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Power output by MFCs could be affected by a number of factors, including mechanical engineering of the reactor configuration, chemical/biological processes and the operational conditions [5-8].
Among these factors, anodic pH has also been suggested to be crucial to MFC performance because microbial metabolic activity is generally controlled by the growing pH conditions.
Data shown in Fig. 2 indicate that altering anodic pH by two units allowed the anode potential to change ~ 0.376 V (see data between time T1 and T2 in Fig. 2), much larger than the theoretical value of 0.118 V, implying that anodic pH affects the electrochemical performance mainly through altering the catalytic activity of the anode-attached biofilm rather than through changing the thermodynamic properties of the microbial anode.
The experimental results presented herein suggest that controlling anodic medium close to neutral pH condition would allow the electroactive biofilm to function better, consistent with some experimental evidences which support that most anode-attached bacteria favour the alkaline pH conditions [9-11] Conclusions Anodic pH condition is shown to be an important chemical parameter for the electrochemical performance of the microbial anode, which in turn affects the overall MFC performance.

But there are two main factors (difficulties in processing and monitoring the integrity of materials [1]) preventing them from achieving further development.
First of all, since OF material properties are similar to reinforcing fibers of composite materials, they can be easily embedded in arbitrary shapes.
Thus embedded OF will alter the stress and strain in the vicinity of the embedded OF, destroy the materials’ integrality and continuity in some way, and even may degrade mechanical properties of composite materials [3,4].
Lee et al [2] evaluated the effects of embedded OF (φ125μm) on the tensile properties of unidirectional and cross-ply E glass-exposy system, and their results also showed no significant difference in the tensile strength.
This can be attributed to manufacturing variations. 2) Only when 3 OF are embedded in the bending sample, it has abou18% reduction. 3) Different embedded layers have different influence (Sample S3-2/3 affected most).

The effect of different processing parameters including dispersant type and amount, mixer type and mixing time, and different binder levels is investigated with respect to physical and mechanical properties.
All those interfacial properties affect macro-level material behaviour.
Retaining a high aspect ratio of the nanofibers, enabling the efficient transfer of the load to the nanofiber, is very critical toward an improvement of the mechanical properties of nano composites [28].
Endo, Mechanical and thermal properties of vapour-grown carbon nanofiber and polycarbonate sheet, Mat.Lett. 59 20053514-3520
Schulte, Influence of different carbon nanotubes on the mechanical properties of epoxy matrix composites- A comparative study, Comp.

One of majors problems associated with polymeric composites reinforced with vegetable fibers is the presence of moisture inside them,which often weakens the fiber-matrix interface interaction affecting its mechanical properties,which can accelerate aging.
Since that water strongly affect mechanical properties of these composites, with particular reference to caroá fiber reinforced composites.
R.Nutt Influence of hygrothermal environment on thermal and mechanical properties of carbon fiber/fiber glass hybrid composites.
Verdu, Factors governing water absorption by composite matrices.
Czigány, A study of water absorption and mechanical properties of glass fiber/polyester composite pipes – Effects of specimen geometry and preparation.

Both the physical and chemical properties of materials, that are very small in dimension, is very much different from those which are made in bulk with the same material.
In this case, scaffold construct fills the space to provide cell anchorage sites and serves as structural cues, bioactive agents, and/or growth factors.
Therefore, the mechanical properties of the scaffold material are tested to withstand in vivo stress and loading (Hutmacher et al., 2000, Hutmacher et al., 2007).
However, the core structure of dendrimers encodes the physical and biological properties and is also responsible for inducing the polymerization sequence.
Making a tooth: growth factors, transcription factors, and stem cells. 

Concentration of the nitrogen substances also affected the visible light adsorption of the TiO2.
Comparison between WG400 and NF400 also implies that the additional ammonia salt did not affect the crystal structure of TiO2 in the grinding process.
Considering our results, these may indicate the grinding process in dry or wet was a crucial factor governing the crystal structure of the TiO2 prepared.
In the ammonia water system the solution pH was 14.0, therefore, the pH was not a crucial factor when nitrogen-doped TiO2 was prepared.
Photoelectrochemical and optical properties of nitrogen doped titanium dioxide films prepared by reactive DC magnetron sputtering[J].

In terms of minimising heat input and optimising mechanical properties, the faster speeds were then selected for both processes.
Hybrid welds can possess an advantage over autogenous welds as the associated filler addition can be used to improve the mechanical properties of the weld metal.
As Fig. 6 shows, the weld metal hardness values towards the weld top and in the mid-thickness of the hybrid weld were very similar, indicating that the non-uniform weld metal composition, as shown previously in Fig. 4, was not likely to significantly affect mechanical properties measured at different thickness positions.
Tensile properties of Yb-fibre laser and hybrid Yb-fibre laser-MIG welds.
• Use of novel filler additions can achieve grain refinement, and ongoing work is anticipated to lead to a corresponding improvement in mechanical properties.

Carvalho1 1 INETI, Department of Materials and Production Technologies, Azinhaga dos Lameiros, 1649-038 Lisbon - Portugal Keywords: Titanium Aluminides, �-TiAl alloys, Reactive Hot Isostatic Pressing (RHIP), Microstructures, Mechanical Properties.
Introduction The �-TiAl based alloys exhibit numerous attractive properties for high temperature structural applications in aerospace and automobile industries.
Extensive investigations have been undertaken on the processing methods for the �-TiAl alloys with additional alloying elements to control and optimize the mechanical properties and the corrosion behavior [1].
In the present work 1(at%)Ag additions and variation of parameters such as original Al powder size and RHIP holding time were introduced in RHIP processing of Ti-48(at%)Al alloys, in order to assess the effect on microstructure and properties.
[10] Material Properties Handbook - Titanium Alloys, ASM Intern., Materials Park (1994), p. 1011

Introduction Copper matrix composites have the potential for use as wear resistant and heat resistant materials; brush and torch nozzle materials and for applications in electrical sliding contacts such as those in homopolar machines and railway overhead current collector systems where high electrical/thermal conductivity and good wear resistant properties are needed [1, 2].
Several factors that affect machinability are work-piece related (mechanical properties, microstructure), tool related (strength, geometry), and machine related (accuracy, force requirements, surface roughness, chip morphology) [10].
The surface qualities of a workpiece are essential not only for dimensional accuracy and aesthetics, but also for other physical and chemical properties such as fracture toughness, corrosion resistance, and fatigue life.
Feed rate was an influential factor in determining sampling length.
Looking at the parameters affecting the surface roughness in the machining of composite materials it is possible to say that cutting parameters have a significant effect.

Effect of Phenylene Diamine Antioxidant on Physico-Chemical Properties of Methyl Grafted Natural Rubber Polymer Electrolytes A.F.
The consequences of degraded MG30 is mainly devour the mechanical properties such as hardened, loss it elasticity and favourably to cracks.
The high similarity in chemical properties of both systems is maybe due to the undetected tiny amount of 0.5 wt.% 6PPD.
Chen, Porous polymer electrolytes with high ionic conductivity and good mechanical property for rechargeable batteries, J.
Noor, A method based on impedance spectroscopy to determine transport properties of polymer electrolytes.