Results 251 to 260 of about 58,425 (309)

Health Biomarkers of Pesticide Exposure in Rural Populations of Santa Fe, Argentina: Oxidative Stress and Genotoxicity

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT The present study aimed to quantify pesticide residues in environmental matrices and plasma and to evaluate their potential effects on oxidative stress and DNA damage in rural populations of Santa Fe province. Soil and rainwater samples were collected, and biological samples and semistructured surveys were obtained from volunteers in three ...
María Priscila Dechiara   +4 more
wiley   +1 more source

Pollen Morphology of Crucianella L. (Rubiaceae) Based on Light and Scanning Electron Microscope Data and Implications for Taxonomy

open access: yesMicroscopy Research and Technique, EarlyView.
This study provides the palynological analysis of 12 Crucianella L. taxa using LM and SEM. Variations in pollen size, aperture number, and exine ornamentation were identified as key traits, demonstrating their taxonomic value for distinguishing closely related species and subspecies within the genus. ABSTRACT Crucianella L.
Sevcan Celenk   +3 more
wiley   +1 more source

Interpreting vegetation indices

open access: yesPreventive Veterinary Medicine, 1991
Remotely sensed spectral vegetation indices are widely used and have benefited numerous disciplines interested in the assessment of biomass, water use, plant stress, plant health and crop production. The successful use of these indices requires knowledge of the units of the input variables used to form the indices, and an understanding of the manner in
Ray D. Jackson, Alfredo R. Huete
openaire   +2 more sources

A review of vegetation indices

open access: yesRemote Sensing Reviews, 1995
Abstract In the field of remote sensing applications, scientists have developed vegetation indices (VI) for qualitatively and quantitatively evaluating vegetative covers using spectral measurements. The spectral response of vegetated areas presents a complex mixture of vegetation, soil brightness, environmental effects, shadow, soil color and moisture.
A. Bannari   +3 more
openaire   +2 more sources

Vegetation condition indices for crop vegetation condition monitoring

2011 IEEE International Geoscience and Remote Sensing Symposium, 2011
NDVI maps have been proven valuable in providing a spatially complete view of crop's vegetation condition, which manifests disastrous events such as massive flood and drought. It is virtually impossible to obtain from ground survey data. This paper uses NASA MODIS 250m resolution, daily surface reflectance data for crop condition monitoring.
Zhengwei Yang 0002   +3 more
openaire   +1 more source

ANALYSIS OF VEGETATION INDICES OF URBAN VEGETATION IN ZAGREB (CROATIA)

SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings, 2018
Copernicus is a European Union programme designed to provide a service in delivering free, openly accessible data about the Earth’s surface through satellite and in-situ observations. On the other hand, Landsat represents the world's longest standing continuously acquired collection of space-based, moderate-resolution, land remote sensing data for ...
Krtalić, Andrija   +2 more
openaire   +2 more sources

Fruit and Vegetable Pigments as Indicators

Science, 1930
(1) Solutions of many fruit pigments act as indicators. (2) These solutions are easily prepared and stable, and the pH range of their color changes is in most cases conveniently near the neutral point. (3) As liquid indicators they can be used in titrating acids, but not bases.
O B, Pratt, H O, Swartout
openaire   +2 more sources

Vegetation as an indicator of environmental changes

Environmental Monitoring and Assessment, 1983
Composition of the vegetation and the properties of its environment are related, as was shown by research. In these, mostly statistical-correlative studies, both the vegetation and some growth factors, such as plant nutrients and moisture supply were analyzed and studied on interdependence.At present the environmental conditions can be estimated in the
openaire   +2 more sources

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