Advanced Search
Display options
Filter resources
Text Availability
Article type
Publication date
Species
Language
Sex
Age
Showing 13 to 24 of 190 entries
Sorted by: Best Match Show Resources per page
Analysis of the CCRMP Oka-2 rare-earth reference mineral of the britholite-apatite series by electrothermal atomic-absorption and inductively-coupled plasma atomic-emission spectrometry.

Talanta

Gupta JG.
PMID: 18964456
Talanta. 1987 Dec;34(12):1043-7. doi: 10.1016/0039-9140(87)80156-x.

The lanthanides and yttrium in the Canadian Certified Reference Materials Project (CCRMP) new rare-earth mineral reference material, Oka-2, were determined by electrothermal atomic-absorption and inductively-coupled plasma atomic-emission spectrometry (ICPAES) after sample decomposition with acids and separation of the rare-earth...

RbCr(III)(C2O4)2.2H2O, Cs2Mg(C2O4)(2).(-)4H2O and Rb2Cu(II)(C2O4)2.2H2O: three new complex oxalate hydrates.

Acta crystallographica. Section C, Crystal structure communications

Kolitsch U.
PMID: 15004365
Acta Crystallogr C. 2004 Mar;60:m129-33. doi: 10.1107/S0108270104001945. Epub 2004 Feb 19.

Rubidium chromium(III) dioxalate dihydrate [diaquabis(micro-oxalato)chromium(III)rubidium(I)], [RbCr(C2O4)2(H2O)2], (I), and dicaesium magnesium dioxalate tetrahydrate [tetraaquabis(mu-oxalato)magnesium(II)dicaesium(I)], [Cs2Mg(C2O4)2(H2O)4], (II), have layered structures which are new among double-metal oxalates. In (I), the Rb and Cr atoms lie on sites with imposed 2/m symmetry and...

Synthesis of layered (2-D) V-based bimetallic oxalates from non-aqueous media that cannot be synthesized from aqueous media.

Dalton transactions (Cambridge, England : 2003)

Min KS, Miller JS.
PMID: 16705346
Dalton Trans. 2006 May 28;(20):2463-7. doi: 10.1039/b516198c. Epub 2006 Mar 06.

The reaction of (NBu4)3[V(III)(ox)3] (1, ox = oxalate) and M(II) (M = Fe, Co, Ni, Cu) ions in MeCN, leads to the isolation of V-based coordination polymers of [N(n-Bu)4][Fe(II)V(II)I(ox)3].0.30[[N(n-Bu)4](BF4)] (2), [N(n-Bu)4][Co(II)V(III)(ox)3].0.75[[N(n-Bu)4](BF4)] (3), [N(n-Bu)4][Ni(II)V(III)(ox)3].0.20[[N(n-Bu)4](BF4)].0.20MeCN (4), and [N(n-Bu)4][Cu(II)V(III)(ox)2](BF4)2 (5) composition. Due...

Spectrographic determination of the rare earths in high-purity graphite.

Talanta

Zmbova B.
PMID: 18960942
Talanta. 1971 Aug;18(8):755-9. doi: 10.1016/0039-9140(71)80124-8.

A spectrographic method has been developed for determination of the rare-earth elements in graphite. The rare earths are concentrated from ignited graphite on a calcium base. The impurities (Fe, V, Mn, Al, Ti) associated with the rare earths are...

Determination of rare-earth elements and yttrium in silicate rocks by sequential inductively-coupled plasma emission spectrometry.

Talanta

Roychowdhury P, Roy NK, Das DK, Das AK.
PMID: 18964890
Talanta. 1989 Dec;36(12):1183-6. doi: 10.1016/0039-9140(89)80049-9.

An ICP-AES method for determination of rare-earth elements (REE) and yttrium at trace levels in silicate rocks is described. The method involves decomposition of the rock sample by heating with a mixture of hydrofluoric and perchloric acid, followed by...

Available evidence does not support use of oxalates for dentine hypersensitivity.

Evidence-based dentistry

Poulsen S.
PMID: 21701547
Evid Based Dent. 2011;12(2):47. doi: 10.1038/sj.ebd.6400792.

DATA SOURCES: Medline, CENTRAL, LILACS, TRIP Database, National Guideline Clearinghouse, OPENSigle and a number of other medical / dental databases and websites, as well as reference lists.STUDY SELECTION: Randomised controlled trials and controlled clinical trials in any language that...

Directed synthesis of crystalline plutonium(III) and (IV) oxalates: accessing redox-controlled separations in acidic solutions.

Inorganic chemistry

Runde W, Brodnax LF, Goff G, Bean AC, Scott BL.
PMID: 19485387
Inorg Chem. 2009 Jul 06;48(13):5967-72. doi: 10.1021/ic900344u.

Both binary and ternary solid complexes of Pu(III) and Pu(IV) oxalates have been previously reported in the literature. However, uncertainties regarding the coordination chemistry and the extent of hydration of some compounds remain mainly because of the absence of...

Sub-chronic Hepatotoxicity of Anacardium occidentale (Anacardiaceae) Inner Stem Bark Extract in Rats.

Indian journal of pharmaceutical sciences

Okonkwo TJ, Okorie O, Okonta JM, Okonkwo CJ.
PMID: 21188045
Indian J Pharm Sci. 2010 May;72(3):353-7. doi: 10.4103/0250-474X.70482.

The extracts of Anacardium occidentale have been used in the management of different cardiovascular disorders in Nigeria. These have necessitated the assessment of the toxicity of this plant extract in sub-chronic administration. The inner stem bark of Anacardium occidentale...

Thermal phase stability and catalytic properties of Nanostructured TiO2-MgO sol-gel mixed oxides.

Journal of nanoscience and nanotechnology

Lopez T, Hernandez-Ventura J, Aguilar DH, Quintana P.
PMID: 19205249
J Nanosci Nanotechnol. 2008 Dec;8(12):6608-17.

Several compositions in the system TiO2-MgO were prepared via sol-gel method. The structural evolution of the samples was followed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and thermal analysis (DTA/TG). In order to study the crystalline phase...

5-Exo-cyclizations of pentenyliminyl radicals: inversion of the gem-dimethyl effect.

The journal of physical chemistry. A

Portela-Cubillo F, Alonso-Ruiz R, Sampedro D, Walton JC.
PMID: 19705814
J Phys Chem A. 2009 Sep 17;113(37):10005-12. doi: 10.1021/jp9047902.

This paper describes how the rates of 5-exo-ring closures of unsaturated iminyl radicals to pyrrolomethyl radicals respond to substituents in the pentenyl chain and at the C=N bond. Benzyl- and acyl oxime esters, as well as dioxime oxalates, were...

Polyfunctional inorganic-organic hybrid materials: an unusual kind of NLO active layered mixed metal oxalates with tunable magnetic properties and very large second harmonic generation.

Journal of the American Chemical Society

Cariati E, Macchi R, Roberto D, Ugo R, Galli S, Casati N, Macchi P, Sironi A, Bogani L, Caneschi A, Gatteschi D.
PMID: 17616190
J Am Chem Soc. 2007 Aug 01;129(30):9410-20. doi: 10.1021/ja0710712. Epub 2007 Jul 07.

Mixed M(II)/M(III) metal oxalates, as "stripes" connected through strong hydrogen bonding by para-dimethylaminobenzaldeide (DAMBA) and water, form an organic-inorganic 2D network that enables segregation in layers of the cationic organic NLO-phore trans-4-(4-dimethylaminostyryl)-1-methylpyridinium, [DAMS+]. The crystalline hybrid materials obtained have...

Renaissance patinas in Ubeda (Spain): mineralogic, petrographic and spectroscopic study.

Analytical and bioanalytical chemistry

Campos-Suñol MJ, Domínguez-Vidal A, Ayora-Cañada MJ, De la Torre-López MJ.
PMID: 18483811
Anal Bioanal Chem. 2008 Jun;391(3):1039-48. doi: 10.1007/s00216-008-2086-9. Epub 2008 Apr 30.

Different analytical techniques were used for microstructural and compositional analysis of the ochre-coloured patinas that appear on the calcarenite substrate of monuments in the historical settings of Ubeda and Baeza (Spain). Optical microscopy, scanning electron microscopy-energy dispersive x-ray spectrometry...

Showing 13 to 24 of 190 entries