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Showing 25 to 36 of 190 entries
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Metal oxalates in paints: a Raman investigation on the relative reactivities of different pigments to oxalic acid solutions.

Analytical and bioanalytical chemistry

Zoppi A, Lofrumento C, Mendes NF, Castellucci EM.
PMID: 20225056
Anal Bioanal Chem. 2010 May;397(2):841-9. doi: 10.1007/s00216-010-3583-1. Epub 2010 Mar 12.

One degradation phenomenon that occurs in artworks is the formation of metal oxalates on their surfaces. In order to gain insight into the inclination of pigments to produce oxalates, nine pigments including Na, Ca, Fe, Pb and Cu cations...

Crystal growth, structural characterization, and magnetic properties of new uranium(IV) containing mixed metal oxalates: Na2U2M(C2O4)6(H2O)4 (M = Mn2+, Fe2+, Co2+, and Zn2+).

Inorganic chemistry

Yeon J, Smith MD, Sefat AS, zur Loye HC.
PMID: 23374115
Inorg Chem. 2013 Feb 18;52(4):2199-207. doi: 10.1021/ic3026733. Epub 2013 Feb 01.

A series of new mixed-metal oxalates containing U(4+) and divalent transition metal cations, Na(2)U(2)M(C(2)O(4))(6)(H(2)O)(4) (M = Mn(2+), Fe(2+), Co(2+), and Zn(2+)), were synthesized via a hydrothermal route and structurally characterized by single crystal X-ray diffraction. All of the materials...

Oxalate content of foods and its effect on humans.

Asia Pacific journal of clinical nutrition

Noonan SC, Savage GP.
PMID: 24393738
Asia Pac J Clin Nutr. 1999 Mar;8(1):64-74.

Oxalic acid and its salts occur as end products of metabolism in a number of plant tissues. When these plants are eaten they may have an adverse effect because oxalates bind calcium and other minerals. While oxalic acid is...

Crystal packing and melting temperatures of small oxalate esters: the role of C-H···O hydrogen bonding.

Acta crystallographica. Section B, Structural science

Joseph S, Sathishkumar R, Mahapatra S, Desiraju GR.
PMID: 22101542
Acta Crystallogr B. 2011 Dec;67:525-34. doi: 10.1107/S0108768111037487. Epub 2011 Oct 13.

The simple dialkyl oxalates are generally liquids at room temperature except for dimethyl and di-tert-butyl oxalate which melt at 327 and 343 K. The crystal structures of diethyl, di-iso-propyl, di-n-butyl, di-tert-butyl and methyl ethyl oxalates were determined. The liquid...

The oxime portmanteau motif: released heteroradicals undergo incisive EPR interrogation and deliver diverse heterocycles.

Accounts of chemical research

Walton JC.
PMID: 24654991
Acc Chem Res. 2014 Apr 15;47(4):1406-16. doi: 10.1021/ar500017f. Epub 2014 Mar 21.

Selective syntheses are now available for compounds of many classes, based on C-centered radicals, exploiting a diverse range of mechanisms. The prospect for chemistry based around N- and O-centered radicals is probably more favorable because of the importance of...

Targeted cellular ionic calcium chelation by oxalates: Implications for the treatment of tumor cells.

Cancer cell international

Embi A, Scherlag BJ, Embi PJ, Menes M, Po SS.
PMID: 23216811
Cancer Cell Int. 2012 Dec 08;12(1):51. doi: 10.1186/1475-2867-12-51.

BACKGROUND: In malignant melanoma, it has been published that up to 40% of cancer patients will suffer from brain metastasis. The prognosis for these patients is poor, with a life expectancy of 4 to 6 months. Calcium exchange is...

Structure and magnetism of new hybrid cobalt hydroxide materials built from decorated brucite layers.

Dalton transactions (Cambridge, England : 2003)

Keene TD, Light ME, Hursthouse MB, Price DJ.
PMID: 21327226
Dalton Trans. 2011 Mar 28;40(12):2983-94. doi: 10.1039/c0dt01007c. Epub 2011 Feb 15.

The structure, synthesis and magnetic properties of three new complex cobalt hydroxyl oxalates are presented, showing a modification of the 2-D double layer hydroxide structure. Co(12)(OH)(18)(ox)(3)(pip) [ox = oxalate, C(2)O(4)(2-); pip = piperazine, C(4)N(2)H(10)] (1), is essentially built from...

High temperature structural study of Gd-doped ceria by synchrotron X-ray diffraction (673 K ≤ T ≤ 1073 K).

Inorganic chemistry

Artini C, Pani M, Lausi A, Masini R, Costa GA.
PMID: 25192043
Inorg Chem. 2014 Oct 06;53(19):10140-9. doi: 10.1021/ic5011242. Epub 2014 Sep 05.

The crystallographic features of Gd-doped ceria were investigated at the operating temperature of solid oxides fuel cells, where these materials are used as solid electrolytes. (Ce(1-x)Gd(x))O(2-x/2) samples (x = 0.1, 0.3, 0.5, 0.7) were prepared by coprecipitation of mixed...

Spectrum of urinary stone composition in Northwestern Rajasthan using Fourier transform infrared spectroscopy.

Indian journal of urology : IJU : journal of the Urological Society of India

Bhat A, Singh V, Bhat M, Kumar V, Bhat A.
PMID: 29692509
Indian J Urol. 2018 Apr-Jun;34(2):144-148. doi: 10.4103/iju.IJU_363_16.

INTRODUCTION: The aim of this study was to evaluate the chemical composition of urinary stones and pattern of changes according to the patient's age in Northwestern Rajasthan using Fourier transform infrared (FTIR) spectroscopy.MATERIALS AND METHODS: A prospective study of...

Radical Deoxychlorination of Cesium Oxalates for the Synthesis of Alkyl Chlorides.

Organic letters

Su JY, Grünenfelder DC, Takeuchi K, Reisman SE.
PMID: 30062894
Org Lett. 2018 Aug 17;20(16):4912-4916. doi: 10.1021/acs.orglett.8b02045. Epub 2018 Jul 31.

A radical deoxychlorination of cesium oxalates has been developed for the preparation of hindered secondary and tertiary alkyl chlorides. The reaction tolerates a number of functional groups, including ketones, alcohols, and amides, and provides complementary reactivity to standard deoxychlorination...

Effect of Re-Etching of Oxalate-Occluded Dentin on Microleakage of Composite Resin Restorations.

Journal of dentistry (Tehran, Iran)

Saffarpour A, Ghavam M, Saffarpour A, Sadighi K, Kharazifard MJ.
PMID: 28127325
J Dent (Tehran). 2016 Sep;13(5):318-324.

OBJECTIVES: This study aimed to assess the effect of re-etching of desensitized dentin for five and 10 seconds on marginal microleakage of composite restorations.MATERIALS AND METHODS: Class V cavities (4×2×2mm) were prepared on the buccal surfaces of 64 third...

Isolation, differentiation, and characterization of mesenchymal stem cells from human bone marrow.

Gastroenterology and hepatology from bed to bench

Baghaei K, Hashemi SM, Tokhanbigli S, Asadi Rad A, Assadzadeh-Aghdaei H, Sharifian A, Zali MR.
PMID: 29118937
Gastroenterol Hepatol Bed Bench. 2017;10(3):208-213.

AIM: We describe the minimum requirements and a simplified method for isolation and characterization of mesenchymal stem cells (MSCs) from human bone marrow.BACKGROUND: MSCs are well known adult stem cells present in many tissues such as adipocytes, chondrocytes, osteoblasts,...

Showing 25 to 36 of 190 entries