A5076579701- Soil Geostatistics and Mapping
- Soil Management and Crop Yield
- Soil Carbon and Nitrogen Dynamics
- Geology and Paleoclimatology Research
- Heavy metals in environment
- Coastal wetland ecosystem dynamics
- Growth and nutrition in plants
- Coastal and Marine Dynamics
- Laser-induced spectroscopy and plasma
- Karst Systems and Hydrogeology
- Geography and Environmental Studies
- Crop Yield and Soil Fertility
- Aquatic Ecosystems and Phytoplankton Dynamics
- Geological formations and processes
- Banana Cultivation and Research
- Mineral Processing and Grinding
- Plant responses to elevated CO2
- Geochemistry and Geologic Mapping
- Tree-ring climate responses
- Agriculture, Soil, Plant Science
- Plant Water Relations and Carbon Dynamics
- Plant nutrient uptake and metabolism
- Cassava research and cyanide
- Arsenic contamination and mitigation
- Forest ecology and management
Université Mohammed VI Polytechnique
2022-2023
Universidade Federal de Viçosa
2015-2021
Hospital Universitário da Universidade de São Paulo
2021
Universidade de São Paulo
2019-2020
National Council for Scientific and Technological Development
2012
The successful use of energy-dispersive X-ray fluorescence (ED-XRF) sensors for soil analysis requires the selection an optimal procedure data acquisition and a simple modelling approach. This work aimed at assessing performance portable XRF (XRF) sensor set up with two different tube configurations (combinations voltage current) to predict nine key fertility attributes: (clay, organic matter (OM), cation exchange capacity (CEC), pH, base saturation (V), extractable nutrients (P, K, Ca, Mg)....
The timely diagnosis of plant-available soil nutrient contents is crucial in enhancing agricultural intensification and bridging yield gaps. There a global demand for practical easy-to-use analytical tool capable predicting the status soils to make chemical faster, cheaper, environmentally friendly. A growing body research has highlighted potential energy dispersive X-ray fluorescence (XRF) sensors monitoring condition soils. This study critically reviews current knowledge on feasibility...
The matrix effect is one of the challenges to be overcome for a successful analysis soil samples using X-ray fluorescence (XRF) sensors. This work aimed at evaluation simple modeling approach consisted Compton normalization (CN) and multivariate regressions (e.g., multiple linear (MLR) partial least squares regression (PLSR)) effect, subsequently improve prediction accuracy key fertility attributes. A portable XRF was used analyzing 102 collected from two agricultural fields with contrasting...
Portable X-ray fluorescence (pXRF) sensors allow one to collect digital data in a practical and environmentally friendly way, as complementary method traditional laboratory analyses. This work aimed assess the performance of pXRF sensor predict exchangeable nutrients soil samples by using two contrasting strategies sample preparation: pressed pellets loose powder (<2 mm). Pellets were prepared cellulose binder at 10% w w−1 followed grinding for 20 min. Sample homogeneity was probed...
Micro-X-ray fluorescence (μ-XRF) spectroscopy has been used for dendrochemistry as a high spatial resolution, multi-elemental and non-destructive technique. Furthermore, micro-X-ray absorption near edge structure (μ-XANES) potential application in environmental studies by adding speciation information under in-situ conditions. Both, μ-XRF μ-XANES, techniques were to assess the inter-ring intra-ring chemical content variations of Avicennia schaueria mangrove tree from Southeastern Brazil. Ca,...
μ-EDXRF is a strong analytical tool enabling the simultaneous mapping of As and P in As-hyperaccumulator fern <italic>Pityrogramma calomelanos</italic>.
Proximal soil sensing technologies, such as visible and near infrared diffuse reflectance spectroscopy (VNIR), X-ray fluorescence (XRF), laser-induced breakdown (LIBS), are dry-chemistry techniques that enable rapid environmentally friendly fertility analyses. The application of XRF LIBS sensors in an individual or combined manner for prediction is quite recent, especially tropical soils. shared dataset presents spectral data VNIR, XRF, sensors, even the characterization key attributes...
The study of the potential for biogas production, a particular residue, is very important, especially design digesters and it has been doing long time. However, there are few studies related to anaerobic digestion castor bean cake (CBC). Then, aim this was determine production from CBC, with without addition animal wastes. experiment carried out at Department Agricultural Engineering, Federal University Viosa. There were used nine bench operating in batch way, containing 2 L substrate. three...
The objective of this work was to demonstrate the viability making recommendation fertilizers for corn and bean cultures based on models saturation kinetics, following Law diminishing return, aiming improve efficiency nutrient use, reducing costs production avoiding excessive use non renewable natural resources. In culture (grain hybrid) they were utilized levels 0.0, 0.25, 0.5, 1, 2, 4, 8, 16 32 g/hole fertilizer NPK 4-14-8 in seeding same amounts ammonium sulfate 34 days later. space...
Resumo. The cassava processing industries generate different types of waste, among which stands out the wastewater, an effluent pressing to produce flour or starch, named manipueira. It is considered pollutant due its high organic load and toxic, presence highly toxic cyanide compound. This waste can be treated by anaerobic digestion, with generation by-products as biogas biofertilizer. objective this work was evaluate effect combination biofertilizers produced from digestion manipueira, in...
Objetivou-se, com essa pesquisa, quantificar a produção de biogás e caracterizar os biofertilizantes oriundos da digestão anaeróbia torta mamona adição dejetos animais. Os biodigestores foram do tipo bancada, operando em batelada, contendo 2 L substrato. três tratamentos foram: água (T1); dejeto bovino (T2); suíno (T3), 9 dag kg-1 ST repetições cada. A quantidade utilizada correspondeu 15% massa maior foi observada no T2 (2,03 L), sendo semelhante T1 T3 (P>0,05). O biofertilizante...
As ações antrópicas têm modificado as superfícies naturais, acarretando alterações na pedosfera. Em função dessas alterações, um novo tipo de material surge pela ação direta do agente antrópico, sendo denominados solos antrópicos ou antropossolos. Neste solo o homem é considerado principal fator formação, diferenciando-se dos formação natural. A presente pesquisa avaliou características químicas quatro antropossolos da área costeira e periurbana município Guarapari-ES utilizando a avaliação...
O município de Viçosa, como grande parte dos municípios brasileiros, apresenta problemas abastecimento água. De modo a avaliar espessura da camada deposição uma das barragens do município, foi utilizado radar penetração solo (ground penetrating - GPR). Amostras sedimentos foram analisadas por espectrometria fluorescência raios X (XRF), visando determinar composição química sedimentos. Os dados GPR indicaram presença três metros na represa, o que corresponde diminuição substancial volume...