نتایج جستجو برای: situ saturation monitoring
تعداد نتایج: 471220 فیلتر نتایج به سال:
Aiming toward process control of industrial high yield / high volume CVD reactors, the potential of optical sensors as a monitoring tool has been explored. The sensors selected are based on both Fourier transform infrared spectroscopy (FTIR) and tunable diode laser spectroscopy (NIR-DLS). The former has the advantage of wide spectral capability, and well established data bases. NIR-DLS spectros...
Mixed venous oxygen saturation (SvO2) is a physiologic parameter reflecting cardiac output (CO) and tissue oxygen utilization. An implantable oxygen sensor incorporated in a right ventricular pacing lead has been developed to assess the feasibility of ambulatory monitoring of SvO2 to predict cardiorespiratory parameters. Eight patients with a mean age of 62 +/- 2 years and sinoatrial disease re...
Evaluation of transcutaneous carbon dioxide and saturation monitoring during fiberoptic bronchoscopy
Seismic coda-wave analysis is a well-developed method for detecting subtle physical changes in complex media by measuring arrival times the late-arriving energy from multiply scattered or reflected waves. However, challenge arises when waves are not sufficiently separated time direct arrivals to provide clear coda wave train. Additional complications monitoring fracture systems arise signals or...
Monitoring the rock-physics properties of subsurface is great importance for reservoir management. For either oil and gas applications or CO2 storage, seismic data are a valuable source information tracking changes in elastic which can be related to fluids saturation pressure within reservoir. Changes estimated with time-lapse full-waveform inversion. properties, such as saturation, inversion u...
Several examples of laser in situ monitoring of combustion processes are presented. Using a frequency modulated (13)CO(2) waveguide laser, in situ concentrations of NH(3) down to 1 ppm were measured at temperatures up to 600 degrees C in waste incinerators and power or chemical plants. Following ignition of CH(3)OH-O(2) mixtures by a TEA CO(2) laser, gas temperature profiles were measured using...
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