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Preparation of nanosized materials.
In order to study the efficiency of different sensing materials in the catalytic oxidation of TMA, a great deal of nanosized materials and their compound bodies were prepared.
The CTL spectra of TMA on various sensing materials were different.
Effect of surface temperature of nanosized-materials on the CTL intensity.
Zhang: Chinese Journal of Analytical Chemistry 32 (2004), P. 25 [19] K.W.

Effect of High-energy Ball milling to Powders on Microstructure and Physical Properties of Al-50Si alloy Lijun Zhanga, Jingpei Xieb, Aiqin Wang Materials Science and Engineering School of Henan University of Science and Technology, Luoyang, 471003, China aexceley@163.com; bxiejp@mail.haust.edu.cn Keywords: high-energy ball milling; Al-50Si alloy; physical properties Abstract: Al-50Si can be fabricated with a method in which air-atomization is followed by vacuum canning hot-pressing process.
The second is that this kind of alloy is the lightest one using in the electronic packaging materials which has excellent comprehensive.
As we know, the tensile strength of materials are decided by the size of the grains.
Proceedings of PRICM3 on Advanced Materials and Processing, 1998, Vol. ( 2) , p1681~ 1686 [3] German R M，Hens K F Johnson J L Powder metallurgy processing of thermal management materials for microelectronic applications[J]．International Journal Powder Metallurgy,1 994, 30(2)：205
Advanced Materials&Process es, 20003: 36-39

Zinc chromite (ZnCr2O4) ceramic spinels are particularly used as catalytic materials [1], humidity sensors [2] and as magnetic material [3].
All chemical materials were purchased from Sigma-Aldrich, and were used without further purification.
Materials Sciences and Applications 2011, 2, 1584-1592
Journal of Nanoparticle Research 2008, 10, 1063-1069
Science of Sintering 2004, 36, 189-196

Engineering ceramic are special hard and brittle materials, their surface properties are very sensitive to the state of the surface stress, the compressive residual stress can be improved part strength and surface properties in a certain extent, especially can increase breaking strength, tensile residual stress in the opposite role.
Introduction Engineering ceramic materials have high strength, high hardness, high chemical stability,they are widely used in electronics, machinery, chemical industry, communications and other fields.
This is because the hardness in green silicon carbide, white corundum grinding wheel and grinding material is close to grinding materials, abrasive cutting action is very weak, in the process of friction and collision ,abrasive is easily broken and detached from the wheel surface, the surface temperature is hard to raise, mainly by extrusion forming debris.
The hardness in diamond grinding wheel is much higher than the grinding specimen, the cutting effect is dominant, and the abrasive grain is not easy passivation, so the residual compressive stress is small.(3) under the same experimental conditions, the measurement residual compressive stress of diamond grinding wheel on three different ceramic materials grinding HP-Si3N4, Al2O3, ZrO2, the results derived compressive residual stress in ZrO2 is greatest, HP-Si3N4followed and Al2O3 minimum, therefore, ceramic grinding surface residual stress sensitivity with different materials affect is higher than it in different grinding conditions.
International Journal of Advanced Manufacturing Technology.

of Basic and Applied Sciences, Egypt-Japan University of Science and Technology, New Borg El-Arab, Alexandria 21934, Egypt 8Fabrication Technology Researches Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and technological Applications (SRTA-city), Borg El-Arab City, Alexandria 21934, Egypt.
Electrospinning (ES) is a versatile and simple technique used for fabrication of fibers with diameters down to few nanometers from various materials such as polymeric, ceramic, metallic and composite materials.
Materials and Methods.
The model assumptions were - laminar and steady flow - Temperature independent properties for both fluid and solid materials - No heat losses from the system walls to the boundaries.
Drioli, “A review of polymeric nanocomposite membranes for water purification,” Journal of Industrial and Engineering Chemistry. 2019, doi: 10.1016/j.jiec.2019.01.045

Experimental Procedures This study used Ti, B4C, Ni, Al powders as raw materials, and their specifications and the orgins were shown in Table 2.
Porous TiC-TiB2-NiAl composites could be produced by SHS using Ti, B4C, Ni, Al powders as raw materials and a large number of pores distributed on the matrix.
Zhang: Metal Materials and Metallurgy Engineering Forum Vol 36 (2008), p. 3.
Dong: Materials Science and Engineering of Powder Metallurgy Forum Vol 14 (2009), p. 52.
Miao: Journal of Inorganic Materials Forum Vol. 15(2000), p. 884.

The information technology is used to extract growth character parameters of poplar, and the neural networks is used to establish the relational model of the character parameters and wood materials and wood production of poplar, these models are used to monitor and analyze growth situation and materials of poplar and potential utilization value, so can correctly assess the reasonable use of the poplar, meanwhile provide the basis for the oriented cultivation of poplar management, which have important theory value and practical significance.
This requires timely monitoring, forecasting and analyzing during the course of growth conditions, poplar material and standing potential value[1].
Using these models, we can analyze and assess the growth status of poplar materials and their potential processing and utilization of the value, and provide guidance for the managers, as well as provide the base for poplar management and oriented cultivation.
References [1] Drone K＆Rudemo M．Stem number estimation by kernel smoothing of aerial photos．Canadian Journal of Forest Research.1997,26:1228-1236
[5] Culvenor D S．TIDA：An algorithm for the delineation of poplar clowns in high spatial resolution remotely sensed imagery．Computers＆Geo science．2002．28：33-44

FLAC3D software mostly used in simulating the mechanical behavior of geotechnical engineering geology materials, especially simulating the plastic flow after the rock material reaching yield limit [8].
Acknowledgements This work was financially supported by the Henan Science and Technology Public Relations Project (102102210372).
[3] Chuqin Lin: Journal of Western Exploration Engineering, 2001, 71(4):43~44(in Chinese)
[4] Yongfu Xu, Guanjun Chen: Shanxi Transportation Science technology, 1998, (4): 23-28(in Chinese)
[5] Jiahuan Qian, Xuede Qian, Weibing Zhao: Chinese Journal of Geotechnical Engineering. 1986, 8(6): 1~17.

Review on Artificial Neural Network and Its Application in Foundry Dequan Shi, Guili Gao College of Material Science and Engineering Harbin University of Science & Technology, Harbin, P.
The results showed the system reduced the consumption of raw materials and energy, decreased the rejected production and improved the casting quality.
Cui, “Prediction of Al alloy ingot crack tendency based on artificial neural network,” The Chinese Journal of Nonferrous Metals, vol.18, pp. 1769-1705, September 2008
Li, “The network for fast testing chemical compositions of cast iron,” Journal Harbin Univ．Sci．＆ Tech., vol.6, pp. 53-56, February 2000
Su, “Prediction model of silicon content in hot metal using optimized BP network,” Journal of Iron and Steel Research, vol.19, pp. 60-63, November 2007

Introduction In recent times, for the development of MFFL and plasma display panel (PDP) technology, new quantum cutting (two-photon luminescent) phosphors are becoming essential for the realization of highly resourceful luminescent materials under VUV excitation.
Materials and Methods The overall synthesis process is illustrated in the following flow chart (fig.1).
Wu, Site occupancy and luminescence properties of Eu3+ in double salt silicate Na3LuSi3O9, Optical Materials Express, 8 (2018) 736-743
Koscielska, From Structure to Luminescent Properties of B2O3-Bi2O3-SrF2Glass and Glass-Ceramics Doped with Eu3+ Ions, Materials, 14 (2021) 4490
Nayak, Phase evolution, powder morphology and photoluminescence exploration of borohydride derived red-emitting Eu3+ doped ZnO nanophosphors, Materials Science in Semiconductor Processing 133 (2021) 105969