Search results

Nanotechnology exploits current progress in physics, materials science, chemistry and biotechnology to form novel materials that have unique properties significantly different from their bulk counterparts.
In physics and material science, nanoscience is most often associated with the behaviour of electrons and photons in nanoscale region.
From the past two decades, enormous efforts have been made to synthesize and characterize semiconductor materials of group II-VI, III-V, III-VI, and oxide-semiconductor materials.
The materials having no dimensions in the nano-scale region include bulk materials.
Tiwary, Microwave assisted synthesis of CdS nanoparticles for structural and optical Characterization, International Journal of Innovative Research in Science, Engineering and Technology, 3 (2014) 10670-10674

To avoid resorting to costly materials such as the Ni-bearing D5S, many attempts at improving the high temperature behavior of ferritic SGI have been carried out.
Therefore, carmakers are considering extending the temperature range of this material.
Rohrig, High-silicon nodular irons, Foundry Trade Journal. 146 (1979) 657–681
Menk, Cast iron alloys for exhaust applications, 10th International Symposium on the Science and Processing of Cast Iron, Mar Del Plata, Argentina. (2014)
Norell, High-Temperature Corrosion of Cast Irons and Cast Steels in Dry Air, Materials Science Forum. 369–372 (2001) 197–204

The interior wall coating is environmental benign material in building industry.
Introduction Interior wall coating is one of decoration materials widely used in buildings.
Most of the material contains petroleum-based solvents which emit volatile organic compounds (VOCs).
Materials and methods Materials: high quality starch(Wuming Starch Plant,Guangxi), kaolin(Maoming Xinli Mine Products Development Co., Ltd.
Journal of maoming university, 12(4):18-20. (2002)

Materials and Methods The material under study, as noted above, is an axially symmetric nano heterostructure β-CdS/ β-HgS/ β-CdS.
The imposition of a lateral electrostatic field on the β-HgS quantizing layer leads to a narrowing of the band gap of the layer material.
Mishra, Core-Shell Nanostructures: Perspectives towards Drug Delivery Applications, Journal of Materials Chemistry B, Manuscript ID TB-REV-06-2020-001559.R1, 2020, pp.1-105
Tkach, Electronic spectrum in a quantum double CdS/β-HgS/H2O cylindrical wire, Russian Physics Journal, 40, ( 5), pp.475-480, (1997)
Goldstein, Handbook of Nanophase Materials, CRC Press, 17 June, 1997, 382 p

Introduction Low plasticity at room temperature and under plastic working conditions as well as susceptibility to brittle cracking significantly limit the use of two-phase TiAl intermetallic alloys as construction materials [1÷8].
Materials and research methodology A two-phase Ti–48Al–2Cr–2Nb (at.%) alloy with chemical composition as specified in table 1 was used like the most representative one in the group of two-phase TiAl intermetallic alloys.
Edgar, Progress in structural materials for aerospace systems, Ac.
Smołka, Analysis of volume effects of phase transformation in titanium alloys, Journal of Materials Processing Technology, v. 53 (1995) 413-422
Blackburn, The science, technology and application of titanium alloys, eds.

Analysis on Structural and Electrical Properties of High and Low Density Eu-Doped Bi(Pb)-2223 Superconductor Nurbaisyatul Ermiza Suhaimi1,a, Azhan Hashim2,3,b*, Wan Aizuddin Wan Razali2,c, Siti Fatimah Saipuddin1,d, Norazila Ibrahim1,e 1Faculty of Applied Sciences, Universiti Teknologi MARA Shah Alam, 40450 Shah Alam, Selangor, Malaysia 2Faculty of Applied Sciences, Universiti Teknologi MARA Pahang, 26400 Bandar Tun Abdul Razak Jengka, Pahang, Malaysia 3Faculty of Plantation and Agrotechnology, Universiti Teknologi MARA Melaka, Jasin Campus, 77300 Merlimau, Melaka, Malaysia aersyamiza@gmail.com, bdazhan@uitm.edu.my, cwanaizuddin@uitm.edu.my dsitifatimah7020@uitm.edu.my, enoraz954@uitm.edu.my Keywords: Bi(Pb)-2223; Eu2O3 nanoparticles; Doping; High density; Low density Abstract.
Bi-2223 superconductor was considered to be among the most valuable superconducting materials for a variety of reasons, including their relatively high critical temperature (Tc) and high critical current density (Jc), which are very useful in the production of large magnetic fields, such as in particle accelerators and the medical field, where magnetic resonance imaging (MRI) is used, as well as in many electrical power appliances where energy losses can be reduced with the help of these materials [1,2].
The influence of doping materials like Ce [5], Sm [6], Ni [7], Dy [8] and GO [9] on the Bi-based superconductors has been reported by various authors.
Materials and Method The preparations of high and low density Bi1.6Pb0.4Sr2(Ca2-xEux)Cu3Oy where x = 0.00, 0.0025, 0.02, 0.05 and 0.07 was carried out by solid state reaction method using Bismuth (III) oxide, Bi2O3 (99.99%), Lead (II) oxide, PbO (99.90%), Strontium carbonate, SrCO3 (99.99%), Calcium carbonate, CaCO3 (99.00%), Copper (II) oxide, CuO (99.00%), Europium (III) oxide nanopowders, Eu2O3 (99.50%) and Sucrose Crystalline, C12H22O11.
Shah, “Effect of substitution of Ce on superconducting properties of Bi1.7Pb0.3Sr2Ca2−xCexCu3O10+ δ system,” Pramana-Journal Phys., vol. 58, no. 2212, pp. 871–875, 2002

Osinowo et al. [14] took a different approach by developing a low-cost pyrometer using locally sourced materials.
The design employed a simple resistor-potentiometer network for current regulation and analog-to-digital conversion, confirming that a cost-effective and accurate sensor could be produced with locally sourced materials and basic electronics, offering a reliable alternative to more expensive commercial sensors.
The total project cost, encompassing one-time materials and a multimeter for accurate measurement, amounted to approximately $123.84.
Kolawole, Development of a Low-Cost Pyrometer using Locally Sourced Materials, IJSRD-Int.
Vidal, Design of a Low-Cost Sensor for Solar Irradiance, Engineering, Environmental Science (2014), Corpus ID: 21511427.

Plant material:The dried whole plant of P. zeylanica were collected in August 2009 YunNan province, China .
X.Tan,Q.Wu:Journal of chinese pharmaceutic sciences.

So using the technology of birth and death is better than using ‘empty element’ and changing the type of material to simulate the excavation and support of tunnel. 3 Finite element analysis of geostress 3.1 Model parameters.
Application of Steel fibre reinforcedsprayed concrete to a deep tunnel in weak rocks Journal of Coal Science &Engineering (China)[ J]. 2002,18(2) :49-54.

The Truss Structural Optimization Design Based on Improved Hybrid Genetic Algorithm Fengguo Jiang1,2,a , Zhenqing Wang1 1 School of Civil Engineering, Harbin Engineering University, Harbin,Heilongjiang 150001, China 2 School of Civil Engineering, Heilongjiang Institute of Science & Technology, Harbin, Heilongjiang, 150027, China ajiangfg123@yahoo.com.cn Keywords: genetic algorithm; gradient algorithm; hybrid genetic algorithm; structural optimization.
Structural optimization calculation example Super quiescent plane truss showed as figure 1, elasticity modulus is , material density is,the maximum allowable stress is , the maximum allowable displacement is,each strut section area is not less than,. try to optimize design on the structure.
Improve Adaptive Genetic Algorithm,[J].China Academic Journal Digest,1998,11(22):120-126P(in Chinese) [9] Michalewicz Z,et al.