David C. Weindorf
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View article: Combining proximal and remote sensors for regional soil characterization in rural Haiti
Combining proximal and remote sensors for regional soil characterization in rural Haiti Open
View article: Enhancing soil organic carbon estimation with generative AI and Nix color sensor
Enhancing soil organic carbon estimation with generative AI and Nix color sensor Open
View article: Soil Geochemistry Toward Lithium Pegmatite Exploration: Building a Machine-Learning Predictive Algorithm via Portable X-Ray Fluorescence
Soil Geochemistry Toward Lithium Pegmatite Exploration: Building a Machine-Learning Predictive Algorithm via Portable X-Ray Fluorescence Open
As demand for lithium (Li) increases, cheaper, more sustainable, and faster methods are needed for the identification and characterization of new Li deposits. Lithium-rich pegmatites are major sources of Li, but their exploration is often …
View article: Toward sustainable compost use: Prediction of organic matter via smartphone image analysis
Toward sustainable compost use: Prediction of organic matter via smartphone image analysis Open
Increased global emphasis on environmental sustainability and soil health requires efficient, accessible tools to evaluate compost organic matter (OM), a key contributor to soil quality and carbon/nutrient cycling. This study used smartpho…
View article: Geochemical Halos in Wall Rocks and Overlying Soils as Indicators of Concealed Lithium Pegmatites
Geochemical Halos in Wall Rocks and Overlying Soils as Indicators of Concealed Lithium Pegmatites Open
Spodumene-bearing pegmatites are geochemically anomalous among crystalline rocks and important critical mineral resources in the green energy transition. However, prospecting is challenging due to their small size and the fact that they ar…
View article: Can Generative Ai and Nix Color Sensor Improve Soil Organic Carbon Estimation?
Can Generative Ai and Nix Color Sensor Improve Soil Organic Carbon Estimation? Open
View article: Can Generative Ai and Nix Color Sensor Improve Soil Organic Carbon Estimation?
Can Generative Ai and Nix Color Sensor Improve Soil Organic Carbon Estimation? Open
View article: Proximal sensor integration for land use classification and soil analysis in a coastal environment
Proximal sensor integration for land use classification and soil analysis in a coastal environment Open
Portable X-ray fluorescence (PXRF) and Nix Pro sensors are efficient tools for rapid in-situ soil analysis. This study combined PXRF and Nix Pro to classify land use and characterize soils from Sandwip Island, Bangladesh. Soil samples from…
View article: Proximal sensing characterization of polygenetic soils variability in Brazil
Proximal sensing characterization of polygenetic soils variability in Brazil Open
In tropical regions, pedogenesis studies are challenging since most soils are polygenetic and studies on this approach are still lacking. Thus, complementary data is needed to understand their formation, which has been possible through pro…
View article: Digital soil mapping of available phosphorus using a smartphone-integrated RGB imaging device and ascorbic acid extraction method
Digital soil mapping of available phosphorus using a smartphone-integrated RGB imaging device and ascorbic acid extraction method Open
Soil fertility, specifically phosphorus (P) availability, is critical for agricultural productivity and environmental health. Traditional methods for measuring soil available P are typically lab-based and expensive. This study explored the…
View article: Soil fertility prediction using combined USB-microscope based soil image, auxiliary variables, and portable X-ray fluorescence spectrometry
Soil fertility prediction using combined USB-microscope based soil image, auxiliary variables, and portable X-ray fluorescence spectrometry Open
View article: Proximal sensor characterization of Haitian agricultural soils: A case study in the Central Plateau
Proximal sensor characterization of Haitian agricultural soils: A case study in the Central Plateau Open
Optimized agronomic production is vital to life and livelihood in Haiti. As such, rapid, low-cost soil characterization may inform specific decision making for improved crop production. Ahead of a larger soil characterization campaign (120…
View article: Prediction of compost organic matter via color sensor
Prediction of compost organic matter via color sensor Open
Composted materials serve as an effective soil nutrient amendment. Organic matter in compost plays an important role in quantifying composted materials overall quality and nutrient content. Measuring organic matter content traditionally ta…
View article: Plant colonizers of a mercury contaminated site: trace metals and associated rhizosphere bacteria
Plant colonizers of a mercury contaminated site: trace metals and associated rhizosphere bacteria Open
Background and aims Mercury (Hg) contamination poses severe human and environmental health risks. We aimed to evaluate the colonization of Hg-contaminated sites by native plants and the prokaryotic composition of rhizosphere soil communiti…
View article: Assessment of Coffee Leaves Nutritive Value Via Portable X-Ray Fluorescence Spectrometry and Machine Learning Algorithms
Assessment of Coffee Leaves Nutritive Value Via Portable X-Ray Fluorescence Spectrometry and Machine Learning Algorithms Open
View article: Comparative analysis and visualization of soil profiles at the meter spatial scale utilizing novel matrix and volume rendering techniques
Comparative analysis and visualization of soil profiles at the meter spatial scale utilizing novel matrix and volume rendering techniques Open
View article: A Smartphone-Enabled Imaging Device for Chromotropic Acid-Based Measurement of Nitrate in Soil Samples
A Smartphone-Enabled Imaging Device for Chromotropic Acid-Based Measurement of Nitrate in Soil Samples Open
In this study, a novel chromotropic acid-based color development method was proposed for quick estimation of soil nitrate (NO3−). The method utilized a 3D printed device integrated with the rear-end camera of a smartphone and a stand-alone…
View article: Developing regional soil micronutrient management strategies through ensemble learning based digital soil mapping
Developing regional soil micronutrient management strategies through ensemble learning based digital soil mapping Open
Mapping of soil micronutrient variability is critical for improving agronomic biofortification. This study used 1778 surface soil samples collected from four agro-climatic regions of the Indo-Gangetic Plain of India to produce digital soil…
View article: Mobility and bioaccessibility of arsenic (As) bound to titanium dioxide (TiO2) water treatment residuals (WTRs)
Mobility and bioaccessibility of arsenic (As) bound to titanium dioxide (TiO2) water treatment residuals (WTRs) Open
View article: Zoogenic soil horizons – termite ecosystem engineers in different agro-ecological regions of Mozambique
Zoogenic soil horizons – termite ecosystem engineers in different agro-ecological regions of Mozambique Open
Termite nests represent a typical ecosystem engineered to produce a solid and long-lasting home where in-dividuals are protected from predators, rainfall, and sunlight, while maintaining requisite temperatures and humidity. To achieve this…
View article: Portable X-Ray Fluorescence Spectroscopy Characterization of Metallic Pollution and Migration in the Bailing Cu-Zn Deposit Area, China
Portable X-Ray Fluorescence Spectroscopy Characterization of Metallic Pollution and Migration in the Bailing Cu-Zn Deposit Area, China Open
View article: Combining Proximal and Remote Sensors in Spatial Prediction of Five Micronutrients and Soil Texture in a Case Study at Farmland Scale in Southeastern Brazil
Combining Proximal and Remote Sensors in Spatial Prediction of Five Micronutrients and Soil Texture in a Case Study at Farmland Scale in Southeastern Brazil Open
Despite the increasing adoption of proximal sensors worldwide, rare works have coupled proximal with remotely sensed data to spatially predict soil properties. This study evaluated the contribution of proximal and remotely sensed data to p…
View article: Establishing a scenario of exposure to environmental toxins associated with nephropathies in agricultural areas of Costa Rica based on Geological Medicine
Establishing a scenario of exposure to environmental toxins associated with nephropathies in agricultural areas of Costa Rica based on Geological Medicine Open
Chronic Kidney Disease (CKD) of unknown origin has caused serious public health problems in specific countries in the word, such as, Sri Lanka, India and Mesoamerica. Particularly in Costa Rica the pathology and linked mortality are concen…
View article: iDVS: interactive 2D and 3D visualizations of proximal sensor data for rapid characterization of soil profiles
iDVS: interactive 2D and 3D visualizations of proximal sensor data for rapid characterization of soil profiles Open
Knowledge of the soil’s physical and chemical properties in field-scale geographical areas is crucial for farmers and policymakers for agronomic productivity and environmental quality assessment. Proximal sensors can successfully model soi…
View article: Recovery of soil microbial diversity and functions along a tropical montane forest disturbance gradient
Recovery of soil microbial diversity and functions along a tropical montane forest disturbance gradient Open
Logging and forest conversion are occurring at alarming rates in tropical forests. These disturbances alter soil microbial community structure and functions. While direct links between changes in soil properties, such as pH and microbial c…
View article: Using Nix Color Sensor and Munsell Soil Color Variables to Classify Contrasting Soil Types and Predict Soil Organic Carbon in Eastern India
Using Nix Color Sensor and Munsell Soil Color Variables to Classify Contrasting Soil Types and Predict Soil Organic Carbon in Eastern India Open
View article: Determination of trace element concentrations in organic materials of “intermediate-thickness” <i>via</i> portable X-ray fluorescence spectrometry
Determination of trace element concentrations in organic materials of “intermediate-thickness” <i>via</i> portable X-ray fluorescence spectrometry Open
This research explored the feasibility of using portable X-ray fluorescence (pXRF) spectrometry to quantify Fe, Cu, Zn, and As concentrations in dried and ground organic materials (fungi, vegetation, and animal tissues) with intermediate t…
View article: On-farm evaluation of regenerative land-use practices in a semi-arid pasture agroecosystem in West Texas, USA
On-farm evaluation of regenerative land-use practices in a semi-arid pasture agroecosystem in West Texas, USA Open
Continually rising scarcity in water and nutrient resources, especially in semi-arid agricultural systems, combined with increased frequency of extreme weather events such as drought, contribute to a growing need for resilient and regenera…
View article: Soil profile analysis using interactive visualizations, machine learning, and deep learning
Soil profile analysis using interactive visualizations, machine learning, and deep learning Open
© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
View article: Portable X-ray Fluorescence Analysis of Water: Thin Film and Water Thickness Considerations
Portable X-ray Fluorescence Analysis of Water: Thin Film and Water Thickness Considerations Open
Water is requisite for life and essential for many industries. Increasingly, global water supplies include inorganic contaminants leading to millions of deaths annually. High analytical cost and a lack of field portable methods have stymie…