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Online since: August 2010
Authors: Zhong Yong Yuan, Tian Yi Ma, Tie Zhen Ren
Song et al.
Vasylyev et al. reported titanium and oxide-phosphonate porous nanospherical particles by non-hydrolytic condensation of water-insoluble arylphosphoric acid (tetrakis-1,3,5,7-(4-phosphonatophenyl) adamantane) and titanium isopropoxide [26].
Xray photoelectron spectroscopy (XPS) measurements were performed on a Kratos Axis Ultra DLD (delay line detector) spectrometer equipped with a monochromatic Al-Kα X-ray source (1486.6 eV).
The chemical compositions of Ti and P were analyzed by inductively coupled plasma (ICP) emission spectroscopy on a Thermo Jarrell-Ash ICP-9000 (N+M) spectrometer, and C, N and H were analyzed on a Vario-EL elemental analyzer.
Vol. 12 (2000), p. 1268 [22] J.El.
Vasylyev et al. reported titanium and oxide-phosphonate porous nanospherical particles by non-hydrolytic condensation of water-insoluble arylphosphoric acid (tetrakis-1,3,5,7-(4-phosphonatophenyl) adamantane) and titanium isopropoxide [26].
Xray photoelectron spectroscopy (XPS) measurements were performed on a Kratos Axis Ultra DLD (delay line detector) spectrometer equipped with a monochromatic Al-Kα X-ray source (1486.6 eV).
The chemical compositions of Ti and P were analyzed by inductively coupled plasma (ICP) emission spectroscopy on a Thermo Jarrell-Ash ICP-9000 (N+M) spectrometer, and C, N and H were analyzed on a Vario-EL elemental analyzer.
Vol. 12 (2000), p. 1268 [22] J.El.
Online since: October 2004
Authors: Duk Yong Yoon, Young Kyu Cho, Hyun Min Jang
zones in Al-Ag alloy [39] and Ge particles in Al [40].
(a) (b) Recent statistical analysis of the distribution of grain boundary planes in polycrystalline MgO [77-79], SrTiO3 [77,80,81], MgAl2O4 [77], TiO2 [77], and Al [77] using electron backscattered diffraction (EBSD) mapping showed that the low index grain boundaries were the most numerous.
El-Dasher, Y.
El-Dasher, T.
(a) (b) Recent statistical analysis of the distribution of grain boundary planes in polycrystalline MgO [77-79], SrTiO3 [77,80,81], MgAl2O4 [77], TiO2 [77], and Al [77] using electron backscattered diffraction (EBSD) mapping showed that the low index grain boundaries were the most numerous.
El-Dasher, Y.
El-Dasher, T.
Online since: June 2015
Authors: Lisiane Navarro de Lima Santana, Valmir José da Silva, Romualdo Rodrigues Menezes, Maria Zilda A.A. Maia, Ana Marly A. Maia, Gelmires de Araújo Neves, Renato Correia Santos
Second firing
Mean flexural strength (MPa)
Porosity reduction
Al 1.4/20
25.76 ± 1.8c
24.1%
Al 1.4/30
77.43 ± 4.6b
34.3%
Al 1.6/20
133.35 ±8.1a
43.3%
Al 1.6/30
105.25 ±6.9ab
58.6%
Al F Conventional
112.84 ± 7.2ab
59.8%
Value of p
<0.001*
* ANOVA test in the mean of the groups; Tukey test described in superscript letters.
Second firing time Mean flexural strength (MPa) Porosity reduction Al Zr 1.4/20 18.09 ±2.3b 12.9% Al Zr 1.4/30 93.94 ±5.6 c 34.6% Al Zr 1.6/20 42.86 ±3.4b 22.9% Al Zr 1.6/30 114.26 ±7.4c 42.8% Al Zr F conventional 140.6 ± 9.8 a 66.3% Value of p <0.001* * ANOVA test in the mean the groups; Tukey test described in superscript letters.
Groups Thickness of layer (mm) Mean Microhardness (HV) Al Zr F Conventional 1.21 ± 0.05 1025.5 ± 47.3 Al Zr 1.4/20 0.06 ± 0.009 --- Al Zr 1.4/30 0.35 ± 0.04 947.2 ±52.2 Al Zr 1.6/20 0.13 ± 0.02 970.6 ±80.1 Al Zr 1.6/30 0.42 ± 0.05 950.8 ± 86.9 Conclusion The sinterization using microwave energy enables the rapid obtainment of ceramic pieces with suitable porosity for the process of infiltration with vitreous paste.
Chinellato, A.L.
Hyeongil, E.L.
Second firing time Mean flexural strength (MPa) Porosity reduction Al Zr 1.4/20 18.09 ±2.3b 12.9% Al Zr 1.4/30 93.94 ±5.6 c 34.6% Al Zr 1.6/20 42.86 ±3.4b 22.9% Al Zr 1.6/30 114.26 ±7.4c 42.8% Al Zr F conventional 140.6 ± 9.8 a 66.3% Value of p <0.001* * ANOVA test in the mean the groups; Tukey test described in superscript letters.
Groups Thickness of layer (mm) Mean Microhardness (HV) Al Zr F Conventional 1.21 ± 0.05 1025.5 ± 47.3 Al Zr 1.4/20 0.06 ± 0.009 --- Al Zr 1.4/30 0.35 ± 0.04 947.2 ±52.2 Al Zr 1.6/20 0.13 ± 0.02 970.6 ±80.1 Al Zr 1.6/30 0.42 ± 0.05 950.8 ± 86.9 Conclusion The sinterization using microwave energy enables the rapid obtainment of ceramic pieces with suitable porosity for the process of infiltration with vitreous paste.
Chinellato, A.L.
Hyeongil, E.L.
Online since: November 2015
Authors: Yan Ying Zhao, Xin Liu
[3] Sumida, K., et al/ Chem.
[15] Yadav M., et al., Chem.
[23] Abu-El-Sha’r, W.Y., et al., Environ.
[32] Haque, E., et al.
[33] Kumari, G., et al., J.
[15] Yadav M., et al., Chem.
[23] Abu-El-Sha’r, W.Y., et al., Environ.
[32] Haque, E., et al.
[33] Kumari, G., et al., J.
Online since: July 2017
Authors: Qian Li Dong, Zhang Yu, Syed Abdul Rehman Khan
After all customers give order to the firm, and then the company will start order filling process (Satzler et al., 2002).
Usually firms will follow order filling option (Spener et al., 1994).
When customer’s order comes, company fulfills the order with finished goods stored in warehouse (Swink et al., 2005).
Companies can achieve the efficiency and effectiveness both by using warehouse effectively (Chun et al., 2016; Harrison et al., 2008).
Warehouse-design is extremely important but no theoretical or science based methodology exists for warehouse design Goetschalckx et al.,(2002), Rouwenhorst et al.,( 2000), Baker and Canessa, (2009).
Usually firms will follow order filling option (Spener et al., 1994).
When customer’s order comes, company fulfills the order with finished goods stored in warehouse (Swink et al., 2005).
Companies can achieve the efficiency and effectiveness both by using warehouse effectively (Chun et al., 2016; Harrison et al., 2008).
Warehouse-design is extremely important but no theoretical or science based methodology exists for warehouse design Goetschalckx et al.,(2002), Rouwenhorst et al.,( 2000), Baker and Canessa, (2009).
Online since: June 2006
Authors: Taiju Tsuboi
One of the reasons is that the ratio between fluorescent singlet and phosphorescent triplet states is
1:3, therefore the harvesting of triplets is expected to increase the electroluminescence (EL)
quantum efficiency [4].
Optical process in the EL and photoluminescence (PL) should be clarified to find much more highly efficient phosphorescent materials.� Ir(ppy)3 gives rise to the PL and EL phosphorescence band with a peak at about 515 nm.
From these results we can conclude that the energy separation of the substates 1 and 2 is about 12 cm -1 and the separation of the substates 1 and 3 is about 89 cm-1. 0 25 50 75 100 125 150 0.01 0.1 1 10 100 �U�SS�����Q�7 �) PL lifetime (µs) temperature (K) measured calculated Fig.5 The PL lifetimes calculated by solving the rate equations (solid line), which are fitted to the PL lifetime of Ir(ppy)3 doped in THF measured in Refs.[6,7] (open circle). 1 10 100 0.01 0.1 1 10 measured by Goushi et al.
Goushi et al obtained only one PL lifetime from the single exponential decay curve [8], while our calculation predicts two additional short lifetimes as the case of the calculated PL lifetimes shown in Fig.5.
Optical process in the EL and photoluminescence (PL) should be clarified to find much more highly efficient phosphorescent materials.� Ir(ppy)3 gives rise to the PL and EL phosphorescence band with a peak at about 515 nm.
From these results we can conclude that the energy separation of the substates 1 and 2 is about 12 cm -1 and the separation of the substates 1 and 3 is about 89 cm-1. 0 25 50 75 100 125 150 0.01 0.1 1 10 100 �U�SS�����Q�7 �) PL lifetime (µs) temperature (K) measured calculated Fig.5 The PL lifetimes calculated by solving the rate equations (solid line), which are fitted to the PL lifetime of Ir(ppy)3 doped in THF measured in Refs.[6,7] (open circle). 1 10 100 0.01 0.1 1 10 measured by Goushi et al.
Goushi et al obtained only one PL lifetime from the single exponential decay curve [8], while our calculation predicts two additional short lifetimes as the case of the calculated PL lifetimes shown in Fig.5.
Online since: September 2012
Authors: Hang Gao, Ben Wang, Song Peng Zhang, Yong Jie Bao
In order to study the wear behavior of composites, Vishwanath et al. [9] investigated the effect of reinforcement materials on the friction characteristics of fabric reinforced polymeric composites.
Besides, Mondelin et al. [11] found that the friction coefficient between carbon/epoxy composites and monocrystalline diamond is not sensitive to sliding velocity or contact pressure.
El Mansori: Compos.
Besides, Mondelin et al. [11] found that the friction coefficient between carbon/epoxy composites and monocrystalline diamond is not sensitive to sliding velocity or contact pressure.
El Mansori: Compos.
Online since: August 2013
Authors: Kyaw Thu, Azhar Ismail, Wai Soong Loh, Kim Choon Ng
As such, Loh et al (2012) [3] introduced a model to take into account the non-isothermal effects on the adsorption kinetics of assorted adsorbates on Maxsorb III activated carbon during a Constant volume variable pressure (CVVP) experiment.
He et al [4] on the other hand identified the effects of pressure differences.
El-Sharkawy ., J.M.
He et al [4] on the other hand identified the effects of pressure differences.
El-Sharkawy ., J.M.
Online since: August 2016
Authors: Shen Jie Zhou, Xing Guang Dong
[2] .Sandra, S.Anna, S.Zdenko, et al, Effect of addition of expanded graphite (EG) on the synthesis and characteristics of poly(ethylene terephthalate) modified with cycloheanedi-methanol (PETG), Polimery. 58 (2013) 893-899
[3] A.B.Martinez, N.Leon, D.Arencon, et al, On the effect of the different notching techniques on the fracture of PETG, Polymer testing. 32 (2013) 1244-1252
[5] K.A.El-Farahaty, A.M.Sadik, A.M.Hezma, γ-Irradiation effects on opto-thermal and -mechanical properties of PET and PETG fibers, International Journal of Polymeric Materials and Polymeric Biomaterials, 58 (2009) 366-383
[3] A.B.Martinez, N.Leon, D.Arencon, et al, On the effect of the different notching techniques on the fracture of PETG, Polymer testing. 32 (2013) 1244-1252
[5] K.A.El-Farahaty, A.M.Sadik, A.M.Hezma, γ-Irradiation effects on opto-thermal and -mechanical properties of PET and PETG fibers, International Journal of Polymeric Materials and Polymeric Biomaterials, 58 (2009) 366-383
Online since: June 2008
Authors: Yong Qi Liu, Yan Xia Wang, H.Y. Shi
SI F of t he mechani cal st ress f i el d
0
0. 5
1
1. 5
2
2. 5
3
0. 15 0. 25 0. 3 0. 5 0. 6 0. 7 0. 8 1
a/ mm
K/ MPa*m1/ 2
cal cul at ed val ue acdami c val ue
l oad
0
2
4
6
8
10
12
14
16 0 0. 005 0. 01 0. 015 0. 02 0. 025 0. 03 0. 035
t i me/ s
val ue/ MPa
Fig. 3 SIF of the mechanical field Fig.4 The approximation chart of the sine-wave
According to the theory of rupture, when structure geometry, crack size and loads are taken into
account, the equivalent SIF at the crack tip can be given as,
1 ( )ar a
K aFσ π +=
Fig.5 The distribution of the dynamics stress Fig.6 Stress changing curve Fatigue Theory Analysis The material of this piston is AL-SI alloys, and its basic parameters of fatigue are: Kc=39.4MPa, C=2×10-8,m=3 [8].
On the basic of the document and the experiential data , the average doorsill value thK∆ of the AL-SI alloy is available as thK∆ =1.55MPam1/2.
Fig.5 The distribution of the dynamics stress Fig.6 Stress changing curve Fatigue Theory Analysis The material of this piston is AL-SI alloys, and its basic parameters of fatigue are: Kc=39.4MPa, C=2×10-8,m=3 [8].
On the basic of the document and the experiential data , the average doorsill value thK∆ of the AL-SI alloy is available as thK∆ =1.55MPam1/2.