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Materials and Methods The choice of LEDs based on GaP with an effective wavelength of 590 nm as the object of research in this work is due, in particular, to the fact that they are characterized by all the main types of radiative recombination observed for LEDs based on various semiconductor materials.
Hall, Luminescence and the light emitting diode: the basics and technology of LEDS and the luminescence properties of the materials, Elsevier, 2016
Engineering Sciences. 3 17 (2000) 112-116
Sumino, Mechanical properties and dislocation dynamics of GaP, Journal of Materials Research. 2 4 (1989) 355-360
Orlova Radiation model of light emitting diode based on AlGaInP heterostructures with multiple quantum wells, Advanced Materials Research, Trans Tech Publications. 880 (2014) 237-241.

The semi-rigid subgrade materials are currently and widely used in constructing the base course of highway in our country[1,2], which are usually in 2 types——gravel stabilized by cement or lime-fly-ash.
In allusion to the advantages and disadvantages of these two ones, a method has been presented in practice that the stabilized gravel aggregate by cement and fly-ash replaces the stabilized aggregate by cement or lime-fly-ash as the subgrade materials, and has acquired a favorable effect in practice[3,4].
[3] Xiaojian GAO, Yingzi YANG, Xuefeng KAN, Effect of Fly-ash on Differential Shrinkage Between the Outer and Inner Concrete, [J], Journal of Basic Science and Engineering, 2010, 18 (1): 91~96
[5] Fu-chuan WANG, Civil Engineering Materials, [M], China Building Materials Press, Beijing, 2001，43~54
[6] Research Institute of Highway in Ministry of Transport, Test Methods of Materials Stabilized with Inorganic Binders for Highway Engineering, [S], China Communications Press,2009.

Luckily, those materials with extraordinary high-temperature ductility are often found to be lightweight covering a wide range of magnesium, aluminium and titanium alloys.
Unhappily, there are some drawbacks, both from the material and the process sides, which hamper the progress on a larger scale.
Warm and elevated-temperature H/P forming operations are generally slow simply because the targeted materials exhibit their exceptional ductility (often referred to as superplastic or superplastic-like behaviour) at low strain rates.
Calibrating the stress/ strain curves of the material to Eq. 1 produced the fit shown in Fig. 6.
Khraisheh, Journal of Advanced Engineering Materials, Vol. 9 (2007), p. 777 [7] E.

Amounts of silicon and alumina elements are predominant in two kinds of raw materials.
Quartz minerals play a predominating role in two kinds of materials.
Iron tailings preparation of lightweight insulation building materials[J].Metal Mine,2007(05)： 75-77.
Journal of Minerals and Materials Characterization and Engineering, 2012,  11 (07):671-678
[12] GB 6566-2010, Building materials radionuclide limits[S]．Beijing：Standards Press of China, 2010.

Study on Extraction Technology and Stability of Melanin from Banana Peel Li-jing MIN1, a, Jing-fen LI1, b 1School of Life Science, Huzhou Teachers College, Huzhou, Zhejiang ,China aminlijing@hutc.zj.cn, bljfljf@hutc.zj.cn Keywords: Banana peel, Melanin, Extraction technology, Stability.
[Method] We used banana peel as raw material, the absorbance at 410 nm as the index, extracted melanin by base-acid method, and optimized the extraction technology by the single factor and orthogonal test.
Melanins and Their Possible Roles Through Biological Evolution[J].Advances in Space Research,1996,18(12):35-40 [2] FOGARTY R V,TOBIN J M.Fungal melanins and their interactions with metals[J].Enzyme and Microbial Technology,1996,19(4):311-317 [3] ALOIS A B,MICHAEL H W.Biosynthesis and functions of fungal melanins[J].Annual Review of Phytopathology,1986,24:411-451 [4] SELVAKUMAR P,RAJASEKAR S,PERIASAMY K,et al.Isolation and characterization of melanin pigment from Pleurotus cystidiosus (telomorph of Antromycopsis macrocarpa)[J].World Journal of Micro-biology and Biotechnology,2008,24(10):2125-2131 [5] GONCALVES R D C,POMBEIRO-SPONCHIADO S R.Antioxidant activity of the melanin pigment extracted from Aspergillus nidulans[J].Biological and Pharmaceutical Bulletin, 2005,28(6):1129-1131

It is widely used as the matrix of laser and other light-emitting materials [28,29].
In addition, Nd:YSAG, Nd:Y2O3 and Yb:Sc2O3 can also be used for laser gain medium ceramic materials.
Xu, Effect of heat-treatment temperature on upconversion luminescence of beta-NaYF4:Yb3+, Er3+ nano/microparticles, Wuji Cailiao Xuebao(Journal of Inorganic Materials) 28 (2013) 146-152
Yu, Investigation on crystallization kinetics and microstructure of novel transparent glass ceramics containing Nd:NaYF4 nano-crystals, Materials Science and Engineering: B 136 (2007) 106-110
Jiang, Recent development in reactive synthesis of nanostructured bulk materials by spark plasma sintering, Int.

Journal Citation (to be inserted by the publisher) Copyright by Trans Tech Publications A Deep Level Study of High-Temperature Electron-Irradiated n-Type Cz Silicon E.
Dept, KU Leuven, Kasteelpark Arenberg 10, B-3001 Leuven, Belgium, claeys@imec.be 3 Institute of Physics, National Academy of Science of Ukraine, Kiev, Ukraine, vova@neimash.kiev.ua Keywords: Czochralski silicon, high-temperature irradiation, oxygen thermal donors (OTD's), radiation defects, vacancy-oxygen complexes, Deep Level Transient Spectroscopy (DLTS).
Experimental matrix Material Oxygen Conc.
The corresponding results for the high oxygen (HO) material #1 are given in Fig. 3.
In case of #1, the dominant peak in the HO starting material corresponds to the OTD double donor level.

Table 3 shows the pipe materials used in this case study.
The von Mises stress analysis during this phase shows the redistribution of stresses within the material.
The maximum stress reached UTS limit of pipeline material, when the internal pressure is 11 MPa.
[2] Zhao, J, Yun-Rong Lv and Cheng, F.Y.: Standards and Method for Dent Assessment and Failure Prediction of Pipelines: A Critical Review,Petroleum Science, pp. 3029-3045, (2022)
C.: Numerical Assessment Of Subsea Pipeline Pressure Capacity Due To External Circumferential Semi-Elliptical Crack,International Journal of GEOMATE, pp. 138-145, (2023)

If an inter-storey drift limit of 0.2% is required as the maximum allowable residual drift, even when the RBRFs have yielded, this design using RBRFs would need to be improved by adding self-centering devices or by using a composite material such as shape memory alloys.
[4] Priestley, MJN, Overview of PRESSS research program, PCI Journal, 36 (1991): 50-57
[5] Priestley, MJN, Sritharan, S, Conley, JR, et al., Preliminary results and conclusions from the PRESSS Five-story precast concrete test building, PCI Journal, 44 (1999)
[13] Khoo, HH, Clifton, C, Butterworth, J, et al., Development of the self-centering Sliding Hinge Joint with friction ring springs, Journal of Constructional Steel Research, 78 (2012): 201-211
[17] Gardner, A and Goldsworthy, H, Experimental investigation of the stiffness of critical components in a moment-resisting composite connection, Journal of Constructional Steel Research, 61 (2005): 709-726

Acknowledgments The authors are grateful for the financial support provided by the Bavarian State Ministry of Edu-cation, Science and the Arts.
Shevchuk, Transient Laminar Conjugate Heat Transfer of a Rotating Disk: Theory and Numerical Simulations, in: International Journal of Heat and Mass Transfer, volume 47, no. 14, (2004), pp. 3577-3581
Harmand, Convective Heat Transfer on a Rotating Disk with Transverse Air Crossflow, in: Journal of Heat Transfer, volume 133, no. 2, (2011), p. 021702
Harmand, Convective Heat Transfer on a Rotating Finned Cylinder with Transverse Airflow, in: International Journal of Heat and Mass Transfer, volume 54, no. 21, (2011), pp. 4710-4718
Menter, Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications, in: AIAA Journal, volume 32, no. 8, (1994), pp. 1598-1605