101 research outputs found
Colourants on the wall paintings of a mediӕval fortress at the mount Sofeh in Isfahan, central Iran
Colourants on the twelfth century wall paintings excavated at the fortress located on the mount Sofeh in Isfahan, central Iran, were analysed using micro X-ray fluorescence (µ-XRF), micro Raman spectroscopy (µ-Raman) and high-performance liquid chromatography coupled to electrospray ionization quadropole time-of-flight (HPLC-ESI-Q-TOF). The results of the analyses showed that gypsum, atacamite, carbon black, orpiment and ultramarine blue were used as white, green, black, yellow and blue pigments, respectively. Moreover, three red colourants including red lead, red vermilion and madder red were identified in the wall paintings. Furthermore, possible sources for the colourants are discussed
Relationship between the usage count and the number of citations in the journals of Library and Information Sciences: The case of access type
Nowadays, the open access movement has become one of the most effective to make upto- date information accessible to users. This study aimed at examining the relationship between the usage count and the number of citations of library and information sciences articles emphasizing on access type and the study used document analysis and scientometrics based on journals in the Web of Science. Openaccess journals (six journals with 60 articles) and non-open access journals (ten journals with 100 articles) were selected. The www.simagojr.com site was checked to get ensured about the field of journals. The findings indicated among openaccess journals, "Information Research-An International Electronic Journal"and "Information Technology and Libraries" were the oldest and had the highest number of articles. The average number of citations was related to Transinformacao (3.3) and Journal of the Medical Library Association (112.4). The use of open access journals varied between 10.1 (Information Research) and 17.9 (Revista Espanola de Documentacion Cientifica) since 2013. Accordingly, there was no significant relationship between the usage countof the articles in open access journals and the number of citations. Among the non-open access journals, the"International Journal of Information Management" was the oldest. The average number of citations was between 120.1 for the "International Journal of Information Management" and 709.4 for"Information System Research". The extent of using non-open access journals varied between 26.1 for "Journalofthe American Medical Informatics Association" and 181 for the "Journal of Computer -Mediated Communication".There was significant relationship between using the articles in non-open access journals and the number of citations. The total correlation for open-access journals and non-open access journals were 0.23 and 0.40, respectively. The correlation for each journal of any access type was weak to strong. © 2019 Library Philosophy and Practice
The effect of the eye movement desensitization and reprocessing intervention on anxiety and depression among patients undergoing hemodialysis: A randomized controlled trial
Author's accepted version (postprint).This is an Accepted Manuscript of an article published by Wiley in Perspectives in psychiatric care on 29/04/2019.Available online: https://onlinelibrary.wiley.com/doi/epdf/10.1111/ppc.12389acceptedVersio
Hospital outbreak of carbapenem-resistant Enterobacterales associated with a bla OXA-48 plasmid carried mostly by Escherichia coli ST399
A hospital outbreak of carbapenem-resistant Enterobacterales was detected by routine surveillance. Whole genome sequencing and subsequent analysis revealed a conserved promiscuous blaOXA-48 carrying plasmid as the defining factor within this outbreak. Four different species of Enterobacterales were involved in the outbreak. Escherichia coli ST399 accounted for 35 of all the 55 isolates. Comparative genomics analysis using publicly available E. coli ST399 genomes showed that the outbreak E. coli ST399 isolates formed a unique clade. We developed a mathematical model of pOXA-48-like plasmid transmission between host lineages and used it to estimate its conjugation rate, giving a lower bound of 0.23 conjugation events per lineage per year. Our analysis suggests that co-evolution between the pOXA-48-like plasmid and E. coli ST399 could have played a role in the outbreak. This is the first study to report carbapenem-resistant E. coli ST399 carrying blaOXA-48 as the main cause of a plasmid-borne outbreak within a hospital setting. Our findings suggest complementary roles for both plasmid conjugation and clonal expansion in the emergence of this outbreak
New approach for time-resolved and dynamic investigations on nanoparticles agglomeration
Nanoparticle (NP) colloidal stability plays a crucial role in biomedical application not only for human and environmental safety but also for NP efficiency and functionality. NP agglomeration is considered as a possible process in monodispersed NP colloidal solutions, which drastically affects colloidal stability. This process is triggered by changes in the physicochemical properties of the surrounding media, such as ionic strength (IS), pH value, or presence of biomolecules. Despite different available characterization methods for nanoparticles (NPs), there is a lack of information about the underlying mechanisms at the early stage of dynamic behaviors, namely changing in NP size distribution and structure while placing them from a stable colloidal solution to a new media like biological fluids. In this study, an advanced in situ approach is presented that combines small angle X-ray scattering (SAXS) and microfluidics, allowing label-free, direct, time-resolved, and dynamic observations of the early stage of NP interaction/agglomeration initiated by environmental changes. It is shown for silica NPs that the presence of protein in the media enormously accelerates the NP agglomeration process compared to respective changes in IS and pH. High IS results in a staring agglomeration process after 40 min, though, in case of protein presence in media, this time decreased enormously to 48 s. These time scales show that this method is sensitive and precise in depicting the dynamics of fast and slow NP interactions in colloidal conditions and therefore supports understanding the colloidal stability of NPs in various media concluding in safe and efficient NP designing for various applications
FILTWAM and Voice Emotion Recognition
This paper introduces the voice emotion recognition part of our framework for improving learning through webcams and microphones (FILTWAM). This framework enables multimodal emotion recognition of learners during game-based learning. The main goal of this study is to validate the use of microphone data for a real-time and adequate interpretation of vocal expressions into emotional states were the software is calibrated with end users. FILTWAM already incorporates a valid face emotion recognition module and is extended with a voice emotion recognition module. This extension aims to provide relevant and timely feedback based upon learner's vocal intonations. The feedback is expected to enhance learner’s awareness of his or her own behavior. Six test persons received the same computer-based tasks in which they were requested to mimic specific vocal expressions. Each test person mimicked 82 emotions, which led to a dataset of 492 emotions. All sessions were recorded on video. An overall accuracy of our software based on the requested emotions and the recognized emotions is a pretty good 74.6% for the emotions happy and neutral emotions; but will be improved for the lower values of an extended set of emotions. In contrast with existing software our solution allows to continuously and unobtrusively monitor learners’ intonations and convert these intonations into emotional states. This paves the way for enhancing the quality and efficacy of game-based learning by including the learner's emotional states, and links these to pedagogical scaffolding.The Netherlands Laboratory for Lifelong Learning (NELLL) of the Open University of the Netherlands
The ADAMJI Project: an Archaeological Digital Archive and Gis For The Friday Mosque At Isfahan: a Way Forward
The article written in collaboration with dr. Fariba Saiedi Anaraki of the Iranian Cultural, Handicraft and Tourism Heritage Organization, is dealing with the theoretical and methodological aspects of the ADAMJI project, a joint Iranian/Italian project aimed at digitizing all the graphic, photographic and paper data of the Italian Archaeological Mission at the Friday Mosque of the 70s of the last century
- …