background several methods for assessment of severity of pain have been proposed but all of them are subjective. objectives this study evaluated the association concerning changes in electrical resistance (er) between two acupuncture points and severity of postoperative pain in order to define an objective measurement of pain. patients and methods in a cross-sectional study, 50 patients undergo...

Also, the power-handling capacity of a transmission line is maximum when it is "flat", i.e., operating at low SWR. Lastly, it is important to be able to interconnect a number of different components into a system, and the only way that can be done reliably and predictably is by constraining the reflection coefficients of the various interfaces through impedance matching. Multiple reflections ca...

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 aim : this study was designed to investigate about findings of impedance ph-monitoring in patients with atypical symptoms of gerd. background : the routine treatment with proton pump inhibitors is not very effective in patients with atypical symptoms of gastro-esophageal reflux disease (gerd). it may be due to non-acid ref...

Impedance spectroscopy has long been recognized as one of the major techniques for the characterization of ac transport in materials. The primary limitation of this technique is the lack of spatial resolution that precludes the equivalent circuit elements from being unambiguously associated with individual microstructural features. Here we present a scanning probe microscopy technique for quant...

reservoir characterization plays an important role in different parts of an industrial project. the results from a reservoir characterization study give insight into rock and fluid properties which can optimize the choice of drilling locations and reduce risk and uncertainty. delineating hydrocarbon bearing zones within a reservoir is the main objective of any seismic reservoir characterization...

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in classical mechanics, considering hook’s law stress is a linear function of strain. while in strain gradient theory stress is a function of strain and strain differentials. in this paper, novel formulation relating stress and strain and also new boundary conditions are derived based on minimum potential energy principle. in strain gradient theory a length coefficient parameter is defined. thi...