Results 1 to 10 of about 9,697 (144)
Ammonium Niobium Oxalate (ANO) [PDF]
SynOpen, 2021 Niobium is a metal whose major reserves are found in Brazil. Ammonium Niobium Oxalate (ANO) is a stable, cheap, readily available and water-soluble niobium acid catalyst still underrepresented in literature. This manuscript highlights some interesting applications of ANO as a promising catalyst to Green and Sustainable Chemistry.
Lorena Fortes +4 more
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Optimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties [PDF]
Scientific Reports, 2021 Pectin is a kind of natural and complex carbohydrates which is extensively used in food, chemical, cosmetic, and pharmaceutical industries. Fresh sunflower (Helianthus annuus L.) heads were utilized as a novel source of pectin extracted by ammonium ...
Xuemei Ma +5 more
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Automatic classification of kidney stone components based on smartphone microscopy and the GoogLeNet model [PDF]
BMC UrologyBackground To develop an automated classification system for urinary stone composition by integrating smartphone-based microscopic imaging (TIPSCOPE) with the GoogLeNet architecture, with the goal of enabling rapid, accurate, and cost-effective analysis ...
Yuxuan Du +18 more
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Crystal structure of bis-(allyl-ammonium) oxalate. [PDF]
Acta Crystallogr Sect E Struct Rep Online, 2014 The title salt, 2C3H8N+·C2O42−, crystallized with six independent allylammonium cations and three independent oxalate dianions in the asymmetric unit. One of the oxalate dianions is nearly planar [dihedral angle between CO2planes = 1.91 (19)°], while the other two are twisted with angles of 11.3 (3) and 26.09 (13)°. One cation has a synperiplanar (cis)
Dziuk B, Zarychta B, Ejsmont K.
europepmc +6 more sources
Hydrothermal Crystallization of Niobium Oxide Nanorods Studied by 93Nb Nuclear Magnetic Resonance
Chinese Journal of Magnetic Resonance, 2023 The crystallization process of hydrothermally synthesizing niobium oxide nanorods with ammonium niobium oxalate precursor was investigated using 93Nb NMR, combined with X-ray powder diffraction, transmission electron microscopy and quantum chemistry ...
SHEN Changzhi +3 more
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Simultaneous Degumming and Extraction of a Nature Gum from Raw Hemp
Journal of Natural Fibers, 2022 In order to develop a green and efficient hemp degumming process, an ammonium oxalate-enzyme combined process was proposed and the pectin was extracted from the degumming solution. Pectin can be used as a stabilizer, gel, emulsifier, and thickener in the
Zhenrong Zheng +3 more
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Do Aqua Regia and EPA 3051A methods underestimate the pseudo-total P content in clay soil fraction? [PDF]
Ciência e Agrotecnologia, 2020 It is common the use of 3051A and aqua regia methods to assess the pseudo-total and total P contents in soil and in its fractions. However, previous study has shown the formation of large amounts of short-range order materials (SRO) in the residues of ...
Vander Freitas Melo +1 more
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Agronomy, 2022 Co-application of Aspergillus niger (A. niger) and phosphate rocks (PR) has been practiced by environmentalists for lead (Pb) remediation. The secretion of organic acid by A. niger usually dominates the dissolution of PR and Pb immobilization.
Yi Feng +6 more
doaj +1 more source
Hygroscopic behavior of atmospherically relevant water-soluble carboxylic salts and their influence on the water uptake of ammonium sulfate [PDF]
Atmospheric Chemistry and Physics, 2011 The hygroscopic behavior of atmospherically relevant water-soluble carboxylic salts and their effects on ammonium sulfate were investigated using a hygroscopicity tandem differential mobility analyzer (H-TDMA).
Z. J. Wu +4 more
doaj +1 more source
Molecules, 2018 Spinach (Spinacia oleracea L.) is one of most important leafy vegetables because of its high nutritional value and high oxalate content, which can be toxic with negative effects on human nutrition.
Xiaofeng Cai +5 more
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