It has been suggested that potentials measured with conventional microelectrodes in chemically or mechanically skinned muscle fibers arise from a Donnan equilibrium due to myofilament fixed charges. This hypothesis was tested in mechanically skinned frog (Rana pipiens) semitendinosus fibers by measuring the distribution potential (Ed) between fiber and bath with 3 M KCl-filled microelectrodes a...

This study compares the crossbridge kinetics of intact and skinned preparations from ferret cardiac muscles at 20 degrees C to determine whether skinning causes any alteration in the crossbridge response to an imposed length change. A papillary or trabecular muscle was isolated from the right ventricle, the muscle length adjusted to give the maximum twitch tension (Lmax), and the preparation wa...

Field observations and seismic interpretations testify that the front of Jura fold-and-thrust belt is still submitted to compressive deformation, but whether basement deforming (thick-skinned) or not (thin-skinned) an active question. We propose a mechanical point view using Kinematic approach Limit Analysis theory (KLA). first draw cross-sections containing major shallow décollement level in T...

isolated by enzymatic digestion with a progressive increase of the [free Ca z+ ] in the solution. These cells were electrically stimulated in the presence of 2.50 m M free Ca 2+, and a twitch of maximum ampli tude was elicited by the positive inotropic interventions that were found to be optimum. Then the cells were chemically skinned, and the maximum tension induced by a saturating [free Ca 2+...

Intact cardiac cells from the adult rat or rabbit ventricle were isolated by enzymatic digestion with a progressive increase of the [free Ca2+] in the solution. These cells were electrically stimulated in the presence of 2.50 mM free Ca2+, and a twitch of maximum amplitude was elicited by the positive inotropic interventions that were found to be optimum. Then the cells were chemically skinned,...

Removing the solid skin of polymer foams is a challenging approach for supercritical carbon dioxide (scCO2) foaming. Herein, surface-constrained foaming method was used to fabricate skinless cellular poly (vinylidene fluoride) (PVDF) films. The use organosilicone and nature latex as gas barrier layers resulted in low CO2 diffusion rates 2.16 × 10−11 m2/s 4.73 10−13 m2/s, trigger heterogeneous n...