Search results

Reality shows that only the fully prepared fire control facilities design of underground garage can effectively reduce the loss of fire and ensure the safety of people's property and lives.
Compared with the ground building fire, the characteristics of underground garage fire are as follows: [1] The fire types are complex .Underground garage, different from common building, has a dual characteristic of underground buildings and parking lots, therefore the factors causing fires are more than the common building.
In the event of fire, equipment operation will be affected and some fire control facilities will not be able to work effectively.
Finally, after comprehensively considering the personnel quality of those who using fire extinguisher in underground garage, machine room being narrow lane width factors and so on, small fire extinguisher cart will be a good choice.
Figure 3: The low position spray system Figure 4: The automatic sprinkler in mechanical stereo underground system in the underground garage garage of The First Affiliated Hospital of The First Affiliated Hospital of of Harbin Medical University Harbin Medical University The combined automatic sprinkling and foam system.

The inhomogeneous oxygen distribution would significantly affect the microstructure formation of an oxygen-containing Ti-Nb alloy.
Although titanium alloys are used in a broad range of fields, the cost of titanium alloys is one of the factors preventing the expansion of their use.
The inhomogeneous phase transformation of b phase should affect mechanical properties and shape memory effects of Ti-Nb alloys.
The inhomogeneous oxygen distribution would significantly affect the microstructure formation of oxygen-containing Ti-Nb alloy.
Here, we discuss the slow diffusion of oxygen in Ti alloy that may affect the microstructure formation.

Consequently, different cooling rates, affecting the magnetoelastic energy, change the magnetostriction constant.
Hu, Investigation of grain growth and magnetic properties of low-sintered LiZnTi ferrite-ceramics.
Chattopadhyay, Study of the bulk magnetic and electrical properties of MgFe2O4 synthesized by chemical method, Mater.
Childress, Effect of lithium and oxygen losses on magnetic and crystallographic properties of spinel lithium ferrite, J .Amer.
Physical properties of ferrimagnetic oxides in relation to their technical applications, Philips Technical Library, Eindhoven, 1959

Material Removal for Modal Effect on Impeller Blades by Finite Element Analysis WeiHua WU 1, a, Can ZHAO1, b and GuangBin BU2, c 1Modern Manufacturing Engineering Centre, Heilongjiang Institute of Science and Technology, Harbin 150027, China 2Nanjing University of Aeronautics and Astronautics Electrical and Mechanical University, Nanjing 210016, China aweihua_wu2004@163.com, bCanzhao@sohu.com, cbuguangbin@sina.com Keywords: blades, material removal, modal, finite element method Abstract.
Introduction Blades, one of the thin cantilever parts, are light and have the lower rigidity; removal of blank material in the processing of blades directly affects the stiffness matrix, mass matrix and damping matrix.
As the decisive factor for avoiding the resonance, at present, researchers have only studies the final modal of blades process and a large number of experimental studies have been carried out.
It is necessary to give properties of the modal material after setting modal. 2A70 aluminum alloy, density ρ=2 800 kg/m3, elastic modulus E=7.1e10 Pa, Park glaze than μ=0.31 compose blades materials.

Each particle is treated as a rigid body and owes a certain shape, size and physical and mechanical properties.
In actual operation, a small relaxation factor =0.1~0.5 is chosen to make equality: (3) Substitute Eq.(1) into Eq.(2) and then Eq.(2) into Eq.(3), So we have .
Besides, affected by the excavation, soil mass will move into open caisson by plastic flow.

It directly affects normal using, fatigue failure and even threatens the safety of bridge structure.
Stress amplitude is the main factor influencing the stiffness of structural fatigue, Niu [1] studied the evolution regularity of flexural rigidity.
Dimension of the specimen (Unit: mm) Table 1 Material properties Concrete Modulus of Elasticity/GPa 35.2 Cube Compressive Strength/MPa 53.3 Steel bar Modulus of Elasticity/GPa 210 Yielding Strength/MPa 307 CFL Ultimate Strength/MPa 4750 Modulus of Elasticity /GPa 230 Thickness/mm 0.23 1.2 Test groups and loading spectrum In this test, under the condition of stress ratio 0.1, computing a 10% and 15% increase in stress amplitude and stress amplitude of the three groups of 15 girder, 5 in each group as can be seen from the figure and table.
[6] Yao G.W, Huang P.Y, Niu P.Z, Zhao C and Zheng X.H, Fiber sheet under constant amplitude cyclic load increase damage behavior of reinforced concrete beam, Mechanical strength, 2004, 26（S）: 25-27

Each type of battery has its properties, advantages, and advantages.
Of these five types of batteries, the NMC battery is the battery that has the most superior properties compared to other types of batteries for the use of Electric Vehicles [2].
Each compound has properties, advantages, and disadvantages [13]. extraction of laterite nickel ore, where the neutralizing agent MgO provides excellent precipitation rates.
It can be one of the factors that can affect the process of deposition of elements so that the chemical composition of the targeted component, namely Nickel, is lower when compared to previous studies [22].
One of the factors that cause the Mg, S, and O content to be quite dominant is the number of MgSO4 salt compounds formed.

Introduction Many materials properties (resistivity [1,2], yield strength [3-5], etc.) and materials reliabilities issues (electromigration [6,7], fatigue [8,9], etc.) are impacted by grain structure.
As such, there is considerable interest in modeling these phenomena and in understanding how grain structure affects them.
Some relevant materials properties are listed in Table 1.
When the copper film is treated as homogeneous and isotropic using the properties of bulk copper (see Table 1), it exhibits a uniform stress value throughout the copper of 178 MPa.
Wang, Single crystal elastic constants and calculated aggregate properties: a handbook, M.I.T.

In addition, since some other minerals like quartz, feldspar, hydromica, illite, chlorite, limonite, and carbonic acid rock cuttings would be produced due to the interaction of various factors in the MMT mineralization process, and the existence of these minerals would affect MMT performance seriously, purification has to be carried out for its research and production.
To take it as a lubricant additive, mechanical high-energy ball milling is needed to refine and prepare it into zero-dimensional nanometer materials along with oil solubility modification, so as to get the steady dispersion system.
Disperse them for 0.5h through mechanical stirring (800r/min) and form a dispersion system.
(Grant No. 201645000034018 and No. 701355141203), the Postgraduate Innovation Base of Mechanical Engineering of Guizhou University (Grant No.
[3] Yang Lv, Study on the Auto-restoration Properties of Palygorskite Carried Ag Nanocomposite for iron-based Triopair, D.

Key to achieving functionality of the PET at the desired scale is achieving scalability of the material properties of the PE and PR.
Table 2 Selected Properties of SmSe [17,19] Structure: Rock salt Gauge Metallic threshold Bulk modulus 2.3 ~3.5 43 Some properties of the SmSe material are given in Table 2.
It is key to optimize thin film properties to duplicate bulk material performance.
Making a functional piezoresistive thin film involves both fabrication and verification of properties.
Kulshrestha, Pressure induced magnetic, electronic and mechanical properties of SmX (X=Se, Te), J.