Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Song He Zhang"'
Publikováno v:
Huan jing ke xue= Huanjing kexue. 37(7)
A small-scale combined ecofilter was constructed using neutralized-used acid residue (NUA) and dewatered alum sludge (DAS), and the nitrogen removal for wastewater treatment and characteristics of denitrification bacteria using the NUA-DAS ecofilter
Publikováno v:
DEStech Transactions on Engineering and Technology Research.
The inherent vibration characteristics of the structure of a machine is modal and each modal only corresponds to one natural frequency, all kinds of rotor in various engineering need to avoid resonance through its natural frequency. The finite elemen
Publikováno v:
Applied Mechanics and Materials. 483:285-288
The dynamic model of nonlinear stiffness rotor-bearing system with pedestal looseness fault was set up, taking the linearity and cube item as the physics nonlinear factors. The periodic solution of system was analyzed by continuation-shooting algorit
Publikováno v:
Advanced Materials Research. :1093-1097
The model of three-span rotor-bearing system with three cracks in shaft supporting on the six sliding bearings was set up. The influences of crack faults to the responses of the rotor system were studied on numerical simulation. Along with the increa
Publikováno v:
Applied Mechanics and Materials. :1684-1687
Due to the feature and the forms of motion of the gears, the vibration signal of the gear is mainly the frequency modulation, amplitude modulation, or hybrid modulation signal corresponding to the gear-mesh frequency and its double frequency signal.
Publikováno v:
Advanced Materials Research. :1335-1338
The test rig of two-span rotor-bearing system with rub-impact and crack faults was constructed. The vibration of the rotor-bearing system was observed for different conditions, such as single rub-impact fault, double rub-impact faults and coupling fa
Publikováno v:
Applied Mechanics and Materials. :630-634
The aims of this study are to evaluate multiple antibiotic resistant Escherichia coli isolated from surface water and to investigate the presence and distribution antibiotic resistance genes (ARGs) in sediments of Taihu Lake. The results show that th
Publikováno v:
Applied Mechanics and Materials. :1270-1274
The nonlinear dynamic model of two-span rotor-bearing system with two cracks in shafts is set up, and the effects of two cracks in shafts on dynamic characteristics of the rotor-bearing system are analyzed. Along with the increase of the crack depth
Publikováno v:
Advanced Materials Research. 460:160-164
The dynamic model of the three-span rotor-bearing system with rub-impact fault was set up. The influence to nonlinear dynamics behaviors of the rotor-bearing system that induced by rub-impact of one disc, two discs and three discs were numerically st
Publikováno v:
Advanced Materials Research. :975-980
ThoughC. flumineais always used as a biomonitor to evaluate the aquatic environment, the adaptive mechanism to chromium is far from clear. In this paper, an acute toxicity experiment was conducted to study the alterations in Cr accumulation, nutrient