bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mechanical and Microstructural Characterization of Forged Inconel 625 Ring Gaskets for Oil and Gas Application
Authors: Rivolta B. , Gerosa R. , Tavasci F. , Ori Belometti L. 
Published: October 2017

Abstract
The need for mechanical components that perform well in critical service conditions pushed industrial research to develop materials with an excellent combination of mechanical and corrosion resistance. Among these new materials are nickel alloys and duplex stainless steels, which play primary roles in many engineering fields, especially in the oil and gas industries, in which the use of pipes, flanges, and gaskets is very common. In the international standards, much attention is paid to the first two components, but less information is available about gaskets and their behavior during the tightening operation. Standards generally require a maximum hardness for the gasket, even if this parameter is not sufficient to describe the whole plastic behavior of the material. In this experimental work, two forged Inconel 625 rings were investigated: one was delivered in the as-forged condition, whereas the second was solubilized at 1,150°C. The soaking time at such a temperature must be carefully studied in order to get a homogeneous temperature field in the whole component and to obtain a decrease of the as-forged hardness as required by the standards. For such a reason, tests will be performed to study the grain growth and the hardness evolution varying the soaking time at 1,150°C. Finally, the tensile and compression properties will be studied to determine the stress-strain behavior of the alloy in the elastic and plastic fields.
Clinical characteristics of 138 Chinese female patients with idiopathic hypogonadotropic hypogonadism
Authors: Tang Rui-yi , Chen Rong , Ma Miao , Lin Shou-qing , Zhang Yi-wen , Wang Ya-ping 
Published: October 2017

Objective
To evaluate the clinical features of Chinese women with idiopathic hypogonadotropic hypogonadism (IHH).

Methods
We retrospectively reviewed the clinical characteristics, laboratory and imaging findings, therapeutic management and fertility outcomes of 138 women with IHH. All patients had been treated and followed up at an academic medical centre during 1990–2016.

Results
Among the 138 patients, 82 patients (59.4%) were diagnosed with normosmic IHH and 56 patients (40.6%) were diagnosed with Kallmann syndrome (KS). The patients with IHH experienced occasional menses (4.3%), spontaneous thelarche (45.7%) or spontaneous pubarche (50.7%). Women with thelarche had a higher percentage of pubarche (P < 0.001) and higher gonadotropin concentrations (P < 0.01). Olfactory bulb/sulci abnormalities were found during the magnetic resonance imaging (MRI) of all patients with KS. Most patients with IHH had osteopenia and low bone age. Among the 16 women who received gonadotropin-releasing hormone treatment, ovulation induction or assisted reproductive technology, the clinical pregnancy rate was 81.3% and the live birth rate was 68.8%.

Conclusions
The present study revealed that the phenotypic spectrum of women with IHH is broader than typical primary amenorrhoea with no secondary sexual development, including occasional menses, spontaneous thelarche or pubarche. MRI of the olfactory system can facilitate the diagnosis of KS. Pregnancy can be achieved after receiving appropriate treatment.
CONFIGURANDO NUEVOS MOVIMIENTOS SOCIALES LATINOAMERICANOS EN EL ESPACIO DEL RESQUEBRAJAMIENTO EPISTÉMICO-COLONIAL NEOLIBERAL
Authors: Mejías Sandia Carlos , Suárez Manrique Pablo 
Published: October 2017

Los nuevos movimientos sociales en Latinoamérica están exhibiendo procesos de búsqueda de igualdady diferencia social, étnica, epistémica, sexual y de género, en contextos construidos por formas dedominación múltiple que caracterizan las dinámicas del capitalismo global contemporáneo. El escritopropone que las nuevas otras epistemologías que despliegan algunos movimientos sociales contemporáneos constituyen una pista de relación densa entre la producción de conocimiento sobre el fenómeno y las recientes experiencias colectivas de liberación social, o dicho de otra manera, variadas praxis cotidianas forjan unas otras formas de epistemología política liberadora.
Indirect Effects of Copper Sulfate Addition on Zooplankton Communities in Ohio Upground Reservoirs
Authors: Williams Meghan C.W. , Conroy Joseph D. , Miner Jeffrey G. , Farver John R. 
Published: October 2017

Municipal water managers use copper sulfate (CuSO4) to control algae, predominantly phytoplankton, in water supply reservoirs. In multiple-purpose upground reservoirs in northwestern Ohio, CuSO4 application regimens vary from no application to over 600 µg Cu/L/year. Whereas CuSO4 effectively suppresses phytoplankton growth, it also has documented toxicities to zooplankton, which serve as forage for stocked sport fish. Consequently, CuSO4 application benefits one upground reservoir use (water supply) while potentially negatively affecting another (sport fishing). This research sought to directly compare copper concentrations ([Cu]) in dissolved and particulate fractions with corresponding zooplankton community composition and abundance both before and after CuSO4 application in Ohio upground reservoirs. Copper concentrations and zooplankton community characters were measured at four upground reservoirs (n = 2 treated with CuSO4 and n = 2 untreated) over multiple weeks during summer 2010. Total [Cu] in treated reservoirs increased by as much as 428% from pre- (mean = 16.5 µg/L) to post-application (mean = 70.7 µg/L); concomitantly, zooplankton biomass and density decreased by as much as 93%. Post-application zooplankton communities shifted to dominance by small copepod nauplii from a mixed community that included larger cladocerans. Copepod nauplii represent a less-suitable food source for stocked juvenile yellow perch Perca flavescens. Thus, short-term negative effects to the zooplankton community may result from CuSO4 applications, indirectly affecting stocked sport fish success.
The Distribution and Abundance of mussels (Bivalvia: Unionidae) in Lower Big Walnut Creek from Hoover Dam to its Mouth, in Franklin and Pickaway Counties, Ohio
Authors: Hoggarth Michael , Grumney Michael 
Published: October 2017

Big Walnut Creek in central Ohio once supported a mussel fauna of 40 species, but no systematic study of the mussels of the creek has been done. The objective of the current study was to determine the distribution and abundance of mussels in Big Walnut Creek downstream of Hoover Dam (RM 36.7) to its mouth with the Scioto River. The extant (living and freshly dead shells) and total (extant plus weathered and subfossil shells) mussel communities were determined at 21 sites. Two techniques were used to determine the mussel community at each site: timed searches and transect/quadrat sampling. Shannon-Weiner (H’) values, Jaccard Coefficient of similarity values, and percent extant species were calculated for the mussel communities at each location. Student T-tests were used to determine where either a significant change in community structure occurred based on the metrics listed above. The mussel communities from Hoover Dam to Whitehall (RM 22.0) had maintained their diversity. The historic and extant communities in this reach were essentially the same (Jaccard Coefficient = 83% and percent extant species = 78%) with H’ values for this reach not significantly different when comparing the total and extant communities (t = 1.08, p > 0.05). The communities from RM 22.0 to RM 15.0 (just downstream of Three Rivers MetroPark) had fewer extant species (Jaccard Coefficient and percent extant values of 62% and 36%, respectively), and significantly diminished species diversity (t = 2.35, p < 0.05). Diminished species diversity continued to be expressed downstream (t = 2.48, p < 0.05), with some recovery (Jaccard Coefficient = 67% and percent extant = 42%) as we approached the mouth of the creek. This improvement may be a result of movement of mussels (as larvae attached to fish hosts) from the Scioto River.
The Road to Teacher Burnout and its Possible Protecting Factors – A Narrative Review
Authors: Nagy Eszter 
Published: October 2017

<p><em>In this review study personality characteristics and workplace environment variables (with special attention to classroom conditions) areinvestigated regarding the phenomenon of teacher burnout in order to discover the basis of an effective intervention program. Regardingthe studies, the Maslach Burnout Inventory Educational Survey for burnout measurement</em>(Maslach, Schaufeli, &amp; Leiter, 2001)<em>was applied in all of the researches. Samples have been collected from the USA and several countries of Europe. According to the results, workload and social support turned out to be major influencing factors as much aswork characteristicsare concerned, and positive affectivity, emotional stability and self-efficacy were the major influencing variables as much as personality characteristicsare concerned. As a conclusion of the correlating tendencies, a hypothesized model has been created, in order to explain the process of how an individual responds to his or her environment in the process of burnout, where the steps are: </em>(1) emotional traits (e.g.: emotional stability, positive affectivity, extraversion) -&gt; (2) perceived work environment and work characteristics -&gt; (3) consideration about one’s ability to cope (self-efficacy, self-confidence) -&gt; (4) choice of a coping strategy -&gt; (5) influence on the level of burnout (either increase or decrease).<em></em></p>
Intensive Follow-Up After Curative Surgery for Colorectal Cancer
Authors: Rodrigues Rita Vale , Silva João Pereira da , Rosa Isadora , Santos Isabel , Pereira Nuno , Soares Carla , Pereira António Dias 
Published: October 2017

Introduction: The purpose of postoperative surveillance programs after curative treatment for colorectal cancer is to detect asymptomatic recurrences with the premise that an important rate will be eligible for curative resection, improving overall survival. We have implemented a surveillance program for patients with colorectal cancer, stages II-III, with periodic clinical, carcinoembryonic antigen and cancer antigen-19-9 assessment, computed tomography and colonoscopy. The aim of this study was to assess the rate of curative treatment of recurrence, colorectal cancer mortality and clinical characteristics associated with non-resectable recurrence.Material and Methods: Open cohort study, single center. All patients on the intensive surveillance program between March 2008 and January 2015 were included. Statistics: chi-square, Wilcoxon rank sum test, logistic regression, Kaplan-Meier log-rank test (SPSS20®).Results: We had a total 404 patients evaluated; 59.6% male; mean age of 65 ± 10 years; 50.7% rectal tumor; 56.2% stage III. The average time of follow-up was 37 months and the recurrence rate was 12.9% (n = 52), mostly detected in the first three years (88.4%). The pattern of recurrence was associated with the site of the primary tumor (p < 0.001). Twenty-one patients underwent curative resection. Factors associated with non-resectable recurrence were aged ≥ 70 years (p = 0.022), disease location in the colon (p = 0.033) and cancer antigen-19-9-9 elevation (p = 0.024). The overall rate of cancer-specific mortality was 2.2% (n = 9).Discussion: The association between colon cancer and non-resectable recurrence is explained by the higher rate of disseminated disease in these patients. Cancer antigen-19-9 added no benefit to the surveillance program.Conclusion: This intensive real-world postoperative surveillance program allowed performing curative surgery to 40.3% of patients with recurrence.
Morbilidade Neonatal na Diabetes Gestacional: Coincidência ou Consequência do Consenso de 2011
Authors: Mimoso Gabriela , Oliveira Guiomar 
Published: October 2017

Introdução: A diabetes gestacional constitui uma das doenças associada à gravidez com maior taxa de complicações. Apesar de ser uma condição habitualmente transitória, estão reconhecidas as suas complicações a curto e longo prazo. Há evidência científica para afirmar que um bom controlo metabólico reduz as complicações perinatais. Em 2011, foram propostos novos critérios para o seu diagnóstico, o que o tornou possível logo no primeiro trimestre de gravidez. Neste trabalho, propomo-nos comparar a morbilidade neonatal entre dois grupos de recém nascidos filhos de mulheres com diabetes gestacional submetidos a dois protocolos diferentes.Material e Métodos: Estudo observacional analítico, retrospetivo descritivo de recém nascidos de mães com diabetes gestacional com gravidez unifetal seguida na Maternidade Bissaya Barreto no período de 2008 a 2013. Utilizou-se a informação clinica de recém nascidos e mães com diabetes gestacional armazenada em base de dados. Analisaram-se as repercussões clínicas da utilização do novo consenso comparando dois períodos de três anos.Resultados: Analisaram-se 774 díades mãe-filho. No segundo período a diabetes gestacional foi diagnosticada mais precocemente e a terapêutica com insulina foi instituída com mais frequência. Registou-se um aumento significativo da morbilidade neonatal, com mais casos de hipoglicémia neonatal e de anomalias congénitas e maior taxa de recém nascidos leves para a idade gestacional.Discussão: O aumento da morbilidade neonatal, nos últimos anos, associou-se de um modo positivo à precocidade do diagnostico de diabetes gestacional e ao rigor do controlo metabólico.Conclusão: Analisar os dados nacionais será fundamental para compreender este inesperado e preocupante aumento da morbilidade.
Volume ou Valor? O Papel do Radiologista na Gestão dos Exames Radiológicos
Authors: Silva Carlos Francisco , Guerra Teresa 
Published: October 2017

Introdução: Pretendeu-se perceber os motivos e quantificar o número de ecografias e tomografias computorizadas que potencialmente são desperdiçadas a nível da urgência hospitalar na nossa instituição, e a importância que o radiologista pode ter na gestão e triagem desses exames.Material e Métodos: Definiu-se que os exames urgentes pendentes há mais de sete dias seriam objeto de análise quanto ao motivo de não realização, consultando os registos médicos eletrónicos. Foram usadas seis causas para cancelamento dos referidos pedidos: ‘Alteração do estado do doente’, ‘Desistência, recusa ou abandono do doente’, ‘Falecimento do doente’; ‘Sem critério ou contraindicado’, ‘Falta de recursos humanos’ e ‘Engano na marcação’.Resultados: No ano de 2015 obtivemos 1211 exames cancelados, por estarem pendentes há mais de uma semana. As quatro primeiras causas totalizaram 602 exames (somatório de 283, 94, 41 e 184). As duas últimas, 609 (somatório de 29 e 580).Discussão: Verificou-se que os 602 exames correspondentes ao somatório das quatro primeiras causas refletem um potencial desperdício em exames pois não foram determinantes na abordagem do episódio de Urgência e no destino final do doente. Debaixo desta ponta do iceberg poderão estar ainda mais exames e doentes que não escaparam a exames inadequados ou injustificados.Conclusão: O radiologista poderá gerir melhor os exames radiológicos requisitados, triando eficazmente, num ambiente de equipa multidisciplinar, promovendo a elaboração e apoiando a aderência a normas de orientação e diminuindo potencialmente as requisições através de pareceres ou segundas opiniões.
DOENÇA DE CROHN
Authors: Papacosta Nicolas Garcia , Nunes Gabriel Martins , Pacheco Renato Jácomo , Cardoso Macaulay Viturino , Guedes Virgílio Ribeiro 
Published: October 2017

INTRODUÇÃO: A doença de Crohn é qualificada como uma doença inflamatória intestinal, de caráter crônico, recidivante, transmural e que pode afetar qualquer parte do trato digestivo, desde a boca até o ânus, mas, principalmente, o intestino delgado e o cólon. São de cunho multifatorial, com prevalência e incidência variando de acordo com a genética, meio ambiente, microbiota intestinal e até mesmo um possível agente entérico infeccioso. É uma doença que afeta pessoas de várias idades, sexos e raças, apesar de se verificar maior incidência em jovens do sexo feminino e em regiões urbanas. METODOLOGIA: Trata-se de um artigo de revisão no qual, a partir das palavras “doença de Crohn” e “doença inflamatórias intestinais”, foi realizado busca por periódicos nos bancos de dados: PubMed, Scielo, Portal Periódicos CAPES e Google acadêmico. CONCLUSÃO: A doença de Crohn apresenta uma importante taxa de morbimortalidade no mundo, principalmente em regiões em franca urbanização e industrialização. O diagnóstico é um procedimento extremamente complicado devido a sua clínica inespecífica e pelos vários aspetos em comum com outras patologias. Dessa forma, ainda se faz necessário uma melhor investigação científica na área, com intuito de se desenvolver melhores técnicas diagnosticas e condutas a serem tomadas no seguimento e cura dessa patologia.Palavras-chave: Doença de Crohn, Doença inflamatórias intestinais, Diarreia.
ABSTRACT
INTRODUCTION: Crohn's disease is described as an inflammatory, chronic, recurrent, transmural inflammatory disease that can affect any part of the digestive tract, from the mouth to the anus, but especially the small intestine and colon. They are multifactorial, with prevalence and incidence varying according to genetics, environment, intestinal microbiota and even a possible infectious enteric agent. It is a disease that affects people of various ages, sexes and races, although there is a greater incidence in young women and in urban areas. METHODOLOGY: This is a review article in which, from the words "Crohn's disease" and "inflammatory bowel disease", a search was made for journals in the databases: PubMed, Scielo, Portal Periódicos CAPES and Google academic. CONCLUSION: Crohn's disease presents an important morbidity and mortality rate in the world, especially in regions where there is rapid urbanization and industrialization. Diagnosis is an extremely complicated procedure due to its nonspecific clinical and various aspects in common with other pathologies. Thus, a better scientific investigation in the area is still necessary, in order to develop better diagnostic techniques and behaviors to be taken in the follow-up and cure of this pathology. Keywords: Crohn's disease, Inflammatory bowel disease, Diarrhea.
MENINGITE: ASPECTOS EPIDEMIOLÓGICOS DA DOENÇA NA REGIÃO NORTE DO BRASIL
Authors: Dias Fellipe Camargo Ferreira , Rodrigues Junior Carlos Alberto , Cardoso Cerize Rodrigues Lima , Veloso Fernanda Paula Fernandes dos Santos , Rosa Roniel Thalles Almeida da Silva , Figueiredo Benta Natânia Silva 
Published: October 2017

A região Norte do Brasil é considerada zona endêmica de diversas doenças infectocontagiosas, das quais podemos citar a meningite. A doença possui diversos fatores causais, sendo que a etiologia viral é a mais comum, porém a de origem bacteriana apresenta-se como responsável pela maior taxa de mortalidade. Entretanto, apesar da sua relevância no contexto de saúde pública na região Norte do país, poucos são os estudos publicados sobre a meningite na região. Nesse sentido, foi realizado um estudo transversal com o objetivo de traçar o perfil dos indivíduos acometidos por essa doença no Norte do Brasil entre os anos de 2012 e 2015. Os dados foram obtidos no banco de dados oficial do Sistema de Informação de Agravos de Notificação (SINAN). No período de estudo, ocorreu queda no número de casos notificados, houve predominância do sexo masculino, da faixa etária entre 0 e 19 anos e de etiologia bacteriana. Este trabalho, associado a estimativas globais, pode fornecer subsídios para ações de prevenção e controle da meningite na região Norte. Palavras-chave: Meningite; Região Norte; Brasil; Epidemiologia.
ABSTRACT
Northern region of Brazil is considered an endemic area of several infectious diseases, such as meningitis. The disease has several causal factors, and the viral etiology is the most common, but the bacterial origin is responsible for the highest mortality rate. However, despite its relevance in the context of public health in the northern region of the country, there are a few published studies on meningitis in the region. So, a cross-sectional study was carried out with the objective of tracing the profile of the individuals affected by this disease in Northern Brazil between the years of 2012 and 2015. Data were collected from the official database of the notification of injury information system. During the study period, there was a decrease in the number of cases reported, there was a predominance of males, ages ranging from 0 to 19 years and bacterial etiology. This work, combined with global estimates, can provide subsidies for prevention and control of meningitis in the North. Keywords: Meningitis; Northern Brazil; Epidemiology.
HIPERTENSÃO ARTERIAL SISTÊMICA E EVENTOS CARDIOVASCULARES NO ESTADO DO TOCANTINS, BRASIL
Authors: Menezes Marcelo Henrique , Reis Vitor Hugo Sousa , Dantas Daianny Bastos Godinho , De Santana Ana Paula , Dias Fellipe Camargo Ferreira , Rodrigues Junior Carlos Alberto , Cuellar Pedro Manuel Gonzales 
Published: October 2017

Hipertensão arterial sistêmica (HAS) é uma doença definida pela elevação mantida dos níveis pressóricos. Pode ser agravada pela presença de fatores de risco como dislipidemias, obesidade, intolerância à glicose, diabetes mellitus, tabagismo, sedentarismo, entre outros. Realizou-se estudo transversal a fim de determinar o perfil dos casos de HAS notificados no estado do Tocantins, Brasil, no período de 2002 a 2012. Foram coletadas e avaliadas informações presentes no banco de dados oficial do Sistema de Informação de Agravos de Notificação (SINAN). As variáveis analisadas foram idade, sexo, fatores de risco e ocorrência de complicações. Encontrou-se que, no estado do Tocantins, foram notificados 79.570 casos de HAS entre os anos de 2002 e 2012. A média anual foi de 7.233,64 casos/ano. Nesse período, 60,21% dos casos notificados correspondiam ao sexo feminino e 39,79% ao sexo masculino. Adultos acima de 40 anos de idade compreendeu o grupo etário mais acometido. O pico de ocorrência se deu em indivíduos entre 60 e 64 anos. Tabagismo, sobrepeso e sedentarismo, estiveram relacionados com muitos casos notificados, além de graves complicações cardiovasculares preveníveis. Sugere-se, então, que ações educativas de prevenção primária e secundária podem contribuir sobremaneira para diminuir a ocorrência desse agravo na região. Palavras-chave: Hipertensão; Doenças cardiovasculares; Tocantins; Brasil.
ABSTRACT
Hypertension (HTN) is a disease defined by sustained elevation of blood pressure levels. It may be aggravated by the presence of risk factors such as dyslipidemia, obesity, glucose intolerance, diabetes mellitus, smoking, sedentary lifestyle, among others. A cross-sectional study was carried out to determine the profile of cases of HTN reported in the state of Tocantins, Brazil, from 2002 to 2012. Data were collected and evaluated using the official database of the notification of invalidity information system. The analyzed variables were age, sex, risk factors and the occurrence of complications. It was found that in the state of Tocantins, 79,570 cases of HTN were reported between 2002 and 2012. The annual average was 7,233.64 cases/year. During this period, 60.21% of the reported cases were female and 39.79% were male. Adults over 40 years old comprised the most affected age group. The peak occurred in individuals between 60 and 64 years old. Smoking, overweight and sedentary lifestyle were related to many reported cases, as well as serious preventable cardiovascular complications. It is suggested, therefore, that educational actions of primary and secondary prevention can contribute greatly to reduce the occurrence of this disease in the region. Keywords: Hypertension; Cardiovascular Events; Tocantins; Brazil.