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Online since: August 2017
Authors: Hyun Bum Park
Since it has mainly been applied focusing on civil engineering structure, however, research data on mechanical area structure is very limited.
In addition, objective data on the superiority and economic value of technology can be obtained through independent LCA analytical technology.
In the case of Intercity Bus in Canada, it presented 4.5% and 10% cost reduction effects respectively for 9% vehicle frame weight reduction and 20% weight reduction for fuel costs in operating costs as a result of vehicle frame weight reduction using composite from 9% up to 20%.
As for ecological cost savings costs according to respective weight reduction rates, they were found to be 9.8 million won (9% weight reduction), 21.8 million won (20% weight reduction), 15 million won (14% weight reduction) and 18 million won (16.5% weight reduction) during 9 years.
This study considered transportation vehicle frame of composite structure being produced domestically, and it presented basic data on partial cost research method on LCA from the initial production to operation and disposal of mechanical and aircraft structure applied with composite.
Online since: February 2014
Authors: Zsuzsa Szalay, Péter Medgyasszay
Element Material Additional materials Comment Wall expanded polystyrene (EPS) with graphite glue, fixing, glass fibre net, thin plastering the environmental data of EPS were used Wall reed plate fixing, 2 cm cement plaster the environmental data of straw were used Wall straw bale wooden frame, fixing, 3 cm adobe plaster, iron net, 0.5 cm lime plaster Attic slab cellulose blown-in wooden frame, 9 mm OSB on top Attic slab mineral wool (step-resistant) vapour barrier foil, 9 mm OSB on top Attic slab rigid polyurethane (PUR) 12 mm OSB on top Calculation of the energy demand.
The investment cost of additional insulation and supplementary materials, including the price of material and labour, were taken from cost databases [6], manufacturer data and quotes.
High-quality environmental data from the Swiss ecoinvent 2.0 database was used, with certain modifications to account for the Hungarian circumstances where necessary [7].
Hence the insulation of the slab is always more efficient than the insulation of the walls: with the same amount of material we can achieve a higher energy reduction or the same energy reduction can be achieved with less building material.
Zorkóczy, Building ecological and building biological evaluation system for building constructions based on national data.
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.
Online since: December 2012
Authors: Lei Wang, Ming Hua Jin, Hua Min Liu
Radial forging of tubes without mandrel and hollow-axle has been simulated and the results showed a good agreement with the published experimental data[3,4].
Roll-forging for the round sectional billet was completed in the first pass, and the effect of the reduction on the width-extension and elongation is shown in Fig.4(a).
It is seen that the width-extension nearly linearly increases, and the elongation slowly increases with the increase of the reduction.
Roll-forging for the oval sectional billet was completed in the second pass, and the effect of the reduction on the width-extension and elongation is shown in Fig.4(b).The width-extension slowly increases with the increase of the reduction, and it suddenly increases when the reduction comes up to 10.5 mm;.The elongation slowly increases with the increase of the reduction, and it suddenly increases when the reduction comes up to 8.7 mm;.
In the first pass, the width-extension nearly linearly increases, and the elongation slowly increases with the increase of the reduction; In the second pass, at the beginning, the elongation and the width-extension slowly increase, and then suddenly increase with the increase of the reduction.
Online since: June 2014
Authors: T.A.T. Mohd, A. Azizi, Nurul Aimi Ghazali, N. Alias, M.Z. Shahruddin, E. Yahya, A.Y. Fazil
A base case model is developed from the production data of an actual oil field to simulate the performance of the actual well without gas lift system.
However, injecting too much gas could possibly result in reduction of production rate (Blann and Williams, 1984).
Once the well system model has been tuned to the real field data, different scenario can be modeled to make further predictions of well performance.
Well test data was utilized to develop a base model with the inflow and outflow performance curve matched with the well performance.
With further increment of gas injection rate, a small reduction of oil rate was observed.
Online since: February 2026
Authors: Laksmi Dewi Kasmiarno, Andini Fikarda, Muhamad Rhadia Rahman, Yazid Bindar
On the other hand, the emission analysis for biochar production is concentrated on the slow pyrolysis phase. 2.2.2 Investigated System, Model Assumptions, and Data Sources The collection of secondary data was carried out by accumulating some data from previous research on Palm Oil Plantations, the milling process, and the pyrolysis process.
Furthermore, secondary data about the amount of material used and the energy consumption for the process is obtained from the journal [12].
Then, emission factor data was collected from each energy and component used in the LCA analysis that can emit GHG emissions.
In this study, the land area used for the plantation process is 0.263 Ha, thus the amount of NPK fertilizer will be consumed with the following data: for scenario 1 - 27.615 kg N; 18.41 kg P; 53,652 kg K.
, Our World in Data (2024). https://ourworldindata.org/ghg-emissions-by-sector (accessed September 18, 2024)
Online since: March 2023
Authors: Williams Joseph Ajuwaeze, Roland Tolulope Loto, Philip Babalola, Joshua Okeniyi
Results and Discussion Weight loss analysis The evaluation of the weight loss data presented in Table 1 shows that specimen S1 has a slightly different weight loss profile than the other specimens, starting the trial at 0.0480 g in the first 24 hours.
The data presented in Table 2 showed specimen S1 having a steady increase in weight loss with respect to time.
Table 3 shows the weight loss data of the samples in 3.5 % NaCl/0.00625 M H2SO4 and indicates that specimen S1 shows a somewhat different weight loss characteristic than other specimens starting the experiment at a value of 0.0480 g in the first 24 h. this value increased 24 h later to 0.0640 g, but reduced to 0.0610 g at 72 h.
The data presented in Table 5 showed the various corrosion rates of the specimens in 0.00625M H2SO4 solution.
The data presented in Table 6 showed the various corrosion rates of the specimens in NaCl/H2SO4 solution with respect to exposure time (h).
Online since: June 2008
Authors: Atul H. Chokshi
The lack of experimental data on triple point diffusion limits a critical evaluation of this possibility.
The lack of data on triple junction mobility in polycrystals limits the critical application of such an approach in nanocrystals.
Figure 4a shows some creep data in nano-Ni in terms of the variation in strain rate with stress.
Figure 4b provides creep data on a fine grained 3 mol% yttria stabilized tetragonal zirconia tested over a wide range of conditions [42,43].
The available creep data for metals with grain sizes >20 nm involves high stress exponents, and this may be related to dislocation activity.
Online since: October 2014
Authors: Nik Abdullah Nik Mohamed, Elwaleed Awad Khidir, Rozli Zulkifli, Mohd Faizal Mat Tahir, Mohd Jailani Mohd Nor
However, that increase coincided with reduction of absorption in medium frequency range and reduction in the absorption peak.
Fig. 1: Date palm amplexiaul Fig. 2: Plastic molds and date palm fiber samples Experimental Measurement in Impedance Tube.The experiment was conducted using two of 28 mm and 100 mm diameters, noise generator, two channel data acquisition system 01 dB, two ¼ in microphones type GRAS-40BP in each tube, software package SCS8100.
Data acquisition system Noise generator Impedance tubes Fig. 3: Sound absorption experimental set up Results and Discussion The variation of sound absorption coefficient against frequency for date palm fiber sample at normal incidence as measured by the impedance tube is shown in Fig.4.It can be observed that the values of absorption coefficient are smallat low frequencies, rising with increasing frequency but exhibiting asignificant peak.
The percentage reduction of the absorption peak for the three air gap thicknesses is shown in Table 1.
However, that increase coincided with reduction of absorption in medium frequency range and reduction in the absorption peak.
Online since: April 2024
Authors: Diah Susanti, Taras Genovievo De Yonarosa, Farhan Aryo Hutomo, Azzah Dyah Pramata
CO2 photocatalytic reduction offers promising sustainable solution.
Additionally, when combined with a PAN matrix, it could potentially serve as a material for CO2 reduction membranes.
(b) The results of calculating the length distribution data with Image-J software.
Based on the data presented in Figure 5 and the percentage analysis of the decline in photoluminescence (PL) intensity, the incorporation of CsPbBr3 into PAN to create a CsPbBr3/PAN fiber composite enhanced the resistance of CsPbBr3 to polar solvents, with water being the medium used in this study.
Pradhan, “Halide Perovskite Nanocrystal Photocatalysts for CO 2 Reduction: Successes and Challenges,” J.
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