Results 41 to 50 of about 175,835 (180)
Uncatalyzed Guanosine Phosphorylation under Potentially Prebiotic Conditions
Chemistry – A European Journal, EarlyView.Pyrophosphate acts as phosphorylating agent of guanosine under simple wet‐dry cycles without condensing agent and inorganic catalysts to afford cyclic guanosine monophosphate derivatives useful for oligomerization in prebiotic processes. ABSTRACT The phosphorylation of nucleosides and their subsequent polymerization are key issues in the study of the ...
Martina Proietti +5 more
wiley +1 more source
Engineering amine-modified ammonium polyphosphate for enhancing flame retardancy and smoke suppression of vinyl ester resin [PDF]
Vinyl ester resin (VER), as a common thermosetting resin, has been widely used in many engineering fields. However, VER suffers from intrinsic flammability, and it can’t meet the increasingly stringent fire safety requirements.
Hou, Boyou +10 more
core +1 more source
Frontiers in Materials, 2022 Phosphomolybdic acid (PMA) as a synergist was added into polyurethane (PU) rigid foam with ammonium polyphosphate (APP) to improve its flame retardancy and thermal stability. The combustion performance of PU was studied by limiting oxygen index (LOI), UL-
Zhirong Xu +6 more
doaj +1 more source
Learning Strategies from Nature's Blueprint to Cyclic Carbonate Synthesis
ChemSusChem, Volume 18, Issue 6, March 15, 2025.The development of sustainable synthetic methods for cyclic carbonates draws inspiration from nature, focusing on eco‐friendly processes and renewable resources like CO2 and biomass. This review explore various CO2 activation mechanisms, green chemistry principles, and green catalysts.
Erika Saccullo +4 more
wiley +1 more source
FOLIAR APPLICATION OF POTASSIUM AND PHOSPHORUS ON TWO CITRUS CULTIVARS
Journal of Soil Sciences and Agricultural Engineering, 2012 A field experiment was conducted with Valancia orange and Balady mandarin trees grew in clay loam soil at Orchard Sids Horticultural Research Station, Beni Suef Governorate, Egypt, for two consecutive seasons (2008 and 2009) to investigate the effects of
Amel L. Abd El-Latif, S.T. Abou - Zied
doaj +1 more source
Effect of ammonium polyphosphate on combustion and thermal degradation of aliphatic polyamides [PDF]
Makromolekulare Chemie. Macromolecular Symposia, 1993 AbstractChain fragments with amide and imide groups are the most abundant degradation products of aliphatic polyamides (APA) which derive from scission of the N‐alkylamide bond (‐CH2‐NH‐). In the case of polyamide 6.6 (PA‐6.6), also carbodiimide structures and methyl chain ends are formed, which derive from scission of ‐CH2‐C(=O)‐ bond.
LEVCHIK S. V, COSTA L, CAMINO, GIOVANNI
openaire +2 more sources
Fire‐Safe Polymeric Insulation Foams for Energy‐Efficient and Low‐Carbon Buildings
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.This review systematically summarizes recent advances in fire‐safe polymeric insulation foams, emphasizing the balance among flame retardancy, thermal insulation, mechanical reliability, and long‐term durability. By linking material‐level thermophysical properties with building cooling‐energy demand and operational carbon emissions, it establishes a ...
Qinhe Guo +10 more
wiley +1 more source
AgronomyThe global phosphate (P) rock shortage has become a significant challenge. Furthermore, the misalignment between crops, soil, and P usage exacerbates P rock wastage in agriculture.
Chutao Liang +4 more
doaj +1 more source
四川大学学报. 自然科学版, 2023 Vinyl ester resin (VER) is a widely used material due to its good corrosion resistance and excellent physical properties. However, its extreme flammability limits its use in many fields.
LIN Yu-Xin +3 more
doaj
Fire and Materials, Volume 49, Issue 3, Page 329-346, April 2025.ABSTRACT This study investigates the postfire mechanical properties of epoxy glass‐fiber reinforced composites (EP GFRCs) using increasing concentrations of ammonium polyphosphate (APP) and inorganic silicate (InSi) to modify the char and fire residue.
Sruthi Sunder +5 more
wiley +1 more source