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Recently, a great number of novel semiconductor photocatalysts have been carried out to enhance the photocatalytic efficiency under UV-light by some simple methods.
With further increasing temperature to 500℃, XRD patterns of the prepared samples was pure BaV2O6 in accord with JCPDS 73-1034, which indicated a better crystallinity and increased in grain size.

Introduction A large number of polymers having the conjugated backbone structure such as polypyrrole [1], polycarbazole [2], polythiophene [3] and polyfluorene derivatives [4] have been synthesized and used as the electroactive materials.
Microscopically, the polymer film was ordered arrangements of the granules with a grain size of 100 nm and the growth of the nuclei was in the form of clusters.

Introduction Titanium dioxide (TiO2) is a multifunctional material having a number of potential applications, such as medical technology [1], gas sensors [2] and wear protection [3].
Experimental Procedures Commercial TiO2 powder (METCO 102, Sulzer Metco Inc., U.S.A) with the grain size of about 20-50 µm was used as feedstock and deposited using the A-2000 atmospheric plasma spraying equipment with F4-MB plasma gun (Sulzer Metco AG, Switzerland).

The MBN signal can be affected by phase, grain size, and dislocations and so on which are crucial factors for hardness.
Number 1 2 3 4 Hardness(HV)/5kg 452.8 422.6 360.9 229.0 MBN (mV) 193 217 254 299 Experimental procedure The high strength low alloy steel WH1500HF was chosen to be tested.

As a result the direct contact between MgB2 grains was excluded, and the resistance of the composite was determined by the flow of current through chains of LCMO-MgB2-LCMO-MgB2, etc.
This situation can be modeled by the structure of a large number of Josephson S −N−S junctions.

(12) It can get a single roller tooth tangential force Fq by Eq .12, Eq .9 and Eq .5, the whole teeth roll tangential force can be got by the arrangement method and number of roll tooth.
Distribution width depends on average width of the grain-size[4]

Meanwhile, the average corrosion depth of MgO/C brick numbered from 1# to 4# is summarized in Fig. 2.
Consequently, MgO grains in the brick can be removed more easily from the brick structure by mechanical movements of the slag [8].

The number of laser beam passes and the pulse duration were varied in this case [1].
Metallographic Analysis The metallographic sections were prepared to conduct a microanalysis on samples by using grinding skins with different grain sizes of the abrasive.

As the temperature grows,TiO2 crystal became better and anatase(101) plane diffraction intensity is stronger.This suggests that increasing reaction temperature do not cause abnormal growth, TiO2 grain size is more complete and the number of TiO2 introducted to bentonite clay interlayer increases, however, to a certain extent, cation exchange capacity of bentonite reduces, which is harmful to the exchange of TiO2 and hexadecyl trimethyl ammonium bromide.
When the quantity of butyl titanate is 5ml and the reaction temperature is 50℃, With the increase of reaction time, Heating makes that the free water of the inner surface of and interlayer water rapidly vaporize and escape, which will promote the formation and the structure of space, with the extension of heating, less moisture can escape, the number of gap reaches maximum; Continue heating, the gap and the channel number is not only no longer increases, but the temperature of the sample increases, space and channel structure become "soften" , the quantity also gradually reduce, the intercalating process of TiO2 particles weaks due to the heating time is long,.
Table 1 For different washing times, degradation of absorbance Washing times first second third fourth fifth degradation of absorbance 0.342 0.434 0.496 0.943 1.486 As shown in Table 1, with the washing number increases, the absorbance of intercalated photocatalyst and the degradation effect of the former three times is stable.
TiO2 loss more, degradation effect reduce and absorbance rise with the increase of the washing number.
TiO2 loss more and degradation effect reduce with the increase in the number of circulating degradation.

Introduction Natural pumice concrete is a kind of complex porous material, and its interior structure contains a large number of irregular, and cross dimension aperture gap.
The position of the peak is related to the pore size and the area of the peak is related to the number of pores with the corresponding pore size.
Fig. 7 shows the distribution of the T2 spectrum of air-entrained natural pumice concrete after 200 numbers of freeze-thaw cycles.
Analysis of NMRI Fig. 4 shows the results of the NMRI of the air-entrained natural pumice concrete after 200 numbers of freeze-thaw cycles.
The area with bright spots on both sides is small, while a small number of bright spots are large.