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Online since: June 2010
Authors: Jitka Mohelníková, Hasim Altan
The spectral transmittance measurements were used as input data for daylight comparative studies, and the consideration of convenience of selected solar control glasses and foils for windows are summarised on the basis of analysis of optical properties.
The glazed parts of building facades and roofs should satisfy requirements for solar gains for the reduction of energy consumption in buildings, and daylighting for living and working indoor environments [1-3].
Values of visible transmittance τv and reflectance ρv calculated from spectral data (visible spectral range between 380 and 780 nm) were determined in accordance with equations (4) and (5).
This means that the solar control glass protects against glare but it has influence on a high reduction of interior illuminance.
The spectral measurements of optical properties provided the data necessary for evaluation of influence of these solar control transparent materials on daylighting in buildings.
Online since: August 2013
Authors: Zhi Qiang Gao, Wen Jie Ding, Jing Xu
Physical properties data of potato starch processing wastewater are very few in the cryogenic vacuum equipment design.
Acquired data and physical properties formula provided a convenient condition for cryogenic vacuum equipment design.
Collect the basic data The wastewater’s composition of potato starch processing.
Through the data fitting, can get graphics to express the influence among three parameters, shown in fig. 1.
Can get the processing starch wastewater physical property data only to enter the temperature and concentration, or through compare the physical property figure, can obtain the physical property data.
Online since: August 2014
Authors: He Gong, Shi Jun Li, Zi Yu Wu, Man Hua Yu
The data and information in the system are transfered using wireless transmission technology.
The data information of carpooling for them is imported by a summary keyboard.
Considering the actual application, this part of the circuit just need to send the data to the electronic screen, so the data reception pins of MCU don`t be used.
Display subroutine scans to turn out the dot matrix data by line, which has set stored by group, and then lighting LED line-by-line.
Afterwards, data sent out to the second column, the third column and so on.
Online since: May 2016
Authors: In Soo Kim, Dong Nyung Lee, Su Kwon Nam
The average plastic strain ratio (the -value) and the anisotropy parameter ½ΔR½calculated from the measured texture of AA1050 Al alloy sheet treated by the heavy asymmetric rolling by 84% reduction in thickness and subsequent annealing for 1 h at 500 °C, followed by light rolling by 10% or 20% reduction in thickness and the subsequent annealing for 1 h at 500 °C increased by 1.52 times that of the non-processed specimen and reduced to 1/12 times that of the non-processed specimen, respectively.
The starting Al alloy sheets were asymmetrically rolled by about 84% reduction in thickness in 5 passes (reduction path: 2.92→1.74→1.05→0.69→0.53→0.46 mm) and annealed for 1 h in a salt bath at 500˚C.
The asymmetrically rolled and annealed Al alloy sheets were symmetrically rolled by 10 and 20% reductions in thickness in 1 and 2 passes, respectively.
The complete pole figures and orientation distribution functions (ODFs) of the upper, center and lower planes of the Al alloy sheets were calculated using the measured pole figure data [28, 29].
The R-value, -value, and ½ΔR½ were calculated by orthorhombic symmetry from the pole figure and ODF data using Bunge method [28, 29].
Online since: April 2025
Authors: Zain Ali, Hafsa Bibi, Areej Ahmed
The primary recommendations discussed are: the encouragement of material re-used, the improvement of training activities, and the overall regulation of waste generation data collection.
Data identified that C&D wastes increased by 39% in the US starting from 2007 to the remaining year of 2010.
Mean Wastage (%) of Different Countries Material USA China UK Korea Pakistan Concrete 7.5 2.5 2.5 1.5 4.3 Bricks 3.5 2.0 4.5 3.0 6.8 Woods 16.5 NA 6.0 NA 6.4 Rebar 5.0 5.0 NA NA 4.7 Mortar 3.5 5.0 NA 0.3 6.6 (Self made using data from different sources and studies) The data of the research papers have been presented in Table 1 in order to compare the amount of construction waste produced by the different countries which were over-viewed for this purpose.
Factors and causes of waste Generation in Pakistan (Self made using data from different sources and studies) Conclusion Lack of proper disposal of construction waste in Pakistan is an emerging problem that requires attention.
Chen and Minhas Asim, "Data-Driven Predictive Analysis and Sustainable Management of Concrete Waste in Pakistan," 2024
Online since: April 2009
Authors: Yong Hui Song, Xin Zhe Lan, Yong Yang, Wen Wen Gao
XRD analysis confirmed that the reduction product was element silver.
Generally, silver nanoparticles can be prepared by physical and chemical methods; the chemical approach, such as chemical reduction, electrochemical techniques, and photochemical reduction is most widely used [4, 5].
Herein, the present paper investigates the effects of the anionic surfactant sodium dodecyl benzene sulfonate (SDBS) and water-soluble macromolecules PVP for synthesis silver nanoplate by chemical reduction method. 2.
The min. value of surface tension was of 33.12mN/m with the CMC of 0.8g/L in the SDBS solution system, while the min. surface tension was of 60.91mN/m with the CMC of 0.1g/L in the PVP solution system. 0.0 0.5 1.0 1.5 2.0 30 40 50 60 70 0.0 0.5 1.0 1.5 2.0 30 40 50 60 70 SDBS SFT(mN/m) C (g/L) PVP Fig.1 Surface tension of SDBS or PVP single aqueous solutions The reduction of hydrazine hydrate in SDBS or PVP solution, which concentration was greater than their CMC, the as received dispersed particles SEM results are shown in Fig.2, combining with Fig. 1, one can find that the anionic surfactant SDBS significantly reduced the surface tension of the solution due to the interaction of its hydrophilic group (-NaSO3) and hydrophobic group (-C18H29) with the aqueous solution, especially the self-assembled micelles helped to direct the growth of nanoparticles to form plate structure.
The calculated cell parameter was 4.086 Å, which is consistent with the reported data (JCPDS File no. 4-0783).
Online since: May 2012
Authors: Vladimir I. Babitsky, Anish Roy, Agostino Maurotto, Vadim V. Silberschmidt
A reduction of 70-75% was measured for the tangential component (main cutting force) with a 71-88% force reduction in the radial component.
For the surface analyses a non-contact Zygo 3D scanning interferometer (model NV5000-5010) was used, and the obtained data was post-processed with the Taylor-Hobson Talymap Platinum 3D surface analysis software.
This data is also confirmed by the values of Rsk and Rku, showing a surface with more valleys and thinner peaks.
Each experiment was repeated at least 3 times in order to obtain statistically significant experimental data.
The radial component showed also a reduction of 60-80% while machining in the UAT mode.
Online since: May 2012
Authors: Dian Ru Wang, Dong Heng Hao, Guo Zhu Li
It will take the accountability system for energy saving and emission reduction .
In the actual process of calculating carbon emissions, if energy consumption data are represented by standard coal, without subdivision into coal, oil and natural gas information, we can calculate carbon emissions coefficient according to the following formula[1]
This study use the average of the findings of each agencies, as shown in Table 1: Table1 The carbon emissions coefficient of different energy Data Source Coal Oil Gas Hydroelectric and nuclear power DOE/EIA 0.702 0.478 0.389 0 The Institute of Energy Economics in Japan 0.756 0.586 0.449 0 climate change project in State Science and Technology Commission 0.726 0.583 0.409 0 Energy Research Institute in National Development And Reform Commission 0.7476 0.5825 0.4435 0 Mean Value 0.7329 0.5574 0.4226 0 According to the carbon emissions coefficient of different energy, we will get 0.608 as carbon emissions coefficient of standard coal.
That means energy-saving and emission-reduction in Hebei province has achieved a great progress during the "Eleventh Five-Year" period.
In order to realize the target of energy saving and emission reduction, the State has introduced a series of measures such as Regional Restricted Approval.
Online since: August 2020
Authors: Mohammed Y. Fattah, Maysa Salem Al-Qaisi, Maki J. Mohammed Al-Waily
The following equation was obtained by carrying out statistical analysis using the SPSS (Statistical Package for the Social Sciences) program form the present experimental work and previous studies data.
Settlement reduction ratio Sr models.
Summary of statistical models of settlement reduction ratio Sr.
Error of the Estimate 1 0.942 0.887 0.855 0.07 2 0.977 0.954 0.942 0.108 3 0.940 0.883 0.866 0.067 Appropriate Models Stress Concentration Ratio n When the data fitted are very well, then the explanatory power of the model is measured by the coefficient of multiple determination R2=0.990 (adj.
Conclusions The experimental work and statistical analysis of data revealed the following conclusions: · Stress concentration ratio, which is known as the ratio between the applied stresses on the stone column to the applied stress on the soil surrounding the column, or (n =sc/ss)
Online since: October 2014
Authors: Mihai Nagi, Alexandru Rus, Vlad Martian
Heat exchanger tank height reduction could bring benefits like overall size reduction or increased heat transfer area within the same overall dimensions, if the reduction does not have a negative influence on the cooler's pressure drop.
The comparison is illustrated in Fig. 4.Once the solution's independence from the mesh is obtained and satisfactory agreement is found between numerical and experimental data, we proceed to alter the water inlet and outlet tanks height.
Fig. 4 Comparison between experimental and numerical data As we can observe from Fig. 4, the numerical model under predicts the pressure drop resulted from the experimental investigation.
Fig. 5 presents the pressure drop variation with the tank height reduction for each simulated water flow.
Analysis of the results reveals that there is no notable change in the pressure drop curve with the reduction of the water inlet and outlet tank height.
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