Výsledky vyhledávání - "N. Armagˇan"

Use of R Factors in the Study of the Structural Defects in Phyllosilicates by X-ray Powder Diffraction

Autor: Hayrettin Küçükçelebi, Mehmet Taşer, C. Güler, N. Armagˇan

Publikováno v: Journal of Applied Crystallography. 30:55-58

The R factors employed in crystal structure analysis can also be used in connection with clay minerals to determine the amount of defects whose types are already known. For this purpose, using the unit-cell parameters of kaolinite with identical laye

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3cd0741b9e5188f0606d26aff9a8c4a5
https://doi.org/10.1107/s0021889896008916

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X-ray diffraction studies on the arrangement of water molecules in a smectite. I.Homogeneous two-water-layer Na-beidellite

Autor: C. Tchoubar, N. Armagˇan, J. B. Brahim, G. Besson

Publikováno v: Journal of Applied Crystallography. 16:264-269

A method of indirect analysis of X-ray diffraction patterns of homogeneous hydrated microcrystalline silicates is introduced. This method is applied to a sodium beidellite of Rupsroth, Bavaria, Germany, hydrated with two water layers to determine all

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d4b7e8b0fd4fa7552372680f7bdbe1d9
https://doi.org/10.1107/s0021889883010353

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1,4,7,10-Tetraoxacyclododecane-uranyl nitrate dihydrate

Autor: N. Armagˇan

Publikováno v: Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 33:2281-2284

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9588dde20098ce5de145065a0304bbe7
https://doi.org/10.1107/s0567740877008206

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Rigid-body motion of the S2O32−group in thiosulphates

Autor: N. Armagˇan

Publikováno v: Acta Crystallographica Section A Foundations of Crystallography. 39:647-650

The recently published thermal parameters of Ba, Na, Mg, Ni, and NH4 thiosulphates have been analysed for the rigid-body motion of the S2O2-3 group using the TL and TLS treatments. In the cases of Ba, Na and NH4 the rigidity of the group has been est

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::37eda8ee57ec61eaecb2955219a19963
https://doi.org/10.1107/s0108767383001324

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An X-ray diffraction study of nickel thiosulphate hexahydrate

Autor: A. A. Uraz, Y. Elerman, N. Armagˇan

Publikováno v: Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 34:3330-3332

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::826d8ce49ec77c0f48b6567b337a529f
https://doi.org/10.1107/s0567740878010808

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Comments onThe rigid-body vibrations of molecules in crystalsby Burns, Ferrier & McMullan (1967)

Autor: N. Armagˇan, A. Yücel

Publikováno v: Acta Crystallographica Section A. 38:393-395

The rigid-body analysis of the thermal vibrations in seventeen molecular structures by Burns, Ferrier & McMullan [Acta Cryst. (1967), 22, 623-629] has been repeated and major discrepancies have been observed. The sources of errors have been diagnosed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d32261ea28c1104d44e9a88d8e654069
https://doi.org/10.1107/s0567739482000813

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Crystal data for barium thiosulphate monohydrate: BaS2O3. H2O

Autor: Y. Aka, Y. Elerman, A. A. Uraz, N. Armagˇan

Publikováno v: Journal of Applied Crystallography. 11:710-711

Barium thiosulphate monohydrate is orthorhombic, space group Pbcn, with cell dimensions a = 20.062 (4), b = 7.192 (1), c = 7.386 (1) A. Powder data are given and discrepancies in relation to the X-ray Powder Data File are discussed.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6120b66b864247a8da32946dd7bebddf
https://doi.org/10.1107/s0021889878014363

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TERRIG, a computer program for analysing thermal ellipsoids and rigid-body motions

Autor: A. Yücel, N. Armagˇan

Publikováno v: Journal of Applied Crystallography. 15:121-122

A program written in Fortran IV for the analysis of thermal ellipsoids and rigid-body motions is reported. The program calculates the thermal vibration ellipsoids of the atoms and performs the rigid-body motion calculations according to the TL method

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a83177e669369dcd8a91c4866dd6668
https://doi.org/10.1107/s0021889882011546

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Crystal data for ammonium thiosulphate: (NH4)2S2O3

Autor: Y. Elerman, A. A. Uraz, Y. Aka, N. Armagˇan

Publikováno v: Journal of Applied Crystallography. 11:709-709

Ammonium thiosulphate is monoclinic with cell dimensions a = 10.282 (9), b = 6.541 (6), c = 8.766 (9) A, β = 95.49 (9)°, space group C2, Cm or C2/m. Powder data are given.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5a64e94edd01df01c491755a0150e3da
https://doi.org/10.1107/s0021889878014351

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