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Online since: March 2025
Authors: Ahmad Nayan, Deassy Siska, Nurul Islami
Based on data obtained from the Indonesian Plastic Industry Association (INAPLAS) and the Central Statistics Agency (BPS), Indonesia is the second largest contributor to plastic waste in the world, plastic waste in Indonesia reaches 64 million tons per year of which 3.2 million tons are discharged into the sea [4].
This finding is particularly significant in the context of sustainable materials and waste reduction, as it demonstrates the potential for rice husk-based biofoam to contribute to the development of more eco-friendly packaging and insulation solutions.
Online since: January 2022
Authors: Alexandra Bourdot, Chady El Hachem, Maroua Maaroufi, Kamilia Abahri
Therefore, the necessity of using materials with low environmental impact and controlling the transfers phenomena through them come as a preliminary step to improve the thermal performance of buildings and reduction in their environmental impact.
The modelled curves show a good agreement with the experimental ones, and the root mean squared error between the experimental data and the adjustment curves is 0,03%.
Online since: July 2017
Authors: Georgy Shimov, Alexander Serebryakov, Andrey V. Serebryakov
The method provides reduction of stretching residual tension in pipe wall.
Comparison of data obtained at experiment (strength, relative lengthening, yield point at 350 0C, point of grain of pipes metal, resistance of pipes metal against ICC) with requirements of Standard Specification 14-3P-197-2001 and with averaged properties of pipes metal of 16х1.5 mm made of steel 08Cr18Ni10Ti by the applied technology (Standard Specification 159-TR.TB-58-90) is presented in Table 2.
Online since: June 2017
Authors: Ji Xue Zhou, Bai Chang Ma, Yuan Sheng Yang, Yun Teng Liu, Di Zhang, Tao Lin
The compression specimens were cut along the extruded direction of the billet, the diameter and height of the specimen are 10 mm and 15 mm, respectively, and a height reduction of 60% was applied.
Song, Constitutive modeling for the dynamic recrystallization evolution of AZ80 magnesium alloy based on stress-strain data, Mat.
Online since: November 2023
Authors: Radhakanta Rana, Theo Kop, Peter Beentjes, Ellen van der Aa
For all the tests and characterizations, statistically enough data were collected and the average or representative results are presented here.
This was caused by the formation of intermetallic phases at 675 oC with a higher melting point than that of the Zn-layer before hot forming, resulting in a reduction of the amount of Zn-rich liquid phase during RSW.
Online since: March 2022
Authors: Sharifah Maszura Syed Mohsin, Nurul Natasha Nasrudin, Abdul Muiz Hasim, Nur Farhayu Ariffin, Muhammad Nor Syahrul Zaimi, Muhammad Rafie Ashaari
On the other hand, the strength of concrete with different increases of coir fiber content (0 %, 3 %, 5 %, and 7 %) showed a reduction, according to [12] [13] studied.
Table 2 shows prior data on tensile strength using coir fiber as a substitute.
Online since: March 2022
Authors: Pajaera Patanathabutr, Nattakarn Hongsriphan, Chalermpon Jamjalern, Pailin Thikulwong, Rawiporn Yooyen
This resulted from the reduction of molecular weight when processed PLA at high temperature [4] which correlated to the DSC analysis.
Data from the 2nd heating scan of DSC showing glass transition temperatures (Tg), cold crystallization temperatures (Tcc), crystal melting temperatures (Tm), and the degree of crystallinity (Xc) of the recycled PLA samples contaminated with PET concentrations of 0.5, 1.0, and 1.5 wt%.
Online since: February 2007
Authors: Bin Zhu, Jin Rui Xu, Xiang Rong Liu, Jun Cai Sun, Z.Q. Mao
The FC performance was determined in a computerized data acquisition system by measuring current and voltage under variable loads and temperatures.
The ceria (SDC) exposed in the hydrogen of the FC atmosphere can cause a certain electronic conduction (n-type semiconduction) on the ceria (SDC) particle surface due to the reduction of Ce 4+ to Ce 3+; extra electrons were produced [22-24].
Online since: May 2004
Authors: Cemail Aksel
Particle size calculated from specific surface area data increased gradually up to 900 °C, with sharp rises at 1300 °C.
Density / % MgO Grain Size / µm Large Cracks Colour M (PS) 1650 120 88-93 8-19 √√√√√√√√ white MA10 (PS) 1700 300 88-91 31-94 √√√√√√√√ white/cream MS10 (PS) 1700 120 ~90 28-73 √√√√ white MgAl2O4 (PS) 1650 300 88-91 20-47 √√√√ white M (HP) 1700 20 96-97 6-16 √√√√ grey MA10 (HP) 1680 20 ~98 56-64 - grey/black MS10 (HP) 1700 20 93-96 20-50 - grey MgAl2O4 (HP) 1700 20 ~99 ~15-25 - grey/black To achieve a reduction and/or remove macrocracking from hot-pressed material, the surfaces of the graphite discs were coated with a boron nitride suspension (containing 1% Methyl cellulose, BDH Ltd.) in distilled water, which prevented the powder from sticking to the graphite discs during hot-pressing.
Online since: October 2010
Authors: Amândio Teixeira-Pinto
Feldspar 12 Aluminium 8.13 0.8 Quartz 12 Iron 5.00 0.7 Pyroxene 11 Calcium 3.63 1.4 Mica 5 Sodium 2.83 1.6 Amphiboles 5 Potassium 2.59 2.1 Olivine 3 Magnesium 2.09 0.6 Clayey Minerals 4.6 While the first three columns indicate data relative to the 8 main elements present on the Crust, the next two refer to the most abundant minerals.
Taking granite as an example, we can summarize [4] the chemical phenomena that explain the alterations of feldspars (other granite components, as quartz and muscovite, do not suffer chemical degradation): · progressive hydration of the aluminium environment · subsequent modification of the coordination number of aluminium with oxygen (from 4 to 6) · lixiviation of alkaline metals (sodium and potassium) · reduction of silicic acid levels · transformation of matrix structure (from 3D into 2D-clay particles) This way the granitic rock is transformed into clay (the phenomenon is called kaolinization).
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