To evaluate the antinociceptive effect and the possible mechanism of action of two polar extracts of Mansoa alliacea, a medicinal plant used in Perú, Brazil, and Mexico to treat rheumatic pain, we ...used the formalin and hot-plate tests in mice. We found that ethanolic (MA-EtOH) and aqueous (MA-AQ) extracts of M. alliacea induced antinociceptive effects in both nociceptive tests. The antinociceptive efficacy of the highest dosage (300 mg/kg) of both extracts were also compared by using intraperitoneal and oral administration in the formalin test. Results showed that intraperitoneal injection of the two extracts produced better antinociceptive effects than that obtained by their oral administration. The mechanism of action involved in their antinociceptive activity was determined in the formalin test. Results showed that the presence of A784168 (TRPV1 antagonist) did not alter the antinociceptive effect induced by any of the M. alliacea extracts, whereas naltrexone (opioid antagonist) partially prevented the antinociceptive effect only of MA-EtOH in both phases of the formalin test. Furthermore, the effects of the extracts were diminished by L-NAME (inhibitor of nitric oxide synthase), but not by ODQ (inhibitor of the soluble guanylyl cyclase) or glibenclamide (blocker of K+ATP channels) in the neurogenic phase. However, the effect of MA-AQ was diminished by all the inhibitors in the inflammatory phase. These results support the use of M. alliacea as a potential natural product with efficacy for pain relief depending on the form of preparation and the route of administration by involving opioid receptors and the production of nitric oxide.
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•Polar extracts of Mansoa alliacea produced antinociception in two nociceptive tests.•Antinociception of extracts was better by i.p. than p.o. administration.•Opioid but not TRPV1 receptors are involved in the antinociception of extracts.•ON is involved in the effect of extracts on neurogenic phase of the formalin test.•Extracts of M. alliacea did not induce adverse effects in acute administration.
Exploring News Tagging on Spanish Digital Press Domínguez‐Delgado, Rubén; López‐Hernández, María‐Ángeles; Muñoz‐García, Francisco‐Javier
Proceedings of the Association for Information Science and Technology,
10/2022, Letnik:
59, Številka:
1
Journal Article
Recenzirano
ABSTRACT
A proper news tagging is essential for a suitable search and retrieval of information by news libraries users, as well as for a suitable web SEO positioning of these media outlets, what is ...an aspect to take increasingly into account in digital journalism. Through a case study, we carried out a comparative exploratory analysis on how the most read Spanish online newspapers assign the tags which identify the informational content of their news, given the scarcity of this kind of empirical studies and the enormous importance of this task in the field of news librarianship. The resulting data demonstrate the need for specific training in news librarianship for journalists and the importance of educating media outlets in using controlled vocabularies to ensure an efficient retrieval of news in databases a posteriori.
Se hace un recorrido histórico por las diversas intervenciones de los organismos públicos internacionales, especialmente europeos, en el ámbito de la documentación fílmica, desde la gestación, ...durante la década de los años setenta del siglo XX, de las Recomendaciones para la Salvaguarda y Conservación de las Imágenes en Movimiento publicadas por la Unesco en 1980 hasta la actualidad. En los dictámenes fijados por estos organismos oficiales se abordan diferentes asuntos de interés relacionados con la preservación, gestión documental y accesibilidad del patrimonio cinematográfico.
ABSTRACT
In light of the dearth of empirical studies of the quality of the databases of Spanish digital newspapers, this paper delves into the issue. Accordingly, the databases of 55 Spanish digital ...general newspapers were examined for the purpose of determining the quality of their retrospective written news search engines and retrieval systems. The results indicate the following: (1) the vast majority of the databases analysed employ search models based exclusively on a calendar or text box, thus hindering the selective retrieval of information; (b) a large proportion of these databases do not allow users to employ several fields in order to filter and narrow down their searches; and (3) all the online news databases lack search guides and controlled vocabularies or thesauruses. From these finding it is possible to infer that the majority of the databases of the Spanish digital press are, as a rule, rudimentary and inefficient.
ABSTRACT
In the current context of state policies characterized by hefty budget cuts affecting film preservation, thus seriously jeopardizing our film heritage and clashing with the pronouncements ...made by the UNESCO in 1980, our intention here is to analyze two texts published in Paris in 1898 by the eulogizing, but otherwise unknown, Pole Boleslaw Matuszewski: A New Source of History and Animated Photography, What Is, What Should Be. Although they have not received the recognition that they deserve, both works were crucial to the history of film insofar as they would play a vital role in film preservation as a cultural heritage.
Nuestro objetivo ha sido indagar cuáles serían los criterios selectivos más apropiados para aplicar a los documentos fotoperiodísticos. Para ello, en primer lugar, hemos recopilado y filtrado los ...criterios selectivos recomendados por numerosos autores consultados, a fin de proponer un método, basado en siete criterios selectivos, que pueda resultarle útil al selector de fotografías de prensa. En segundo lugar, hemos ensayado nuestro modelo de selección, utilizando un corpus de 264 documentos fotoperiodísticos extraídos de los diarios españoles El País y El Mundo, al objeto de explorar su aplicabilidad real y el valor, individual y colectivo, de cada uno de los criterios selectivos aplicados. Los resultados apuntan a una mayoritaria eliminación de las fotografías de prensa analizadas, debido a factores tales como la poca producción propia, la poca originalidad, la poca actualidad, el poco valor testimonial o el escaso valor para la investigación.
We carried out a bibliometric study on web activism, given their absence, for the period between 2007 and 2018, using as a source the Cibermov bibliographic database, created by the documentation ...service linked to the R&D project Cyber‐activism, digital citizenship and new urban movements, funded by the Government of Spain, as a tool for its members.
El análisis de contenido fílmico es una importante tarea documental que ha sido relegada al olvido en nuestro país por parte de los archivos fílmicos y de los teóricos de la documentación ...audiovisual. Mientras que en los principales centros de documentación televisivos españoles los usuarios pueden ya recuperar selectivamente la información audiovisual, satisfacer esta necesidad informativa no es posible en las filmotecas españolas, algo que se debe en parte a la carencia de propuestas analíticas. Para cubrir este vacío, realizamos el esbozo teórico de un método de análisis de contenido fílmico, tanto a nivel global como escena a escena, para películas documentales de no ficción, producto de reunir las diferentes contribuciones de los documentólogos audiovisuales españoles de las últimas décadas. Al mismo tiempo, aplicamos el método propuesto al largometraje documental 200 Km. (Colectivo Discusión 14, 2003) y valoramos la utilidad y eficacia del método de acuerdo con los resultados obtenidos tras esta primera aplicación experimental.
ABSTRACT
In the field of library and information science, content analysis is a crucial task for an effective retrieval of information by users at an archive. In this research, we analyse the current ...state of this task and the possibilities of retrieval of film information at six Spanish important film archives, interviewing their responsible librarians for film cataloguing and comparing the content fields inside their film cataloguing records used by each one of these six organizations.
Purpose. The selection of films that archivists carry out today has an important impact on the future configuration of digitalised and virtually accessible film collections. Given the responsibility ...that this task entails, we consider it interesting to explore what the different profiles of the users of film archives think about selection and digitisation of films.
Approach/Methodology/Design. To this end, structured interviews were conducted with 31 subjects belonging to four groups of users: film researchers, film professionals, journalists/ film critics, and last year audio-visual communication undergraduates from the Universityof Seville.
Findings. The most notable results, which do not differ in essence from what is known in the archival field, include, on the one hand, the unanimous view that digitisation is an effective way of conserving audio-visual memory and fostering public interest in film collections and archives and, on the other, that when films have to be selected for their digitisation, this should be done following rigorous and systematic selection criteria, thus avoiding the detrimental effects of random methods. Lastly, some future research lines are offered.
Originality/Value. All the bibliography consulted view topics relating to film selection and digitisation exclusively through the prism of archival and library and information sciences. Namely, these studies are restricted to these specific areas of knowledge and aimed at professional and experts in the field. For that reason, it may be interesting to explore other viewpoints and perspectives that go beyond purely technical, theoretical or methodological approach to film curation.
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