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It was mentioned in the literature[10], HY zeolite catalysts had more acidity, so raw materials cracked further.
The hydroxyl at 3650 cm-1 can react with macromolecules of adsorbed materials.
Through the orthogonal test, the effect of raw materials and operating conditions to the reaction results was considered.
Percent conversion of heavy oil and selectivity of diesel were mainly affected by concentration of liquid raw materials, and the percent conversion was high at 30wt% level, so 30wt% was the best concentration of liquid raw materials.
Chemical Engineering Science, 1999, (54): 2773-2779 [11] K.H.

Materials and methods Animals and diets Purebred Jinhua and Landrace piglets were used (18 gilts of each breed, weaned at 28 days of age), after weaning, they were allocated to two groups according to breed.
Journal of Dairy Science 1993, 76, 3897-3931
Journal of Animal Science 1972, 35, 794-800
Journal of Animal Science 1988, 66, 1643-1655
Journal of Animal Science. 1999, 77: 1442-1466

As a discipline rooted in mathematics, physics and materials science, mechanical engineering has evolved into a multidisciplinary field with applications ranging from medicine to nanotechnology, solving modern – day challenges across diverse sectors [2], [3].
VR labs provide a safe, cost-effective, and accessible alternative to conventional laboratory experiments, allowing students to perform simulations without risk or waste of materials [34].
VR technology, by its nature, requires significant changes in traditional teaching methods and materials, which may get very time-consuming and difficult.
Wang, “Use of Virtual Reality Technology for Learning Mechanical Skills,” Journal of Computer Science Advancements, vol. 2, no. 5, pp. 259–272, Oct. 2024, doi: 10.70177/jsca.v2i5.1323
Guvhu, “A Framework for the Implementation of Virtual Reality (VR) in the Higher and Tertiary Education Sector in Zimbabwe,” International Journal of Research and Innovation in Social Science, vol.

In order to replace these materials and new applications, many research programs to study the mechanical behavior of these materials has shifted.
In adequate method of predicting the mechanical behavior and fatigue life of composite materials has caused that designer exhibited the relatively high safety factor for fatigue design of composite materials, hence Most of the structures made ​​of composite materials with higher capacity needs to be designed.
Composite materials are non-homogeneous and anisotropic and their behavior compared to homogeneous materials like metals and isotropic is much more complex.
References [1] Development of micro-mechanical model to approach the fatigue life of composite materials, Aerospace Engineering master's thesis, Islamic Azad University, Science and Research [2] Zabihpoor M., Adibnazari S., Simulation of fiber/matrix deboning in unidirectional composites under fatigue loading, Journal of Reinforced plastics & Composites, 26(8), 743-760(2007) [3] Failure of layered composite materials under flexural fatigue loading, Aerospace Engineering doctoral thesis, Sharif University of Technology [4] Amiri.
K, “Experimental and Finite element Analysis Approach for fatigue of unidirectional fibrous composites”, Journal of Applied Mechanics and Materials, Vol 87, P136, Applied Mechanics and Manufacturing Technology, 2011-09-11 [5] Amiri.

Adding polypropylene fibers can inhibit the process of cracking and improve the fracture toughness of cement-based materials.
Diagram of Link10 The Element for Fiber Fiber is a material with only axial stiffness.
Journal of Yunnan Agricultural University, 2007, 22(1): 155-158.
Journal of Harbin Institute of Technology, 2007, 39(2): 232-234.
Journal of Jiangsu University (Natural Science Edition), 2003, 31(6): 726-730.

Two materials have been used for all the elements of the centrifugal fan impeller: steel and aluminium.
· Applying the material.
Two materials have been used: steel with density of 7860 kg/m3 and aluminium with density of 2710 kg/m3, resulting thus the blade weights presented in Fig. 2.
Zahariea, Comparative Study of Blade Shape Design of Centrifugal Fan Impeller, Applied Mechanics and Materials.
Karuppa, Numerical Design and Parametric Optimization of Centrifugal Fans with Airfoil Blade Impellers, Research Journal of Recent Sciences. 1, 10 (2012) 7-11

Research on the advancement of juicer technology has been ongoing, with a primary focus on material science and efficiency.
Materials and Methods 3.1 Materials 3.1.1 Material of Transmission Shaft In the market, there are various materials available for manufacturing the key components of a small household juicer.
To ensure optimal performance, it’s important to choose materials that possess strong mechanical properties.
Compared to other materials used in Fused Deposition Modeling (FDM), ABS offers excellent mechanical properties [34].
[15] Jiang, Xiaowei, Design and Research on Multi-function Juice Extractor, Advance Journal of Food Science and Technology. (2014) 6(6): 774-779. 10.19026/ajfst.6.109

Risk Materials.
Once accidental leak occurred in a factory, and the risk materials were spreaded, the pollution level of the receiving water can be influenced directly by the amounts of the risk materials.
The storage tank is an elementary unit to store risk materials.
Pipeline is the effective carrier to transport hazard materials in factories.
Journal of Basic Science and Engineering, 2003, 11(3), p. 266-273, in Chinese

Heat preservation time on the properties of red mud lightweight insulation brick Ma Long1, Li Guozhong1,a*,Hu Jianrui2 1Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, School of Materials Science and Engineering, University of Jinan, Jinan 250022, China 2Ji’nan Military Region Air Command, Jinan 250022, China amse_ligz@ujn.edu.cn, *correspondence author Key words: red mud, lightweight insulating brick, heat preservation time Abstract.
Table 4 The proportion of raw materials Red mud[g] Fly ash[g] Bentonite[g] Pore-forming agent[ml] Fluxing agent[g] Water[ml] 46 39 15 450 5 38 Results and discussion The heat preservation time has great influence on performance of red mud lightweight thermal insulation material.
In the high temperature sintering process, materials in the body generated crystal particles with better mechanical properties such as mullite.
References [1] Xiangli NAN, Tingan ZHANG, Yan LIU et al: JOURNAL OF PROCESS ENGINEERING Vol. 10(1) (2010), p. 264 [2] Xiangli XIE, Linjiang WANG, Jianxin ZHAO et al: JOURNAL OF GUILIN UNIVERSITY OF TECHNOLOGY Vol. 28(2) (2008), p. 196 [3] Peiwen LU: Elements of Inorganic Material Science (Wuhan University of Technology Publications, China 1996)
[4] Xuanye ZHAN: Sintered Brick Manufacturing and Product Property (Chinese Building Materials Industry Publications, China 2010).

Ultrasonic assisted machining (UAM) is an efficient nontraditional machining operation for brittle, hard-to-cut and poor-machinability materials.
Most of the above ultrasonic setups are designed for a special condition (certain geometry and workpeice) and are not efficient when workpeice material or dimensions are changed.
Lee :Design of tool holders for ultrasonic machining using FEM,Journal of Materials Processing Technology,37 (1993) 801 8801
Akbari, :Ultrasonic-assisted drilling of Inconel 738-LC, " International Journal of Machine Tools & Manufacture 47 1027–1033, (2007)
[4] Javad Akbari, Hassan Borzoie,:Study on Ultrasonic Vibration Effects on Grinding Process of Alumina Ceramic (Al2O3)," World Academy of Science, Engineering and Technology 41, (2008)