commercial detergents, in spite of their various names and marks, are used to remove foreign matter (dirt) from substrate. following removal of dirt from the surface, it is necessary to prevent redeposition, so the detergent must have supending power. in this experimental work, a simple method has been developed to evaluate the cleaning power of commercial detergents. the method, showing the ch...

MARCELO A. COLOMINAS∗,‡, GASTÓN SCHLOTTHAUER∗,§, MARÍA E. TORRES∗,¶ and PATRICK FLANDRIN†,‖ ∗CONICET – Laboratorio de Señales y Dinámicas no Lineales Facultad de Ingenieŕıa, Universidad Nacional de Entre Rı́os Ruta 11Km 10, Oro Verde, Entre Rı́os 3100, Argentina †Laboratoire de Physique (UMR 5672 CNRS ) École Normale Supérieure de Lyon 46 allée d’Italie, 69364 Lyon Cedex 07, France ‡macolominas@b...

Dengue is one of the major international public health concerns. Although progress is underway, developing a vaccine against the disease is challenging. Thus, the main approach to fight the disease is vector control. A model for the transmission of Dengue disease is presented. It consists of eight mutually exclusive compartments representing the human and vector dynamics. It also includes a con...

Article history: The Cape Verde Islands are l Received 29 May 2007 Received in revised form 2 May 2008

I introduce a stability notion, dynamic , for two‐sided matching markets where (i) opportunities arrive over time, (ii) is one‐to‐one, and (iii) irreversible. The definition addresses two conceptual issues. First, since not all agents are available to match at the same one must establish which allowed form blocking pairs. Second, exhibit of externality that present in static markets: an agent's...