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The basic quality of a rock mass is an inherent fundamental property that affects its stability in engineering projects.
It depends on internal factors of the rock structure, of which rock mass integrity is a controlling factor.
The formation of coral reef rock mass is affected by multiple factors.
It is a generalized representation of the rock mass structures, and is determined by many factors including the shearing of structural planes, the sizes of structural bodies, and the cementation between bodies.
China’s engineering geologists have always used properties of joints and fissures (which directly affect rock mass integrity) to describe the engineering characteristics of rock mass, especially the distances between joints and fissures.

An ideal scaffold should mimic the morphology of the natural extracellular matrix and have good mechanical properties and biologically functional.
As a result, these scaffolds could hardly make up the deficiency, such as: difficult forming and lack mechanical properties of hydrophilic natural biological materials; the poor biocompatibility of synthetic biological materials.
The mechanical properties of electrospunning fiber mats are still poor, and it is difficult to expose cultured cells to the correct stress environment to produce tissues [6].
For further study, we would add cells and growth factors in the scaffolds by mixing in the polymer solution or electrospinning to get a scaffold with bio-functions.
The hierarchical scaffold formed by hybrid technique improved not only mechanical properties, but also the simulation of MSCs, such as cells attachment, proliferation and cells compactness in scaffold.

PMMA is the best material for microfluidic chip fabrication because of its low cost, prominent electrochemical properties and biological compatibility.
In addition, polymers have good electrochemical properties and biological compatibility, making them the best choice for microfluidic chip fabrication[7-9].
We carried out single factor experiments through changing mold temperature, melt temperature and injection rate.
However, higher mold temperature would increase cooling time, and affect production efficiency significantly.
However, high melt temperature would lead to aging of plastics, which affects operational performance of the chip.

Hence it is important to have a method for estimating the hydrophilic/ hydrophobic surface properties of such particles to select a suitable surface modification strategy.
Therefore, it is generally accepted to use the phenomenon of capillary penetration of liquids into porous media to determine the wetting properties of particles by measuring the penetration velocity of well-defined liquids in a powder packing.
Introduction The incorporation of organic or inorganic particles suspended in an electrolyte bath during metal electrodeposition results in composite coatings with better and sometimes new mechanical and chemical properties [8].
Dedeloudis and Fransaer [4] showed that the way in which a metal electrodeposits around a particle on an electrode depends strongly on the surface properties of the particle and the electrode.
Generally, the selection of the measuring liquid system depends on the chemical properties of the system.

The VSM characterization results showed that different aging times did not affect the barium hexaferrite nanomagnets' magnetic properties.
The physical properties of barium hexaferrite are influenced by various factors such as the manufacturing process, chemical composition, temperature and sintering period, and type and amount of substitution.
However, there was a slight effect on the magnetic properties of the nanomagnets.
Chen, “Structure and multiferroic properties of barium hexaferrite ceramics,” J.
Muttaqin, “Effects of Sintering Variables on the Physical and Mechanical Properties of Metal Injection Molding Molded 17-4 PH Stainless Steel,” 2021.

The maximum damping force can not be further increased due to space constraint of size and other factors contributed to, although the structure is simple but limit the improvement of its performance.
The damping force provided by magnetorheological fluids changes with the rheological properties.
Shear yield stress, directly leading to rheological properties of magnetorheological fluid, has a critical influence on performance of damper.
The damping gap is also a very important design parameter as it’s cubic inversely proportional to the damping force, even a small reduce would greatly increase the output of a shock absorber, but if the gap is too small, it will cause MRF retardation, affect mobility, and increase difficulties of making shock absorbers, so it is usually designed 1-2mm [6].
The increment of piston diameter is allowed to increase output of the shock absorbers, but it has shortcomings that on one hand it reduces the adjustable damping factor, on the other hand it increases the volume of shock absorbers as seen from Eq.3.

Introduction Sapphire can be widely used in industry, science and jewelry industry, especially as the most ideal substrate material for LED (Light Emitting Diode), LSI (Large-scale integrated circuit), SOS (Silicon on Sapphire) and superconducting nanostructure films, because of its unique physical, chemical, optical, electronic and mechanical properties.
Tab. 1 Physical properties of sapphire melt and B2O3 B2O3 Al2O3 B2O3/ Al2O3 ρ (kg/m3) 1648 3030 0.544 ν (10-6m2/s) 2366.5 18.8 125.88 λ (J/msK) 2.0 2.05 0.976 cp (J/kg K) 13.48 1260 0.011 α (10-3K-1) 0.09 0.005 18 γ (N/mK) -0.407×10-3 μ (kg/ms) 3.9 0.057 68.42 Pr 26.29 35.03 Numerical simulation.
Because the temperature coefficient of interfacial tension between B2O3 / sapphire melt and 5cst silicone oil / HT-70 is almost the same, the main factors affecting thermocapillary flow are viscosity and thermal diffusion coefficient of lower liquid layer.
In the two-layer fluid system, the factors that determine the flow stability are not only the dimensionless parameters such as Pr and Marangoni number of single-layer fluid, but also affected by the thickness ratio of two-layer flow [26], viscosity ratio and thermal diffusivity [27].
Kurlov, Sapphire: properties, growth, and applications, Reference Module in Materials Science and Materials Engineering, (2016), https://doi.org/10.1016/B978-0-12-803561-8.03681-x

Therefore, it is interesting to develop packaging materials that can help maintaining the highest quality of food products as long as possible by reducing or limiting the factors.
Mechanical properties Universal tensile testing (Tinius Olsen THE 1000N universal testing machine) was used to observe the mechanical properties of the composite films following the ASTM D882.
The good dispersion quality of lignin can also improve mechanical properties.
The lignin 1 phr may be the optimal amount to be added to aid in interface and mechanical properties.
Rohmah, Synthesis of PP-g-MA as compatibilizer for PP/PLA biocomposites: Thermal, mechanical and biodegradability properties, AIP Conf.

Due to its suitable physical properties and good biocompatibility, the titanium (Ti) can be used for development of porous structures for biomedical applications.
Most of them are focused on physical and mechanical properties and biocompatibility [8,9].
The interconnectivity and geometry of the pores might be also important factors affecting corrosion resistance of porous materials [11,12].
The relation between physical properties, such as open porosity, pore size, agglomeration and interconnectivity of the pores, and corrosion parameters of highly porous titanium scaffolds (with the total porosity up to 80%) in physiological medium will be investigated.
The physical properties of porous titanium samples Designed porosity [%] Total porosity Pt [%] Open porosity Po [%] Spherical pore diameter D [µm] Form factor of pores FF (sphericity) µCT µCT µCT SEM + IA 45 47.31 32.69 301 +/- 171 0.87 +/- 0.061 55 53.21 46.80 274 +/- 155 0.87 +/- 0.068 60 67.19 67.08 310 +/- 176 0.87 +/- 0.051 75 77.16 76.96 292 +/- 166 0.87 +/- 0.053 Figure. 2.

The heightening and steepening of artificial excavation slope affect the security of the slope itself and induce instability of natural slope.
Find out the safety factor of slope without any measures.
It’s the maximum allowable slope angle by the given geological conditions and corresponding mechanical parameters of rock.
The result is =1.293, which close to the given safety factor =1.3.
Vols. 518-523 (2012) ,4749-4752 [4] Shiguo Sun , Peixin Dong.Space properties of Effects of slope stability by Underground mining.