E-Tex

In scale-up calculations. Equation 4 requires knowledge of the product of mean extract loading (mg/ms) and specific solvent mass flow (mg/mp) and their mutual dependence. When the extraction efficiency E/Tex is plotted qualitatively against the specific solvent mass flow (liis/mo), the decrease in extract loading with increasing ihg/mo must yield an optimum specific solvent mass flow, cf. Figure 4 above (5). If a scale-up were to be made on the basis of such an optimised extraction curve. Equation 2 with equal solvent mass flow... 

Figure 4. Optimization and scale-up for SCF extraction of solid material. Extract loading (m /mg) (above) and extraction efficiency E/Tex (mE/moJ/tEx (below) as function of specific solvent mass flow (mg/mo).

The health care industry is capitalizing on new medical technologies based on loT that will both dramatically improve care and lower costs. There is a dramatic growth in medical devices that use wireless technologies, some implanted and some worn on the body, to control bodily functions and to measure an array of physiological parameters. For example, implanted devices with biosensors and actuators can control heart rhythms, monitor hypertension, provide functional electrical stimulation of nerves, operate as glaucoma sensors, and monitor bladder and cranial pressure [3]. Electronic textiles (E-Tex)-based WBSNs for noninvasive health care monitoring will be the most... 

The body sensor network (BSN) systems imbedded in E-Tex can provide health care services such as medical monitoring of physiological signals and ambulatory communication. This WBSN application is growing rapidly. Currently, noninvasive WBSN with multiple types of body sensors are deployed to collect and communicate a wearer s health stams anytime and anywhere as demonstrated by Sotera s Visi Mobile (Fig. 9.2). 

Biomedical sensors imbedded in a WBSN may need to be modified to accommodate the user comfort and rehability. In addition the integrated fabric sensors should be small in size, flexible, and adaptable to E-Tex connectivity. 

Pulse oximetry can be integrated into wearable sfructure with woven or embroidered POF textile structures such as a glove or patch for a LED/photodiode sensor together with microcontroller connection. The blood oxygen saturafion (Sa02) data can be interfaced to the WBSN and transferred to the data sink in medical offices for further interpretation and timely intervention. Textile biosensors considered above for WBSN based on E-Tex are summarized in Table 9.2. These textile sensors are flexible and provide good connectivity for integration of E-Tex and body sensor networks. 

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