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For a smaller number of layers (n = 4) the fitting was worse (~2%) and nonhomogeneity of surface layer was not so obvious.
In this series of samples the grains of 500 nm in size and ~50 nm in height form larger clusters of ~1500 nm in diameter and 150-200 nm in height.
The AFM observations revealed that the topmost layer for sample formed at etching p-Si (0.09 3 cm) for 30 min at 15 mA/cm2 was relatively smooth with ~50 nm grains of 20-50 nm in height, though some large defects of 10 µm in size and ~1 µm in height were observed.

Toole [11] found brown rot that caused about 18% loss in compressive strength perpendicular to the grain at 2% weight loss.
Similarly, in [12] Mizumoto found a 10% reduction in compressive strength parallel to the grain at 2% weight loss.
The number of samples for each test in the test period was set at 10 pieces to the material.

High number of SOFC developer such as Global Thermoelectric Company, Westinghouse Electric Co6rporation, Siemens (now called Siemens Westinghouse Power Corporation) and Fuji Electric was established the stability of SOFC component materials.
The grain size of the cathode also must be considered.
Grain size smaller than 100 nm comes with homogeneous nanostructured will enhance the performance and maximize the long term stability of the IT-LTSOFC.

Magnetic parameters reflect the type, grain size and concentration of magnetic minerals in samples [10,11]. χlf and χhf generally reflect the concentration of magnetic minerals, especially ferrimagnetic minerals (e.g., magnetite).
χfd% is a sensitive parameter for detecting the presence of SP grains (<0.03µm).
Table 1 Descriptive statistics of soil magnetic susceptibility in Tianbao Mount area of Pingyi County, Shandong Province Samples Variable Minimum Maximum Mean brown soil N=7 χlf (10-8m³/kg) 298.91 888.83 616.72 χhf (10-8m³/kg) 295.99 885.01 600.13 χfd% 0.05 12.96 2.17 cinnamon soil N=20 χlf (10-8m³/kg) 45.02 115.41 82.80 χhf (10-8m³/kg) 39.67 101.48 71.25 χfd% 10.95 13.96 12.69 Note: N-The number of samples Magnetic properties of the cinnamon soil profile For the cinnamon soil profile, the average value of χlf is 82.80×10-8m³/kg, varying between 56.8×10-8m³/kg and 115.41×10-8m³/kg.

In addition, with increase of WC content in composite powder, the number of WC particles in the field of view increases as shown in Fig.3.
The second reason is that WC particles can hinder the growth of the dendrite in the cladding layer, which is more conducive to the grain refinement, by this way the hardness of the cladding layer is improved.
It can be seen that there are mostly coarse grains in the arc surfacing coating, and the dendrite arm space is much larger than that of the laser cladding layer (as shown in Fig.2).

The average thickness of mining 2# coal bed is 3.6meters, dip angle is 2~70, false roof in thickness is 0.02~0.15 meters, it is composed by black mudstone and sandy mudstone; the immediate roof is composed by black mudstone, its thickness is 2.0 meters; the upper roof is composed by k8 medium-grained white sandstone, its thickness is 10.0m, the jointing of coal bed roof growths, after mining, the roof can inbreak naturally.
Based on the fractal geometry theory, the experiment covers the distribution of certain rock mass fracture with different scale(r) grid square, and observes the corresponding fracture number in different scale grid square, that fracture length is greater than or equal to the length of corresponding grid square, its number and scale according to the following fractal law: N(r)∝r-D, this relationship is expressed in double logarithmic coordinates, the experiment can receive the relational curve of lgN(r) ~lg(r), the relations in the double logarithmic coordinate system is the simple linear relationship, the absolute value of the linear slope is the fractal dimension D.
This papers cover the figure with the r=20, 10, 5, 2.5 to square, counts the fracture number, respectively, counts the value of lgN(r) and lg(r), obtains the double logarithmic figure using least squares method to fit best linear, such as figure 5, at last, counts the fractal dimension value, for example table 1.

This is related to the fact that the most intensive fatigue plastic deformation occurs on the surface of one grain thickness metal layer [1].
The fracture surface gloss in the fatigue crack propagation region is more expressed at the loads similar to the fatigue limit, and it is more emphasized at bigger number of cycles till failure.
Small loads and a big number of cycles till failure evoke the formation of a big, smooth and glossy region.
With the increase of load, the number of fatigue crack hotbeds increased.

Figure 1 show typical X-ray imaging characteristics, a large number of porosity produce in the critical full penetration weld and part penetration weld, even if under the of condition of the rigorous surface treatment before welding and the perfect gas shielding during welding process.
With regarding of porosity shape, one is round that occurs usually in full penetration weld, in which large one is in weld center and a number of small porosity randomly distributed in the weld, and some micro porosity is difficult to identify by X-ray.
The wall of round porosity is smooth, and the interaction of dendritic growth and grain cells can found on it, which belongs to metallurgical porosity.
Matsunawa, Seto et al used high-speed X-ray imaging systems to observe keyhole fluctuations for the steel and aluminum part penetration laser welding, and identified a large number of bubbles generating periodically at the bottom of keyhole, keyhole diameter and depth fluctuate strongly, and bubble move with the flow of metal pool, but no full penetration laser welding [6-9].

They found that colchicine has the effect of inducing cell chromosome doubling, a finding that technically solved for the reliability of chromosome doubling, greatly promote the method of artificially induced polyploidy has received more than one thousand kinds of polyploid plants, many have been widely used in production, and made great achievements. 2.1.1 Physical process Temperature catastrophe, ray irradiation, mechanical damage and pick the heart can make the induction of polyploidy.At the meiosis of coffee pollen mother cells on neutral species can get a lot of diploidy pollen grains during low temperature (8 ℃ ~ 10 ℃) deal directly with the flower organs[5];Using uv irradiation beet flower bud 20 min can lead to selfing generations have 2 strains produce pollen, X-ray irradiation can produce polyploid rice;In addition, the plant tissue is cut or after grafting, tend to produce callus in slit, certain callus cell chromosome can double nature, develop into polyploid branches in the
The mechanism of Colchicine is that it can inhibit the formation of the mitotic spindle at Cell division and chromatid divided, but resulted in the nondisjunction cytoplasmic double chromosome number.
The development of tissue culture technology makes a possible which is chossing single cell or a few cells as induced material, again differentiates induction of double cell into a plant, It not only can reduce and avoid the conventional processing mosaic generating interference, obtain homogenous polyploid, improve the efficiency of mutation.In addition, the mutation of the group can guarantee the success of the polyploid screening, and once selected polyploid can quickly in a short time to produce a large number of high purity, good quality, no plant diseases and insect pests of field identification of tube seedlings to facilitate and promote. 2.1.3 Biological process Somatic hybridization method:Somatic hybridization is also called the protoplast fusion, which is based on the development of tissue culture and protoplast culture.With the establishment of the protoplast regeneration system and the mature of fusion esearch techniques and conditions, cultivating polyploid by somatic hybridization
Bohanec B[11] found it has best effect under 0.5 g/L of colchicine treatment on Mn hyperaccumulator pokeweed crown growing point of 24h, mutation rate can get 46%, the chromosome number identification of the variation polyploid induction is tetraploid, so the method of using colchicine induced pokeweed polyploidy is feasible, it also provides a new train of thought for the excavation of hyperaccumulation plant germplasm resources Polyploids is short and strong, so it has better resistance to lodging, its broad leaves, flower diameter and shape parameters were significantly greater than the diploid, which conforms to the characteristics of polyploid groups.

Therefor, it is impossible to pay attention of the special meaning of a grain of sand, or a drop of dew.
However, when you stand beside her, you will be shocked by nature, even in the wilderness two cliffs have been cut out when you stroll on the bottom, you will feel the vitality that after thousands of years of natural growth those plants shows, turns out that life is so strong, like trees and flowers that growing at low-laying valley that can not enjoy too much sun, but still grow well; in the Valley will inevitably encounter some caves, a number of stalactite morphology varied, and often give rise to all kinds of dreaming, made people come city hustle and bustle turn to have the mood of playing with the nature.
Therefore,take activities and provide a large number of non-construction space for these activities is the key of the plan buildings in the valley must be kept to a minimum, a number of wood bridge flow through, one by one cave is a natural space, occasionally There are several small cottage ,it is enough. 4.3 Project Location Fully exploit the value of its unique resources, highlighting the canyon’s natural ecology, the original plain, entertainment, fitness adventure, interesting features, etc.