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Grinding media is used in ball mill for particle size reduction to meet requirements of concentration.
Finally, draw the curves of the relationship between ln（R0/R) and t according to experimental data and the data is linear fitted by formula(2), the values of k and the squared correlation coefficient value (r2) were obtained.

The main benefit of using fibre composites is optimization of airframes according to their specific properties granting virtually free shaping for advanced aerodynamics and drag reduction while simultaneously reducing weight of airframe [1].
Quasi-static nanoindentation with displacement controlled loading and maximum indentation depth hmax = 100 nm was performed to verify data measured using modulus mapping technique.
This value then increases to E' ≈ 8.5 GPa for 0.3 µm and then gradually decreases under the general range of storage moduli E' ≈ 7.5 GPa measured on intact and impacted locations.To obtain reference data for validation of results from modulus mapping measurements quasi-static nanoindentation was performed at all ROIs on both impacted and ruptured specimens.

Longer time driving behavior will arise imbalance of drivers’ physiological, psychological function and produce fatigue which makes perception slow-witted, movement sensitivity reduction and reaction time extension so that it causes traffic accident easily.
According to some statistical data: it can divide driving fatigue into 5 stages according to body symptom, spiritual symptom and nerve feeling: 0-2 hour is the adapting period that meets new driving work; 2-4 hour is smoothly driving period; 4-10 hour is fatigue appearance period; after 10 hours is fatigue aggravating period during which nerve slowly feeling symptom strengthens obviously; after 14 hours is over fatigue period, body and nerve feeling slow-witted symptom aggravate rapidly.
Setting the driving experience of virtual driver is 5 years and he has droved for one and a half hour, the data is shown in table 1 and 2.

More than 20 instability modes of single-ribbed arch with different height-breadth ratios are calculated in this paper and these 8 groups of data listed here are parts of them.
(1) From section 1 to 5, a conclusion can be drawn：under the condition of sectional area of arch rib unchanged, safety coefficient of single rib increases noticeably with the reduction of h/b, namely the possibility of out-plane instability decreases and the possibility of in-plane instability increases, like the five sectional instable modes shown in fig. 3.3
(4) The h/b of the data unlisted are either greater than three or less than 0.5.

During the continuous method of deformation wire nanostructuring total reduction rate in both draw dies was 19.88%.
Coefficient values of technological inheritance of wire mechanical properties after continuous method of deformation nanostructuring: βσ - coefficient of technological inheritance for values of tensile strength; βy - coefficient of technological inheritance for values of contraction The obtained data make it possible to come to the conclusion that the continuous method of deformational nanostructuring is most efficient when the torsional deformation ratio is in the range of 75% - 80% of its maximum value when the total deformation ratio in the dies does not exceed 20%, thus contributing to the highest level of mechanical properties.
The data obtained prove that using this method carbon wire can be processed in such a way that one kind of deformation does not exclude the practicability of applying another kind of deformation, but just the other way round, their combination intensifies their mutual influence on the efficiency of the nanostructure formation.

Therefore, in situation of the global energy shortage, energy conservation and emissions reduction are emphasized, and energy consumption control of the hydraulic system is more important [6].
Assuming each work phase system work efficiency is ηi, the various phases of the work input power is Pi, and all phases of the work time is ti, the average efficiency of system theoretically: ， (7) In which wi is the weight , by the following formula: (8) By calculating the simulation data and by completing a welding process, the total energy of motor input is 1196Kg, the output power is 76Kg, and the system efficiency is only 6%.
From the simulation data, the system efficiency is 24%.

Table 1: Summary of GPC, TGA, DSC and pencil hardness data PU GPC TGA DSC Pencil Hardness Mw Mn PDI Decomp. temp.
Fig. 2: (a) Storage modulus curve of PU and adamantane-based PU as a function of temperature; (b) Loss modulus of PU and adamantane-based PU as a function of temperature Fig. 3: Water contact angle of PU and adamantane-modified PU films Water contact angle measurements The water contact angles of four PU films were measured and their data are summarized in Figure 3.
On the contrary, adamantanediol-modified PU led to much reduction in storage modulus at low temperatures probably due to its lower reactivity with diisocyanes in the polymerization process.

In addition, the temperature rise of discharge water will lead to the reduction of dissolved oxygen in water, affecting the metabolism of organisms even biomes change, destruction of habitat for marine life [9, 10].
In addition, the experimental data were analyzed using software, calculating the temperature value of 50% survival of individuals using interpolation.
The curve (Fig. 1) was drawn according to the experimental data, with the scapharca subcrenatas mortality within 24h on the vertical axis, the salinity of water on the horizontal axis.

Designed surface treatment is the primary solution not only in terms of noise reduction of structure itself, but also with regard to the elimination of vibrations which are spread into the environment.
From these measured data there are not clearly noticeable differences in noise level and therefore, they were not included in the acoustic evaluation of the structure.
The evaluation was based on data measured in the measuring position 1, it means at the level of the deck, respectively, at a height of 1.1 meters above its surface (sound level meter placed on a tripod).

Introduction Optical memory, which allows the storage of large amounts of information, is one of the most desired targets for computing technology, since society continues to demand better tools to communicate more data at higher rates [1].
The two isomers of diarylethenes differ from each other not only in their absorption spectra, but in many physical and chemical properties including geometry, refractive index, as well as oxidation/reduction potential, etc [7].
Sincerbox: Holographic Data Storage (Springer-Verlag, New York 2000)