Structural Effects in the Fracture of Concrete

the effects of resonance with Jupiter in the system of short-period comets

International Astronomical Union Colloquium ◽

10.1017/s0252921100033959 ◽

1974 ◽

Vol 22 ◽

pp. 193-203

Author(s):

L̆ubor Kresák

Keyword(s):

Structural Effects ◽

Order Resonance ◽

Mean Motion ◽

Short Period ◽

The Mean ◽

Compound Effect ◽

Low Order

AbstractStructural effects of the resonance with the mean motion of Jupiter on the system of short-period comets are discussed. The distribution of mean motions, determined from sets of consecutive perihelion passages of all known periodic comets, reveals a number of gaps associated with low-order resonance; most pronounced are those corresponding to the simplest commensurabilities of 5/2, 2/1, 5/3, 3/2, 1/1 and 1/2. The formation of the gaps is explained by a compound effect of five possible types of behaviour of the comets set into an approximate resonance, ranging from quick passages through the gap to temporary librations avoiding closer approaches to Jupiter. In addition to the comets of almost asteroidal appearance, librating with small amplitudes around the lower resonance ratios (Marsden, 1970b), there is an interesting group of faint diffuse comets librating in characteristic periods of about 200 years, with large amplitudes of about±8% in μ and almost±180° in σ, around the 2/1 resonance gap. This transient type of motion appears to be nearly as frequent as a circulating motion with period of revolution of less than one half that of Jupiter. The temporary members of this group are characteristic not only by their appearance but also by rather peculiar discovery conditions.

Download Full-text

Brain scans show structural effects of chemotherapy

PsycEXTRA Dataset ◽

10.1037/e458602008-005 ◽

2006 ◽

Keyword(s):

Structural Effects ◽

Brain Scans

Download Full-text

Perspectives on structural effects in organic chemistry

Journal de Chimie Physique ◽

10.1051/jcp/1992891557 ◽

1992 ◽

Vol 89 ◽

pp. 1557-1566 ◽

Cited By ~ 3

Author(s):

RW Taft

Keyword(s):

Organic Chemistry ◽

Structural Effects

Download Full-text

Critical Phenomena and Structural Effects in Combustion of Disordered Heterogeneous Mixtures

Heat Transfer Research ◽

10.1615/heattransres.v38.i1.60 ◽

2007 ◽

Vol 38 (1) ◽

pp. 57-69 ◽

Cited By ~ 1

Author(s):

P. S. Grinchuk ◽

O. S. Rabinovich

Keyword(s):

Critical Phenomena ◽

Structural Effects

Download Full-text

Structural effects on print-through and set-off

Nordic Pulp & Paper Research Journal ◽

10.3183/npprj-2012-27-03-p596-603 ◽

2012 ◽

Vol 27 (3) ◽

pp. 596-603

Author(s):

Gary Chinga- Carrasco ◽

Kenneth Aasarød ◽

Berit Leinsvang ◽

Mikael Bouveng ◽

Per-Åke Johansson

Keyword(s):

Structural Effects

Download Full-text

Vapour-Liquid Equilibria and Excess Thermodynamic Properties in Binary Systems of Cyclopentanone + Chloroalkanes in View of the Disquac and Unifac Group Contribution Models Extention

Revista de Chimie ◽

10.37358/rc.08.5.1823 ◽

2008 ◽

Vol 59 (5) ◽

Author(s):

Alexandru Birhala ◽

Dana Dragoescu ◽

Mariana Teodorescu

Keyword(s):

Binary Systems ◽

Excess Enthalpy ◽

Group Contribution ◽

Excess Properties ◽

Structural Effects ◽

Liquid Equilibrium ◽

Excess Thermodynamic Properties ◽

Different Types ◽

Thermodynamic Excess Properties ◽

Thermodynamic Excess

The data available in the literature and our recent data on vapour�liquid equilibrium (VLE), excess Gibbs energy, GE, and excess enthalpy, HE, for the homologous series of cyclopentanone + chloroalkane mixtures are examined in terms of the predictive group contribution models DISQUAC and UNIFAC. In our treatment, we present also how the structural effects and different types of molecular interactions are reflected by the thermodynamic excess properties of the mentioned series mixtures.

Download Full-text