Results 41 to 50 of about 9,697 (144)

Determinação do teor de edta remanescente em soluções de limpeza de equipamentos industriais Determination of edta content in cleaning solutions after their use in industrial equipaments

open access: yesQuímica Nova, 2007
Cleaning solutions containing EDTA are widely employed to remove incrustation despite of the costs involved. The free content of EDTA in commercial solutions may be determined by mixing an aliquot to ammonium oxalate and using a standard calcium solution
Arnaldo Antonio Rodella
doaj   +1 more source

Relationship Between Available Fe and its Chemical Fractions in Some Calcareous Soils of East Azarbaijan Province

open access: yesعلوم آب و خاک, 2017
In this research available iron was measured in 21 calcareous surface soil samples (0-30 cm) by five methods including DTPA, AB-DTPA, AC-EDTA, hydroxylamine, reference ammonium oxalate and rapid ammonium oxalate.
A. Reyhanitabar   +2 more
doaj  

One-year observations of size distribution characteristics of major aerosol constituents at a coastal receptor site in Hong Kong – Part 1: Inorganic ions and oxalate [PDF]

open access: yesAtmospheric Chemistry and Physics, 2014
Size distribution data of major aerosol constituents are essential in source apportioning of visibility degradation, testing and verification of air quality models incorporating aerosols.
Q. Bian, X. H. H. Huang, J. Z. Yu
doaj   +1 more source

An Increase Incidence in Uric Acid Nephrolithiasis: Changing Patterns [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2016
Introduction: Nephrolithiasis is a complex disease affecting all age groups globally. As the causative factors for nephrolithiasis rises significantly, its incidence, prevalence and recurrence continues to baffle clinicians and patients.
Asha Kumari   +7 more
doaj   +1 more source

THE REACTION BETWEEN AMMONIUM OXALATE AND IODINE

open access: yes, 1949
The reaction between ammonium oxalate and iodine has been studied both in light and in dark: The results obtained are similar to those obtained in the case of potassium oxalate and iodine. Thus, in dark the reaction is unimolecular with respect to iodine and ammonium oxalate. but becomes semi-molecular with respect to iodine in light.
W. V. BHAGWAT   +2 more
openaire   +1 more source

Effective collection of protein-enriched cells from green tea residue: An innovative process for leaf protein production

open access: yesCurrent Research in Food Science
Green tea residue (GTR) contains a high protein content. However, the protein in GTR can't be effectively extracted using traditional methods. Thus, a novel method using ethylenediamine tetraacetic acid (EDTA), ammonium oxalate, or Celluclast® 1.5 L were
Chen Zhang   +3 more
doaj   +1 more source

Antilithiatic Activity of phlorotannin rich extract of Sarghassum Wightii on Calcium Oxalate Urolithiais – In Vitro and In VivoEvaluation

open access: yesInternational Brazilian Journal of Urology, 2015
Purpose:Urolithiasis is a common urological disorder responsible for serious human affliction and cost to the society with a high recurrence rate. The aim of the present study was to systematically evaluate the phlorotannin rich extract of Sargassum ...
D. Sujatha   +4 more
doaj   +1 more source

Design of Composite Photocatalyst of TiO2 and Y-Zeolite for Degradation of 2-Propanol in the Gas Phase under UV and Visible Light Irradiation

open access: yesMolecules, 2014
Hydrophobic Y-zeolite (SiO2/Al2O3 = 810) and TiO2 composite photocatalysts were designed by using two different types of TiO2 precursors, i.e., titanium ammonium oxalate and ammonium hexafluorotitanate. The porous structure, surface property and state of
Takashi Kamegawa   +3 more
doaj   +1 more source

Ammonium oxalate-assisted synthesis of Gd2O3 nanopowders

open access: yesCeramics International, 2019
The impacts of co-precipitation reaction temperature and duration, as well as calcination temperature and duration, on the particle morphology and properties of gadolinia (Gd2O3) nanopowders were investigated. Thermogravimetric curve of thermally treated gadolinium oxalate (Gd2(C2O4)3) showed that pure stable cubic phase Gd2O3 nanopowders could be ...
Foo, Yuan-Teng   +3 more
openaire   +4 more sources

A Novel Approach to Carbonate Stone Conservation: Induced Calcium Oxalate Formation Through the Application of Ammonium N-Ethyloxamate (AmEtOxam) on White Carrara Marble

open access: yesMolecules
Ammonium N-ethyloxamate (AmEtOxam) was synthesized, fully characterized by microanalytical and spectroscopic means, and assayed as a precursor of calcium oxalate, acting as a protecting agent for white Carrara marble.
Simone Murgia   +12 more
doaj   +1 more source

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