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Taking atmospheric as film temperature the properties are taken from Heat and Mass Transfer Data book.
From those properties Reynolds number, Nusselt number, heat transfer co-efficient and heat transfer are calculated.
Impinging jet flow characteristics are even more complicated with additional variables affecting the flow such as angle of impingement, distance from impingement surface.
Parameters affecting flow field For the present case, the flow field variation has been investigated over the following parameters.
So the present experimental investigating exploring that the Reynolds number and reattachment length are the dominant factors which are affecting the flow field and heat transfer also.

Contact area between the sample and the ice was considered to be the most influential factor.
Research about the impact of ice texture on the sliding properties has not been reported from perspective of ice.
One of the reasons for this could be the complicated ice-object tribological system which is affected by many factors, such as the ambient and ice temperatures, relative humidity, macro geometry and surface properties of the sliding object [1].
It was concluded that the main factors determining friction are: the thickness of water film (that depends on the ambient conditions and pressure) and the relative contact area.
Researchers would also like to acknowledge Faculty of Mechanical Engineering, Transport and Aeronautics, Riga Technical University, for providing technical support in experiments.

During electron beam processing, the mechanical analysis of metal powder molten pool temperature following focusing current are studied.
Introduction Melting effect and processing quality of EB processing have a close relationship with processing parameters such as acceleration voltage, beam intensity, processing speed, EB focus position and quality, physical parameters(material properties etc.), and geometry parameters(the workpiece thickness etc.)
High-speed EB focused by electromagnetic system in electron gun generally requires a high vacuum in the space, and its trajectory shape is generally with characteristics of the smallest diameter of cross section and largest electron energy density. 2.1 Influence Factors Through the static lens, leaving anode hole the EB gradually diverge, then passing a short magnetic lens, the EB becomes focused again.
Fig.2 Scheme of electron optical system of electron gun Da Dao-an [5] simulated the main factors affecting on the EB focus include: (1) Thermal velocity.
To realize precision control of energy input of 3D rapid prototyping, it is necessary to analysis and control the effect of various parameters such as physical factors, geometric parameters of electro-optical systems, processing parameters on the focal spot size of EB. 3 Method of Varying focus current-extremum temperature 3.1 Experiment Principle Paolo Ferro et al [4] and Wu Hui-qiang et al [6] proposed the heat source model studied on EB processing includes lineal heat source model, rotary-Gauss body heat source model, moving double-ellipsoid heat source model, cone heat source model, and combined heat source model.

A 23 design of experiment (DOE) was used to deposit bond coat and top coat powders with three controlled factors of input current, powder feed rate and stand-off-distance.
Coating quality was determined by its porosity content and hardness properties [7, 8].
Major problems in plasma sprayed coatings were presence of open pores, closed pores and micro-cracks which reduced mechanical properties of coating such as elastic modulus, micro-hardness and bonding strength [18].
A gradient of hardness properties across the substrate signifies its relationship with coating mechanical properties.
Presence of open pores, closed pores and micro-cracks reduced coating hardness along with reduced mechanical properties of coating such as elastic modulus, micro-hardness and bonding strength [18].

For the texturing with the type of grooves, various experiment researches had been conducted to investigate their frictional performance in given conditions including lubricated [7-9] as well as dry friction [10,11], which showed that the micro-grooves with suitable parameters could provide better friction properties.
However, it can be seen from the figure that the curve of direction angle 60° is always in the bottom, which demonstrates its optimal properties in reducing friction among all of the specimens.
The antifriction effect of surface texture depends on lots of factors such as surface area, contact type, material of specimen, lubricant and lubricating conditions.
It can be seen that the resistance reaches the maximum when the direction angle is 90° while reaches the minimum when the direction angle is 0° without considering the effect of other factors.
As can be seen from the diagram, without considering the effect of other factors, the maximum extrusion force will be achieved when the motion and groove direction are perpendicular.

Slope has caused huge life and property losses of our country and people.
Taking Suoertou landslide as an example In this paper, on the basis of investigation and study, general situation of Suoertou landslide is introduced, then the stable state is analyzed, calculated and evaluated, the conclusion is a depend basis for later treatment. 1, Introduction Land slope is one of the highest frequency and most damaging geological hazard, once the land slope lost its stability, it can cause huge life and property losses of people, and the safety of all kinds of engineering.
Its physical and mechanical properties are not good, strong permeability, poor stability 4, Analysis of Formation Factor for Suoertou Landslide There are many formation factors for Suoertou landslide, including natural and human factors, the major are type and properties of landslide, soil structure, geological Structure, effects of wind and water, seismic and human engineering activities. ① topography and geomorphology Topography and geomorphology is one of decisive factor that affect landslide development, suitable slope and a certain height difference are the basically terrain condition for landslide becoming.
Upper gravel soil is mainly to the rubble and gravel, its structure is aerial construction, the state is loose, ground cover is  sparse, it is good for surface water infiltration and circulation; lower layer carbonaceous slate clastic is very crushing affected by fault structure and slide perturbation, and the layer is easy soften and sludging when meet water, it has a poor engineering properties and belong to the facility-sliding strata; landslide bed is mainly to the carbonaceous slate, because of the effect of Pingding-Huama great fault, the layer has a fragmentation body, messy occurrence and developed joint . the above mentioned decide the occurrence and development of the landslide. ③ the condition and action of surface water and groundwater The leading edge of Suoertou landslide is facing Bailong River, it is directly scouring and erosion of the Bailong river, the width of the river is 18-30m in this place, and it has a strong capacity of erosion and side corrosion.

In general, high mechanical strength and good corrosion resistant properties are crucial factors that determine the dental implant quality [1].
Ti may lose its mechanical strength in the presence of different anions or cations, for instance, bacteria growth in the buccal cavity inducing pitting corrosion of Ti implants resulted in deterioration of its mechanical properties [8].
Rodrigues, Multifaceted roles of environmental factors toward dental implant performance: Observations from clinical retrievals and in vitro testing, Dent.
Popa, Microstructure, mechanical properties, and corrosion resistance of Ti-20Zr alloy in undoped and NaF doped artificial saliva, Met.
Mula, Thermomechanical processing of low carbon Nb-Ti stabilized microalloyed steel: Microstructure and mechanical properties, Mater.

Because the safety factor of underground mining issues, we have designed an RFID-based underground personnel positioning system design, the system can be used in systems for daily attendance, reduce accidents in human factors, safety in the event of an accident, for accident investigation provide an important basis.
Recent years, China mine accident-prone, not only to cause great harm to the people, but also the state property suffered significant losses.
So as not to affect the normal reader reads the card
(4) Line saving: Make sure to check personnel positioning system used in the cables for damage, including power cables and signal transmission cable, and the Times should repair any damage, to avoid interruptions in data transfer, thus affecting the overall personnel positioning data intact
During a failure, if the circumstances affecting the underground personnel monitoring, manual monitoring should be used, and make a record.

Diesel oil migration process The development tendency of diesel oil migration process is similar to gasoline because their physical properties are similar and diesel oil is also atmospheric storage.
The influencing factors, such as phase state, gravity, capillary force, viscous force, gas-liquid interaction and interior resistance of porous media, etc., control three fuels infiltration.
Gasoline and diesel oil are hydrocarbon mixture and some of their properties are given in table 1.
We can see the direction of propane gas flow is influenced by these factors including the leak velocity direction, gravity, position of the outlet and the tank wall shape.
It is affected obviously by gravity.

Because the position of neutral plane is related to mechanical properties of the material, material thickness, bending angle, and inner radius, so it's difficult to get an accurate value of the position coefficient of neutral plane K.
Fig. 3 Dimensional model and unfolding model of sheet metal parts in Pro/E Before using the Unbend function to unfold, K-factor in Bend allow should be set up.
It is worth noting that K-factor is equal to the position coefficient of neutral plane K, so K-factor is also an empirical data.
In addition, no matter which method is chosen, the position coefficient of neutral plane K is a key factor affecting sheet metal parts unfolding accuracy.
Application of Pro/E in Sheet Metal Expanding Size and Confirm Factor Y [J].