Miguel Angel Gómez

Support making decision using Hotelling T 2 technique in an undersea natural gas storage plant

A method to support making decision in a undersea natural gas storage plant using Hotelling T2 is showed in this paper. The stationery work in this manufacture facilities during a few moths in a year involve a heavy duty service of gas diesel engines and ammonia gas plant for processing the methane gas and extract the condensate fluid of it. Then, a predictive maintenance plan is necessary to prevent a possible malfunction or shut down of the plant and avoid an operational cost increased. We are just sampling the signals from the plant when its working in optimal condition and then we will compare the next incoming data from the machinery versus the previous historical data set. An statistical process control algorithm Hotelling T2 based for monitoring the condition of gas engines and ammonia gas plant will be implemented.

COMPARISON OF TOTAL (TLV) AND PARTIAL (PLV) LIQUID VENTILATION WITH PERFLUOROCARBON (PFC). 1611

COMPARISON OF TOTAL (TLV) AND PARTIAL (PLV) LIQUID VENTILATION WITH PERFLUOROCARBON (PFC). 1611

Telediagnosis and maintenance of the ship from land, using principal component analysis to compress acquired data offshore

At sea, voice and data communications have virtually global coverage via satellite. Satellite communications are increasing the bandwidth and lowering the cost, but are still far from levels that are in earth. The Principal components analysis (PCA) is a statistical technique used for lossy or non exact compression data; is a common tool for the search of pattern of multidimensional data sets. The assertion of this study was the possibility of using the PCA theory to compress, with sufficient accuracy, the large amount of data that are collected on board, and then send them all via satellite, in a cheaper or/and faster way than traditionally. This strategy is appropriate for decision making about telediagnosis and maintenance of the ship using ground equipment. Consequently, significant savings are achieved in telecommunication costs and telecommunication times.

224 Early Increase of Nitric Oxide in A Model of Perinatal Asphyxia in Fetal Lambs

Background: Endogenous nitric oxide (NO) production increases in perinatal asphyxia and inflammatory processes. Histological lesion (necrosis and/or apoptosis) secondary to hypoxic-ischemic (H-I) injury appears in several hours after the insult but biological markers appear earlier. In our previous studies (1,2) we have observed early changes in cerebral blood flow and in O2-uptake. Aim: To study the early changes of serum NO concentration in a model of perinatal asphyxia induced by prolonged umbilical cord clamping in premature lambs.Methods: 10 preterm lambs (80–90% GE) were randomly assigned to: Control group, after Cesarean section, lambs were managed on conventional mechanical ventilation for 3 hours (n = 5); Asphyctic group, H-I injury was performed by partial cord clamping during 60 min and later, lambs were managed similar to the control group (n = 5). NO was measured in serum samples by fluorometric assay at baseline (B), immediately after H-I injury and at the end of experiment (3h). Comparation were performed by one-factor ANOVA, p<0.05.Results:: NO concentration results are summarised in table:Conclusion: In our model of perinatal asphyxia by partial occlusion of umbilical cord in premature fetal lambs, cellular injury can be assessed just at the end of H-I episode. This early change could be used to test the effects of early preventive strategies in the H-I injury. (1) Alvarez et al. Cerebral O2 uptake and blood flow of asphyxiated lambs on liquid ventilation and MgSO4. Pediatr Res 2001;50:278A. (2) Alvarez et al. Regional cerebral blood flow and O2-uptake changes in preterm lams with hypoxic-ischemic injury rescued with MgSO4. Pediatr Res 2002;51:454A. Supported by grants: FIS 01/0110–01,-02 and RESPIRA net of RITC, FIS C03/11.

A PROTOTYPE COMPUTERIZED SYSTEM FOR MEASUREMENT OF LUNG MECHANICS DURING TOTAL LIQUID VENTILATION. 91

A PROTOTYPE COMPUTERIZED SYSTEM FOR MEASUREMENT OF LUNG MECHANICS DURING TOTAL LIQUID VENTILATION. 91