Search Results - Fourier analysis.

Fourier analysis of historical NOAA time series data to estimate bimodal agriculture by Canisius, F., Turral, Hugh, David, S.

“…In the present study, NDVI time-series 10-day composites derived from NOAA AVHRR data were used to estimate bimodal agriculture areas (where there are two seasons of cultivation per annum) using Fourier approach. The NDVI sequence was transformed into harmonic signals and the amplitude and phase of first and second harmonics were used for the analysis. …”
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Rapid metabolic discrimination and prediction of dioscin content from African yam tubers using Fourier transforminfrared spectroscopy combined with multivariate analysis by Kwon, Y.K., Jie, E.Y., Sartie, A.M., Kim, D.J., Liu, J.R., Min, B.W., Kim, S.W.

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Characterization of Fusarium graminearum isolates recovered from wheat samples from Argentina by Fourier transform infrared spectroscopy : phenotypic diversity and detection of spe... by Fígoli, Cecilia Beatriz, Rojo, Rodrigo, Gasoni, Amelia Laura, Kikot, Gisele Eleonora, Leguizamón, Mariana, Gamba, Raúl Ricardo, Bosch, Alejandra, Alconada Magliano, Teresa Maria

“…The aim of this work was to analyze the phenotypic characteristics associated with phenotypic diversity and aggressiveness of 34 F. graminearum sensu stricto isolates recovered from Argentinean fields in the 2008 growing season using the Fourier Transform Infrared (FTIR) dried film technology. …”
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Crop recognition at orchard level in Mediterranean conditions using time series of Sentinel-2 spectral indices by Moltó, Enrique, Izquierdo-Sanz, Héctor

“…The model is based on the analysis of time series of two spectral indices obtained from Sentinel-2 images and using a Fourier decomposition approach. …”
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FT-IR and untargeted chemometric analysis for adulterant detection in chia and sesame oils by Rodríguez, Silvio David, Gagneten, Maite, Farroni, Abel Eduardo, Percibaldi, Nora Mabel, Buera, María del Pilar

“…Spectroscopic methods associated to untargeted analysis are appropriate and faster than traditional techniques, requiring less time to prepare and run the samples. …”
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Near infrared techniques applied to analysis of wheat-based products: Recent advances and future trends by Badaró, Amanda Teixeira, Hebling e Tavares, João Pedro, Blasco, José, Aleixos, Nuria, Barbin, Douglas Fernandes

“…Traditional techniques used for quality parameters determinations are laborious, destructive, and demand chemical analysis. Hence, it is necessary the development of techniques capable to overcome these disadvantages. …”
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Comprehensive nutrient analysis in agricultural organic amendments through non-destructive assays using machine learning by Towett, Erick K., Drake, L. B., Acquah, G. E., Haefele, S. M., McGrath, S. P., Shepherd, Keith D.

“…Portable X-ray fluorescence (pXRF) and Diffuse Reflectance Fourier Transformed Mid-Infrared (DRIFT-MIR) spectroscopy are rapid and cost-effective analytical tools for material characterization. …”
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Characterization and functional analysis of clpB gene from Acidovorax avenae subsp. avenae RS-1 by Zhang, Y., Zhang, F., Li, B., Yang, Y.Z., Ibrahim, M., Fang, Y.S., Qiu, W., Masum, M. M. I., Oliva, R.

“…The reduction of virulence may be also partially due to the change in EPS composition, which was characterized by the Fourier transform infrared (FTIR) spectra. Furthermore, analysis of protein homology modelling showed that the structure of ClpB is different from those of the other T6SS components. …”
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Estimación genética de 2060 variables espectrales mediante análisis multivariados de datos crudos by Miranda-Alejo, J. C., Peris, C., Gómez, Ernesto A.

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Machine learning approach for high-throughput phenolic antioxidant screening in black Rice germplasm collection based on surface FTIR by Herath, Achini, Tiozon, Rhowell Jr., Kretzschmar, Tobias, Sreenivasulu, Nese, Mahon, Peter, Butardo, Vito

“…Here we utilised rapid surface Fourier transform infrared (FTIR) spectroscopy and machine learning algorithms (ML) to predict and classify polyphenolic antioxidants. …”
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In-line sorting of irregular potatoes by using automated computer-based machine vision system by ElMasry, Gamal, Cubero, Sergio, Moltó, Enrique, Blasco, José

“…Based on stepwise linear discriminant analysis, two shape features (roundness and extent) and four Fourier-shape descriptors were found to be effective in sorting regular and irregular potatoes. …”
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A comparison between NIR and ATR-FTIR spectroscopy for varietal differentiation of Spanish intact almonds by Cortés, Victoria, Barat, Jose Manuel, Talens, Pau, Blasco, José, Lerma-García, María J.

“…After spectra measurement, NIR and ATR-FTIR spectral data were pre-treated and employed to construct two classification methods (partial least square-discriminant analysis (PLS-DA) and quadratic discriminant analysis (QDA)) in order to check their ability to classify almonds according to their variety. …”
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Using GIS techniques to aid in predicting a plant virus in beans by Klass, J, Leclerc, Gregoire, Morales, Francisco José, Wellens, J

“…For the purpose of this analysis three techniques were selected (multivariate logistic regression, Fourier transform with principle components analysis and a multi-process boolean analysis) to predict the spatial occurrence of BGMV in beans. …”
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Metoder för reduktion av halten lättlösliga kolhydrater i vallfoder och jämförelse av analysmetoder by Pettersson, Emma

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Dinámica de factores asociados al uso de la tierra e implicaciones sobre el colapso ambiental de 1999 en la costa norte de Venezuela by Baritto Lozano, F.S.

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Archetypal temporal dynamics of arid and semi-arid rangelands by Bruzzone, Octavio Augusto, Easdale, Marcos Horacio

“…In particular, we applied archetype analysis to fast Fourier transform coefficients, using pixels as analytical units and frequencies as variables, of a large study area from North Patagonia, Argentina. …”
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FTIR-DRIFTS-based prediction of β-carotene, α-tocopherol and L-ascorbic acid in mango (Mangifera indica L.) fruit pulp by Olale, Kennedy O., Walyambillah, Waudo, Mohammed, Salim Ali, Sila, Andrew M., Shepherd, Keith D.

“…Conventional techniques of vitamins analysis are based on High Pressure Liquid Chromatography, which are costly and laborious. …”
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Exploring the biochemical, technical and applicative characteristics of pullulan produced by different strains of Aureobasidium pullulans by Cignola, Rudy, Palou, Lluís, Pérez-Gago, María B., Lovison, D., Di Foggia, M., Basso, F., Daniso, E., Garagozzo, L., De Marco, R., Colautti, A., Firrao, G., Di Francesco, Alessandra

“…Pullulan produced by the strains was biochemically characterized by FT-IR (Fourier Transform Infrared Spectroscopy), DSC (Differential Scanning Calorimetry) and NMR (Nuclear Magnetic Resonance) analyses. …”
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Composition of water buffalo milk during the first period of lactation - relation to mozzarella cheese properties by Kashwa, Mokhtar

“…Milk protein analysis was done by capillary electrophoresis. Ionic calcium was determined using calcium ion-selective electrode. …”

Hipercetonemia y la evaluación de los niveles de Beta-hidroxibutirato (ΒHB) y Acetona (Ac) en leche by Huertas Molina, Oscar Felipe, Olivera Angel, Martha, Zambrano Varón, Jorge Luis

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