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Online since: March 2015
Authors: Xi Wang
N,N,N’,N’-tetra(3-aminopropyl)-1,6-diaminohexane (TADH) was synthesized via the bimolecular Michael addition of hydrogen atoms of the primary amine functionalities of 1,6-diaminohexane onto activated double bonds of acrylonitrile under favorable conditions, followed by heterogeneously catalyzed reduction of the intermediate polynitriles to the corresponding primary polyamine (TADH) [5,6].
The molecular structure of TADH is illustrated in Scheme 1, and its FTIR, 1H-NMR, and ESI-MS spectrum data are given below.
These data agree well with the predictions from its theoretical molecular structure, indicating full achievement of TADH.
Furthermore details about how to acquire and process thermal data could be accessed elsewhere.
Online since: February 2014
Authors: Mietek Bakowski, Jang Kwon Lim, Diane Perle Sadik, Dimosthenis Peftitsis, Hans Peter Nee
Another advantage is the reduction of leakage current due to the shielding of the electric field at the Schottky contact by the P+-N junctions of the grid [3, 4].
As has been demonstrated earlier, 1700 V BG JBS-type SBDs with leakage current at least three orders of magnitude lower compared to the typical data sheet values of the commercial devices and the leakage current at 250°C of the same order of magnitude as that of the commercial devices at 175 °C, are feasible [7].
The analysed data in Fig. 3 were all from the type A devices and the data in Fig. 4 were all from the type B devices according to Fig. 2.
Online since: July 2011
Authors: Can Li, Jian Wei Zhang, Yun Zeng Chen, Jian Hua Ma
Among the 32 data of ΔIgeo, 2006-1996, there are 25 data higher than 0 with 75% of the total data, which indicates that metal pollution in urban soils of Kaifeng City became heavier in the period with a view as a whole.
In 1996, Kaifeng Medicine Company owned the land, and the boiler room was demolished, people and vehicles decreased in the area, which led to pollution reduction of soil metals (Fig. 2).
Online since: October 2014
Authors: Suttichai Assabumrungrat, Tawatchai Charinpanitkul, Kreangkrai Maneeintr, Pattara Boonpipattanapong
However, the essential data for solubility of carbon dioxide in DEAE solution is still scarce.
Samples are taken for 3 times to analyze the equilibrium solubility data by using titration with 1M HCl.
An increase in cyclic capacity will lead to the decrease of absorption circulation rate in the plant resulting in the reduction of the overall capital and operating costs and leading to the decrease in carbon dioxide capture cost.
Li, Solubility of carbon dioxide in aqueous mixtures of monoethanolamine with methyldiethanolamine, Journal of Chemical and Engineering Data. 37 (1992) 96-100
Online since: August 2014
Authors: Peng Jun Zhao, Jia Qi Zhang, Xin Qian Xiong, Fang Long Xu
X-ray diffraction data was collected using an X-ray diffractometer (BRUKE D8 ADVANCE) with Cu Kαradiation at a step of 0.02 in the range 2θ= 20°to 60°.
In order to identify the crystalline structural distortion, Rietveld refinement has been performed using the precise XRD data.
The measured spectra fitted data very well.
The high leakage current density in un-doped BFO thin film originate mainly from the reduction in Fe3+ species to Fe2+ creates oxygen vacancies for charge compensation and in turn it increases the conductivity.
Online since: April 2015
Authors: Ilyas Rakhmatullin, Anastasiya Makarova, Alexander Sivkov
Results and discussion Analytical data of the sintered samples are received by the following methods without any preparation: X-ray diffraction (XRD) (Shimadzu XRD 7000, 0.15406 nm); scanning electron microscopy (SEM) (Quanta 200 3D microscope and Hitachi TM3000); transmission electron microscopy (TEM) (microscope Philips CM12).
Significant reduction of amorphous carbon fractions and pure crystalline carbon phases is obtained by halving the total weight of the sum compound of the precursors to 0.5 grams.
The data of the energy-dispersive analysis of the front and back surfaces of the sample reflecting the integral ratio of the elements are presented in Fig. 4b, f.
The right side of the coating (a); the element analysis data (b) of right side of the coating; the right sides of the coating (c), (d); the backside of the boron carbide coating (e); the elemental analysis of the backside (f).
Online since: March 2011
Authors: Wolfgang J. Choyke, Robert P. Devaty, Takeshi Ohshima, Fei Yan, A. Espenlaub
In Fig. 3 we show data for the intensity ratio of the 4271Å line to the 4288Å line in the temperature interval 1200ºC to 1320ºC.
We thank Kent Berthoud of the University of Pittsburgh for help in taking data and data reduction.
Online since: December 2012
Authors: Guo Ning Liu, Qian Qian Guo, Cheng Li, Hua Dong Zhao, Sheng Gang Ma, Wei Yang
It looks clear now the good water management is not only necessary for efficient water irrigation in the arid areas like Ningxia and Gansu provinces, and the prevention of disastrous consequences in the Yellow River region [3], solving the drinking water shortage in Beijing and Tianjin, but also is important for the reduction of annual damages to human beings caused by frequent droughts and floods across the mainland China.
Architecture of Designed System According to mainland laws and rules [6-7], the mechanism of current administration taking charge of the hydraulic engineering(s) and the business affiliated to them can be described as: a) Governmental water resource agencies of provincial level or national level are responsible for the inspection and management of large hydraulic engineering(s) in service; b) The agencies in section a also play a leading role in the monitoring of the whole process of large and important hydraulic engineering(s) to be built or constructed; c) The management of water resources in rural regions largely for irrigation purpose is in the power of WUA though it has kept evolving for years [4-5]; d) Data and information from the real-time monitoring of the hydraulic engineering(s) shall be shared within all the sub-branches of the Ministry of Water Resources directly, this becomes even more crucial when emergent situations are encountered; e) These agencies need regularly organize
For agencies that have the authority to access to certain confidential information and data, the system provides intranet web interface.
Fig.2 Bottom layers of the comprehensive system All the information, message and collected data shall be stored in the form of databases and SQL system is advised for databases operation.
Online since: January 2013
Authors: Heiji Watanabe, Shuhei Mitani, Yuki Nakano, Takashi Nakamura, Takayoshi Shimura, Takuji Hosoi, Yusuke Uenishi
In the case of SiO2/Si structures, the data are well fitted by a straight line with slope of 1.00 regardless of the oxidation temperature, verifying the relative permittivity of SiO2 on Si to be 3.91.
Although the data for SiO2/SiC structures can also be fitted linearly, the slope is found to be 1.11.
Although the density of thermal oxides on Si was reported to decrease with increasing oxidation temperature [5], the data obtained for SiO2/Si(001) structures oxidized at both 1000 and 1150°C were well fitted by a straight line.
This reduction in relative permittivity is probably due to the reduced density of the oxide film resulting from the complex oxidation mechanisms inherent to SiC.
Online since: September 2013
Authors: Yan Jie, Kai Yong Jiang
Higher copper content of MMC with higher conductivity will deliver significant strength reduction.
The experimental and predicted data are plotted.
Using the results presented in RSM, linear model is the most optimal and using quadratic polynomial model to fit the test data of effect is significant.
Predicted response of Conductivity data Fig.1(b)Contour plots of the sintering temperature and TiC %(ball time7.5h) (a) (b) Fig. 2(a) Surface plot of Conductivity vs.
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