bluuebunny/crossref_metadata_2025 huggingface dataset:
Predicción de los cambios ambientales en el ecosistema del valle de Cuatro Ciénegas mediante la “KSIM”
Authors: Buendía-Espinoza Julio César , Exebio-García Adolfo Antenor , Martínez-Ochoa Elisa del Carmen
Published: May 2022

El ecosistema desértico del valle de Cuatro Ciénegas, Coahuila, México, con sus especies endémicas y humedales Ramsar (número 734) que evidencian su relevancia ecológica y justifican la importancia de su conservación, ha sido ambientalmente perjudicado por la explotación del agua superficial y subterránea para riego agrícola. Por lo cual, algunas de sus pozas han disminuido el nivel de agua, llegando a la desecación. Esta investigación tiene como objetivo simular los cambios ambientales generados por el proyecto de modernización de riego en el ecosistema de Cuatro Ciénegas, mediante la SIMulación K (KSIM) para predecirlos en los escenarios tendencial (sin proyecto) y contextual (con proyecto) por un período de 30 años. Las variables Aire, Flora y Fauna, Hidrología, Sociedad y Suelo fueron definidas por expertos que colaboraron en el proyecto, y sus valores iniciales asignados con base en su estado de conservación actual. Los resultados en el escenario tendencial muestran que la calidad ambiental de Suelo, Hidrología y Sociedad será afectada, en cambio Aire y Flora y fauna permanecerán constantes. En el escenario contextual, la calidad ambiental de Hidrología, Sociedad y Flora y fauna será beneficiada; por el contrario, la del Suelo y Aire será afectada de forma temporal en menor grado que la tendencia actual. Finalmente, la KSIM permitió establecer las diferencias entre escenarios de cambio, como estrategia para priorizar acciones y realizar gestiones de conservación y aprovechamiento sustentable de los recursos naturales de este valle donde las actividades humanas generan impacto ambiental.
A Comparison of Dexmedetomidine and Fentanyl as Co-induction Agents to Propofol for Insertion of Proseal Laryngeal Mask Airway: A Randomised Clinical Study
Authors: Pal Rashmi , Prem Koti , Arora KK , Gill Rashpal Singh
Published: May 2022

Introduction: The Supraglottic Airway Devices (SAD) are bridges between a face mask and Endotracheal Tubes (ETT). Various induction agents like sevoflurane and propofol were used till date for smooth insertion. Propofol causes dose-dependent cardio-respiratory depression while opioids may increase the haemodynamic instability. Aim: To investigate the role of dexmedetomidine and fentanyl as co-induction agents to propofol for Proseal Laryngeal Mask Airway (PLMA) insertion conditions. Materials and Methods: The present study was a randomised clinical study in which 60 patients of American Society of Anaesthesiologists (ASA) grade I-II, 20-60 years of age were divided into two groups. Group P+D received 2.5 mg/kg propofol + 1 µg/kg dexmedetomidine while Group P+F received 2.5 mg/ kg propofol + 1 µg/kg fentanyl. A Bispectral Index (BIS) value of 50-45 was taken as desired end point for insertion of PLMA. Induction time, insertion time, ease of insertion, number of attempts, total propofol requirement and various hemodynamic changes were taken into consideration. Results: Mean induction time with dexmedetomidine (8.28±0.81min) was lower as compared to that with fentanyl (9.28±0.83 min) (p<0.0001). Total propofol requirement was also less with dexmedetomidine (93.66±15.64 mg) as compared to that with fentanyl (135.8±10.95 mg). Dexmedetomidine also provided better insertion score for PLMA (p=0.044) with less number of attempts (p=0.044), when compared with fentanyl. Conclusion: Dexmedetomidine, as an adjuvant to propofol can be considered as an attractive choice for insertion of PLMA.
Analysis on the Influencing Factors of OFDI by Jiangsu Province in China
Authors: Xinyue Yu , Jifeng Zhang , Hongrui Wang
Published: May 2022

As a big economic province in China, Jiangsu takes the lead in opening to the global market. Both the stock and flow of OFDI in Jiangsu are among the best in China, but studies have shown that the imbalance of investment between inter cities has affected the further development of Jiangsu's OFDI. Using spatial econometric analysis method, this paper constructed a spatial lag and spatial error model to study the spatial distribution and influencing factors of OFDI in all cities of Jiangsu province from 2008 to 2018. The results show that: the overall OFDI of all cities in Jiangsu province maintained a rapid growth, showing an upward trend; There are significant differences and positive spatial correlation among different cities. There is a spatial crowding out effect of OFDI. The OFDI is positive with GDP, the number of industrial enterprises, the volume of export trade and IFDI.
Small- scale Farmers’ Perception of Climate Change Impact and Variability in Shaki Community of Oyo State, Southwest Nigeria
Authors: E. Ebiendele Peter, , I. Otobo Sylvester, , Osoria Asuelinman
Published: May 2022

Climate change and variability have been a source of contention and debate in many parts of the developing world for many years. Different people have different perspectives on climate change and variability. This study examines small-scale farmers' perceptions on climate change impacts and possible adaptation strategies in the Shaki community of Oyo State. The population comprises of two hundred and forty (240) small scale holders’ farmers in the Shaki community of Oyo state, with sample population size of one hundred and fifty (150) randomly selected with non – probability (judge-mental) sampling technique. Survey research design was adopted for the study. Descriptive statistics and chi-square tests were used to analyze the data collected. The results from the analyzed data reveals among others the following, 74.7 percent of farmers were aware of climate change prior to the time this survey was conducted. Furthermore, 92 percent of farmers claimed to have noticed an increase in temperature, while 47.3 percent reported a decrease in rainfall. The farmers' perceptions of temperature and rainfall were supported by trend analysis, which revealed that total rainfall was decreasing by 2.1mm per year while temperatures were increasing by 0.029 degrees Celsius per year. They responded to the changing climate by implementing a variety of climate-adaptive strategies, including the planting of drought-resistant and pest/disease-resistant crops, government assistance, the use of Nigerian Meteorological Agency (NIMET) seasonal rainfall prediction forecasts, and mulching to reduce water loss. However, the study found a positive and significant relationship between farmers' socio-demographic characteristics and their perceptions of climate change, implying that only farmers' age, education level, and annual household income had a significant impact on their climate change perceptions.
An Improved Two-states Cyclical Dynamic Model for Plastic Waste Management
Authors: Addor John Awuah , Wiah Eric Neebo , Alao Felix Illesanmi
Published: May 2022

The panacea to the global challenge of plastic waste management is the transition towards plastic circular economy, which can be sustained through tailor-made management strategies. However, cutting-edge strategic solutions are constrained by inadequate data due to inadequate plastic-based predictive models. This paper presents an improved version of an existing two-state cyclical dynamic closed (CDC) model. The CDC model was formulated using a homogeneous linear system of ordinary differential equations (ODEs) and was modified by introducing a separation target which plays an essential role in determining both quantity and quality of recycled plastics. The Laplace transforms technique was the main analytic solution technique used. Values of the parameters were computed using the global plastic data applied for the existing CDC model, and with a technique termed the nth-order product derivative proximity, alternating pairs of initial values were selected each for the global annual plastic production and the global annual plastic waste generation. The validation process of the new CDC model was accomplished using the root mean squared error (RMSE) and the mean average percentage error (MAPE), which are measures of the model’s predictive power. Comparatively, RMSEs of the new CDC model were smaller than the RMSEs of the existing CDC model. MAPEs for the new CDC model were 6.5%  and 7% (as against 13% and 18% in the existing model) respectively for the global annual plastic: production and waste generation, indicating that the new model predicts with 93.5% and 93% degrees of accuracy respectively for the global annual plastic: production and waste generation. Therefore, the new CDC model has outperformed the existing CDC model in terms of predictive power, and thus, establishing the new CDC model as an improved version of the existing one. The model can therefore make impactful policy decisions for sustainable plastic waste management thereby aiding to achieve the transition towards circular economy in plastic waste management.
Genetic Diversity Studies using D2 Statistics in Pearl Millet [Pennisetum glaucum (L.) R. Br.] Genotypes under Aridity
Authors: Shekhawat Komal , Sharma Nemichand , Gupta P. C.
Published: May 2022

The present study was carried out to estimate the genetic diversity for yield and its contributing traits in pearl millet (Pennisetum glaucum (L.) R. Br.) Genotypes. The experimental material was consisting of 32 pearl millet released genotypes. The experiment was laid out in Randomized Block Design with three replications during Kharif 2021 under rain fed conditions. The observations were recorded on ten randomly selected plants from each genotype in each replication for nine different quantitative traits. Based on D2 values, 32 genotypes were grouped into 3 clusters. Among 3 clusters, cluster I had more number of genotypes (23) followed by cluster II (6), and cluster III (3). The maximum intra cluster distance was observed in cluster III (12.2). The highest inter cluster distance was observed between cluster III and cluster I (18.29) followed by cluster III and cluster II (16.72), and cluster II and cluster I (14.24).The cluster III (49.96) had significant and higher cluster mean for seed yield per plant.
Comparative Evaluation of Industrial Phosphoric Acids Desulfation Capabilities of Limes and Barium Carbonate
Authors: Kthiri Khouloud , Mehnaoui Mohamed , Hidouri Mustapha , Boughzala Khaled
Published: May 2022

Industrial phosphoric acid is an omnipresent product in the food industry and in the production of fertilisers and detergents. The presence of impurities in the raw material results in a relatively charged acid with various chemical species at the expense of its quality and use. These impurities include sulfate ions that precipitate into phosphoric acid during its manufacture. A desulfation is thus necessary. This study focuses on the reduction of free sulfates in phosphoric acid as impurities. This resulted in the use of three different adjuvants: lime, limestone, and barium carbonate. Three initial sulfate levels mainly contained in phosphoric acid were investigated: 2%, 4% and 6%. After experimentation, the comparison between the resulting yields allows considering barium carbonate as the most effective adjuvant. The desulfation efficiency was 95% in a very short stirring time of 15 min, independently of the initial sulphate content of phosphoric acid. The tests carried out with lime and limestone also lead to very interesting desulfation rates for phosphoric acid with an initial sulfate content of 2 or 4%.
Bilateral Ovarian Dermoid Cysts with Persistent Anemia and Thrombocytopenia in an Adult Female: A Rare Case Report
Authors: Chaturvedi Nidhi , Tiwari Neema , Bansal Rani
Published: May 2022

Autoimmune phenomena are commonly encountered in the female population either as the primary disease or in association with conditions like pregnancy or as a part of paraneoplastic syndromes. Exact pathogenesis of such immune reactions may be clearly defined in cases like Grave’s disease, SLE etc or may be secondary to unexplained phenomena .These patients however may manifest as hematological symptoms like anemia and thrombocytopenia, skin manifestations or co existing thyroid issues .Tumors commonly present with autoimmune paraneoplastic syndromes. These can be non-hematological and hematological. Common hematological manifestations we encounter are either ITP or autoimmune hemolytic anemias. Ovarian tumors rarely occur with autoimmune features. There have been documented cases of bilateral dermoid cyst with associated Immune thrombocytopenia (ITP) as well as autoimmune hematological anemias in recent literature. Here we discuss a case of a 26-year-old female with bilateral ovarian dermoid cyst, who presented with transfusion dependent anemia and thrombocytopenia. Her anemia responded to immunosuppression therapy but thrombocytopenia responded to lesser extent.
Valoblock: A Thermally Resistant and Structurally Design and Enhanced Block
Authors: Cultura Ritchie Angelo , Diva Miguel E. , Rosales John Krylle C. , Cerna Patrick D.
Published: May 2022

Concrete blocks or hollow blocks are widely used in the community for building infrastructure, functioning as a necessity for shelter. However, the Philippines is also known to experience various natural disasters such as earthquakes and typhoons. Relative humidity is also high in the country causing it to have higher temperatures compared to different nations. Given that, the natural disasters and the high relative humidity found in the country contribute to the continuous damage on the infrastructure and lesser thermal properties. In response, the researchers have decided to create an alternative design of a hollow block with improved thermal properties and structural capacity. The researchers have derived and sketched a feasible design of a hollow block with high thermal resistance using Fusion 360. Three hollow block designs namely Design A, Design B, and Design C were then conducted of uniform simulations in the form of a non-linear stress test using Fusion 360. Statistical analysis of the listed factors pointing to safety and durability was also done. The study has attained results where it has been determined each design has certain traits that makes it more preferable than the classic design. In the case of Design B and C, they hold a degree of improvement in terms of its reduced stress and strands. This leads to the idea that Design A can be an appropriate substitution to that of the commonly used design, which would greatly alleviate the common problems that Filipino engineers face daily.
Qualitative Expression of Sox2 and Oct4 in Oral Submucous Fibrosis: An Immunohistochemical Study
Authors: Vidhale Rutuja G. , Pereira Treville , Lalai Megha N. , Anjali A.K. , Jain Apeksha , Pereira Christina
Published: May 2022

Background: These stemness markers have proved their ability in tumorigenicity, tumor metastasis, and even distant recurrence after chemotherapy in different types of cancer. Also, it has shown its evidence in pre-malignant conditions such as OSMF (Oral Submucous Fibrosis) did show the presence of stem cell markers such as Sox2 and Oct4.

 Aim: Establishing the relationship of Sox2 and Oct4 markers with a potentially malignant disorder, OSMF. Correlation between the said markers and the clinical and histopathological classification.

Materials and Methods: 40 archival tissue samples of OSMF were clinically and histopathologically classified using Khanna and Andrade classification. Immunohistochemical analysis for Sox2 and Oct4 was performed on paraffin-embedded tissue sections on 20 histopathologically confirmed cases of oral submucous fibrosis each.

Results: The resulting data were analyzed using the SPSS software version 20.0. The significance of the parameters was tested by the Pearson's Chi-square test (P ≤ 0.05 as statistically significant). The immunohistochemical results showed that Sox2 and Oct4 could be detected in the basal and suprabasal layers in OSMF. Although no significant difference was noted in the expression of Sox2 and Oct4 with increasing grades of oral submucous fibrosis

Conclusion: The results obtained from this study show a contingency between the Sox2 and Oct4 marker with OSMF. These results need to be further investigated and further verified with the inclusion of a greater number of cases.
O uso dos prazeres e o cuidado de si: genealogia de um texto
Authors: Gros Frédéric , Vergara Cerqueira Fábio , Leite Letticia
Published: May 2022

Tradução do texto: « L’Usages des plaisirs et Le Souci de soi : généalogie d’un texte », in BOEHRINGER, Sandra; Lorenzini, Daniele. Foucault, la sexualité, l’Antiquité. Paris : Éd. Kimé, 2016. Agradece-se às organizadoras da coletânea e ao autor por autorizar a tradução. O autor agradece Fábio Vergara Cerqueira, pela tradução, e Letticia Leite, pela revisão técnica.
Urraca I (1109-1126), gênero e monarquia: um estado da questão
Authors: Tollendal Prudente Luísa
Published: May 2022

O objetivo deste artigo é realizar um panorama das fontes narrativas disponíveis para o estudo de Urraca I (ressaltando-se como as diretrizes de gênero de cada época foram articuladas em prol da condenação ou legitimação da rainha, e da idéia de um poder régio feminino); e uma revisão bibliográfica dos trabalhos dedicados ao período, visando identificar se, e de que maneira, o conceito de “gênero” foi utilizado até o momento pela historiografia, relativamente a esse reinado e à problemática do exercício feminino do poder monárquico na Castela medieval - estabelecendo-se, assim, um estado da questão.
Editorial
Authors: Galrão Abrantes Beatriz , Vieira de Melo Santos Lucas , Pereira Lima Marcelo
Published: May 2022

Editorial da Revista Veredas da História, v. 10. n.2, 2017
O funcionamento econômico da Igreja copta nos estágios iniciais do Egito islâmico (séculos VII a X)
Authors: Bronzato da Costa Cruz Alfredo
Published: May 2022

Partindo de uma leitura da História do Patriarcado Copta de Alexandria, crônica oficial desta instituição, este trabalho tem por objetivo reconstituir, de forma sinóptica, o funcionamento econômico da Igreja Copta nos estágios iniciais do Egito islâmico – ou seja, desde a conquista do Vale do Nilo pelos árabes, em 641, até as vésperas da tomada da região pelos fatímidas, em 969. No âmbito de tal reconstituição, deu-se especial atenção às assimétricas interações econômicas entre o governo islâmico e a comunidade cristã egípcia, e às estratégias de arrecadação praticadas pelos diferentes tipos de profissionais vinculados à Igreja Copta – tais como monges, bispos, clérigos casados e patriarcas. Espera-se que o texto contribua para a elaboração de uma futura história comparada da administração eclesiástica na Antiguidade Tardia e no Medievo.
Noviças e freiras: as candidatas à profissão religiosa, no Convento de Nossa Senhora da Conceição da Ajuda do Rio de Janeiro (1750 a 1757)
Authors: Dias de Oliveira Amanda
Published: May 2022

A proposta do artigo é trazer um mapeamento social das candidatas ao noviciado e à profissão religiosa do Convento de Nossa Senhora da Conceição da Ajuda, do Rio de Janeiro, em princípio de sua fundação, nos anos de 1750 a 1757. São ao todo, vinte e oito solicitações, que em sua maioria, eram para noviciar e professar no dito convento como freiras de véu preto, uma solicitação para religiosa de véu branco e duas solicitações para um recolhimento temporário. Na composição do trabalho, vão ser indicados: a origem das candidatas, o nome de seus pais ou responsáveis, se de fato tornaram-se religiosas e a idade e o ano em que faleceram. Tais questões terão por finalidade, registrar a biografia coletiva destas mulheres.
Of when it was necessary to remind a bishop of his duties: looking into Bede’s letter to Egbert of York
Authors: Kubrusly de Freitas Diogo
Published: May 2022

Bede’s letter to Bishop Egbert could very well be seen as an urgent call for immediate changes at the Northumbrian Church. In his letter, the monk from Wearmouth-Jarrow denounces a series of abuses which were being committed by ecclesiastical members of his time. Not only does Bede’s writing denounce the clergy’s lack of moral values and negligence towards the preaching of the Word, but it also proposes specific actions to bring these issues to an end. This paper brings out some key elements from the referred historical source and tries to get some glimpses of a couple of Bede’s views on what the real Church should be like. Scholars such as Blair (1990), Brown (2010), DeGregorio (2010), Mayr-Harting (1991) and Yorke (2014) among other ones have helped us to exploit the subjects which are brought here.
As origens do crime ritual e as dinâmicas da difusão de uma narrativa acusatória contra os judeus no século XII
Authors: De Freitas Morais Vinícius
Published: May 2022

O debate em torno das origens da acusação de crime ritual contra os judeus é pautado, sobre tudo, a partir do assassinato do menino chamado Guilherme de Norwich (1144) e seu posterior culto local. Graças ao monge Tomás de Monmouth, há uma densa narrativa hagiográfica que não buscava apenas ser uma enumeração dos milagres do menino “mártir”, mas também uma argumentação contra os céticos da santidade e do martírio de Guilherme. Essa narrativa, desde o século XIX, é vista como o principal indicio para o surgimento da lenda de crime ritual, no qual o monge Tomás seria o principal articulador e criador. Neste presente artigo busca-se problematizar pontos abordados por historiadores que ora eram favoráveis à identificação de uma origem a partir do assassinato de Guilherme, ora tomavam uma posição cética sobre uma efetiva percepção de um surgimento para essa lenda. Em suma, presume-se que - a partir de diversos indícios não só deixados pelo monge Tomás, mas também por outros documentos - seja possível creditar, ao caso de Norwich (1144), o posto de primeira acusação de crime ritual direcionada aos judeus.
Revista Veredas da História (v. 11, n.2, 2018)
Authors: Pereira Lima Marcelo
Published: May 2022

Edição Completa da Revista Veredas da História (v. 11, n.2, 2018)
Apresentação do Dossiê Moda & História
Authors: Debom Paulo , Borges da Silva Camila
Published: May 2022

O objetivo desse dossiê é discutir a História da Moda em suas diversas interfaces com as múltiplas áreas do conhecimento e a heterogeneidade é o elo que conecta as cores e as dobras dos diferentes textos. Os artigos englobam um grande leque de temas, abordando o vestir em seu diálogo com questões que transitam por trilhas como gênero, corpo, sociedade de corte, imprensa, tropicalismo, política, identidade e produção de imagens. O leitor irá perceber que a riqueza do campo é tamanha que mesmo a palavra "moda" pode ser tomada como um conceito, com sentidos e datas de nascimento distintos, dependendo do pesquisador que a aborda.
Styling: a produção de imagem na moda
Authors: Nunes Alexandre
Published: May 2022

Este artigo busca compreender como a moda estabelece seus padrões estéticos através das imagens produzidas pelo stylist, profissional da área de Styling de Moda que é conhecida no Brasil como Produção de Moda. Este profissional é responsável pela produção de imagens que são veiculadas em desfiles, editoriais de revistas, catálogos e impressos publicitários de moda com o objetivo de divulgar as tendências, os estilos e os novos produtos criados pela indústria da moda
O prefácio de “Ab urbe condita” de Tito Lívio e a tradição historiográfica grega
Authors: Renan Correa Denis
Published: May 2022

O texto aborda o prefácio de Ab Urbe Condita por Tito Lívio, como forma de diálogo e emulação com a tradição da historiografia grega. O prefácio enquanto peça introdutória da historiografia antiga segue uma estrutura característica que estabelece o escopo e a ênfase da obra de acordo com diferentes critérios históricos. Tito Lívio dialoga com esta tradição ao mesmo tempo em que inova ao oferecer uma dimensão própria da sua obra na sua intertextualidade agonística com a tradição precedente.
O levantamento de concepções prévias em uma aula-oficina: a perspectiva de história a partir da experiência e da consciência histórica
Authors: Aparecida de Oliveira Krisley
Published: May 2022

É de suma importância investigarmos e elaborarmos reflexões didático-pedagógicas no que diz respeito ao ensino e aprendizagem da disciplina de história, nos preocupando com o conteúdo que é realmente transmitido, com o que poderia e com o que deveria ser transmitido. Sendo assim, lançar mão da investigação da consciência histórica e tentar fazer a regulamentação didática da mesma, é um fator essencial da autoidentidade humana. A utilização de métodos educacionais diferentes em sala de aula é um recurso que o professor tem para captar o interesse dos alunos. No caso do modelo da aula-oficina, com maior abertura para diálogo entre professor e aluno, é importante a utilização de recursos e estratégias, como, por exemplo, o levantamento das concepções prévias, que ultrapassa o quesito de chamar a atenção do aluno, mas confere a ele o lugar de agente crítico e debatedor de ideias.
La ficcionalidad en el oficio histórico
Authors: Andrés Torres Chacón Fabián
Published: May 2022

Reseña de: JABLONKA, Ivan. La historia es una literatura contemporánea: manifiesto por las ciencias sociales. Buenos Aires: Fondo de Cultura económica. 2016, 348 p.
Editorial
Authors: ´Pereira Lima Marcelo
Published: May 2022

Editorial v.12, n. 2, 2019. Editoração realizada Marcelo Pereira Lima
O Império Romano e poder da Igreja Cristã: bispos e homens santos, e a atuação política nas cortes imperiais do IV ao VI século
Authors: Cristina da Costa Bezerra de Menezes Mamedes Kelly
Published: May 2022

O período que se estende entre os séculos IV e VI é marcado pela progressiva aproximação entre o Império Romano e a Igreja cristã. A anterior hostilidade do Império manifestada em ações persecutórias é substituída pela concessão de privilégios e a proteção a uma Igreja cujo número de adeptos aumenta de forma constante se espalhando por todas as regiões dos domínios imperiais e por todos os grupos sociais que formam a sociedade tardo romana. É notório que, após o Édito de Milão, em 313, os bispos e os chamados homens santos se tornarão cada vez mais influentes no ambiente cortesão e com um acesso cada vez maior ao próprio imperador. Este presente artigo pretende analisar a hierarquização e organização da estrutura da Igreja Cristã e o papel que desempenhavam esses religiosos no cenário político romano tardio.
Revista Veredas da História (v. 12, n.2, 2019)
Authors: ´Pereira Lima Marcelo , Souza Couto Edilece
Published: May 2022

Revista Veredas da História, v. 12, n.2, 2019
Táin Bó Cúalnge: um olhar sobre a relação de Cú Chulainn e animais mágicos
Authors: Galrão Abrantes Beatriz
Published: May 2022

As divindades celtas estão intimamente associadas com os animais. Este é o caso do filho de Lug, Cú Chulainn, cujo nome Cú, significa Cachorro, e Chulainn, de Culann, o ferreiro real. A personagem épica liga-se a outros animais: Cavalo, Cisne e Corvo. Este trabalho tem como objetivos identificar e analisar os diferentes animais associados ao herói Cú Chulainn, dentro do épico, e se, e como elas perpassam por uma noção de masculinidade. Pretende pensar sobre a construção das masculinidades associadas a personagem, sob a perspectiva de que o gênero é uma construção social.
Gênero, mediação e santidade nas Cantigas de Santa Maria (século XIII)
Authors: Garcez Moura de Santana Isabela
Published: May 2022

As Cantigas galego-portuguesas fazem parte da lírica sacra medieval. As Cantigas de Santa Maria são um conjunto de quatrocentas e vinte e sete composições escritas em galego-português, língua primordial da lírica culta em Castela do século XIII. São cantigas que tratam de questões de sua época, especialmente sobre os costumes, grupos sociais, religiões, milagres atribuídos a Virgem Maria e louvores dedicados a ela. Estas questões estavam direcionadas a servirem de modelos de condutas a serem seguidos, centralizando-se em uma figura literária bíblica, apropriada pelos textos medievais, embora sua presença seja quase atemporal para o sistema de valores cristãos. Dito isto, este trabalho analisa de que maneira os modelos de condutas contidos na documentação foram influenciados por diferentes marcadores sociais, sobretudo pelas diretrizes de gênero. Para isso, discutiremos como e porque algumas Cantigas de Santa Maria representam a mediação entre o mundo social e sobrenatural.
Antilusitanismo na Primeira República
Authors: Dos Santos Junior Hemerson
Published: May 2022

Resenha sobre o texto: RIBEIRO, Gladys Sabina. O Rio de Janeiro dos fados, minhotos e alfacinhas: o antilusitanismo na Primeira República. Niterói, EDUFF, 2017, 266p.
Mulheres na História do Paraná
Authors: Resende da Costa Lourenço
Published: May 2022

Resenha sobre o livro VÁZQUEZ, Georgiane Garabely Heil (Org).  Nova História das Mulheres no Paraná. Porto Alegre, RS: Editora Fi, 2020. (244p).
Portugal e Inglaterra no período pombalino: relações e influências sobre os conflitos entre espanhóis e portugueses na região do Prata
Authors: Oliveira Daniel
Published: May 2022

O presente artigo tem como objetivo analisar as ambíguas relações estabelecidas entre Portugal e Inglaterra no período Pombalino (1750-1777), enfocando suas consequências nos conflitos ocorridos entre Portugal e Espanha, dando ênfase à região do Prata, que resultaram na assinatura do Tratado de Santo Ildefonso. Dessa forma, é realizado um estudo sobre os antecedentes da aliança política e econômica anglo-lusitana, concretizada a partir do Tratado de Methuen (1703). Também é levado em consideração nessa análise o período em que Sebastião José de Carvalho e Melo (Conde de Oeiras e depois Marquês de Pombal) prestou serviços a coroa portuguesa como embaixador português em Londres, entre 1738 e 1742. Este período teria servido para Pombal entender os motivos da supremacia britânica sobre Portugal e também servido de base para as medidas adotadas quando subiu ao poder como primeiro ministro de D. José I.
As Histórias D’os Sertões: a história, a crítica, o monumento
Authors: Claret Batalhone Júnior Vitor
Published: May 2022

Apesar do trabalho de cunho historiográfico realizado pelo o autor, Os sertões é tradicionalmente classificado como reportagem ou literatura. Muitas das simplificações tipológicas estiveram vinculadas às disputas ocorridas entre os letrados brasileiros do início do século XX, principalmente no que tange à construção de uma identidade nacional. Tais literatos perceberam a obra como eminentemente literária. A busca romântica de uma essência nacional encontrou em Os sertões objeto privilegiado. Seu núcleo poético não limita interpretações do texto, que, ao longo da história do Brasil, sempre se abriu a leituras múltiplas vinculadas não somente às análises teóricas, mas também a embates políticos e intelectuais travados entre interlocutores e críticos. Assim, o estudo proposto contribui no sentido de analisar referido o livro sob um olhar teórico e historiográfico.
As cartas do Dembo Caculo Cacahenda: um pouco da história dos Dembos e da relação deste com as autoridades portuguesas situadas em Angola (1780-1850)
Authors: Lucas Vieira Daiana
Published: May 2022

Situados em Angola, principalmente entre os rios Dande e Bengo (Zenza), provavelmente desde o século XVII, viviam povos que possuíam uma organização política e reconheciam como líder os denominados Dembos. Estes líderes ao entrarem em contato com as autoridades portuguesas e com a cultura portuguesa aos poucos foram se apropriando da escrita e do português. A partir de determinado momento as autoridades lusas e os Dembos começaram a se comunicar por meio de cartas. Estas cartas foram transcritas por duas pesquisadoras portuguesas e é hoje a fonte que utilizo para desvendar um pouco da história dos Dembos e da relação deste com as autoridades portuguesas situadas em Angola. O recorte temporal abrange o período de 1780-1850.
História e literaturas medievais
Authors: Ogando Insuela Camargo Gustavo
Published: May 2022

Resenha do livro GARCÍA, Antonio Rubial; MOCTEZUMA, Israel Álvarez, (Coord). Historia y Literatura: Textos Del Ocidente Medieval: Memorias del Primer Coloquio del Seminário Interdisciplinario de Estudios Medievales. México, D. F. Universidad Nacional Autónoma de México. 2010, 164p.
Revista Veredas da História (v. 8, n.1, 2015)
Authors: Pereira Lima Marcelo
Published: May 2022

Edição Completa da Revista Veredas da História (v. 8, n.1, 2015)
A moda como objeto do pensamento
Authors: Debom Paulo
Published: May 2022

O tema Moda não recebe, em geral, destaque no ambiente acadêmico. Comumente, é analisado como sinônimo de futilidade e frivolidade, logo um assunto de menor importância. Este artigo tem por objetivo refletir sobre o fenômeno como objeto de pesquisa de grande relevância para os estudos científicos. Para isso, apresenta uma análise das ideias de diferentes pensadores de áreas diversas, como por exemplo, a sociologia, a história e a comunicação, sobre o papel da moda nas sociedades ao longo do tempo. Evidencia o que foi produzido em território nacional e indica as publicações recentes na área.
As mulheres perante os tribunais do Antigo Regime na Península Ibérica
Authors: H. Almeida Pereira Débora
Published: May 2022

Resenha: BRAGA, Isabel M. R. Drumond; HERNÁNDEZ, Margarita Torremocha (Coord.). As mulheres perante os tribunais do Antigo Regime na Península Ibérica. Coimbra: Imprensa da Universidade de Coimbra, 2015. 257 p.
Feminismo e política: uma introdução
Authors: Pereira de Souza Joseane
Published: May 2022

Resenha: MIGUEL, Luis Felipe.; BIROLI, Flávia. Feminismo e Política: uma introdução. São Paulo: Boitempo, 2014. 164 p.
Homossexualidades, repressão e resistência em tempos de Ditadura no Brasil
Authors: Márcia de Moura Leal Kelly
Published: May 2022

Resenha: GREEN, James N & QUINALHA, Renan (Orgs.). Ditadura e homossexualidades: repressão, resistência e a busca pela verdade. São Carlos: EdUFSCar, 2014.
Molecular cloning, functional expression and chromosomal localization of an amiloride‐sensitive Na+ channel from human small intestine
Authors: Schaefer Lionel , Sakai Hideki , Mattei Marie-Geneviève , Lazdunski Michel , Lingueglia Eric
Published: July 2002

Amiloride‐sensitive Na+ channels belonging to the recently discovered NaC/DEG family of genes have been found in several human tissues including epithelia and central and peripheral neurons. We describe here the molecular cloning of a cDNA encoding a novel human amiloride‐sensitive Na+ channel subunit that is principally expressed in the small intestine and has been called hINaC (uman ntestine
+ hannel). This protein is similar to the recently identified rodent channel BLINaC and is relatively close to the acid sensing ion channels (ASICs) (79 and 29% amino acid identity, respectively). ASICs are activated by extracellular protons and probably participate in sensory neurons to nociception linked to tissue acidosis. hINaC is not activated by lowering the external pH but gain‐of‐function mutations can be introduced and reveal when expressed in Xenopus oocytes, an important Na+ channel activity which is blocked by amiloride (IC50=0.5 μM). These results suggest the existence of a still unknown physiological activator for hINaC (e.g. an extracellular ligand). The presence of this new amiloride‐sensitive Na+ channel in human small intestine probably has interesting physiological as well as physiopathological implications that remain to be clarified. The large activation of this channel by point mutations may be associated with a degenerin‐like behavior as previously observed for channels expressed in nematode mechanosensitive neurons. The hINaC gene has been mapped on the 4q31.3–q32 region of the human genome.
The distribution of macroinvertebrates and fishes in Tasmanian estuaries
Authors: Edgar G. J. , Barrett N. S. , Last P. R.
Published: July 2002

The distributions of 390 taxa of benthic macroinvertebrates collected in forty‐eight estuaries and 101 fish species collected in seventy‐five Tasmanian estuaries were related to geographical and environmental variables. Distribution patterns for the two taxonomic groups were largely congruent at both between and within‐estuary scales. Faunal composition and the number of species collected at a site were primarily related to site salinity, the biomass of seagrass and tidal range. At the broader estuary scale, the distributions of macroinvertebrate and fish assemblages were primarily correlated with the presence of an entrance bar.

Species richness varied with geographical location for both macrofauna and fishes, with highest numbers of species occurring in the Furneaux Group, north‐eastern Tasmania and south‐eastern Tasmania. These patterns primarily reflected differences in estuary type between regions rather than concentrations of locally endemic species. Although the majority of species collected during the study were marine vagrants, they constituted a very low proportion of total animal densities within estuaries. Only four species considered exotic to Tasmania were identifed.

Nearly all species recorded from Tasmanian estuaries occurred widely within the state and have also been recorded in south‐eastern Australia. Only 1% of estuarine fish species and < 5% of invertebrate species were considered endemic to the state. The generally wide ranges of species around Tasmania were complicated by (i) the absence of most species from the west coast (ii) a small (< 10%) component of species that occurred only in the north‐east and Furneaux Group (eastern Bass Strait), and (iii) a few species (< 5%) restricted to other regions.

The low number of species recorded from estuaries along the western Tasmanian coast reflected extremely low faunal biomass in that area. This depression in biomass on the west coast was attributed to unusually low concentrations of dissolved nutrients in rivers and dark tannin‐stained waters which greatly restricted algal photosynthesis and primary production.
Direct observation of extended monolayer flat islands at metalorganic vapor phase epitaxy grown Al0.5Ga0.5As-GaAs single quantum well interfaces
Authors: Stützler F. J. , Fujieda S. , Mizuta M. , Ishida K.
Published: July 2002

Extended monolayer flat islands occurring at the heterointerface of metalorganic vapor phase epitaxy grown, growth interrupted Al0.5Ga0.5 As-GaAs single quantum wells are directly observed for the first time by spatially resolved cathodoluminescence (CL). CL images of growth islands with a lateral size of between 500 nm and 2 μm are shown. The photoluminescence emission peak shows splitting corresponding to exciton transitions in the growth islands of the quantum well with a difference in the well thickness of one atomic layer.
GaAs light-emitting diodes with n-i-p-i active layers fabricated by selective contact diffusion
Authors: Ackley D. E. , Mantz J. , Lee H. , Nouri N. , Shieh C.-L.
Published: July 2002

GaAs/AlGaAs light-emitting diodes (LED’s) with nipi active regions have been successfully fabricated using sequential n and p diffusions to selectively contact the doping superlattice. By doing sequential patterned sulfur and zinc diffusions, a lateral injection LED can be readily fabricated. Excellent current-voltage characteristics were achieved with reverse breakdown voltages in excess of 9.5 V, indicating that the selective contacts were nearly optimum. cw outputs of 500 μW at 50 mA drive current have been observed. The LED output spectrum was seen to tune with applied bias at a rate of about 650 meV/V at low temperatures.
Scanning electron microscope identification of weak links in superconducting thin films
Authors: Monroe Don , Brocklesby W. S. , Farrow R. C. , Hong M. , Liou S. H.
Published: July 2002

We have used a pulsed electron beam in a scanning electron microscope to produce highly localized (∼1 μm) changes in the electrical properties of a heterogeneous thin film of YBa2Cu3O7−δ . The predominant effect of the beam is to locally heat the film, producing a measurable shift in the current-voltage characteristic. In particular, we have precisely located the part of the film responsible for a sharp feature in the current-voltage characteristic corresponding to a single Josephson junction. The technique should also be useful more generally in identifying specific weak links in superconducting thin films.
Elastic oscillatory resistances of small contacts
Authors: García N. , Escapa L.
Published: July 2002

We discuss the elastic coherent resistances of small contacts or constrictions between reservoirs. These resistances show an oscillatory behavior versus contact size, increase when the size of the contact decreases, and are dominant over the inelastic or residual resistances for realistic values of resistivities, temperature, and purity.
GaInAsP/InP lasers with etched mirrors by reactive ion etching using a mixture of ethane and hydrogen
Authors: Matsui Teruhito , Sugimoto Hiroshi , Ohishi Toshiyuki , Abe Yuji , Ohtsuka Ken’ichi , Ogata Hitoshi
Published: July 2002

A reactive ion etching method is applied to fabricate mirrors of 1.5 μm GaInAsP/InP mass transport lasers using a mixture of ethane and hydrogen as an etchant. Threshold currents as low as 35 mA are achieved for the 300-μm-long cavity lasers with one etched and one cleaved facet. The differential quantum efficiencies of the lasers with one dry etched facet and both dry etched facets are 13 and 9.5%, respectively.
Admittance spectroscopy measurement of band offsets in strained layers of InxGa1−xAs grown on InP
Authors: Cavicchi R. E. , Lang D. V. , Gershoni D. , Sergent A. M. , Vandenberg J. M. , Chu S. N. G. , Panish M. B.
Published: July 2002

We report measurements of the conduction-band offset in strained-layer superlattices of InxGa1−xAs/InP. Admittance spectroscopy was used to measure the activation energy for thermionic emission of electrons over InP barriers in n-type superlattices. Superlattice dimensions and x values were obtained from high-resolution x-ray diffraction and transmission electron microscopy studies. For x=0.37, 0.53, and 0.69, the values obtained for the conduction-band offset are 175±25 meV, 210±20 meV, and 315±25 meV, respectively.
Structured ion energy distribution in radio frequency glow-discharge systems
Authors: Wild Ch. , Koidl P.
Published: July 2002

The energy distribution of ions incident on the cathode (smaller electrode) in a capacitively coupled asymmetric rf discharge was measured for different process parameters. It was found that the ion energy distribution exhibits a characteristic series of peaks, which are explained by the high-frequency modulation of the sheath potential combined with charge exchange in the cathode sheath. A parametric model of the ion transport through the sheath is presented showing that the position of the peaks in the ion energy distribution depends only on a discharge scaling parameter and the spatial variation of the electric field ε(x) across the sheath region. Good agreement between theoretical and experimental ion energy distributions in an argon discharge is obtained for an electric field variation ε(x)∼xν with ν in the range 0.55–0.7.
Hot-electron limitation to the sensitivity of the dc superconducting quantum interference device
Authors: Wellstood Frederick C. , Urbina Cristian , Clarke John
Published: July 2002

The noise energy of conventional thin-film dc superconducting quantum interference devices (SQUIDs) flattened out as the operating temperature was lowered below 140 mK. We attribute this saturation to the heating of the electrons in the resistive shunts by the SQUID bias current. This ‘‘hot-electron effect’’ is a general property of normal metals at low temperatures and arises from the limited rate at which the electrons can transfer energy to phonons. The temperature of the electrons, and hence the noise energy of the SQUIDs, was reduced by a factor of about 3 by attaching large volume ‘‘cooling fins’’ to each shunt.
Thin-film magnetic patterns in an external field
Authors: Bryant Paul , Suhl Harry
Published: July 2002

The behavior of ideally soft ferromagnetic films in the presence of a weak coplanar magnetic field is explored by the method of characteristics. Solutions are found which have no internal field or in some cases have field-free zones. Results are specifically given for circular and elliptic disks, the infinite strip, and the semi-infinite plane. The disk solutions have internal domain walls.
New method of controlling the gaps between the minibands of a superlattice
Authors: Peeters F. M. , Vasilopoulos P.
Published: July 2002

We show that it is possible to control the gap between the minibands of a superlattice by introducing positive barriers in the wells of the superlattice. An appropriate choice of the position, the width, and the height of these barriers achieved by standard methods can reduce or even close the minigaps of the superlattice.
Microvoids in amorphous Si1−xCx:H alloys studied by small-angle x-ray scattering
Authors: Williamson D. L. , Mahan A. H. , Nelson B. P. , Crandall R. S.
Published: July 2002

The microstructure of hydrogenated amorphous silicon-carbon alloys has been analyzed by small-angle x-ray scattering, infrared absorption, and density measurements. Decreasing density with C incorporation is due to microvoids about 0.6 nm in average radius, which are either approximately spherical in shape or randomly oriented nonspheres. The microvoid number density increases from about 5×1019/cm3 for a-Si:H to about 4×1020/cm3 for a-Si0.7 C0.3 :H. The CH3 species probably causes the enhanced microvoid formation in these alloys. A large fraction of the microvoid surfaces is not hydrogenated.
Mode locking of high-power neodymium:yttrium aluminum garnet lasers at ultrahigh repetition rates
Authors: Sizer Theodore
Published: July 2002

A high-power lamp-pumped Nd:YAG laser has been harmonically mode locked using a specially fabricated GaP mode locker at repetition rates of 0.25, 0.5, and 1 GHz. At these ultrahigh mode-locking frequencies the pulse duration is reduced as well. Stable 31 ps pulses have been produced with 4 W of average output power.
Microfabrication and optical study of reactive ion etched InGaAsP/InP and GaAs/GaAlAs quantum wires
Authors: Izrael A. , Sermage B. , Marzin J. Y. , Ougazzaden A. , Azoulay R. , Etrillard J. , Thierry-Mieg V. , Henry L.
Published: July 2002

Microfabrication of reactive ion etched InGaAsP/InP and GaAs/GaAlAs quantum wire structures with dimensions down to 30 nm has been achieved. From time-resolved photoluminescence, the importance of surface recombination effects is outlined in both systems. It is shown that the use of epitaxial overgrowth leads to a significant increase of the carrier lifetime in GaAs/GaAlAs wires, so that emission of very narrow wires (width<40 nm) can be detected. The possible assignment of the observed shifts of the cw photoluminescence peak energies to additional lateral confinement effects is discussed.
Low-temperature growth of ZnSe by molecular beam epitaxy using cracked selenium
Authors: Cammack D. A. , Shahzad K. , Marshall T.
Published: July 2002

The growth of zinc selenide by molecular beam epitaxy using a cracked selenium source is studied. It is found that high quality growth can be achieved at substantially lower substrate temperatures than has been possible using uncracked selenium sources. It is determined from reflection high-energy electron diffraction observations that the use of cracked selenium produces growth dominated by a two-dimensional mechanism at substrate temperatures as low as 225 °C and that exposure of the GaAs substrate to cracked selenium prior to the initiation of growth has a substantial effect on the GaAs substrate and the early stages of ZnSe growth.