Add Control: plant virtualization for control solutions in WWTP.

This paper summarizes part of the research work carried out in the Add Control project, which proposes an extension of the wastewater treatment plant (WWTP) models and modelling architectures used in traditional WWTP simulation tools, addressing, in addition to the classical mass transformations (transport, physico-chemical phenomena, biological reactions), all the instrumentation, actuation and automation & control components (sensors, actuators, controllers), considering their real behaviour (signal delays, noise, failures and power consumption of actuators). Its ultimate objective is to allow a rapid transition from the simulation of the control strategy to its implementation at full-scale plants. Thus, this paper presents the application of the Add Control simulation platform for the design and implementation of new control strategies at the WWTP of Mekolalde.

Lymphoid cells of the liver.

Lymphoid cells resident in the liver possess a considerable importance for maintaining the homeostasis in this organ, under conditions for both normal development and response to certain pathological stimuli. This review analyze various fundamental aspects of their physiology, discussing: the types of lymphocytes (granular and agranular) found in the liver and their distribution patterns in the tissue, under both normal and pathological circumstances; the functional characteristics of these cells in vitro; and the factors that control the dynamics of their location in the liver in vivo.

[Breast feeding].

The research that was carried out with comparative groups showed the influence of the work done by a coordinated health group on the prolonged natural lactation. This experience has proved the evident reduction of percentages of malnutrition and diarrhoea in children under 6 months of age.