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Online since: October 2006
Authors: Marek Skowronski, A.Y. Polyakov, R.G Ray, B.E. Weiland, R.L. Cavalero, Mark A. Fanton, Qiang Li
Use of solid source material also resulted in a
reduction in N contamination in the boules by a factor of two compared to powdered source
material.
In addition, DLTS data clearly show a reduction in the concentration of traps related to Si-rich growth conditions.
In addition, DLTS data clearly show a reduction in the concentration of traps related to Si-rich growth conditions.
Online since: June 2004
Authors: Tsutomu Yatsuo, Kenji Fukuda, T. Hayashi, Kazuo Arai, Takaya Suzuki, Kazutoshi Kojima, Yasunori Tanaka
We have succeeded in epitaxial
growth on the (000-1) C-face without surface defects or morphologies [4], however, there is no data
on the details of blocking characteristics in pn junctions, which is very important information for the
design of MOSFETs or other devices.
Baliga [5] pointed out that the surface electric field exceeded the maximum bulk electric field, which means the reduction of the breakdown voltage, below the negative bevel angle of 80° in the silicon pn diode.
In our previous work [6], we did not observe such a reduction of the breakdown voltage originating in the excessive surface electric field in the pn diode with the same negative bevel angle on the 6H-SiC(0001) Si-face.
Baliga [5] pointed out that the surface electric field exceeded the maximum bulk electric field, which means the reduction of the breakdown voltage, below the negative bevel angle of 80° in the silicon pn diode.
In our previous work [6], we did not observe such a reduction of the breakdown voltage originating in the excessive surface electric field in the pn diode with the same negative bevel angle on the 6H-SiC(0001) Si-face.
Molecular Dynamic Simulations of Contact Thermal Resistance between Two Individual Silicon Nanowires
Online since: June 2011
Authors: Jian Giang Wang, Ke Dong Bi, Yun Fei Chen
Although the MD results [9] are one order of magnitude larger than the experimental data, they still indicated that the contact thermal resistance played an important role in heat transport in CNT-polymer composites.
More heat exchange through this interaction, leading to a reduction in the interfacial thermal resistance of the system as shown in the inset of Fig. 3.
A theoretical calculation from Yan et al[16] also suggested that there exists a substantial reduction in the thermal conductivity of the multi-walled carbon nanotubes under the assumption of strong intertube coupling because of the intertube resistance.
More heat exchange through this interaction, leading to a reduction in the interfacial thermal resistance of the system as shown in the inset of Fig. 3.
A theoretical calculation from Yan et al[16] also suggested that there exists a substantial reduction in the thermal conductivity of the multi-walled carbon nanotubes under the assumption of strong intertube coupling because of the intertube resistance.
Online since: May 2011
Authors: Fei Gao, Xin Dong Wang, Ya Kun Zhang, Jian Ling Li
SCE correspond to the oxidation of manganese(II) and the reduction of manganese dioxide[11].
SCE) rises from the redox transition between p-benzoquinone and the hydroquinone forms of PANI [13], in which leucoemeraldine is the complete reduction state of PANI; emeraldine, middle oxidation state; and pernigraniline, complete oxidation state.
From the data in Table 1, it is obvious that the capacitance of PANI/MnO2 increases to 1.69 times as that of the PANI at the current density of 0.1 mA cm-2.
SCE) rises from the redox transition between p-benzoquinone and the hydroquinone forms of PANI [13], in which leucoemeraldine is the complete reduction state of PANI; emeraldine, middle oxidation state; and pernigraniline, complete oxidation state.
From the data in Table 1, it is obvious that the capacitance of PANI/MnO2 increases to 1.69 times as that of the PANI at the current density of 0.1 mA cm-2.
Online since: January 2010
Authors: Jian Hong Liu, Pei Xin Zhang, Xiang Zhong Ren, Qian Ling Zhang, Xi Li
The final products were then filtered, washed with deionized water, and dried at 70°C in a vacuum
oven for 24h.
2.2 Measurements
The crystal structure of the LiFePO4/PPy composites was evaluated by X-ray diffraction(XRD)
methods using Cu Kα radiation (BRUKER D8 ADVANCE, Germany).The X-ray diffraction data
were corrected in the angle interval from 10° to 60° (2θ) at step of 1.2°/min.
The oxidation and reduction peaks of LiFePO4/PPy appear at 3.552 and 3.308V respectively.
The potential interval between oxidation and reduction peaks is 0.244V, representing a good reversibility of LiFePO4/PPy composite with 2.5 wt.% PPy.
The oxidation and reduction peaks of LiFePO4/PPy appear at 3.552 and 3.308V respectively.
The potential interval between oxidation and reduction peaks is 0.244V, representing a good reversibility of LiFePO4/PPy composite with 2.5 wt.% PPy.
Online since: August 2007
Authors: Keiro Tokaji, Mitsutoshi Kamakura, Yoshihiko Uematsu
One of the reasons is lack of
the most recent fatigue data.
Mechanical properties. 0.2% proof Tensile Elongation Reduction Elastic Vickers Material stress strength of area modulus hardness σ 0.2 σ B φ ψ E HV [MPa] [MPa] [%] [%] [GPa] Mg2Si-F 187 256 3.5 4.8 50 70 Mg2Si-C 186 245 2.6 4.2 50 66 Extruded AZ31 274 15 31 40 53Fatigue Strength.
In Mg2Si-C, cracks can initiate easier at larger particles under lower applied stresses and crack initiation at much larger particles leads to the reduction of crack growth life.
Mechanical properties. 0.2% proof Tensile Elongation Reduction Elastic Vickers Material stress strength of area modulus hardness σ 0.2 σ B φ ψ E HV [MPa] [MPa] [%] [%] [GPa] Mg2Si-F 187 256 3.5 4.8 50 70 Mg2Si-C 186 245 2.6 4.2 50 66 Extruded AZ31 274 15 31 40 53Fatigue Strength.
In Mg2Si-C, cracks can initiate easier at larger particles under lower applied stresses and crack initiation at much larger particles leads to the reduction of crack growth life.
Online since: October 2010
Authors: Yong Jun Chen, Jun Ying Hou, Gang Li, Dong Li Shui, Hai Peng Tang, Li Liu
Figure 3 shows that the synthesis samlpe along with aluminum content' increase, the factor of porosity overall assumes the declining trend, the samlpe surface defect reduces with the hole reduces, wears the surface has the crack probability reduction under the compressed stress and the cutting action of force, forms the abrasive dust the quantity reduction, truncates the function to the samlpe surface plow to reduce, thus wear resistant is enhanced.
The data shows that with aluminum content' increase, the sample of synthesis corrosion rate obviously reduces,when the aluminum content was 70%, the corrosion rate compared 50% the corrosion rate reduced 10 times.
The data shows that with aluminum content' increase, the sample of synthesis corrosion rate obviously reduces,when the aluminum content was 70%, the corrosion rate compared 50% the corrosion rate reduced 10 times.
Online since: April 2016
Authors: František Girgle, Vojtěch Kostiha, Đorđe Čairović, Petr Štěpánek
If there is a lack of adherence between these layers, there is a difference in the deformation of strengthening and strengthened material and therefore the reduction of effectiveness of strengthening can happened.
When comparing the resistance of test specimens of series 1K and 1T there was a reduction of confined to unconfined compressive strength ratio fcc/fc0 from 2.57 to 1.90 as the diameter of column was increased to 85% of the original.
Fig.1 Interaction diagram for confined test specimens – RC column confined by FRP fabric After data evaluation it was possible to compare the real behavior of unconfined and confined element with predicted behavior which was described by analytical relations.
When comparing the resistance of test specimens of series 1K and 1T there was a reduction of confined to unconfined compressive strength ratio fcc/fc0 from 2.57 to 1.90 as the diameter of column was increased to 85% of the original.
Fig.1 Interaction diagram for confined test specimens – RC column confined by FRP fabric After data evaluation it was possible to compare the real behavior of unconfined and confined element with predicted behavior which was described by analytical relations.
Online since: February 2014
Authors: Yi Xiang Hu, Shun Ming Li, Qing Liu
In Fig.3, when the engine speed becomes larger, the exhaust noise will be larger; from the perspective of noise elimination, the installation of the exhaust muffler is an effective measure to reduce exhaust noise, but relative to the low speed, the noise reduction is still relatively small; In exhaust spectrum of original muffler, the noise elimination is relatively poor in 700Hz, 1500-3000Hz.
In contrast with exhaust noise spectrum data in Fig.3, the result of equivalent gradient method with consideration of the temperature and velocity field is closer to the test results.
It can be seen from Fig.6(b), the exhaust noise of improved muffler than the original muffler has average noise reduction 5.1dB (A), thus it does not affect the engine output power, as shown in Fig.6(a).
In contrast with exhaust noise spectrum data in Fig.3, the result of equivalent gradient method with consideration of the temperature and velocity field is closer to the test results.
It can be seen from Fig.6(b), the exhaust noise of improved muffler than the original muffler has average noise reduction 5.1dB (A), thus it does not affect the engine output power, as shown in Fig.6(a).
Online since: November 2011
Authors: Zheng Zhu Zhang, Shou He Yan, Da Xiang Li, Tie Jun Ling, Marc Meurens, Yvan Larondelle
The claimed pharmacological benefits of L-theanine are numerous, ranging from prevention of neuronal death [5], reduction of tumor growth [6], enhancement of antitumor activity of chemotherapeutic agents [7] and reduction of hypertension and blood pressures [8].
As shown in Fig. 2, the assignments of the NMR data for L(D)-theanine were confirmed by those of reference [15].
As shown in Fig. 2, the assignments of the NMR data for L(D)-theanine were confirmed by those of reference [15].