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https://www.selleckchem.com/products/CP-690550.html 1\% $deviation=39.1%). Good correlations ($ r = 0.98 - 0.99$r=0.98-0.99) were observed between Ca, K, Mg, and Na LIBS peak areas determined using the cellulose filter and their mass concentrations (ppm) measured by ICP-OES for aqueous solutions. The limits of detection for Ca, K, Mg, and Na by LIBS were 122 ppm, 68 ppm, 36 ppm, and 142 ppm, respectively. Both the LIBS and ICP-OES data showed that element concentrations in the flowback water samples were in the order of Na, Ca, Mg, and K from highest to lowest. Our data suggest that the LIBS technique could rapidly detect elements in flowback water samples on site. However, accurate quantification of elements present in low concentrations in water samples is limited.We report the recording of optical gratings on photorefractive $ \rm Bi_2\rm TeO_5 $Bi2TeO5 crystals using $ \lambda = 532\,\,\rm nm $λ=532nm wavelength light. We studied the behavior of this material under high light intensity and found the presence of fast and slow gratings, both of photorefractive nature and exhibiting quite significant light intensity dependence for the $ 1 - 13\,\,\rm kW/\rm m^2 $1-13kW/m2 range. A permanent grating was found after the complete erasure of fast and slow holograms recorded at room temperature. The experimental results show that the diffraction efficiency of the permanent grating increases with the recorded light intensity. The permanent grating performance as an optical Bragg filter was characterized by measuring the angular selectivity approximately 1.0 mrad. We also show that the diffraction efficiency of the permanent grating is quite dependent on the direction of light polarization.A feasibility study of coherent differential absorption lidar is conducted using a 1.53-µm wavelength for simultaneously retrieving the water vapor density and wind speed profiles. We selected the ON and OFF wavelengths to be 1531.383 and 1531.555 nm, respectively, for minimizing the ef

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