The charge transport parameter φμτ of the photorefractive crystal barium strontium titanate (Ba1-x Srx TiO3, BST) has been measured by means of two-beam coupling technique. The photorefractive response time for an intensity of 1 W/cm2at 515 nm has been determined to be 0. 5s.
Through the application of the latest artificial coupling techniques to water quality monitoring, which was favorable to realize automatization, informatization, and internet - based, new dependable technical support was offered to the subject establishment of environmental engineering.
Mainly discusses how to survey electromagnetic disturbance,and introduces some ways to curb thedisturbance, such as shield, ground connection, floating, filtering and photoelectrical coupling techniques.
The coupling techniques of Artificial Neural network (ANN) and Geography Information systems (GIS) are used to illustrate impacts of the related factors on water irruption accidents. One floor water irruption model which can reflect actions of more factors has been built. And Risk assessment of floor water irruption in coal mines of North China has been analyzed and evaluated.
The nanosized Cr 2O 3 was prepared by sol gel coupling with azeotropic distillation method. The size distribution of the nanosized Cr 2O 3, statistically determined by TEM, was narrowly ranging from 20 to 40 nm. The nanosized composite catalysts Cr 2O 3/Al 2O 3, Cr 2O 3/ZrO 2 and Cr 2O 3/MgO were prepared by coprecipitation coupling with azeotropic distillation method.
Taking the finite element software ANSYS8.0 as a tool, this paper makes a finite element analysis of telescopic arm structures of TR1000 jack drill,exerts the technology of coupling the degree of freedom of nodes to simulate the connection between every arm.
A new method for measuring the intensity spectrum of a light beam is proposed, which is based on monitoring the angular dependence of the reflected radiation power in a thin-film structure by prism coupling technique.
The refractive index and the mode propagation losses at 633 nm were measured using the prism coupling technique and improved photographic technique respectively.
This includes, in particular, the demand for appropriate coupling techniques between LES and RANS, adaptive control mechanisms, and proper subgrid-scale and RANS models.
Motivated by a simple probabilistic model for the radioactive decay, we show thatSerfling's [1978] approach to Poisson approximation using coupling techniques can in a natural way also be applied to Poisson process approximation.
Direct coupling techniques in speciation analysis lead to reproducible results with lower risks of trace contamination or losses of analytes in a shorter period of time.
This work presents the benefits of coupling techniques such as Electro Thermal Vaporisation (ETV)-ICP-MS and Ion Chromatography (IC)-ICP-(AES, MS) for ultra trace analysis in a high purity rhenium powder sample.