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Online since: May 2014
Authors: Qiu Mei Zhang, Wei Mei Zhang
The environment material is of great advantage in terms of effective usage of resources and energy and reduction on the environmental capacity and it is an important development direction for realizing sustainable development of material industry.
Tab.1 Classification of ecological environment material ecological environment material classification related products environmental compatibility material purely natural material wood, bamboo and stone biomimetic material artificial bone, joint prosthesis and visceral organ ecological building material green packaging bag and packaging container green packaging materials nontoxic decorative material and environmental compatibility material degradable material biodegradable plastics and degradable inorganic phosphate material that can be manufactured and used in a recyclable way recycled paper, regenerated plastics, secondary metal, cyclic utilization concrete environmental engineering material environmental modification material precipitating, neutralizing and oxidation reduction material used for controlling water pollution; sand stabilization and vegetation material used for preventing soil desertification environmental depollution material material used for filtering, separating
This may offer basic data and demonstration for carrying out the environmental evaluation standard of material.
The environment material is of great advantage in terms of effective usage of resources and energy and reduction on the environmental capacity and it is an important development direction for realizing sustainable development of material industry.
Significant Use for Reference Of To the legal and regulatory systems subject to energy-saving and emission-reduction In China [J]. research on rule of law,2008,(6):21 (In Chinese) [3] Zheng Jiliang, Chen Weiping, Fu Hong.
Tab.1 Classification of ecological environment material ecological environment material classification related products environmental compatibility material purely natural material wood, bamboo and stone biomimetic material artificial bone, joint prosthesis and visceral organ ecological building material green packaging bag and packaging container green packaging materials nontoxic decorative material and environmental compatibility material degradable material biodegradable plastics and degradable inorganic phosphate material that can be manufactured and used in a recyclable way recycled paper, regenerated plastics, secondary metal, cyclic utilization concrete environmental engineering material environmental modification material precipitating, neutralizing and oxidation reduction material used for controlling water pollution; sand stabilization and vegetation material used for preventing soil desertification environmental depollution material material used for filtering, separating
This may offer basic data and demonstration for carrying out the environmental evaluation standard of material.
The environment material is of great advantage in terms of effective usage of resources and energy and reduction on the environmental capacity and it is an important development direction for realizing sustainable development of material industry.
Significant Use for Reference Of To the legal and regulatory systems subject to energy-saving and emission-reduction In China [J]. research on rule of law,2008,(6):21 (In Chinese) [3] Zheng Jiliang, Chen Weiping, Fu Hong.
Online since: February 2014
Authors: Zhan Jun Liu
The finished and preformed forgings of the rear lower arm are shown respectively, the shape of the rear lower arm is very complex.The tops of three branch arms are thick lumps and its central part consits of quite thin ribs.This forging is much more slender than the ordinary weldment made of steel plate and its weight is also lightened enormously.It seems that the forging is a limit example of pursuing the weight reduction.By taking great pains in forging scheme and die design, the forging is a success eventually.Simulation results indicate that the essential reason to form lap is the return when the material contacts the ends and the non-symmetrical return intensifies the depth of the lap.The lap was formed at the last moment.According to the simulation results, the dies was ameliorated.
The 2-D process simulation with DEFORM was performed.The normal and shear component of the contact stress distribution at the end of the stroke was used as load input data for the subsequent stress.
Application of rigid vlsco plastic finite element in the reforming of light-weight vehicle construction Owing to the shock of oil crisis and deterioration of the earth environment.reducing oil consumption of automobiles has become the focus of the worlds attention.Reducing oil consumption can not only save energy, but also lower earth warm.In fact, it has been proved that oil consumption can be reduced effectively by light automobile construction besides improving drive performance of an automobile.It is a better way to use aluminum alloy instead of steel for realizing the weight reduction.It is well known that the mechanical strength of aluminum alloy is near a half as much as that of steeI, but its specific gravity is about one third as much as that of steel.Moreover, by means of improving the automobile design and forging technique, integrated or hollow forgings can be obtained[7]~ [8].Therefore, by using aluminum alloy instead of steel, the forging may be half weight in general.The
Forging process of the rear lower arm The finished and preformed forgings of the rear lower arm are shown respectively, the shape of the rear lower arm is very complex.The tops of three branch arms are thick lumps and its central part consits of quite thin ribs.This forging is much more slender than the ordinary weldment made of steel plate and its weight is also lightened enormously.It seems that the forging is a limit example of pursuing the weight reduction.By taking great pains in forging scheme and die design, the forging is a success eventually.The material of the rear lower arm is 6061 alloy, and the billet shape is cylindrical.The billet,with the dimensions of 110mm in height and 147.5mm in diameter and the weight of 5.08kg, was forged in the 25000kN friction screw press at 450 temperature.There are 21 steps of the process for the forging, of which the main forging steps are bust, blocking and finish-forging.The key step is bust, in which the core problem is how to transfer the
Fig.1 Geometry of differential side gear Fig.2 Schemtic illustration of billet and cavity Fig.3 The lap defect occurs on the surface of metal Conclusions The finished and preformed forgings of the rear lower arm are shown respectively, the shape of the rear lower arm is very complex.The tops of three branch arms are thick lumps and its central part consits of quite thin ribs.This forging is much more slender than the ordinary weldment made of steel plate and its weight is also lightened enormously.It seems that the forging is a limit example of pursuing the weight reduction.By taking great pains in forging scheme and die design, the forging is a success eventually.Simulation results indicate that the essential reason to form lap is the return when the material contacts the ends and the non-symmetrical return intensifies the depth of the lap.The lap was formed at the last moment.According to the simulation results, the dies was ameliorated.
The 2-D process simulation with DEFORM was performed.The normal and shear component of the contact stress distribution at the end of the stroke was used as load input data for the subsequent stress.
Application of rigid vlsco plastic finite element in the reforming of light-weight vehicle construction Owing to the shock of oil crisis and deterioration of the earth environment.reducing oil consumption of automobiles has become the focus of the worlds attention.Reducing oil consumption can not only save energy, but also lower earth warm.In fact, it has been proved that oil consumption can be reduced effectively by light automobile construction besides improving drive performance of an automobile.It is a better way to use aluminum alloy instead of steel for realizing the weight reduction.It is well known that the mechanical strength of aluminum alloy is near a half as much as that of steeI, but its specific gravity is about one third as much as that of steel.Moreover, by means of improving the automobile design and forging technique, integrated or hollow forgings can be obtained[7]~ [8].Therefore, by using aluminum alloy instead of steel, the forging may be half weight in general.The
Forging process of the rear lower arm The finished and preformed forgings of the rear lower arm are shown respectively, the shape of the rear lower arm is very complex.The tops of three branch arms are thick lumps and its central part consits of quite thin ribs.This forging is much more slender than the ordinary weldment made of steel plate and its weight is also lightened enormously.It seems that the forging is a limit example of pursuing the weight reduction.By taking great pains in forging scheme and die design, the forging is a success eventually.The material of the rear lower arm is 6061 alloy, and the billet shape is cylindrical.The billet,with the dimensions of 110mm in height and 147.5mm in diameter and the weight of 5.08kg, was forged in the 25000kN friction screw press at 450 temperature.There are 21 steps of the process for the forging, of which the main forging steps are bust, blocking and finish-forging.The key step is bust, in which the core problem is how to transfer the
Fig.1 Geometry of differential side gear Fig.2 Schemtic illustration of billet and cavity Fig.3 The lap defect occurs on the surface of metal Conclusions The finished and preformed forgings of the rear lower arm are shown respectively, the shape of the rear lower arm is very complex.The tops of three branch arms are thick lumps and its central part consits of quite thin ribs.This forging is much more slender than the ordinary weldment made of steel plate and its weight is also lightened enormously.It seems that the forging is a limit example of pursuing the weight reduction.By taking great pains in forging scheme and die design, the forging is a success eventually.Simulation results indicate that the essential reason to form lap is the return when the material contacts the ends and the non-symmetrical return intensifies the depth of the lap.The lap was formed at the last moment.According to the simulation results, the dies was ameliorated.
Online since: June 2020
Authors: Auppatham Nakaruk, Du Ang Dao Channei, Thotsaphon Threrujirapapong, Wilawan Khanitchaidecha, Yi Yi Zaw
The data suggested that the anatase/rutile ratio of TiO2 can be controlled through the calcination process.
The phase transformation data strongly indicated the liner function between percentage of rutile phase and calcination temperature.
Both data strongly indicated that the percentage of rutile was increased linearly with the calcination temperature.
The data was associate with the XRD patterns results; the specific surface area was decreased by increasing the rutile percentage.
The phase transformation data strongly indicated the liner function between rutile phase percentage and calcination temperature.
The phase transformation data strongly indicated the liner function between percentage of rutile phase and calcination temperature.
Both data strongly indicated that the percentage of rutile was increased linearly with the calcination temperature.
The data was associate with the XRD patterns results; the specific surface area was decreased by increasing the rutile percentage.
The phase transformation data strongly indicated the liner function between rutile phase percentage and calcination temperature.
Online since: September 2014
Authors: Xian Feng Li, Xiao Peng Hua
Without loss of generality, we assume that the matrix X with size of m×n represents the all training data points, the matrix X1 with size of m1×n represents the data points of class 1 (positive class), and the matrix X2 with size of m2×n represents the data points of class 2 (negative class), where m=m1+m2.
It buids an adjacency graph incorporating neiborhood information of the data set.
LPP preserves well the intrinsic geometry of the data and local structure.
That is the global geometric structure of the corresponding data space will be reflected.
The class of an unknown data point xRn is determined as class(x)=
It buids an adjacency graph incorporating neiborhood information of the data set.
LPP preserves well the intrinsic geometry of the data and local structure.
That is the global geometric structure of the corresponding data space will be reflected.
The class of an unknown data point xRn is determined as class(x)=
Online since: September 2018
Authors: Cristiano Stefano Mucsi, F.C. Ceoni, Maicon Cavalieri de Alencar, Luís Cláudio Aranha, J.L. Rossi
The device is intended to yield data for analysis of in vitro torquing and detorquing experiments, for fixation and removing of abutments in dental implants and implants in artificial bones.
The data showed a 15% to 48% change of the desired microtorque.
The data acquisition system is completed with the LabView® graphic and programming environment.
The mechanical driver, torque sensing and data acquisition area shown An Atmel AVR microcontroller was chosen as the stepper motor driver controller interfaced by a Schotky bridge.
The choice was made to provide torqueing data on two significantly different abutments systems.
The data showed a 15% to 48% change of the desired microtorque.
The data acquisition system is completed with the LabView® graphic and programming environment.
The mechanical driver, torque sensing and data acquisition area shown An Atmel AVR microcontroller was chosen as the stepper motor driver controller interfaced by a Schotky bridge.
The choice was made to provide torqueing data on two significantly different abutments systems.
Online since: May 2014
Authors: Benjamin Marussig, Gernot Beer, Christian Duenser
Isogeometric finite element methods and more recently boundary element methods have been successfully applied to problems in mechanical engineering and have led to an increased accuracy and a reduction in simulation effort.
Based on an example of a spherical excavation we show that a significant reduction in the number of parameters for describing the excavation boundary as well as an improved quality of the results can be obtained.
We would like to point out, that regarding the geometry the error of the isogeometric geometry representation is determined by the precision of the input data.
The numerical results demonstrated that, compared to a conventional isoparametric analysis, a significant reduction in the parameters to describe the geometry and a gain in accuracy of the results can be achieved.
Based on an example of a spherical excavation we show that a significant reduction in the number of parameters for describing the excavation boundary as well as an improved quality of the results can be obtained.
We would like to point out, that regarding the geometry the error of the isogeometric geometry representation is determined by the precision of the input data.
The numerical results demonstrated that, compared to a conventional isoparametric analysis, a significant reduction in the parameters to describe the geometry and a gain in accuracy of the results can be achieved.
Online since: January 2019
Authors: Gang Chen, Seng Peng, Xiao Bin Tang, Hao Wang, Yan Wei
The results showed that the highest pour point reduction depression was achieved as 9.8℃ with 2000ppm PH3O-3 in 2# crude oil.
The saturated hydrocarbons were separated, and the paraffin crystal morphology studies were conducted to elucidate the mechanism of pour point reduction.
Only the average data were reported hereinafter.
The results showed that the highest pour point reduction depression was achieved as 9.8℃ with 2000ppm PH3O-3 in 2# crude oil.
The saturated hydrocarbons were separated, and the paraffin crystal morphology studies were conducted to elucidate the mechanism of pour point reduction.
Only the average data were reported hereinafter.
The results showed that the highest pour point reduction depression was achieved as 9.8℃ with 2000ppm PH3O-3 in 2# crude oil.
Online since: September 2014
Authors: Mauricio A. Algatti, Konstantin Georgiev Kostov, Roberto Y. Honda, Milton E. Kayama, Emerson F. Lucena, Maria A. Ribeiro, Rogério Pinto Mota, Elson de Campos
The FTIR data show that the main functional groups in the polymeric film structure are C-H (3000 cm-1 to 2900 cm-1), C-O-C and C-O (1200 cm-1 to 900 cm-1) similar to the polyethylene oxide (PEO) structure.
In order to retain the monomer structure within the plasma deposited films and consequently its functionality, many different issues have been addressed in recent literature as for instance: film deposition under low RF mean power level by controlling the power supply on/off ratio [18,19]; decreasing of monomer residence time and consequently the reduction of its interaction with the plasma environment [19]; cooling of substrate with liquid nitrogen [20]; energy reduction of the ions which reach the substratum [19,20].
This result is in the complete agreement with the reduction of absorption of C-O and C-O-C bonds shown in the same figure.
The contact angle of pp-diglyme film and surface energy against film thickness Table 1 shows the main vibration modes of pp-diglyme, biocompatible polyurethane and PEO from analysis of data presented in fig. 5.
In order to retain the monomer structure within the plasma deposited films and consequently its functionality, many different issues have been addressed in recent literature as for instance: film deposition under low RF mean power level by controlling the power supply on/off ratio [18,19]; decreasing of monomer residence time and consequently the reduction of its interaction with the plasma environment [19]; cooling of substrate with liquid nitrogen [20]; energy reduction of the ions which reach the substratum [19,20].
This result is in the complete agreement with the reduction of absorption of C-O and C-O-C bonds shown in the same figure.
The contact angle of pp-diglyme film and surface energy against film thickness Table 1 shows the main vibration modes of pp-diglyme, biocompatible polyurethane and PEO from analysis of data presented in fig. 5.
Online since: August 2013
Authors: Andreea Dobra
One-way maybe influenced by reduction of production costs from additional times.
The objectives that may be attained through the implementation of an integrated Tool Management System include: improvement in performance of the Production System; high levels of machine utilization; reduction in downtime; optimum tool selection; reduction in variety and number of tools used; optimized industrial purchasing; supplying tools to machines just in time involving the engineering department in the concerns of the shop.
Barcode systems provide an array of benefits: operational efficiency, better customer service, improved visibility of key business information to management, speed, accuracy, data integrity, ease of implementation, cost effectiveness.
Include feature: Master Editor: Store Employee, Organization particular / contact and Material / Product information listing: Query, print or export master data and inventory data to file for viewing Security: Control user to access the data with user management.
Bar codes provide fast, easy, and accurate method of data manipulation.
The objectives that may be attained through the implementation of an integrated Tool Management System include: improvement in performance of the Production System; high levels of machine utilization; reduction in downtime; optimum tool selection; reduction in variety and number of tools used; optimized industrial purchasing; supplying tools to machines just in time involving the engineering department in the concerns of the shop.
Barcode systems provide an array of benefits: operational efficiency, better customer service, improved visibility of key business information to management, speed, accuracy, data integrity, ease of implementation, cost effectiveness.
Include feature: Master Editor: Store Employee, Organization particular / contact and Material / Product information listing: Query, print or export master data and inventory data to file for viewing Security: Control user to access the data with user management.
Bar codes provide fast, easy, and accurate method of data manipulation.
Online since: September 2014
Authors: Guo Ming Gao, Ting Wang, Tao Li, Jun Hua Zhang
Fig.2 Hydraulic condition of density current immersing point
Guanting Reservoir
Xiaolangdi Reservoir
Liujiaxia Reservoir
Physical Model of Xiaolangdi
Flume in YRIHR
Flume of Fanjiahua(fine sand)
Lots of recorded data and testing results indicate that the location of density current immersing relates to water depth, inflow and sediment concentration, etc.
To plot the density current immersing data in Fig.2 shows those are almost consistent with common law.
The data results show that: influenced by operational mode of reservoir and terrain, the formation of sand bar in Zhenshui estuary has certain inevitabilities.
Field observation data show that: there is little incoming water and sediment in Zhenshui, and basically there is no sediment.
Report on model test of the second operational mode of Xiaolangdi Reservoir for flood control and sedimentation reduction during later sediment retaining period [R].
To plot the density current immersing data in Fig.2 shows those are almost consistent with common law.
The data results show that: influenced by operational mode of reservoir and terrain, the formation of sand bar in Zhenshui estuary has certain inevitabilities.
Field observation data show that: there is little incoming water and sediment in Zhenshui, and basically there is no sediment.
Report on model test of the second operational mode of Xiaolangdi Reservoir for flood control and sedimentation reduction during later sediment retaining period [R].