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It was found that the addition of oleic acid does not significantly alter the structural or magnetic properties of the synthesized composite.
Magnetic properties were measured using a vibrating sample magnetometer, as described in [28].
This change manifested in greatly improved adsorption properties of the composites synthesized with OA.
Szymczykiewicz, Synthesis and Electrochemical Properties of Fe₃O₄/C Nanocomposites for Symmetric Supercapacitors, Appl.
A review of the structure, properties and types of amyloid, and a proposed staining mechanism for Congo red staining, Biotech.

Plumtree Department of Mechanical and Mechatronics Engineering, University of Waterloo, Ontario, Canada.
The initial surface properties are changed and the increase in surface roughness with its accompanying local stress concentration tends to accelerate the crack nucleation stage [2], countering the work hardening.
The induced compressive residual stresses and work hardening are two essential factors which improve the fatigue behaviour of the shot peened steel.
The mechanical properties of the steels are given in Table I below.
Mechanical Properties Steel Yield Strength (MPa) Tensile Strength (MPa) Elongation (%) Reduction of Area (%) AISI 1141 576 921 16 39 AISI 1151 945 1007 14 31 Powder Forged (P.F.) 593 924 16 30 AISI 1070 552 993 15 27 Following their respective heat treatments, all the steels were machined with a gage width of 11.5 mm, thickness 1.8mm and length 180 mm and a generous shoulder radius of 20mm at the gripped ends.

The effect of undissolved ferrite amount on bending fatigue properties and failure mechanism were studied by using 42CrMo steel with subcritical quenching process The amount of undissolved ferrite were 0%, 10% and 15%, respectively.
Introduction Microstructure is one of important factors which affect the bending fatigue properties and life.
Some researchers studied the effect of undissolved ferrite on contact fatigue properties [3,4].
The effects of undissolved ferrite on bending fatigue properties and life were discussed.
In order to understand the effect of undissolved ferrite on the bending fatigue properties and failure mechanism, the bending fatigue tests were carried out on 12-1type bending fatigue tester.

Study on the reasonable sand ratio in this state, research the effect of different rate of sand on the workability of concrete, and test the strength and deformation properties of concrete.
Sand ratio is an important parameter for concrete mix designing, because many factors that affect sand ratio, it is not possible to use one method to determine an accurate and reasonable sand ratio.
Different from the soil in the river sand, powder in manufactured sand can improve the performance of the fresh concrete and hardened concrete properties [4-8].
Concrete workability is poor, it is not easy to form the ideal aggregate interlocking structure, so that the compactness of concrete after hardening decreases, and affect the strength development of concrete and high sand ratio destroy the mechanical bite force among coarse aggregate [10].
Experimental research on the properties of sand impact on the concrete workability.

Introduction A large number of studies have shown that thermal error is one of the main factors influencing the machining accuracy of the high-speed machine tools [1].
There are many complex factors contributing to thermal errors of mechanical processing, so in this way thermal errors show evident grey property [4].
The aim is to calculate relational grade of different factors to finds out key influencing factors in the system.
For two different sequences Xi(m) and Xj(m) of factors i and j, their relational grade are r0i and r0j, respectively .
The results are listed as follows: r01= 0.65060, r02= 0.65245, r03= 0.65348, r04= 0.65396 r05=0.65380, r06= 0.65306, r07= 0.65204, r08=0.65132 So the relational grade order can be got as follows: r04＞r05＞r03＞r06＞r02＞r07＞r08＞r01 It can be concluded that factor 4 has the greatest effect on the reference sequence, and the order of significance of the effects of the 8 factors on the reference sequence is described as factor 4＞factor 5＞factor 3＞factor 6＞factor 2＞factor 7＞factor 8＞factor 1.

The fiber cloth has good tensile properties and toughness which plays a role in strengthening the concrete [9-11].
The Main Factors which Play a Major Role in the Control of the Cracks for the Concrete Structure For ordinary concrete structures, the factors that play a controlling role in structural fractures are the cohesive force between the reinforcement and the concrete.
The main factors influencing this cohesive force include: Joint Surface Treatment Method.
The adhesive force is not only related to the physical properties of the binder, but also with the concrete treatment method of the old concrete, the construction method of the adhesive and the selection for high quality adhesive.
Without considering other factors, the crack width will be 38% of the principle, the cracks are denser and finer, meeting the engineering requirements.

Two types of internal interfaces with fundamentally different properties exist in the nanomaterial: the grain boundaries between the nanocrystallites and the interfaces between the agglomerates.
On the other hand, the so called triple product P=sδDgb was determined in the regime В-В (s is the segregation factor).
The method of calculation of the segregation factor s for Ag in FeNi is illustrated (c).
As a result, the temperature dependence of the segregation factor s can be derived (Fig. 3c).
In spite of the fact that the hypothesis of non-equilibrium GBs is quite plausible and capable to rationalize many unusual mechanical and functional properties of ultrafine grained materials obtained by severe plastic deformation, its unequivocal experimental proof is still lacking.

This affects both the properties of the particle in isolation and its interaction with other materials.
About eight articles in this issue deal with these special properties of nanostructured materials.
Abou Zied have studied the dependence of crystallite size on the mechanical properties of nanocrystalline Al-Mg-Mn alloys synthesized by ball milling.
Once particles become small enough they start to exhibit quantum mechanical behaviour.
Arockia Jayalatha have estimated the interaction parameter and structure factor of specific drug delivering fluorocarbon nanosystems.

The vulnerable location of solidification cracking is confined in the [100] dendrite growth region on the right side of the weld pool because of increasing metallurgical contributing factors of severe stray grain formation, centerline grain boundary formation and coarse dendrite size.
The useful model is also applicable for other single-crystal superalloys with similar metallurgical properties.
Introduction γˊ and γˊˊ precipitation-strengthened nickel-based superalloys are widely used in aerospace components because of advantageous high-temperature mechanical properties and thermal stability.
The objective of this work is therefore to elucidate the effect of welding conditions (laser power, welding speed and welding configuration) on stray grain formation, dendrite selection, columnar/equiaxed transition, dendrite growth crystallography to evaluate the weldability with metallurgical contributing factors.
Nickel-based single-crystal superalloy CMSX-4 was used with chemical compositionNi-9Co-6.5Cr-5.6Al-1Ti-6W-6.5Ta-3Re-0.6Mo-0.1Hf (in wt%).The material properties are available in the literature [22-25].

Changing modes of sintering produces a predetermined surface roughness which is an important factor in adhesion of adjacent layers.
For research cobalt chrome molybdenum powder DSK-F75 was selected, which is used in mechanical engineering to manufacture products of high-temperature assignment.
The alloy has a good combination of mechanical properties such as plasticity limit of 0.65 кН/mm2, density 8,4 g/cm3 combined with moderate hardness.
Characteristic curves, constructed according to this formula, revealed the most significant parameters, affecting the roughness of the sintered layer, as well as the limits of its changes due to technological modes of sintering.
Yakovlev, Mechanical activation of metal powders effect on quality of surface sintered layer, Metal Treatment. 4(2012) 108-110