1,721,063 research outputs found
Cambiamento sociale e modificazioni psicopatologiche. Risultati di un programma di ricerche in popolazioni africane
No full textPhotoinduced, ionic meerwein arylation of olefins
No full textIrradiation of 4-chloroaniline or of its N,N-dimethyl derivative in polar solvents generates the corresponding triplet phenyl cations. These are trapped by alkenes yielding arylated products in medium to good yields
Psychopathology in the Dogon Plateau: an assessment using the QDSM and principal components analysis
No full textBackground: The present paper reports the findings of principal components analysis performed on the basis of answers to the Questionnaire pour le Depistage en Santi: Mentale (QDSM) administered to subjects from the Bandiagara plateau (Mali), who had been evaluated in a previously published report. Methods: The study sample was made up of 466 subjects (253 males, 213 females), 273 of whom belonged to the Dogon ethnic group, 163 were Peul and the remaining 30 belonged to other groups (Sonrai, Bozo, Tuareg, Bambara). All subjects were submitted to QDSM, a structured interview derived from the Self Reporting Questionnaire. Data obtained were processed by means of principal components analysis, in order to obtain syndromic aggregations. Results: Eight factors with an Eigen value greater than 1 were extracted, which provided sufficient explanation for the overall variance observed among the 23 items. These factors may be termed as follows: Sadness (factor 1); Dysphoria (factor 2); Nightmares (factor 3); Persecution (factor 4); Somatic symptoms (factor 5); Special powers (factor 6); Hopelessness (factor 7); Loss of Interest (factor 8). Conclusions: The findings from this study support the hypothesis of an independence of "psychosomatic" from depressive symptoms. In particular, contrary to some evidence derived from other African studies, the present research appears to suggest a possible counterposition of these two ways of expressing depression, commonly considered as autonomous
Mental disorders and health care seeking in Bandiagara: A community survey in the Dogon plateau
No full textA two-level community study was carried out among the Peul and Dogon populations of the Bandiagara plateau (Mall). For the purpose of the study the Questionnaire pour le depistage en sante mentale (QDSM), a 23-item screening questionnaire derived from the Self-Reporting Questionnaire (SRQ), was adapted and validated; internal consistency and accuracy were evaluated. In the first phase of the study, 466 subjects randomly selected on a residential basis were evaluated by means of the QDSM. In the second phase all subjects who were ''positive'' at the screening, as well as a sample who were ''negative'', were examined by means of a semistructured interview. When necessary, clinical and laboratory investigations were performed. The estimated prevalence of psychiatric cases was 6.4%. A significant risk was associated with age and education. Somatic diseases frequently associated with psychiatric disorders were genitourinary tract disorders, tuberculosis and disabling cardiopathies. The main factor determining the seeking of medical help either through traditional or conventional health systems was the presence of a somatic disorder. The presence of a true minor psychiatric disorder, however, was often associated with divining practices
Synthesis and charaterisation of phosphorescent copper (I) complexes for light emitting devices
Full text linkThis thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Over the last decade, many significant developments have been made to improve the active materials in a new generation of organic light emitting devices (OLEDs). Current OLED technology is focused on organo-transition metal complexes, which emit from the triplet excited state and exhibit bright
phosphorescence. Efficient in devices have been reported using these luminescent
materials, such as iridium and platinum complexes, however, rare metal abundance
concerns, high price and toxicology have inspired the study of alternative
phosphorescent materials, such as copper or silver complexes. In this research, novel copper complexes have been synthesized, such as trinuclear and mononuclear copper (I) complexes, using a range of ligands, such as
alkynyl, phosphine alkynyl and pyridine ligands. The synthesised complexes have
been characterised by with a range of techniques, such as UV/Vis absorption and
emission spectroscopy, nuclear magnetic resonance (NMR), thermogravimetric
analysis (TGA), differential scanning calorimetry (DSC), cyclic voltammetry (CV) and scanning electron microscopy (SEM).
Most of the copper complexes have shown very interesting luminescent properties in solution and solid state and some of them were studied for future application in a device.Research Council of U
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“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
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