Search results

Recently, a number of Ta-based oxides have been used as new photocatalyst materialsbecause of their high activity in the photocatalytic splitting of H2O into H2 and O2 [3,4].
Despite these successes, a number of key parameters that determine the photocatalytic activity remain unclear.
However, this type of reaction requires high temperatures and long calcinations, which lead to grain growth (i.e., smaller surface area) and loss of stoichiometry of the products.

Introduction With the rapid development and popularization of automobile, tire puncture has become the “number one killer” because of its unpredictable and uncontrollable accidents.
The data shows the number of car crash accidents, caused by been in a sudden flat at high speed, accounted for 49.81% of highway accidents, casualties accounted for 63.94%, direct property losses accounted for 43.38%, a tire failure mortality speed of more than 120 km per hour approached 100%.
And the Shaft grain connection design is done in the basic circle heart, and the installation structure diagram of the support institutions can be shown in Fig.4.

In this method, the profile of ground surface is completely covered with boxs and the number of boxs is counted.
The minimal number of boxs N(r) can be expressed Eq.1, where r is edge length of box, C is a constant value and FD is fractal dimension.
Jiao, Experimental study on brittle–ductiletransition in elliptical ultrasonic assisted grinding (EUAG) of monocrystal sapphire using single diamond abrasive grain, Int.

It is medium-grained sand.
After 24 h, Numbering and dismantling formwork, finally try body was kept in a maintenance box with the temperature of 20 ± 3℃during this time related performance tests were conducted [3]. 3 Test results and analysis Due to limited test equipments, in this paper only recycled concrete strength and stress-strain curve as part of the test results were tested.
A large number of research data show that, with the increasing ratio of recycled aggregate, recycled concrete strength is becoming lower and lower; But there are also data show that if the old concrete has high compressive strength, that is the strength of the recycled aggregates higher than that of recycled concrete, the recycled concrete intensity will increase with the increase of the ratio of recycled aggregate [6].

Since the number of manufacturing steps increases there is an increasing chance to reduce productivity and yield.
A number of changes can occur throughout the material life cycle that reduces CO2 emissions [3].
It can be mentioned that both the yield strength and the tensile strength of the wire increase with an increase in the continuous casting speed result in an increase of grain boundary area and finer dendrite arm spacing.

Porous films with very large internal surface area offer a number of intriguing features which have been exploited for the design of optoelectronic devices[5].
Nanostructured ZnO electrodes based on interconnected spherical particles have shown low efficiency of photocurrent due to charge-carrier recombination losses at grain boundaries between the nanoparticles in the film.
In this study, PEI, as an additive, contains a large number of amino groups in the long molecular chain, which could preferentially adsorb at different crystal faces and modify the surface free energy and growth rate [9].

Typical pores formed in sintered or foamed metals are irregular and have a great number of acute angles acting as stress promoters.
Based on the results from some investigations [4-6], a variety of attractive properties were produced separating gasar metals from a number of traditional porous metals.
The orientation of the grains was determined using a Rigaku RIU 300 X-ray diffractometer on transverse sections of the specimens.

A semi-quantitative analysis performed by microscopy showed the presence of large number of particles of single material, namely copper-rich particles, resin particles and metal wires/pins.
This situation became common for the fractions less than 0.8 mm and therefore this will probably be the minimum size grain to achieve in the shredding process in order to produce adequate material for the following physical separation steps.
Fig. 6 illustrates a spectrum where a large number of elements were found.

Preparation and Characterization of Gelatin/CMC Microcapsule by Complex Coacervation Yan Gao1, a, Ding Xie1, b*, Danni Han1, Jianxun Ouyan2 and Yongle Liu1 1 College of Chemical and Biology, Changsha University of Science and Technology, Changsha, Hunan 410114, China 2 Hunan Provincial Grain Bureau, Changsha, Hunan 410008, China agaomaomao2006@126.com, bcslg5148495@126.com.
Finally, these plates were scanned by infrared instruments at 500~4000 wave number.
The wavenumber of 3290.11 and 1030.27 are the special peak value of capsaicin and become weaken obviously in B and C; besides, the peak values of particles from microencapsules approximate those of gelatin-CMC coacervate at the wave numbers of 3411.58, 1646.46, 1550.15, 1461.74, respectively, showing the microencapsules are formed successfully[9,10].

Now there are a large number of problems have to be solved, such as disposable forming, precise forming, reduce the residual stress, deformation, and avoid cracking and get the satisfactory microstructure, etc .
A large number of new technologies have been used for DLF, such as ultrasonic vibration and electromagnetic stirring to alter and reduce residual stress.
Experiment The experimental material is Ti-6Al-4V spherical powder, Grain size from-100 to 200 mesh and oxygen levels for 0.07% and the material composition is list at table 1.