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This roaming system mainly describes the establishment of the virtual campus model, and server hierarchy design, and Android mobile phone positioning, and the key technology of query realization in the android mobile system.
At the same time, in order to enhance the visual effect, a light is added in the scene, and the material model is set, and it mainly related to glLightfv() and glMaterialfv() function.
Light and material are of ambient light color, mirror reflection, diffuse reflection attributes.
Light colors defined the quantity of the material color representation in the light incidence reflection, material color represents in light reflectance, three Primary Colors reflects quantity, so the observed campus three-dimensional color model depends on the material and Light color.
Journal of Biomedical Engineering Research.2008, 27(2):107~110

This model was completed with the Mie-Grüneisen Equation Of State (EOS), used to calculate the hydrostatic material behaviour in shock-compressed solids [13].
Johnson-Cook and Mie-Grüneisen material parameters for Al and Al alloy were taken from [12,14].
Simulations showed that the initial particle temperature has a key influence on porosity in 3D.
Villafuerte, Modern Cold Spray: Materials, Process, and Applications, first ed., Springer, 2015
Nooririnah et al., Experimental and SPH study of cold spray impact between similar and dissimilar metals, Surface Engineering (2014) [6] Yu, M., Li, WY., Wang, F.F. et al.

Annealing Effects on the Microstructure and Properties of Vanadium and Molybdenum Rich FCC High Entropy Alloy Madan Patnamsetty1*, Ari Saastamoinen1 and Pasi Peura1 1Materials Science and Environmental Engineering, Tampere University, Tampere, Finland *Corresponding Author: madan.patnamsetty@tuni.fi Keywords: High Entropy Alloys, Phase stability, Intermetallic phase, Annealing, Face Centered Cubic (FCC), Microstructure Abstract.
Introduction High entropy alloys (HEAs) are new class of multi-metallic materials, which received significant attention due to their exceptional properties [1], [2].
It was found that atomic size is one of the key factor influencing the selection criteria of IM phases [9].
The raw materials were 99.9% pure element powders.
Metallographic samples were cut from the homogenized HEA ingot and annealed samples, and were molded into the epoxy resin for the material characterization.

Series: Materials Science and Engineering, vol. 849, no. 2020, pp. 1-9. https://doi.org/10.1088/1757-899X/849/1/012027, 2020
Tripura, "Predicting and evaluating the engineering properties of stabilized fiber-reinforced rammed earth block," Construction and Building Materials, vol. 262, no. 2020, p. 120845. https://doi.org/10.1016/j.conbuildmat.2020.120845, 2020
Kenia, "Performance evaluation of human hair fiber reinforcement on lime or cement stabilized clayey sand," Key Engineering Material, vol. 668, no. 2016, pp. 207-217. https://doi.org/10.4028/www.scientific.net/KEM.668.207, 2016
Engineering and Technology, vol. 7, no. 3.12, pp. 201-204, 2018
Materials Engineering, vol. 8, no. 5, pp. 101-108. https://doi.org/10.5923/j.ijme.20180805.04, 2018

Comparison of the Fatigue Crack Propagation Resistance of αααα+ββββ and ββββ Titanium Alloys Matteo Benedetti Department of Materials Engineering and Industrial Technologies, University of Trento, via Mesiano 77, 38050 Trento, Italy matteo.benedetti@ing.unitn.it Keywords: titanium, α+β alloys, β alloys, fatigue crack propagation resistance, extrinsic mechanisms.
Emphasis is placed on microstructural parameters, which can be varied by processing, and their effects on the material inherent fracture properties, governing the resistance against microcrack propagation.
These microstructural gradients were obtained by heat treating only a portion of fine-grained plate material in the β single-phase field using a high-frequency induction coil.
Consequently, after stress redistribution and stabilization, the material within the notch plastic region deforms in an essentially elastic manner.
At any position in the notch plastic zone, the local stress range is approximately equal to the elastic range, but the peak stress is reduced as compared to the elastic solution owing to the material plasticization.

Hosien and Selim [7] worked on the effects of the geometric parameters of the solar chimney, weather conditions, and alternative outdoor cover materials on the performance of the solar chimney used for the natural ventilation of closed enclosures.
Selim, Effects of the geometrical and operational parameters and alternative outer cover materials on the performance of solar chimney used for natural ventilation, Energy and Buildings. 138 (2017) 355-367
[12] Qin, Di, Jiang Liu, and Guoqiang Zhang, A novel solar-geothermal system integrated with earth-to-air heat exchanger and solar air heater with phase change material—numerical modelling, experimental calibration and parametrical analysis, Journal of Building Engineering. 35 (2021) 101971
[13] Alimi, Sonia, et al., Performance investigation of an original hybrid solar façade system used for HDH desalination and building natural ventilation, Journal of Building Engineering. 42 (2021) 102515
[14] Soto, Andrés, et al., Simulation and experimental study of residential building with north side wind tower assisted by solar chimneys, Journal of Building Engineering. 43 (2021) 102562

Materials and Methods a.
Groundwater temperature Temperature is a key parameter among the physicochemical characteristics of water.
Saturation indexes The study of the saturation state of water with respect to certain minerals is a key tool in the understanding of the geochemical processes at the origin of acquired mineralization.
Journal of Materials and Environmental Science 6 (4): 1068‑81
Ecological Engineering & Environmental Technology 25. https://yadda.icm.edu.pl/baztech/element/bwmeta1.element.baztech-a612431b-2900-4641-8322-fc840585c7bb

Research on Variation Law of Void Ratio of ARAC-13 Kun Li1,2,a, Xin Huang1,b, Changshan Jiang2,c 1School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China 2China Airport Construction Group Corporation of CAAC, Beijing 100101, China alikun_thesis@163.com, b hx2000@ buaa.edu.cn, cjiangcs@cacc.com.cn Keywords: ARAC, grade, void ratio, asphalt aggregate ratio Abstract: Comparing with RAC-G, ARAC has a much better performance on resist fatigue cracks and reflective cracks which is more suitable to semi-rigid basement structure in China.
Introduction Process waste tires into rubber powder is one of the most common recycling ways, the rubber powder used in highway engineer most come from this way which can not only save resources and protect the environment, but also have good economic and social benefits.
Tab.1 Recommended grade range of ARAC in Arizona Sieve size (mm) 16 13.2 9.5 4.75 2.36 1.18 0.6 0.075 ARAC-13 100 80~100 60~80 22~42 12~32 - 8~12 0~3 Test materials The composition of stone size in experiment are 13.2mm-9.5mm, 9.5mm-4.75 mm, 4.75 mm-2.36 mm and 2.36 mm-0.075 mm.
AZ.US.2003 [2] JTG E42-2005, Test Methods of Aggregates for Highway Engineering[S] 2005.
In Chinese [3] JTJ052-2000, Standard Test Method of Bitumen and Bituminous Mixtures for Highway Engineering[S].2000, In Chinese [4] JTJ F40-2004.

%Al Alloys Jili Liu1, 2, a, Haiyou Huang1, b, *, Xu Xu1 and Jianxin Xie1, 2, c 1Key Laboratory for Advanced Materials Processing, University of Science and Technology Beijing, Beijing100083, China 2State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing100083, China ajili.liu123@163.com, b*huanghy@mater.ustb.edu.cn, cjxxie@mater.ustb.edu.cn Keywords: columnar grain, Cu-12wt.
The CGS is conducive to plastic deformation for materials along the growth direction of the columnar grains.
Increasing the processing temperature is an effective means to promote the workability of materials.
The aim of this work is develop a high efficient process for low-plasticity, hard-to-process materials.
The raw materials used to prepare the alloy were oxygen-free copper (99.95% purity) and electrolytic aluminum (99.99% purity).

The interest in this research area is twofold: To explore a strain range not hitherto characterized and modeled in depth and to develop very strong materials by a structural refinement where materials and process optimization is a key issue.
[20] G.Winther, in Proceedings: ICOTOM 12, International Conference on TEXTURES OF MATERIALS.
[36] R.D.Doherty, D.A.Hughes, F.J.Humphreys, J.J.Jonas, D.Juul Jensen, M.E.Kassner, W.E.King, T.R.McNelley, H.J.McQueen, A.D.Rollett, Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing.
[39] F.J.Humphreys, P.B.Prangnell, J.R.Bowen, A.Gholinia, C.Harris, Philosophical Transactions of the Royal Society of London Series A-Mathematical Physical and Engineering Sciences.
[42] W.Q.Cao, A.Godfrey, W.Liu, Q.Liu, Materials Letters.