Search results for "COV"
showing 10 items of 9749 documents
Phenolic Profiles, Antioxidant and Anti-Inflammatory Activities of Hydrodistillation Wastewaters from Five Lamiaceae Species
2022
Distillation is the most widely used method to obtain an essential oil from plant material. The biomass used in the process is returned as a solid residue together with variable amounts of water rich in water-soluble compounds, which currently are not addressed to any further application. The scope of this work was to evaluate the phytochemical composition of wastewaters coming from hydrodistillation (DWWs) of five aromatic plants belonging to the Lamiaceae family, and to assess their in vitro antioxidant and anti-inflammatory activities. The phenolic profiles of the DWWs were determined by HPLC-DAD and HPLC-ESI/MS. Free radical scavenging ability, oxygen radical antioxidant capacity and su…
Radiolabeling of Nanoparticles and Polymers for PET Imaging
2014
Nanomedicine has become an emerging field in imaging and therapy of malignancies. Nanodimensional drug delivery systems have already been used in the clinic, as carriers for sensitive chemotherapeutics or highly toxic substances. In addition, those nanodimensional structures are further able to carry and deliver radionuclides. In the development process, non-invasive imaging by means of positron emission tomography (PET) represents an ideal tool for investigations of pharmacological profiles and to find the optimal nanodimensional architecture of the aimed-at drug delivery system. Furthermore, in a personalized therapy approach, molecular imaging modalities are essential for patient screeni…
Prevalencia y factores de desgaste profesional en radiólogos durante la pandemia COVID-19
2022
Antecedentes: La epidemia por coronavirus 2019 (COVID-19) se ha extendido por todo el mundo desde principios de 2020, sometiendo a los profesionales sanitarios a una sobrecarga laboral ya un mayor nivel de estrés físico y emocional. Objetivos: El objetivo de este estudio es determinar la prevalencia de desgaste profesional y sus posibles factores asociados en los radiólogos españoles durante la COVID-19, y su comparación con la situación previa a la pandemia. Métodos: Estudio observacional realizado entre los meses de abril y agosto de 2020 (durante la pandemia) mediante una encuesta en línea. Se obtuvieron un total de 150 respuestas. Se recopiló y comparó la información demográfica y labor…
Determinants of the interannual relationships between remote sensed photosynthetic activity and rainfall in tropical Africa
2007
International audience; The response of photosynthetic activity to interannual rainfall variations in Africa South of the Sahara is examined using 20 years (1981-2000) of Normalised Difference Vegetation Index (NDVI) AVHRR data. Linear correlations and regressions were computed between annual NDVI and annual rainfall at a 0.5° latitude/longitude resolution, based on two gridded precipitation datasets (Climate Prediction Center Merged Analysis of Precipitation [CMAP] and Climatic Research Unit [CRU]). The spatial patterns were then examined to detect how they relate to the mean annual rainfall amounts, land-cover types as from the Global Land Cover 2000 data set, soil properties and soil typ…
Global Estimation of Biophysical Variables from Google Earth Engine Platform
2018
This paper proposes a processing chain for the derivation of global Leaf Area Index (LAI), Fraction of Absorbed Photosynthetically Active Radiation (FAPAR), Fraction Vegetation Cover (FVC), and Canopy water content (CWC) maps from 15-years of MODIS data exploiting the capabilities of the Google Earth Engine (GEE) cloud platform. The retrieval chain is based on a hybrid method inverting the PROSAIL radiative transfer model (RTM) with Random forests (RF) regression. A major feature of this work is the implementation of a retrieval chain exploiting the GEE capabilities using global and climate data records (CDR) of both MODIS surface reflectance and LAI/FAPAR datasets allowing the global estim…
Improvements and applications of the elements of prototype-based clustering
2018
Clustering or cluster analysis is an essential part of data mining, machine learning, and pattern recognition. The most popularly applied clustering methods are partitioning-based or prototype-based methods. Prototype-based clustering methods usually have easy implementability and good scalability. These methods, such as K-means clustering, have been used for different applications in various fields. On the other hand, prototype-based clustering methods are typically sensitive to initialization, and the selection of the number of clusters for knowledge discovery purposes is not straightforward. In the era of big data, in high-velocity, ever-growing datasets, which can also be erroneous, outl…
Kansainvälinen tilannekatsaus COVID-19 pandemian vaikutuksista ohjaukseen
2021
Psychosocial factors affecting employees of clean room work environments during Covid-19 infection
2021
Psihosociālie faktori tīro telpu darba vidē strādājošajiem Covid-19 infekcijas laikā. Darba autore: Ilze Kaugija. Darba zinātniskais vadītājs: Dr.ķīm. Ingars Reinholds. Darbs uzrakstīts uz 75 lpp., 23 ietver attēlus, 12 tabulas, 75 informatīvos avotus. Pētījuma tēzes sastāv no 4 daļām. Pirmā daļa ietver literatūras analīzi par tīrajām telpām, psihosociālajiem riska faktoriem, saslimšanām un attiecīgajiem normatīvajiem aktiem un Covid-19 pandēmijas ietekmi uz darba vidi. Otrajā daļā aprakstītas pētījumā izmantotās metodes: psiholoģiskā klimata darba vidē novērtēšanas metode, Cox un A. Griffith tests, K. Maslačas emocionālās izdegšanas aptauja, depresijas tests un Č.D. Spīlbergera trauksmes a…
Describing a network using the ‘Resource-Competences, Organizations, Value’ Business Model
2021
International audience; The network literature reveals some trouble to reconciliate the ambivalence between individual and collective goals inside a network. The purpose of this research is to develop a tool to identify key insights of a network and associated organizations. In particular, following the Resource-Competencies Organization Value (RCOV) framework, this study identifies the contributions of each organization inside a network. Knowing the responsibility of each organization in their network’s strength and tensions could help to solve those ambivalences. Applied to a network, the Demil and Lecocq‘s (2010) RCOV Business Model, could reveal key inputs of a network that each organiz…
Società in house e crisi d’impresa alla luce dell’art. 14 TUSP
2021
The article analyzes the content of Article 14 TUSP (i.e. the Italian Law on Publicly Owned Companies), affirming its applicability also to in-house companies. Particular attention is paid to the regulation of the recovery / restructuring plans mentioned therein and to the interrelationships existing between the latter and the similar (but different) institution of the “certified recovery plans” mentioned by the current Article 67, paragraph 3, lett. d), Bankruptcy Law. Further considerations are addressed to the possibility that theabovementioned recovery plan contemplates the sale of the public shareholdings held by the parent company in the in-house company. Finally, a concise concluding…