Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: July 2018
Authors: Boonyanit Thaweboon, Sroisiri Thaweboon
Results: Jasmine mouthwash showed a significant inhibitory effect on S. mutans biofilm formation by decreasing 43% of biofilm whereas that of chlorhexidine showed 71% reduction.
Data were considered statistically significant at p-value < 0.05.
Even though its biofilm reducing effect was not as potent as 0.2% chlorhexidine gluconate mouthwash which has been considered as a gold standard anti-biofilm agent, nearly 43% reduction of S. mutans biofilm was demonstrated compared with the 71% reduction effect of chlorhexidine.
Data were considered statistically significant at p-value < 0.05.
Even though its biofilm reducing effect was not as potent as 0.2% chlorhexidine gluconate mouthwash which has been considered as a gold standard anti-biofilm agent, nearly 43% reduction of S. mutans biofilm was demonstrated compared with the 71% reduction effect of chlorhexidine.
Online since: May 2011
Authors: Van Duong Luong, Hong Ro Lee, Wen Tao Zhang
For removing impurities to improve luminescence properties, Eu2+- activated Sr2Si5N8 red phosphor for white light-emitting diodes (LEDs) was prepared by multiple heat-treatment synthesis which includes carbothermal reduction and nitridation.
In order to improve the synthesis process, some authors have reported a carbothermal reduction and nitridation (CRN) method to prepare these kinds of phosphors [6, 15].
The data were recorded in the 2θ range from 10 to 70° with a scanning rate of 3°/min.
Conclusion Sr2Si5N8:Eu2+ red-emitting phosphors were synthesized successfully by multiple heat-treatment syntheses which include carbothermal reduction and nitridation.
In order to improve the synthesis process, some authors have reported a carbothermal reduction and nitridation (CRN) method to prepare these kinds of phosphors [6, 15].
The data were recorded in the 2θ range from 10 to 70° with a scanning rate of 3°/min.
Conclusion Sr2Si5N8:Eu2+ red-emitting phosphors were synthesized successfully by multiple heat-treatment syntheses which include carbothermal reduction and nitridation.
Online since: January 2005
Authors: Beong Bok Hwang, Joong Yeon Lim, Kyung Hoon Min, Hyoung Jin Choi, B.S. Ham
Process conditions such as reduction in area, semi die angle
and upsetting ratio are carefully considered to prevent from internal or geometrical defects.
However, conventional methods depending on experiences are not sufficient, considering that conversion into small-lot-large-variety products, reduction of lead time and costs are demanded [1].
The manufacture of precision and complex shapes needs a great amount of trial-and-error to determine the perform dimensions, the maximum number of forming operations, the type of each operation such as extrusion and upsetting, the amount of area reduction in each pass and the die geometries [2].
The friction value of the lubricant used in the experiments was determined to be 0.1 from the curve fitting by FEM to the experimental data with an iteration scheme.
However, conventional methods depending on experiences are not sufficient, considering that conversion into small-lot-large-variety products, reduction of lead time and costs are demanded [1].
The manufacture of precision and complex shapes needs a great amount of trial-and-error to determine the perform dimensions, the maximum number of forming operations, the type of each operation such as extrusion and upsetting, the amount of area reduction in each pass and the die geometries [2].
The friction value of the lubricant used in the experiments was determined to be 0.1 from the curve fitting by FEM to the experimental data with an iteration scheme.
Online since: March 2011
Authors: Robert J. McMurray, Alan G. Leacock, Desmond Brown
The predicted results correlate well with the experimental data, which had initially demonstrated the asymmetric springback
Introduction
To ensure full traceability in aircraft production, metal sheet is generally labelled on one side by the manufacturer of the sheet.
Using a best fit to the experimental data, functions were found for the Alclad sheet of; σalclad=301.89+661.39ε-εy0.556 Equation 3 σcladding=35+170.37ε-εy0.263 Equation 4 σcore=334.69+731.03ε-εy0.569 Equation 5 where in this case, εy has not been explicitly stated: for now it will remain equal to the yield stress divided by the elastic modulus.
Assuming that the entire alloy core only sees uniform elastic deformation, it will see a reduction of 468MPa during recovery.
If both the reduction in tensile strain and the final radius were known, the strain distribution through the sheet thickness can again be given as; εi'=yRs+εs' Equation 8 Where εi' and εs' are simply the strains after elastic recovery.
The magnitude of the normal springback matches the experimental trend very well, and the reduction in springback with increasing strain shows a good correlation.
Using a best fit to the experimental data, functions were found for the Alclad sheet of; σalclad=301.89+661.39ε-εy0.556 Equation 3 σcladding=35+170.37ε-εy0.263 Equation 4 σcore=334.69+731.03ε-εy0.569 Equation 5 where in this case, εy has not been explicitly stated: for now it will remain equal to the yield stress divided by the elastic modulus.
Assuming that the entire alloy core only sees uniform elastic deformation, it will see a reduction of 468MPa during recovery.
If both the reduction in tensile strain and the final radius were known, the strain distribution through the sheet thickness can again be given as; εi'=yRs+εs' Equation 8 Where εi' and εs' are simply the strains after elastic recovery.
The magnitude of the normal springback matches the experimental trend very well, and the reduction in springback with increasing strain shows a good correlation.
Online since: June 2014
Authors: Daniel Constantin Comeagă, Constantin Udrea, Cristian Necula, Octavian Donţu
The system is improved by adding 1 degree of freedom at the orientation unit, reduction of noise and new software version.
The system is improved by adding 1 degree of freedom at the orientation unit, reduction of noise and new software version.
The PULSE software is controlling a data acquisition unit specialized in acquiring signals from the intensity probes.
The control panel of the virtual instrument for communicating with FESTO controllers is presented in Fig. 4 and is split in 3 area: - programming the communication parameters ( baud rate, number of data bits, parity, stop bits, flow control, XON/XOFF characters, etc.) and VISA names for the three axes; - programming the movements (positions, speed), buttons for executing the next command; button for execution of the actual positioning command, button for emergency stop; - input of different command, buttons for stop of the command in use; - indicators for the messages send by the microcontrollers.
The system allows control of external motor controllers, a DSP board and also a specialized acoustic data acquisition unit.
The system is improved by adding 1 degree of freedom at the orientation unit, reduction of noise and new software version.
The PULSE software is controlling a data acquisition unit specialized in acquiring signals from the intensity probes.
The control panel of the virtual instrument for communicating with FESTO controllers is presented in Fig. 4 and is split in 3 area: - programming the communication parameters ( baud rate, number of data bits, parity, stop bits, flow control, XON/XOFF characters, etc.) and VISA names for the three axes; - programming the movements (positions, speed), buttons for executing the next command; button for execution of the actual positioning command, button for emergency stop; - input of different command, buttons for stop of the command in use; - indicators for the messages send by the microcontrollers.
The system allows control of external motor controllers, a DSP board and also a specialized acoustic data acquisition unit.
Online since: July 2013
Authors: Noorsidi Aizuddin Mat Noor
The cost figures may be implemented to justify higher investments, for examples, in the quality or flexibility of building solutions through a long-term cost reduction.
The production of floor coverings has a significant impact on the common environment in all stages of the product’s life cycle, and research has shown that there is considerable scope for the reduction of such impacts.
Methods The research methodology followed by a traditional approach of data collection, analysis, pilot survey and review.
Historical cost and building quality data were collected from two selected buildings on public high rise building housing in Johor Bahru, and about 2862 randomly resident received the survey questionnaire to support this study (refer Table 1).
(ICC) j = the one time initial construction cost in year j (ACC) k = the one time additional construction cost in year k t = the year of cost is incurred n = the actual service life or period of economic interest EFMt = the economic model operation and maintenance factor for the year t (M) t = the sum of maintenance and repair costs occurring at year t (R) t = the sum of rehabilitation costs occurring at year t (U) t = the annual building service costs occurring at year t (CEPers) t = the annual construction engineering personnel costs occurring at year t (PILT) t = the annual payments in lieu of taxes occurring at year t Presenting cost data in constant year Malaysian Ringgit allows for the comparison of expenditures over a specified period.
The production of floor coverings has a significant impact on the common environment in all stages of the product’s life cycle, and research has shown that there is considerable scope for the reduction of such impacts.
Methods The research methodology followed by a traditional approach of data collection, analysis, pilot survey and review.
Historical cost and building quality data were collected from two selected buildings on public high rise building housing in Johor Bahru, and about 2862 randomly resident received the survey questionnaire to support this study (refer Table 1).
(ICC) j = the one time initial construction cost in year j (ACC) k = the one time additional construction cost in year k t = the year of cost is incurred n = the actual service life or period of economic interest EFMt = the economic model operation and maintenance factor for the year t (M) t = the sum of maintenance and repair costs occurring at year t (R) t = the sum of rehabilitation costs occurring at year t (U) t = the annual building service costs occurring at year t (CEPers) t = the annual construction engineering personnel costs occurring at year t (PILT) t = the annual payments in lieu of taxes occurring at year t Presenting cost data in constant year Malaysian Ringgit allows for the comparison of expenditures over a specified period.
Online since: May 2012
Authors: Zhong Shu Wei, Xu Nan Ning
In this study, we combined pilot test data and relative information to introduce the application of T.D. bacteria in biogas desulfurization area, and analyzed some of the key parameters of the process.
Data Analysis During startup, since the activity of the bacteria is weak, in order to control the reaction parameters and keep the suitable living condition of the bacteria, less aeration startup method is applied.
Table 1.Data during system startup From table 1, it is clear that: a.
From the data in above, it can be seen: after one week, the start up of the system is finished.
Data indicated that in thiopaq system, absorbent conductivity should be maintained at 40 ~ 60mS/cm.
Data Analysis During startup, since the activity of the bacteria is weak, in order to control the reaction parameters and keep the suitable living condition of the bacteria, less aeration startup method is applied.
Table 1.Data during system startup From table 1, it is clear that: a.
From the data in above, it can be seen: after one week, the start up of the system is finished.
Data indicated that in thiopaq system, absorbent conductivity should be maintained at 40 ~ 60mS/cm.
Online since: September 2017
Authors: Irina V. Zlobina, N.V. Bekrenev, G.K. Muldasheva
Thus, a 24% decrease in pore size and reduction in their dispersion by almost 30% is noticed.
Then we examined the flexural strength of the samples, which was evaluated by the sample fracture strength determined on a special strain gauge setup with computer data processing .On the basis of the results obtained by calculations we determined the limit of bending stress.
Experimental Results and Discussion On the basis of mathematical processing of the experimental data [22] for samples with electromagnetic processing after the formation without impregnation approximating function was derived: , where F is the external force, resulting in the destruction of the sample, H; Рsp is summed up intensity of the electromagnetic field, W/cm3; τ is influence time, s.
The mentioned above confirms offered by us mechanism, according to which the increase in the uniformity of the structure and reduction in pore size after electrophysical processing increases the number of connections between the agglomerates of structure and increase in the limit bending stresses.
Thus, a 24% decrease in pore size and reduction in their dispersion by almost 30% is noticed.
Then we examined the flexural strength of the samples, which was evaluated by the sample fracture strength determined on a special strain gauge setup with computer data processing .On the basis of the results obtained by calculations we determined the limit of bending stress.
Experimental Results and Discussion On the basis of mathematical processing of the experimental data [22] for samples with electromagnetic processing after the formation without impregnation approximating function was derived: , where F is the external force, resulting in the destruction of the sample, H; Рsp is summed up intensity of the electromagnetic field, W/cm3; τ is influence time, s.
The mentioned above confirms offered by us mechanism, according to which the increase in the uniformity of the structure and reduction in pore size after electrophysical processing increases the number of connections between the agglomerates of structure and increase in the limit bending stresses.
Thus, a 24% decrease in pore size and reduction in their dispersion by almost 30% is noticed.
Online since: April 2020
Authors: Ali Hosseinzadeh, Dhyai Hassan Jawad, Mustafa Misirli, Guney Guven Yapici
However, the elongation under shear manifested a reduction when the number of ARB passes increased.
Slabs were preheated at 350oC for 5 minutes before each pass of the rolling, and it was rolled with a thickness reduction of 50% per cycle[6].
A reduction in individual layer thickness was detected with increasing the number of ARB passes.
The slope of the fitted line between the tensile data and shear data indicated the correlation coefficient (m) and was found to be about 1.1339.
Slabs were preheated at 350oC for 5 minutes before each pass of the rolling, and it was rolled with a thickness reduction of 50% per cycle[6].
A reduction in individual layer thickness was detected with increasing the number of ARB passes.
The slope of the fitted line between the tensile data and shear data indicated the correlation coefficient (m) and was found to be about 1.1339.
Online since: June 2010
Authors: Dian Bo Yang
The environmental impacts are
illustrated with many examples and concrete data.
From an industrial perspective, soil pollution can lead to various effects, such as reduction in the soil fertility, significantly reducing the crop production, imbalance in the plant and animal species and deposition of silt in the underwater deposits.
Both fires accidents reduction and mitigation of environmental damage during fire operation need more effort.
From an industrial perspective, soil pollution can lead to various effects, such as reduction in the soil fertility, significantly reducing the crop production, imbalance in the plant and animal species and deposition of silt in the underwater deposits.
Both fires accidents reduction and mitigation of environmental damage during fire operation need more effort.