BACKGROUND Basement membranes in the walls of cerebral capillaries and arteries form a major lymphatic drainage pathway for fluid and solutes from the brain. Amyloid-β (Aβ) draining from the brain is deposited in such perivascular pathways as cerebral amyloid angiopathy (CAA) in Alzheimer's disease (AD). CAA increases in severity when Aβ is removed from the brain parenchyma by immunotherapy for...

The use of reconfigurable intelligent surfaces (RISs) for optimization propagation channels is one the most promising and revolutionizing techniques improving efficiency next generation communications systems. In this article, we combine physical optics approximation theory diffraction gratings to study scattering properties finite-size metasurfaces mounted on partially reflecting walls. We con...

Plant cell enlargement is regulated by wall relaxation and yielding, which is thought to be catalyzed by elusive “wallloosening” enzymes. By employing a reconstitution approach, we found that a crude protein extract from the cell walls of growing cucumber seedlings possessed the ability to induce the extension of isolated cell walls. This activity was restricted to the growing region of the ste...

Two types of TiO 2 nano-tubular arrays were obtained by anodization of a titanium foil, in two different solutions containing fluoride ions. For the first type which has rough tube walls, impedance measurements in the dark showed the presence of a localised surface state which was related to adsorbed molecular water. Under UV illumination this adsorbed molecular water was photo-dissociated. Mor...

Plant cell enlargement is regulated by wall relaxation and yielding, which is thought to be catalyzed by elusive "wall-loosening" enzymes. By employing a reconstitution approach, we found that a crude protein extract from the cell walls of growing cucumber seedlings possessed the ability to induce the extension of isolated cell walls. This activity was restricted to the growing region of the ...

In an earlier report dealing with the chemistry of viral invasion, Barrington and Kozloff (1,2) showed that incubat,ion of various T series bacteriophages with N16-labeled Escherichiu coli B cell walls caused the release of as much as 15 per cent of the total nitrogen from the host cell walls. The characteristics of this interaction appeared to be similar to those of an enzymatic reaction, and ...

Numerical simulations of a magnetically shielded Hall effect thruster with centrally mounted cathode are performed an axisymmetric hybrid particle-in-cell/fluid code and partially validated experimental data. A full description the plasma discharge inside chamber in near plume is presented discussed, aim highlighting those features most dependent on magnetic configuration central cathode. Compa...

Diatom biosilica may offer an interesting perspective in the search for sustainable solutions meeting the high demand for heterogeneous catalysts. Diatomaceous earth (diatomite), i.e., fossilized diatoms, is already used as adsorbent and carrier material. While diatomite is abundant and inexpensive, freshly harvested and cleaned diatom cell walls have other advantages, with respect to purity an...

This paper deals with a new approach to the control of the propagation environment in indoor scenarios using intelligent walls. The intelligent wall is a conventional wall situated inside a building, but equipped with an active frequency selective surface and sensors. The intelligent wall can be designed as a self-configuring and self-optimizing autonomous part of a collaborative infrastructure...