86,528 research outputs found
New concepts for the development of lithium and proton conducting membranes
No full textA new approach for the development of lithium and proton conducting electrolyte membrane is here reported and discussed. Basically, the lithium polymer electrolyte is prepared by swelling a PVdF "precursor membrane" with a LiPF 6 solution in EC-PC. Similarly, the proton polymer electrolytes are obtained by swelling a ceramic-added composite PVdF-based membrane in a H 3PO 4 aqueous solution. The results, even if in a preliminary stage, confirm that the membrane technology used for lithium can be extended to the proton case. The PVdF-based, acid-swelled membranes show high values of ionic conductivity and good thermal properties and thus, they appear of interest for practical applications, e.g. fuel cells. © 2003 Elsevier Science Ltd. All rights reserved
Lithium and proton conducting gel-type membranes
No full textWe review the characteristics and the properties of various types of gel-type, ionically conducting membranes. We have mainly investigated two classes of membranes, one characterized by lithium ion transport and the other characterized by proton conductivity. We show that the former membranes are suitable to be used as separators in advanced lithium ion plastic batteries and that the latter show good promises to be considered as alternative, new separators in polymer electrolyte fuel cells. © 2003 Elsevier B.V. All rights reserved
Calcifications in prostate cancer: An active phenomenon mediated by epithelial cells with osteoblast-phenotype
No full textThe main aim of this study was to investigate putative correlation between the formation of prostate calcifications and the presence of cancer cells showing the ultrastructural and morphological aspects of osteoblasts. To this end, 40 prostate biopsies of prostate cancer were enrolled and investigated from histological, immunohistochemical, and ultrastructural point of view. To the best of our knowledge, this is the first study to propose a new cell type related to the ectopic calcifications in prostate tissue, the prostate osteoblast-like cells (POLCs). Although our data require further investigations about the molecular mechanisms of both POLCs Cells generation and calcification formation, this study can open new and interesting prospective in the management of prostate cancer patients. In fact, if our data will be validated in large-cohort studies, the presence of POLCs Cells and/or prostate calcifications could become a poor negative prognostic marker for cancer occurrence due to the correlation between the presence of POLCs Cells and epithelial to mesenchymal transition phenomenon
Studio del profilo premorboso circadiano del sonno e delle attività in pazienti affetti da disturbi depressivi
No full textCharacterisation oh harbour and coastal sediments: specific destinations of dredged material
No full textStudio nell'Italia Centrale sull'uso degli antipsicotici atipici in SPDC. Risposta dimensionale al trattamento con aloperidolo e risperidone in pazienti psicotici acuti
No full textResponse to ECT in depressive subtypes and mixed state
No full textObjectives
Available literature data suggest the efficacy of electroconvulsive therapy (ECT) in a large spectrum of depressive disorders, but the results often turn-out to be in contrast with each other. We explored differences of response to ECT in unipolar depression, bipolar depression and mixed state in a sample of patients resist- ant to pharmacological treatment.
Methods
130 patients (17 with major depressive disorder (UP), 67 with major depressive episode in bipolar disorder type II (BP II), 46 with major depressive episode in bipolar disorder type I (BP I) and 50 with mixed state (MS) according to the DSM-IV crite- ria) were included in the study and treated with bilateral ECT, on a twice-a-week schedule. The patients were assessed before (baseline) and one week after the ECT course (final score), using the Hamilton Rating Scale for Depression (HAM-D), Young Mania Rating Scale (YMRS), Brief Psychiatric Rating Scale (BPRS) and the Clinical Global Impressions scale (CGI).
Results
The four groups (UP, BP II, BP I and MS) showed a significant improvement after the ECT course with comparable response rates in all groups. Remission rate, evaluated with the CGI and the HAM-D scales, was significantly higher in UP compared to the other 3 groups.
Conclusions
ECT should not be disregarded as an effective therapeutic option for the treatment of unipolar and bipolar depressive and mixed pa- tients resistant to pharmacological treatment. MS and BP I tended to exhibit more residual agitation and psychotic features than UP
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
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