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If motors of out of step have large number, their dynamic process will affect the stability of system.
Dynamic characteristics of motor under disturbance Rotor motion equation of induction motor: (1) Where: is mechanical torque which , is electromagnetic torque,.The slip corresponding the maximum electromagnetic torque is .
Therefore, according to the slip coherent properties, it is need to divide into motors in normal operation and motors of out of step for load modeling.
The paper set the static load and motor mechanical load factor as typical parameters,only identifying the parameters as follows:,The limit of the parameters are,,,,,,,; Load parameter identification is a optimization process, which hope to find a set of optimal parameters to make the model’s response be possible consistent with the actual measurement process.

NUMERICAL ANALYSIS OF NATURAL CONVECTIVE HEAT TRANSFER OVER A VERTICAL CYLINDER USING EXTERNAL FINS Anwesha Panigrahi1,a*, D.P.Mishra2,b, Deepak Kumar3,c 1,2,3 Department of Mechanical Engineering Birla Institute of Technology, Mesra, Ranchi-835215, Jharkhand, India aanwesha199021@gmail.com, bdpmishra@bitmesra.ac.in, cdeepak.bit2013@gmail.com, Keywords: Natural convection, Fins, Cylinder, Nusselt number Abstract The present numerical study deals with the natural convection heat transfer on the surface of a vertical cylinder with external longitudinal fins.
The addition of fins increases the surface area and also rate of heat transfer but the increment is up to a certain limit beyond which they will resist the air flow and cause boundary layer interference that will e\affect the heat transfer adversely.
Water at supercritical pressure has a distinct feature of creating the natural convection in it due to buoyancy forces because of the difference in densities at different points of its flow cross section and this factor exerts an influence of the process of heat transfer in the core of the nuclear reactor.
The fluid properties are constant except density which is a function of temperature. 4.
[5] Leung C.W., et al., “Heat Exchanger Design: Thermal Performances of Rectangular Fins Protruding from Vertical or Horizontal Rectangular Bases”, Applied Energy, 123-140, (1985) [6] Yüncü H. and Güvenc A., “An Experimental Investigation on Performance of Rectangular Fins on a Vertical Base in Free Convection Heat Transfer”, Heat and Mass Transfer, 409-416, (2001) [7] Yüncü H. and Mobedi M., “A Three Dimensional Numerical Study on Natural Convection Heat Transfer from Short Horizontal Rectangular Fin Array”, Heat and Mass Transfer, (2003) [8]Jeong et al., “Natural convection heat transfer estimation from a longitudinally finned vertical pipe using CFD”, Mechanical Science and Technology, 1517-1527, (2009) [9] A.

However, the double aging heat leads to a very high improvement of mechanical properties [9].
Djemmal, Study of mechanical and electrical properties of AlMgSi alloys, Ann.
Guemini, Study of mechanical properties and precipitation reactions in low copper containing Al-Mg-Si alloy, Arch.
Serradj, Effect of natural and artificial aging on the mechanical properties of two Al-Mg-Si alloys, Inter.
Xu, Effects of the Mg/Si ratio on microstructure, mechanical properties and precipitation behavior of Al-Mg-Si-1.0wt%-Zn alloys. 

The swelling potential is influenced by factors such as clay mineral composition, dry density, void ratio, cementation, and soil macrostructure.
Particle size curve The geotechnical properties of the soil materials are presented in Table 2.
Assadi-Langroudi, Structure-based hydro-mechanical properties of sand-bentonite composites, Engineering Geology, Vol. 235, (2018) 53-63, ISSN 0013-7952, https://doi.org/10.1016/j.enggeo.2018.02.002
Sabtan, Geotechnical properties of expansive clay in Tabuk, S.
Bentley, Shrinkage and Swelling Characteristics, in Soil Properties and their Correlations.

The sustainable carrying capacity of the “tourism environment” is “influenced” by many factors, including “economic, natural, and social” aspects.
These papers emphasize the importance of considering multiple dimensions of sustainability, including ecological, social, and economic factors, when evaluating technologies or alternatives.
These efforts require a comprehensive understanding of the contributing factors and potential barriers to achieving clean energy objectives.
These factors are crucial in decreasing “greenhouse gas emissions,” promoting resource efficiency, and “mitigating climate change.”
Evaluation of antioxidant and antimicrobial properties of silver nanoparticles biosynthesized using weed (Dactyloctenium aegyptium) extracts for sustainable environment, agriculture, and ethnomedicine.

The composition of plant extracts can vary depending on environmental and seasonal factors, affecting reproducibility.
Dried leaves were then finely powdered using a mechanical grinder.
The plot indicates a synergistic effect between these two factors.
Nzeako, Evaluation of antimicrobial properties in traditional foods, Foods. 12 (2023) 3442
Acharya, Antimicrobial and cytotoxic properties of metal-based nanoparticles, Sci.

So it is the key factor to take effective tunnel surrounding control technology for safety and effect of isolated island coal face.
Mechanical model and mechanical parameters.
With Mohr-Coulomb yield criterion to judge the damage of rock mass, the rock mechanical property parameters of coal rock mass model is shown in table 1.
Table 1 Coal petrography mechanical parameters lithology Thickness （m） Shear modulus （GPa） Bulk modulus (GPa) Cohesion (MPa) Internal Friction angle（°） Density (kg/m3) mudstone 7.2 3.47 6.08 3.5 30 2472 13-2 coal 0.9 2.01 4.9 1.25 28 1380 Chiltern mudstone 6.5 5.37 8.23 4.5 33 2472 13-1 coal 3.4 2.01 4.9 1.25 28 1380 Silt finestone 1.3 9.62 14.33 8.31 38 2520 Table 2 Rock mass mechanics parameters after slip casting reinforced Bulk modulus（GPa） Shear Modulus （GPa） Density （kg/m3） Internal Friction angle（º） Cohesion （MPa） Tensile Strength （MPa） 1.257 5.80 2243 29 1.0E6 0.83E6 Characteristic of surrounding rock stress.
It is shown as Fig.4 that bolt is affected by tension stress and bolt cable by pressure stress in bolt cable-mesh support.

Numerical Simulation on the Effect of Mist on Impingement Cooling of Double Chamber Model Guangjie Liu1, 2, a, Tao Xu1,b, Haichao Ge1,c, Zhenglei Yu1,d and Tatsuo Yoshino1,e,* 1 College of Mechanical Science & Engineering, Jilin University, Changchun, PR China 2 College of Computer Science and Technology, Changchun Normal University, Changchun, PR China a 756058599@qq.com, b 791181007@qq.com, c yuzl08@mails.jlu.edu.cn, d 905830811@qq.com, e yoshinojlu@sina.com * Corresponding author Keywords: Impingement cooling, Computational fluid dynamics, Cooling effectiveness, Double chamber model Abstract.
Although, the mechanical stresses experienced by the TP are within acceptable limits compared to other parts, high temperatures and large temperature gradients affect the structural integrity of these components, which makes TP a very critical component of a gas turbine in structural and thermal designs.
Assumption of the solid wall of the quarter torus is formed with a hypothesis of negligible thermal resistance by conduction, the thermal properties of the material were considered by Nimonic 263.
The convergence criteria of the steady-state solution are judged by the reduction in the mass residual by a factor of 6, typically, in 2000 iterations.

Moreover, it must exhibit sufficient mechanical strength to provide structural support during bone growth and remodeling.
The microcracks should not affect (positively of negatively) the biological performance of scaffolds but they certainly reduce scaffold's mechanical properties.
Another important factor related to the quality of the produced scaffolds with regard to their potential in biomedicine is the size of the pores as well as their interconnectivity.

These factors in combination with the heat expandable gasket, creates a high lateral compressive stress in the filter when seated in the filter bowl.
The thermal stress generated in a brittle ceramic body during heating is dependent on the material's physical properties [12].
Table 2 provides data on the general physical properties of the CS-X filter.
Physical Properties of CS-X Filter Material.
Field-testing of the new filter confirmed it has superior thermal-mechanical properties relative to PBA filters.