Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Dong Yu Xu"'
Publikováno v:
Geoderma. 327:55-62
As the world's largest water diversion project, the South-to-North Water Diversion Project in China will have potential environmental effects on the Miyun Reservoir (MYR). However, Cu is a toxic pollutant, and the potential risk of Cu remobilization
Publikováno v:
Huan jing ke xue= Huanjing kexue. 39(12)
The Three Gorges Reservoir (TGR) has achieved the target of water storage of 175 m for eight consecutive years until October 2017. To study the temporal and spatial variation of nickel (Ni) in different water periods under 175 m operating conditions
Publikováno v:
Guang pu xue yu guang pu fen xi = Guang pu. 36(10)
Silicon is not a natural component of gasoline but it can cause silica deposition in vehicle combustion system which may lead to severe engine failure. Silicon is present in gasoline in different chemical forms. The analysis of oil products by direct
Publikováno v:
Guang pu xue yu guang pu fen xi = Guang pu. 36(4)
Platinum group elements (PGEs) can be naturally found only at very low concentration in the earth crust. However, the increasing usage of PGEs in vehicle exhaust catalysts, and some other applications cause their anthropogenic emission and spread in
Publikováno v:
Huan jing ke xue= Huanjing kexue. 37(9)
In order to investigate the pollution characteristics of vanadium in sediments of the Three Gorges Reservoir (TGR), 67 sediment samples were collected from the section between Chongqing to Yichang in TGR. The concentration and chemical speciation of
Publikováno v:
Applied Mechanics and Materials. 624:8-12
1-3 piezoelectric-damping composites were fabricated using piezoelectric ceramic as functional filler and epoxy resin as matrix by cut-filling method. The fabrication procedure of the composites was introduced. The effect of ceramic volume fraction o
Publikováno v:
Applied Mechanics and Materials. 575:580-584
This paper described fabrication and comparison of embedded ultrasonic sensors for NDE applications. A 1-3 cement-based piezoelectric composite was used as the sensing element of the ultrasonic sensor. As a front matching layer between test material
Publikováno v:
Applied Mechanics and Materials. :1222-1225
A new kind of embedded acoustic emission (AE) sensor has been developed and it was made up of 1-3 cement-based piezoelectric composites. Compared with those sensors which were traditionally affixed to concrete structures, the embedded AE sensors coul
Publikováno v:
Applied Mechanics and Materials. :1273-1277
In order to increase the sensitivity, frequency bandwidth and longitudinal resolution of the 1-3 cement-based piezoelectric ultrasonic sensor, different metal powder/epoxy resin composite materials were used to make backing layer, and the performance
Publikováno v:
Applied Mechanics and Materials. :1394-1397
A barium ferrite modified 0–3 cement-based piezoelectric composite was fabricated with piezoelectric ceramic [0.08Pb(Li1/4Nb3/4)O•0.47PbTiO3•0.45PbZrO3], sulphoaluminate cement and barium ferrite by compressing technique. It is well known that