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As a common mineral admixture of concrete, silica fume contains a large number of reactive SiO2 and gives a low permittivity and permeability (εr=2.7, µr=1.0).
Compared with unhydrated cement particles, silica fume owns much smaller particle size, so that they can fill into small spaces between cement grains to give a much more compacted matrix.

It is distinguished by significant sedimentary characteristics of offshore interdistributary mud and offshore distributary channel, the main features: offshore interdistributary is characterized by relative small number of thin sand, thick layer of pure purple, mottled, gray-green, massive bedding, calcium tables, root, wormhole, less animal fossils.
As shown in fig.1-(b), silty mudstone is above the weak flooded fine-grained sandstone.

Note the twisting of the grains close to fracture surface.
This conclusion is supported by a number of other observations including the existence of shear lips on the outer periphery of the fracture plane, the significant twisting of metal crystals just beneath the fracture surface, the presence of deep machining marks on bore surface, failure location being situated on the unsupported section during the return stroke, and the presence of ratchets on the fracture surface close to the bore 2.

For getting useable circuit parameters (e.g. number of secondary turns on the core) at least a medium permeability level is necessary (~ 100.000 at 50Hz).
Understanding of the relationship between microstructure and magnetic parameters requires more detailed investigations because the results cannot be explained by simple grain size or internal stress effect: the most important changes in the magnetic parameters could be detected after the amorphous-nanocrystalline transformation seemed to be finished.

MgO is used to promote sintering and suppress abnormal grain growth (AGG). [15-18] The relative density of prepared composites versus the sintering temperature is shown in Fig.5.
As a second phase in the ceramic matrix, metal Al can play a number of roles.

Brittleness and grain interface fracture of high Cr and Cr-Mo cast steels can be controlled by moderate contents of aluminum and nitrogen elements plus sustaining temperature out of 900~1200℃ range[6].
Taking logarithm to both side of the above equation, a linear formulation can be obtained as ( ) aBAK ddlg lg +=∆ ; ( ) m/1 21 DRA −= ; mB 1= (2) Similar to the previous measurements for the scattered S- data [17], a probabilistic modeling for considering the scattered test da/d -∆K data under ∆K following lognormal distribution as ( ) aBAK ddlg lg avavav +=∆ ; ( ) aBAK ddlg lg rms rms rms +=∆ ; ( ) aBAK CPCPCP ddlg lg − − − +=∆ ; ( )[ ] rmss1 av 1 AntZAA CP CP −+−= −− ; ( )[ ] rmss1 av 1 BntZBB CP CP −+−= −− (3) where ZP is the percentage of the standard normal distribution at a probability of P; t1-C(ns-2) is the t-distribution function at a significance of 1-C with degree-of-freedom of ns-2 and ns is number of specimens; Aav、Bav、Arms and Brms are material constants, which should be evaluated using the maximum likelihood function of lg∆K following normal distribution in the space of test da/d i-∆Ki data (i=1, 2, …, nd) below ( )rmsrmsavav ,,, BABAL

Shape memory alloy as the high damping material has caught quite a number of attentions, especial TiNi-based shape memory alloys [2].
In this state, the internal friction of specimen derives from the glide of grains and defects under applied stress.

Rice husk is a by-product in the process of obtaining rice grain.
Boletín del Instituto de la Vivienda, mayo 2002, vol.17, number 045.

And the gaps are tiny grain collapse and grinding saw blade.
Intermittent grinding method, the wheel working surface take a grooves with certain widths, depths and numbers.

Fungi have a wealth of esterification enzyme system，the enzyme of it can condense acetic acid and ethanol to ethyl acetate(fermented grains metabolic system).It also directly generate some complex metabolites distilled into wine, and affect the flavor and quality of liquor.[4-5].
Consistent with the metabolites in Czapek medium, but a relatively small number, while only alcohol and acid in the potato medium.