Membrane technology is growing very fast and it is used in several main applications from desalination, water and wastewater treatment to medical, biotechnology and gas separation field. Different membrane processes are applied depending on the applications from more traditional pressure-driven membrane processes (Microfiltration, MF; Ultrafiltration, UF; Nanofiltration, NF) to more advanced on...

The objective of this paper is to present a simple sensor based on Faraday’s Law together with an integration and amplifying stage and used for measuring fast current pulses. Its behavior in time and frequency is tested by measuring Partial Discharges (PD) in electric insulation systems following the guidelines given in the standard IEC 60270. The measurements are also taken with two other sens...

The camera placement problem concerns the placement of a xed number of point-cameras on the integer lattice of d-tuples of integers in order to maximize their visibility. We give a caracterization of optimal conng-urations of size s less than 5 d and use it to compute in time O(s log s) an optimal abstract connguration under the assumption that the visibility of a connguration is computable in ...

We present here two non-commutative situations where dynamical entropy estimates are possible. The first result is concerned with automorphisms of cross-products by an exact group that commute with the group action and generalizes the result known for amenable group. The second is about continuous fields of C∗-algebras and C(X)automorphisms and shows that one need more than the knowledge of ent...

In the following note we characterize the category of Mackey-functors from a category ~, satisfying a few assumptions, to a category ~ as the category of functors from Sp(~), the category of "spans" in ~, to ~ which preserve finite products. This caracterization permits to apply all results on categories of functors preserving a given class of limits to the case of Mackey-functors. We recall (c...