Results 31 to 40 of about 9,696 (146)
Poly[dimethylammonium [aquadi-μ2-oxalato-samarate(III)] trihydrate]
Acta Crystallographica Section E, 2011 In the title complex, {(C2H8N)[Sm(C2O4)2(H2O)]·3H2O}n, the SmIII atom is chelated by four oxalate ligands and one water molecule forming a distorted tricapped trigonal–prismatic geometry. Each oxalate ligand chelates to two SmIII atoms,
Yao-Kang Lv +3 more
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Molecules, 2023 Ammonium N-(pyridin-2-ylmethyl)oxamate (AmPicOxam), synthesized from O-methyl-N-(pyridin-2-ylmethyl)oxamate, was spectroscopically and structurally characterized and assayed as a novel precursor for the protection and consolidation of carbonate stone ...
Anna Pintus +14 more
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Crystallurical profile in sheep after ammonium chloride supplementation
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2022 Although urinary crystals are habitual components, urolithiasis formation is always preceded by these concretions. We aimed to identify the change in the crystalline profile in sheep supplemented with ammonium chloride.
F.C. Navarro +5 more
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Poly[dimethylammonium [aquadi-μ2-oxalato-yttriate(III)] trihydrate]
Acta Crystallographica Section E, 2011 The title complex, {(C2H8N)[Y(C2O4)2(H2O)]·3H2O}n, was obtained accidentally under hydrothermal conditions. The YIII atom is chelated by four oxalate ligands and one water molecule resulting in a distorted tricapped trigonal–prismatic ...
Yao-Kang Lv +4 more
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Degree of phosphorus saturation threshold for minimizing P losses by runoff in cropland soils of Southern Brazil [PDF]
Pesquisa Agropecuária Brasileira, 2016 The objective of this work was to assess the risk of phosphorus losses by runoff through an index based on the degree of P saturation (DPS), in cropland soils of Southern Brazil.
Leandro Bortolon +6 more
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Crystal structure of dimethylammonium hydrogen oxalate hemi(oxalic acid) [PDF]
Acta Crystallographica Section E Crystallographic Communications, 2015 Single crystals of the title salt, Me2NH2+·HC2O4−·0.5H2C2O4, were isolated as a side product from the reaction involving Me2NH, H2C2O4and Sn(n-Bu)3Cl in a 1:2 ratio in methanol or by the reaction of the (Me2NH2)2C2O4salt and Sn(CH3)3Cl in a 2:1 ratio in ethanol. The asymmetric unit comprises a dimethylammonium cation (Me2NH2+), an hydrogenoxalate anion
Waly Diallo +4 more
openaire +3 more sources
Revista Brasileira de Ciência do Solo, 2010 Apesar das modernas e sofisticadas técnicas disponíveis, procedimentos de extração seletiva ainda são de considerável valor para a caracterização dos solos e para o entendimento dos processos pedogenéticos, sobretudo em ambientes e solos pouco estudados,
Maurício Rizzato Coelho +4 more
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Revista de la Facultad de Ciencias, 2018 The selective and sequential extraction of the fractions of Al, Fe and Si (potassium chloride, sodium pyrophosphate, ammonium acid oxalate, dithionite-citrate-bicarbonate and sodium hydroxide) of a Andisol of the East of Antioquia was studied for genetic
Nicolás Pérez Echavarría +3 more
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Urinary Stone Analysis of 1,000 Patients in Southern Taiwan
Kaohsiung Journal of Medical Sciences, 2007 Urolithiasis is a common urologic disease. Stones may occur in the kidney, ureter, or urinary bladder. We collected 1,000 stone samples in the subtropical area of southern Taiwan. Stone components were analyzed by Fourier transform infrared spectroscopy.
Yii-Her Chou +9 more
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Química 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
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