The Experts below are selected from a list of 647670 Experts worldwide ranked by ideXlab platform
S. E. Pryse - One of the best experts on this subject based on the ideXlab platform.
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Radio Tomography: A New Experimental Technique
Surveys in Geophysics, 2003Co-Authors: S. E. PryseAbstract:The Technique of radio tomography has developed during the past fifteen years from a theoretical concept to an established Experimental method, used for geophysical investigations ofsolar-terrestrial processes. It also has potential in the mapping and modelling of the ionised atmosphere for application to practical radio systems. The method involves measurement of the electron content of the ionosphere along a large number of intersecting satellite-to-receiver ray paths, with tomographic inversion of the data to give a two-dimensional image of the spatial distribution of plasma density in the region of ray-path intersection. The emphasis in this review is on Experimental tomographic observations, which have highlighted the capabilities and potential of the Technique. Examples are presented from the equatorial sector where the equatorial anomaly is a significant feature, the mid-latitude sector where radio propagation is often influenced by the presence of the main ionisation trough, and the auroral and polar regions where footprints of solar-terrestrial coupling processes are frequently to be seen.
José M. Asua - One of the best experts on this subject based on the ideXlab platform.
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Novel Experimental Technique for the Determination of Monomer Droplet Size Distribution in Miniemulsion
Macromolecular Rapid Communications, 2005Co-Authors: Marcelo Do Amaral, Agnès Bogner, Catherine Gauthier, Gilbert Thollet, Pierre-henri Jouneau, Jean-yves Cavaille, José M. AsuaAbstract:The lack of accurate knowledge for measuring monomer droplet size and droplet size distribution has hampered the further progress of miniemulsion polymerization. Monomer droplet size is probably the most important characteristics of a miniemulsion, influencing the miniemulsion stability and the nucleation mechanism. To date, several Experimental Techniques have been tested to measure miniemulsion droplet size, but none are convenient and accurate. This work presents a novel Experimental Technique, using a powerful new scanning transmission electron microscopy (STEM) imaging system, which allows transmission observations of wet samples in an environmental scanning electron microscopy (ESEM). This new imaging Technique is a useful Technique to directly measure droplet size and droplet size distribution.
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Novel Experimental Technique for the determination of monomer droplet size distribution in minielmulsion
Macromolecules, 2005Co-Authors: M. Amaral, Catherine Gauthier, Gilbert Thollet, Pierre-henri Jouneau, Jean-yves Cavaille, Agnès Bogner-van De Moortele, José M. AsuaAbstract:The lack of accurate knowledge for measuring monomer droplet size and droplet size distribution has hampered, the further progress of miniemulsion polymerization. Monomer droplet size is probably the most important characteristics of a miniemulsion, influencing the miniemulsion stability and die nucleation mechanism. To date, several Experimental Techniques have been tested to measure miniemulsion droplet size, but none are convenient and accurate. This work presents a novel Experimental Technique, using a powerful new scanning transmission electron microscopy (STEM) imaging system, which allows transmission observations of wet samples in an environmental scanning electron microscopy (ESEM). This flew imaging Technique is a useful Technique to directly measure droplet size and droplet size distribution.
Hisataka Tanaka - One of the best experts on this subject based on the ideXlab platform.
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an Experimental Technique for the measurement of temperature on cbn tool face in end milling
International Journal of Machine Tools & Manufacture, 2007Co-Authors: Masahiko Sato, Takashi Ueda, Hisataka TanakaAbstract:Abstract An infrared radiation pyrometer with two optical fibers connected by a fiber coupler was developed and applied to the measurement of tool–chip interface temperature in end milling with a binderless CBN tool. The infrared rays radiated from the tool–chip interface and transmitted through the binderless CBN are accepted by the optical fiber inserted in the tool and are then sent to the pyrometer. A combination of the two fibers and the fiber coupler makes it possible to transmit the accepted rays to the pyrometer, which is set up outside of the machine tool. This method is very practical in end milling for measuring the temperature history at tool–chip interface during chip formation. The maximum tool–chip interface temperature in up milling of a 0.55% carbon steel is 480 °C when the cutting speed is 2.2 m/s and 560 °C at 4.4 m/s, and in the down milling, 500 °C at 2.2 m/s and 600 °C at 4.4 m/s.
Guan Chen - One of the best experts on this subject based on the ideXlab platform.
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Dynamic Characteristics of Liquid CO2 Phase Change Fracturing, Using Experimental Technique
Geotechnical and Geological Engineering, 2019Co-Authors: Qiyue Li, Dayou Luo, Haipeng Ma, Xin’ao Wei, Guowei Feng, Guan ChenAbstract:The study of the shock pressure is the premise to analyze the rock disintegration mechanism of liquid CO2 phase change fracturing. In order to obtain the phase-changing shock pressure, the relative dynamic signals are detected. These signals include both dynamic strain and stress: the strain is about the dynamic response of the liquid CO2 storage tube, while the stress refers to the phase-changing shock pressure. These signals are obtained by a series of dynamic tests. In addition, the force analysis of the storage tube was conducted, and its crack propagation form was determined based on the dynamic fracturing mechanics, then the tube’s dynamic characteristics and macroscopic failure were comprehensively analyzed. Under the Experimental conditions in this paper, the failure mechanism of the storage tube was obtained as follows: the failure of the storage tube undergoes three states: elastic deformation, plastic deformation, and full plastic limit state; the strain response and fracturing of the tube are inhomogeneous: showing 5 distinct regions. Moreover, the phase-changing shock stress distributes unevenly; similar but opposite to the tube fracturing, namely, the stress value is larger in the ends than the middle, while the middle part of the tube is damaged most seriously.
Mikio Takano - One of the best experts on this subject based on the ideXlab platform.
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characterization of electrode electrolyte interface for lithium batteries using in situ synchrotron x ray reflectometry a new Experimental Technique for licoo2 model electrode
Journal of Power Sources, 2007Co-Authors: Masaaki Hirayama, Noriyuki Sonoyama, Takeshi Abe, Machiko Minoura, Masumi Ito, Daisuke Mori, Atsuo Yamada, Ryoji Kanno, T Terashima, Mikio TakanoAbstract:Abstract A new Experimental Technique was developed for detecting structure changes at electrode/electrolyte interface of lithium cell using X-ray reflectometry and two-dimensional model electrodes with a restricted lattice-plane. The electrodes were constructed with an epitaxial film of LiCoO2 synthesized by pulsed laser deposition method. The orientation of the epitaxial film depends on the substrate plane; the 2D layer of LiCoO2 is parallel to the SrTiO3 (1 1 1) substrate ( ( 0 0 3 ) LiCo O 2 / / ( 1 1 1 ) SrTi O 3 ) , while the 2D layer is perpendicular to the SrTiO3 (1 1 0) substrate ( ( 1 1 0 ) LiCo O 2 / / ( 1 1 0 ) SrTi O 3 ) . The anisotropic properties were confirmed by electrochemical measurements. Ex situ X-ray reflectivity measurements indicated that the impurity layer existed on the as-grown LiCoO2 was dissolved and a new SEI layer with lower density was formed after soaking into the electrolyte. In situ X-ray reflectivity measurements indicated that the surface roughness of the intercalation (1 1 0) plane increased with applying voltages, while no significant changes in surface morphology were observed for the intercalation non-active (0 0 3) plane during the pristine stage of the charge–discharge process.
