Early detection devices

Early Detection Devices Deployed for the Protection of Civilian... 

There are various innovations that the fire science community can produce to reduce human losses. These include less flammable materials, early and accurate fire detection devices, and reliable suppression systems. Each of these approaches assists in keeping the fire from becoming large, an important factor since most fatalities in the United States occur some distance away from the room of fire origin from smoke generated from large fires (5). 

Useful applications have been found lor the varied effects of these crystal changes. One of the first came from the properly of selectively reflecting visible light because this is lempcraiurv-dependent. the property can be used as a temperature detector, and in gel lurm liquid crystals have been used lor the early detection of those cancers which cause hot spots in the body. Applications of the smectic modifications arise from their ferroelectric properties this phase can function as a fast-switching light-valve device with memory. This kind of application requires some... 

Senturia, S. D. "Fabrication and Evaluation of Polymer Early-Warning Fire Detection Devices" NASA Qt-134764 (Contract NAS 3-17534) NTIS Springfield, VA, 1975. 

I he detectors for early spectroscopic instruments were the human eye or a photographic plate or him. rraiis-ducers that ctmvcrl radiant energy into an electrical signal have almost totally replaced these detection devices. We will confine our discussion to modern transducers. 

Different electronic devices allow early detection and early notice to authorities. A series of successive physical barriers (including fences) are designed to delay any intrusion. 

WEARABLE MICROWAVE RADIOMETRY DEVICE FOR EARLY DETECTION OF SUB-USSDE ONCOLOGICAL IMPERFECTIONS... 

Development of a wearable, self-powered early warning system for breast cancer will require the production of textile structures that are flexible, comfortable, breathable, ligbt, and suitable for integration with the materials developed to perform various functions to operate the cancer detecting devices produced. 

The use of a direct event for indication of analyte presence and concentration allow this detection technique to be used in real time. This, together with the broad nature of the detection protocols, makes the sensor system ideally suited for application as an early warning device. The surfaces can be used for repeated assays throughout their frmctional lifetimes and are exceptionally sensitive, with limits of detection for organophosphorus compounds below the current safe drinking water standards (75, 14, 17, 18, 44). In addition to detection of a variety of analytes in solution (70, 12-18), these enzyme based surfaces have been applied to the detection of GB vapor as well as gaseous carbon dioxide 16, 18). 

Methods for individual channel monitoring do not yet seem to be cost-effective. However, new methods for large-scale self-assembly of electronic components seem to offer an approach that may make individual channel monitoring possible at an affordable cost. The assumption is that early detection of device performance changes should allow more precise control of product quality. 

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