This study is the micropaleontological investigation of the Chehel-Kaman Formation of Paleocene age from Kopet-Dagh basin, NE of Iran. Thirty three species of diagnostic benthic foraminifers belonging to genera?Miscel...This study is the micropaleontological investigation of the Chehel-Kaman Formation of Paleocene age from Kopet-Dagh basin, NE of Iran. Thirty three species of diagnostic benthic foraminifers belonging to genera?Miscellanea,Operculina,?Lockhartia,?Rotalia,?Akbarina,?Pseudocuvillerina,?Smoutina,Davisina,?Idalina,?Valvulina,?Laffitteina,?and?Ranikothalia?are recorded based on detailed petrographic analysis. The rocks are entirely shallow marine in rigin with biotic assemblages confirming Chehel-Kaman Limestone of the Paleocene age. The analyses of benthic foraminifers suggest that the deposition of the Paleogene sequence occurs in warm and shallow marine environments. In this paper?Ranikothalia sindensis?partial zone was reported in association withMiscellanea miscella,?M. juliettae?and?M. yvettae.展开更多
In recent years, the particle filter technique has been widely used in tracking, estimation and navigation. In this paper, the authors described several practical filters including the general practical, the extended ...In recent years, the particle filter technique has been widely used in tracking, estimation and navigation. In this paper, the authors described several practical filters including the general practical, the extended Kaman practical, and the unsented particle filters. And they explained the degeneracy problem in the practical filter protess, and introduced some solved methods. Finally they demonstrated the estimation of different particle filters in non-liner and non-Gaussian situation respectively. The result proved the unscented particle filter had the best performance.展开更多
The temperature dependence of surface en-hanced Raman scattering of the C70 molecule is reported. The Raman scattering of C70 molecules adsorbed on the sur-face of a silver mirror was measured at different tempera-tur...The temperature dependence of surface en-hanced Raman scattering of the C70 molecule is reported. The Raman scattering of C70 molecules adsorbed on the sur-face of a silver mirror was measured at different tempera-tures. The experimental results indicate that the relative in-tensities of the Raman features vary with the temperature of the sample. When the temperature decreases from room temperature to 0℃, the relative intensities of certain Raman bands decrease abruptly. If we take the strongest band 1565 cm-1 as a standard value 100, the greatest decrease ap-proaches to 43%. However, with the further decrease in the temperature these relative intensities increase and resume the value at room temperature. And such a temperature de-pendence is reversible. Our results show that the adsorption state of the C70 molecules on the silver surface around 0℃ changes greatly with the temperature, resulting in a decrease in relative intensities for some main Raman features of C70 molecule. When the temperature is lower than 0℃, the ad-sorption state changes continually and more slowly. Syn-chronously, eight new Raman features, which have not ever been reported in literature, are observed in our experiment and this enriches the basic information of the vibrational modes for C70 molecule.展开更多
文摘This study is the micropaleontological investigation of the Chehel-Kaman Formation of Paleocene age from Kopet-Dagh basin, NE of Iran. Thirty three species of diagnostic benthic foraminifers belonging to genera?Miscellanea,Operculina,?Lockhartia,?Rotalia,?Akbarina,?Pseudocuvillerina,?Smoutina,Davisina,?Idalina,?Valvulina,?Laffitteina,?and?Ranikothalia?are recorded based on detailed petrographic analysis. The rocks are entirely shallow marine in rigin with biotic assemblages confirming Chehel-Kaman Limestone of the Paleocene age. The analyses of benthic foraminifers suggest that the deposition of the Paleogene sequence occurs in warm and shallow marine environments. In this paper?Ranikothalia sindensis?partial zone was reported in association withMiscellanea miscella,?M. juliettae?and?M. yvettae.
文摘In recent years, the particle filter technique has been widely used in tracking, estimation and navigation. In this paper, the authors described several practical filters including the general practical, the extended Kaman practical, and the unsented particle filters. And they explained the degeneracy problem in the practical filter protess, and introduced some solved methods. Finally they demonstrated the estimation of different particle filters in non-liner and non-Gaussian situation respectively. The result proved the unscented particle filter had the best performance.
文摘The temperature dependence of surface en-hanced Raman scattering of the C70 molecule is reported. The Raman scattering of C70 molecules adsorbed on the sur-face of a silver mirror was measured at different tempera-tures. The experimental results indicate that the relative in-tensities of the Raman features vary with the temperature of the sample. When the temperature decreases from room temperature to 0℃, the relative intensities of certain Raman bands decrease abruptly. If we take the strongest band 1565 cm-1 as a standard value 100, the greatest decrease ap-proaches to 43%. However, with the further decrease in the temperature these relative intensities increase and resume the value at room temperature. And such a temperature de-pendence is reversible. Our results show that the adsorption state of the C70 molecules on the silver surface around 0℃ changes greatly with the temperature, resulting in a decrease in relative intensities for some main Raman features of C70 molecule. When the temperature is lower than 0℃, the ad-sorption state changes continually and more slowly. Syn-chronously, eight new Raman features, which have not ever been reported in literature, are observed in our experiment and this enriches the basic information of the vibrational modes for C70 molecule.
