Results 41 to 50 of about 39,493 (184)

Impact of brown coal dust on the organic matter in particle-size fractions of a Mollisol [PDF]

Organic Geochemistry, 1996
11 pages, 3 figures, 4 tables, 35 references. The influence of brown coal emissions from a briquette factory on the organic matter of a Mollisol has been investigated. Non-contaminated, heavily contaminated soils and airborne particles are compared by using chemical and spectroscopic methods (13C CPMAS-NMR, Py-GC-MS, 14C dating).
Schmidt, M. W. I., Knicker, Heike, Hatcher, Patrick G., Kögel-Knabner, I.   +3 more
openaire   +2 more sources

The influence of the coal dust composition on the propagation speed of the combustion front of the coal dust with an inhomogeneous particle distribution in the air [PDF]

Компьютерные исследования и моделирование, 2018
The problem of the combustion of a gas suspension with an inhomogeneous distribution of particles over space occurs exists for the coal dust suspension combustion in combustion chambers and burners.
Kseniya Mikhailovna Moiseeva, Alexey Yurjevich Krainov   +1 more
doaj   +1 more source

Development of a compact excavator mounted dust suppression system [PDF]

, 2013
This paper reports on the investigation of an excavator mounted dust suppression system for demolition and construction activities. Ever increasing pressure is placed on contractors to improve their environmental performance, especially dust emissions ...
Ahn, Ahn, Arikan, Bartell, Copeland, De Vocht, Dimari, Driussi, Edwards, Gambatese, Gunson, Holman, HSE, HSE, Innovative Technology, Kaveri Ultra Ltd, Kieran Andrew Wallace, Larman, Linnainmaa, Makuch, Mondal, Nij, Petavratzi, Peterson, Pope, Sealpump, Turnkey, Turnkey, Vallero, Wai Ming Cheung, Wessexwater, Wu, Zhao   +32 more
core   +1 more source

EXPERIMENTAL STUDY OF THE EFFECTS OF COAL DUST PARTICLE SIZE ON LAMINAR BURNING VELOCITY IN A MIXTURE OF COAL DUST AND METHAN

Rudarsko-geološko-naftni zbornik, 2019
This study investigates the effect of variations of coal dust particles size on the rate of burning of coal dust particles in a 2-liter closed chamber. Coal dust was selected from three different mines with different sizes (149μm, 125μm, 105μm, 74μm, 63μm, 53μm, 44μm, 37μm) for explosion testing in a closed chamber of 2-liters.
Hadis Moradi, Farhang Sereshki, Mohammad Ataei, Mohsen Nazari   +3 more
openaire   +2 more sources

Comparative study of the explosion pressure characteristics of micro- and nano-sized coal dust and methane–coal dust mixtures in a pipe

International Journal of Coal Science & Technology, 2020
Coal dust explosion accidents often cause substantial property damage and casualties and frequently involve nano-sized coal dust. In order to study the impact of nano-sized coal on coal dust and methane–coal dust explosions, a pipe test apparatus was ...
Bo Tan, Huilin Liu, Bin Xu, Tian Wang
doaj   +1 more source

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

Advanced Engineering Materials, EarlyView.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar, Jana Hubálková, Steffen Dudczig, Gert Schmidt, Florian Kerber, Thomas Schemmel, Patrick Gehre, Christos G. Aneziris   +7 more
wiley   +1 more source

Research on Methane Measurement and Interference Factors in Coal Mines

Sensors, 2022
The detection of methane has always been an important part of coal mine safety. In order to improve the methane measurement accuracy in coal mines and to determine the influence of environmental interference factors on the measurement results, we ...
Xiushan Wu, Jiamin Cui, Renyuan Tong, Qing Li   +3 more
doaj   +1 more source

Thermo‐Fluorescent Bactericidal Quantum Dots Based Smart Multifunctional Textiles via Molecular Surface Engineering and 3D‐Printed Interlocked Architectures

Advanced Healthcare Materials, EarlyView.
A versatile approach is presented for fabricating smart multifunctional textiles by integrating thermo‐fluorescent carbon dot/polymer nanocomposite coatings with 3D‐printed interlocked architectures. The fabrics exhibit temperature‐responsive fluorescence, durable hydrophobicity, strong antibacterial and antioxidant activity, and enhanced UV protection.
Poushali Das, Sayan Ganguly, Parham Khoshbakht Marvi, Misha Muthalali, Fatemeh Parniani, Shiza Hassan, Xiaowu (Shirley) Tang, Seshasai Srinivasan, Amin Reza Rajabzadeh   +8 more
wiley   +1 more source

Characteristics of Coal Dust Deposition in Boiler Tail Gas Pipelines [PDF]

MATEC Web of Conferences
Coal dust deposition in boiler tail gas pipelines can significantly affect boilers’ thermal and energy efficiency. This study investigates the deposition characteristics of coal dust particles in boiler tail gas tubes in variable cross-section tubes ...
Liu Hui quan, Wang Liu, Lu Hao
doaj   +3 more sources

Research on secondary explosion characteristic of coal dust

Gong-kuang zidonghua, 2018
Influence of concentration, particle size and ignition energy of coal dust on secondary explosion characteristic of coal dust were studied by use of 20 L spherical explosion device, and the secondary explosion characteristic of coal dust was compared ...
LIU Haoxiong, LIU Zhentang, QIAN Jifa, HONG Sen, QIU Liming, ZHANG Rui   +5 more
doaj   +1 more source