Search results for "value"
showing 10 items of 5321 documents
Determination of edible oil parameters by near infrared spectrometry
2006
Abstract A chemometric method has been developed for the determination of acidity and peroxide index in edible oils of different types and origins by using near infrared spectroscopy (NIR) measurements. Different methods for selecting the calibration set, after an hierarchical cluster analysis, were applied. After discrimination of olive oils from maize, seed and sunflower, the prediction capabilities of partial least squares (PLS) multivariate calibration of NIR data were evaluated. Several preprocessing alternatives (first derivative, multiplicative scatter correction, vector normalization, constant offset elimination, mean centering and standard normal variate) were investigated by using…
Determination of sulphonamides in human urine by azo dye precolumn derivatization and micellar liquid chromatography
1995
Abstract A high-performance liquid chromatographic method for the determination of sulphonamides in urine is reported. The drugs (sulphadiazine, sulphaguanidine, sulphamethizole, sulphamethoxazole, and sulphathiazole) were diazotized with nitrite and coupled with N-(1-naphthyl)ethylenediamine dihydrochloride in a sodium dodecyl sulphate (SDS) micellar medium. Separation of the sulphonamide azo dyes was performed on a C18 column with a 0.05 M SDS-2.4% pentanol mobile phase, which permitted the direct injection of the urine samples. The limits of detection were in the 0.1–0.3 μg/ml range.
A macroeconomic analysis of the farmland value determinants in Italy
2013
The determinants of farmland value and the factors that have caused its changes over time have been discussed extensively in the economic literature. This studies offer different classifications of the determinants of the farmland value. The aim of this paper is to investigate the influence on the farmland value of the some macro-economic variables related to the agricultural sector both directly and indirectly. A multiple regression model is adopted to answer the research questions. The results showed, on the one hand, a strong influence of agricultural productivity, a regional expenditure allocated to the sector and an increasing diffusion in the regions of protected areas on the farmland…
Consumption values and mobile banking services : understanding the urban-rural dichotomy in a developing economy
2021
PurposeThis study develops a theoretical model of consumption values regarding the technology adoption of mobile banking (m-banking) services, with the financial service sector as the empirical context. This study aims to evaluate whether consumption values influence trust and intention. Furthermore, the authors explore how the consumer type (i.e. urban vs rural) differs in consumption values regarding adopting m-banking services.Design/methodology/approachThe data for this study were gathered from 246 responses collected from individuals living in a country with a developing market, using a survey instrument. The six study hypotheses were tested using partial least squares structural equat…
Education for development in the university context. Why and for what?
2021
La educación para el desarrollo se ha venido popularizando progresivamente en las universidades españolas en paralelo con la extensión de la cooperación para el desarrollo entre estas. La educación para el desarrollo se ha visto como una oportunidad para promover el compromiso social de la Universidad y fomentar valores de solidaridad y justicia a través de la formación universitaria. La educación para el desarrollo ha puesto de relieve el componente educativo de la Universidad, a menudo subsumido por el afán formativo. Sin embargo, el alcance de la educación para el desarrollo y, sobre todo, su transversalización en los programas de estudio universitarios siguen siendo muy limitados. El ob…
Oral dysphagia. An unique symptom for a wide spectrum of diseases
2009
Dysphagia, defined as a difficulty in swallowing of fluids and/or solid foods, is one of the most frequent symptoms of esophageal, gastrointestinal, ear, nose and throat diseases. As such, it poses a diagnostic challenge and an interdisciplinary clinical problem. Of particular importance in diagnosis is to distinguish between esophageal and oropharyngeal dysphagia. Oropharyn-geal dysphagia is often associated with neuromuscular disorders and is treated with rehabilitative protocols, while esophageal dysphagia may be due to anatomical alterations and esophageal motility difficulties. While the former can be adequately treated with endoscopic or surgical therapy, the latter are currently trea…
Non invasive tools for the diagnosis of liver cirrhosis
2014
Liver cirrhosis (LC), the end stage of many forms of chronic hepatitis of different etiologies is a diffuse process characterized by fibrosis and the conversion of normal liver architecture into structurally abnormal nodules surrounded by annular fibrosis. This chronic progressive clinical condition, leads to liver cell failure and portal hypertension, which can favour the onset of hepatocellular carcinoma. Defining the phase of the natural history is crucial for therapeutic choice and prognosis. Liver biopsy is currently considered the best available standard of reference but it has some limits, so alternative tools have been developed to substitute liver biopsy when assessing liver fibros…
Novel technologies to detect atelectotrauma in the injured lung
2010
ABSTRACTCyclical recruitment and derecruitment of lung parenchyma (R/D) remains a serious problem in ALI/ARDS patients, defined as atelectotrauma. Detection of cyclical R/D to titrate the optimal respiratory settings is of high clinical importance. Image-based technologies that are capable of detecting changes of lung ventilation within a respiratory cycle include dynamic computed tomography (dCT), synchrotron radiation computed tomography (SRCT), and electrical impedance tomography (EIT). Time-dependent intra-arterial oxygen tension monitoring represents an alternative approach to detect cyclical R/D, as cyclical R/D can result in oscillations of PaO2 within a respiratory cycle. Continuous…
Imaging techniques for the vulnerable coronary plaque
2007
The goal of this article is to illustrate the main invasive and noninvasive diagnostic modalities to image the vulnerable coronary plaque, which is responsible for acute coronary syndrome. The main epidemiologic and histological issues are briefly discussed in order to provide an adequate background. Comprehensive coronary atherosclerosis imaging should involve visualization of the entire coronary artery tree and plaque characterization, including three-dimensional morphology, relationship with the lumen, composition, vascular remodelling and presence of inflammation. No single technique provides such a comprehensive description, and no available modality extensively identifies the vulnerab…
Contemporary practice and technical aspects in coronary intervention with bioresorbable scaffolds : a European perspective
2015
Aims Next to patient characteristics, the lack of a standardised approach for bioresorbable vascular scaffold (BVS) implantation is perceived as a potential explanation for the heterogeneous results reported so far. To provide some guidance, we sought to find a consensus on the best practices for BVS implantation and management across a broad array of patient and lesion scenarios. Methods and results Fourteen European centres with a high volume of BVS procedures combined their efforts in an informal collaboration. To get the most objective snapshot of different practices among the participating centres, a survey with 45 multiple choice questions was prepared and conducted. The results of th…