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There is a galvanic sediment junkyard in Myjava district, which comes from production of metals and metal products, and has been affected by environmental inappropriate technological applications.
A soil of Gelnica district is burdened by natural resources mining, mechanical engineering and non-ferrous metals metallurgy.
According to our survey results, the districts with a higher degree of agricultural soil contamination with heavy metals are located in different regions of Slovakia, and the degree of contamination depends, among other factors, on the type of soil, mining activities, local industries, traffic, or usage of artificial fertilizers and pesticides.
The overall soil condition is significantly affected not only by current public attitude and approach to this topic, but especially by careless behaviour in the past.
Present state of monitored soil properties, VÚPÚ, Bratislava (1997)

Several factors may affect the guided wave propagation such as environmental conditions, material structure and the presence of stress in the waveguide.
TOFσ is affected by the acoustoelasticity effect and the material elongation caused by the applied load as follows.
Two analytical expressions of fundamental torsional mode velocity propagating in a medium under mechanical stress are studied based on the acoustoelasticity effect.
The expression depends on the material properties including the Lamé and the Murnaghans constants and the applied stress.
The material properties used for steel were assumed as follows: Density ρ = 7830 kg/m3, Young's modulus (E) = 210 GPa and Poisson's ratio ν = 0.3.

Thereby the focus on imaging properties are further decided[2,3].
Its main characteristics and nature: (1) It is a static electric field, the field has nothing to do with the time; (2) It is a field in a vacuum; (3) The structure of the field is rotating axisymmetric; (4) It does not consider the effect of the electron beam space charge and current, the field is almost not affected by the influence of space charge or current space distribution[4].
This study takes 60 kw, 30 kv melting electron beam gun for example, by considering the various factors and the corresponding calculation, get the structure size of three electrodes of the melting electron beam gun and form the structure of high voltage electrostatic field.
Four characteristics and properties of the high voltage electrostatic field determine it is passive and irrotational, which can be obtained the Laplace equation of meeting potential distribution within the scope of the field(the form in cylindrical coordinates)[5]: Set the boundary curve for , so the paragraphs boundary curve and its boundary conditions are as follows: The Laplace equation of the above is discrete.
Through analysis, there are two main reasons: (1) The theoretical calculation is approximate, some assumptions are made to make the system perfect in the process of calculation, simplify and ignore several factors such as space charge density

These materials can modify their properties when affected by an external agent.
The mechanical properties of elastomers specifically in terms of modified hyper elasticity, vibration and acoustic damping properties make them a major asset in a variety of industrial applications [7].
The mechanical and magnetorheological properties of the structure can be varied by MREs made of expansive and small iron particles blend [9].
Next step was to model the properties of materials in the EDT.
The mechanical properties of materials were defined as mentioned in table 1.

RESEARCH OF THE PARAMETER FOR THE PISTON’S CONFIGURATION IN THE TILE PRESS’S MOVING BEAM Hu weiwen a, Zhang baiqingb and Fen Jing-huac Mechanical Electronic School ,Jingdezhen Ceramic Institute ahuweiwenjdz@yahoo.com.cn, bzbqxjq@sina.com.cn, cfjh8496255@yahoo.com.cn Keywords: Tile press; Numerical simulate; Finite element Abstract.
To remove the powder in the suppression of unfavorable factors in the process, improving the quality of forming green body must be the mechanical properties of powder and the powder in the suppression of the movement of the process for re-understanding and analysis, looking for particles the mechanism in the suppression press; Establishing the parameters for ceramic compaction model in order to compaction equipment design and operation of process control provides a theoretical basis to improve the yield rate of compaction.
Fig. 1 Sketch of ceramic powders compacting 1,Piston 2,Moving beam 3,Powders 4,Mold Fig. 2 Sketch of ceramic powders flan 2.5 Loading and Solution [4] Constraint handling: constraint handling which is appropriate or not directly affects the results, so it should to be close to the actual situation.
Fig.3 Sketch of urn moving style in a piston Fig.4 Stress distribution in 10mm plane direction by the single-acting piston Fig.6 Stress distribution in 10mm plane direction by the dual-acting piston Fig.5 The thickness sketch of 10mm flan by the single-acting piston Fig.7 The thickness sketch of 10mm flan by the dual-acting piston Summary 4 Summary In summary, the structural parameters of piston will affect the quality of the pressed ceramic powder flan, and the following conclusions are these： 1) Through the process of the PRESS suppression simulation, we can get the distribution diagram of stress and thickness which are consistent with the actual suppression of flan. 2) By the comparison of analyzing single-acting and the dual-acting piston-cylinder, we know that the structure of the dual-piston is more conducive to improve the quality of flan.

Modelling and economic analysis of an improved duplex solar still Deepak Kumar Murugan1, a, *, Natarajan Elumalai 2, b 1 Department of Mechanical Engineering, Velammal Engineering College, Chennai, Tamil Nadu, India 2 Institute for Energy studies, Department of Mechanical Engineering, Anna University, Chennai, Tamil Nadu, India adeepu.energy@gmail.com benat123@gmail.com Keywords: Solar still, solar distillation, theoretical analysis, economic analysis, yield output Abstract Water is one of the most significant substances on earth.
The Grashoff number and Prandtl number can be calculated from the various physical properties of the vapour which are temperature dependent.
Performance analysis of solar stills based on various factors affecting the productivity – A review.

The influence of the refined microstructure on the mechanical properties was evaluated by tensile and microhardness testing.
Similar to MIM, free sintering of the structures is associated with grain growth and thus affects the mechanical properties especially when intricate parts with 100 µm wall thicknesses and grain sizes in the same range come together.
Tensile tests and micro hardness measurements were carried out in order to compare mechanical properties.
Additionally, mechanical properties are influenced by pore form and size.
Summary The influence of THP on microstructural refinement and mechanical properties was investigated in this study.

Introduction Recent studies on technology groups utilizing liquid plastic materials, such as Liquid Crystal Display (LCD) technology, have demonstrated their capability to produce items with intricate shapes, remarkable flexibility, and the ability to achieve high-resolution mechanical and chemical properties.
Ibrahim et al. [5] examined how factors like layer thickness and exposure time influence quality.
The authors concluded that a layer thickness of 50 μm and an exposure time of 9 seconds would give the best mechanical properties with the smallest dimensional deviation.
The experimental plan is designed according to the FCCCD method, with the number of influencing factors k = 5, including 32 samples.
This shows that the ANN model is fully capable of predicting and optimizing other quality criteria for AM products in general and 3D printing resin according to DLP technology in particular built on desktop devices such as: surface properties, mechanical properties, etc.

Biodiesel, whose main content is fatty acid methanol esters (FAME), is becoming increasingly accepted as a renewable source to substitute petroleum because of these similar properties to diesel fuel, renewability, biodegradability and environmentally advantages.
Therefore, the biodiesel yield could be calculated by the following formula: ma: actual weight of end-product biodiesel, mt: theoretical weight of end-product biodiesel. 3 Results and Discussions Studies have found that methanol/oil molar ratio, catalyst amount, reaction temperature and time are the four main factors affecting the biodiesel yield in the transesterification [7].
A uniform design experimentation was conducted and only seven experiments were needed for four factors and seven levels.
The four factors mentioned above were labeled as X1, X2, X3 and X4, and the biodiesel yield Y(shown in Table 2).
The above equation indicated that the four factors did not affect the biodiesel yield of transesterification with monotonicity.

Let us dwell in more detail on the structure and properties of this polymer, since this information is important for our study.
In fig. 3 gray areas indicate the intervals of filler concentration values at which the material receives antistatic properties.
It should be added to the above that high filler concentrations significantly impair the mechanical properties of the composite.
Tsobkallo, Textile film threads with antistatic properties based on polypropylene with carbon fillers, TEXTILE-200. (2009) 204
Mechanical and electrical conductive properties of polypropylene fibers filled with carbon nanotubes with a functionalized surface, Journal of Applied Chemistry, 85 (2012) 957–962