Results 11 to 20 of about 138,912 (309)

Establishing phosphorus critical values for tomato (Solanum lycopersicum) fertilization with phosphate fertilizers on the Sudan savanna soils using three soil phosphorus extraction methods and field experimentation in Kano State, Nigeria

open access: yesFrontiers in Agronomy, 2023
Phosphorus (P) is an essential nutrient for tomato (Solanum lycopersicum L.) production, as it stimulates root growth by improving water use efficiency and nutrient uptake.
Yahaya Mohammad Yusuf   +3 more
doaj   +1 more source

High-resolution solid state NMR experiments for the characterization of calcium phosphate biomaterials and biominerals [PDF]

open access: yes, 2011
Calcium phosphates form a vast family of biominerals, which have attracted much attention in fields like biology, medicine, and materials science, to name a few.
Coelho Diogo, Cristina   +15 more
core   +5 more sources

Ion-Substituted Calcium Phosphates Coatings [PDF]

open access: yes, 2021
Coatings based on hydroxyapatite and calcium phosphates have a significant relevance in several research fields, such as biomaterials, cultural heritage, and water treatment, due to their characteristic properties.

core   +1 more source

Buffering Capacity and Effects of Sodium Hexametaphosphate Nanoparticles and Fluoride on the Inorganic Components of Cariogenic-Related Biofilms In Vitro

open access: yesAntibiotics, 2022
Despite the remarkable effects of sodium hexametaphosphate nanoparticles (HMPnano) on dental enamel de-/re-mineralization processes, information on the effects of these nanoparticles on biofilms is scarce. This study assessed the effects of HMPnano, with
Caio Sampaio   +7 more
doaj   +1 more source

The role of phosphates in agriculture and highlighting key issues in agriculture from a climate change perspective [PDF]

open access: yesEkonomika Poljoprivrede (1979), 2021
This paper investigates in the foreground the state of agricultural systems in interdependence with climate change, a condition synec vanon of decarbonization of agriculture.
Popescu Lavinia, Sorinela Safta Adela
doaj   +1 more source

Phosphates Induced H-Type or J-Type Aggregation of Cationic Porphyrins with Varied Side Chains

open access: yesMolecules, 2023
Non-covalent interactions have been extensively used to fabricate nanoscale architectures in supramolecular chemistry. However, the biomimetic self-assembly of diverse nanostructures in aqueous solution with reversibility induced by different important ...
Zhiliang Li   +4 more
doaj   +1 more source

Metal-Salen-based Probes for the Selective Detection of Phosphates via a Disassembly Approach

open access: yesCHIMIA, 2020
Polyoxophosphates are ubiquitous in nature and play important roles in biological systems and in the environment. Pyrophosphate (PPi), an important member of this family, is produced in over 200 biochemical reactions and is a marker in clinical diagnosis.
Prerna Yadav, Felix Zelder
doaj   +1 more source

Amorphous calcium phosphates: synthesis, properties and uses in biomaterials [PDF]

open access: yes, 2010
This review paper on amorphous calcium phosphates (ACPs) provides an update on several aspects of these compounds which have led to many studies and some controversy since the 1970s, particularly because of the lack of irrefutable proof of the occurrence
Combes, Christèle, Rey, Christian
core   +1 more source

Flore et communautés végétales des mares des carrières de phosphates abandonnées du sud-est du Togo

open access: yesRevue Ecosystèmes et Paysages, 2022
Faute de données scientifiques de base, les mares des carrières abandonnées de phosphates du sud du Togo ne sont pas dotées de plans d’aménagement conséquents. Elles subissent par ailleurs de fortes pressions anthropiques.
Djangbedja Minkilabe
doaj   +1 more source

A new occurrence of samuelsonite in the Buranga Pegmatite, Rwanda [PDF]

open access: yesBulletin of the Geological Society of Finland, 1992
A new occurrence of the rare mineral species, samuelsonite, is reported from the Buranga pegmatite, Rwanda, in close association with gatumbaite and burangaite, as aggregates of bladed crystals imbedded in trolleite and in bertossaite.
A.-M. Fransolet   +2 more
doaj   +1 more source

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