Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Guofeng Du"'
Publikováno v:
Shipin gongye ke-ji, Vol 44, Iss 12, Pp 37-44 (2023)
In order to prepare low-molecular-weight polysaccharides with high antioxidant activity, low-molecular-weight Enteromorpha polysaccharides were prepared by the method of microwave-assisted H2O2/VC degradation using Entermorpha prolifera from the coas
Externí odkaz:
https://doaj.org/article/a8e2176dd5604a9d8fbfb0ffe54e430e
Publikováno v:
You-qi chuyun, Vol 39, Iss 7, Pp 788-800 (2020)
In order to study the stress performance of buried pipelines under different types of faulting, the soilbox test device was made to simulate the fault movement. Then, the strain distribution and overall deformation characteristics of buried pipelines
Externí odkaz:
https://doaj.org/article/a5d47343878a4ba09c07102b19110275
Publikováno v:
Buildings, Vol 13, Iss 1, p 56 (2022)
To study the axial compression performance of a steel-reinforced ultra-high-performance concrete-filled square stainless-steel tube (SR-UHPCFSSST), eight specimens were designed with different length-to-diameter ratios and skeleton contents, and axia
Externí odkaz:
https://doaj.org/article/0d9cb14eb9c54414b8818009436e4cd1
Publikováno v:
Energy Science & Engineering, Vol 7, Iss 6, Pp 3174-3185 (2019)
Abstract A cantilevered piezoelectric coupled energy harvester with variable cross section is proposed to obtain the electric power from the longitudinal motion of the near‐shore sea wave. In order to describe the practical process of the sea wave
Externí odkaz:
https://doaj.org/article/6f70647304de45a483543c6aca191334
Publikováno v:
Sensors, Vol 22, Iss 19, p 7133 (2022)
Butt welding is extensively applied in long-distance oil and gas pipelines, and it is of great significance to conduct non-destructive ultrasonic testing of girth welds in order to avoid leakage and safety accidents during pipeline production and ope
Externí odkaz:
https://doaj.org/article/da28bda6448646418a889846a5440d21
Publikováno v:
Advances in Civil Engineering, Vol 2021 (2021)
The mechanical properties of T-shaped concrete-filled steel tubular (TCFST) short columns under axial compression after elevated temperature are investigated in this paper. A total of 30 TCFST short columns with different temperature (T), steel ratio
Externí odkaz:
https://doaj.org/article/a835e9675f754e2aaf5677560c9fd6d7
Publikováno v:
Advances in Civil Engineering, Vol 2021 (2021)
The length of buried pipelines usually extends thousands of meters or more in engineering, and it is difficult to carry out full-scale tests in the laboratory. Therefore, considering the seriousness of pipeline damage and the difficulty of operating
Externí odkaz:
https://doaj.org/article/9394a6a93b184958992cfc7cf5f6eea4
Publikováno v:
Advances in Civil Engineering, Vol 2020 (2020)
To research the web crippling performance (i.e., the ultimate web crippling bearing capacity and ductility) of high-strength cold-formed (HSCF) rectangular steel tubes under concentrated load, thirty-six specimens with different bearing plate width,
Externí odkaz:
https://doaj.org/article/ca60a250de764238a293c98aba3eabff
Publikováno v:
Sensors, Vol 22, Iss 6, p 2076 (2022)
The baseline-free damage detection method of Lamb waves has the potential to obtain damage information efficiently in plate structures through damage scattering signals. However, the missing detection of damage occurs occasionally due to the angular
Externí odkaz:
https://doaj.org/article/77228a83efed461fb4d8f19db6846732
Publikováno v:
Applied Sciences, Vol 11, Iss 23, p 11504 (2021)
In view of the low output power density of the existing footstep harvesters, two pairs of distinctive L-shaped beams and the corresponding piezoelectric brick models are developed to improve the utilization efficiency of the piezoelectric patches bon
Externí odkaz:
https://doaj.org/article/080c7b0d7a1c478bb56de74dbbc2e108