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Basic physical properties Among basic physical properties, bulk density and matrix density were measured.
Basic physical properties of tested materials.
Water vapour transmission properties measured by the dry-cup method.
Hence, the studied SPE can be from this point of view applied on all tested base materials. 5 Conclusions The effect of artificial ageing simulated by the long term exposure to the elevated temperature on mechanical properties, adhesion, and water vapour transmission properties of waterproof insulation based on SPE was studied.
In case of water vapour transmission properties, no visible effect caused by temperature exposure combined with impact tests was found and SPE exhibited high water vapour diffusion resistance factor.

PVP is a synthetic polymer that has good complexity and adhesion properties, excellent compatibility, good solubility in water, and almost all organic solvents, and low chemical toxicity.
It is widely known that the properties of nanofibers, such as diameter, pore size, porosity, and thickness, are affected by the electrospinning parameters [1].
To design more targeted nanofibers for certain actual use, some factors should be explored, including various factors altering the morphology of nanofibers and the effects of these factors on the properties of electrospun nanofibers.
Carbon nanotube (CNT), which was first discovered by Ijima in 1991, has gained the researcher’s interest because of its superiority in physical, chemical, and electronic properties.
Besides, the dispersion of CNT in the precursor solution is also affecting the fiber formation.

Therefore, various factors need to be comprehensive taken into account in the selection of wall slip coefficients.
Thus, these factors generally make the design process difficult to achieve the desired expectations.
Given the rheological essence of rubber melts, we should use visco-elastic models to describe the mechanical properties of tread rubber.
The extrusion swell ratio is mainly determined by production technical, the pattern mold structure and physical properties.
Fig.6 Velocity field along with the Z direction at different wall slip coefficients The shear rate field .The shear rate is an important factor affecting the co-extrusion process.

The factor of stress shift is
(3) Therefore, the long-term creep properties under low stress of non-linear viscoelastic material can be achieved by short-term creep data under high stress.
The corresponding shift factors are shown in Fig. 4.
The shift factors of rice hull flour/PP composite on the creep compliance curves are calculated by non-linear fitting.
Therefore, the shift factors of stress of this Rice hull flour/PP composite can be get

Recently Cann et al. further experimented with the relationship between the film thicknesses [6], the properties of the lubricant and variable parameters: oil volume, speed, load and viscosity.
The thickness of the lubricant film in contact with non-conformal friction surfaces can be affected by a number of operational factors.
Mechanical Engineering, vol. 93, no. 1, pp. 44-50, 1971
Bearing performance limits with grease lubrication: the interaction of bearing design, operating conditions and grease properties. 
Correlation between Model Test Devices and Full Bearing Tests under Grease Lubricated Conditions: the interaction of bearing design, operating conditions and grease properties. 

The reduction of Fe element can be caused because the magnetic properties of Fe are affected by temperature [25].
Along with that, the increase of Fe3O4 mass in a system can affect the magnetic properties of the whole system.
Thus, in order to maintain the magnetic properties of materials, it is important to understand the environmental conditions and factors that can affect them.
Too low or high Fe3O4 added, results in a composite structure, optical properties, and other chemical properties that are not optimal in degrading wastewater.
A mini review on factors affecting particle size, sphericity and pore size of mesoporous silica nanoparticles. 2020; 11: 15, 20

However, as a thermal process through melt expulsion and vaporization of unwanted material, laser irradiation causes material properties in the surrounding area to change through heat effect and melt resolidification.
This appears to be different from the grooving of Si under similar condition [11], since the different material properties have important effect on the performance of laser dry machining [13].
The recoil pressure and thermo-capillary force [14] formed in the process, which depend on both the material properties and laser condition [15], supply the driving force for liquid ejection, thus the material is removed both in vapor and liquid forms.
Besides the difference in thermal properties, Ge is roughly twice as dense as Si in both solid and liquid states, thus it is harder to eject molten Ge than molten Si under the same conditions.
The factors affecting the heat source, impinging force and energy loss can affect the results in the hybrid laser-waterjet cutting process.

Acoustics is the study of the properties of sound, generation, transmission, reception and induction of disciplines, is also part of the rapid development of modern physics together an interdisciplinary.
Figure.2 Strings vibrating motion of the Helmholtz Early 20th century jazz, Indian physicist Raman pull the strings produced a mechanical device, enabling the bow to pull the strings in a balanced rate, by experiment, he observed and measured the speed of the bow, the bow contact point to the distance of the bridge, Rally of these three factors, the relationship between them is obtained, the results show that the minimum tensile pull strings with the speed of a positive correlation with the bowstring contact point to the square piano yards inverse correlation.
Also affected the nature of the strings themselves, materials and production processes, such as uniformity of the material and some other factors, the pronunciation will follow change significantly.
Affect the thickness of the timbre of the strings is obvious.
Strings are affected due to various internal and external factors, the vibration is much more complex form, there is often homophonic strings issued a non-integer multiple unnatural homonym.

This paper briefly introduces the use of sound-absorbing materials and sound-proof materials in the buildings, concisely summarizes the factors taken into account in the acoustic design, and then introduces the requirements of architectural acoustics materials in sports venues.
Besides, in terms of the materials, we should ensure the protection against the tide and fire, decorative property and other requirements.
Main Factors Taken into Account in Scientific Acoustic Design In acoustic design, we should take into account two aspects.
Other Factors Affecting Noise Jamming Design of Sports Venues In addition to the noise intensity, noise jamming is related to the duration of the noise spectrum, the number of repeats, human auditory, psychological and physiological characteristics and other factors.
The second one is the noise radiated from mechanical vibration of architectural structures, that is, solid sound.

Ultrasonic machining has a great potential for applications in precision machining of ceramics, but still need to study the structure and properties of the work material [11].
The mechanical and thermal properties of Aluminum nitride ceramic shown in Table 2.
Levels of independent variables Fig1.Central Composite Design (α is 1.414) Factors Coding of Levels -1 1 Spindle Speed, V (rpm) 10000 20000 Feed rate, f (mm/min) 10 30 Table2.
Analysis of variance (ANOVA) was carried out to investigate which parameter significantly affected the surface roughness.
Based on ANOVA table both factors spindle speed and feed rate are influencing the surface roughness, feed rate is the most dominant factor.