Results 31 to 40 of about 570,264 (335)

Variation of macro and microscopic characteristic parameters and kinetics of secondary oxidation of residual coal

open access: yesMeikuang Anquan, 2023
In order to investigate the spontaneous combustion characteristics of secondary oxidation of residual coal in the mining area, the changes of microscopic and macroscopic parameters during the secondary oxidation of raw and oxidized coals were compared ...
LIANG Wenxu   +4 more
doaj   +1 more source

RESTORATION AND CONSERVATION OF A UNIQUE ARCHAEOLOGICAL CARPET FROM PRINCE MUHAMMAD CALI PALACE MUSEUM IN AL-MANIAL, CAIRO (CASE STUDY) [PDF]

open access: yesJournal of the General Union of Arab Archaeologists, 2022
[Ar] ترميم وصيانة سجادة آثرية فريدة من متحف قصر الأمير محمد على بالمنيل – القاهرة (دراسة حالة) يمثل السجاد التاريخى أحد أكثر الكنوز الفنية التى يجب الحفاظ عليها للأجيال القادمة.
Mariam Samy   +3 more
doaj   +1 more source

Mineralogical Analysis of Historical Mortars by FTIR [PDF]

open access: yesMaterials, 2018
A method for quantitative mineralogical analysis by ATR-FTIR [1] has been used first time for analysis of historical mortars. Mixtures of different minerals and gypsum were used in order to measure the minimum band intensity that must be considered for calculations and the detection limit.
M. M. Jordán   +3 more
openaire   +4 more sources

Exploring the Possibilities of Producing Pulp and Paper from Discarded Lignocellulosic Fibers

open access: yesJournal of Natural Fibers, 2023
The main objective of this work was to explore the prospects of producing pulp and paper from leftover lignocellulosic fibers. In this study discarded Cocos nucifera fibers were collected from an abandoned site and were washed thoroughly.
B. NagarajaGanesh   +3 more
doaj   +1 more source

Physico-chemical, Thermal and Micro-structural Characterization of Four Common Banana Pseudo-Stem Fiber Cultivars in Nigeria

open access: yesJournal of Natural Fibers, 2023
This study explores Banana pseudo-stem fiber (BPSF) derived from BPF cultivars that are common in Nigeria. The four cultivars are known locally as Agbagba, Omini, Panbola, and Paranta.
Abideen Temitayo Oyewo   +8 more
doaj   +1 more source

Fabrication of Bioglass 58S 3D macroporous scaffolds, using a PMMA monolith template, to improve cell viability

open access: yesNext Materials
Bioglass 58S is a bioactive material that can be used to help bone regeneration. In this article we present the fabrication of macroporous 58S Bioglass scaffolds with 3D interconnected porosity, that were prepared by immersing a PMMA microsphere monolith
Marie-Hélène Thibault   +6 more
doaj   +1 more source

Comprehensive Analysis of Oil Sludge from The Absheron Peninsula to Solve Environmental Problems [PDF]

open access: yesBIO Web of Conferences
The Absheron Peninsula, historically known for its oil production, is home to several key oil fields including Bibi-Eybet, Balakhani, Surakhani and Ramana.
Aliyev Goshgar, Aliyev Emin
doaj   +1 more source

Fluorescence and Physico-Chemical Properties of Hydrogenated Detonation Nanodiamonds

open access: yesC, 2020
Hydrogenated detonation nanodiamonds are of great interest for emerging applications in areas from biology and medicine to lubrication. Here, we compare the two main hydrogenation techniques—annealing in hydrogen and plasma-assisted hydrogenation ...
Giannis Thalassinos   +12 more
doaj   +1 more source

Groups evolution of long-flame coal oxidation process under various air ambience

open access: yesMeikuang Anquan, 2022
The intensity of air leakage not only increases the risk of spontaneous combustion of coal, but also is the cause of coal fire disasters caused by spontaneous combustion of coal left in the goaf.
LYU Zhiguang   +4 more
doaj   +1 more source

Heat alterations of flint artefacts: archaeological evidence, experiments and analyses

open access: yesБългарско е-Списание за Археология, 2020
Heat treatment of flint and other knappable materials has been recognized among prehistoric archaeological lithics, leading to a wide range of experiments and archaeometric analyses.
Мaria Gurova   +4 more
doaj  

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