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Online since: June 2014
Authors: Hui Min Qiao, I- Shin Chang, Yan Xia Yang
Cleaner Production (CP) is a sustainable developing pattern and an environmental strategy based upon source reduction, under the context of rapid economic development, excessive resource utilization and consumption, fast depletion of natural resources, and severe degradation and deterioration of environmental quality.
Introduction In May 1989, United Nations Environment Program (UNEP) put forward the concept of Cleaner Production (CP), which was defined as the continuous application of an integrated preventive environmental strategy to processes, products and services to increase the overall ecological benefits and to reduce human and environmental risks, such as the conservation of raw materials and energy, the elimination of toxic materials and the reduction in the quantities and toxicity of wastes and emissions during processes; the reduction of negative impacts throughout the life cycle of the product: from raw material extraction to ultimate disposal; and the incorporation of environmental considerations into the design and delivery of services [1].
According to the statistical data, companies who have implemented CP and successfully past the assessment and acceptance of CPA are mostly allocated within seven industries, including Chemical Materials and Products manufacturing, Textile, Light Industries, Metal Surface Treatment and Heat Treatment Processing, Ferrous Metal Smelting and Rolling Processing and Non-Metallic Mineral Products Industries, shown in Figure 2.
Introduction In May 1989, United Nations Environment Program (UNEP) put forward the concept of Cleaner Production (CP), which was defined as the continuous application of an integrated preventive environmental strategy to processes, products and services to increase the overall ecological benefits and to reduce human and environmental risks, such as the conservation of raw materials and energy, the elimination of toxic materials and the reduction in the quantities and toxicity of wastes and emissions during processes; the reduction of negative impacts throughout the life cycle of the product: from raw material extraction to ultimate disposal; and the incorporation of environmental considerations into the design and delivery of services [1].
According to the statistical data, companies who have implemented CP and successfully past the assessment and acceptance of CPA are mostly allocated within seven industries, including Chemical Materials and Products manufacturing, Textile, Light Industries, Metal Surface Treatment and Heat Treatment Processing, Ferrous Metal Smelting and Rolling Processing and Non-Metallic Mineral Products Industries, shown in Figure 2.
Online since: May 2022
Authors: Boonyanit Thaweboon, Sroisiri Thaweboon, Cherdkul Sopavanit
No significant biofilm reduction was observed in A. viscosus.
In addition, F. nucleatum was found to be more sensitive to vanillin since biofilm reduction started to be noticeable at low concentration (0.1% vanillin).
No significant biofilm reduction was observed in A. viscosus.
gingivalis 1.052+0.035 1.075+0.040 0.886+0.065* 0.643+0.017* F. nucleatum 0.815+0.011 0.794+0.012* 0.756+0.013* 0.560+0.008* A.viscosus 1.243+0.010 1.252+0.009 1.242+0.016 1.237+0.006 A.actinomycetemcomitans 1.412+0.021 1.423+0.018 1.023+0.039* 0.871+0.076* *significant difference from control at p-value <0.05 data expressed as mean + SD The percentages of biofilm reduced compared with controls were presented in Figure 1.
In our experiment, F. nucleatum was found to be more sensitive to vanillin since biofilm reduction started at low concentration.
In addition, F. nucleatum was found to be more sensitive to vanillin since biofilm reduction started to be noticeable at low concentration (0.1% vanillin).
No significant biofilm reduction was observed in A. viscosus.
gingivalis 1.052+0.035 1.075+0.040 0.886+0.065* 0.643+0.017* F. nucleatum 0.815+0.011 0.794+0.012* 0.756+0.013* 0.560+0.008* A.viscosus 1.243+0.010 1.252+0.009 1.242+0.016 1.237+0.006 A.actinomycetemcomitans 1.412+0.021 1.423+0.018 1.023+0.039* 0.871+0.076* *significant difference from control at p-value <0.05 data expressed as mean + SD The percentages of biofilm reduced compared with controls were presented in Figure 1.
In our experiment, F. nucleatum was found to be more sensitive to vanillin since biofilm reduction started at low concentration.
Online since: May 2011
Authors: Bang Wu Chen, Zhuo Hao Xiao
For example, field instruments for environment monitoring can give the environment monitoring center and sub center with real time data of the regional surface water or atmosphere or waste water or waste gas or noise.
At the same time, the environment monitoring system can reflect and judge the variables of environmental factors by integrating the data given by the field instruments.
At present, the measurement infrastructure of emission in China is weak, so the environmental department can hardly get the real data of emission of enterprises, and also can hardly track and verify the emissions trading among enterprises The third allocation process is the restructuring of pollution right.
The ultimate goal of emissions trading is the reduction and control of pollution.
For the realization of ultimate goals of emissions trading, we hold forth some measurements for the government and other organizations involved in emissions trading: First, governments at all levels should encourage companies with advanced technology of emissions control or with heavy task of emissions reduction to set up joint emission treatment plants in industrial development zone or industrial function zone or in city and town, with the emissions reduction result verified to be held by funders and technical side, and they can use it to offset their emissions reduction quota or trade in the market.
At the same time, the environment monitoring system can reflect and judge the variables of environmental factors by integrating the data given by the field instruments.
At present, the measurement infrastructure of emission in China is weak, so the environmental department can hardly get the real data of emission of enterprises, and also can hardly track and verify the emissions trading among enterprises The third allocation process is the restructuring of pollution right.
The ultimate goal of emissions trading is the reduction and control of pollution.
For the realization of ultimate goals of emissions trading, we hold forth some measurements for the government and other organizations involved in emissions trading: First, governments at all levels should encourage companies with advanced technology of emissions control or with heavy task of emissions reduction to set up joint emission treatment plants in industrial development zone or industrial function zone or in city and town, with the emissions reduction result verified to be held by funders and technical side, and they can use it to offset their emissions reduction quota or trade in the market.
Online since: June 2008
Authors: Krzysztof Jan Kurzydlowski, Halina Garbacz, Krzysztof Topolski
A reduction of the grain size of titanium leads to
a significant increase in its strength and hardness.
Parameters of hydrostatic extrusion processes applied to titanium Reduction of the rod diameter [mm] Temperature Accumulated strain (ε)ε)ε)ε) Total cross-section reduction (R) Number of HE stages Ø50mm → Ø3mm above recrystallization and ambient 5.63 277 11 Ø33mm → Ø5mm ambient 3.77 43.56 12 Ø20mm → Ø3mm ambient 3.79 44.44 12 Ø12mm → Ø3mm ambient 2.77 16 5 Description of hydro - extrusion method used here can be found in the earlier publications [10-12].
Comparison with the literature data [13-18] Summary The results obtained here allow to draw the following conclusions: 1.
Ø50→Ø3 Ø33→Ø5 Ø20→Ø3 Ø12→Ø3 Ti6Al4V Data from literature Current experimental study Acknowledgements: The study was realized in the framework of the 3T08A01929 project financed by the Polish Ministry of Science and Higher Education.
Parameters of hydrostatic extrusion processes applied to titanium Reduction of the rod diameter [mm] Temperature Accumulated strain (ε)ε)ε)ε) Total cross-section reduction (R) Number of HE stages Ø50mm → Ø3mm above recrystallization and ambient 5.63 277 11 Ø33mm → Ø5mm ambient 3.77 43.56 12 Ø20mm → Ø3mm ambient 3.79 44.44 12 Ø12mm → Ø3mm ambient 2.77 16 5 Description of hydro - extrusion method used here can be found in the earlier publications [10-12].
Comparison with the literature data [13-18] Summary The results obtained here allow to draw the following conclusions: 1.
Ø50→Ø3 Ø33→Ø5 Ø20→Ø3 Ø12→Ø3 Ti6Al4V Data from literature Current experimental study Acknowledgements: The study was realized in the framework of the 3T08A01929 project financed by the Polish Ministry of Science and Higher Education.
Online since: August 2012
Authors: Ariadne de Souza Silva, J.H. Araújo, J.B. Manuel, M.J. Diniz, Uílame Umbelino Gomes
The reduction of the particle size is very important to get better properties of the hard metal.
The reduction of the coercitive field with milling time increase can be related with the reduction of free cobalt in composite.
The reduction of density can be related with the appearance of the non magnetic phases and reduction the hardness is related the reduction of density.
The hardness increase with the reduction of the particle size (pores reduction), this also originates an increase in the coercitive field.
Third edition, publisher by International Carbide Data.
The reduction of the coercitive field with milling time increase can be related with the reduction of free cobalt in composite.
The reduction of density can be related with the appearance of the non magnetic phases and reduction the hardness is related the reduction of density.
The hardness increase with the reduction of the particle size (pores reduction), this also originates an increase in the coercitive field.
Third edition, publisher by International Carbide Data.
Online since: July 2017
Authors: N. Gayathri, V.K. Shanmuganathan, S. Praveen, N. Nagendran
Reduction in micro porosity in cast part and also reduction in machining.
However, not much investigation has been carried out to study the effect of heat treatment using convection furnace on the properties of reinforced cast Al-Si alloys, with Mg and Cu as the other alloying elements. 2 Scope of the Work The Metal Casting Industry Technology Road Map [5] presented by Cast Metal Coalition in 2003 (Metal Casting Design Research Pathways-VISION 2020) had projected mechanical and physical property data and quantify the effects of microstructure on mechanical, machinability and wear, as some of the near term research needs under the areas like material property data and design process interrelationship.
The experimental results by some researchers reveal that squeezing of casts during solidification of molten metal in the mould significantly improve the microstructure, leading to grain refinement, suppression of dendrite and columnar growth and reduction in porosity.
Stirring or tapping of melt has also been experimented for obtaining microstructure which leads to enhanced properties in casting and also wear reduction in addition of nano particles to the casting.
However, not much investigation has been carried out to study the effect of heat treatment using convection furnace on the properties of reinforced cast Al-Si alloys, with Mg and Cu as the other alloying elements. 2 Scope of the Work The Metal Casting Industry Technology Road Map [5] presented by Cast Metal Coalition in 2003 (Metal Casting Design Research Pathways-VISION 2020) had projected mechanical and physical property data and quantify the effects of microstructure on mechanical, machinability and wear, as some of the near term research needs under the areas like material property data and design process interrelationship.
The experimental results by some researchers reveal that squeezing of casts during solidification of molten metal in the mould significantly improve the microstructure, leading to grain refinement, suppression of dendrite and columnar growth and reduction in porosity.
Stirring or tapping of melt has also been experimented for obtaining microstructure which leads to enhanced properties in casting and also wear reduction in addition of nano particles to the casting.
Online since: January 2012
Authors: D.K. Aspinwall, J.B. Saedon, S.L. Soo, A. Barnacle
Tool wear details are given based on resulting cutter diameter and slot width reduction.
The rate of tool diameter reduction was significant in the first ~500mm machined but which then stabilised for the remainder of the trial.
Also visible is fracture behind the cutting edge corner leading to reduction of the tool diameter by 16.4% (up to 82μm) after 520mm cut length.
Based on this, the reduction in tool diameter (inferred from slot width data) was used as a means of assessing tool wear progression, as suggested in several publications [3, 11].
The data relates to forces after cutting 520mm slot length.
The rate of tool diameter reduction was significant in the first ~500mm machined but which then stabilised for the remainder of the trial.
Also visible is fracture behind the cutting edge corner leading to reduction of the tool diameter by 16.4% (up to 82μm) after 520mm cut length.
Based on this, the reduction in tool diameter (inferred from slot width data) was used as a means of assessing tool wear progression, as suggested in several publications [3, 11].
The data relates to forces after cutting 520mm slot length.
Online since: January 2010
Authors: H. A. Cortéz, V. H. Jacobo, A. Ortiz, Rafael Schouwenaars
Strain hardening will be described by means of experimental data.
In spite of giving a good aproximation of the data, the physical processes involved in recrystallisation are not reflected in the curves.
In all cases, fitting parameters took values which indicated that recovery was not active, based on the available data.
Substituting these data into the complete model (11) sgg=-37, srx=7.1, Qrx=61400 and, krx=91 MPa µm-1/2, with a residual standard deviation of 26MPa.
Isostrain sections through the 3-dimensional response surface, using the complete model with grain growth parameters fitted to metallographic data.
In spite of giving a good aproximation of the data, the physical processes involved in recrystallisation are not reflected in the curves.
In all cases, fitting parameters took values which indicated that recovery was not active, based on the available data.
Substituting these data into the complete model (11) sgg=-37, srx=7.1, Qrx=61400 and, krx=91 MPa µm-1/2, with a residual standard deviation of 26MPa.
Isostrain sections through the 3-dimensional response surface, using the complete model with grain growth parameters fitted to metallographic data.
Online since: October 2019
Authors: Bebe Adrian Olei, Sorin Vasile Savu, Ionel Dănuț Savu, Gabriel Constantin Benga, Răzvan Ionuț Iacobici
A very important one is the protection of personal data, which is defined differently in different countries.
Vessels equipped with AIS transponders send static, dynamic and voyage related information data.
The data is transferred in regular intervals, and other vessels can automatically locate AIS equipped ships.
A safety concern, as with RIS, was the usage of private data.
D5.8 Technical recommendations on options for specifications of monitoring equipment and database set-up: description of (high level): on board systems, data transmission, database set up, data aggregation for specific stakeholders.
Vessels equipped with AIS transponders send static, dynamic and voyage related information data.
The data is transferred in regular intervals, and other vessels can automatically locate AIS equipped ships.
A safety concern, as with RIS, was the usage of private data.
D5.8 Technical recommendations on options for specifications of monitoring equipment and database set-up: description of (high level): on board systems, data transmission, database set up, data aggregation for specific stakeholders.
Online since: October 2007
Authors: Mohammad B. Shabani, T. Yamashita, E. Morita
In this study we report quantitative data on such effects for mono and multi-crystalline Si
materials with different amounts of crystal defects in the wafer bulk and different levels of boron concentration, and we
discuss PDG versus other sites of potentially competing mechanisms of metal gettering.
ICP-MS data do not provide direct information regarding the chemical state of metal impurities in the silicon.
However, less reduction of total Fe is detected for high concentration of boron in the CZ silicon.
Raising the temperature to 950 °C and higher probably leads to complete disappearance of interactive forces between Fe + and B , as we can conclude from our PDG data on heavily B doped silicon.
Shabani, Unpublished data
ICP-MS data do not provide direct information regarding the chemical state of metal impurities in the silicon.
However, less reduction of total Fe is detected for high concentration of boron in the CZ silicon.
Raising the temperature to 950 °C and higher probably leads to complete disappearance of interactive forces between Fe + and B , as we can conclude from our PDG data on heavily B doped silicon.
Shabani, Unpublished data