196,939 research outputs found
M-learning: mobile phones’ appropriateness and potential for the training of laboratory technicians in limited-resource settings
No full textAs previously demonstrated, m-phones can be easily used, without any adapter, to photograph and send images from a microscope. The objective of the current study was to test the appropriateness and educational potential of this mobile diagnosis approach with health workers in limited-resource settings, such as health units in Uganda, Bangladesh and Afghanistan. A total of 61 lab technicians were trained in basic lab skills and in using the m-phone to capture microscopic images and send them to distant Reference Centers for a second opinion. Structured pre-test interviews were used to define parameters such as health workers’ sex and age, duty station, schooling, experience in the laboratory, access to internet and availability to and use of m-phones. Images from the microscope were also uploaded on the available computers and shared on the screen to facilitate group discussions and comparisons with reference images. Standard instructions were then elaborated and tested with totally inexperienced people. Results showed that use of integrated camera m- phones was widespread. Mobile Messaging Service (MMS) was commonly accessible, however, not used. Neither m- microscopy, nor clinical use of m-phones was previously known among local health workers. A standard written procedure, without any additional verbal instruction, was enough to easily learn to take pictures of the microscope amples, even for the most inexperienced person. The possibility to share images on the m-phone and/or a computer screen, and the group discussions proved to be phenomenal educational tools
Mobile cell-phones (M-phones) in telemicroscopy: increasing connectivity of isolated laboratories
No full textAbstract Background The development of modern information telecommunication (ITC) technology and its use in telemedicine plays an increasingly important role in facilitating access to some diagnostic services even to people living in the most remote areas. However, physical and economical constraints in the access to broad band data-transmission network, still represent a considerable obstacle to the transmission of images for the purpose of tele-pathology. Methods Indifferently using m-phones of different brands, and a variety of microscopic preparations, images were taken without the use of any adaptor simply approaching the lens of the mobile cell phone camera to the ocular of common optical microscopes, and subsequently sent via Multimedia Messaging Services (MMS) to distant reference centres for tele-diagnosis. Access to MMS service was reviewed with specific reference to the African information communication technology (ICT) market. Results Images of any pathologic preparation could be captured and sent over the mobile phone with an MMS, without being limited by appropriate access to the internet for transmission (i.e. access to broad-band services). The quality of the image was not influenced by the brand or model of the mobile-phone used, but only by its digital resolution, with any resolution above 0.8 megapixel resulting in images sufficient for diagnosis. Access to MMS services is increasingly reaching remote disadvantaged areas. Current penetration of the service in Africa was mapped appearing already available in almost every country, with penetration index varying from 1.5% to 92.2%. Conclusion The use of otherwise already widely available technologies, without any need for adaptors or otherwise additional technology, could significantly increase opportunities and quality diagnostics while lowering costs and considerably increasing connectivity between most isolated laboratories and distant reference center.</p
C. GOLDONI, Drammi per musica, sito internet, a cura di D. Albanese (progetto grafico), A. L. Bellina (progetto scientifico e cura dei testi), M. I. Biggi (ricerca iconografica), L. Tessarolo (progetto informatico), S. Urbani e A. Vencato (cura dei testi) (carlogoldoni.it), 2015.
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Intrusioni in un compito di memoria di lavoro: E' solo un effetto categoria?
No full textNella prova di memoria di lavoro proposta da De Beni, Palladino, Pazzaglia
e Cornoldi (1998) il termine intrusione si riferisce a informazioni erroneamente inserite nel ricordo finale. Il numero di intrusioni è considerato solitamente come misura dell’efficienza del processo di controllo in memoria di lavoro, in quanto alcune ricerche hanno mostrato che soggetti con scarsa memoria di lavoro producono un maggior numero di intrusioni e in particolare intrusioni di parole maggiormente attivate. Nel test di span, le parole maggiormente attivate sono però anche parole appartenenti ad una stessa categoria. Introducendo nel test come controllo parole appartenenti ad una seconda categoria, abbiamo voluto valutare in che misura il maggior numero di intrusioni delle parole maggiormente elaborate, prodotto in questo tipo di compito, sia dovuto al fatto che queste sono più accessibili perché appartengono ad una ben specificata categoria
Total synthesis of rubrolide M and some of its unnatural congeners
No full textTwo protocols have been developed for the Pd-catalyzed regioselective synthesis of 4-aryl-3-chloro-2(5H)-furanones starting from 3,4-dichloro-2(5H)-furanone. These monochloro derivatives have then been used as precursors to (Z)-4-aryl-5-[I(aryl)methylidenel-3-chloro-2(5H)-furanones including naturally-occurring rubrolide M. (C) 2002 Elsevier Science Ltd. All rights reserved
Cinque argomenti nel «Saggio» sull'opera, in atti del convegno Nel terzo centenario della nascita di Francesco Algarotti (1712-1764), a cura di M. Pastore Stocchi e G. Pizzamiglio, Venezia, Istituto Veneto di Scienze, Lettere ed Arti, 2014, pp. 57-74.ISBN 9788895996462
No full textThe first description of how to take a picture from the microscope with an m-phone
No full textThe letter to the editor reaffirms the primacy of the authors in being the first to describe using mobile phone cameras to capture microscope images by focusing the camera of the phone through the microscope ocular and describing the techniqu
Analisi delle misure delle prestazioni dei cavi superconduttori per il progetto ITER
No full textQuesto studio è mirato alla definizione di un protocollo standard di elaborazione dei dati sperimentali relativi alle tensioni misurate sul condotto dei cavi superconduttori di ITER nelle prove di qualificazione. Tali prove sono mirate alla determinazione della cosiddetta temperatura di current sharing, in corrispondenza della quale si sviluppa lungo il cavo un campo critico convenzionale pari a 10 microV/m, nelle condizioni operative di campo di induzione magnetica e corrente di trasporto. Un ulteriore argomento di analisi è costituito dallo studio di diverse tecnologie di realizzazione del giunto tra i cavi superconduttori. Sono state confrontate le tre principali tecnologie sperimentate nei campioni recentemente provati, realizzando modelli accurati della ripartizione di corrente imposta dalla giunzione e analizzando sia gli effetti che tali configurazioni hanno sulle tensioni misurate lungo il condotto del cavo, sia le costanti di tempo dei transitori elettrodinamici che si instaurano nel cavo durante le prove in presenza di giunti diversi
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