricultural research. To achieve this feat, it is essential to combine technology with the change of attitude and thinking of the producer. The confidence in the efficiency of the technological solutions proposed is the differential in this process. Artificial insemination is a technique by which sperm collected from the male is processed, stored and artificially introduced into the reproductive tract of the female, to fertilize them. It is one of the important techniques available for genetic improvement of domestic animals. It presents as advantages the improvement of the herd, in less time and at a lower cost, with semen of proven superior breeders for the production of milk. The consideration of the prevalence of diseases in the dairy herd is also part of the identification of the critical points to improve animal production. Therefore, measures of control, diagnosis, treatment and awareness of producers are crucial for the maintenance of an adequate degree of production of the animal and the greater will be the milk production.
Latin american economic integration: A preliminary comparative analysis of the contributions of Celso Monteiro Furtado and Ruy Mauro Marini
Authors: Andrade Gustavo Perez Pereira
Published: September 2023

Since the 1960s, around the ECLAC, there have been several debates and theoretical confrontations, in which relevant themes about Latin America were discussed. Among these, the regional integration, discussed by several authors, stands out. In this way, this paper intends to make a bibliographical review based on a brief comparative analysis of the contributions of Ruy Mauro Marini and Celso Furtado on the question of regional integration. The research aims, therefore, to consider the divergences and / or convergences of these thinkers, trying to understand how is treated the issue of regional integration while developing their thinking. We will focus here specifically on the study of the works of the authors, for the understanding of this question, those published between the 1960s and the 1990s, problematizing both authors during this period.
Socioeconomic Development of the Immediate Region of Guarapuava from 2015 to 2020
Authors: Vecchia Rachel Virmond Rauen Dalla
Published: September 2023

The delimitation of regions allows studies to be carried out, enabling a better characterization of the municipalities that comprise it, helping to identify inequalities and potentialities, facilitating the development of public policies to improve the economic and social situation of the region. Thus, the present study aimed to analyze the socioeconomic performance of the municipalities in the Immediate Region of Guarapuava (RIG) in Paraná, based on the indicators of the IPARDES Index of Municipal Development (IPDM) in the period from 2015 to 2020. To characterize the productive structure and the socioeconomic profile of the municipalities of the RIG in this period. An exploratory and descriptive research with a qualitative approach was carried out, supported by bibliographical research for literature review and secondary data from IPARDES, IBGE and RAIS for data collection, tabulation, and analysis, using descriptive statistics in the presentation of these. The results showed that the region is composed of small municipalities and most of them have agriculture as the most representative activity in the GDP. During the study period, the municipalities showed advances in development in health and education, but not in terms of employment and income and, therefore, this was the index that weighed most negatively on the dynamism of the development of municipalities in the region, which imposes the observation that the region has low performance in terms of employment and income and needs public policies aimed at meeting this purpose.
Acceleration of external iterations using Chebyshev extrapolation in neutron diffusion theory
Authors: Pontes Andrey Silva , Araujo Lenilson Moreira
Published: September 2023

This research aims to analyze, compare, and validate the performance of Chebyshev polynomials applied to the acceleration of convergence of external iterations through extrapolation of the fission source. To solve the system of equations generated from the discretization via finite element method of the neutron diffusion equation, Crout's method was applied. Chebyshev's extrapolation method was implemented in the FORTRAN programming language. To validate this method, we used the IAEA and Homogeneous Reactor benchmarks, both two-dimensional defined at 2 and 3 energy groups, respectively. The results obtained from the tests with different mesh refinements demonstrate the effectiveness of the acceleration of the external iterations when different values are considered for the Chebyshev iterations, especially when compared to extrapolation via over-relaxation.
Psychosocial Support for Cancer Survivors
Authors: Simhachalam Gurugubelli  , Sai Giridhar Gundepalli
Published: September 2023

Psychosocial issues are significant challenges for cancer survivors after treatment. They impact quality of life, health behaviors, and outcomes. Addressing these issues is crucial as part of survivorship care.
Avances en la descentralización universitaria en Uruguay, período 2008 – 2023
Authors: Brotóns Muró Luis Francisco
Published: September 2023

Se realiza un análisis de la descentralización universitaria en Uruguay durante estos últimos 15 años, partiendo de los resultados de la investigación realizada como tesis doctoral en el año 2008. La presente investigación surge de las recomendaciones que se realizaron en la citada tesis para una mayor y mejor descentralización en Uruguay y se plantean las mismas como hipótesis del presente análisis. Se investiga si ha habido nuevos proyectos de educación universitaria y una mayor cobertura geográfica en el proceso de descentralización. Al mismo tiempo si se han producido acuerdos o partenariados entre los gobiernos locales y las instituciones universitarias en los avances de la descentralización, ya que fue una condición considerada como necesaria para que la misma se desarrollara. Se observa una creciente descentralización de la Universidad de la República, en diferentes etapas y con diferentes propuestas como inicio de la descentralización según el departamento o región, acompañada de un incremento de una oferta más acorde con las necesidades productivas del interior del país a través de un nuevo proyecto universitario, totalmente inédito y diferente debido al cambio que supuso para la educación pública universitaria en Uruguay. Aunque la incidencia es de menor impacto por su tamaño y menor cobertura, se analiza también la descentralización de las universidades privadas. Cada propuesta descentralizadora tuvo resultados diferentes en cuanto a su desarrollo y crecimiento en el marco de la política de descentralización, pero las mismas permiten comprobar las hipótesis planteadas.
Uso de la realidad aumentada para mejorar la motivación en la asignatura de ciencias naturales
Authors: Aquino Ericka , Avalos Andrea , Avello Martínez Raidell
Published: September 2023

La realidad aumentada está siendo estudiada por investigadores educativos por su potencial para mejorar tanto la motivación de los estudiantes como la adquisición de los conocimientos, contribuir a desarrollar la imaginación y la creatividad. El objetivo del presente trabajo es evaluar la motivación que la tecnología de realidad aumentada provoca en los estudiantes de la Escuela Educación Básica Particular Las Cumbres en la materia de ciencias naturales luego de la implementación de un plan de actividades. El estudio adoptó un diseño descriptivo con un enfoque observacional, empleando un diseño transversal. La población objetivo comprende a los estudiantes de los grados 8vo, 9no y 10mo de la Escuela Educación Básica Particular Las Cumbres durante el año 2023. La muestra seleccionada, consistente en 32 estudiantes. Para la recolección de datos se utilizaron dos instrumentos: una encuesta dirigida a docentes para evaluar su conocimiento en tecnologías de Realidad Aumentada y necesidades de capacitación, y el cuestionario IMMS adaptado. El análisis de datos se realizó con SPSS y Excel, involucrando análisis descriptivos y técnicas no paramétricas como el análisis de Kruskal-Wallis y la prueba U de Mann-Whitney para evaluar las diferencias en motivación entre diferentes grados y géneros. En conjunto, los resultados de este estudio respaldan la idea de que el uso de herramientas de Realidad Aumentada puede mejorar significativamente la motivación de los estudiantes lo cual impacta directamente en el proceso de enseñanza-aprendizaje en la asignatura de Ciencias Naturales.
The Effect Of Business Risk, and Financial Risk on Profitability in Mining Sector Companies Listed on The Indonesia Stock Exchange (IDX) for The 2018-2021 Period
Authors: Duru Jesyca Ireyne , Sucahyo Usil Sis
Published: September 2023

The purpose of this study is to determine how much influence Total Asset Turnover, Debt to Equity Ratio, has on Return On Equity in mining sub-sector companies listed on the Indonesia Stock Exchange (IDX) for the 2018-2021 period. The researcaes take a total of 60 Sample is done by purposive sampling technique. This research uses quantitative methods with descriptive analysis techniques using SPSS version 20 software.the data used is secondary data and obtained through the official website of the Indonesia Stock Exchange (IDX) in the form of annual financial statements (www.idx.co.id). Through this research, it was found that Total Asset Turnover had a significant positive effect on Return On Equity in mining sub-sector companies. Meanwhile, the Debt to Equity Ratio has a significant negative effect on Return On Equity in mining sub-sector companies.
Descriptive Research Methods
Authors: Deckert Jennifer , Wilson Margaret
Published: September 2023

Descriptive research provides information based on observation and describes things the "way they are" using surveys, questionnaires, rubrics, interviews, or rankings. As a point of entry for new areas of research, or for new researchers, it can provide important context about a population, question, or condition. Descriptive research uses qualitative or quantitative data and includes case studies and case series, developmental research, normative research, longitudinal studies, and epidemiological studies.
Qualitative Methodologies
Authors: Mainwaring Lynda , Aujla Imogen
Published: September 2023

This chapter provides an overview of the key features of qualitative research in a dance science context. It is designed to give readers a broad understanding of the ontological and epistemological roots of qualitative research and provide them with practical strategies and techniques they can use when conducting their own research studies. The chapter examines why and how researchers may adopt qualitative methodologies and the value of doing so in order to capture unique and subjective experiences from a first-person perspective. The strengths and weaknesses of qualitative research are identified as are ethical considerations particular to this approach. Various types of methods are defined including generic qualitative research, ethnography, phenomenology, grounded theory, narrative enquiry, and case study, as well as more recent methodological approaches such as action research and mixed methods. Procedures for conducting and analyzing qualitative research are outlined. Strategies to enhance the quality of research--often known as trustworthiness in constructivist paradigms--are described.
Fluorine-containing ferroelectric polymers: applications in engineering and biomedicine
Authors: Kochervinskii V. V. , Gradov O. V. , Gradova M. A.
Published: September 2023

Highly polar fluorine-containing ferroelectric polymers based on vinylidene fluoride refer to the class of electroactive polymers suitable for various engineering applications. Under usual crystallization conditions, polycrystalline texture is formed, while after high-voltage polarization, it is transformed into a non-centrosymmetric structure, which gives rise to high piezoelectric and pyroelectric responses. Such materials can be used for pyroelectric energy conversion. Owing to high impact strength, ferroelectric polymers can serve as materials for alternative energy sources that convert dynamic impact energy into electricity. The non-linearity of electric response (owing to ferroelectricity) and high breakdown fields offer opportunity of using them in capacitive charge storage devices. The intense dynamics of the amorphous phase provides a rapid discharge of the stored energy into an external circuit. In view of the considerable fraction of the amorphous phase ( 50%) in fluorine-containing ferroelectric polymers and high dielectric permittivity of the amorphous phase, it is possible to change the system entropy by applying an electric field. In the case of pulsed field, this provides a temperature drop; therefore, these materials (especially as composites) are promising for the design of solid-state refrigerators. The high thermoplasticity of these polymers is useful for the design of sensors e.g., microphones) with a patterned active membrane surface and enhanced characteristics. Biocompatibility and low acoustic impedance (close to the impedance of biological tissues) accounts for the possibility of using these polymers as biosensors. When domains are present in a ferroelectric film, strong local electric fields appear, which can affect the activity of living cells. Using the direct and reverse piezoelectric effect, it is possible to stimulate and control the functions of various tissues, including the nervous tissue.
 The bibliography includes 463 references.
Synthesis of vinyl selenides and tellurides: an updated review
Authors: Hellwig P. S. , Goulart H. A. , Abenante L. , Lenardão E. J. , Perin G.
Published: September 2023

Over the past years organochalcogen compounds have attracted the attention of many research groups due to their powerful chemical and biological activities. Vinyl selenides and tellurides have proved to be useful in organic synthesis as important tools in different reactions. Noteworthy, this important class of compounds has been shown to possess important biological assets, making them promising drug candidates. Herein, we present a comprehensive and updated review on the state of the art of the available methods developed in the last seven years to obtain vinyl selenides and vinyl tellurides. More than 130 articles were accessed, and their contents were critically revised through three main sections, highlighting the metal-free and metal-promoted synthesis of this valuable class of compounds.
 The bibliography includes 139 references.
Antiviral properties of diterpenes and their derivatives
Authors: Yarovaya O. I. , Laev S. S. , Salakhutdinov N. F.
Published: September 2023

The review focuses on low-molecular-weight natural metabolites of the diterpene series and their semi-synthetic analogues, which exhibit antiviral activity. Data on the antiviral activity of both plant extracts and their components are provided. The structures of biologically active natural diterpenoids and their derivatives with a pronounced antiviral effect are presented. Mechanisms of therapeutic action of diterpenoids and their derivatives with a pronounced antiviral effect are considered for different viruses. The review summarizes the data over the last 12 years (2011–2022).
 The bibliography includes 183 references.
Synthesis and plasmonic tuning of gold and gold–silver nanoparticles
Authors: Khlebtsov N. G. , Dykman L. A. , Khlebtsov B. N.
Published: September 2023

Plasmonic particles represent a rapidly developing material for nanotechnology. They are used in biomedicine as sensoric, diagnostic and therapeutic agents. Most theranostic applications exploit the unique optical properties of gold or hybrid nanoparticles in which visible or near-infrared light excites localized plasmon resonances. The review discusses the latest advances in the synthesis of the most popular and sought-after nanoparticles such as gold nanospheres, nanorods, nanoshells, nanocages and nanostars and also gold–silver nanorods and nanocuboids. The consideration is focused on the design principles of particle size, shape and structure, which provides for desired tuning of optical properties such as plasmon resonance wavelength and absorption and scattering cross-sections. The optimal parameters of the particles for the use in the photothermal and photodynamic therapy, surface-enhanced Raman scattering and catalysis are discussed.
 The bibliography includes 294 references.
Di- and polyazides. Synthesis, chemical transformations and practical applications
Authors: Tsyrenova B. D. , Lemport P. S. , Nenajdenko V. G.
Published: September 2023

The chemistry of organic di- and polyazides has been extensively developed in recent years. Methods for the synthesis of 1,1- and 1,2-diazides are diverse and include stoichiometric, catalytic, photochemical and electrochemical approaches. These organic compounds are highly reactive and are involved in a wide range of reactions, from thermal transformations to click chemistry. Of particular attention are transformations, in which one azido group undergoes intramolecular cyclization, while another azido group remains intact and can participate in further chemical transformations. Tri- and polyazides are investigated as precursors for the production of high-energy materials and the synthesis of high-molecular-weight compounds. This review addresses the methods for the synthesis of organic compounds containing two or more azido groups and their chemical transformations. Aliphatic, aromatic and heteroaromatic diazides are considered. Specific transformations characteristic of geminal and vicinal diazides, which differ from the reactions of monoazides, are described. Examples of the practical application of di-, tri- and polyazides are highlighted.
 The bibliography includes 355 references
Recent advances in the chemistry of two-carbon nitro-containing synthetic equivalents
Authors: Lyapustin D. N. , Fedotov V. V. , Ulomsky E. N. , Rusinov V. L. , Chupakhin O. N.
Published: September 2023

To date, nitro-containing compounds form one of the most important classes of organic compounds. The chemistry of these molecules attracts attention primarily due to their use as high-energy reagents and drugs. Also, the introduction of a nitro group is a popular synthetic strategy for constructing new organic molecules. The present review summarizes the latest research findings of compounds bearing a nitro group on a two-carbon moiety such as aminonitroethylenes, α,α-bis(alkylsulfanyl)nitroalkenes and their amino derivatives, α-nitroketones, alkyl nitroacetates and nitroacetonitrile. The literature data are systematized according to the type of chemical reactions such as reactions between nucleophiles and electrophiles, various cyclization reactions, reactions at the C–H bond, etc. The reactivities of the said nitro compounds and the conditions of chemical transformations are compared to assess the prospects of their application.
 The bibliography includes 314 references.