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Online since: May 2011
Authors: Jian Wei Huang
Due to insufficient data on combined weathering and applied stress, the discussions of weathering, creep, and fatigue are kept separate in this document [3].
This paper presents the tensile strength retention of GFRP bars embedded in moist concrete under sustained loads on the basis of reported data.
Durability data from concrete environment could achieve better prediction of GFRP bar in concrete applications [1,2].
Fig. 2 shows the plot for tensile strength retentions of GFRP bar in linear scale vs. log( time), where time is in days, based on the data in Table 1.
As can be seen, R2 for trend lines in Fig.2 are 0.999 and 0.989, respectively, which is greater than a minimum value 0.8 and shows the regression lines fit the test data fairly well.
This paper presents the tensile strength retention of GFRP bars embedded in moist concrete under sustained loads on the basis of reported data.
Durability data from concrete environment could achieve better prediction of GFRP bar in concrete applications [1,2].
Fig. 2 shows the plot for tensile strength retentions of GFRP bar in linear scale vs. log( time), where time is in days, based on the data in Table 1.
As can be seen, R2 for trend lines in Fig.2 are 0.999 and 0.989, respectively, which is greater than a minimum value 0.8 and shows the regression lines fit the test data fairly well.
Online since: April 2021
Authors: Rahmat Hidayat, Vika Marcelina, Fitrilawati Fitrilawati, Norman Syakir, Diyan Unmu Dzujah, Nur Khanifah
Generally, the RGO films are obtained from Graphene Oxide (GO) films which are then treated using thermal reduction or photo reduction process.
Level of reduction by provided irradiation time was examined using SEM/EDS measurement.
At the beginning, attempts to reduce oxygen groups were carried out by chemical reduction using a chemical reducing reagents such as hydrazine, and thermal reduction[16].
The color change effect has also been observed in several studies on GO photo reduction [9,10].
So, the EDS data support the optical characteristics that in the UV oven spraying technique the film deposition and photoreduction taken place simultaneously.
Level of reduction by provided irradiation time was examined using SEM/EDS measurement.
At the beginning, attempts to reduce oxygen groups were carried out by chemical reduction using a chemical reducing reagents such as hydrazine, and thermal reduction[16].
The color change effect has also been observed in several studies on GO photo reduction [9,10].
So, the EDS data support the optical characteristics that in the UV oven spraying technique the film deposition and photoreduction taken place simultaneously.
Online since: December 2013
Authors: Kyoung Woo Kim, Jun Oh Yeon
Analysis of absorption coefficient for eco-friendly acoustical absorbers
Jun oh YEON1, Kyoung woo KIM1, a
1Building Research Department, Korea Institute of Construction Technology, Goyang-Si, Gyeonggi-Do, Republic of Korea
a joyeon@kict.re.kr, b kwmj@kict.re.kr
Keywords: Absorbers, Absorption coefficient, Noise reduction coefficient, Eco friendly
Abstract.
As a result, the NRC (Noise Reduction Coefficient) was found to be 0.85 for glass wool, 0.95 for rock wool, and 0.70 for polyester, 0.65 for waste absorber, 0.75 for PET+ PP fiber absorber, 0.40 for wood wool board, and 0.75 for foamed aluminum absorber.
In this study, we intend to compare the sound absorption performance of currently used absorbers and eco-friendly building absorbers, providing the basic data for eco-friendly building materials.
It is considered the reduction of the absorption coefficient in 500Hz or more was affected by the size and depth of Aperture on the surface of the waste absorber according to the Helmholtz resonator.
As a result, the NRC (Noise Reduction Coefficient) was found to be 0.85 for glass wool, 0.95 for rock wool, and 0.70 for polyester, 0.65 for waste absorber, 0.75 for PET+ PP fiber absorber, 0.40 for wood wool board, and 0.75 for foamed aluminum absorber.
In this study, we intend to compare the sound absorption performance of currently used absorbers and eco-friendly building absorbers, providing the basic data for eco-friendly building materials.
It is considered the reduction of the absorption coefficient in 500Hz or more was affected by the size and depth of Aperture on the surface of the waste absorber according to the Helmholtz resonator.
Online since: May 2012
Authors: Wen Xue Gao, Bing Hui Hou, Peng Fei Xiao, Ning Ning Chen
Slope instability is the most common geological hazard, but from existing data analysis people in this work, put more concentrate in slope stability and long-term safety problems, in the slope engineering after rock excavation caused by unloading rock, Ignore influence of the hydrodynamic load to cut slope stability during blasting excavation construction stage, dynamic load’s influence to cutting slope stability, so there are a lot of cutting slope disasters.
Experience assessment method, mainly starts with the engineering experience and the measured data, through the actual situation of construction to measure and the velocity, acceleration, stress the data, and evaluate stability.
Peak particle vibration velocity judgment is convenient, but different topography and geology condition, blasting vibration propagation law and so on each have differences, so a uniform criteria to judge all the safety of the project is irrelevancy Based on a large number of engineering practices, the enough blasting vibration test site and monitoring data, Reference other similar engineering to evaluate a project peak particle vibration velocity safety standards, which puts very high demand for tester.
Based on the finite element strength reduction of slope stability analysis of the basic principle is that Slope strength parameters Sticky gathered force c and tanφ (φ is internal friction angle) are divided by a reduction coefficient F, get a set of new strength parameter values c and tanφ.
Finite element strength reduction related problems research and engineering application[D].
Experience assessment method, mainly starts with the engineering experience and the measured data, through the actual situation of construction to measure and the velocity, acceleration, stress the data, and evaluate stability.
Peak particle vibration velocity judgment is convenient, but different topography and geology condition, blasting vibration propagation law and so on each have differences, so a uniform criteria to judge all the safety of the project is irrelevancy Based on a large number of engineering practices, the enough blasting vibration test site and monitoring data, Reference other similar engineering to evaluate a project peak particle vibration velocity safety standards, which puts very high demand for tester.
Based on the finite element strength reduction of slope stability analysis of the basic principle is that Slope strength parameters Sticky gathered force c and tanφ (φ is internal friction angle) are divided by a reduction coefficient F, get a set of new strength parameter values c and tanφ.
Finite element strength reduction related problems research and engineering application[D].
Online since: August 2023
Authors: Jessada Wannasin, Tommaso Botter, You Feng He, Davide Schiavon, Simone Paramento, Alessandro Mambretti
This group includes a) cycle time reduction; b) die life extension.
Savings are mostly related to energy consumption, lubricant usage reduction and waste lubricants disposal cost reduction.
The paper has utilized data provided by vacuum evaporator suppliers [6]: recycling percentages of treated solution in a range of 90-95% and specific electrical consumption for a litre of distillate in a range of 145 W/l ± 20% accordingly with the different equipment in the three foundries.
Table 3: LPI input-output per shot The work has been done by utilizing the LCI (Life Cycle Inventory) procedure (ISO 14042), that is involving the data collection and the calculation procedure for the quantification of inputs and outputs of the studied system [7].
Consequently, GISS application contributes to carbon footprint reduction.
Savings are mostly related to energy consumption, lubricant usage reduction and waste lubricants disposal cost reduction.
The paper has utilized data provided by vacuum evaporator suppliers [6]: recycling percentages of treated solution in a range of 90-95% and specific electrical consumption for a litre of distillate in a range of 145 W/l ± 20% accordingly with the different equipment in the three foundries.
Table 3: LPI input-output per shot The work has been done by utilizing the LCI (Life Cycle Inventory) procedure (ISO 14042), that is involving the data collection and the calculation procedure for the quantification of inputs and outputs of the studied system [7].
Consequently, GISS application contributes to carbon footprint reduction.
Online since: June 2017
Authors: Wei Chen, Yu Ting Shang
Timely data recovery and fault exercises with a holistic, multi-level data backup and disaster recovery technology could protect the security of the online system.
Data Backup Strategy Every day the online system stored a lot of production and management information in the database which plays a crucial role on business operations, so the enterprises specially purchased storage device, develop a data backup plan and backup the data by the plan in order to guarantee reliable data storage in the system.
The database uses the full recovery model, so the data of tail-log must be backup before the beginning of the reduction.
Timely data recovery and fault exercises with a holistic, multi-level data backup and disaster recovery technology could protect the security of the online system.
Design and Implementation of financial data importing in the system.
Data Backup Strategy Every day the online system stored a lot of production and management information in the database which plays a crucial role on business operations, so the enterprises specially purchased storage device, develop a data backup plan and backup the data by the plan in order to guarantee reliable data storage in the system.
The database uses the full recovery model, so the data of tail-log must be backup before the beginning of the reduction.
Timely data recovery and fault exercises with a holistic, multi-level data backup and disaster recovery technology could protect the security of the online system.
Design and Implementation of financial data importing in the system.
Online since: August 2013
Authors: Ai Guo Wang, Chen Cheng Hu, Qin Li
With use of linear regression analysis and comparative study, the retained farmlands of Jiaozuo City in 2015 and 2020 are predicted and contrasted to the data from 2015—2020 General Planning of Jiaozuo city’s land use, from which we know that the farmland protection task of Jiaozuo city is arduous.
In connection with the reasons for the farmland reduction, some measures and suggestions to protect farmland are put forward.
The farmland area in 2015 and 2020 were 158.00 thousands hectares and 154.73 thousands hectares.The data from 2006—2020 General Planning of Jiaozuo city’s land use is all 192.74 thousands hectares.
The areas of prediction in 2015 and 2020 comparing to the data from 2006—2020 General Planning of Jiaozuo city’s land use are respectively small 34.74 thousands hectares and 33.80 thousands hectares.
In connection with the situation for the farmland reduction, some measures and suggestions to protect farmland are put forward.
In connection with the reasons for the farmland reduction, some measures and suggestions to protect farmland are put forward.
The farmland area in 2015 and 2020 were 158.00 thousands hectares and 154.73 thousands hectares.The data from 2006—2020 General Planning of Jiaozuo city’s land use is all 192.74 thousands hectares.
The areas of prediction in 2015 and 2020 comparing to the data from 2006—2020 General Planning of Jiaozuo city’s land use are respectively small 34.74 thousands hectares and 33.80 thousands hectares.
In connection with the situation for the farmland reduction, some measures and suggestions to protect farmland are put forward.
Online since: October 2014
Authors: Min Qiang Xu, Si Yang Zhang, Zi Qian Cui, Ri Xin Wang, Yong Bo Li
The typical noise reduction method include classical discrete wavelet [1] has the fine effect to the stable data but has great deviation to the discrete data.
The sample data can be divided into two parts and keeps the same data as the primary.
Then extract the data to change two lines of data and form odd and even samples
For adapting un-sampled lifting schemes, data reducing was avoided and the data information was kept completely.
The fault data was analyzed with ORSGWT.
The sample data can be divided into two parts and keeps the same data as the primary.
Then extract the data to change two lines of data and form odd and even samples
For adapting un-sampled lifting schemes, data reducing was avoided and the data information was kept completely.
The fault data was analyzed with ORSGWT.
Online since: April 2014
Authors: Tomás Vlasák, Jan Hakl, Pavel Novák, Jiří Sochor, Jan Čech
The results of our tests were first compared with the data in literature.
Thus we can state that the studied heat No. 278 719 shows a creep resistance fully comparable with literary data.
The differences between the results of PC and PF technologies are not obvious and therefore we will assess them as the only set of data.
[3] Hald, J.: ECCC data sheet.
[4] ECCC Recommendation 2001: Creep data validation and assessment procedures, UK, 2001
Thus we can state that the studied heat No. 278 719 shows a creep resistance fully comparable with literary data.
The differences between the results of PC and PF technologies are not obvious and therefore we will assess them as the only set of data.
[3] Hald, J.: ECCC data sheet.
[4] ECCC Recommendation 2001: Creep data validation and assessment procedures, UK, 2001
Online since: October 2014
Authors: Yu Yun Fu, Jian Lei Zhou
The Study on Water Conservation in Thermal Power Plants
Jianlei Zhou 1, a , Yuyun Fu1, b
1Baoding Technical College of Electric Power, Baoding, Hebei, 071051, China
agary99012003@163.com, bbddyfuyy@126.com
Keywords: Thermal Power Plant, Water Conservation, Emission Reduction, Consumption Reduction
Abstract: As the main working fluid pair to transfer energy and cool down the equipment, water is used in a large amount in thermal power plants.
The power plants should follow the direction of “energy saving, water saving and emission reduction” to achieve zero wastewater emission and contribute to the development of circular economy.
Reference: [1] Dawei Zhang, The Current Situation and Analysis of Industrial Water-saving and Emission Reduction Technology [J].
[2] Lin Zhang, The Analysis and Reform of Water-saving and Emission Reduction Technology in Thermal Power Plant[J].
The Ways and Potential Analysis of Chemical Water Conservation and Emission Reduction in Yangcheng Power Plant [J].Inner Mongolia Technology & Economy, 2011,24: 132-136
The power plants should follow the direction of “energy saving, water saving and emission reduction” to achieve zero wastewater emission and contribute to the development of circular economy.
Reference: [1] Dawei Zhang, The Current Situation and Analysis of Industrial Water-saving and Emission Reduction Technology [J].
[2] Lin Zhang, The Analysis and Reform of Water-saving and Emission Reduction Technology in Thermal Power Plant[J].
The Ways and Potential Analysis of Chemical Water Conservation and Emission Reduction in Yangcheng Power Plant [J].Inner Mongolia Technology & Economy, 2011,24: 132-136