Results 91 to 100 of about 2,336,597 (324)

Human Health Risk Assessment From Exposure to Toxic Metals in Soils and Leafy Vegetables in Smallholder Farms of Northeastern Brazil

Journal of Applied Toxicology, EarlyView.
ABSTRACT This study assessed human health risks associated with exposure to potentially toxic metals (PTMs) in soils and leafy vegetables cultivated in smallholder agricultural systems in Northeastern Brazil. Soil and vegetable samples were collected from 18 agricultural areas and analyzed for cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), nickel
Fernando Ferreira da Cunha Filho, Alex Souza Moraes, João Paulo Siqueira da Silva, Edvane Borges da Silva, Ademir Amaral, André Maciel Netto   +5 more
wiley   +1 more source

Accounting for sap flow from different parts of the root system improves the prediction of xylem ABA concentration in plants grown with heterogeneous soil moisture. [PDF]

, 2008
When soil moisture is heterogeneous, sap flow from, and ABA status of, different parts of the root system impact on leaf xylem ABA concentration ([X-ABA]leaf). The robustness of a model for predicting [X-ABA]leaf was assessed.
Egea, Gregorio, Davies, William J., Dodd, Ian C.   +2 more
core   +4 more sources

Multi-Temporal Evaluation of Soil Moisture and Land Surface Temperature Dynamics Using in Situ and Satellite Observations

Remote Sensing, 2016
Soil moisture (SM) is an important component of the Earth’s surface water balance and by extension the energy balance, regulating the land surface temperature (LST) and evapotranspiration (ET). Nowadays, there are two missions dedicated to monitoring the
Miriam Pablos, José Martínez-Fernández, María Piles, Nilda Sánchez, Mercè Vall-llossera, Adriano Camps   +5 more
doaj   +1 more source

Assimilation of SMOS brightness temperatures or soil moisture retrievals into a land surface model [PDF]

Hydrology and Earth System Sciences, 2016
Three different data products from the Soil Moisture Ocean Salinity (SMOS) mission are assimilated separately into the Goddard Earth Observing System Model, version 5 (GEOS-5) to improve estimates of surface and root-zone soil moisture. The first product
G. J. M. De Lannoy, R. H. Reichle
doaj   +1 more source

Machine‐learning based spatiotemporal prediction of soil moisture in a grassland hillslope

Vadose Zone Journal
Soil moisture (SM) plays a significant role in the earth's water balance and in optimizing land management practices. However, SM at the field scale is difficult to map from available point measurements due to the inherent heterogeneity of soil and ...
Timo Houben, Pia Ebeling, S. Khurana, J. Schmid, Johannes Boog   +4 more
semanticscholar   +1 more source

A Morphological Study of Restoration of Damaged Hair Fiber With Chemical Treatments Using Microscopy Techniques

Microscopy Research and Technique, EarlyView.
Assessment of Restoring Chemically Damaged Hair Fibers Using Microscopy and Spectroscopy. ABSTRACT This paper analyses hair restoration products currently on the market that treat chemically processed hair. This study measured the restoration of structural integrity in hair samples from both chemically damaged hair (chemically relaxed, bleached, and ...
L. P. A. Mauricio, R. A. D. Cunha, S. M. Alves   +2 more
wiley   +1 more source

Global soil moisture dynamics: attribution of contributions and their association with GPP

Frontiers in Plant Science
Soil moisture (SM) is central to the global land-atmosphere interaction and is of significant research importance. However, the dynamic structural features of SM remain insufficiently explored.
Yang Li, Yang Li, Leer Bao, Panxing He, Chengyun Wang, Songyan Zhu, Jun Ma, Yunjiang Liang, Jianhua Xiao   +8 more
doaj   +1 more source

Low‐Intensity Precipitation Dominates Peninsular Spain (1961–2022)

International Journal of Climatology, EarlyView.
Spatial analysis across Spain shows a shift in precipitation regimes (1961–2022) toward more frequent low‐intensity precipitation and reduced high‐intensity events, with localised increases in heavy precipitation along some coastal areas. This redistribution—captured through changes in precipitation frequency (RF) and volumetric contribution (RC ...
Ahmed M. El Kenawy, Santiago Beguería, Fernando Domínguez‐Castro, Amar Halifa‐Marín, Maria Adell‐Michavila, Borja Latorre, Magí Franquesa, Islam M. Gaber, Islam M. Hamdi, Sergio M. Vicente‐Serrano   +9 more
wiley   +1 more source

A Modified Hierarchical Vision Transformer for Soil Moisture Retrieval From CYGNSS Data

Water Resources Research
This research introduces a new deep learning (DL) framework, multi‐head self‐attention‐aided vision Transformer (MSA‐ViT), for soil moisture (SM) retrieval using Cyclone Global Navigation Satellite System (CYGNSS) data. We first assess the sensitivity of
Qingyun Yan, Yu-Han Chen, Yuanjin Pan, Shuanggen Jin, Wei-Min Huang   +4 more
semanticscholar   +1 more source

Land‐Atmosphere Coupling Is Associated With Severer Vegetation Productivity Losses During Compound Dry‐Hot Events in Drylands

International Journal of Climatology, EarlyView.
Compound dry‐hot events (CDHEs) exerted severer damage on vegetation productivity for temperate shrublands, savannas and grasslands in drylands. Land‐atmosphere coupling was associated with severer negative impacts of CDHEs through soil moisture–temperature feedback, especially for dry‐event‐leading CDHEs.
Xue Xiao, Mengtian Huang, Chunhui Lu, Panmao Zhai   +3 more
wiley   +1 more source