This paper adopts wet method to prepare serpentine particles on the planetary ball mill, executes lipophilic degree tests and friction and wear tests of these particles. The results showed that: 1) as the modification agent, the optimum dosage of oleic acid is when the volume ratio of oleic acid and serpentine particles is 2, and the optimum time of milling (modification) is 24h. 2) 4012 maritime lubricating oil with serpentine particles has obvious anti-wear and friction effect, and the optimum dosage range of serpentine particles is 0.9%-1.0%. According to the outcomes of metallurgical microscope observation and electron microprobe analysis, a conclusion can be drawn: during the process of friction and wear, serpentine particles brought on physical or chemical reactions with the surface of test samples, create a layer of protective film, thus this kind of lubricating oil has filling function to the furrow of friction pair surface, so as to decrease the surface roughness, decrease the degree of friction and wear.

Study researches durable factors of the grain size in 18CrNiMo7-6 by heating and cooling method. Results show that alloying elements Nb and Al have a strong pining effect on the grain boundaries, Al/N ratio between 2.0-2.5 can promote the grain not to grow up for a long time, and refine grains significantly with furnace heating and after carburizing-quenching once, and can inhibit the abnormal growth of individual grains.

In order to investigate 3-D situation, the wind and the waves on the interaction on the influence of water object characteristics, this article through to the second development software Fluent, numerical simulation for 3D wave the dynamic process of the wave. First of all a three dimensional two phase numerical pool, the definition made wave plate boundary for movement, according to the characteristics of sine wave launch made wave plate movement rules, and through the user-defined function (UDF) DEFINE_CG_MOTION macro, realize the made the movement of wave plate, analyzes the cycle 2 s stroke 3 m and cycle 6.0 s stroke 0.5 m of sine wave. Second, blowing and horizontal plane Angle 45 ° 2.0 m/s wind, get the jump irregular wave wave process. The results found that reduce the maximum wind trough value, at the same time, improve the big wave peak, adding to the pool of wave, for numerical simulation of 3-d situation seas over deck, leak, prevent oil spill and the foundation animals.

The digital data collected in current live forensics is always suspected in terms of integrity and fidelity when viewed as evidence. In this work, trustworthiness of evidence obtained from physical memory image is studied. The trustworthiness of evidence in physical memory image can be addressed as how closely the memory image accurately or truthfully represents the real memory of the target machine. Firstly, based on a physical memory analysis model, the effect of memory acquisition tool on live forensic evidence is analyzed. Then, two aspects are analyzed to evaluate the extent of memory change. A formula using probability theory and mathematical statistics is given to quantitatively calculate the degree of memory change. At last, through the experimental analyses, the influences of key traces are analyzed, and the trusted probability of the live forensics tool is assessed and calculated.