Results 301 to 310 of about 184,470 (336)

Persistent Organic Pollutants in Biotic and Abiotic Components of Antarctic Pristine Environment

Earth Systems and Environment, 2018
Over the past decades, research in Antarctica has built a new understanding of Antarctica, its past, present and future. Human activities and long-range pollutants are increasing on the Antarctic continent. Research on persistent organic pollutants (POPs) has been carried out internationally by several countries having their permanent research stations
Tanu Jindal, Abhishek Chauhan, Laxmi Kant Bhardwaj, Anuj Ranjan   +3 more
openaire   +2 more sources

MnO₂ and Oxalate: An Abiotic Route for the Oxidation of Aromatic Components in Wheat Straw

Journal of Agricultural and Food Chemistry, 1998
Oxidants formed through the interaction between MnO2 and oxalate accumulated in rotten wood have been evaluated as abiotic agents possibly involved in wheat straw ligninolysis. The hemicellulose and cellulose content of straw remained unchanged, and no release of free soluble materials from lignin or polysaccharides could be evidenced.
Lequart, C., Kurek, Bernard, Debeire, Philippe, Monties, Bernard   +3 more
openaire   +3 more sources

Direct regulation of abiotic responses by the Arabidopsis circadian clock component PRR7

The Plant Journal, 2013
SummaryUp to 30% of the plant transcriptome is circadian clock‐regulated in different species; however, we still lack a good understanding of the mechanisms involved in these genome‐wide oscillations in gene expression. Here, we show that PSEUDO‐RESPONSE REGULATOR 7 (PRR7), a central component of the Arabidopsis clock, is directly involved in the ...
Eva M. Farré, Tomomi Takeuchi, Jenny Carlsson, Tiffany L. Liu, Linsey Newton   +4 more
openaire   +3 more sources

The use of biotic and abiotic components of Red Sea coastal areas as indicators of ecosystem health

Ecotoxicology, 2015
A biomonitoring study was conducted using some biotic (Pomadasys hasta and Lutjanus russellii fish) and abiotic (water and sediment) components of the Red Sea coast of Hodeida, Yemen Republic along two polluted sites (Al-Dawar beach and Urj village) in comparison to a reference site (Al-Nukhailah beach).
Mohamed-Assem S. Marie, Yousef S. Saleh, Wael A. Omar, Wael A. Omar   +3 more
openaire   +2 more sources

Biotic and Abiotic Components of Marine Ecosystem

2023
An aquatic ecosystem is a water-based environment. Aquatic ecosystems include the marine ecosystem and freshwater ecosystems. Two-thirds of the total surface area of the planet is covered by marine water. These ecosystems can be classified into two main categories; i) water/pelagic environment (including; neritic and oceanic zones) and; ii) bottom ...
openaire   +1 more source

The catalytic power of inorganic components in the abiotic synthesis of hydroquinone-derived humic polymers

Applied Clay Science, 1985
Abstract The catalytic power of 14 inorganic materials, namely, 4 synthetic short-range ordered oxides, 4 CBD-treated clay minerals, and 6 primary minerals in the abiotic synthesis of humic acids (HA) through the oxidative polymerization of hydroquinone was investigated. The promoting effect of Mn oxide is much higher than that of short-range ordered
Pan Ming Huang, Pan Ming Huang, H. Shindo, H. Shindo   +3 more
openaire   +2 more sources

Sorption of Trace Elements by Biotic and Abiotic Soil Components and Their Composites

2010
With the increasing discharge by excessive application of fertilizer and the development of various industrial productions, the pollution by trace elements in natural environment has received great attention in recent decades. The sorption of trace elements on soil components is considered to be a vital process in controlling their mobility and ...
openaire   +2 more sources

Radioactive and Stable Isotopes in Abiotic and Biotic Components of Antarctic Ecosystems Surrounding the Italian Base

International Journal of Environmental Analytical Chemistry, 1995
Abstract Results concerning the analysis of natural (K-40, Th-232, U-238) and anthropogenic (Sr-90. Cs-137, Pu-238, Pu-239, 240) radioactivity determined in samples collected during the PNRA (National Program for Antarctic Research) 1990–91 and 1991–92 Scientific Expeditions, are presented.
TRIULZI, Cesare, NONNIS MARZANO, Francesco, CASOLI, Antonella, MORI, Alessandra, VAGHI, Marina   +4 more
openaire   +3 more sources

Abiotic, residual and functional components of landforms related to geomorphic-engineer species

2010
International ...
Corenblit, Dov Jean-François, Steiger, Johannes, Delmotte, Sebastien   +2 more
openaire   +1 more source

Impacts of Forest Fires on Soil: Exploring the Effects on Biotic and Abiotic Components

Sylwan
Forest fires are a widespread occurrence in ecosystems worldwide, impacting both vegetation and soil. The effects of forest fires, as well as prescribed fires, on forest soil are complex, influencing soil organic matter, macro and micro-nutrients, and physical properties such as texture, color, pH, and bulk density, along with soil biota. The magnitude
Al−Khayri, Jameel M., Khan, Tahir
openaire   +1 more source