Results 1 to 10 of about 2,566,141 (344)

Hydrodynamics of photoionized columns in the Eagle Nebula, M 16 [PDF]

open access: yes, 2001
We present hydrodynamical simulations of the formation, structure and evolution of photoionized columns, with parameters based on those observed in the Eagle Nebula.
Ward-Thompson, D.   +2 more
core   +2 more sources

Partition regularity without the columns property [PDF]

open access: yes, 2014
A finite or infinite matrix A with rational entries is called partition regular if whenever the natural numbers are finitely coloured there is a monochromatic vector x with Ax=0.
Barber, Ben   +3 more
core   +4 more sources

Critical Buckling Loads of the Perfect Hollomon's Power-law Columns [PDF]

open access: yes, 2012
In this work, we present analytic formulas for calculating the critical buckling states of some plastic axial columns of constant cross-sections. The associated critical buckling loads are calculated by Euler-type analytic formulas and the associated ...
Alejandro Sarria   +31 more
core   +3 more sources

Matrix Design for Optimal Sensing [PDF]

open access: yes, 2012
We design optimal $2 \times N$ ($2
Achanta, Hema Kumari   +2 more
core   +1 more source

Analytical modeling of reinforced concrete columns subjected to bidirectional shear [PDF]

open access: yes, 2017
Under general seismic loading, reinforced concrete columns may be subjected to lateral loads in more than one direction. Available experimental data on columns subjected to bidirectional forces indicate that higher levels of damage and a higher loss of ...
Bairán García, Jesús Miguel   +2 more
core   +2 more sources

Three years of greenhouse gas column-averaged dry air mole fractions retrieved from satellite – Part 2: Methane [PDF]

open access: yes, 2008
Carbon dioxide (CO2) and methane (CH4) are the two most important anthropogenic greenhouse gases. SCIAMACHY on ENVISAT is the first satellite instrument whose measurements are sensitive to concentration changes of the two gases at all altitude levels ...
Bergamaschi, P.   +5 more
core   +6 more sources

A parametric study on buckling of R/C columns exposed to fire [PDF]

open access: yes, 2016
Buckling of concrete columns is a major issue in fire design, since heating of the columns will result in loss of stiffness and strength in the outer concrete layers.
Caspeele, Robby   +2 more
core   +3 more sources

Growth of single-crystal columns of CoSi2 embedded in epitaxial Si on Si(111) by molecular beam epitaxy [PDF]

open access: yes, 1989
The codeposition of Si and Co on a heated Si(111) substrate is found to result in epitaxial columns of CoSi2 if the Si:Co ratio is greater than approximately 3:1. These columns are surrounded by a Si matrix which shows bulk-like crystalline quality based
Fathauer, R. W.   +3 more
core   +1 more source

Combining ground penetrating radar and seismic surveys in the assessment of cultural heritage buildings: The study of roofs, columns, and ground of the gothic church Santa Maria del Mar, in Barcelona (Spain) [PDF]

open access: yes, 2019
Combined non-destructive techniques are applied in the study of a historical building in Barcelona. Santa Maria del Mar is a magnificent Mediterranean gothic church built between 1329 and 1383.
Caselles Magallón, Josep Oriol   +4 more
core   +2 more sources

Tetraammonium Tetrametaphosphimate Tetrahydrate [PDF]

open access: yes, 1998
The tetrametaphosphimate ring in the title compound, (NH4)4+(PO2NH)4-.4H2O exhibits a chair conformation. The tetrametaphosphimate rings are linked by N-HO bonds forming columns along [100].
Schnick, Wolfgang, Stock, Norbert
core   +1 more source

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