Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Dingchang, Xian"'
Autor:
Kurash, Ibrahim *, Fengqin, Liu, Haijie, Qian, Lin, Guo, Dingchang, Xian, Guangcheng, Xiong, Sicheng, Wu
Publikováno v:
In Materials Science & Engineering B 2000 76(1):14-17
Autor:
Yuhui Dong, Dingchang Xian, Erik Brostromer, Yu-He Liang, Jie Nan, Peng Liu, Xiao-Dong Su, Lan-Fen Li
Publikováno v:
Acta Crystallographica Section D Biological Crystallography. 62:843-851
A large-scale, high-efficiency and low-cost platform based on a Beckman Coulter Biomek FX and custom-made automation systems for structural genomics has been set up at Peking University, Beijing, People's Republic of China. This platform has the capa
Autor:
Dingchang Xian, Koichi Mori, Kazuyuki Hyodo, Yoshihisa Tanaka, Xiao W. Zhang, Wanwisa Pattanasiriwisawa, Joseph B. Roberson, Masami Ando, Anton Maksimenko, Edward Rubenstein, Hiroshi Sugiyama, Jy Chen
Publikováno v:
Japanese Journal of Applied Physics. 41:4742-4749
We report an X-ray optical system 'Owl', capable of dark-field imaging. It comprises a Bragg case asymmetric monochromator and a monolithic X-ray optics housing a collimator C and an analyzer A that can select only the refracted light by 4,4,0 diffra
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. :748-751
The 4W1B is a X-ray monochromator beamline for XAFS at BSRF. During the upgrading phase, we have redesigned the monochromator to improve the performance of the beamline. It is a goniometer based, fixed exit double crystal monochromator. A mechanical
Publikováno v:
Materials Science and Engineering: B. 76:26-30
In this paper the change of intensity and binding energy (BE) of O Is in the Pr1-xSrxMnO3 system along with the doping amount x is discussed. The X-ray photoelectron spectra of O Is peak show the clear splitting features and change of both intensity
Publikováno v:
Applied Physics A: Materials Science & Processing. 70:203-209
We investigated the YAG laser-generated ultrasonic wave in a solid with an array of rectilinear sources in the melting regime. By adapting the melting rectilinear sources, a 31.2 gain factor of amplitude of the excited ultrasound can be obtained for
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 129:543-547
The performance of the 4W1C beamline and the diffuse scattering station at the Beijing Synchrotron Radiation Facility (BSRF) is described. Some of the experimental research carried out at the station on the structure of various materials is reported.
Publikováno v:
Physics Letters A. 221:124-133
Described is a scheme of successive approximations used to compute a critical point. An order parameter J is introduced automatically in the cumulant expansion. The critical temperature Tc is determined by the singular point of the curve of J versus
Autor:
Yuying Huang, Dingchang Xian
Publikováno v:
Journal de Physique III. 6:597-601
The photoacoustic frequency spectrums of nanocrystalline Ag and Al 2 O 3 versus the grain size and the annealing temperature respectively were investigated by using synchrotron radiation X-ray photoacoustic experiments.
Publikováno v:
The Journal of the Acoustical Society of America. 99:2469-2500
The velocity and attenuation of an ultrasonic longitudinal wave for nano‐scaled copper are determined by a laser ultrasonic technique. The nano‐scaled copper samples are composed of super fine particles 10‐nm in size, and are prepared by a supp