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Online since: April 2021
Authors: Alla A. Gerasimova, Oleg Kobelev, Lilya M. Valeeva
Methods and Materials Modern reactor plants have a higher level of safety and technical and economic characteristics.
Vessel material - 15H2NMFA reactor steel.
Sim, Analysis of special foring processies for heavy ingost, International journal of Machine tools manufacturing. 2 (1988) 173-179
Chichenev, Designing lines for the production of composite materials based on the object-oriented approach, Heavy Engineering. 6 (1999) 16-20
Slobodyanik, Numerical modeling of the material layer upset forging with extrusion under the stiffening rib into the forging cavity, Springer International Publishing. 2 (2019), 1071-1077
Online since: June 2004
Authors: Robert S. Okojie
Introduction Internal stresses in semiconductor substrate materials have over several years been recognized to be deleterious to the yield and reliability of electronic devices and have remained a major research topic in silicon and the III-V semiconductors [1].
It further shows that off-axis wafers consistently exhibited larger initial radii of Journal Title and Volume Number (to be inserted by the publisher) 3 Sample Polytype/ Orientation ρ (Ω-cm) Ro (m) Rcool (m) 1/R (m-1) σ500C (MPa) 1 4H/n-type/8 o 0.022 20.72 26.92 -0.011 1.14 2 4H/n-type/8 o 0.01 13.17 15.56 -0.012 1.28 3 4H/n-type/8 o 0.022 22.66 36.37 -0.017 1.86 4 4H/n-type/0.2 o 0.007 6.87 6.41 0.01 -0.71 5 4H/n-type/.05 o 0.022 5.32 6.16 -0.027 1.80 6 4H/n-type/.17 o 0.065 5.83 7.13 -0.031 2.14 7 6H/p-type/3.5 o 1.7 19.11 22.82 -0.01 0.91 8 6H/p-type/3.5 o 2.3 14.6 18.01 -0.01 1.32 9 6H/p-type/3.3 o 2.7 16.12 23.73 -0.012 2.11 Table 1: Summary of changes in radius of curvature of the on- and off-axis 4H- and 6H-SiC substrates after thermal excursions to 500 oC and cooling.
Electronic Materials, 30(3), p. 188 (2001)
Ohring, The Materials Science of Thin Films, Academic Press, Inc., New York (1992)
Online since: October 2007
Authors: Jatindra K. Rath, Ruud E.I. Schropp, Hongbo Li, Ronald Franken, Robert L. Stolk
Schropp Surfaces, Interfaces, and Devices, Faculty of Sciences, Utrecht University P.O.
The structure of this material consists of nano-sized silicon crystallites, typically with sizes of tens of nanometer, embedded in amorphous silicon (a-Si:H) tissue.
More seriously, as can be seen from Fig.3b, there are stripe-like voids formed in the silicon layers originating from this area, through which conductive materials such as ITO from the sputtered front contact may defuse through them and make direct connection to the Ag/ZnO layer, and therefore, create a short circuit path for the n-i-p junction.
In the cases where these voids are not fully filled with ITO, or the conductive element is not ITO but another material with a lower conductivity, the minimum density for m to cause short-circuiting will increase.
Schropp, Journal of Non-Crystalline Solids, Vol. 352 (2006) p.1941.
Online since: November 2013
Authors: Xiao Ming Huang, Shi Jie Ma
The test road has total length of five kilometers and is divided into five sections, each section is designed with different materials combination and thickness, shown as Figure 1.
(2) Section S5, the structure with the thinnest HMA layer, had the highest strains, even though thick layers of pozzolanic bound materials underlay it.
Mishing, in: Diffusion Processes in Advanced Technological Materials, edtied by D.
Journal of Central South University: Science and Technology, 2007,38(6):1232-1238 (In Chinese).
Online since: February 2015
Authors: Simone Simões Amaral, Juliana Esteves Fernandes Cieslinski, Maria Angélica Martins Costa, João Andrade Carvalho
Introduction Air pollution has been a theme intensely researched in recent decades and their reduction is a factor of great importance in the pursuit of preserving the environment and in the implementation of sustainable development, because its effects affect in many ways human health, ecosystems and materials.
Materials and Methods In this study were used the following biomass: sugarcane bagasse, coffee pods, Eucalyptus grandis and Pinus elliottii.The burning of biomass were carried out with the aid of a biomass burner coupled to a biomass feeder (Fig. 1).
Burnt sugarcane harvesting: Particulate matter exposure and the effects on lung function, oxidative stress, and urinary 1-hydroxypyrene, Science of the Total Environment. 437 (2012) 200-208
Volatility and mixing states of ultrafine particles from biomass burning, Journal of Hazardous Materials. 205-206 (2012) 189-197, 2012
Online since: February 2014
Authors: Liubov I. Kozhara, Sergey Y. Polevoy, I.V. Popov
Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine, 12 Ak. 
Introduction The "metamaterials", or “artificial materials” with electromagnetic properties, which can be designed by experimentally are of strong interest now for the GHz and THz band devices design.
One of useful model of such type objects is so called wire medium formed by a lattice of metal wires which are made of non-magnetic (magnetic) materials.
Aktaş, High-Frequency Magnetoresonance Absorption in Amorphous Magnetic Microwires, Journal of Magnetism and Magnetic Materials, 247 (2002) 222-229.
Online since: July 2010
Authors: T. Maiyalagan, Sivakumar Pasupathi
Fig. 3 gives the classification of the membrane materials studied so far.
Zeolites and mineral clays are good prospective materials for such modification of Nafion membranes.
Binary Pd-M and ternary Pd-Co-M catalysts, in particular Pd-Co-Au and Pd-Co-Mo, are promising materials when used as cathode material in fuel cells.
Wnek, in: New materials for fuel cell and modern battery systems II: proceedings of the second international symposium on new materials for fuel cell and modern battery systems, edited by O.
Lim: European Polymer Journal, (in press)
Online since: February 2022
Authors: Yuriy S. Nechaev, Andreas Öchsner, Alisa O. Cheretaeva, Evgeny A. Denisov
In light of this, the issue of finding systems and materials for a compact and efficient hydrogen storage assumes a primary importance.
(Ref. [53] in [10]) reported very low hydrogen storage capacity at 303 K, and concluded that GNFs were unlikely storage materials for hydrogen.
Gary Sandrock, a well known expert in the field of hydrogen storage materials, to publically call on Rodriguez to submit samples to others for a “Real-Word Test” of their nanofiber materials (Ref. [56] in [10]).
Baker, Encyclopedia of Materials: Science and Technology, Elsevier, Amsterdam 2005
Srivastava, New carbon variants: graphitic nanofibers (nano-springs, nano-shoeckers) as hydrogen storage materials, Int.
Online since: May 2012
Authors: Wei Jun Yang, Gui Jin Zhang, Ting Ting Zhang, Shuai Yuan
Marking and Evaluating Index of Scientific Research Nurturing Teaching in Universities Yang Weijun1,a, Zhang Guijin1,b, Zhang Tingting1,c,Yuan Shuai1,d 1Changsha University of Science & Technology, Changsha, 410076 amgbyrh@163.com, bgizhang98@yahoo.com.cn, c691762880@qq.com, dicetuo81@hotmail.com Keyword: higher education quality; teaching making; evaluation index Abstract: Experts and scholars have debated for the relationship and importance of university researching and teaching for a long time, owing to the problem that classroom teaching is not attached importance exists objectively, and becomes more serious.
New achievement, new theories and new applications of science and technology are emerged in an endless stream, which objectively needs college teachers to stand for the frontier of knowledge development, update and supplement the knowledge to meet the need of cultivating creative talents.
This course involves related mechanical problems of the stable deformation of engineering, seepage, displacement and structure aging, material and so on.
References [1] Wang Changle: The competition of heavy teaching and heavy scientific research is a false problem, Science times. (2009.7) [2] Guo Yingjian: British and American scientists have criticized the university heavies scientific research and despises teaching, Science times. (2011.2) [3] You xiaoli: When the opportunity of reform of "heavy scientific research, light teaching" appear later in college, Science times. (2011.4) [4] Chen Zhaotao, Li Hong: On the construction of the combination of teaching and scientific research in Colleges [J], Journal of Shandong Youth University of Political Science. (2008.3) [5] Song Zhiguo, Song Ruimin: the harm, cause and Countermeasure of the conflict of research and teaching [J ], Social scientists. (2005.5)
Online since: June 2018
Authors: Fabrizio Scarpa, Túlio Hallak Panzera, Luciano Machado Gomes Vieira, Júlio Cesar dos Santos, André Luis Christoforo, Rodrigo Teixeira Santos Freire
Introduction The demand for devices and components with high structural performance and geometric complexity has intensively driven the evolution of composite materials.
Technological innovations in structural applications have been achieved by combining multiphase solids in order to obtain new composite materials.
Breidt, Impact Resistance of Short Fibre/Particle Reinforced Epoxy, Applied Composite Materials 11 (2004) 1-15
Neto, Impact fracture study of epoxy-based composites with aluminium particles and milled fibres, Journal of Materials Processing Technology 170 (2005) 277-283
Mridha, Impact Strength of Carbon Reinforced Epoxy Composite at Different Temperatures, Advanced Materials Research, 264-265 (2011) 451-456
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