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Online since: February 2014
Authors: Sroisiri Thaweboon, Boonyanit Thaweboon, Plang Ngern Saksit, Passiri Nisalak, Rattiporn Kaypetch
Dental stone incorporated with 4 types of disinfectants showed antimicrobial activity against all tested microorganisms with the percentage of microbial reduction ranging from 83% to 100%.
Results Dental stone incorporated with disinfectants (Diamond Rock D, 3-iodo-2- propynylbutylcarbamate; Diamond Rock B, zeolite; Diamond Rock Z, thiabendazole and Diamond Rock T, 2-benzimidazole carbamic acid) showed antimicrobial activity against all microorganisms tested with the percentage of microbial reduction ranging from 83% to 100% compared to control (Diamond Rock D, dental stone without disinfectant) (Fig 1).
No significant difference in microbial reduction was found among the groups of dental stone incorporated with disinfectants.
Fig. 1 Microorganisms detected from each type of disinfectant-containing dental stone Regarding setting time and dry compressive strength, data are displayed in Table 1.
Even though the antimicrobial effect may occur due to many factors inherent in dental stone itself, such as heat of hydration of the setting stone, desiccation of the cast or by the effect of salt (calcium sulfate) on the microbes [7], significant microbial reduction was observed compared to dental stone without disinfectant.
Results Dental stone incorporated with disinfectants (Diamond Rock D, 3-iodo-2- propynylbutylcarbamate; Diamond Rock B, zeolite; Diamond Rock Z, thiabendazole and Diamond Rock T, 2-benzimidazole carbamic acid) showed antimicrobial activity against all microorganisms tested with the percentage of microbial reduction ranging from 83% to 100% compared to control (Diamond Rock D, dental stone without disinfectant) (Fig 1).
No significant difference in microbial reduction was found among the groups of dental stone incorporated with disinfectants.
Fig. 1 Microorganisms detected from each type of disinfectant-containing dental stone Regarding setting time and dry compressive strength, data are displayed in Table 1.
Even though the antimicrobial effect may occur due to many factors inherent in dental stone itself, such as heat of hydration of the setting stone, desiccation of the cast or by the effect of salt (calcium sulfate) on the microbes [7], significant microbial reduction was observed compared to dental stone without disinfectant.
Online since: October 2012
Authors: He Wang, Jie Feng Huang, Ming Quan Zhang, Wei Min Zhang
On the Development of Low-Carbon Economy and Construction Industry
Jiefeng Huang1, a, He Wang2,b, Mingquan Zhang 3,c and Weimin Zhang4,d
1Hebei Normal University of Science and Technology, Qinhuangdao, Hebei, 066004 China
2Hebei Normal University of Science and Technology, Qinhuangdao, Hebei, 066004 China
3Hebei Normal University of Science and Technology, Qinhuangdao, Hebei, 066004 China
4CPI MENGDONG ENERGY GROUP CO.LTD, Neimenggu, 028000 China
atjxhjf@126.com, b 122758528@qq.com, c zhamq@126.com, d zhangweimin2012@126.com
Keywords: low carbon economy, low carbon architecture energy, conservation and emission reduction
Abstract.
The essence is the problem of efficient use of energy, the development of clean energy, and the pursuit of green GDP, and the core is innovation of the energy technology and emission reduction technology, innovation of industrial structure and transformation of system and human survival concept development.
The" road map" developed the greenhouse gas emission reduction from 25% to40% before 2020.
Green low-carbon buildings in China started late, and lack of practical experience and basic data, the existing assessment system focused on the evaluation of the quality of the built environment, emphasizing the content of land, energy efficiency, water conservation, and materials, and neglect the building itself of the economy and the use of comfort, is not conducive to the interests of developers and building users, including green to maximize the effect, but also affect the promotion and development of low carbon buildings.
The essence is the problem of efficient use of energy, the development of clean energy, and the pursuit of green GDP, and the core is innovation of the energy technology and emission reduction technology, innovation of industrial structure and transformation of system and human survival concept development.
The" road map" developed the greenhouse gas emission reduction from 25% to40% before 2020.
Green low-carbon buildings in China started late, and lack of practical experience and basic data, the existing assessment system focused on the evaluation of the quality of the built environment, emphasizing the content of land, energy efficiency, water conservation, and materials, and neglect the building itself of the economy and the use of comfort, is not conducive to the interests of developers and building users, including green to maximize the effect, but also affect the promotion and development of low carbon buildings.
Online since: December 2016
Authors: Lenka Gábrová
However, the dynamic daylight metrics (e.g. daylight autonomy, spatial daylight autonomy, useful daylight illuminance) can be more complex evaluation criteria because they are based on annual daylight illuminance data for a building site.
Whereas the static daylight performance metrics (e.g. the daylight factor and illuminance distributions) depend only on one sky condition, the dynamic daylight performance metrics (e.g. the daylight autonomy, spatial daylight autonomy, useful daylight illuminance and annual light exposure) are based on annual climate data for the given building site [1].
These dynamic daylight performance metrics take into account annual daylight data for variable sky conditions and specific building location, building orientation and also typical hours of occupancy (occupancy pattern) [10].
For the dynamic daylighting simulations, the annual daylight illuminance data were taken from the EnergyPlus weather database [21] and the time step of simulations was 60 minutes.
The differences in UDI100-2000 values between the south and north-facing office drop with the higher obstruction angle because the greater obstruction angle means a reduction of the sky light and the direct sunlight.
Whereas the static daylight performance metrics (e.g. the daylight factor and illuminance distributions) depend only on one sky condition, the dynamic daylight performance metrics (e.g. the daylight autonomy, spatial daylight autonomy, useful daylight illuminance and annual light exposure) are based on annual climate data for the given building site [1].
These dynamic daylight performance metrics take into account annual daylight data for variable sky conditions and specific building location, building orientation and also typical hours of occupancy (occupancy pattern) [10].
For the dynamic daylighting simulations, the annual daylight illuminance data were taken from the EnergyPlus weather database [21] and the time step of simulations was 60 minutes.
The differences in UDI100-2000 values between the south and north-facing office drop with the higher obstruction angle because the greater obstruction angle means a reduction of the sky light and the direct sunlight.
Online since: March 2013
Authors: Jian Xin Xie, Hao En Mao, Xue Feng Liu, Ye Zhang, Fang Qin
Dieless drawing is a kind of flexible and plastic forming process without conventional dies, which can achieve a great reduction of tube metals in single pass by means of local heating and cooling approach.
However, owing to lacking deep research in metal flowing and temperature field model during the dieless drawing of tapered metallic tube, this technology has some shortcomings of low product dimensional accuracy, small cross-section reduction, and surface treatment issue[11,12].
We defined the end of tapered tube with a largest diameter of 6mm as origin. 2.0 2.2 2.4 2.6 2.8 3.0 3.2 0 50 100 150 b) T0=1000℃, S0=25 mm External diameter Rt (mm) experimental data (v0=20 mm·min-1) experimental data (v0=40 mm·min-1) theoretical curve (v0=20 mm·min-1) theoretical curve (v0=40 mm·min-1) The distance (mm) 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 0 50 100 150 External diameter Rt (mm) a) v0=20 mm·min-1, S0=40 mm experimental data (T0=1150 ℃) experimental data (T0=1100 ℃) experimental data (T0=1000 ℃) experimental data (T0=900 ℃) theoretical curve (T0=1150 ℃) theoretical curve (T0=1100 ℃) theoretical curve (T0=1000 ℃) theoretical curve (T0=900 ℃) The distance (mm) Fig. 3 The external diameter of tapered tubes vs the distance The curves of diameter at different distances were shown in Fig. 3.
Better bus straightness degree and larger section reduction ratio of tapered tube could be obtained when the theoretical control model of drawing speed established in this paper was used.
a) v0=20 mm·min-1, S0=15 mm experimental data (T0=1100 ℃) theoretical curve (T0=1100 ℃) experimental data (T0=900 ℃) theoretical curve (T0=900 ℃) Drawing force P(N) The time(s) Drawing force P (N) experimental data (S0=15 mm) theoretical curve (S0=15 mm) experimental data (S0=40 mm) theoretical curve (S0=40 mm) The time (s) b) v0=25 mm·min-1, T0=1100 ℃ Fig. 4 Drawing force for tapered tubes vs time The curves of drawing force at different times were shown in Fig. 4.
However, owing to lacking deep research in metal flowing and temperature field model during the dieless drawing of tapered metallic tube, this technology has some shortcomings of low product dimensional accuracy, small cross-section reduction, and surface treatment issue[11,12].
We defined the end of tapered tube with a largest diameter of 6mm as origin. 2.0 2.2 2.4 2.6 2.8 3.0 3.2 0 50 100 150 b) T0=1000℃, S0=25 mm External diameter Rt (mm) experimental data (v0=20 mm·min-1) experimental data (v0=40 mm·min-1) theoretical curve (v0=20 mm·min-1) theoretical curve (v0=40 mm·min-1) The distance (mm) 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 0 50 100 150 External diameter Rt (mm) a) v0=20 mm·min-1, S0=40 mm experimental data (T0=1150 ℃) experimental data (T0=1100 ℃) experimental data (T0=1000 ℃) experimental data (T0=900 ℃) theoretical curve (T0=1150 ℃) theoretical curve (T0=1100 ℃) theoretical curve (T0=1000 ℃) theoretical curve (T0=900 ℃) The distance (mm) Fig. 3 The external diameter of tapered tubes vs the distance The curves of diameter at different distances were shown in Fig. 3.
Better bus straightness degree and larger section reduction ratio of tapered tube could be obtained when the theoretical control model of drawing speed established in this paper was used.
a) v0=20 mm·min-1, S0=15 mm experimental data (T0=1100 ℃) theoretical curve (T0=1100 ℃) experimental data (T0=900 ℃) theoretical curve (T0=900 ℃) Drawing force P(N) The time(s) Drawing force P (N) experimental data (S0=15 mm) theoretical curve (S0=15 mm) experimental data (S0=40 mm) theoretical curve (S0=40 mm) The time (s) b) v0=25 mm·min-1, T0=1100 ℃ Fig. 4 Drawing force for tapered tubes vs time The curves of drawing force at different times were shown in Fig. 4.
Online since: September 2016
Authors: V.M. Salganik, E.B. Pozhidaeva, D.N. Chikishev
Theory, Materials and Methods
Reducing the content of alloying elements leads to a reduction mechanical properties of steel (yield strength limit and tensile strength) by precipitation hardening mechanism, and solid solution hardening.
This method is used to calculate the average size of recrystallized grains based on the data about the initial average grain size, thermomechanical parameters (deformation, strain rate and temperature), as well as various parameters of the investigated material.
Calculations using the model (13) showed that the reduction of the vanadium content in the steel from 0.05 % to 0.02 % reduces Dsppt 20 – 25 MPa - from 105 – 140 to 85 – 120 MPa depending on the cooling rate.
Five options were suggested for changing the chemical composition of steel: 1) reduction of vanadium in half with 0.045 – 0.060 % to 0.020 – 0.035 %; 2) reducing nickel in half with 0.2 – 0.3 % 0.1 – 0.2 %; 3) reduction of copper in half with 0.1 – 0.2 % to 0.0 – 0.1 %; 4) reduction of vanadium quadrupled from 0.045 – 0.060 % to 0.0 –0.015 %; 5) reduction of vanadium (from 0.045 – 0.060 % to 0.0 – 0.015 %) and copper (from 0.1 – 0.2 % to 0.0 – 0.08 %).
To compensate, microalloying elements it developed complex replacing technological influences: - speed increase cooling to 14 – 22 ° C / sec; - reduction accelerated cooling end temperature to 555 ± 15 °C.
This method is used to calculate the average size of recrystallized grains based on the data about the initial average grain size, thermomechanical parameters (deformation, strain rate and temperature), as well as various parameters of the investigated material.
Calculations using the model (13) showed that the reduction of the vanadium content in the steel from 0.05 % to 0.02 % reduces Dsppt 20 – 25 MPa - from 105 – 140 to 85 – 120 MPa depending on the cooling rate.
Five options were suggested for changing the chemical composition of steel: 1) reduction of vanadium in half with 0.045 – 0.060 % to 0.020 – 0.035 %; 2) reducing nickel in half with 0.2 – 0.3 % 0.1 – 0.2 %; 3) reduction of copper in half with 0.1 – 0.2 % to 0.0 – 0.1 %; 4) reduction of vanadium quadrupled from 0.045 – 0.060 % to 0.0 –0.015 %; 5) reduction of vanadium (from 0.045 – 0.060 % to 0.0 – 0.015 %) and copper (from 0.1 – 0.2 % to 0.0 – 0.08 %).
To compensate, microalloying elements it developed complex replacing technological influences: - speed increase cooling to 14 – 22 ° C / sec; - reduction accelerated cooling end temperature to 555 ± 15 °C.
Online since: November 2014
Authors: Ren Hao Liu
Figure 2 Simulation Signal Spectrogram Figure 3 Performance Detection of Singular Point in
Literature Algorithm(Simulation Signal)
Figure 4 Performance Detection of Singular Point in Algorithm in this Text (Simulation Signal)
Figure 5 Detection Probability Comparisons of Two Algorithms
Figure 6 ROSA Algorithm Estimates the Leading Role between Subspace and Real Subspace
Order-1 Subspace Tracing Algorithm under α Stable Distribution Noise Environment
Based on the concept of phase fractional lower order moment, the paper proposes order-1 subspace tracing algorithm (PFLOMROSA), namely order-1 update formula of data covariance matrix in the above-mentioned ROSA algorithm is modified as the following order-1 update formula of phase fractional lower order moment:
(4)
Conduct nonlinear processing on receive data vector x(t), then the modified order-1 update formula of data covariance matrix is:
In other words, first of all, it is conduct nonlinear processing on receive data vector x(t) and order-1 update formula of improved data covariance matrix is: (6) Specific process of improved order-1 subspace tracing algorithm is shown as: 1.
It can know that average evaluated error of ROSA algorithm is significantly increased with the reduction of SNR.
Average evaluated error of PFLOM_ROSA algorithm is also increased with the reduction of SNR.
However, average evaluated errors of SCM_ROSA and IN_ROSA algorithm have no obvious variation with the reduction of SNR.
In other words, first of all, it is conduct nonlinear processing on receive data vector x(t) and order-1 update formula of improved data covariance matrix is: (6) Specific process of improved order-1 subspace tracing algorithm is shown as: 1.
It can know that average evaluated error of ROSA algorithm is significantly increased with the reduction of SNR.
Average evaluated error of PFLOM_ROSA algorithm is also increased with the reduction of SNR.
However, average evaluated errors of SCM_ROSA and IN_ROSA algorithm have no obvious variation with the reduction of SNR.
Online since: October 2006
Authors: P. Pereira Navaza, Jose L. Diéguez, A. Pereira, Enrique Ares
γ = reduction of the plastic in %.
For the accomplishment of the calculation of conditions of starting in EDM machine, we have implanted a computer science application that besides to make these calculations, it serves for the study and compilation to us to data and provide a support to us for the optimal exhibition of results and fast and easy access to a data base with the values of the different ones own parameters of the machine.
The computer science application is a connection between the programming code and a data base constituted initially by the values provided by the manufacturer.
Screen analytical method This computer science application also contributes to a format standardized for registering the results and specifications showing the information necessary for the correct definition of the organized process being according to following sections: client, data of the problem, setting of the generator, cleaning, data for calculations and results as much for the operation of rough-dressing like for finished the one of, as well as corresponding sketches of the electrodes Process of EDM of the artistic profile in 3D After positioned, the mould and the electrode in EDM machine is come to the accomplishment of the later rough-dressing and finished of the two parts that form the mould used for the validation of the methodology and the procedures.
It has really been implanted procedures methods that allow to contribute the necessary data for development of the process of starting of EDM by penetration and that it presented/displayed of a clear and ordered form without use of manual with tables and graphs.
For the accomplishment of the calculation of conditions of starting in EDM machine, we have implanted a computer science application that besides to make these calculations, it serves for the study and compilation to us to data and provide a support to us for the optimal exhibition of results and fast and easy access to a data base with the values of the different ones own parameters of the machine.
The computer science application is a connection between the programming code and a data base constituted initially by the values provided by the manufacturer.
Screen analytical method This computer science application also contributes to a format standardized for registering the results and specifications showing the information necessary for the correct definition of the organized process being according to following sections: client, data of the problem, setting of the generator, cleaning, data for calculations and results as much for the operation of rough-dressing like for finished the one of, as well as corresponding sketches of the electrodes Process of EDM of the artistic profile in 3D After positioned, the mould and the electrode in EDM machine is come to the accomplishment of the later rough-dressing and finished of the two parts that form the mould used for the validation of the methodology and the procedures.
It has really been implanted procedures methods that allow to contribute the necessary data for development of the process of starting of EDM by penetration and that it presented/displayed of a clear and ordered form without use of manual with tables and graphs.
Online since: August 2011
Authors: Hong Wang, Qian Yan, Xin Geng Li, Xue Gang Wang, Xiao Ming Wang, Feng Jie Yan
PCI-1762, a 16-ch relay actuator and 16-ch isolated digital input card for the PCI bus, is responsible for the input and output of digital data, with Adam-3962 as its Terminal Board.
It is employed to input and output analog data, with PCLD-780 as its Terminal Board [5].
Analog data PCI-1762 Relays Buttons and a limit switch Argon gas vehicle Hydraulic motor and solenoid valves Power reset Water tank Digital data IPC Proportional relief valve PCL-812PG Power control panel Voltage Transmitter Current Transmitter Temperature Transmitter Pressure Transmitter Fig. 2.
The procedure adopts average filter, excluding the sampling data which is obviously unreasonable, and will be out of service if the sampling error exceeds alarm value or thermocouple disconnects.
Both integral separation and integral reduction aim the maintenance of the integral action and the reduction of the overshoot, and the equations are showed in Eq.2 and Eq.3
It is employed to input and output analog data, with PCLD-780 as its Terminal Board [5].
Analog data PCI-1762 Relays Buttons and a limit switch Argon gas vehicle Hydraulic motor and solenoid valves Power reset Water tank Digital data IPC Proportional relief valve PCL-812PG Power control panel Voltage Transmitter Current Transmitter Temperature Transmitter Pressure Transmitter Fig. 2.
The procedure adopts average filter, excluding the sampling data which is obviously unreasonable, and will be out of service if the sampling error exceeds alarm value or thermocouple disconnects.
Both integral separation and integral reduction aim the maintenance of the integral action and the reduction of the overshoot, and the equations are showed in Eq.2 and Eq.3
Online since: November 2013
Authors: A. Kiet Tieu, Hong Tao Zhu, Gerry Triani, Bing Jing Lin, Bu Yung Kosasih
In order to convert ∆ and ψ to the thickness of the film, the experimental data obtained from the Ellipsometer were fitted with a theoretical model, which is based on the composition and structure of the surface layers, in Sopra WinElli 4.07 software via a global regression of the functions [Cos (2ψ) & Sin (2ψ) × Cos (∆)] with the Levenberg-Marquardt method of regression.
The largest reduction (27.50) of water contact angle was found on a silicon wafer surface absorbed by copolymer 17R4, while the adsorption of copolymer 17R2 on iron surface caused the smallest decrease (8.90).
The copolymer 17R2 had the least effect on the reduction of the contact angle, followed by 25R2 and 17R4.
However, the difference between copolymer 17R2 and 25R2 was small on the reduction of the contact angle, 1.00 on the silicon wafer surface and 3.40 on the iron surface.
In the whole range of the wavelengths, the curves based on the theoretical model shown in Fig.1 (a) fits well with the experiment data through the regression of the functions [Cos (2ψ) & Sin (2ψ) × Cos (∆)].
The largest reduction (27.50) of water contact angle was found on a silicon wafer surface absorbed by copolymer 17R4, while the adsorption of copolymer 17R2 on iron surface caused the smallest decrease (8.90).
The copolymer 17R2 had the least effect on the reduction of the contact angle, followed by 25R2 and 17R4.
However, the difference between copolymer 17R2 and 25R2 was small on the reduction of the contact angle, 1.00 on the silicon wafer surface and 3.40 on the iron surface.
In the whole range of the wavelengths, the curves based on the theoretical model shown in Fig.1 (a) fits well with the experiment data through the regression of the functions [Cos (2ψ) & Sin (2ψ) × Cos (∆)].
Online since: September 2013
Authors: Nurul Hayati Abdul Halim, Yusoff Noriah, Ahmad Adnan Naufal, Ahmed Jaffar
Findings from the results show that the company has achieved high productivity, minimal space utilization as well as reduction in number of direct manpower.
The reduction of working area through the re-layout activity has helped the operators in increasing their performance and efficiency of the line by focusing more on value added tasks rather than walking and searching for components.
The result shows a notable improvement such as increased productivity, reduction of space utilization as well as number of operators required.
Motwani, Successful implementation of TPS in a manufacturing setting: A case study, Industrial Management and Data Systems. 97 (1997) 274-279
Mohamed, Flow manufacturing – necessity, benefits and implementation: A case study, Industrial Management and Data Systems. 102 (2002) 73-79
The reduction of working area through the re-layout activity has helped the operators in increasing their performance and efficiency of the line by focusing more on value added tasks rather than walking and searching for components.
The result shows a notable improvement such as increased productivity, reduction of space utilization as well as number of operators required.
Motwani, Successful implementation of TPS in a manufacturing setting: A case study, Industrial Management and Data Systems. 97 (1997) 274-279
Mohamed, Flow manufacturing – necessity, benefits and implementation: A case study, Industrial Management and Data Systems. 102 (2002) 73-79