Search results for " method"

Progress in analysis of residual antibacterials in food

2007

Abstract Residual antibacterials in food constitute a risk to human health. Although epidemiological data on the real magnitude of their adverse effects are very scarce, they indicate that food could be an important avenue for evolution and dissemination of antibiotic-resistant bacteria. Analysis of these residues plays a key role in ensuring food safety, to the point that the European Union has not only established maximum residue limits but also requirements concerning the performance of analytical methods and the interpretation of the results. These specifications have had a great influence on protocols and techniques applied. In this review, we discuss the progress of rapid screening me…

The Complex Process of Haemostasis and Interactions due to Hyperosmotic Fluids

2017

Location and characterization of the stem-calyx area on oranges by computer vision

1996

Three image analysis methods were studied and evaluated to solve the problem of removing long stems attached to mechanically harvested oranges: colour segmentation based on linear discriminant analysis, contour curvature analysis, and a thinning process which involves iterating until the stem becomes a skeleton. These techniques are able to determine the presence or absence of a stem with certainty, to locate the stems from random views with more than 90% accuracy and from profile images with an accuracy ranging from 92.4% to 100% depending on the method used. Finally, determination of the length and cutting point of the stem is achieved with only 3.8% of failures. (C) 1996 Silsoe Research …

Optimization of the straightness measurements on rough surfaces by Monte Carlo simulation

2013

Summary The straightness error of a coordinate measuring machine (CMM) is determined by measuring a rule standard. Thanks to a reversal technique, the straightness uncertainty of the CMM is theoretically dissociated from the straightness uncertainty of the rule. However, stochastic variations of the whole measurement system involve uncertainties of the CMM straightness error. To quantify these uncertainties, different sources of stochastic variations are listed with their associated probability density functions. Then Monte Carlo methods are performed first to quantify error and secondly to optimize measurement protocol. It is shown that a 5-measurement distance from 0.1 mm to each measurem…

Physical Education Pedagogy: an analysis of research published in Spanish journals (2005–2014)

2016

ABSTRACTBackground: The majority of reviews related to Physical Education Pedagogy (PEP) refer to the English-speaking world. Some of these assert the need to obtain more data and provide reviews of what has been investigated in languages other than English to be able to assess the current state of the field internationally.Purpose: The aim of this study was to identify, categorise, and analyse articles on PEP published in Spanish sport science journals during the last decade (2005–2014).Participants and setting: A total of 13 journals were selected: 8 were indexed in the Scopus databases, and 5 were added based on expert judgement due to their importance in the field of Spanish PEP.Researc…

Trust and mistrust when students read multiple information sources about climate change

2011

Abstract The present study investigated how undergraduates judged the trustworthiness of different information sources that they read about climate change. Results showed that participants ( N  = 128) judged information from textbook and official documents to be more trustworthy than information from newspapers and a commercial agent. Moreover, participants put most emphasis on content and least emphasis on date of publication when judging document trustworthiness. When judging the trustworthiness of the textbook, they emphasized criteria differently than when evaluating other types of documents. Results also indicated that readers low in topic knowledge were more likely to trust less trust…

Fear and Body. Art and Media Projects for Teacher Training.

2018

Media and contemporary art is important for teacher training. Art educators could link art experience with their own reality, and media evidences. Creativity deals with social, political and cultural issues. From an innovative perspective, we propose strategies for art educators. We introduce topics in the school setting, linked to the emotions, needs and students' life. Concepts such as 'fear' or 'body' allow us to investigate current problems. We approach the concepts from the work of Spanish artists Carmen Calvo and Anna Ruiz Sospedra. Methodology used mixed, combining Arts-Based Educational Research and Artography. We highlight the great acceptance by students of this process

Sedation in allergic rhinitis is caused by the condition and not by antihistamine treatment

1996

Sedation is regarded as a common side-effect of most H1-antihistamines. This view must be accepted, yet can hardly be assessed under treatment of allergic disorders. Since central sedative potency is hard to evaluate, different methods of measurement have been introduced in the four phases of clinical investigation. While tests of high complexity in early trials can detect true central effects, they seem to have the disadvantage of not taking into consideration the important interactions of drugs with the disorder. Therefore, we used a visual analog scale (VAS) as an instrument to demonstrate sedative effects in five clinical studies carried out between 1989 and 1994 with a total number of …

Monte Carlo dosimetric study of Best Industries and Alpha Omega Ir-192 brachytherapy seeds

2004

Ir-192 seeds are widely used in the USA for low dose rate interstitial brachytherapy. There are two commercially available models: those manufactured by Best Industries filtered with stainless steel, and those manufactured by Alpha-Omega seeds filtered with Pt. Newly developed 3D correction algorithms for brachytherapy are based on dosimetry data obtained on unbounded phantom size, allowing corrections for heterogeneities and actual tissue boundaries. Published dosimetric datasets for both seeds have been obtained under bounded conditions. The aim of the present study is to obtain dosimetric datasets for these seeds under full scatter conditions. The Monte Carlo GEANT4 code has been used to…

A particle based simulation model for glacier dynamics

2013

This publication is contribution number 22 of the Nordic Centre of Excellence SVALI, “Stability and Variations of Arctic Land Ice”, funded by the Nordic Top-level Research Initiative (TRI). The work has been supported by the SVALI project through the University of Lapland, Arctic Centre, and through the University Centre in Svalbard. Funding was also provided by the Conoco-Phillips and Lunding High North Research Program (CRIOS: Calving Rates and Impact on Society). A particle-based computer simulation model was developed for investigating the dynamics of glaciers. In the model, large ice bodies are made of discrete elastic particles which are bound together by massless elastic beams. These…