Search results

Table1 Parameters of different simples Sample number Fe3+:Fe2+ (mol rate) TEOS (mL) rotate speed ( r/min) SiO2:Fe3O4 (mass rate) note 1 2:1.2 0 200 0 pure Fe3O4 2 2:1.2 0 300 0 pure Fe3O4 3 2:1.2 0 200 0 pure Fe3O4 4 2:1.2 8 200 56.3% Fe3O4@SiO2 5 2:1.2 12 200 84.5.% Fe3O4@SiO2 6 2:1.2 14 200 98.5% Fe3O4@SiO2 7 2:1.2 16 200 112.6% Fe3O4@SiO2 8 2:1.2 16 300 112.6% Fe3O4@SiO2 Experimental Procedure Iron chloride hexahydrate (FeCl3·6H2O) and iron dichloride tetrahydrate (FeCl2·4H2O) were taken as raw materials in chemical-coprecipitation process to produce Fe3O4, and ammonium hydroxide (NH4·OH) taken as precipitator, and ethyl orthosilicate (TEOS, volume concentration is 28%) was taken as source of SiO2 during Sol-Gel process.
Figure5 The coercivity of magnetic materials and its dependence on the grain size [9] Summary (1) The average sizes of Fe3O4 and SiO2@Fe3O4 nano-magnetic particle produced were 10 ~ 20 nm, which below its critical dimension of superparamagnetism; (2) XRD results showed that amorphism SiO2 coexisted with Fe3O4.

It will attract a large number of different levels of tourists, and promote the development of Lianping county tourism economy.
Raising pig Planting grass Raising chicken Green Vegetable Base Fish farming Fig. 1 Ecological agricultural chain Grain Fish Fruit Vegetable Fuel Pigs Biogas Fig. 3 Ecological landscape chain Fig. 2 Ecological energy chain Function division in the tourism area According to the characteristics of resource in the tourism area, it is constructed to “a shaft four area” of integral space structure.

Numbers in Fig. 2 is the sum of both metal ion concentration.
Although the grain sizes were different each other, all the Bi-Te films of Bi2Te3 crystal structure exhibited the polycrystalline morphology.

Introduction Under the thought "the network is the computer"[1], cloud computing put a large number of compute, storage, software, and other resources together to build a huge scale shared virtual IT resources pool.
Reference [8] achieved a data-level and task-level AES parallelism on a fine-grained many-core system.

The dry material was disintegrated, and milled in a model TIGER hammers mill, and grain size classified in ABNT no. 80 sieve.
After collected, the Clay was dried in natural environment, handles crumble and milled in a Tiger model hammers mill until pass trough number 80 sieve.

Finally, the terms lapping and fine polishing are very known, however its concept is more known in qualitative terms, that is evident for the fact that industries still continue to specify like rustic, smooth, cloudy, shining or with an adimensional number the finished polished surface.
It showed that the abrasive sandpaper grains of mesh 600 are excessively harder than the surface of the polycarbonate.

We can study them, such as analyzing grains' size, appearance and distribution.
The diagnosis of polluted hydraulic oil A large number of practical experience and theoretical studies show that, many kinds of factors cause the hydraulic oil pollution, but the factors is usually around hydraulic oil.

Compared to casting technology, precision forging of semimonocoque is superior for economy of material and energy, less machining process, lower production cost, continuous distribution of metal streamline, grain refinement, significant higher performance and longer service life.
For complicated forge pieces, the number of finite elements is about at least 15 times that of its volume (cm3) in order to get good simulation effect. 2) Equivalent stress-strain distribution during forming process is analyzed and effect of forging shape on the flow law of metal materials is discussed.

Ongoing work is presently done for accounting different numbers (1 to 6) of substitutional foreign atoms, situated in the nearest vicinity of the trap, influencing the depth of the trap and defining the sort of the traps.
Hodgson, Grain size effect on the warm deformation behavior of a Ti-IF steel, Mater.

The risk of brittleness under the influence of molten metal is well established, but description of the phenomena is still difficult because of inadequate understanding of its mechanisms and large number of parameters which may be responsible for the LME effect.
Main variables which may be responsible for LME effect are [8-11]: crack propagation rate, deformation during cracking, chemical composition of molten metal (beside the change of physicochemical properties like surface energy and mutual solubility, molten metal influences the effects at the end of a crack, decreases the critical intensity of cracking stress and changes its micromechnisms; additionally the alloying elements of metallizing bath can increase and decrease the brittleness), chemical composition and structure of solid metal, wettability, surface energy and grain boundary energy.