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Online since: January 2011
Authors: Ulvi Şeker, Mustafa Günay, Radu Liviu Orban, Luisa N. Mîtcă
Scale Cwajna, Characterisation of reinforcement distribution in Al/Al2O3 composites obtained from composite powder, Mater Charact. 46 (2001) 189–95
El-Gallab, M.
Sklad, Machining of Al/SiC particulate metal–matrix composites.
Seker, Evaluation of tool wear when machining SiCp-reinforced Al-2014 alloy matrix composites, Materials and Design. 25 (2004) 251–255
Bhanuprasad, Surface finish and integrity of machined surfaces on Al/SiCp composites, Journal of Materials Processing Technology, 192–193 (2007) 66–174
Online since: September 2014
Authors: Yue Kong
The study area includes Kaili,south-east of Guizhou  province, and Huangping county area, the Middle Permian Liangshan formation (P2l), Qixia group and Mao El group (P2q—m) which strata is widely developed . 
Tab.1 Classification of sedimentary facies Table 2 Vertical Characteristic of aluminiferous in Kaili-Huangping area  shale series in Kaili-Huangping area Fig. 1 Geological map of Kaili-Huangping area 1- limestone of Middle Permian Qixia-Maokou Formation 2-Al-rich rock series of Middle Permian Liangshan Formation 3 imestone of Lower Carboniferous  Baizuo formation4- The upper Devonian dolomite 5- The Silurian Weng group of quartz sandstone and claystone 6- Lower Ordovician limestone and dolomite 7- Cambrian dolomite 8-  reverse fault  9- normal fault 10- Syncline Typical, we do NNW NNE Nee and NE, four combined profile  [Figure 2, figure 3].
The bauxite metallogenic and paleogeography framework of study area According to the research of Wu Guohui et al. (2006), during the Silurian to Devonian, Kaili-Huangping was in the coastal environment, deposited ofterrigenous clastic and carbonates material.
Ca, Mg, Si and alkali metal in the rock leaching got loss under the laterization, meanwhile Al, Fe, Ti and other inert component was relatively enrichment.
With the deepening of the process of laterization, gradually formed a CA-Al-rich Laterite weathering crust; prepared the ore-forming material for forming area is rich iron ore and bauxite.In the early stage of Middle Permian, seawater intrude from the southwest to the northeast, the study area is located in the littoral-neritic sea sedimentary facies environment.
Online since: March 2023
Authors: Victor A. Klinkov, Elena Afanaseva, Elena Vaishlia, Ilya Kolesnikov
Materials and Methods The precursors for MAS: Cr3+ were mixture of aluminum hydroxide Al(OH)3 and magnesium hydroxide Mg(OH)2 (LLC "NN Optics"), which is obtained by the method of hydrolysis of double magnesium-aluminum isopropylate [13], chromium nitrate nonahydrate Сr(NO3)3•9H2O and chromium oxide Cr2O3.
No impurities were detected in Samples 2-4 and included peaks of O, Mg, Al, Cr.
Elemental composition of MAS: Cr3+ nanopowders Sample number 1 2 3 4 Element At.% O 57.16 57.28 57.16 57.18 Mg 13.97 13.61 14.21 14.08 Al 27.84 28.13 27.54 28.24 Cr 0.91 0.98 1.09 0.49 Cu 0.12 - - - The transmission spectra of MAS: Cr3+ of ceramic samples are presented in Fig.3.
Pestereva, E.L.
Sarakovskis, Low-temperature studies of Cr3+ions in natural and neutron-irradiated g-Al spinel, Low Temp.
Online since: March 2008
Authors: Q.W. Zhang, Di Tao Niu, B.Y. Zhang, T. Zhang
There is significant progress in soil-pile dynamic interaction, which can be saw in pertinent review articles written by Pender[1], Roesset [2], Novak[3], and Gazetas et al.[4].
Several rigorous solutions entail significant computational effort and are used primarily for research rather than for design tools (Blaney et al. [7], Wolf and Von Arx [8], Kagawa and Kraft [9], Kaynia and Kausel[10], Sen et al. [11]).
Multi-particle system model was proposed by Penzien J. et. al. [12], but this model is too simple to apply to engineering computation.
In Fig.4, the circle dote represent the field test result and the triangle dote represent the calculating results. 0 0. 5 1 1. 5 2 2. 5 3 3. 5 1 2 3 4 5 6 f r equent number f r equent val ue cal cul at i ng val ue f i el d t est r esul t Fig.4 Comparison between results of field test and numerical computation.
Online since: December 2006
Authors: Ming Chen, Gang Liu
Table 1 Main chemical components of superalloys used in experiments [Wt%] Ni Cr Al Ti Fe Other GH738 balance 18.0-21.0 1.2- 1.6 2.75-3.25 ≤2.0 Co:12.0- 15.0 GH4033 balance 19.0-22.0 0.6-1.0 2.4-2.8 ≤1.0 -- GH3030 balance 19.0-22.0 ≤0.15 0.15-0.35 ≤1.50 -- GH3044 balance 23.5-26.5 ≤0.50 0.3-0.7 ≤4.0 -- GH4169 30.0-55.0 17.0-21.0 0.2-0.6 0.65-1.15 15.0-21.0 Nb:4.75-5.5 GH80A balance 18.0-21.0 1.0-1.8 1.8-2.7 ≤1.5 Co≤2.0 Results and Discussions The Influence of Different Element Contents.
Aluminium and titanium are added to strengthen nickel-based superalloys by the formation of γ' gamma prime, (Ni3(Al,Ti)) which is directly proportional to the amount of total hardening elements present, i.e. aluminium, titanium and niobium[5].
Sun and et al: J. of Mater.
Li and et al: Key Engineering Materials, Vol.259-260 (2004), pp.824
El-Baradie: J. of Mater.
Online since: September 2013
Authors: Chang Qing Wang
The models used in the present study are those discussed by Filippou et al.[8].
While the reinforcing steel model by Filippou at al [8] remains one of the most accurate and convenient to use, many improved confined concrete models have been proposed by [9].
The reinforcing steel stress-strain behavior is described by the nonlinear model of Menegotto and Pinto [10], as modified by Filippou et al.[8] to include isotropic strain hardening.
The monotonic envelop curve of concrete in compression follows the model of Kent and Park [11] that was later extended by Scott et al. [12].
Wenchuan earthquake wave (WCW, 2008, N-S), El Centro earthquake wave (ELW, 1940, N-S), as well as Shanghai artificial wave (SHW) is selected as the dynamic inputs in numerical simulation [7].
Online since: February 2015
Authors: Huai Yu Yang, Fu Hui Wang, Li Juan Feng, Xin Cui, Jian Hua Wang
Boulif et al, Electrochim.
He et al , Corros.
Mernari et al , Appl.
El-Rehim, Electrochim.
E.Jamil, A.Shriri, and R.Boulif et al, Electrochim.
Online since: January 2014
Authors: Wen Qin Yang, Han Liu, Jie Zhang, Chuan Gang Zang, Yu Chao Liu, Zhen Yan Liu, Hong Guan
Liu Zhen-yan et al. [9] showed that the product, L. bulgaricus hydrolyze casein, had good antioxidant activity in vitro.
The contents of free amino of protein hydrolysate was determined by the method of Adler-Nielsen et al. [10, 11].
The antioxidant activity of the protein samples were evaluated by the method of church et al. [12] with some modifications.
Kristinsson et al. [14] shown that extensive hydrolysis could have a negative impact on the functional properties.
[6] N Ezzat, M EL Soda, MJ Desmazeaud, A Ismail.
Online since: November 2013
Authors: Somanth Biswas, Jeevan Jadhav
Theoretical studies of ferromagnetic ordering in transition metal (TM) ion doped semiconducting materials by Dietl et al. [5], first revealed the potentiality of these materials for novel applications in spintronics.
Recently, Gu et al. [15] reported that the ferromagnetism in Co-doped ZnO nanoparticles comes from the interfacial oxygen deficiency and can be tuned by changing the oxygen vacancies.
In another finding, Xiang et al.[16] have investigated the Zn vacancy induced RTFM in pristine ZnO.
Tian et al. [7] carried out a systematic study on Cu-doped ZnO nanoparticles and found that RTFM is not carrier-mediated, rather carriers are strongly localized and bound magnetic polaron (BMP) interactions play the key role in controlling the RTFM.
El.
Online since: December 2014
Authors: Xue Feng Li, Zhi Fu, Ying Xin Hui
Zhang D.S. [7], Dhir R.K. et al. [8] studied the effects of different types of fly ashes and their dosages on the volume of air entrained, stability of air bubbles, and air loss with time using of different AEAs.
Saucier F. et al. [9] experimentally investigated the effects of temperature on air entrainment effectiveness.
Moreover, MacInnis C. et al. [10] and Liu et al. [11] studied other factors such as superplasticizers and vibrating frequency.
[8] Dhir R K, McCarthy M J, Limbachiya M C and El Sayad H I.
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