149 research outputs found
Scholarly Commons: Past, Present, & Future
No full textThis is the inaugural episode of the podcast ERAU Prescott’s Scholarly Communication Corner with host David Ehrensperger, Scholarly Communication and Research Librarian at the Christine & Steven F. Udvar-Hazy Library & Learning Center on Embry-Riddle Aeronautical University’s Prescott Campus. It will be available on Monday, September 10, 2018.
This episode starts the podcast series with guest Anne Marie Casey, Dean of Scholarly Communication and the Library at Embry-Riddle Aeronautical University out of the Daytona Beach, Florida campus as the host and guest discuss the origin, present, and future of Scholarly Commons – ERAU’s institutional repository
Sistemas de medição fasorial sincronizada: análise do estado da arte e aplicações no monitoramento de sistemas de energia elétrica
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.Neste trabalho investiga-se a utilização de Sistemas de Medição Fasorial em Sistemas de Energia Elétrica, envolvendo uma análise do estado da arte no tema e o desenvolvimento de uma ferramenta de simulação. No estudo do estado da arte são abordados aspectos relativos ao processo de medição fasorial sincronizada, bem como os elementos constituintes deste sistema de medição. De modo a se obter uma visão geral do grau de desenvolvimento e dos tipos de aplicações que vêm atualmente sendo implementadas a partir de medições fasoriais, foram exploradas experiências realizadas em diversos países. Em uma segunda etapa, desenvolveu-se uma ferramenta computacional que permite a simulação de funções de monitoração e controle de sistemas elétricos, quando desempenhadas a partir do uso de sistemas de medição fasorial. Desta forma, são descritos aspectos relacionados à concepção e à implementação desta ferramenta, seus módulos constituintes e respectivas funcionalidades. Com o propósito de se validar a ferramenta desenvolvida, foram realizados experimentos, cujos resultados são apresentados e comentados. This work investigates the use of Phasor Measurement Systems, including an analysis of the state of the art on the theme, and the development of a simulation tool The study of the state of the art concerns about the technical process involved on synchronized phasor measurements, as well as the constitution of this measurement system. In order to obtain a general overview of the development of the phasor measurement technology and its applications, this work explored the experiences carried out at several countries. Besides that, it was developed a computational tool that simulates electric systems monitoring and control functions, performed using phasor measurement systems. Aspects related to the conception and implementations of this tool are described, as well as their constituent modules and respective functionalities. With the purpose of validating the developed tool, experiments were carried out, whose results are presented and discussed
Apoptosis in Bovine Viral Diarrhea Virus (BVDV)- Induced mucosal disease lesions: A histological, immunohistological, and virological investigation
No full textCattle persistently infected with a noncytopathic Bovine viral diarrhea virus (BVDV) are at risk of developing fatal "mucosal disease" (MD). The authors investigated the role of various apoptosis pathways in the pathogenesis of lesions in animals suffering from MD. Therefore, they compared the expression of caspase-3, caspase-8, caspase-9, and Bcl-2L1 (Bcl-x) in tissues of 6 BVDV-free control animals, 7 persistently infected (PI) animals that showed no signs of MD (non-MD PI animals), and 11 animals with MD and correlated the staining with the localization of mucosal lesions. Caspase-3 and -9 staining was markedly stronger in MD cases and was associated with mucosal lesions, even though non-MD PI animals and negative controls also expressed caspase-9. Conversely, caspase-8 was not elevated in any of the animals analyzed. Interestingly, Bcl-x also colocalized with mucosal lesions in the MD cases. However, Bcl-x was similarly expressed in tissues from all 3 groups, and thus, its role in apoptosis needs to be clarified. This study clearly illustrates ex vivo that the activation of the intrinsic, but not the extrinsic, apoptosis pathway is a key element in the pathogenesis of MD lesions observed in cattle persistently infected with BVDV. However, whether direct induction of apoptosis in infected cells or indirect effects induced by the virus are responsible for the lesions observed remains to be established
Meeting the Romans
No full textAccording to the narrative of Acts, Saul is being introduced to the world of Rome in Cyprus by meeting the proconsul Sergius Paulus in Paphos. It is also here that for the first time his other name, Παῦλος (Paul), is mentioned and that the focus on his role in the Christ-movement for those from the nations moves to center stage. The Roman aspect of Saul/ Paul’s activities is developed from here on by the author of Acts, with numerous further encounters with Roman officials (e.g., Acts 21:37-39; 24:10-27; 25:6-12), to eventually culminate in Saul/Paul’s arrival and proclamation of the gospel with courage unhindered in Rome itself (Acts 28:31). I will argue in this chapter that in the narrative strategy of Acts, the events in Cyprus are presented as a crucial stepping stone on Paul’s way into the world of Rome and the spreading of the gospel to the center of political power
Review of <i>Second Temple Jewish Paideia in Context</i>, edited by Jason M. Zurawski and Gabriele Boccaccini
No full textDespite the impressive strides made in the past century in the understanding of Second Temple Jewish history and the strong scholarly interest in paideia within ancient Greek, Hellenistic, Roman, and late antique Christian cultures, the nature of Jewish paideia during the period has, until recently, received surprisingly little attention. The essays collected here were first offered for discussion at the Fifth Enoch Seminar Nangeroni Meeting, held in Naples, Italy, from June 30 – July 4, 2015, the purpose of which was to gain greater insight into the diversity of views of Jewish education during the period, both in Judea and Diaspora communities, by viewing them in light of their contemporary Greco-Roman backgrounds and Ancient Near Eastern influences. Together, they represent the broad array of approaches and specialties required to comprehend this complex and multi-faceted subject, and they demonstrate the fundamental importance of the topic for a fuller understanding of the period. The volume will be of particular interest to students and scholars of the history and culture of the Jewish people during the Hellenistic and Roman periods, ancient education, and Greek and Roman history. Contributors include Samuel L. Adams, Sean A. Adams, Luca Arcari, David A. deSilva, Jason von Ehrenkrook, Kathy Ehrensperger, Matthew Goff, Anders Klostergaard Petersen, Patrick Pouchelle, William M. Schniedewind, Gregory E. Sterling, Frank Ueberschaer, Elisa Uusimäki, Benjamin G. Wright, and Jason M. Zurawski
Fostering transdisciplinarity in global research networks through digital means – potentials and challenges
No full textMucosal lesions in a sheep infected with the Border Disease Virus (BDV)
No full textEin 28 Wochen altes Schaf wurde am Tierspital wegen chronischer Auszehrung, Anämie und leichtem Durchfall vorgestellt. Aufgrund des schlechten Allgemeinbefindens und der ungünstigen Prognose wurde das Tier euthanasiert und eine Sektion durchgeführt. Dorsal auf der Zunge, im Pharynx, dem harten Gaumen, im Ösophagus und auf den Pansenpfeilerrn wurden multiple Erosionen und Ulzerationen beobachtet. Histologisch stellten sich diese Läsionen als eitrig-nekrotisierende Entzündung heraus. Das Schaf war sowohl immunhistochemisch wie auch virologisch positiv für Pestivirusantigen (Zellkultur, antigen capture ELISA und RT-PCR). Ein nicht zytopathogenes Border Disease Virus wurde isoliert und die Sequenzierung liess es der BDV-3 Gruppe zuordnen. Aufgrund der makroskopischen, histologischen, immunhistologischen und virologischen Resultate wurde dieser Fall als Border Disease mit Mucosal Disease-ähnlichen Schleimhautläsionen diagnostiziert. Dies ist der erste Bericht eines solchen Falles in der Schweiz
Immunohistochemical diagnosis of persistent infection with Bovine Viral Diarrhea Virus (BVDV) on skin biopsies
No full textDetection of persistent infection with BovineViral Diarrhea Virus (BVDV) is essential for both epidemiological and clinical reasons. In addition to the classical virological methods such as virus isolation in tissue culture, ELISA and RT-PCR, immunohistochemistry of skin biopsies has become a useful and reliable tool. Assuming that the presence of BVDV antigen in skin structures is restricted to persistent infection, this method could differentiate from transient infection. In order to answer this question, 6 calves were experimentally infected orally with a non-cytopathic genotype 1 BVDV strain belonging to the subtype k.The calves developed fever, mucopurulent nasal discharge, coughing and leucopenia with relative lymphopenia. Immunohistochemistry of skin biopsies taken daily up to day 13-post infection did not reveal any evidence of BVDV infection. BVDV was, however, isolated from blood samples on cell cultures. Anti-NS3-antibody-ELISA and serum neutralization tests showed that all six calves seroconverted. We conclude that in acute BVDV infections, with genotype 1 and the subtypes found in Switzerland (b, e, h and k) viral antigen is not found in epidermal structures of the skin. In contrast, persistently infected animals test positive for BVD viral antigen by immunohistochemistry of the skin
Jatropha mahafalensis for rural energy supply in south-western Madagascar?
No full textIn many parts of the eastern African region wood-based fuels will remain dominant sources of energy in coming decades. Pressure on forests, especially in semi-arid areas will therefore continue increasing. In this context, the role of liquid biofuels as substitutes for firewood and charcoal, to help reducing pressure on woody biomass and contributing to a better energy security of rural communities, has remained controversial among researchers and practitioners. At household level, the economic and technical feasibility of straight vegetable oil (SVO) was assessed mainly on Jatropha curcas, with unpersuasive results. So far nothing is known about the suitability as an energy carrier of Jatropha mahafalensis Jum. & H. Perrier, the only endemic representative of the Jatropha genus in Madagascar. This paper explores the potential of this plant as a biofuel feedstock in the agro-pastoral area of Soalara, in the semi-arid south-western part of Madagascar. Only hedge-based production was considered to rule out competition over land with food crops. Yield data, the length of currently existing hedges and energy consumption patterns of households were used to assess the quantitative potential and economic viability of J. mahafalensis SVO for lighting and cooking. Tests were conducted with cooking and lighting devices to assess their technical suitability at household level. The paper concludes that J. mahafalensis hedges have some potential to replace paraffin for lighting (though without much economic benefit for the concerned households), but not to replace charcoal or firewood for cooking. The paper recommends that rural energy strategies in similar contexts do not focus only on substituting current fuels with SVO, but should also take into consideration other alternatives. In the case of cooking, there seems to be substantially more potential in increasing the efficiency of current fuel production and consumption technologies (kilns and stoves); and in the case of lighting, solutions based on SVO need to be compared against other options such as portable solar devices
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