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However due to the limitation number of magnetic induction lines that defect accommodated, magnetic induction line repel each other, therefore, a part of the magnetic induction line will through defects of discontinuous, by-pass defects and back to the workpiece, finally form a leakage magnetic field.
Hairline grain distribution in different depth of different workpiece, shows curve of continuous or intermittent and ranging in length.

The reason is that the number of HA particles and carbon fibers in per unit volume increase and the particle distance decrease in 50 wt% slurries.
It can be seen in Fig.3 that the distribution of HA grains is homogeneous and there is no significant segregation sign of large particles at the bottom and small particles at the top.

High thermal conductivity of Mg alloys may cause excessive grain coarsening during brazing at higher temperatures.
A slight increase in Zn content is aimed at enhancing the disruption of oxide layer on the surface of brazed material, so that the brazing time would be speeded up, number of defects in brazed joint would be reduced and also the joint strength [2, 3] would be increased.

Moisture carries the dissolved hydration products of clinker grains — soluble alkalis and salts, as well as calcium hydroxide, getting once in to the contact area [7].
Moisture Transfer in the System of "Cold Mature Concrete - Hot Hardening Concrete" A number of scientists’ studies [1, 2, 3] showed the presence of moisture migration from the "new" concrete to the "old".

Mechanical alloying [7], with its unique solid-state reaction, has become a well-known process in materials science area due to its ability to fabricate a large number of new families of glassy alloys that are impossible to be obtained by the conventional melting and casting techniques [8].
The corresponding crystalline peaks become obviously broad, presenting that the grain size gradually decreases and the lattice strain increases.

Introduction Duplex stainless steels are called “duplex” because they have a two-phase microstructure consisting of grains of ferrite and austenite stainless steel. 
Acknowledgments This paper was supported by the Technology Innovation Program (Project Number: 10046606) funded by the Ministry of Trade, Industry &Energy (MI, Korea).

In this paper, grinding coal gangue fine to less than 1mm and stimulating their activity [15] by low temperature calcination, then through a large number of laboratory tests to study the properties of cement-coal gangue mixed slurry under different ratio, to analysis the sodium silicate and quick lime admixtures influence on slurry, to develop the cement-coal slurry application in gob grouting. 2 Grouting material tests 2.1 Test materials Coal gangue, which is made of Changjia mountain coal in Tongchuan mining bureau, experiences low temperature calcination, fine grinding machinery and 1mm sieve.
Fly ash powder has characteristics, including fine grain, large specific surface area, high content of floating bead and low density.

The cross section of the machined surface also shows that wire erosion doesn’t affect the bulk material and TiC grains are existent all over the cross section sustaining the electrical conductivity of the composite.
Acknowledgements The funding of the project “Erodierbare Keramik“ by AiF, grant number KF2121001SU8 is gratefully acknowledged.

Some of the programs are:– The National Accelerated Food Production Program (NAFPP) in 1972; Agricultural Development Projects (ADP) in 1975; Operation feed the Nation (OFN) in 1976; Agricultural Credit Guarantee Scheme (ACGS) in 1977; A Guarantee Minimum Price (GMP) in 1977, geared towards fixing floor prices for Nigerian grain crops - sorghum, millet, wheat, cowpea, rice and maize; The Green Revolution in 1980, geared towards self sufficiency in food production and rehabilitation and resuscitation of Nigeria’s cash/export crops and in 1987, the Directorate of Food, Roads and Rural Infrastructure (DFRRI) was created and its focus was the provision of rural infrastructure i.e., road, electricity and water supply as support services for rural economic development [1].
A variable number of bunches is produced annually ranging between 5 and 15 and mature palms in good climates usually yield in the range of 20 - 25 tonnes of bunches per hectare per annum.

Therefore, the spherical LiNi0.5Co0.2Mn0.3O2 cathode materials with uniform grain size can better meet the requirements of lithium ion battery powered cars on the cathode materials for lithium ion batteries.
These results are from large numbers of crystal nucleus on the solution and the precursor particle grows slow, so the particle size of the product becomes smaller and the tap density decreases.