Spectra cable

Composed of ultra-high-molecular-weight polyethylene fibers. Spectra cable is another option that is available to body-powered prosthesis designers and users. Spectra cable is now widely used at almost all major upper-limb fitting... 

Optical emision spectra nowadays are simply measured using a fiber optic cable that directs the plasma light to a monochromator, which is coupled to a photodetector. By rotating the prism in the monochromator a wavelength scan of the emitted light can be obtained. Alternatively, an optical multichannel analyzer can be used to record (parts of) an emission spectrum simultaneously, allowing for much faster acquisition. A spectrometer resolution of about 0.1 nm is needed to identify species. 

Successful combination of a chromatographic procedure for separating and isolating additive components with an on-line method for obtaining the IR spectrum enables detailed compositional and structural information to be obtained in a relatively short time frame, as shown in the case of additives in PP [501], and of a plasticiser (DEHP) and an aromatic phenyl phosphate flame retardant in a PVC fabric [502], RPLC-TSP-FTIR with diffuse reflectance detection has been used for dye analysis [512], The HPLC-separated components were deposited as a series of concentrated spots on a moving tape. HPLC-TSP-FTIR has analysed polystyrene samples [513,514], The LC Transform has also been employed for the identification of a stain in carpet yarn [515] and a contaminant in a multiwire cable [516], HPLC-FTIR can be used to maintain consistency of raw materials or to characterise a performance difference. 

Fig. 3.26. The Holdcroft-Plesch observation vessel to find the conductivity and the UV spectrum of a solution (a) plan, (b) elevation. A mixing vessel also serving as conductivity cell, and burettes, Q, Q, Q PTFE taps, D Pt wire electrodes fastened together by a lead-glass bead, E terminals from screened cables leading to D, F graded-seal soda glass-Pyrex, G cone for connection to vacuum and supply lines, 1 cm and 0.1 cm quartz cells.

The characteristic feature of all Amplatzer devices is the nitinol wire mesh. There are two possible methods of implantation. Either the device is placed entirely into the appendage or the distal disc is expanded in the neck and the proximal disc in the left atrium. The risk of residual shunting around the device is increased when it is totally inserted into the LAA with no part protruding into the atrium. The Amplatzer occluder series holds the widest spectrum of device sizes (4 to 40 mm), The device is attached to a delivery cable and can simply be opened or recollapsed into the delivery catheter. Release is by unscrewing the device after first testing stability with simple traction. 

Figure 3.40 shows the layout of a typical Raman analyzer that uses fiber optics for process application. In a Raman process system, light is filtered and delivered to the sample via excitation fiber. Raman-scattered light is collected by collection fibers in the fiber-optic probe, filtered, and sent to the spectrometer via return fiber-optical cables. A charge-coupled device (CCD) camera detects the signal and provides the Raman spectrum. To take advantage of low-noise CCD cameras and to minimize fluorescence interference, NIR diode lasers are used in process instruments. 

A small weather station is illustrated in Figure 3.181. Such stations are usually available in both the cabled and the wireless forms to provide all the information that is needed to control and optimize the various alternative energy processes. These units are usually preprogrammed to provide simple meteorological data, and to perform the complex calculation of ETo (evapo-transpiration). The microprocessor-based systems automatically measure the variables and store the data before transmitting it to a user-supplied remote PC over distances of up to about 10 mi. The units are usually provided with a rechargeable battery pack and a spread spectrum radio transceiver. 

One of the most fascinating cabling technologies today—and, actually, it s one that doesn t really use cable—is wireless. Wireless networks offer the ability to extend a LAN without the use of traditional cabling methods. Wireless transmissions are made through the air by infrared light, laser light, narrow-band radio, microwave, or spread-spectrum radio. 

With metallocenes and methylalumoxane or other compounds, ethylene/ 1-octene copolymers can be synthesized under solution polymerization process conditions [31]. A wide spectrum of high-performance products are available, as described elsewhere [69]. These tailor-made products are used for sealant applications (blown film), injection molding and flexible insulation (wire and cable). 

The MonARC FTIR system from Mettler Toledo identifies and quantifies chemical species based on changes in the fingerprint region of their IR spectrum. It also has a built-in ultrasonic cleaner for the diamond sensor which increases reproducibility and reduces downtime. Various types of fibre optic cable and probe heads are available depending on... 

The whole spectrum of the different extrusion processes is used to form blends, i.e., production of profiles, sheets, tubes, wire and cable coating. The products find use in diverse industries electrical, appliances, automotive, etc. 

The MMW region of the electromagnetic spectrum is characterised by quasi-optical electronic components for generation, transmission and detection. MMW sources and detectors are typically semiconductor devices with transmission lines of open tube rectangular waveguide, or coaxial cable at frequencies below 30 GHz. The cables are rather lossy and waveguide is the favoured transmission line for any other than the shortest links or where dielectric loss is less critical than mechanical flexibility, e.g. connecting to a frequency counter. 

---