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Both the gate aperture and the distance between gate electrode and CNTs' apex have crucial effect on field enhancement factors of normal-gate structure and under-gate structure.
Carbon nanotube has a unique quasi one-dimensional structure, excellent mechanical properties, electrical properties, chemical stability and thermal stability.
Moreover, the CNTs emitter has many unique properties such as great aspect ratio, small work function and high conductivity.
Different geometric parameters such as the position of gate and gate aperture affect the field emission properties, including field enhancement factor, emission current density and threshold voltage, which is investigated in this paper.
The gate electrode's position and gate aperture's effects on CNTs' field enhancement properties were analyzed.

Introduction The need for construction materials that possess improved fire-resisting properties led professor Joseph Davidovits to the synthesis of new materials which he named geopolymers [1].
These materials have excellent mechanical properties and high resistance to thermal and chemical attack while their synthesis is based on the activation of aluminosilicate materials by an alkali metal hydroxide and an alkali metal salt and their transformation into a three-dimensional inorganic amorphous structure [2].
There is a number of factors that are reported to affect geopolymerisation.
First of all, the SiO2/Al2O3 molar ratio of starting materials is crucial since it causes significant structural differences which determine the final properties of geopolymers.
Probably, when the solution comes close to be saturated in Si, the dissolution reaction of the slag shifts to the left, leaving unreacted material and affecting the microstructure of the geopolymer.

Bone Regenerative Systems: Biomolecules, Cells and Biomaterials Whenever harmed, bones have the uncommon property of endogenous self-repair by recovering new bone without shaping a fibrotic scar that would adjust their mechanical qualities [7].
The most considered osteogenic factors are individuals from the changing development factor-β (TGF-β) superfamily, and basically bone morphogenetic proteins (BMPs) [10].
In spite of the fact that collagen platforms are in essence profoundly hydrated (with over 95% w/v liquid) with feeble mechanical properties for tissue substitution applications [22], the "basic" plastic pressure of the material quickly builds the relative collagen fibrillar thickness (to over 10% in weight) by evacuating the overabundance of liquid [23].
[9] Katagiri, W., et al., Novel cell-free regeneration of bone using stem cell-derived growth factors.
Growth Factors, 2010. 28(5): p. 306-17

As soon as the excellent properties of hardness and wear resistance were verified, it was named widia (“wie diamond”, like diamond) [3].
Among the different sintering techniques, the traditional ones have the disadvantage of preparing bulks, of not being efficient for pores elimination, and of promoting grain growth; hence, the mechanical properties may be affected by the sintering process used.
Factors Effect Std.
Factors Effect Std.
Factors Effect Std.

However, the porous charateristics of the concrete materials easily lead to ions erosion, which is one of the factors affecting concrete durability.
The erosion of concrete and mortar causes the changes to its mechanical properties and therefore phenomena of erosion damage occur.
So, the macro-properties and microstructures of different concretes were investigated in this paper.
In this study, the superfine slag was selected to improve the concrete’s performance, and the properties of slag is shown in Table 2.
The more slag mixed concrete,the fewer internal erosion factors there are,and then the concrete has better corrosion resistance.

This conforms to our previous studies which revealed the antimicrobial properties of denture PMMA resin containing vanillin on respiratory pathogens and oral yeast.
Nonetheless, it is not thought to be an ideal material due to its minor physical and mechanical properties [17].
It occurs by many factors such as an entrap air during mixing, the presence of residual monomer, monomer contraction during the polymerization, and monomer vaporization with exothermic reaction.
The presence of porosities can affect physical, appearance and sanitized properties of a processed denture base.
Oral malodor or halitosis can occur from the exogenous factors and endogenous factors.

And the factors influencing on the mineral concentration such as milling time and solid/liquid mass ratio were investigated.
Except the property that mineral elements in maifan-stone were soluble, maifan-stone has another property that it can absorb contamination such as heavy metal ions, fluorin ion, residual chlorine and some organic materials in water because its porous structure.
By this property, maifan-stone may be applied to feed, to deodorize in refrigerators, to refresh vegetable and marine lives.
Table 6 The relation of solid-liquid ratio and grain size distribution Table 7 The effect of different solid-liquid ratio on concentration of the representative mineral elements 3.3 The effect of filling quantity of ball mill and grinding media on the extraction of mineral elements.The effect of total filling quantity of the ball mill with different diameter and their proportion was essential in affecting the efficiency of grinding.
The proportional relations of ball mill and total filling quantity of grinding media affected the efficiency of grinding, which related to the extraction of mineral elements.

A 23 design of experiment (DOE) was used to deposit bond coat and top coat powders with three controlled factors of input current, powder feed rate and stand-off-distance.
Coating quality was determined by its porosity content and hardness properties [7, 8].
Major problems in plasma sprayed coatings were presence of open pores, closed pores and micro-cracks which reduced mechanical properties of coating such as elastic modulus, micro-hardness and bonding strength [18].
A gradient of hardness properties across the substrate signifies its relationship with coating mechanical properties.
Presence of open pores, closed pores and micro-cracks reduced coating hardness along with reduced mechanical properties of coating such as elastic modulus, micro-hardness and bonding strength [18].

Possibilities of a volumetric flow rate modification [1] and the medium temperature change, allow to determine sensors curves and basic dynamic properties.
The tasks of mechanical subassemblies can be described in several points: fixation of temperature sensors and the heater, heat losses minimization (with the aid of seals), providing direct (without disturbances) interaction stream of the medium at a sensor probe, minimization of an influence of environmental factors on the sensor indications.
Results correctness depends on factors such as: a sampling characteristic, an exactitude of used dividend, an instrument error.
Analysis of the graph shows temperature values recorded by sensors, regarding to the established input function, constitute a base used to determined characteristic sensor properties.
To assigned properties belongs: a repeatability, a hysteresis, dynamic characteristics etc.

While in the process of synthetizing cordierite powders, the sol-gel procedures are affected by a number of factors.
When the fraction of water was less than r=4, the main factor affecting the rate of gelatinizing was the speed of TEOS hydrolysis.
When the fraction of water was higher than r=4, the main factor affecting the rate of gelatinizing became the rate of polymerization.
This reduces the hydrophilic properties of the surfactant which weakens its ability to form the W/O micro-emulsion system [9].
Dielectric properties under different frequency Fig.8.