Search results for "yield [meson]"

showing 10 items of 34 documents

Early assessment of crop yield from remotely sensed water stress and solar radiation data

2018

Soil moisture (SM) available for evapotranspiration is crucial for food security, given the significant interannual yield variability of rainfed crops in large agricultural regions. Also, incoming solar radiation (Rs) influences the photosynthetic rate of vegetated surfaces and can affect productivity. The aim of this work is to evaluate the ability of crop water stress and Rs remotely sensed data to forecast yield at regional scale. Temperature Vegetation Dryness Index (TVDI) was computed as an indicator of crop water stress and soil moisture availability. TVDI during critical growth stage of crops was calculated from MODIS products: MODIS/AQUA 8-day composite LST at 1 km and 16-day compos…

Limiting factor010504 meteorology & atmospheric sciences0211 other engineering and technologies02 engineering and technologyGeociencias multidisciplinariaAtmospheric sciences01 natural sciencesCiencias de la Tierra y relacionadas con el Medio AmbienteCropYIELD ESTIMATIONYield (wine)EvapotranspirationComputers in Earth SciencesEngineering (miscellaneous)Water content021101 geological & geomatics engineering0105 earth and related environmental sciencesEVAPOTRANSPIRATIONCrop yieldFOOD SECURITYCROP WATER STRESSVegetationAtomic and Molecular Physics and OpticsComputer Science ApplicationsSoil waterEnvironmental scienceCIENCIAS NATURALES Y EXACTASISPRS Journal of Photogrammetry and Remote Sensing
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Energy level determination in bulk heterojunction systems using photoemission yield spectroscopy: case of P3HT:PCBM

2018

Financial support provided by Scientific Research Project for Students and Young Researchers Nr. SJZ2015/20 realized at the Institute of Solid State Physics, University of Latvia, is greatly acknowledged. This work has been supported by the Latvian State Research Program on Multifunctional Materials IMIS2. Jennifer Mann from Physical Electronics is greatly acknowledged for providing UPS data.

Materials scienceionization energyultraviolet photoelectron spectroscopyAnalytical chemistry02 engineering and technology010402 general chemistry01 natural sciencesPolymer solar cell:NATURAL SCIENCES:Physics [Research Subject Categories]General Materials ScienceSurface layerThin filmSpectroscopyphotoemission yield spectroscopyMechanical EngineeringHeterojunction021001 nanoscience & nanotechnology0104 chemical sciencesorganic materialsthin filmsMechanics of MaterialsYield (chemistry)interfaceIonization energy0210 nano-technologyUltraviolet photoelectron spectroscopyJournal of Materials Science
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A New Numerical Method for Axisymmetrical Forming Processes

1987

Summary In this paper a numerical method for the analysis of axisymmetrical forming processes is proposed. This method represents the last development of a previous one which allows to solve forming problems in plane strain condition. The proposed model is baaed on the finite element discretization and on the linearization of the yield surface which leads to solve a LP problem. Two different examples of application, concerning the upsetting of a cylinder and of a hollow disk are reported.

Mathematical optimizationDiscretizationLinearizationYield surfaceMechanical EngineeringNumerical analysisForming processesApplied mathematicsCylinderDevelopment (differential geometry)Industrial and Manufacturing EngineeringFinite element methodMathematicsCIRP Annals
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Growth, yield and fruit quality of 'Tropic Snow' peach on size-controlling rootstocks under dry Mediterranean climates

2013

Abstract A six-year trial was carried out to evaluate the vegetative and productive performance of low-chill, early-ripening ‘Tropic Snow’ peach grown on five peach × almond rootstocks, different for their vigor. The study was conducted in south-western Sicily using 45 V-trained peach trees planted in 2005 and grafted on GF677, the most common rootstock in Sicily, and four low-vigor rootstocks selected at the Department of Agricultural, Food and Environmental Sciences, University of Pisa, namely IS5/8 (Polluce), IS5/19 (Castore), IS5/23, and IS5/29. Trunk circumference, winter and summer pruning weight, total number and weight of fruits per tree, and major fruit quality traits were recorded…

Mediterranean climateIrrigationStomatal conductanceassimilation rate crop load fruit weight trunk growth yield efficiency water deficitbusiness.industryYield efficiencyHorticultureSnowSettore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreeHorticultureAgriculturePostharvestRootstockbusiness
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Macroalgal responses to ocean acidification depend on nutrient and light levels

2015

Ocean acidification may benefit algae that are able to capitalize on increased carbon availability for photosynthesis, but it is expected to have adverse effects on calcified algae through dissolution. Shifts in dominance between primary producers will have knock-on effects on marine ecosystems and will likely vary regionally, depending on factors such as irradiance (light vs. shade) and nutrient levels (oligotrophic vs. eutrophic). Thus experiments are needed to evaluate interactive effects of combined stressors in the field. In this study, we investigated the physiological responses of macroalgae near a CO2 seep in oligotrophic waters off Vulcano (Italy). The algae were incubated in situ …

Ocean Acidification International Coordination Centre (OA-ICC)TemperateSalinityChlorophyll aFucoxanthininorganicAlkalinityPhotosynthetic efficiency standard errorChlorophyll cNitrogen content per dry mass standard errorLight saturation point standard errorPhenolics allTemperature waterCarbon inorganic dissolvedMacroalgaeCalculated using seacarb after Nisumaa et al 2010Carbon Nitrogen ratioAragonite saturation stateAlkalinity totalallCarbon per dry massSalinity standard errortotalCarbon content per dry mass standard errorPhenolics all standard errorCO2 ventChromistapHMaximum photochemical quantum yield of photosystem II standard errorTemperaturePartial pressure of carbon dioxide (water) at sea surface temperature (wet air) standard errordissolvedAntioxidant activity standard errorCarbonate ionMaximum photochemical quantum yield of photosystem IIPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Field experimentstandard errorNitrogen content per dry massElectron transport rate standard errorFucoxanthin standard errorEarth System ResearchViolaxanthinPhenolicsChlorophyll a standard errorCarbon dioxide standard errorPotentiometric titrationCalcite saturation stateCarbon/Nitrogen ratio standard errorNitrogenOchrophytaPotentiometricper dry masswaterChlorophyll c standard errorBenthosAlkalinity total standard errorAntioxidant activityElectron transport rateLight saturation pointOcean Acidification International Coordination Centre OA ICCMacro-nutrientsMediterranean SeaNitrogen per dry massBicarbonate ionTemperature water standard errorCalculated using seacarb after Nisumaa et al. (2010)Primary production PhotosynthesisSpeciespH standard errorCalcite saturation state standard errorCystoseira compressaCalculated using CO2SYSNon photochemical quenchingCarbon content per dry massCarbonate system computation flagViolaxanthin standard errorPrimary production/PhotosynthesisFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonCarbon/Nitrogen ratioBiomass/Abundance/Elemental compositionTreatmentPartial pressure of carbon dioxide water at sea surface temperature wet airAragonite saturation state standard errorCarbon dioxideMacro nutrientsCarbonate ion standard errorSingle speciesFugacity of carbon dioxide water at sea surface temperature wet airPadina pavonicaBiomass Abundance Elemental compositionCoast and continental shelfPhotosynthetic efficiencyBicarbonate ion standard errorNon photochemical quenching standard error
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Seagrass ecosystem response to long-term high CO2 in a Mediterranean volcanic vent

2014

We examined the long-term effect of naturally acidified water on a Cymodocea nodosa meadow growing at a shallow volcanic CO2 vent in Vulcano Island (Italy). Seagrass and adjacent unvegetated habitats growing at a low pH station (pH = 7.65 ± 0.02) were compared with corresponding habitats at a control station (pH = 8.01 ± 0.01). Density and biomass showed a clear decreasing trend at the low pH station and the below- to above-ground biomass ratio was more than 10 times lower compared to the control. C content and delta 13C of leaves and epiphytes were significantly lower at the low pH station. Photosynthetic activity of C. nodosa was stimulated by low pH as seen by the significant increase in…

Ocean Acidification International Coordination Centre (OA-ICC)TemperateSalinityChlorophyll ainorganicAlkalinityLight saturation point standard errorPhotosynthetic quantum efficiencyMediterranean Sea Acidification in a Changing Climate MedSeATemperature waterCarbon inorganic dissolvedCalculated using seacarb after Nisumaa et al 2010IrradianceRespiration rate carbonAragonite saturation stateBiomassAlkalinity totalIrradiance standard errortotalCO2 ventCymodocea nodosapHRespirationEpiphytes loadMaximum photochemical quantum yield of photosystem II standard errorNet community production of carbonTemperaturePartial pressure of carbon dioxide (water) at sea surface temperature (wet air) standard errordissolvedRespiration rate carbon standard errorCarbonate ionMaximum photochemical quantum yield of photosystem IIPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Net community production of carbon standard errorIlluminance standard errorSoft bottom communitystandard errorCarbon inorganic dissolved standard errorRespiration rateElectron transport rate standard errorEarth System Researchδ13CPhotosynthetic quantum efficiency standard errorField observationChlorophyll a standard errorGross primary production of carbonBiomass standard errorCalcium carbonatePotentiometric titrationCalcite saturation stateShoot densityPotentiometricwaterIlluminanceOxygen standard errorBenthosAlkalinity total standard errorMediterranean Sea Acidification in a Changing Climate (MedSeA)Electron transport rateLight saturation pointOcean Acidification International Coordination Centre OA ICCMediterranean SeaGross primary production of carbon standard errorBicarbonate ionSoft-bottom communityδ13C standard errorTemperature water standard errorCalculated using seacarb after Nisumaa et al. (2010)Primary production PhotosynthesisSpeciespH standard errorCarbonate system computation flagloadPrimary production/PhotosynthesisFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonBiomass/Abundance/Elemental compositionTreatmentEpiphytes load standard errorOxygenPartial pressure of carbon dioxide water at sea surface temperature wet airEpiphytes loadCarbon dioxideCarbon standard errorEntire communityFugacity of carbon dioxide water at sea surface temperature wet airGroupBiomass Abundance Elemental compositionCoast and continental shelfEpiphytesShoot density standard errorCalcium carbonate standard error
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Comportamento agronomico di quattro nuovi portinnesti ibridi pesco x mandorlo in un impianto ad alta densità in Sicilia

2009

The present study was aimed to evaluate the agronomic behavior of different rootstocks, recently licensed by the Dipartimento di Coltura e Difesa delle Specie Legnose of the University of Pisa, and tested in a high density planting system (2220 trees/ha). Trials were carried out in an experimental orchard established by the Dipartimento di Colture Arboree of the University of Palermo and located in Sicily (Sciacca – Agrigento – 150 m a.s.l.). The observations were carried out on clonal rootstocks: I.S. 5/8 (Polluce); I.S. 5/19 (Castore); I.S. 5/23; I.S. 5/29 and GF 677 grafted at dormant bud with the low chill requirement cultivar “Tropic Snow”. The orchard was established in 2004, trees we…

Peach x almond hybridPrunus persicaSettore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreeFruit qualitypeach rootstock Prunus dulcis x P. persica hybrids production efficiency high density planting system quality fruitRootstock breedingHigh density plantingsYield efficiencyRootstock breeding; High density plantings; Peach x almond hybrid; Yield efficiency; Fruit quality; Prunus persica
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A unified approach to quasi-static shakedown problems for elastic-plastic solids with piecewise linear yield surface

1978

The paper concerns shakedown analysis of elastic-plastic bodies subjected to quasi-statically varying loads within a given domain. Using a perturbation method, a general inequality is given, from which, by simply specializing the perturbing terms, the generalized Melan theorem as well as bounds on various deformation parameters (such as displacements or plastic strain intensities) are derived. The solution of the «perturbed» shakedown problem in finite or holonimic terms permits the bound to be the most stringent and expressible in «local» terms instead of integral terms. A simple application concludes the paper.

Piecewise linear functionDeformation (mechanics)Mechanics of MaterialsSimple (abstract algebra)Yield surfaceMechanical EngineeringMathematical analysisPlasticityCondensed Matter PhysicsQuasistatic processDomain (mathematical analysis)MathematicsShakedownMeccanica
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Rheological and Flocculation Analysis of Microfibrillated Cellulose Suspension Using Optical Coherence Tomography

2018

A sub-micron resolution optical coherence tomography device was used together with a pipe rheometer to analyze the rheology and flocculation dynamics of a 0.5% microfibrillated cellulose (MFC) suspension. The bulk behavior of the MFC suspension showed typical shear thinning (power-law) behavior. This was reflected in a monotonously decreasing floc size when the shear stress exceeded the yield stress of the suspension. The quantitative viscous behavior of the MFC suspension changed abruptly at the wall shear stress of 10 Pa, which was reflected in a simultaneous abrupt drop of the floc size. The flocs were strongly elongated with low shear stresses. With the highest shear stresses, the flocs…

Rheometershear viscosity; yield stress; flocculation; velocity profile; microfibrillated cellulose; cellulose microfibrils; optical coherence tomographyCellulose microfibrils02 engineering and technologylcsh:Technology01 natural scienceslcsh:Chemistrychemistry.chemical_compoundVelocity profileShear viscosityGeneral Materials ScienceComposite materiallcsh:QH301-705.5InstrumentationFluid Flow and Transfer ProcessesShear thinningta213Drop (liquid)General Engineering021001 nanoscience & nanotechnologylcsh:QC1-999Computer Science ApplicationsMicrofibrillated cellulose0210 nano-technologyFlocculationMaterials scienceselluloosa010402 general chemistrysuspensiotRheologyShear stressFluidizationCelluloseta216Yield stressta114Optical coherence tomographylcsh:TProcess Chemistry and TechnologyviskositeettiFlocculationoptinen koherenssitomografia0104 chemical scienceslcsh:Biology (General)lcsh:QD1-999chemistrylcsh:TA1-2040lcsh:Engineering (General). Civil engineering (General)lcsh:PhysicsApplied Sciences
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La segmentazione della domanda e dell’offerta nell’industria dell’ospitalità

2010

No two customers are identical, even whereas they belong to the same marketing program or they choose the same product or service (Withiam G., 2000). Revenues, costs and therefore profitability differ because of the different effort required to meet the specific need of the specific consumer or group of customers. When competing, firms target information towards specific segments through direct marketing initiatives and actions (Cross R.G., 1997). This finding underlines the importance of knowing in advance customer’s characteristics, even before thinking at the service to provide, and aims to illustrate how the lodging industry normally segments its customers, and which group of customers …

Room Segmentation Market Segments Revenue Management Yield Management Room Revenue Management Hotel Revenue Management.Settore SECS-P/07 - Economia Aziendale
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