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Raw materials and experiments 2.1 Raw materials (1) Cement: Portland cement (PC) was used with the physical and mechanical properties listed in Table 1.
Table 2 Mix proportion with EPS and SAP [kg/m3] Item Volume fraction/ % PC W Spherical particle Pure-Cem EPS-12 EPS-24 EPS-36 SAP-12 0 12 24 36 12 1619 1425 1231 1036 1425 486 428 369 311 428 0 2.2 4.3 6.5 125 SAP-24 SAP-36 24 36 1231 1036 369 311 250 374 (2) Mechanical and ultrasonic transmission properties The mechanical properties were tested with a TYE-3000 machine under the loading rate of 3kN/s.
The ultrasonic transmission properties were tested with a ZBL-U510 nonmetal ultrasonic detector
Results and discussions 3.1 Mechanical properties After desorption of SAP in the concrete, pores were left.
Desorption behavior would happen under series of factors in the cement paste, such as ions and humidity [8].

The onion structure could be crack initiation sites and crack growth paths resulting in the harmful affect on the fatigue behavior.
The chemical composition and the mechanical properties are shown in Table 1 and Table 2.
Table 2 Mechanical properties of A356-T6 aluminum alloy.
intensity factor Kmax.
(b) Relationship between crack growth rate da/dN and maximum stress intensity factor Kmax.

Therefore, the hole quality of the FRP composite is a vital factor that affects the strength of the assembly structure.
This implied that the critical thrust force can be enhanced by increasing the stiffness properties of the laminate for withstanding the thrust force during the drilling process.
Results and Discussion Mechanical properties from Table 1 are applied to compute the term in the critical thrust force model, Equation (12) for the hybrid laminate to monitor the onset delamination.
The average maximum thrust force and push-out delamination factors were measured and tabulated in Table 2.
This is despite the fact that many researchers have claimed that the tool can produce lower delamination factors in monolithic FRP composite [11,12].

Particle Flow Code (hereafter referred to as PFC) has been widely used in the study of the mechanical properties of rock and rock-like materials at the micro-scale [1-3].
PFC Model of Infilling Rock Joints The shear properties of infilling rock joints are affected by many factors, and infilling thickness and roughness are main factors.
In order to obtain the micro-properties of the established PFC model, an axial compression physical test is performed firstly, and the corresponding macro-properties, which are used to inverse the micro-properties of the PFC models based on the optimization inverison method, are listed in Table 1.
The inversion micro-properties are listed in Table 2.
Combined with fixed micro-properties, all micro-properties of the PFC model of rock discontinuities are consequently determined.

Study on direct current controlled distribution static synchronous compensator with mechanical properties used for improvement of voltage quality Qunfeng Zhu 1,a, Lei Huang2,b, Dengxiang Yang3,c, Guangyao Zhu4,d 1Department of Electrical Engineering, Shaoyang University, Shaoyang , Hunan, China 2Department of Information Engineering, Shaoyang University, Shaoyang , Hunan, China 3Sichuan Electric Power Corporation Xichang Electric Power Bureau, Xichang, Sichuan, China 4Department of Electrical Engineering, College of Hunan Mechanical & Electrical Polytechnic, Changsha, China asmallbeeseagull@163.com, b87431539@qq.com, ctomgreen6@163.com, dguangyao@gmail.com Keywords: reactive power compensation; static synchronous compensator; current control mode; voltage control mode ;voltage quality Abstract.
Fig.1 System configuration of DSTATCOM When DSTATCOM is used to compensate power quality caused by reactive current of load or to improve voltage quality of PCC, it is mainly through injecting a current with magnitude equal but direction opposite to reactive current of load into power grid, or injecting some reactive current to improve the voltage quality of PCC. 2．Detection of Reactive Current Reactive current detection is a important part of DSTATCOM functions, and its detection unit performance directly affects the compensation effect of the whole DSTATCOM device.
Serving as parallel compensation device of power system, besides mitigating harmonics, compensating unbalanced voltage and power factor, DSTATCOM can still effectively mitigating voltage quality problem such as voltage sag, voltage flicker etc; The study result proposed in the paper also provides reference for the engineering application of DSTATCOM device, and proper control mode can be selected depending on different compensation purpose of DSTATCOM.

The material of casing hanger is 35CrMo, and the material properties are shown in Table 1.
Name Yield strength σs(MPa) Elastic modulus E(GPa) Poisson's ratio μ Density ρ(kg/m3) 35CrMo 835 206 0.3 7.85×103 Fig. 1 The geometric model Table 1 Material properties Meshing.
Fig. 4 Maximum radial displacements of Flow-by with different diameters The Value of V depends on and affects the casing hanger running speed, annular space pressure between high pressure wellhead and casing hanger also affects the value.
(2) Where: v0: the running speed of casing hanger; k0: scale factor; v: speed of seawater passing through the flow-by.
We have made the analysis focus on the influence of the strength of casing hanger which is affected by flow-by in oil production.

Review of Materials for Solar Thermal Collectors Jie Li Harbin University of Commerce Harbin City, China Superteacher73@126.com Keywords: physical properties of materials, energy -saving, heat transfer, solar energy Abstract.
This paper fulfils identified information about materials and heat transfer properties of materials and manufacturing challenges of these three solar thermal collectors.
The heat loss is indicated by the thermal loss factor or k-value.
Glazing materials properties: low iron content glass, ultraviolet-resistant plastic sheeting, fiberglass, and reinforced plastic with “TEDLAR” coating.
(Eds) (1978), Mark’s Standard Handbook for Mechanical Engineers, McGraw-Hill, New York, NY

In order to guide the reservoir evaluation and hydrocarbon exploration of study area, it is therefore necessary to determine how high temperature and overpressure affect the physical properties of reservoir and their influence degrees.
Effects of High Temperature and Overpressure on Deep Reservoir The physical properties of deep reservoir in Qiongdongnan basin are not only doubly controlled by sedimentation (including grain size, sorting features, compositions) and diagenesis (e.g., compaction, cementation, and dissolution), but also profoundly affected by high temperature and overpressure.
Effects of High Temperature on Deep Reservoir Physical Properties.
The most important impact of high temperature on reservoir physical properties lies in accelerating the decrease of primary pores.
Effects of Overpressure on Deep Reservoir Properties.

Bioplastics are characterized by desirable mechanical properties such as tensile strength and elongation at break.
Bioplastic fertilizer may find application for mulching, so the mechanical properties, such as tensile strength and elasticity, will significantly affect the slow-release behavior.
If the mechanical properties are low, the bioplastics are so easily degraded that the active component of the fertilizer will have no control to release.
Rosa, Key factors for activated carbon adsorption of pharmaceutical compounds from wastewaters: A multivariate modelling approach, Water 14 (2022) 166
Santosa, Triyono, Effect of glycerol on mechanical and physical properties of silver-chitosan nanocomposite films, IOP Conf.

Moreover, microbubbles have unique properties like “self-pressure”, “negative charge” etc., so they attract positively charged particles namely dust, then send them towards the water surface (Fig. 1).
Microbubbles, mechanical effects and temperature effects are three parameters affecting directly washing efficiency [7,8], and microbubbles also are the major factor.
These phenomena bring mechanically effects to the affected environments.
In discussion, mechanical soaking time was the most influential parameter in the mechanical purity.
Adjusting the mechanical soaking time from level 1 to level 2 caused the significant change of the mechanical purity.