34 research outputs found
Spinal cord infarction due to fibrocartilaginous embolization: the role of diffusion weighted imaging and short-tau inversion recovery sequences.
No full textFibrocartilaginous embolization is a rare cause of ischemic myelopathy caused by embolization of intersomatic disk nucleus pulposus into spinal vasculature during Valsalva-like maneuvers. Diagnostic criteria are based on patients clinical history, magnetic resonance evidence of T2-hyperintense spinal cord lesion, and exclusion of other causes of ischemic myelopathy. These criteria do not take into account the development of magnetic resonance techniques able to enhance signal abnormalities within the neighboring intersomatic disc or vertebral body and to early characterize central nervous system lesions according to the presence of cytotoxic edema. We present 2 pediatric cases of progressive paraplegia attributed to fibrocartilaginous embolization in which short-tau inversion recovery and diffusion-weighted imaging sequences played a pivotal role showing the ischemic nature of spinal cord lesions. Due to its specificity, diffusion-weighted imaging should be included in the magnetic resonance criteria of fibrocartilaginous embolization and in standard magnetic resonance analysis when dealing with acute transverse myelopathy. © The Author(s) 2010
Limited Proteolysis in Microorganisms
No full textPhyllis Braun (with R.A. Calderone) is a contributing author, Proteolytic regulation of chitin synthetase in hyphal and yeast forms of Candida albicans , pp. 135-138.https://digitalcommons.fairfield.edu/biology-books/1010/thumbnail.jp
Franchir la rampe pour franchir les ans. Auguste Vacquerie et l’impasse du Romantisme dans les années 1840
No full textLe jeune dramaturge Auguste Vaquerie aspire à se faire une place parmi les figures littéraires et théâtrales de son temps. À cette fin, il tente de faire preuve d’audace dramaturgique, notamment par la suppression du « quatrième mur », d’abord dans sa pièce Antigone (1844) ; mais l’accueil consensuel fait à cette pièce pousse Vaquerie à une seconde tentative avec Tragaldabas (1848), cherchant cette fois à provoquer les spectateurs. En définitive, c’est la médiatisation de Tragaldabas dans la presse qui servira les ambitions de son auteur.The young playwright Auguste Vaquerie aspired to make a place for himself among the literary and theatrical figures of his time. To this end, he tried to show dramatic audacity, notably by removing the “fourth wall,” first in his play Antigone (1844) ; but the consensual reception given to this play pushed Vaquerie to a second attempt with Tragaldabas (1848), this time seeking to provoke the audience. In the end, it is the media coverage of Tragaldabas in the press that will serve the ambitions of its author
Direct integration of load time history for glass design
No full textThis thesis was scanned from the print manuscript for digital preservation and is copyright the author.
Researchers can access this thesis by asking their local university, institution or public library to
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Adaptation and integration of migrants in russia: experience of migration centers and organizations in sverdlovsk oblast
No full textВ связи с недавними изменениями российского законодательства, посвященного адаптации и интеграции мигрантов, исполнением новых правил и стандартов занимаются государственные и общественные институты. Однако по сообщениям средств массовой информации при реализации нового закона возникают проблемы. Используя полуструктурированные интервью с сотрудниками центров и организаций, работающих над темой миграции, автор рассматривает опыт таких учреждений в Свердловской области. При помощи информации, полученной в ходе опросов, удалось проанализировать местную ситуацию и сформулировать выводы о роли таких институтов в процессах адаптации и интеграции мигрантов.In connection with recent changes in Russian law on the adaptation and integration of migrants, governmental and civil society institutions have been engaging in the execution of these new rules and standards. However, according to media sources, problems have arose in the implementation of the new law. Using semi-structured interviews with staff of centers and organizations working on the topic of migration, the author considers the experience of such establishments in the Sverdlovsk region. With the help of information collected from the interviews, the local situation is analyzed, and conclusions are formulated on the role of such institutions in the adaptation and integration of migrants
A Multitude of Linguistically-rich Features for Authorship Attribution
No full textInternational audienceThis paper reports on the procedure and learning models we adopted for the 'PAN 2011 Author Identification' challenge targetting real-world email messages. The novelty of our approach lies in a design which combines shallow characteristics of the emails (words and trigrams frequencies) with a large number of ad hoc linguistically-rich features addressing different language levels. For the author attribution tasks, all these features were used to train a maximum entropy model which gave very good results. For the single author verification tasks, a set of features exclusively based on the linguistic description of the emails' messages was considered as input for symbolic learning techniques (rules and decision trees), and gave weak results. This paper presents in detail the features extracted from the corpus, the learning models and the results obtained
A Multitude of Linguistically-rich Features for Authorship Attribution
No full textInternational audienceThis paper reports on the procedure and learning models we adopted for the 'PAN 2011 Author Identification' challenge targetting real-world email messages. The novelty of our approach lies in a design which combines shallow characteristics of the emails (words and trigrams frequencies) with a large number of ad hoc linguistically-rich features addressing different language levels. For the author attribution tasks, all these features were used to train a maximum entropy model which gave very good results. For the single author verification tasks, a set of features exclusively based on the linguistic description of the emails' messages was considered as input for symbolic learning techniques (rules and decision trees), and gave weak results. This paper presents in detail the features extracted from the corpus, the learning models and the results obtained
Utilizing an Artificial Outcrop to Scaffold Learning Between Laboratory and Field Experiences in a College-Level Introductory Geology Course
No full textabstract: Geologic field trips are among the most beneficial learning experiences for students as they engage the topic of geology, but they are also difficult environments to maximize learning. This action research study explored one facet of the problems associated with teaching geology in the field by attempting to improve the transition of undergraduate students from a traditional laboratory setting to an authentic field environment. Utilizing an artificial outcrop, called the GeoScene, during an introductory college-level non-majors geology course, the transition was studied. The GeoScene was utilized in this study as an intermediary between laboratory and authentic field based experiences, allowing students to apply traditional laboratory learning in an outdoor environment. The GeoScene represented a faux field environment; outside, more complex and tangible than a laboratory, but also simplified geologically and located safely within the confines of an educational setting. This exploratory study employed a mixed-methods action research design. The action research design allowed for systematic inquiry by the teacher/researcher into how the students learned. The mixed-methods approach garnered several types of qualitative and quantitative data to explore phenomena and support conclusions. Several types of data were collected and analyzed, including: visual recordings of the intervention, interviews, analytic memos, student reflections, field practical exams, and a pre/post knowledge and skills survey, to determine whether the intervention affected student comprehension and interpretation of geologic phenomena in an authentic field environment, and if so, how. Students enrolled in two different sections of the same laboratory course, sharing a common lecture, participated in laboratory exercises implementing experiential learning and constructivist pedagogies that focused on learning the basic geological skills necessary for work in a field environment. These laboratory activities were followed by an approximate 15 minute intervention at the GeoScene for a treatment group of students (n=13) to attempt to mitigate potential barriers, such as: self-efficacy, novelty space, and spatial skills, which hinder student performance in an authentic field environment. Comparisons were made to a control group (n=12), who did not participate in GeoScene activities, but completed additional exercises and applications in the laboratory setting. Qualitative data sources suggested that the GeoScene treatment was a positive addition to the laboratory studies and improved the student transition to the field environment by: (1) reducing anxiety and decreasing heightened stimulus associated with the novelty of the authentic field environment, (2) allowing a physical transition between the laboratory and field that shifted concepts learned in the lab to the field environment, and (3) improving critical analysis of geologic phenomena. This was corroborated by the quantitative data that suggested the treatment group may have outperformed the control group in geology content related skills taught in the laboratory, and supported by the GeoScene, while in an authentic field environment (p≤0.01, δ=0.507).Dissertation/ThesisEd.D. Educational Leadership and Policy Studies 201
Changes in eggshell ultrastructure of Falco naumanni and Tyto alba exposed to pesticides and polychlorinated biphenyls (PCBs)
No full textChanges in the quality of eggs of birds exposed to environmental contaminants have been described, but few reports concern eggshell ultrastructure. In this study, infertile or addled Lesser Kestrels (Falco naumanni) and Barn owls (Tyto alba) eggs were collected from the polluted area of Gela plain (Sicily) during 2007, and compared in terms of organophosphate and organochlorine pesticides, and PCBs levels, and eggshell ultrastructure as determined by scanning electron microscopy. Pesticide and PCB residues in eggs were determined by Gas chromatography/ mass spectrometry (GC/MS) [GC Agilent 7890A/MS Agilent 5975C (Agilent technologies) using a DB-5 capillary column in the selected ion monitoring mode]. The GC/MS analysis revealed that eggs contained measurable amounts of some pesticides and PCBs. There was a low detection of organophosphate pesticides while the most abundant organochlorine residues detected were p,p’ DDT, p,p’ DDE, and Hexachlorobenzene. While, the most abundant PCBs detected congeners were PCB 138, 153, 170, 180, and 187. Although the general structure of the eggshell layers was maintained, the results showed ultrastructural differences in mammillary and palisade eggshell layers between high level and low level contaminated eggs in Tyto alba. Furthermore, mammillary cores of the eggshell had an increased distance between themselves with respect to well organized structures present in uncontaminated egg. In this paper we verify the presence of environmental contaminants in the eggs and document structural changes in bird of prey eggshells. The data could suggest that some contaminants can contribute to reduced reproductive performance (infertile or addled egg) by structural changes in the eggshell. The alteration in morphological disposition of mammillary cores could also suggest an impairment of gas exchange
Cellular responses of Candida albicans to phagocytosis and the extracellular activities of neutrophils are critical to counteract carbohydrate starvation, oxidative and nitrosative stress
No full textAcknowledgments We thank Alexander Johnson (yhb1D/D), Karl Kuchler (sodD/D mutants), Janet Quinn (hog1D/D, hog1/cap1D/D, trx1D/D) and Peter Staib (ssu1D/D) for providing mutant strains. We acknowledge helpful discussions with our colleagues from the Microbial Pathogenicity Mechanisms Department, Fungal Septomics and the Microbial Biochemistry and Physiology Research Group at the Hans Kno¨ll Institute (HKI), specially Ilse D. Jacobsen, Duncan Wilson, Sascha Brunke, Lydia Kasper, Franziska Gerwien, Sea´na Duggan, Katrin Haupt, Kerstin Hu¨nniger, and Matthias Brock, as well as from our partners in the FINSysB Network. Author Contributions Conceived and designed the experiments: PM HW IMB AJPB OK BH. Performed the experiments: PM CD HW. Analyzed the data: PM HW IMB AJPB OK BH. Wrote the paper: PM HW OK AJPB BH.Peer reviewe
