Results 291 to 300 of about 834,609 (355)

Human spermatogenesis leads to a reduced nuclear pore structure and function

open access: yes
Santos Ád   +10 more
europepmc   +1 more source

PORE STRUCTURE OF SOLIDS

Pure and Applied Chemistry, 1976
Abstract A small grain of iron catalyst, used in the synthesis of ammonia, has an external surface of about 1 cm2/g, but it has an internal surface of 100,000 cm2/g. Since catalysis takes place on the surface, obviously the surface in the pores is of vital importance.
openaire   +1 more source

Pore structure analysis without a pore shape model

Journal of Colloid and Interface Science, 1967
Abstract All methods presently employed for pore structure analysis are based on idealized models for the pore shapes. Most investigators assume that the pores are cylindrical; some use the parallel plate pore model. The extent to which valid inferences can be drawn from the structure curves based on such idealizations is open to question.
Stephen Brunauer   +2 more
openaire   +1 more source

Pore structure of shale

Fuel, 2015
Abstract Pore connectivity is limited in shale formations, unlike in conventional reservoirs, for which cyclic void models, such as the regular-lattice model, are often used to represent the connectivity. In the cyclic models, the random assignment of throat sizes to lattice elements leads to a plateau-like variation of a capillary pressure with ...
A. Sakhaee-Pour, Steven L. Bryant
openaire   +1 more source

Structural analysis of mitochondrial pores

Experientia, 1990
Structural information about the channel in the mitochondrial outer membrane, derived from sequence analysis and electron microscopy of two-dimensional crystals, is summarized. A model for the channel is presented, consisting of a cylindrical beta-barrel that is formed by one or two 30-kDa polypeptides, with an alpha-carbon backbone diameter of 3.8 nm.
openaire   +2 more sources

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