992 resultados para sodat - 1710
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Mode of access: Internet.
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Mode of access: Internet.
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v. 1-10, 304506-15.
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Mode of access: Internet.
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Translation of: Journal des observations physiques, mathematiques et botaniques
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Mode of access: Internet.
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Edited and published by authority of the Library Board, Virginia State Library.
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Mode of access: Internet.
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Contains the reports of the Record Society for the years 1888/9 and 1889/90.
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"Oratio habita ... in funere ... Caroli Thomae Maillard de Tournon ... a Carolo Majello": p. [51]-70.
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"Ouvrage reconnu apocryphe, et dont l'auteur est un prétendu comte de Courchamps, dont le nom véritable est Causen (de Saint-Malo)" Nouv. biog. gén., t. 12; Encycl. brit., 11th ed., vol. VII, p. 411, and Quérard, Superchéries litt., v. 1, p. 290, give the form Cousin.
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Legislation conferring exclusive rights upon the author of books not yet printed or published for a period of 14 years and for a further 14 years if the author was still alive at the end of the first period. The legislation also provided the same rights for the authors or owners of books already in print for a single 21 year term.
The commentary describes the background to the Act detailing the manner in which the legislation was amended as it passed through parliament, and highlights particular flaws in the drafting. The commentary argues that, although the Act sought to both secure the interests of the Stationers while at the same time regulating the general operation of the book trade, the primary concern of the legislature lay in the encouragement and advancement of learning.
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This study investigated the disclosure of HIV-positive serostatus to sexual partners by heterosexual and bisexual men, selected in centers for HIV/AIDS care. In 250 interviews, we investigated disclosure of serostatus to partners, correlating disclosure to characteristics of relationships. The focus group further explored barriers to maintenance/establishment of partnerships and their association with disclosure and condom use. Fear of rejection led to isolation and distress, thus hindering disclosure to current and new partners. Disclosure requires trust and was more frequent to steady partners, to partners who were HIV-positive themselves, to female partners, and by heterosexuals, occurring less frequently with commercial sex workers. Most interviewees reported consistent condom use. Unprotected sex was more frequent with seropositive partners. Suggestions to enhance comprehensive care for HIV-positive men included stigma management, group activities, and human rights-based approaches involving professional education in care for sexual health, disclosure, and care of "persons living with HIV".
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We have synthesized phenylene-vinylene (PV) polymers containing segments with different conjugation lengths interspaced by random distributed aliphatic segments. Infrared (IR) and ultraviolet-visible (UV-vis) spectroscopies, hydrogen nuclear magnetic resonance ((1)H NMR) spectrometry and differential scanning calorimetry (DSC) were used to characterize the prepared copolymers` structures. Polymers molecular weights were determined by gel permeation chromatography (GPC). The effect of polymer structure and composition on emission properties was studied by fluorescence (PL) spectroscopy under different irradiation wavelength. The emission energy shift due to segments with longer conjugation lengths was minor owed to the low polymerization degree achieved.
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Baccharis dracunculifolia is the most important vegetal source of propolis in southeast Brazil, and researchers have been investigating its biological properties. Propolis is a complex resinous hive product collected by bees from several plants, showing a very complex chemical composition. It has been employed since ancient times due to its therapeutic properties, such as antimicrobial, anti-inflammatory, antioxidant, immunomodulatory and antitumour activities, among others. The goal of this work was to compare the cytotoxic action of B. dracunculifolia, propolis and two isolated compounds (caffeic and cinnamic acids) on human laryngeal epidermoid carcinoma (HEp-2) cells in vitro. These cells were incubated with different concentrations of each variable, and cell viability was assessed by the crystal violet method. Lower concentrations of B. dracunculifolia (extract and essential oil), propolis, as well as caffeic and cinnamic acids, showed no cytotoxic activity against HEp-2 cells. On the other hand, elevated concentrations (50 and 100 mu g per 100 mu L) exerted a cytotoxic action, and propolis showed a more efficient action than its vegetal source and isolated compounds. Further investigation is still needed in order to explore the potential of these variables as antitumour agents and to understand their mechanisms of action.