Resultados de búsqueda - Spectroscope.

Estimating chlorophyll and nitrogen contents in maize (Zea mays L.) leaves with spectroscopic analysis por Ramos García, Carlos Arturo, Martínez Martínez, Luis Joel, Bernal Riobo, Jaime Humberto

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Quantifying soil carbon stocks and humification through spectroscopic methods: a scoping assessment in EMBU-Kenya por Segnini, A., Posadas, A., Silva, W.T.L. da, Milori, D.M., Gavilan, C., Claessens, Lieven, Quiróz, R.

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Quantifying soil carbon stocks and humification through spectroscopic methods: A scoping assessment in EMBU-Kenya por Segnini, Aline, Posadas, Adolfo, Lopes Silva, Wilson T. da, Milori, Débora M.B.P., Gavilan, Carla, Claessens, Lieven, Quiroz, Roberto

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A global spectral library to characterize the world’s soil por Viscarra Rossel, Raphael A., Behrens, T, Ben-Dor, E., Brown, D.J., Demattê, JAM, Shepherd, Keith D., Shi, Z, Stenberg, B, Stevens, A, Adamchuk, V, Aïchik, H, Barthèsl, BG, Bartholomeus, H.M., Bayer, AD, Bernoux, Martial, Böttchero, K, Brodský, L, Du, CW, Chappell, A, Fouad, Y, Genot, V, Gómez, C., Grunwald, S., Gubler, A, Hedley, CB, Knadel, M, Morrás, HJM, Nocita, M, Ramírez Lopez, L., Roudier, P., Rufasto Campos, EM, Sanborn, P, Sellitto, VM, Sudduth, KA, Rawlins, BG, Walter, C, Winowiecki, Leigh Ann, Hong, SY, Ji, W

“…The spectroscopic models that we derived are parsimonious and robust, and using them we derived a harmonized global soil attribute dataset, which might serve to facilitate research on soil at the global scale. …”
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Laser-induced graphene electrochemical sensor for quantitative detection of phytotoxic aluminum ions (Al3+) in soils extracts por Reyes-Loaiza, Vanessa, De La Roche, Jhonattan, Hernandez-Renjifo, Erick, Idárraga, Orlando, Silva, Mayesse Aparecida da, Valencia, Drochss P., Ghneim-Herrera, Thaura, Jaramillo-Botero, Andres

“…We compared its accuracy for soil samples with pH < 4.8 to within 89–98% of spectroscopic methods (ICP-OES) and potentiometric titration. …”
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Lasting influence of biochemically contrasting organic inputs on abundance and community structure of total and proteolytic bacteria in tropical soils por Rasche, F., Musyoki, M.K., Röhl, C., Muema, E.K., Vanlauwe, Bernard, Cadisch, Georg

“…Alterations of the soil microbial decomposer community were related to differences of quantity (i.e., soil carbon (TC)) and particularly composition of SOC, where mid-infrared spectroscopic (DRIFTS) information, and contents of extractable soil polyphenol (PP) and the newly introduced PP-to-TC ratio served as SOC quality indicators. …”
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Mineralogical characterization of fossil woods from the Las Cañas Formation (early Pliocene), Santiago del Estero, Argentina, mainly using SEM and EDX, XRD, FTIR and Confocal Raman... por Baez, Enrique Alberto, Crisafulli, Alexandra, Kanbour, Agustín, Figueredo, Elsa Iris

“…In this work, X-ray diffraction (XRD) techniques combined with scanning electron microscopy (SEM) with backscattered electron detector (BSE) and spectroscopic techniques such as energy dispersive X-ray (EDX), confocal Raman (CRS) and Fourier transform infrared (FTIR) were applied. …”
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FT-IR and untargeted chemometric analysis for adulterant detection in chia and sesame oils por Rodríguez, Silvio David, Gagneten, Maite, Farroni, Abel Eduardo, Percibaldi, Nora Mabel, Buera, María del Pilar

“…Their retail prices are higher than those of other edible oils and might promote fraudulent adulterations. 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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Emerging techniques for soil carbon measurements por Milori, D.M.P.B., Segnini, A., Silva, W.T.L. da, Posadas, A., Mares, V., Quiróz, R., Martin Neto, L.

“…New opportunities arise with the development and application of portable equipment, based on spectroscopic methods, as laser-induced fluorescence, laser-induced breakdown spectroscopy and near infrared, for in situ carbon measurements in different ecosystems. …”
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A comparison between NIR and ATR-FTIR spectroscopy for varietal differentiation of Spanish intact almonds por Cortés, Victoria, Barat, Jose Manuel, Talens, Pau, Blasco, José, Lerma-García, María J.

“…These results confirm that both spectroscopic techniques, if the optimal statistical model is selected, are powerful tools to reliably discriminate almonds according to their varieties.…”
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Changes in scopoletin concentration in cassava chips from four varieties during storage por Gnonlonfin, G.J.B., Gbenou, J.D., Sanni, A., Brimer, L.

“…BACKGROUND: The use of the root crop cassava (Manihot esculenta Crantz) is constrained by its rapid deterioration after harvesting. Chemical and spectroscopic examination earlier revealed the accumulation of the four hydroxycoumarins esculetin, esculin, scopolin and scopoletin derived from the phenylpropanoid pathway, during the time course of postharvest deterioration. …”
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Components interactions and changes at molecular level in maize flour-based blends as affected by the extrusion process. A multi-analytical approach por Rolandelli, Guido, Gallardo-Navarro, Yoja Teresa, García Pinilla, Santiago, Farroni, Abel Eduardo, Gutierrez-Lopez, Gustavo Fidel, Buera, María del Pilar

“…Non-destructive, fast spectroscopic and microscopic complementary tools were employed. …”
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Quantitative assessment of trace and macro element compositions of cassava (Manihot esculenta) storage roots enriched with B-Carotene as influenced by genotypes and growing locatio... por Alamu, Emmanuel Oladeji, Maziya-Dixon, Busie, Dixon, A.G.

“…Standard laboratory protocols were employed in the sampling to ensure zero contamination, and the trace and macro elements were determined using the inductively coupled plasma optical emission spectroscopic method (ICPOES). The trace and macro elements identified in all the genotypes and varieties investigated were Fe, Mn, B, Cu, Mo, Co, Ni, Zn, and Al; Ca, Mg, Na, K. …”
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Towards Sustainable Dairy Production in Argentina: Evaluating Nutrient and CO2 Release from Raw and Processed Farm Waste por Iocoli, Gastón Alejandro, Orden, Luciano, López, Fernando M., Gómez, Marisa A., Villamil, María B., Zabaloy, María C.

“…The liquid and solid fractions of dairy effluent (LDE, SDE), dairy effluent digestate (DED), onion–cattle manure digestate and compost (OCMD, OCMC) were characterized by chemical and spectroscopic methods. Soil microcosms with LDE, SDE, DED, OCMD and OCMC and the C, N and P mineralization were determined periodically. …”
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Genotypic variation for carotenoids content and chemometric model development for seed quality parameters in wheat por García Oliveira, A.L., Machado, N., Barros, A., Carnide, V., Lima-Brito, J.

“…Thus, in order to find spectroscopical patterns related to carotenoids accumulation and antioxidant activity, efforts are being made to develop a model that will allow the assessment of these parameters through FTIR, in the near-future.…”
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Development of calibration model to predict nitrogen content in single seeds of cowpea (Vigna unguiculata) using near infrared spectroscopy por Ishikawa, H., Boukar, O., Fatokun, C.A., Shono, M., Muranaka, S.

“…In this study, a procedure for estimating the grain nitrogen (protein) content in single seeds using near infrared spectroscopy was developed. Near infrared spectroscopic analysis of single seeds is a useful tool for breeders and food companies. …”
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Soil quality effects on Chenopodium album flavonoid content and antioxidant potential por Chludil, Hugo Daniel, Corbino, Graciela Beatriz, Leicach, Silvia R.

“…Chemical structures were elucidated by chemical and spectroscopic methods. Six known flavonoid glycosides were isolated, and their antioxidant activity was determined by DPPH assay. 1, quercetin-3-O-(2′′,6′′-di-O-α-l-rhamnopyranosyl)-β-d-glucopyranoside; 2, kaempferol-3-O-(2′′,6′′-di-O-α-l-rhamnopyranosyl)-β-d-glucopyranoside; 3, quercetin-3-O-β-d-glucopyranosyl-(1′′′→6′′)-β-d-glucopyranoside; 4, rutin; 5, quercetin-3-O-β-d-glucopyranoside; and 6, kaempferol-3-O-β-d-glucopyranoside. …”
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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... por Fígoli, Cecilia Beatriz, Rojo, Rodrigo, Gasoni, Amelia Laura, Kikot, Gisele Eleonora, Leguizamón, Mariana, Gamba, Raúl Ricardo, Bosch, Alejandra, Alconada Magliano, Teresa Maria

“…Therefore, we could define several spectroscopic markers (NC\\H stretching modes in the 3000–2800 window, NC_O and\\C\\O vibrational modes of esters at 1765–1707 cm−1 and 1474–900 cm−1, respectively), mostly assigned to lipid content that could be associated with F. graminearum aggressiveness. …”
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Study of light penetration depth of a Vis-NIR hyperspectral imaging system for the assessment of fruit quality. A case study in persimmon fruit por García-García, José, Rodríguez-Ortega, Alejandro, Aleixos, Nuria, Blasco, José, Albert, Francisco, Munera, Sandra

“…A non-destructive approach, based on the spatially resolved spectroscopic principle, was proposed to estimate the light penetration depth of a HSI system in a Vis-NIR configuration (in the range 450–1050 nm). …”
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Near-Infrared Reflectance Spectrophotometry (NIRS) application in the amino acid profiling of Quality Protein Maize (QPM) por Alamu, Emmanuel Oladeji, Menkir, A., Adesokan, Michael, Fawole, S., Maziya-Dixon, Busie

“…Using the Near-Infrared Spectroscopic (NIRS) method in breeding to screen many genotypes has proven to be a fast, cost-effective, and non-destructive method. …”
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