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Cellulose nano fibers (CNF) is a new type of filler which shows high efficiency in improving the physical and mechanical properties of starch-based biocomposite.
Other advantages are good mechanical properties, low density, low cost and abundant in earth.
This is indicated by the hydroxyl bond formation between cellulose and starch resulting in improvement of mechanical properties [11].
This factor affected in decreasing mechanical properties.
Zaritzky, Mechanical and thermal properties of yam starch films.

Guo and Liu [9] investigated material properties of hardened AISI 52100 steel and demonstrated that hardness greatly influences the material properties accounting for high variation in flow stress properties.
Table 1 and Table 2 show the chemical composition and mechanical properties of AISI 440C steel respectively.
The factors and factor levels are summarized in Table 3.
Additionally, plots of significant factors corresponding to ANOVA analysis were constructed.
These plots provide a more in-depth analysis of the significant factors related to the surface roughness.

Effect of Concentrated Alkali Treatment on the Properties of Naturally Colored Brown Cotton Li Chen1,a,Yusen Liu 1,Weiguo Sun1,Xiaoyan Zhou1 1School of Textile & Materials，Xi’an Polytechnic University，Xi’an，People’s Republic of China afychenli@yahoo.com.cn Keywords：naturally colored cotton,crystallinity,morphology,mechanical properties,color.
The naturally colored cotton fiber was treated by sodium hydroxide solution with different concentrations and temperatures.The surface morphology,crystalline structure, mechanical properties and color feature value of fiber after treatment were tested by SEM,XRD,electronic single fiber strength tester and Computer Color Matching meter.The results show that the longitudinal convolutions of the naturally colored cotton fiber treated by concentrated sodium hydroxide decreased or disappeared,and the fiber became nearly cylindrical or cylindrical.The crystallinity of fiber after treatment decreased,part of the celluloseⅠ changed into celluloseⅡ．The breaking strength and breaking elongation of fiber after treatment increased.The total color differences（ΔE） and value a*of fiber after treatment increased，to the contrary，value L* and value b* decreased，which leaded to that the color of fiber treated by alkali became darker．In addition,the treatment temperature had larger influence on the properties
colored cotton and ordinary white cotton are very similar in chemical composition,structure and other properties.But there are still many differences between them.So it is necessary to explore the effect of concentrated sodium hydroxide on the properties of naturally colored cotton.The changes of the performance of naturally colored cotton treated by concentrated sodium hydroxide were analyzed and obtained through a large number of experiments.These results can provide a theoretical reference for the formulation of related technology in naturally colored cotton treatment process with sodium hydroxide.
Mechanical Properties of Fiber Fiber specimens were conditioned for 24 hours at 20°C and 65% relative humidity prior to testing.The samples were tested according to GB/T14337-93 standard reference.The fiber breaking strength and breaking elongation were measured by YG001 electronic single fiber strength tester,operating at a 10mm Clamping distance,a 0.1cN pretension,and a 10mm/min rate of decline.
Mechanical Properties of Fiber （a）Breaking strength of naturally colored cotton fiber（b）Breaking elongation of naturally colored cotton fiber Fig.3 Mechanical Properties of naturally colored cotton fiber before and after treated by concentrated Sodium hydroxide Fig.3 shows that,the breaking strength and elongation of fiber after treatment increased,and the breaking strength and elongation of fiber treated at 20℃ were greater than that of fiber treated at 60℃.The results of fiber crystallinity show that,the crystallinity of fiber treated by concentrated Sodium hydroxide decreased.The crystallinity affects the strength of fiber.Usually,the lower the crystallinity value is,the lower the strength value of fiber is.But the strength of fiber also are impacted by the orientation degree of fiber and other factors.Concentrated Sodium hydroxide solution could cause irreversibly anisotropic swelling of naturally colored cotton fiber,the diameter of fiber increased and the longitudinal length

This poses several material and processing challenges to ensure that the components have metallurgical stability and the required mechanical properties in the high temperature environment.
Severe plastic deformation is used to promote recrystallisation in order to refine the grain size and improve strength and toughness properties.
The arduous conditions of mechanical, thermal and corrosive loading lead to several materials and processing challenges where mechanical properties and metallurgical stability must be maintained in a service environment where temperatures are increasing.
Recrystallisation processes are affected by temperature, strain, strain rate and local composition, so that it is necessary to be able to identify regions where recrystallisation is complete, partial or not occurring through a forging so that regions of spatially varying structures and properties can be identified.
Scharning, Axisymmetric Compression Test and Hot Working Properties of Alloys, Mater Sci Tech-Lond. 17(8) (2001) 995-1004

Introduction The improvement of the physical and mechanical properties of concrete by using nanosized materials with various functional properties plays an important role in the targeted regulation of hydration and structure formation processes of cement composites [1-8].
One of these factors is the use of silica nanostructures with abnormally high surface energy and a powerful dispersion effect [17, 18].
The same factors are very important in the formation of the strength structure of cement stone and concrete.
Therefore, it is natural to believe that the cement stone porosity is one of the main structural factors that determine the strength and other technical properties [19].
Brusser, Structure and Properties of Cement Concretes, Moscow, 1979

Epoxy resin possesses excellent adhesion, wear resistance, mechanical properties, electrical insulation, chemical stability, resistance to high and low temperature, as well low shrinkage.
Temperature / ˚C heating rate / (K · min -1) Fig.2 Fitting beelines between temperatures-heating speeds Changes in mechanical properties of EP were examined by changing the m (nano-SiO2): m (toughening) ratio.
Fig.3 FT-IR curves of cured EP adhesives In the traditional model of crazing, two key factors affecting the results, the generation of crazes and the timely suspension of crazing, prevent macro-cracking.
The mechanisms responsible for adhesion were highly complex because they depended upon the simultaneous action of different factors.
In the present study, one of the most important factors for adhesion improvement was new polar functional group.

The Composition of Slope Deformation Statistical Regression Model Slope deformation was mainly affected by the material bulk density and mechanical properties of the slope itself.
On this basis, through the qualitative and quantitative analysis of high slope deformation monitoring data, aging, rainfall and temperature were the main external factors affecting the high slope deformation.
When the present factor became not significant as the introduction of factors, it would be removed out of the regression equation.
Slope Deformation Impact Analysis of Each Component. (1) Aging component Aging was the main external factor affecting the high slope F59 fault vertical displacement.
It further illustrated aging was the main factor to affect high slope deformation.

Twelve samples were used for testing the mechanical properties.
The archwire resistance to attachment into bracket slots and intensity of the force delivered to the teeth on unloading are mechanical factor that affect the tooth movement.
Mechanical properties and clinical applications of orthodontic wire.
Physical properties of root cementum: Part 18.
Physical properties of root cementum: Part 16.

The induced microstructure variations in Grade T22 Cr-Mo steel, including the correlations of changes in physical (microstructure) and mechanical (hardness data) properties during annealing have been measured.
Steel properties are both a function of composition and thermal and mechanical processing.
Therefore, the properties of metals are involved with the electron gas properties.
The properties of the metal depends on two essential factors as valence and conduction bands, by the spacing between the valence and conduction bands and the relative location of Fermi energy level [3].
Grade T22 steel received simulated high temperature heat treatment time by using Larson Miller expression results in the best combination of mechanical properties and microstructure evolution.

The three-factor quadratic general rotary unitized optimization[1] design was used to analyze the three parameters mostly affecting the degumming and bleaching process: the NaOH concentration, the H2O2 dosages and the processing time.
Optimum configuration of the three parameters mostly affecting the degumming and bleaching apocynum venetum was explored in order to provide some theoretical basis for production and application.
And the three factors are NaOH concentration, H2O2 dosages and processing time.
Apocynum venetum single fiber has excellent physical properties: breaking tenacity is 12.83cN / dtex, breaking elongation is 2.96%; and whiteness value is 49.60.
Apocynum venetum fiber has excellent moisture absorption and desorption properties, and its moisture regain could be 6.98%