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K represents the number of factors or variables being examined in experiment.
Five important variables as essential factors that extensively affect polymer properties were selected.
The results show different formulation of MIP pre-polymerization could extensively change MIP properties.
Furthermore, the results showed that, in most cases, interactions exist between key important factors.
The obtained results showed the utility of the chemometric approach to determine factors with significant effect on response as well as interactions between the key important factors.

However, there are salient parameters that affecting the compressive strength of geopolymer.
Introduction Fly ash has been used to replace cement in the concrete industry for several years because it contributes beneficial properties to concrete [1], especially with respect to its high compressive strength compared to cement.
Another factors that influence the compressive strength of geopolymer are the fly ash/alkaline activator ratio and Na2SiO3/NaOH ratio.
In this manner, the properties of the geopolymers produced under several different conditions were studied.
Davidovits, in: Properties of Geopolymer Cements, First International Conference on Alkaline Cements and Concretes (1994), p. 131-149

.-% gives excellent magnetic properties.
The improvement of the magnetic properties stays in contrast with the lack of ductility of these alloys, making their thermo-mechanical processing difficult.
Introduction The improvement on the magnetic properties of iron by silicon addition up to 6.5 wt.-% have already been reported, nevertheless the mechanical processing high silicon steels becomes difficult because of different factors: hardening effects because silicon atoms act as substitutional solid solution on iron atoms.
For the samples of steel B deformed 35 and 75% of reduction and held at temperatures of 900 and 1000°C during 10 seconds a small fraction of static recrystallised grains were found, the nuclei were characterised as regions with high Image Quality factor (showing a sharper Kikuchi pattern).
Dieter: Mechanical Metallurgy (McGraw-Hill Book Company, London, 1988)

Theory The low binding capacity and instability of properties are the deterrent factors of using the lignin-containing substances (in particular LST) as binders in the foundry.
Since the binding capacity of the material is determined by the strength of the standard of "eight samples", then to understand the possible ways of its increase it is necessary to conduct a complete analysis of the factors, that can affect this indicator at all stages of the process.
While specifying the purpose in a part of regarding changes of LST properties, it is necessary to focus attention on the importance of methods of modification.
This representation of the mechanism of structure formation of LST leads to the understanding, that the activities carried out to stabilize the properties of LST will affect the improvement of their binding capacity, which, in turn, theoretically creates the prerequisites for expanding the application of LST in casting processes.
Spassky, Rising of the properties of mixtures by chemical activation of lignosulfonates: Foundry, 7 (1978) 19-21

Study on Tool Life and Tool Wear Mechanisms in Dry Cutting Pure Iron KONG Jinxing1, 2 a, LI Liang1, b , XU Dongming2,c , HE Ning1, d 1College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, 210016, P.R.China 2Institute of Mechanical Manufacturing Technology, China Academy of Engineering Physics, Mianyang, Sichuan, 621900, P.R.China akjxmc106@163.com, bliliang@nuaa.edu.cn, cxu_dong_ming@163.com, bdrnhe@nuaa.edu.cn Keywords: pure iron, dry cutting, tool life, tool wear mechanisms Abstract.
Tian Wensheng [3] was investigated the cutting properties of pure iron.
The results showed that tool rake face was the main affecting factors for pure iron chip deformation and cutting force.
The factors of mechanical stress, thermal stress, tool surface tissue defects and adherence, etc, would lead to layer exfoliate or massive spalling on the tool face.

High wear resistance, less built-up edge formation, better surface finish and good adhesion are considered to be the most important properties for a good tool performance.
Therefore, it is necessary to have an experimental study for understanding and assessment of the above mentioned coating properties for different coating materials during high-speed machining processes.
The speed of spindle rotation, feed per tooth, and axial depth of cut are considered as the affecting factors.
El-Wardany et al. [10] dealt with an experimental and analytical investigation into the different factors which influence the temperature distribution on ceramic tool rake face during machining of difficult-to-cut materials.
Tool wear is a significant factor affecting the machined surface quality.

Damaged components can be repaired or coated in order to enhance their properties and increase their lifespan.
The quality of the deposited material was studied through metallographic analysis and an Acicular Ferrite structure was observed, ensuring good mechanical properties.
Sathiya, Microstructure and mechanical properties of Gas tungsten arc welded High Strength Low Alloy (15CDV6) steel joints, Mater.
Ceschini, Influence of Interlayer Forced Air Cooling on Microstructure and Mechanical Properties of Wire Arc Additively Manufactured 304L Austenitic Stainless Steel, J. 
Kotousov, A study on the relationship between microstructure and mechanical properties of acicular ferrite and upper bainite, Mater.

Slag powder contents affects on 28d compressive strength of C40 concrete Fig.2.
Influence of slag powder on drying shrinkage property of concrete Shrinkage is an important reason of concrete crack, and it is also one key factor that affects the concrete structure quality decline.
Fig.5.Slag powder contents affects on C40 concrete seepage height Fig.4.
Slag powder instead of 50% cement, the various performance the properties are relatively high.
[5]Eva Vejmelková,Milena Pavlíková,Zbynek Ker ner,etal.High performance concrete containing lower slag amount：A complex view of mechanical and durability properties[J].Construction and Building Materials，2009(23):2237-2245.

Sudheer [5] demonstrated the fabrication of cobalt-chromium cardiovascular stent by modulated pulsed Nd:YAG laser and he intended to use it to improve the cutting quality and reduce heat-affected zone (HAZ).
HAZ can modify the metallurgical properties and affect the mechanical properties of the stent material and lead to micro cracks and embrittlement to the material.
Moreover, the concentricity between the tube clamp, the rotating table and the tube was an important factor affecting the processing precision.
The nitinol has great biocompatible, shape-memory and superelastic property which is choose as a self-expanding stent material in the commercial biliary stent market.
A less heat affected zone could be achieved by using nitrogen instead of air as the assisting gas due to weak oxidation effect.

Properties of rotor-stator interface directly affect motor’s conversion efficiency, service life, running noise, and drive stability, etc.
Friction coefficient is the key parameter which affects the output characteristics of motor.
But it hardly affected the no-load speed.
Micromachined traveling wave motors: Three-dimensional mechanical optimization and miniaturization limits evaluation.
Practical consideration of shear strain correction factor and Rayleighdamping in models of piezoelectric transducers.