Search results

Perform a numerical simulation for the original roadway support, base on the in-situ stress and physical and mechanical characteristics of surrounding rock in experimental; study the impact of the stability of roadway’s surrounding rock, while the space change of trellis and change of supporting intensity; optimizing the original support form, so as to maximum reducing the impact of the coal bumps.
There are many factors impact could result in coal bumps, such as hard coal seam, hard roof and floor, geological structure, additional stress with mining, mining depth and area size of goaf [1].
Within the distance scope of 6.2~27.8m, affected by the mining, the internal stress of coal increased rapidly and peaked to 26.1MP at the position of 6.2m, then reduced quickly within the scope of 0~6.2m.
Mechanical property and economic effect of contractible concrete filled steel tube support [J].
Test on structural property and application of concrete-filled steel tube support of deep mine and soft rock roadway.

Introduction Light, as an important factor what affect the growth and physiological metabolism of the plant [1].
Both the light affect plant growth and development by energy (photosynthesis), but also affect the growth, development and differentiation of the plant as signals.
In the production, we could take advantage of the different properties of different biological materials for controlling growth of pepper differently.
In the production, we could take advantage of the different properties of different biological materials for controlling growth of plants differently
[7] Luo Youxin: Grey System Theory And Its Application In Mechanical Engineering( National Defense University Publishing, China 2001)

The shredding represents the unitary operation to reduce the geometric dimensions of food materials due to external mechanical action [16, 17].
Shredding of food material must be capable to maintaining the material properties, in the cutting process must not appear excessive heating or possibly of breaking the material due to inadequate choice of cutting device [11, 12, 20].
Experimental procedure To achieve the laboratory experiments, for better relevance of experimental results from the variety of food materials were selected to study a variety of materials textures with different properties and homogeneity so that it covered a wide range of properties of food materials with soft texture (Table 1).
Kays, Preharvest factors affecting appearance.
Clydesdale, Color as a factor in food choice.

It was established that the fluence value affects the amount of magnetic α-phase.
Since the formation of this phase is connected not only with the change of the crystal lattice (fcc®bcc), but also changes in the magnetic, mechanical and corrosion properties, the study of g® α transition in irradiated steels is an important task of radiation material science and requires close attention [1].
Until recently the diffusionless g® αʹ transformation occurring in the process of cold strain of stainless steels was investigated using electron microscopy, X-ray analyzing, and identifying magnetic properties [6, 7].
This method is used to study a wide range of crystalline materials and, in particular, to determine the microtexture, crystallite orientation and properties of grain boundaries [8,9].
Fig. 6 also makes it possible to assume that the orientation of a grain is the factor which determines the form of the defect structure: whether blisters (101), or αʹ - phase (001) are formed. 

The solid/liquid phase evolution especially high temperature transformation will affect the inheritance behavior of microstructure for semi-solid steel.
Gleeble-3800 mechanical simulator was used to conduct the semi-solid controlled cooling process.
The phase property could help us understanding the phase transformation of M2 steel during semi-solid cooling.
The shape of solid particles tends to be oval with high roundness and the shape factor falls a high level around 0.84.
Li, Microstructural evolution and mechanical properties of 9Cr18 steel after thixoforging and heat treatment, Mater.

Algae and their toxins can also affect nutrient-rich waters.
Small rivers are often affected by local anthropogenic activities, with poor water quality.
It is expected that the waters of the plain to have the lowest quality, and the influence of local factors in order to improve their quality is minimal.
The properties of these waters can generally change very quickly - for example, turbidity, influenced by precipitation, or seasonally influenced color.
The following systems, sectors, objectives and activities are affected by water pollution: 1.

In general, the properties of the aggregates are strongly related to their composition as well as to the recycling process [12].
Many researchers have been studying the best technologies to obtain green concrete, a sustainable product characterized by improved properties and several advantages such as reduced CO2 emissions or reduction of unused waste products [6-13-14].
This study does not consider the economic and technical factors.
The mixture considered in this research have same workability and mechanical resistance with constant parameters such as w/c ratio, cement content and type of cement employed; making these assumptions can be useful to correctly evaluate the impact.
Furthermore, the mechanical properties of the analysed concrete were not considered and the processes cannot be found in the SimaPro database, so the results come from different criteria used in the evaluation method considered in the software (the method used in SimaPro was Eco-indicator 99).

Intorduction An experimental fact is that a narrow material layer is formed in the vicinity of frictional interfaces in metal forming processes whose properties are quite different from the properties in the bulk [1-3].
The material properties of the products extruded out from billets in the container and the channel part of the die are probably not the same, thus the billets are composed of two parts: billet 1 and billet 2, as shown in Fig.1.
Chandrasekar, T.N.Farris, A new approach for studying mechanical properties of thin surface layers affected by manufacturing processes, Trans.
Shikimaka, An approach to prediction of evolution of material properties in the vicinity of frictional interfaces in metal forming, Key Engng Mater. 345-346 (2007) 741-744
Sun, Optimum design, microstructure and mechanical properties of Ti/Ti3Al multi-layered materials, Mater.

Results revealed distinct morphological and structural properties of ZnO thin films deposited on each substrate.
There are many factors that govern the morphological and structural properties of the film grown by this method, such as deposition speed, time, coating times, precursor concentrations, aging time, and annealing temperature [9].
Thermal properties of each type of substrate are listed in Table 1.
Kuroyanagi, “Properties of aluminum-doped ZnO thin films grown by electron beam evaporation,” Jpn.
Ashida et al., “Thermal transport properties of polycrystalline tin-doped indium oxide films,” J.

In addition, the profile milling with shaping is different at kinematics and dynamics of the cylinder [33, 34], so for the analysis of the geometric accuracy of the treated surfaces it is necessary to have mathematical models linking the indicators of surface's geometry with dominant factors of the process: the elements of cutting mode, and the parameters of the cutting tool [28, 35].
These errors will eventually affect the deterioration of surface roughness and waviness of the product surfaces in the end.
Analysis of Geometric Errors We will analyze the geometric errors of surfaces treated with shaping cutter and emerging under the influence of its specific design elements and we will not consider the factors that characterize the milling mode (feed vs, cutting depth t, the angular velocity ω) and the number of teeth Z, because their impact on the errors of treated surfaces is quite well known.
Gusev, Safe machining of blanks with nonuniform properties, Russian Engineering Research, 33(10) (2013) 602-606
Gusev, Spindle Rigidity in Milling Blanks with Nonuniform Properties, Russian Engineering Research, 33(11) (2013) 646-648