Nonlinear properties of two different crude oils from west-south Iran reservoirs have been investigated using the single beam Z-scan technique. The nonlinear refractive indices of the samples were measured by use of d...Nonlinear properties of two different crude oils from west-south Iran reservoirs have been investigated using the single beam Z-scan technique. The nonlinear refractive indices of the samples were measured by use of diode laser in the CW regime and at the wavelength 660 nm. The experiment results showed that the samples have large and negative refractive index nonlinear refraction coefficient. These results showed that the crude oil has significant nonlinear properties and it could be a candidate for photonic and nonlinear optical devices and also this information can be used in petroleum science and oceanology and etc.展开更多
[目的]探讨改良Z-Track肌内注射法在体外受精-胚胎移植(IVF-ET)病人黄体酮注射中的应用效果。[方法]采用前瞻性随机对照研究方法,将纳入研究的122例IVF-ET病人按照随机数字表法分为观察组和对照组各61例。对照组采用常规肌内注射法,观...[目的]探讨改良Z-Track肌内注射法在体外受精-胚胎移植(IVF-ET)病人黄体酮注射中的应用效果。[方法]采用前瞻性随机对照研究方法,将纳入研究的122例IVF-ET病人按照随机数字表法分为观察组和对照组各61例。对照组采用常规肌内注射法,观察组根据病人不同体质指数,采用改良Z-Track肌内注射法。比较两组给药7 d内注射部位不良反应发生情况。[结果]观察组局部硬结发生率显著低于对照组,组间比较差异有统计学意义(χ 2=6.917, P <0.05);观察组疼痛程度显著低于对照组,组间比较差异有统计学意义( Z =6.622, P <0.05)。[结论]根据病人不同体质指数,采用改良Z-Track肌内注射法进行黄体酮臀部肌内注射,可有效减少局部不良反应,确保用药安全。展开更多
The changes in the nonlinear refractive of Bradford reagent caused by its binding to bovine serum albumin (BSA) were investigated in aqueous solutions. The nonlinear refractive index at the wavelength of 514 nm was me...The changes in the nonlinear refractive of Bradford reagent caused by its binding to bovine serum albumin (BSA) were investigated in aqueous solutions. The nonlinear refractive index at the wavelength of 514 nm was measured using Z-scan Technique. The presence of BSA shows an increase of the nonlinear refractive index coefficient over Bradford reagent alone. The nonlinear refractive index the BSA was found to be linearly dependent on the concentration of the BSA. The nonlinear values n2 shows extended linearity over wide range of relatively high concentration. This extended linear range can be considered as an advantage over traditional absorption at peak value.展开更多
The nonlinear optical properties of a phosphate vitreous system [（ZnO）x-（MgO）30-x-（P2O5）70], where x=8, 10, 15, 18, and 20 mol% synthesized through the melt-quenching technique have been investigated by using th...The nonlinear optical properties of a phosphate vitreous system [（ZnO）x-（MgO）30-x-（P2O5）70], where x=8, 10, 15, 18, and 20 mol% synthesized through the melt-quenching technique have been investigated by using the Z-scan technique. In the experiment, a continuous-wave laser with a wavelength of 405 nm was utilized to determine the sign and value of the nonlinear refractive （NLR） index and the absorption coefficient with closed and opened apertures of the Z-scan setup. The NLR index was found to increase with the ZnO concentration in the glass samples by an order of 10-10 cm2·W-1. The real and imaginary parts of the third-order nonlinear susceptibility were calculated by referring to the NLR index （n2） and absorption coefficient （β） of the samples. The value of the third-order nonlinear susceptibility was presented by nonlinear refractive or absorptive behavior of phosphate glasses for proper utilization in nonlinear optical devices. Based on the measurement, the positive sign of the NLR index shows a self-focusing phenomenon. The figures of merit for each sample were calculated to judge the potential of phosphate glasses for application in optical switching.展开更多
Z-scan technique is an effective tool for measuring the optical nonlinearity of the materials. By using this technique the measurement was made for total protein and albumin. The nonlinear refractive index of the tota...Z-scan technique is an effective tool for measuring the optical nonlinearity of the materials. By using this technique the measurement was made for total protein and albumin. The nonlinear refractive index of the total protein and albumin were found to vary linearly with concentration. Hence by calculating the nonlinear refractive index it is possible to measure their concentration in the sample. The values measured thus are found in equivalence with conventional colorimetric method.展开更多
文摘Nonlinear properties of two different crude oils from west-south Iran reservoirs have been investigated using the single beam Z-scan technique. The nonlinear refractive indices of the samples were measured by use of diode laser in the CW regime and at the wavelength 660 nm. The experiment results showed that the samples have large and negative refractive index nonlinear refraction coefficient. These results showed that the crude oil has significant nonlinear properties and it could be a candidate for photonic and nonlinear optical devices and also this information can be used in petroleum science and oceanology and etc.
文摘[目的]探讨改良Z-Track肌内注射法在体外受精-胚胎移植(IVF-ET)病人黄体酮注射中的应用效果。[方法]采用前瞻性随机对照研究方法,将纳入研究的122例IVF-ET病人按照随机数字表法分为观察组和对照组各61例。对照组采用常规肌内注射法,观察组根据病人不同体质指数,采用改良Z-Track肌内注射法。比较两组给药7 d内注射部位不良反应发生情况。[结果]观察组局部硬结发生率显著低于对照组,组间比较差异有统计学意义(χ 2=6.917, P <0.05);观察组疼痛程度显著低于对照组,组间比较差异有统计学意义( Z =6.622, P <0.05)。[结论]根据病人不同体质指数,采用改良Z-Track肌内注射法进行黄体酮臀部肌内注射,可有效减少局部不良反应,确保用药安全。
文摘The changes in the nonlinear refractive of Bradford reagent caused by its binding to bovine serum albumin (BSA) were investigated in aqueous solutions. The nonlinear refractive index at the wavelength of 514 nm was measured using Z-scan Technique. The presence of BSA shows an increase of the nonlinear refractive index coefficient over Bradford reagent alone. The nonlinear refractive index the BSA was found to be linearly dependent on the concentration of the BSA. The nonlinear values n2 shows extended linearity over wide range of relatively high concentration. This extended linear range can be considered as an advantage over traditional absorption at peak value.
基金Project supported by the Ministry of Higher Education(Grant Nos.1-11-08-664FR/F1 and 01-0410-861FR)
文摘The nonlinear optical properties of a phosphate vitreous system [（ZnO）x-（MgO）30-x-（P2O5）70], where x=8, 10, 15, 18, and 20 mol% synthesized through the melt-quenching technique have been investigated by using the Z-scan technique. In the experiment, a continuous-wave laser with a wavelength of 405 nm was utilized to determine the sign and value of the nonlinear refractive （NLR） index and the absorption coefficient with closed and opened apertures of the Z-scan setup. The NLR index was found to increase with the ZnO concentration in the glass samples by an order of 10-10 cm2·W-1. The real and imaginary parts of the third-order nonlinear susceptibility were calculated by referring to the NLR index （n2） and absorption coefficient （β） of the samples. The value of the third-order nonlinear susceptibility was presented by nonlinear refractive or absorptive behavior of phosphate glasses for proper utilization in nonlinear optical devices. Based on the measurement, the positive sign of the NLR index shows a self-focusing phenomenon. The figures of merit for each sample were calculated to judge the potential of phosphate glasses for application in optical switching.
文摘Z-scan technique is an effective tool for measuring the optical nonlinearity of the materials. By using this technique the measurement was made for total protein and albumin. The nonlinear refractive index of the total protein and albumin were found to vary linearly with concentration. Hence by calculating the nonlinear refractive index it is possible to measure their concentration in the sample. The values measured thus are found in equivalence with conventional colorimetric method.
