Search results

Rheological data were collected on a controlled stress/rate rheometer (Anton Paar Physica MCR302) equipped with a P-PTD200/AIR temperature control unit using a cone and plate system (diameter = 25 mm, φ = 1o, gap = 50μm).
Steady flow properties of electrode paste samples were obtained by varying the equilibrium step time for data point collection from shorter values in low shear rate to longer values in high shear rate.
To determine the yield point, the sample was allowed to rest for 300 s before performing a stress sweep from 1 to 1000 Pa collecting data points logarithmically.
However, the paste’s passing ability through the meshes is always affected by viscosity and viscoelastic properties of silver paste, leading a reduction of weight printed.
So it can be confirmed that enhanced elasticity as the increase of polymer content and molecular weight is the main reason for the reduction of weight printed.

For confirmation, the peak positions (2θ) of the XRD patterns of the films were compared with the standard X-ray diffraction data file [JCDPS card: 05 - 0592].
It is noticed from the Table 1, that the observed values are slightly less than the reported values of the [JCDPS card: 05 0592] data for cubic PbS structure.
The crystallography of the films is good and characterized by five principal peaks corresponding to (1 1 1), (2 0 0), (2 2 0),(3 1 1), and (2 2 2) planes of the face centered cubic structure of PbS, confirmed by comparing the XRD patterns of the films with that of data file [JCDPS card: 05 - 0592].
The film morphology explains these results, when the film thickness enhances the grain size enhances, like mentioned before; the roughness of the surface enhances with increasing grain size which leads to a reduction in the transmission.
On the other hand, the increase and decrease in the optical band gap corroborate well with the disorder reduction and increment in films network as shown in Fig. 9.

The poly (sodium acrylate/acrylic acid) water-absorbing resin was prepared by aqueous solution polymerization with acrylic acid (AA) as the monomer, calcium carbonate as the modified additives, N, N- methylene double acrylamide (NMBA) as cross-linking agent, ammonium persulfate (APS)/sodium sulfite oxidation reduction type initiator.
Select L25 (56) orthogonal table conducting formulation optimization experiment.Orthogonal experiment data are shown in Table 1.
Polymerization reaction temperature is common at 70 °C or so, but the experiment using oxidation reduction type initiator[17] to free radical initiation reaction, reduced the experimental temperature to 55°C, made the experiment control operating more easily, the performance of the modified resin is also better.

The cracks of rock surface transform from irregular crack structure to homogeneous pore structure gradually at high temperature, the weakening of rock heterogeneity is the basic reason for the decrease of fractal dimention of rupture surface, the fractal dimension is reduced from 1.634 at 200 ℃ to 1.595 at 1200 ℃, the margin of reduction is 2.39%.
Using fractal dimension calculation software[15], fractal dimension can be calculated by importing image files or text data files.
The cracks of rock surface transform from irregular crack structure to homogeneous pore structure gradually at high temperature, the weakening of rock heterogeneity is the basic reason for the decrease of fractal dimention of rupture surface, the fractal dimension is reduced from 1.634 at 200 ℃ to 1.595 at 1200 ℃, the margin of reduction is 2.39%.

By establishing a recycling process for the ultra-precise removal of the thin-film nanostructure, the optoelectronic semiconductor industry can effectively recycle defective products with a reduction of both production costs and pollution.
Data showed that the gap width between the electrode and workpiece directly influences the current conditions and the discharge of dregs in the electrolyte [4].

Significant reduction in etch rates was observed when the films were deposited on heated substrates.
The plane responsible for this peak was identified using ASTM data and is marked on the diffractogram.

The data show that the permeability coefficient of washed ore is 12.7 times than that of raw ore; permeability coefficient with the compaction degree 38.3% is only 3.78% of that in natural state; Chemical blockage brings about a fall of permeability coefficient by 93.5%, and earlier physical blockage leads to the decrease of it by 43.2%.
As shown, the fine particles in the pore naturally migrate toward pressure reduction direction, and they are captured when coming across the pore with smaller size.
In addition, a part of particles tend to engender surface sedimentation after small particles entering large pore throat, which can bring about the reduction of effective seepage area[10], and the other particles would continue migrating downward.

Analysis of optical microscopy and SEM data showed that shear bands are distributed throughout the whole volume of HPT-specimens.
To the best of our knowledge, the highest density of shear bands with a spacings of 30 nm was observed in Zr70Cu20Ni10 amorphous ribbons after high-energy ball milling [20] and Pd40Ni40P20 bulk metallic glass after room temperature rolling at 99% thickness reduction [21].
However, minimum spacings of 30 nm were demonstrated for ribbons with a thickness of 40 μm [20] and samples with a thickness of 10 μm (99% thickness reduction of initial BMG discs with a thickness of 1 mm) [21].

The corrosion rates, which were calculated from the weight loss data, showed that the inhibition efficiency of the extract increased from 86.9% to 89.0% as the concentration of banana peel extract increased from 300 ppm to 500 ppm.
Among the impact of corrosion are costly maintenance and repairs, shutdown of plants, reduction in efficiency, and waste of valuable resources [1].
Reduction of corrosion rate can be done in many ways, and one of the economical, popular and acceptable practices is the use of corrosion inhibitors.

Its availability and reliability are well shown through the data processing examples.
Suppose the original data sequence as, the observed value of variables at Time; m data number, sequence as non-equidistance, i.e. distance is not a constant.
The least square of the parametric vector to be identified is estimated as (6) According to the new information priority principle of the gray system theory, with the full use of new information, we can take the initial value as, and the time response of the grey differential equation is (7) As for formula (7), when,, we can get the fitting value of the original data after reduction (8) The absolute error of the fitting data is: (9) the relative error of the fitting data(%)： (10) fit the mean value of relative errors of the data row .
Considering from the perspective of the minimum error of the whole data, the least square method can minimize the sum of square error of the model to determine the initial conditions, and the new data point error of the fitting here is not zero
Table 1 shows the experimental data of fatigue strength changes of titanium ally as the temperature changes, which is a non-equidistant sequence.