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The marine medaka Oryziasmelastigma was used as model organism to detect and evaluate the cardiac function alterations of medaka embryos due to oil exposure induced ecotoxicological effect in the present study. Results showed that the developing medaka heart was a sensitive target organ for the toxic effects of crude oil. Cardiac function of medaka embryos was clearly affected by exposure to WAF of crude oil after 24 hours exposure. Significant differences in cardiac structure and function of medaka embryo were found between exposed and control groups. The chemicals in crude oil slowed down the embryos heart rates, reduced cardiac contractility capability and causes irregular heartbeats. At higher exposure concentrations (7.2 mg/L), swelled and enlarged heart morphology, lower blood circulation and accumulation of blood around the heart area was found. These findings indicate that cardiac function of marine medaka embryo may be used as a toxicity model and biomarker for oil pollution.

This paper studied the methane/moist air combustion characteristics in smooth microtube and microtubes with five different shape grooves and proposed the microtube groove dimensionless shape factor F=4πS/L2. The results show that the appearance of five grooves make combustion components and velocity occur jumping change and the vortex flow appears. The highest methane conversion rate is for the microtube with triangle grooves, which also indicates that the smaller shape factor is more in favor of methane conversion.

This document mainly explains a new method of evaluate the energy harvested from vortex-induced vibration phenomenon of the circular cylinder. The external flow field of the cylinder has been solved by a RANS method together with the one equation turbulent Spalart-Allmaras model. The feedback effect of the circuit has been calculated by a matrix method to obtain the damping and the natural frequency of the system. Then the voltage output has been solved by a quasi-steady method. Finally, we discuss the computing method of the power output.

In this paper, the sandwich structure which is consist by the aluminum foam core and CBF(continuous basalt fiber) composite plate is tested by the static and dynamic mechanical property under confining pressure, and the confining pressure experiment is done through add cylindrical tube to the sandwich structure circular specimens. The static mechanical property is tested by WDW3100 electronic universal testing machine, and its dynamic mechanical property is tested by the SHPB(Spilt Hopkinson Press Bar) device, Besides, the strain rate effect of this sandwich structure under confining pressure is tested too, From the experiment results we can see the static and dynamic mechanical properties of confining and no confining results is very different, and this study will provide references for further numerical simulation and damage studying of this kind of sandwich structure.

The continuous basalt fiber (CBF) as inorganic fiber obtained from the basalt melt. It has high elastic modulus, low bulk density, low thermal conductivity, low moisture absorption rate and excellent alkali resistance, etc. In this paper, the split Hopkinson pressure bar (SHPB) technique is used for testing the CBF composite plate and its sandwich structure with aluminum foam core dynamic mechanical properties, and then to study the dynamic properties of CBF composite plate and its aluminum foam sandwich structure under different high strain rate. From the test results we can see that the CBF-foam aluminum sandwich structure has superior energy absorption properties, and also from the experiment results we can obtain that the sandwich structure dynamic stress-strain curves has a typically "three-phase" characteristics and strain rate effect.