Dubin-Johnson综合征(Dubin-Johnson syndrome,DJS)是一种临床表现为慢性间歇性/持续性高胆红素血症,由位于染色体10q24区的ATP结合盒C亚家族转运体2(ATP-binding cassette subfamiliy C member 2,ABCC2)基因突变,导致多耐药相关蛋白2(m...Dubin-Johnson综合征(Dubin-Johnson syndrome,DJS)是一种临床表现为慢性间歇性/持续性高胆红素血症,由位于染色体10q24区的ATP结合盒C亚家族转运体2(ATP-binding cassette subfamiliy C member 2,ABCC2)基因突变,导致多耐药相关蛋白2(multidrug resistance protein 2,MRP2)功能障碍或缺失引起的常染色体隐性遗传病[1-2],其在临床中少见且容易误诊。通过分析总结DJS病例资料,以期加强对该病的认识。展开更多
The activity of tritiated water has been standardized by two liquid scintillation counting methods:The CIEMAT/NIST method with the54Mn-standard efficiency tracing and the triple-to-double coincidence ratio(TDCR)method...The activity of tritiated water has been standardized by two liquid scintillation counting methods:The CIEMAT/NIST method with the54Mn-standard efficiency tracing and the triple-to-double coincidence ratio(TDCR)method.The samples were prepared with Ultima Gold TM AB liquid scintillation cocktail in low-potassium glass vials.In the application of the CIEMAT/NIST method,the computer program EMILIA was used to calculate the efficiency of3H and54Mn according to the KL1L2L3M atomic rearrangement model.And the detection efficiency of the TDCR counter was calculated using TDCR07 code,which makes it possible to allow for the potential asymmetry between the three photomultiplier tubes.The influence of stopping power and k B factor is discussed in the paper.When a power approach is adopted for the stopping power for electrons below 1ke V and k B is chosen to be 0.0075 cm/Me V,the relative deviation will be only 0.3%between the two methods.展开更多
In this paper, channel spatial characteristics which mainly depend on the spatial correlation are selected as the significant factors in over-the-air （OTA） testing for multiple input multiple output （MIMO） devices...In this paper, channel spatial characteristics which mainly depend on the spatial correlation are selected as the significant factors in over-the-air （OTA） testing for multiple input multiple output （MIMO） devices. The multi-probe anechoic chamber method, a promising candidate of the MIMO OTA testing methods, can reproduce the multipath environments in a controllable manner. A novel physical configuration based on the variation of relative positions of probes in a MIMO OTA setup is put forward to obtain better spatial characteristics. Two physical configurations are presented to make a comparison with the typical configuration in this paper. The simulation results show that by making a proper probe configuration, good channel simulation accuracy can be achieved. Meanwhile, in order to get better performance of emulating channel spatial characteristics, probes in the first and the last probe rings should be placed symmetrically in three dimensional （3D） physical probe configuration.展开更多
文摘Dubin-Johnson综合征(Dubin-Johnson syndrome,DJS)是一种临床表现为慢性间歇性/持续性高胆红素血症,由位于染色体10q24区的ATP结合盒C亚家族转运体2(ATP-binding cassette subfamiliy C member 2,ABCC2)基因突变,导致多耐药相关蛋白2(multidrug resistance protein 2,MRP2)功能障碍或缺失引起的常染色体隐性遗传病[1-2],其在临床中少见且容易误诊。通过分析总结DJS病例资料,以期加强对该病的认识。
基金supported by the National Natural Science Foundation of China(Grant Nos.91126002 and 11405071)the National Science and Technology Major Project of China(Grant No.2012ZX06004-005)
文摘The activity of tritiated water has been standardized by two liquid scintillation counting methods:The CIEMAT/NIST method with the54Mn-standard efficiency tracing and the triple-to-double coincidence ratio(TDCR)method.The samples were prepared with Ultima Gold TM AB liquid scintillation cocktail in low-potassium glass vials.In the application of the CIEMAT/NIST method,the computer program EMILIA was used to calculate the efficiency of3H and54Mn according to the KL1L2L3M atomic rearrangement model.And the detection efficiency of the TDCR counter was calculated using TDCR07 code,which makes it possible to allow for the potential asymmetry between the three photomultiplier tubes.The influence of stopping power and k B factor is discussed in the paper.When a power approach is adopted for the stopping power for electrons below 1ke V and k B is chosen to be 0.0075 cm/Me V,the relative deviation will be only 0.3%between the two methods.
基金supported by the National Natural Science Foundation of China(61327806)the Youth Foundation of Beijing University of Posts and Telecommunications(2016RC14)The Corresponding Patent(CN 106209284 A)is pending
文摘In this paper, channel spatial characteristics which mainly depend on the spatial correlation are selected as the significant factors in over-the-air （OTA） testing for multiple input multiple output （MIMO） devices. The multi-probe anechoic chamber method, a promising candidate of the MIMO OTA testing methods, can reproduce the multipath environments in a controllable manner. A novel physical configuration based on the variation of relative positions of probes in a MIMO OTA setup is put forward to obtain better spatial characteristics. Two physical configurations are presented to make a comparison with the typical configuration in this paper. The simulation results show that by making a proper probe configuration, good channel simulation accuracy can be achieved. Meanwhile, in order to get better performance of emulating channel spatial characteristics, probes in the first and the last probe rings should be placed symmetrically in three dimensional （3D） physical probe configuration.
