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Online since: August 2018
Authors: Kyoung Woo Kim, Jin Yun Chung, Hye Kyung Shin, Jong-Young Park
This study investigated the characteristics of reduction in vibration and floor impact sound in apartments where the bubble deck slab was applied.
The two slabs showed a nearly similar pattern of reduction characteristics with regard to heavyweight impact sound.
The bubble deck slab showed a better vibration reduction at the low frequency domains than that of the solid slab as the vibration level was lower at 80Hz or lower.
The comparison and measurement results were based on the limited measured data.
Thus, performance improvements are needed in the future through the use of more data and correlation analysis.
Online since: January 2012
Authors: Gui Yun Wang, Shou De Wang, Ling Chao Lu
Results show that with the increasing of shell content, the compressive strength decreases, however, modest reduction; as the increase of CaCO3 content, the strength first increases and then decreases, the compressive strength reaches the highest value when the content is 15%.
As shown in Table 2, with the increasing of shell content, the compressive strength decreased, however, modest reduction.
However, when the shell was added into the cement, the content of Ca(OH)2 was not increased, this was consistent with the hydration heat and the data in Table 2.
Mehta who is from University of California divided pore diameter of hardened cement paste into 4 grades [6], the data is shown in Table 5.
With the increasing of shell content, the compressive strength decreases, however, modest reduction; as the increase of CaCO3 content, the strength first increases and then decreases, the compressive strength reaches highest when the content is 15%. 2.
Online since: October 2014
Authors: Guo Qiang Liu, Jiu Peng Zhang, Peng Zhi Wang
And the reduction amplitude of noise increases with vehicular acceleration.
And the exposed-aggregate cement concrete plate is casted in rutting plate mold (30cm×30cm×5cm), then testing the BPN and TD and recording the data.
It is more persuasive to apply parallel tests for each speed and collect 3~4 sets of data.
And the reduction amplitude of noise increases with vehicular acceleration.
And the reduction amplitude of noise increases with vehicular acceleration.
Online since: October 2015
Authors: Saeed Farahany, Tuty Asma Abu Bakar, Nur Azmah Nordin, Esah Hamzah
However, data on the use of rare earth elements, especially in Al-Mg2Si in-situ composite, are still rather limited.
The temperature-time data were recorded using a high-speed data acquisition system (EPAD-TH8-K) linked to a computer with DEWESoft 7.05 at a dynamic rate of 100 Hz/ch, as shown in Fig. 1.
FlexPro9.0.31 data analysis software was used for smoothing the curves and plotting the cooling curve and first derivative curve for extracting the characteristic data.
In order to analyse the cooling behaviour of the in-situ composite, each curve is projected into first and second derivative curves in order to extract the characteristic data clearly, including nucleation temperature TN, minimum temperature Tmin, and growth temperature TG.
Further understanding of data obtained from the cooling curves has been discussed in previous studies [15, 16].
Online since: October 2011
Authors: Qiang Zhang, Peng Yong
According to the data of geological prospecting, the earth in Xixiang mainly consists of four substances: plain fill (Q42ml) ,silty clay (Q4lal) ,coarse sand (Q4lal) ,and gravel (Q4lal) .The geological condition is rather stable.
Application of ground source heat pump system to actual cases for energy saving and emission reduction The residential district is located in Hanbai Road, Xixiang County.
(T2 refers to the temperature of hot water; T1 refers to the temperature of tap water. 4.3The analysis of the design for heat pump air-conditioning According to the data of geological exploration and hydrological research, as well as the figures obtained from the wells under experiment, a well with a diameter of 325mm and a depth of 180m can yield 70m³ water per hour.
Besides, the reduction of CO2 emission will reach 365.32 tons, SO2 emission, 8.99 tons, soot emissions, 5.24 tons, NOX emission, 8.51 tons.
With people's increasing understanding of the central government's energy saving and emission reduction policies, energy-saving and environment-friendly building is gradually becoming the preferred choice for house buyers.
Online since: July 2013
Authors: Petr Kubík, Jindřich Petruška, Jiří Hůlka, František Šebek
Introduction Chevron fracture is a typical material damage occurring during forward extrusion of long products, especially after more consecutive reductions.
Process parameters such as die cone angle, area reduction ratio and friction have significant effect on the probability of chevron crack occurrence.
Insertion of these data into the equations defining the fracture criteria, unknown parameters of the fracture criteria can be evaluated.
Totally six reductions were simulated using an axisymmetrical model of extruded material (Fig.3) with the six rigid extrusion dies in a single sequence.
We can see there is no fracture in the fifth reduction, but all the specimens have typical chevron cracks after the sixth reduction.
Online since: January 2013
Authors: Bao Hui Wang, Dan Dan Yuan, Hong Jun Wu, Hai Xia Sheng, Xin Sui
After the treatment, the viscosity reduction of the water phase in the layer was reached to 50% after oxidation demulsification with ClO2.
By demonstrating the experimental data and discussion, we can effectively control the oxidation performance of chlorine dioxide, which is very meaningful for oilfield on the aspect of stable production of petroleum.
After the treatment, the viscosity reduction of the water phase in the layer was reached to 50% after oxidative degradation of polymer with ClO2
Online since: February 2014
Authors: Ji Hye Choi, Yoon Sun Lee, Hyun Suk Jang, Jeong Seok Lee, Jae Jun Kim
The certified carbon labeling product data is publicly announced by the Korea Environmental Industry & Technology Institute (KEITI) (http://www.edp.or.kr/).
Labels which require contractual reductions in GHG emissions may have greater impacts in the short term.
Carbon labelling of grocery products: public perceptions and potential emissions reductions.
Greenhouse gas footprinting for small businesses-The use of input-output data.
Carbon reduction in a high-density city: A case study of Langham Place Hotel Mongkok Hong Kong.
Online since: August 2019
Authors: Gennaro Maddaloni, Marco di Ludovico, Marta Del Zoppo, Alberto Balsamo, Andrea Prota
Collected Experimental Data In the following, the experimental data collected from 83 diagonal compression tests (Fig. 2a) on tuff masonry panels carried out at University of Naples Federico II are analyzed.
The collected data consist of 18 tests on unreinforced masonry (URM) panels and 65 tests on strengthened panels, out of which 10 with RP, 22 with CRM and 33 with FRCM systems.
Diagonal compression tests (a) and strengthening configurations for collected data (b).
Collected data.
Then, the effectiveness of such systems is investigated based on the experimental data collected from 83 diagonal compression tests carried out at University of Naples Federico II.
Online since: December 2012
Authors: Shan Zhao, Nai Qian Zhang, Dong Li
Optimized interpolation procedures for the PGFs can be applied, resulting in a considerable reduction of matrix-filling time without any significant effect on the accuracy.
We compare the results obtained using our approach with the results obtained using the time-domain finite element method and the measured data.
A linear interpolation method was designed for the fast and accurate interpolation of 3-D PGF, resulting in a considerable reduction of matrix-filling time.
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