Search results for "olive"
showing 10 items of 464 documents
Phenolic and Antioxidant Analysis of Olive Leaves Extracts (Olea europaea L.) Obtained by High Voltage Electrical Discharges (HVED)
2019
Background: The aim of this study was to evaluate high voltage electrical discharges (HVED) as a green technology, in order to establish the effectiveness of phenolic extraction from olive leaves against conventional extraction (CE). HVED parameters included different green solvents (water, ethanol), treatment times (3 and 9 min), gases (nitrogen, argon), and voltages (15, 20, 25 kV). Methods: Phenolic compounds were characterized by ultra-performance liquid chromatography-tandem mass spectrometer (UPLC-MS/MS), while antioxidant potency (total phenolic content and antioxidant capacity) were monitored spectrophotometrically. Data for Near infrared spectroscopy (NIR) spectroscopy, colorimetry…
A comparative analysis of genetic variation in rootstocks and scions of old olive trees – a window into the history of olive cultivation practices an…
2014
Background Past clonal propagation of olive trees is intimately linked to grafting. However, evidence on grafting in ancient trees is scarce, and not much is known about the source of plant material used for rootstocks. Here, the Simple Sequence Repeat (SSR) marker technique was used to study genetic diversity of rootstocks and scions in ancient olive trees from the Levant and its implications for past cultivation of olives. Leaf samples were collected from tree canopies (scions) and shoots growing from the trunk base (suckers). A total of 310 trees were sampled in 32 groves and analyzed with 14 SSR markers. Results In 82.7% of the trees in which both scion and suckers could be genotyped, t…
Llengua i identitat en l’obra de Benvingut Oliver i Joan Baptista Perales
2015
Resum: Aquest treball es proposa analitzar la reacció dels erudits valencians Benvingut Oliver i Joan Baptista Perales davant els postulats de la filologia romànica sobre el català en la segona meitat del segle XIX. A més, tractem de relacionar la posició d’Oliver i Perales amb altres erudits i escriptors del moviment reinaixencista i amb la consciència de comunitat lingüística compartida amb catalans, balears i nord-catalans. A partir de la meitat del Vuitcents els romanistes germànics funden la filologia romànica i constaten que el català és el nom de la llengua pròpia dels territoris de llengua catalana, diferent de l’occità i sense res a veure amb el llemosí amb què era conegut des de p…
La traducció catalana de Siwan de Saunders Lewis als "Quaderns de Teatre" de l'Agrupació Dramàtica de Barcelona i Joan Oliver
2009
L'obra teatral Siwan, de l'escriptor, activista i polític nacionalista gal· les Saunders Lewis (1893-1985), fou traduida al catala per Ferran de Poi i Esyllt T. Lawrence. La va editar Joan Olivera la col·lecció 'Quadems de Teatre' de l'Agrupació Dramatica de Barcelona el 1962. Siwan (tradu'ida amb el títol catala de La corda del penjat) és un drama historie, tot i que !'autor sempre el qualificava com a poema, basat en fets de la historia medieval gal·lesa. La traducció catalana fou un primer intent de normalitzar les relacions literaries catalanogaHeses,en les quals fou pont imprescindible Esyllt T. Lawrence.
Solemne acte d'investidura com a doctor 'Honoris Causa' del Sr.Oliver Williamson i investidura dels nous doctors 2003/2004
2004
Acte protocol·lari d'investidura com a doctor Honoris Causa de l'excmo. Sr. Oliver Williamson i investidura dels nous doctors 2003-2004.
Dynamics of dry matter partitioning in young ‘Nocellara del Belice’ olive trees
2008
Dry matter partitioning of ‘Nocellara del Belice’ olive (Olea europaea L.) trees was assessed during one growing season. Four three-year-old potted trees from rooted cuttings trained to single-trunk free-canopy were destructively harvested at 30-day intervals during the growing season. The average dry matter increase was about 2 kg · year-1 per tree. Total plant dry weight increased linearly over the year, whereas root to shoot ratio followed a quadratic trend with its peak during winter. Dry matter of all canopy parts (trunk, branches, 1-year-old shoots, and leaves) increased linearly and leaves exhibited the fastest growth. Also fine roots accumulated dry matter over the year in a linear …
Improvement of FAO-56 Model to Estimate Transpiration Fluxes of Drought Tolerant Crops under Soil Water Deficit: Application for Olive Groves
2014
[EN] Agro-hydrological models are considered an economic and simple tool for quantifying crop water requirements. In the last two decades, agro-hydrological physically based models have been developed to simulate mass and energy exchange processes in the soil-plant-atmosphere system. Although very reliable, because of the high number of required variables, simplified models have been proposed to quantify crop water consumes. The main aim of this paper is to propose an amendment of the Food and Agricultural Organization (FAO) of the United Nations FAO-56 spreadsheet program to introduce a more realistic shape of the stress function, valid for mature olive orchards (Olea europaea L.). The mod…
Detecting crop water status in mature olive orchards using vegetation spectral measurements.
2014
Full spectral measurements (350–2500 nm) at tree canopy and leaf levels and the corresponding leaf water potentials (LWP) were acquired in an olive grove of Sicily, at different hours of the day, during summer season 2011. The main objective of the work was to assess, on the basis of the experimental data-set, two different approaches to detect crop water status in terms of LWP. Specifically, using existing families of Vegetation Indices (VIs) and applying Partial Least Squares Regression (PLSR) were optimised and tested. The results indicated that a satisfactory estimation of LWP at tree canopy and leaf levels can be obtained using vegetation indices based on the near infrared–shortwave in…
Combined use of eddy covariance and sap flow techniques for partition of ET fluxes and water stress assessment in an irrigated olive orchard
2013
Correct estimation of crop actual transpiration plays a key-role in precision irrigation scheduling, since crop growth and yield are associated to the water passing through the crop. Objective of the work was to assess how the combined use of micro-meteorological techniques (eddy covariance, EC) and physiological measurements (sap flow, SF) allows a better comprehension of the processes involving in the Soil–Plant–Atmosphere continuum. To this aim, an experimental dataset of actual evapotranspiration, plant transpiration, and soil water content measurements was collected in an olive orchard during the midseason phenological period of 2009 and 2010. It was demonstrated that the joint use of …
Testing the long term applicability of USLE-M equation at a olive orchard microcatchment in Spain
2016
Abstract Universal Soil Loss Equation USLE-based erosion models have been used extensively to complement erosion measurements, to understand the interactions of the different geophysical features into erosion processes and to assess adequate alternative management practices and scenarios analyses. Despite its proved usefulness on different land-uses around the world, there is an urgent need to set up simple tools which do not require an advanced management expertise in terms of both choose of model parameters and calculation ability and which are accurate particularly at the event scale. In this paper the suitability of the Modified USLE (USLE-M) model at the event and the annual scale were…