Search results for "phosphate"
showing 10 items of 1874 documents
CCDC 2044570: Experimental Crystal Structure Determination
2021
Related Article: Md Kamal Hossain, Jörg A. Schachner, Matti Haukka, Michael G. Richmond, Nadia C. Mösch-Zanetti, Ari Lehtonen, Ebbe Nordlander|2021|Polyhedron|205|115234|doi:10.1016/j.poly.2021.115234
Monitoring a Mechanochemical Reaction Reveals the Formation of a New ACC Defect Variant Containing the HCO 3 – Anion Encapsulated by an Amorphous Mat…
2020
Crystal growth & design 20(10), 6831 - 6846 (2020). doi:10.1021/acs.cgd.0c00912
Study of the action of phosphate ions contained in the mixing water of the hydration of a Portland cement.
2005
Cementation is considered as the most attractive solution for the conditioning of low and intermediate radioactive wastes. The species contained in these wastes can strongly influence the reactivity of the cement pastes, it is in particular the case of the ortho-phosphate ions which are found in the evaporation concentrates. The aim of our work was to determine the influence of these ions on the hydration and the rheological properties of the cement pastes at early age as well as the mechanical and physical properties on the hardened material.
Influence of boric acid on the hydration of magnesium phosphate cement at an early age
2015
International audience; Magnesium phosphate cements (MPCs) are receiving increasing attention because of their outstanding properties of fast setting and hardening, good volume stability and excellent bonding to old concrete structures. Their main area of application is thus rapid repair works, but they may also offer prospects for the stabilization / solidification of deleterious waste.The main constituents of MPCs are magnesium oxide (calcined, or hardburnt, magnesia) and a water-soluble acid phosphate, which is most often diammonium hydrogen phosphate (NH$_4$)$_2$HPO$_4$. To avoid the release of noxious gaseous ammonia during the hardening process, potassium dihydrogen phosphate (KH$_2$P…
The Medicago truncatula hypermycorrhizal B9 mutant displays an altered response to phosphate and is more susceptible to Aphanomyces euteiches.
2014
SPE IPM; National audience; Inorganic phosphate (Pi) plays a key role in the development of arbuscular mycorrhizal (AM) symbiosis, which is favoured when Pi is limiting in the environment. We have characterized the Medicago truncatula hypermycorrhizal B9 mutant for its response to limiting (P/10) and replete (P2) Pi. On P2, mycorrhization was significantly higher in B9 plants than in wild-type (WT). The B9 mutant displayed hallmarks of Pi-limited plants, including higher levels of anthocyanins and lower concentrations of Pi in shoots than WT plants. Transcriptome analyses of roots of WT and B9 plants cultivated on P2 or on P/10 confirmed the Pi-limited profile of the mutant on P2 and highli…
GAPDH, ntosak and cdc48, a conserved chaperone-like aaa-atpase, as nitric oxide targets in response to (a)biotic stresses
2013
Services provided by soil microorganisms to improve plant phosphate nutrition
2022
Since the first Green Revolution, agricultural practices have been based on the massive use of synthetic fertilisers and plant protection products. Since then, global consumption of phosphate fertilisers has more than tripled, reaching 47 million tonnes in 2019. Current projections estimate that phosphate rock stocks (natural phosphorus resources for fertiliser production) could be depleted within the next century, leading us to change our agricultural practices. In soils, P is mainly present in complexed forms that are not easily accessible to plants. To reduce the use of phosphate fertilisers, it is necessary to make this complexed phosphate accessible to plants. This can be done by benef…
Un établissement rural mérovingien à Delle "La queue au loup" (territoire de Belfort)
2010
This merovingian establishment discovered during an archaeological evaluation to the west of the town of Delle in the Belfort territory is located on the Batte hillside about 300 m from the large Gallo-roman domain on the opposite slope of the valley. This settlement is characterised by a large edifice built of stone and perishable materials, which replaces a timber framed building. The building covers 230 m2 and vestiges of the floors, partitions and interior fittings are preserved which is rare for the period. The analysis of phosphate levels has given indications as to the function of each room. The finds are modest, but they do date, along with radiocarbon analysis, the settlement from …
Fructose 2,6-bisphosphate as a signal for changing from sugar to lipid oxidation during flight in locusts
1986
AbstractFlight in locusts is initially powered mainly by carbohydrate but if flight is to be sustained, as in migration, the animals have to utilize fat as the predominant fuel. The molecular basis of this metabolic switch has not been identified. Fructose 2,6-bisphosphate is a potent activator of 6-phosphofructokinase (EC 2.7.1.11) purified from locust flight muscle. After the first few minutes of flight in the locust the concentration of fructose 2,6-bisphosphate in the flight muscle falls dramatically, which should lead to a decrease in the activity of 6-phosphofructokinase as part of the mechanism to conserve carbohydrate during prolonged flight.
Effects of a glyphosate-based herbicide on survival and oxidative status of a non-target herbivore, the Colorado potato beetle (Leptinotarsa decemlin…
2019
Glyphosate is the globally most used herbicide against a wide range of weeds. Glyphosate has been considered safe to animals as it mainly targets physiological pathways in plants. However, recent toxicological studies have revealed that glyphosate can cause various toxic effects also on animals. In this study, we investigated the direct toxic effects of a glyphosate-based herbicide (GBH, Roundup® Bio) on 1) survival and 2) oxidative status of a non-target herbivore by using Colorado potato beetles (Leptinotarsa decemlineata), originating from Poland and USA, as model species. Larvae were randomly divided into three groups: 1) high concentration (100% Roundup Bio, 360 g/l), 2) low concentrat…