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Numerous factors, including the calibre of the component materials, the manufacturing process used, the length of the curing period, and the shapes and sizes of the blocks, affect the quality of sandcrete blocks [8-11].
Hence, there is a need for further studies on how RHA fineness, RHA contents, and prolonged curing age affect the properties of hollow sandcrete blocks.
Oduoye, Mechanical properties of high-performance concrete with guinea corn husk ash as additives, LAUTECH J.
Karim, Mechanical Properties of Brick Aggregate Concrete Containing Rice Husk Ash as a Partial Replacement of Cement, J.
Islam, Comparative study of pozzolanic and filler effect of rice husk ash on the mechanical properties and microstructure of brick aggregate concrete, Heliyon 5 (2019) e01926

Moreover, after the treatment, appropriate tests proved that neither were the physical and mechanical properties of the wood altered nor did the wood suffer any deformation or movement of any kind [3].
In the joists where rot damage on wood was concentrated, the mechanical properties and the residual resistance were low and unknown.
According to the intervention criteria of maximum health and minimum change explained before and taking into account all the factors and conditions concerning the building, the use of microwaves to treat timber against wood boring insects was considered an ideal solution.
Vinde, Microwave Modification of Wood Properties: Improvements in Wood Permeability, 31st Annual Meeting of The international Research Group on Wood Preservation, Section 4.
Processes and Properties (2000)

Introduction The very different quenching rates used in the production of ribbon and bulk metallic glasses, respectively, infer distinctly different amounts of free volume [1 - 3] and/or of local internal stresses [3 - 5], which are commonly expected to show up in different kinetics of structural relaxation (SR) affecting several physical quantities like viscosity, diffusivity, electrical resistivity, magnetic properties, or elastic modulus and damping.
The reversible SR can be recognized in the mechanical loss curves measured after completion of the irreversible SR, e.g. in the cooling runs; reversible SRs produce nearly exponential increase of the mechanical loss at more elevated temperatures.
The Pd alloy shows a continuous increase and amplitude dependence of the mechanical loss with increasing εpl up to 20 % (not shown also).
Examples for the effect of plastic deformation by cold rolling on the mechanical loss in the Zr-based bulk alloy.
The reversible SR follows the KWW kinetics with a stretching factor β ≈ 0.31, indicating a hierarchical nature of relaxation processes.

The efficiency of the slurry during CMP process was known to be decided by the type and properties of abrasive, pH, and the stability of slurry, etc [8].
The diluent covers the surface of precursor during mechanical milling and therefore also improves the pulverizing efficiency by blocking the mechanical contact between precursors.
From Fig.5, it can be concluded that the finer abrasive causes the higher removal rate of SiO2 and it means the contacting area between abrasive and oxide film is more important factor for the removal of SiO2.
On the other hand, the indentation effect by coarser particle should more seriously affect the Fig. 3.
Iler: The Chemistry of Silica; Solubility, Polymerization, Colloid and Surface properties, and Biochemistry (John Wiley & Sons Inc., New York 1979)

Filatov et al. have found that outstanding mechanical properties of Al alloy system with minor rare earth elements would be improved greatly[1], such as the Al alloys with Sc has got more attention to international materials field, which were considered as a new type structure material with excellent properties, especially high strength, high toughness, anti-heat and anti-corrosion specialty[2].
Nie et.al found that Er in alloy can play an important role like that of Sc and Zr, which could optimize grain structure, and improve comprehensive mechanical properties, thermal stability and weldability.
Al-Mg-Er, Al-Zn-Mg-Er and Al-Mg-Li-Zr-Er alloys have successfully developed in the same direction[5-7].The properties of Al alloys with Er depend on solution at elevated temperature, also some expecting phases formed during subsequently solidification, all related with thermodynamic properties.
Temperature affects enthalpy less intensively, namely as temperature changing greater, enthalpy changing less.
There are some key factors, such as warp of atom radius, electronegative and electron density between Al and rare earth elements.

Several factors that may affect the stiffness results of the current study need to be pointed out.
First, the material properties of a standard composite femur were used instead of those of femur from actual patient.
Although the initial stiffness of a femoral construct is considered an important contributing factor to bone healing, the facilitation of bone healing also depends on many factors such as soft-tissue attachment, stress across the bone, and blood supply to bony fragment.
Further investigations for the above-mentioned factors deserved to be conducted.
Brown, Structural properties of a new design of composite replicate femurs and tibias.

Study on 4Cr9Si2 Martensitic heat-resistant steel in CWR Jianghua Huang 1, a, Jinping Liu 1, Baoyu Wang 1, Zhenghuan Hu1 1School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 10083, China ahjh79303416@126.com Keyword: 4Cr9Si2 Martensitic heat-resistant steel, CWR, FEM, thermal-mechanical coupling Abstract. 4Cr9Si2 Martensitic heat-resistant steel is inlet valve and the exhaust tappet materials.
Has high temperature resistance, corrosion resistance, wear-resistant properties. its high chromium content, Silicon content are reached 2%~3%, so its rate of work hardening is larger, alloy content over 10%, so it is a more difficult forming high alloy steels. 4Cr9Si2 after quenching and tempering, with strong strength and toughness, high harden ability of it, 4Cr9Si2 are generally used for manufacturing automobile engine intake valve and exhaust valve Rod [1].
(a) (b) (c) Fig.2 Forming process of the rolled piece: (a) knifing zone; (b) sketching zone; (c) sizing zone Analysis of the central porosity Cross-Wedge Rolling is a plastic forming technology of high efficiency, low consumption, but, because of its central porosity, surface spiral and necking had affected the scope of its usage.
Fig.3 Work piece with a central porosity Fig.4 Location of point tracking in the billet This article uses widely Cockcroft and Latham’s damage factor to study central defects in Deform-3D, the expressions as below [7]: (4) —— maximum stress； —— equivalent stress； —— equivalent strain； C —— material parameter.
[4] Fengshan Du, Xuetong Li, WANG Minting, 3D coupled thermo-mechanical nonlinear FEM simulation of cross wedge rolling [J], Chinese Journal of Mechanical Engineering, 2002 [5] Jin Zhou, Zhejiang Han, Baicheng Liu, et al.

For evaluating the effect of laser application in real time and ensuring the optimal effect in LITT, exploration the changes of optical properties and temperature distribution in tissue, and their correlation are indispensable.
Previous studies have proved that the optical properties of biological tissue are affected by thermal coagulation.
The aim of the present study was to find the variation tendency of the reduced scattering coefficient on fresh porcine liver in vitro during LITT, and to explore the correlation of optical properties and temperature.
Discussion Existing studies show that the optical properties of biological tissue will be influenced by thermal effects.
In contrast to the scattering coefficient, the absorption coefficient changes slightly[10-12], anisotropy factor is approximately a constant[10].

This is without factoring in the scale layer on the drying cylinder surface.
Analysis of Disturbance Influence on Water Ring’s Movement and Heat Transfer Properties.
The factors influencing the stability of liquid membrance include and. represents the influence of inertia and viscosity.
The siphon clearance directly affects the quantity of condensate water in the drying cylinder.
Based on steam properties listed on a table: the h2=2 733.81kJ·kg-1 when the saturated steam in drying cylinder was 140℃; Inserting h2=2 733.81kJ·kg-1; c1=0; c2=50m·s-1 into formula (4), produces the following result: h1=(2 500÷2)+2 733.81×103=2 735.060 kJ·kg-1.

However to the best of authors’ knowledge, this will be the first study that considers the viscoelastic behavior of thin plates of uniformly varying cross-section, using four-parameter mechanical model to simulate the viscoelastic behavior.
Four-nodded linear rectangular master element as illustrated in Fig. 2 is used with a parent shape function After simplifying the functional with respect to nodal variables, the element matrix includes the variable cross-section properties of the viscoelastic plate is derived.
Due to the symmetry, the computations are carried out for a quarter of simply supported plate as illustrated in Fig. 3 with the following geometric properties: Length of the plate = 4 m, Width of the plate = 4 m.
The following material properties are used: E = E1 = 3x107 kPa, η = η1 = 3x107 kPa s, Poisson’s ratio ν = 0.3.
This ratio is one of the most important factors affecting the viscoelastic behavior.