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Antibacterial properties: The Escherichia coli were used to investigate the antibacterial properties, the number of bacteria was obtained by the method of enumeration tests.
Table 1 Thermal Stability of Cu-Antibacterial White Carbon Black Modified by Surfactant Test item Temperatures(oC) 400 500 600 700 800 900 1000 Appearance color white white white white white white white Average grain diameter(μm) 5 5 5 5 5 5 5 Bacteriostasis rate(%) 98 98 97 98 98 98 97 Analysis of Light Stability.
Table 2 Light Stability of Cu-Antibacterial White Carbon Black Modified by Surfactant Test item Light source Sunshine Fluorescent light Appearance color white white Average grain diameter(μm) 5 5 Bacteriostasis rate(%) 98 98 Therefore, the Cu-antibacterial White Carbon Black modified by surfactant, which has good thermal and light stability, is appropriate to be added to materials and made antibacterial product.
The antibacterial experiment is performed by calculating the number of bacteria.

MapReduce is a popular and widely used fine grain parallel runtime, which is developed for high performance processing of large scale dataset.
Data files are organized by date center number and date.
Any car (plate number, in fact) appears in place more than this number, it could be a clone car or speeding car.
So we use the License Plate number as key, and try to find the car with the same License Plate number appear in more than 10 times within 5 minutes.
Each license plate number with a list of all its shooting times.

The compaction pressure influences the number and size of the pores.
The characteristics of the powders DESIGNATION: C Carbon black from natural gas DESIGNATION: Fe Iron Powder DESIGNATION: Co Cobalt Powder DESIGNATION: W Tungsten Powder Technical Index Technical requirement Technical Index Technical requirement Technical Index Technical requirement Technical Index Technical requirement Humidity ℅ ≤ 0.5 Purety (%) ≥ 98 Iron Fe (%) ≤ 0.30 Iron Fe (%) Av grain ≤ 0.1 Ash content ℅ ≤ 0.1 Oxygen O2 % ≤ 0.6 Carbone C % ≤ 2.50 Oxygen O2 % ≤ 0.25 Volatile substance ℅ ≤ 1.5 Apparent density g/cm3 0.7 Oxygen O2 % ≤ 0.50 Chloride residue (%) ≤ 0.13 Results and Discussion In iron alloys, since the iron particle generally has a spherical shape with a regular microstructure of the grain boundaries, as the diffusion in these spherical particles has a higher activation energy than non-spherical particles.

Detailed secondary electron microscopy (SEM) performed on the longitudinal cross sections of the worn alloys indicates that the subsurface deformed layer beneath the worn surfaces is composed of a number of distinct layers like the mechanically mixed layer (MML), the shear deformed and bulk layers with increased hardness as the surface was approached.
Considering that the displacement was a direct result of shear deformation, the equivalent plastic strain, ε was calculated from the shear angle between grain boundaries and the normal to the worn surface, θ [2,4,5,11]; θ ε tan 3 3 = (1) by assuming that the shear deformation is parallel to the surface (refer to Figure 2).
The deformed structures consist of rotated and elongated primary grains towards the sliding direction.

Formulas and values for coefficients of transformation of electromagnetic field to the acoustic one for a number of metals are given.
There are a simultaneous increase in durability and plasticity and decrease of the sizes of grain.
Then the integral number of half waves of a sound is located on sheet gage.

The microstructure of resultant specimens were characterized by measuring grain sizes of primary austenite and its solid fraction, using an optical microscope equipped with a digital image analyzer.
For this reason, the aspect ration was higher, but solid fraction was smaller because of smaller number of nuclei when compared to those at 10 deg.

Electroplated diamond wire saw applying ultrasonic vibration to cut polysilicon experiment and simulation analysis Zhang Liaoyuan1, a, Wang Shuo2,b and Shao Zhongqing3,c Lv Zhongxiu4,d 1Shenyang Ligong University, Shenyang , 110159, China 2Shenyang Ligong University, Shenyang , 110159, China azly6217@163.com bwangshuo_dream@126.com Keywords: Ultrasonic processing；polycrystalline silicon；Electroplated diamond wire saw Abstract: In this paper, on the basis of a large number of literature at home and abroad are summarized, we used the complete with independent intellectual property rights ultrasound wire-cutting processing machine tool to carry out machining experiment , and the ultrasonic wire cutting mechanism and process was carried out in-depth study.
Meanwhile, during the ultrasonic composite cutting process, abrasive contact with the workpiece is periodic in the tangential direction, there is a certain time in a period which has abrasive grains and the workpiece are separated, the interaction does not occur between the two. so in the whole process of cutting the tangential sawing force average will be smaller.Therefore, tangential sawing force under the action of ultrasonic is smaller than in ordinary cutting in the same conditions, the sawing force was reduced by an average of 20% to 30% in this test condition.
A number of micro cracks and pits are residual on workpiece, because the material is removed in a brittle mode, chip formation is result of the crack cross extension, eventually remove in microscopic crushing of granular form.

Its movement form is equivalent to a pair of gears transmission which the surface of the gear-honing-tool is adhered a layer of grinding grain.
Going a step further, the affection degree to the quality of tooth flank about the grain size of CBN had been studied by the means of experiment.
Table 1 The standard parameters of gear honing tool and workpiece gear Items Modulus [mm] The Number of Teeth Helical Angle The Pressure Angle of Graduated Circle Tooth Width [mm] the honing wheel mn=3 14.076 degree 20 degree 25 the gear workpiece m=3 26 0 degree 20 degree 33 Fig. 3 The distribution of contact line at the tooth flank It can be seen that the contact-line is a space curve at the involute helicoids of tool, and its theoretical shape has some connection with the geometric parameters of gear honing tool, and then the contact-line distributes along the diagonal direction of the tooth flank, the CBN abrasive shedding phenomenon is more serious near the contact-line region for the electroplating honing tool, while the CBN abrasive in other regions of the tooth flank is almost not involved in cutting process.

As a result of observing the microstructure of 4 parts after T6 heat treatment, primary Al-α phase was globularized and fine Si particles were distributed around the grain boundary.
Introduction Semi-solid metal (SSM) processing deals with semi-solid slurries, which is comprised of non-dendritc solid grains and liquid matrix.
Core (a) (b) Fig. 3 Die structure for the SSDC: (a) two steps die system with the lower-positioned gate type for the lower arm part; (b) three steps die system with the center-positioned gate type for the knuckle part Table 1 The die structure, the dimension of gate, plunger tip, and sleeve, and part and pouring weight in the 4 automobile suspension parts Gate Plunger tip Part name Die structure Area [mm 2 ] Thickness [mm] Length [mm] Taper [˚] Sleeve length [mm] Part weight [kg] Pouring weight [kg] Arm Two steps die 1,560 12 120 5 550 0.91 2.3 Lower arm Two steps die 2,016 16 150 5 600 2.5 4.3 Upper arm Two steps die 1,368 16 150 5 600 2.3 4.1 Knuckle Three steps die Central filling type 3,203 12 150 5 600 2.4 4.3 Table 2 The dimension of overflow and air vent for the semi-solid die casting in the 4 automobile suspension parts Overflow Air vent Part name Volume [mm 3 ] Thickness [mm] Width [mm] Number

Nonetheless, these theories are generally limited to a single stage (sintering stages are defined, for example, in Coble’s model) and a single transport mechanism, while sintering is a very complex process, which may involve several different mechanisms for material transport [2]: evaporation/condensation, grain boundary diffusion, surface diffusion, volume diffusion, viscous flow… The classic two particles model (equal-sized spheres) has been used by several researcher for predicting densification during the initial stage of solid-state sintering of single-phase materials, such as alumina [3].
Computer simulations of sintering appeared between 1955 and 1965, and many researchers devoted much effort resulting in a large number of publications.
Rate-controlled sintering (RCS) of ceramics has been developed by Palmour and Jonson in 1967 as an empirical method for optimizing densification and grain size control.
In fact, the magnification of the optical system do not change with time or with the number of test performed.