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Article
Multiple steady states on an adsorbent surface
(American Institute of Physics Publising LLC, 1986)
The occurrence of multiple steady states in a system formed by monomers adsorbed on a lattice, with attractive interaction between nearest adatoms, is demonstrated. This fact causes hysteresis in the adsorption-desorption ...
Article
Plastic deformation down to 4.2 K of CoO single crystals and T.E.M. observation of dislocations
(EDP Sciences, 1988)
Plastic deformation of CoO has been performed at 4.2 K by compression of single crystals along <100>. The influence of thermodynamic conditions of specimen preparation has been shown. The dislocation structure observed by ...
Article
Estructura de dislocaciones en ZRO2 totalmente estabilizado deformado a alta temperatura
(1989)
Se ha estudiado por microscopía electrónica de transmisión la microestructura de deformación a altas temperaturas (1.300-1.550°C) de monocristales de Zr02-Y203 totalmente estabilizados. La variación observada en la ...
Article
Kinetics of desorption from a heterogeneous surface
(American Institute of Physics Publising LLC, 1982)
Mathematical equations governing kinetics of desorption from heterogeneous surfaces are derived from a master equation with the assumption that only nearest-neighbor adatoms interact. A number of cases are analyzed: random, ...
Article
Mechanism of surface dehydration of anatase (TiO2)
(American Institute of Physics Publising LLC, 1985)
A comparative study of the dehydration of the (001) and (111) surfaces of TiO2 (anatase) has been made starting from a master equation and introducing suitable transition probabilities. From the experimental data considered, ...
Article
Structure of 1-Methyl-5-(D-ga/acto-1 ,2,3,4,5-pentaacetoxypentyl)- 3-phenylpyrazole
(International Union of Crystallography, 1989)
C25H30N2010, Mr = 518·5, orthorhombic, P2 1212¡, a= 12·303 (2), b =:= 25·071 (4), e=pentyl chain range from 45 to 80°. The crystal cohesion is mainly dueto van der Waa1s interactions 8·823 (5) A, V= 2721·4 (16) ...
Article
X-Ray Structure of 8alpha-Acetoxy-1,3,4,10-Tetrahydro-1alpha,10alpha-Epoxyachillin
(International Union of Crystallography, 1986)
(5aI-I,6/~-I, 11 aH)-8a-Acetoxy- 1,5-dihydro-2- oxo-lct,10ct-epoxyguaian-6,12-olide, C~7H2206, Mr= 322.3, orthorhombic P2~212~, a= 14.964(6), b= 17.057(4), c=6.218(4)A, V=1587(1)A 3, Z=4, D,n=l.349(5), D x=l.349Mgm -3, ...
Article
Structure of 5-(p-n-Glucopyranosyl)barbituric Acid Trihydrat
(International Union of Crystallography, 1987)
C 1oH15N 307.3H20, M,= 343·3, monoclinic, P21, a= 10·883 (3), b = 12·497 (20), e=rings for the two molecules are 80·9 (3) and 90·3 (3)0 • The molecules are linked by an extensive three10·553 (4)Á, {3= 91·05 ...
Article
Structure and Absolute Configuration of l'-(p-Bromophenyl)-3'-ethyl-l',Y,4',5'- tetrahydro- 1,2-dideoxy-u-L-glucofuranoso[2,l-d]imidazole-2'-thione Monohydrate,* C15H19BrN204S.H20
(International Union of Crystallography, 1985)
M r = 421-30, monoclinic, P2~, a = 7.531 (1), b=8.148(4), c= 14. 625 (2) ,~, fl=97.14(1) °, V= 890.5 (5) ,~3, Z= 2, Din= 1.58 (1), Dx= 1.571 Mg m -3, Mo Kct, 2 = 0.7107 ,~,/~ = 2.42 mm -1, F(000)=432, T= 300 K, R =0.065 ...
Article
Structure of 5-fl-D-Galactopyranosyl- 1,3-dimethylbarbituric Acid Monohydrate,* C12H1sN2Os.H20
(International Union of Crystallography, 1985)
Mr=336'30, orthorhombic, P21212 ~, a= 9.147(1), b=23.054(2), c=6.921(1)A, V= 1459.5(3)A 3, Z=4, Dm=l'53(1), Dx= 1.531Mgm -3, MoKa, 2=0.7107A, #=0.12mm -1, F(000)= 712, T= 300K, R =0.055 for 1623 observed independent ...