Porous structure of thick fiber webs

The effect of calcium activation of skinned fiber bundles on the structure of Limulus thick filaments

Here we present evidence that strongly suggests that the well-documented phenomenon of A-band shortening in Limulus telson muscle is activation dependent and reflects fragmentation of thick filaments at their ends. Calcium activation of detergent-skinned fiber bundles of Limulus telson muscle results in large decreases in A-band (from 5.1 to 3.3 microns) and thick filament (from 4.1 to 3.3 micr...

Global structure of webs in codimension one

In this paper, we describe the global structure of webs in codimension one, and study in particular their singularities (the caustic). We define and study different concepts which have no interest locally near regular points, such as the type, the reducibility, the quasi-smoothness, the CIproperty (complete intersection), the dicriticity.... As an example of application, we explain how the alge...

Structure and Properties of a Natural Celulosic Hollow Fiber

The interaction of thermal radiation with conduction and laminar natural convection in a vertical circular pin, situated at participating gas, is numerically investigated. An absorbing and emitting gas is considered, and treated to be a gray participating media. Under the idealizing of gray gas, the Rosselan4 approximation is employed to describe the radiative heat flux in the energy equation. ...

Distribution of Fiber Intersections in Two-Dimensional Random Fiber Webs – A Basic Geometrical Probability Model

It is of great mathematical significance and practical importance that the number of fiber intersections and uniformity within a unit area of a non-woven fiber web changes with the number and lengths of fibers as well as with aggregate length. The numerical relationships, while most important for imparting the desired physical and mechanical properties of the resulting fabric, are complex and n...

Variation in network structure among food webs