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Online since: August 2013
Authors: Jia Chen, Xin Rong Hu, Hong Wei Chen
Recently Gou et al. [12] studied the problem of finding efficient equivalent view-based rewritings of relational queries, possibly involving grouping and aggregation.
Fig. 3 Expansion Mutation Fig. 4 Collapse Subtree Mutation EXPERIMENTAL STUDIES To validate the effectiveness of the proposed SRGP, we compared it with the leading rewrite method used in Gang Gou et al. (2006), which is a dynamic-programming optimization algorithm.
Bayardo Jr., et al., Infosleuth: Semantic integration of information in open and dynamic environments (experience paper), in: SIGMOD, 1997, pp. 195–206
Chawathe, et al., The TSIMMIS project: Integration of heterogeneous information sources, in: IPSJ, 1994, pp. 7–18
Kossmann, E.L.
Online since: December 2025
Authors: Fatima Ezzahra Arhouni, Mohammed Hakkar, Saad Ouakkas, Maged Ahmed Saleh Abdo, Aziz Boukhair
Yavuzkanat et al. (2019) carried out simulations of the NaI(Tl) detector using Geant4 based GATE simulation program ‎[12].
Hurtado et al. (2014) conducted the first attempt to use GEANT4 to model a reverse electrode germanium detector (REGe) to improve its efficiency calibration procedure ‎[13].
Variation of the mass attenuation coefficient as a function of the energy calculated from the experiment for the different absorbers Al, Pb, Cu Fig. 10.
Comparison between the experimental and simulated mass attenuation coefficient with GEANT4 for the different absorbers Al, Pb, Cu at different energies For different thicknesses, the decay rates of the gamma rays passing through Pb, Al and Cu absorbers are shown in Fig. 11.
Agostinelli, et al., Geant4 - A Simulation Toolkit, Nucl.
Online since: May 2006
Authors: Maria-Teresa Freire Vieira, Ana Sofia Ramos, Manuel F. Vieira, Filomena Viana
Baeslack et al. [30] applied this process to Ti-48Al-2Cr-2Nb.
Ti(Al) and Al(Ti) alternating nanoscale layers resulted from the time that the substrates under rotation passed in front of each target.
Multilayer nanostructured thin films with nanometric period due to the high number of interfaces have increased diffusivity (self-propagation exothermic formation reactions of Ti with Al, where Ti-Ti and Al-Al bonds change to Ti-Al [46]).
[29] E.L.
Wang et al.: J.
Online since: May 2012
Authors: Hong Juan Liu, Yu Jie Zhou, Zhong Zhen Cai, Yan Sun, Jian An Zhang, De Hua Liu
This work studied the PDO production with the strain, D-lactate-deficient mutant K. pneumoniae DC02, which has been constructed according to the procedure of Xu et al. [19].
The concentration of 3-HPA was measured according to the method described by Circle et al [23].The lactic acid optical activity was analyzed by D/L -Lactic acids kit(F)(Bessant, France).
Mu et al. compared the PDO production by K. pneumoniae DSM 2026 using crude glycerol respectively from the alkali-catalyzed methanolysis of soybean oil and from a lipase-catalyzed process.
As the results, 51.3 g/land 53 g/l PDO were obtained [24].Jun et al studied the PDO synthesis by DSM 4799 with raw glycerol, a main by-product (purity 80% w/w) from the methanolysis of soybean oil, and PDO concentration reached 80.2 g/L[25].
El-Ziney, N.
Online since: March 2016
Authors: Wan Jiang, Lian Jun Wang, Wei Luo, Shi Jia Gu
The elemental analysis of ZSM-5 showed that the Si/Al≈720.
Mayerhofer et al. prepared silica glass by consolidated SiO2 nanoparticles using SPS at 1273K and annealed them at 1173K for 5h.[13] The SPS-compacted sample showed a transmittance of 63% in the range of 200~1000nm.
Zhang et al. fabricated transparent silica glass using commercial amorphous SiO2 powder by SPS.[3] Their results showed that the maximum transmittance at λ=200nm was 45% and the transmittance increased from 45 to 85% with increasing λ from 200 to 500nm when the samples were not annealed.
The UV transmittance of the silica glass body prepared by zeolite is also obviously higher than the un-annealed samples reported by Zhang et al.[3] The above results suggest that the raw material is an important factor for the preparation of the highly transparent silica glass.
Abd El-Maksod, Synthesis and characterization of partially crystalline nanosized ZSM-5 zeolites, Ceram.
Online since: January 2006
Authors: Fung Huei Yeh, Ming-Tsung Wu, Yuung Hwa Lu
Kim et al. [1] used roll-back method to compare deformed blank profile with objective one.
Lu et al. [2] combines adaptive neuro-fuzzy inference systems (ANFIS) and elasto-plastic finite element to predict the preforming shape of the upsetting process.
Lin, et al. [3] analyzed the anisotropy metal relation between the ear profile and anisotropic of material in drawing.
Zaky et al. [4] discussed anisotropic blank optimization in the cylindrical cup drawing process according to the stress and strain relation of Hill theory [5].
El-Sebaie: J.
Online since: January 2012
Authors: Uwe Erb
Structure-Sensitivity of Properties in Polycrystalline Metals One particularly good comparison of structure-sensitive and structure-insensitive properties observed in conventional polycrystalline materials was given as a table in the classical materials science text by A.L.
Zhou et al. [12] determined upper bound and lower bound solutions for nickel as follows: (5) where Eg, Egb and Etj are the Young’s moduli for the grain interiors, grain boundaries and triple junctions, respectively.
The analysis by Zhou et al. [12] has clearly shown that the Young’s modulus is more or less the same for all nanocrystalline Ni materials with grain sizes larger than 20 nm.
Mat., Vol. 444 (2010), p. 163 [4] A.L.
El-Sherik, U.
Online since: January 2023
Authors: Nandang Mufti, Ahmad Taufiq, M. Tommy Hasan Abadi, Dhea Paradita, Mujamilah Mujamilah, Retno Fitri Wulandari
Adam et al. 2021 used magnetic mesoporous silica spheres for hyperthermia therapy[4].
Wang et al., “Synthesis of Fe3O4 magnetic fluid used for magnetic resonance imaging and hyperthermia,” J.
Adam et al., “Orienting the pore morphology of core-shell magnetic Mesoporous silica with the sol-gel temperature.
Peternele et al., “Experimental investigation of the coprecipitation method: An approach to obtain magnetite and maghemite nanoparticles with improved properties,” J.
El Ghandoor, H.
Online since: December 2012
Authors: Hai Yan Wang
BMN Kacem et al.[2] 16 --- --- 7 --- --- Zhang and Gen [3] 15 --- --- 7 --- --- Zhang et al. [4] 14 16.2 --- 7 7.8 --- GA 15 15.55 9 7 7.45 13 Our proposed algorithm 14 14 20 7 7 20 The corresponding Gantt charts are shown in Figs. 3–4.
[4] Zhang CY, Rao YQ, et al.
[5] Lawler EL, Lenstra JK, Rinnooy Kan AHG, Shmoys DB.
[9] Qian B, Wang L, Huang DX et al.
Online since: May 2016
Authors: Gerhard Hirt, Markus Grüber
Doege et al. [7] introduced a process control that is based on an analytical model including several simplifications that is capable of calculating the expected forces at each levelling roll.
To determine the roll positions leading to a flat product Pernía et al. [11] introduced an approach employing genetic algorithms for optimising the process parameters.
Oligschläger et al. [12] proposed a setup where the residual sheet curvature is estimated by a single position measurement at the machine’s outlet.
Kaiser et al. [13] presented an FE model that uses pre-calculated curvature values for each single bending operation the investigated long product undergoes when passing through the roller leveller as reference for a control-loop.
El Nadi, R.
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