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Online since: September 2011
Authors: Zhen Yu, Ai Li Jiang
The data were analyzed statically for differences using one-way analysis of variance (ANOVA) to test the differences among all means.
CAT activity increased in tissues at 5.0 and 10.0 μg L-1 after 5 days, but there was a trend toward reduction in CAT activity in tissues at 15.0 μg L-1.
In our study, reduction in the CAT activity in tissues can be attributed to recorded high SOD activity due to OPs pesticide induced O2- production.
In the present study, observed reduction in M. edulis protein content may be due to general stress response.
Online since: February 2013
Authors: Václav Janeček, Josef Hynek
He realized that managers attached high levels of importance to product quality improvement, reduction of production lead-times and reduction of production costs.
We can see that the most desired benefits is “cost reduction” that could be easily anticipated taking into account current economic conditions and pressures to economize wherever possible.
Small: Objectives for adopting advanced manufacturing systems: promise and performance, Industrial Management & Data Systems, Vol. 98, No. 3 (1998), pp. 129-137
Online since: January 2016
Authors: Amer E. Amer, Iman El-Mahallawi, Ahmed Y. Shash, Moataz A. El-Saeed
As the data on the service life of composite structures is becoming available, it can be safely said that they are durable, maintain dimensional integrity, resist fatigue loading and are easily maintainable and repairable.
The strength and hardness reduction by increasing the wt.% fraction addition of ZrO2 nanoparticles beyond 3 wt.% has probably occurred due to the increase in porosity.
Additions Weight Loss (mg) Friction Coefficient 1 A356 3.7 0.39 2 A356 + 1% ZrO2 4.1 0.37 3 A356 + 2% ZrO2 4.2 0.38 4 A356 + 3% ZrO2 4.9 0.41 5 A356 + 5% ZrO2 5.3 0.43 The results show that the addition of 1 weight% nanoparticles did not produce a significant change in the wear resistance of the hypo-eutectic alloy A356, though there was a reduction in the friction coefficient.
Increasing the stirring speed over 1500 rpm causes a reduction in tensile strength due to the increase in micro-porosity.
Online since: October 2018
Authors: Denis Rinatovich Salikhyanov, Sergei Gladkovsky, A.I. Potapov
The main ones are the quality of initial ingots depending on the technology of melting and casting (surface quality, metal plasticity level, dimension of shrinkage defects, etc.) as well as regimes of subsequent rolling (temperature, reduction per pass, stress-strain state of the metal).
KCI IES UB RAS’s Plastometric complex is equipped with data collection and processing system on the basis of PC with quick-operating analog-to-digital converter PCI-1713, software package GeniDAQ and software GENIE (Advantech).
Analysis of reduction schedule of ingots and the roll pass design on the breakdown mill 850 shows that rolling bloom of 220x220 in cross-section at the initial 10 – 15 passes makes unfavorable stress-strain state in the presence of tensile stress of the metal in the axial zone of the ingot.
The investigated steels are characterized by significant reduction in the plasticity level at temperatures below 1050 °C due to appearance of brittleness and relatively low deformation resistance (50 – 250 MPa) in the range of rolling temperatures.
Online since: November 2005
Authors: Olivério Moreira Macedo Silva, Sandro Aparecido Baldacim, Cosme Roberto Moreira Silva, Claudinei dos Santos
The presence of these phases in the grain boundaries, triple junction and matrix/whiskers interface resulted in beneficial effects for the mechanical properties at room temperatures, as a consequence of the acicular grain growth and the reduction of the inherent flaw size.
According the literature data [22], this phase is harder that βSi3N4.
Other aspect important observed, specially about CTR sintering aids compositions, was related with the whiskers interference on matrix grains, that occasioned the reduction of the growing of β-grains.
This reduction will promote a decreasing of fracture toughness, because the toughening mechanisms require high aspect ratio comparing with whiskers as β-grains, serving of obstacle for crack propagation.
Online since: October 2011
Authors: Li An Hou, Zhen Jie Ren, Wen Biao Wang, Chun Long Zhuang, Zhi Li Chen
Although it was propitious to operate under higher temperature condition for larger freshwater yield , taking anti-fouling, energy consumption reduction and other factors into consideration, the best actual operating temperature of system was in the range of 70~80 ˚C.
If the operating pressure was less than 16kPa, the vacuum pump would restart frequently and thus increase the electricity consumption; if the operating pressure was higher than 20kPa, the freshwater yield would reduce significantly Figure 3 Effect of the inner pressure of desalination unit on freshwater yield Influence of the device operating temperature on performance coefficient According to the conservation of energy and formula (4-1), the steady-state performance coefficient of device could be calculated by the experimental data.
The reduction of pressure was propitious to evaporation and thus helped improve the system performance coefficient.
Although it was propitious to operate under higher temperature condition for larger freshwater yield , taking anti-fouling, energy consumption reduction and other factors into consideration, the best actual operating temperature of system was in the range of 70~80 ˚C. 4) The operating pressure of device had important influence on the performance coefficient and freshwater yield.
Online since: October 2011
Authors: She Liang Wang, Yu Li Yong, Xi Ping Jiang
During temperature reduction, because of the concrete shrinkage and constraint force of the frozen liner, especially temperature stress, the liner concrete tends to flaw.
If figure of ΔT is positive, then the liner will bear vertical compression; (2)When the cement of the liner of HPC is experiencing temperature reduction, if figure of is negative, then the liner will bear vertical tensile force.
Computing formula of outer constraint of concrete: Among this formula, According to experimental data on crack control of mass concrete in building construction and water conservancy project, we can know: when using relatively good sliding layer, the value of is just one third of that without sliding layer, this can obviously help reduce outer constraint, reduction of constraint stress can greatly reduce the possibility of happening crack of high performance concrete.
Online since: September 2013
Authors: Mei Hua Zhang, Xin Yi Xiang, Qiang Wu
Introduction On Mar. 4th, 2011, the Chongqing Government claimed that, at the end of the 12th five years, the electronic information industry will account for more than 30% of total industrial output value in Chongqing, and complete basically the largest laptop production base and offshore data processing center.
Currently the production location is Chongqing and the products were sold to the whole region of Southwest China, with the reduction of logistics cost being 400 Yuan per ton.
Considering sufficient natural gas resource in Chongqing compared to Taizhou, reduction in energy cost is as high as 400 Yuan per ton.
Costs of logistics, energy, public services, favorable policies being all included, cost reduction for every ton products was about 1000 Yuan.
Online since: December 2012
Authors: Li Chao Ding, Chun Hua Liu, Yun Nen Chen
On the basis of the data, more than 50 million people just in Asia were affected by the groundwater with arsenic pollution.
Arsenic can also be released into the environment through the weathering, oxidation, reduction and dissolution under the natural conditions.
Electric agglomerate[16,17] is a method to make metal ions enrichment and treatment after oxidation and reduction in anode and cathode respectively by electrolytic process.
Arsenic is not regard as essential element for plants generally, but it can stimulate the growth and development of plants for its reduction to improve the activity of oxidase in plant’s cells or it can kill the bacterias harmful to plants.
Online since: May 2014
Authors: Shane C. Kennett, Kip O. Findley
The larger PAGS conditions have a higher resistance to tempering, i.e. smaller reduction in strength, while the strength of the small PAGS condition is reduced by 46 pct after HTT.
(b) Reduction in FS from the AsQ condtion after tempering versus PAGS.
For the equiaxed PAG conditions in the current study, Vickers microhardness was strongly correlated with 1% FS by: σFS=0.36 H-159 MPa (2) Both the tensile and microhardness data vary in the same manner with PAGS; i.e. strength increases in the AsQ and LTT conditions as PAGS decreases, and strength decreases in the HTT condition as PAGS decreases.
The METT decreases significantly with large reduction in PAGS (Figure 4b).
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