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Online since: October 2014
Authors: Guang Fu Li, Guan Jun Li, Jun Peng, Mao Long Zhang, Zhi Yuan Sun
For integrity analysis of the dissimilar metal weld, it is essential to have enough data of material properties and microstructure in database.
However, the published data have not been enough.
In this work, the mechanical behavior of dissimilar metal weld SA508-52M-316L in various environments was investigated to provide basic data, especially those of SA508-52M part which had significant change in microstructure an micro-chemistry profiles [9].
The data of the potential was converted to standard hydrogen electrode (SHE) scale.
When tested at +300 and +400mV(SHE), brittle failure of SCC took place around the SA508-52M interface, causing the significant drop of elongation and reduction in area.
Online since: June 2010
Authors: Wei Yu Shi, Hua Li, Li Ye Chu, Hong Bo Shao
Results indicated that the co-remediation led to significantly greater (p < 0.01) reduction in the lead concentration in plants than by singly adding to zeolite.
Results and Discussion The Pb concentration in shoots decreased progressively in all four zeolite doses, irrespective of the data in pot experiment I or pot experiment II.
The difference of data between no humic acid (NHA) and HA was that the lead concentration in grape roots and shoots by HA treatment declined more.
Addition of humic acids resulted in increasing of lead of water-soluble fraction and decreasing of exchangeable fraction, but the major data of content of water-soluble lead was not varying significantly.
Maybe the above could explain why humic acids just caused significant reduction of lead concentration in plants, especially aerial parts at low Pb treatment.
Online since: September 2008
Authors: Jochen Friedrich, Bernd Thomas, Birgit Kallinger
In this work, the influence of several pre-treatments of the SiC substrate prior to epitaxial growth and different epitaxial growth parameters on the reduction of the BPDs in the SiC epilayers was investigated on 4° off-axis substrates.
The idea is to modify the local growth conditions and the step flow for a stronger reduction of the BPD density during epitaxy.
The substrates 3s, 6s, 10s and 13s were defect selectively etched in molten KOH for comparison of EPD data of substrates and epilayers.
Regarding the influence of C/Si ratio on the BPD reduction, no evident difference is found for C/Si ratios of 0.75, 0.9 and 1.5 in our experiments, whereas Chen and Capano [3] presented a strong dependence of the BPD reduction on the C/Si ratio for 4° off-axis wafers.
The reduction of BPD density in the epitaxial layers is always accompanied by an increase of TED and TSD densities, although the overall EPD does not change too much.
Online since: June 2013
Authors: Wiktoria Ratuszek, Agnieszka Kurc-Lisiecka, Wojciech Ozgowicz, Joanna Kowalska
The austenite steel was deformed by cold-rolling to 20, 40 and 70% reduction.
Then samples were deformed by cold-rolling to 20, 40 and 70% of rolling reduction.
After 40% of rolling reduction in the martensite texture the fiber α1=<110>║RD with the strongest {001}<110> orientation is still.
Magnetic investigations revealed that the volume fraction of martensite increases with the increasing cold reduction in all three melts of AISI 304 steel.
The increasing deformation to 70% of rolling reduction leads to martensite transformation γ→α’ in the steel structure.
Online since: December 2012
Authors: Suriati Sufian, M. Abdus Salam, Ye Lwin
The presence of nickel in mixed oxides catalyzed the reduction of Co-Al-O spinels.
Table 1: X-ray diffraction data of Ni-Co-Al hydrotalcites The relative dimensions of the cell parameters correspond to the rhombohedral 3R stacking sequence of the hydrotalcite crystals [17].
The first reduction peak with its broad shoulder represents successive reduction of Co3+ and Co2+ from Co3O4 spinel: Co3O4 → CoO →Co0 [24, 25].
The weak and broad peaks at reduction temperature range of 600°C to 750°C correspond to the reduction of Ni and Co (II) from spinel-like phases of CoAl2O4 and NiAl2O4.
The closeness of the reduction peaks in the ternary hydrotalcites indicates that strong interaction exists between Ni and Co species and that Ni acts as a catalyst for reduction of Co-Al-O spinels.
Online since: May 2012
Authors: Mazlan Said, Alias Mohd Nor, Jazair Yahya Wira, Tan Wee Choon, Samion Syahrullail, Noge Hirofumi
Since the reduction of petroleum production by Organization of Petroleum Exporting Countries (OPEC), the research on alternative fuel for diesel engine has gain interest.
The use of DHW Emul can give significant reduction of NOx and Smoke emissions without deterioration of CO emission.
Engine performance and emissions data are obtained under stable operating conditions at engine speed of 1500rpm.
Hydraulic oil content in DHW Emul give good effect of CO emission reduction, however, the chemical reason of this result is still under investigation.
DHW Emul show simultaneous reduction of NOx and Smoke compared with diesel fuel.
Online since: October 2011
Authors: Qi Qi Wei, Bei Yue Tan
Based on the recent research at home and abroad and the local meteorological data, this study aims to determine the optimum tilt angle of the solar-cell array surface and the best month on the system to achieve the optimal design of PV system.
The indoor and local river data of the experiment shows that this system has an evident effect on water decontamination.
The data to demonstrate the system is shown in Table5.
Based on the recent research at home and abroad and the local meteorological data , this study aims to determine the optimum tilt angle of the solar-cell array surface, the scale of photovoltaic system.
The indoor and local river data of the experiment shows that this system has an evident result in water decontamination.
Online since: January 2013
Authors: Tiago Vieira De Carvalho, Renato José Sassi
The main objective of BI is to transform data from information to knowledge [6].
Marzona, Data Value in Decision Process: Survey on Decision Support System in Small and Medium Enterprises.
Sinha, A Model of Data Warehousing Process Maturity.
Weir, Best Practices for Implementing a Data Warehouse.
Journal of Data Warehousing, vol. 7, n.1, winter 2002
Online since: August 2011
Authors: Kyung Mo Koo, Gyu Yong Kim, Hiroyuki Miyauchi, Yeon Woo Kang
The present study focuses on a reduction of the HHV and a change of autogenous shrinkage of the high-strength mass concrete.
The reduction mechanism of the HHV can be divided into three methods.
Hence, the first method of the aforementioned reduction mechanism is inappropriate if applied to the experiment.
HHS and ASS were determined by regression analysis with a determination coefficient of over 0.95 from the datum points.
The datum point of ASS was the bend point.
Online since: January 2017
Authors: Preeyanuj Chaemsiriwat, Weerin Wangjiraniran
This research study about the abatement cost of CO2 reduction by using fly ash as a clinker substitute in Thailand cement industry.
The information from research in Thailand and international about abatement cost of CO2 reduction for cement industry.
The quantity of CO2 reduction is equal to 3095 ktonnes CO2/year.
Using data in 2015 to calculate in this research and using information from the expert, to get accurate results.
This same method can applied to calculate cost of CO2 reduction by using biomass ash as a clinker substitute material.
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