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Uribeetxebarria Asier Martínez-Casasnovas José A. Escolà Alexandre Rosell-Polo Joan R. Arnó Jaume 《Precision Agriculture》2019,20(2):179-192
Precision Agriculture - Estimation of yield or other fruit quality parameter is of great interest to farmers to decide on management actions just before harvesting and, in any case, to anticipate... 相似文献
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Enriching Artemia nauplii with a high DHA‐containing lipid emulsion: search for an optimal protocol 
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下载免费PDF全文 Elena Viciano Óscar Monroig Ana Salvador Jaume Amat Susana Fiszman Juan Carlos Navarro 《Aquaculture Research》2015,46(5):1066-1077
This study aimed to investigate practical strategies to optimize the use of a high‐docosahexaenoic acid (DHA) lipid emulsion (M70), a product with great potential in live prey enrichments for marine larviculture. Considering its particularly high content in DHA (22:6n‐3), the adequate utilization of the emulsion for Artemia enrichments was evaluated in a series of six experiments. More specifically, the bioencapsulation efficiency of M70 into Artemia nauplii was tested under different experimental conditions of oxygen source, aeration flow, incubation temperature, concentration and dosage, as well as nauplial densities. Our results showed that an optimal utilization of M70 is achieved with incubation temperatures of 28°C, moderate aeration flows and nauplial densities of 300 ind per mL. In addition, the emulsion can be dispensed in the enrichment medium in one single dose of 0.8 g L?1, with no apparent detrimental effects on its oxidative stability and Artemia nauplii survival during enrichment. 相似文献
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Antioxidant activity and phenolic composition of wild, edible, and medicinal fennel from different Mediterranean countries 总被引：1，自引：0，他引：1
Faudale M Viladomat F Bastida J Poli F Codina C 《Journal of agricultural and food chemistry》2008,56(6):1912-1920
Fennel (Foeniculum vulgare Mill.) is a typical aromatic plant of the Mediterranean area, long used as a medicinal and spice herb. Fennel is also well-known for its essential oil, which has been extensively studied for many years owing to its commercial importance. In this work, the antioxidant activity and the total phenolic and flavonoid contents, as well as the quantitative determination of individual flavonoids and phenolic acids of wild, edible, and medicinal fennel from different Mediterranean countries, have been determined. The antioxidant activity was measured as the free radical (DPPH), hydroxyl radical, and superoxide anion scavenging activities. Wild fennel was found to exhibit a radical scavenging activity, as well as a total phenolic and total flavonoid content, higher than those of both medicinal and edible fennels. 相似文献
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Sanchez-Cabeza Joan A. Pujol Lluís Merino Joan Bruach Joan M. Molero Jaume 《Water, air, and soil pollution》2000,118(3-4):339-356
The river Ebro, in Northeast Spain,discharges into the Mediterranean Sea after flowingthrough several large cities and agricultural, miningand industrial areas. The Ascó nuclear power plant(NPP) is located in the lower river section andcomprises two pressurised-water reactor (PWR) units,from which low-level liquid radioactive waste isreleased to river waters under authority control.During the period 1989 to 1993, we carried out 29sampling campaigns in order to determine 3H,90Sr, 134Cs, 137Cs, 238Pu and239,240Pu in Ebro river waters at differentlocations, both upstream and downstream from theAscó NPP. 3H, 134Cs and 137Csactivities showed large variability as they rangedfrom <1.4 to 117±3 Bq L-1, <0.27 to22±1 mBq L-1 and <0.36 to 35±1mBq L-1, respectively. This behaviour, especiallyremarkable for tritium, was due to the detection oftank releases travelling downstream. Thecharacteristic NPP 134Cs/137Cs ratio wasfound to be 0.61±0.02 (N = 22). In the estuarinearea, 137Cs traces from Mediterranean waters wereobserved and relatively enhanced tritium activitiesmight possibly be present due to the accumulation ofactivity in the estuary. 90Sr and 239,240Puactivities were homogeneous both in respect to timeand space, showing mean activities 6.9±0.2 mBq L-1 (N = 10) and 1.36±0.10 mBq m-3 (N = 3), respectively. These levels couldonly be attributed to nuclear weapons fallout leachedby continental waters, as the impact from the plantappears to be negligible and no other sources arepresent in the area. 相似文献
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Carmen Pérez-Sirvent Carmen Hernández-Pérez María José Martínez-Sánchez Mari Luz García-Lorenzo Jaume Bech 《Journal of Soils and Sediments》2017,17(5):1384-1393
Purpose
This study was undertaken to determine the feasibility of using three aquatic macrophytes, Phragmites australis, Juncus effusus and Iris pseudacorus, to phytoextract potentially toxic elements (PTEs) from a contaminated area by mining activities.Materials and methods
An artificial pond was constructed with two topsoils (yellow and black samples) collected from Portman Bay. In order to simulate the mixing with carbonate materials, which naturally occurs in this area, a stabilisation approach was applied by mixing with 30 % of limestone filler. Three replicates of each type of soil have been prepared in pots for the selected species. The total PTEs content (arsenic, cadmium, copper, iron, lead and zinc) was determined and the bioconcentration factor (BCF) and transfer factor (TF) calculated.Results and discussion
Soil samples showed high PTEs content as a result of mining activities. As regards the root contents, the PTEs is higher in yellow samples (YS) than in black ones, because in these samples the PTEs content that could be mobilised is higher. The BCF results were higher than unity for arsenic, copper, lead and cadmium for I. pseudacorus and P. australis growing on YS soil. Overall, copper and manganese showed a larger number of plants with BCF higher than unity. The PTEs content in leaves is low, and the TF results are lower than unity in almost all samples.Conclusions
The results indicate that it is possible to use the selected species for phytostabilisation of soils contaminated with PTEs. J. effusus, P. australis and I. pseudacorus could be considered as tolerant, and natural or artificial wetlands containing these species could be used for remediation purposes.39.
Mobile terrestrial laser scanner applications in precision fruticulture/horticulture and tools to extract information from canopy point clouds 总被引：2，自引：0，他引：2
Alexandre Escolà José A. Martínez-Casasnovas Josep Rufat Jaume Arnó Amadeu Arbonés Francesc Sebé Miquel Pascual Eduard Gregorio Joan R. Rosell-Polo 《Precision Agriculture》2017,18(1):111-132
LiDAR sensors are widely used in many areas and, in recent years, that includes agricultural tasks. In this work, a self-developed mobile terrestrial laser scanner based on a 2D light detection and ranging (LiDAR) sensor was used to scan an intensive olive orchard, and different algorithms were developed to estimate canopy volume. Canopy volume estimations derived from LiDAR sensor readings were compared to conventional estimations used in fruticulture/horticulture research and the results prove that they are equivalent with coefficients of correlation ranging from r = 0.56 to r = 0.82 depending on the algorithms used. Additionally, tools related to analysis of point cloud data from the LiDAR-based system are proposed to extract further geometrical and structural information from tree row crop canopies to be offered to farmers and technical advisors as digital raster maps. Having high spatial resolution information on canopy geometry (i.e., height, width and volume) and on canopy structure (i.e., light penetrability, leafiness and porosity) may result in better orchard management decisions. Easily obtainable, reliable information on canopy geometry and structure may favour the development of decision support systems either for irrigation, fertilization or canopy management, as well as for variable rate application of agricultural inputs in the framework of precision fruticulture/horticulture. 相似文献
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Jose Ramón Rico Hernández Ignacio Gómez-Lucas Jose Navarro-Pedreño Manuel M. Jordán Jaume Bech Victor M. Nieto Asencio Noemi Portell Iñiguez 《Journal of Soils and Sediments》2018,18(6):2172-2178