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The packing density of the whole composition is in direct relation with their number and ratio [4].
The growing number of scientific papers dealing with carbon nano-additives is being published nowadays all around the world, confirming its positive effect on the operational properties of construction materials.
The growing number of structural particles with high surface energy makes the whole system thermodynamically unstable.
Based on the data mentioned above, the number of carbon nanotubes in a cubic meter of cement composite is NMWCNT=7x1018, according to the Eq.6: NMWCNT=mCNTm1
Formation of the boundary layer in mineral binder-based materials modified with multilayered carbon nanotubes Graphistrenght TM: (a) - fine-grained concrete, (b) - natural anhydrite The characteristics of these hydration products are as follows: Average length lhsc=7,5×10-6 m; Calcium hydrosilicates diameter dhsc =5×10-6 m; Density of hydration products ρhsc=2400 kgm3.

Fatigue lifetime is measured by a number of cycles that the material can withstand before fatigue damage occurs [3].
The nominal stresses are lower than the yield strength by fatigue process and the development of the fatigue cracks demands a number of cycles to be initiated [4].
The experimental material was not modified or grain refined.
Therefore the number of cycles 107 was taken as the infinite fatigue lifetime.
The relationship between the maximum stress level, S, and the life in the form of the number of fatigue cycles Nf, (S-Nf curves) is given in Fig. 2.

Impaction of composite material takes place due to formation of a thin water-repellent film [7], closely tied with a cement matrix and splitting it into the number of smaller clusters [3].
At higher concentrations, the greater number of specific sites is formed leading to entangled polymeric network formation and noticeable feeding of liquid medium. 2′ 2 1 2′ b) 1 2 а) 1 c) 1 1 2′ 2’ 2 2 d) 2’ 2 f) 2’”” 1 2 e) Fig. 1.
Distribution of the parameters of relative scatter intensity according to the particles size (a, b), relative volume of particles (c, d) and relative number of particles (e, f) in the initial state (1), mechanoactivated state (2) and the state matured after activation during 24 hours (2′) of the solutions Na-CMC with the concentration: a), c), e) – 53.57 g/l; 8.37 mmol/l; b), d), f) – 0.357 g/l; (0.056 mmol/l) Impact of MMA on the phase composition of cement stone.
Judging from the number and intensity of ettringite’s peaks (2.625; 2.19; 2.135; 2.06; 1.67) on the X-ray diffraction pattern of the activated specimen (3.25; 2.625; 2.19; 2.135; 1.95; 1.67) and on the X-ray diffraction pattern of the non-activated specimen, one could make a conclusion that in the non-activated specimen the larger amount of hydrated calcium sulfoaluminate was formed if compared to non-activated one.
Sokolova, Fine Grain Concrete on Mixing Water Activated in Cavitation Permanent Magnet-Type Apparatus, J.

In the metals literature these approaches are referred to as micro-macro models; a term first coined by Rappaz and co-workers to describe models of grain growth in equiaxed dendritic alloys [2].
The model half-arm space is located in a larger domain of the mushy region-the Representative Elementary Volume (REV)-which has a scale of ~10 mm and contain a number of primary dendrite arms or grains.
Assuming that the solid growth in the REV is close to parabolic the modified Fourier number can be estimated as 1m n g 3 4 + +α=α − + (21) When this model is used with the profile back-diffusion model a variable exponent m is calculated with Eq. (12).
This closure requires that a number of model choices be made.
Coarsening is well modeled by enhancing the solute Fourier number via the expression provided in Eq. (21).

Table 1 The ideal grain orientation of five kinds of aluminum alloy drill pipe [5].
Table 3 Equivalent sliding system number (ESSN) and Schmid factor (SF).
It has been reported that the planar anisotropy of aluminum alloy is closely related to the grain structure and crystallographic texture of the alloy, and the crystallographic texture is the main reason for the plane anisotropy [13].
It is necessary to control the content of <223> along transverse direction (TD) and improve the texture content of <101> etc., which has the high equivalent sliding system number and is helpful to improve the comprehensive mechanical properties of material in TD.
It is necessary to control the content of <223> along transverse direction (TD) and improve the texture content of <101> etc., which have the high equivalent sliding system number and are helpful to improve the comprehensive mechanical properties of material in TD.

Novel, energy efficient separation/beneficiation technologies will be needed to shift the current mining paradigm towards the exploitation of natural mineral deposits that are very fine-grained (below 20 µm particle size).
The first issue strongly reduces the number of collisions with the gas bubbles in the flotation cell while the second one prevents overcoming the energy barrier of the particle-bubble interaction after a collision.
Aspects of these techniques are covered in a number of earlier reviews [7, 8, 9, 10, 11].
In Eq. (1), n0 and nc refer to the number of fines and the carrier particle, respectively.
The resulting circumferential velocity, u, can be used to establish a corresponding Reynolds number Re = ul/ν.

The metallographic structure was polygonal ferrite and the ferritic grain size number was 8 to 8.5 according to JIS in all the specimens.
Whereas the concentration of solute Ti was nearly zero and the TiN precipitation came to an end in the portion to which N diffused, the TiN precipitation did Fig. 10 The number of intersected per unit area of slip plane.
Here, letting ns be the number of particles intersected by a unit area of a slip plane, the relationship between L and ns is expressed as L = ns -1/2 (2) This equation has been obtained assuming that the particles are spherical.
In the case where the precipitate particles are spherical having a radius of r, to begin with, ns is equal to the number of particles in a parallelepiped including a slip plane and having a height of 2r, as shown in Fig. 10(a).
Letting f be the volume fraction of a particle and nv the number of particles per unit volume, f is given as the product of nv and the volume of a particle.

Geometrical Structure for Endoprosthesis Surface Lubrication and Wear Prognosis Krzysztof WIERZCHOLSKI1,a* 1Koszalin University of Technology, PL 75-453 Koszalin, Śniadeckich 2, Poland akrzysztof.wierzcholski@wp.pl Keywords: endoprosthesis, surface, measurements, gap height, wear, random prognosis Abstract: It can be stated that over the last ten years in the European Union, the number of bone fractures caused by osteoarthritis has increased twofold.
Introduction The increase of joint fractures number in the EU, anticipated on the grounds of the demographic development in the coming 50 years, would reach about one million.
In the case of Weller’s artificial endoprosthesis, the metal surface of the head is coated with randomly shaped chaos scratches obtained through abrasive grain treatment [5] The measured values of St for the metal heads of the Weller’s endoprosthesis barely reach the value of 0,702 micrometers.
The modified stochastic Reynolds equations in spherical dimensionless coordinates j,J1 for unsteady motion determined by the Strouhal numbers takes the following form [4,5]: (4) We denote: p1=p/p0-dimensionless pressure, p0=whR2/(e0)2, w-angular velocity of the head, h-dimensional fluid viscosity, e0-dimensional characteristic value of gap height, R-dimensional radius of the head, Str-Strouhal number, t1-dimensionless time, j-circumference, J1-dimensionless meridian coordinate.
Acknowledgement This research project has been supported by the European Project UE Grant under contract number UE Grant IRSES,612593, 2013-2016 References [1] K.Oczoś,V.Lubimov, Geometrical structure of surface (In Polish).

There are number of factors in the product such as surface condition, height, weight, length, width etc., which may be consider for the measurement of the quality.
There are number of factors that influence the Material Removal Rate and surface roughness like machining parameters, cutting tool material properties, work piece material properties, cutting conditions etc.
In their work, 3-D micro structural models with equiaxial and extended grains inherent in cold rolling are developed and used in calculations.
There are number of machining processes and their applicability, which is valid for the products size, shape and requirements. [2] performed their research work on the optimization of surface roughness during broaching process.
Number.

Nigeria has seen a similar transition, particularly in large cities where a large number of businesses have chosen this path.
Straw, which is a by-product of cereal plants is obtained in the form of dry stalks after grain and staff have been extricated from the plant.
Bricks with high water absorption will exhibit a number of undesirable properties in the brick, mortar joint, and masonry structure.
The solid clay was broken and sieved multiple times to different diameters for the finest grains, and to remove unwanted materials like stones that could affect the homogeneity and properties of the samples.
Moisture content = WwaterWSoil X 100% (2) 3.1.6 Sieve Analysis Test The sieve analysis test determines the particle size distribution of coarse-grained soil.