Results 141 to 150 of about 23,758 (276)

Research on Coal Dust Wettability Identification Based on GA-BP Model. [PDF]

Int J Environ Res Public Health, 2022
Zheng H, Shi S, Jiang B, Zheng Y, Li S, Wang H.   +5 more
europepmc   +1 more source

Measurement of incombustible content of coal mine dust samples [PDF]

"The Bureau of Mines conducted a laboratory study of the measurement of the water and rock dust (rd) contents of synthetic mine-type coal dust (cd) mixtures using a commercial unit for measuring water content and several prototype radiometric units for ...

core  

Speciation of European bullheads (Cottus spp.): The next problem for taxonomy of northern freshwater fishes

Journal of Fish Biology, EarlyView.
Abstract High morphological and ecological diversity displayed by European bullheads led Freyhof et al. (2005) to describe 15 nominal species. However, the basis for declaring these nominal species is contentious due to a lack of rigorous statistical analysis of morphological variations among populations, limitations in the inferences made from ...
David S. Murray, Vladimír Kováč, David Wright, Gordon H. Copp   +3 more
wiley   +1 more source

Development of a Coal Dust Concentration Sensor Based on the Electrostatic Induction Method. [PDF]

ACS Omega, 2023
Chen J, Li D, Liu G, Li Y, Zhang A, Lu S, Zhou M.   +6 more
europepmc   +1 more source

The Unexpected Discovery of Paleocene? Coals in Outcrops Thought to Be Cambrian, Al Huqf, Oman

Journal of Petroleum Geology, EarlyView.
ABSTRACT Two brown organic deposits were encountered whilst investigating kaolinitic claystones thought to occur at the base of a Cambrian formation at outcrop. The age of these organic deposits is probably Paleocene from palynology. Organic petrography shows that they are subbituminous coals with some oil source potential.
Mohammed H. Al Kindi, Alan P. Heward, Lorraine B. Eglinton, Steve R. Packer, Darrin T. Stead   +4 more
wiley   +1 more source

Movement characteristics of coal powders at bottom of coalbed methane well under jet flow

Energy Science & Engineering
The removal and discharge of coal powders from coalbed methane wellbore is the key to maintaining continuous production. For this reason, based on the submerged jet theory, the force and migration starting conditions of coal powder particles deposited at
Fen‐na Zhang, Li‐kun Xue, Bin Wang, Chuan‐kai Jing, Jia Li, Hao Hu, Xin‐ning Ma   +6 more
doaj   +1 more source

Research on Explosion Pressure Characteristics of Long Flame Coal Dust and the Inhibition Effect of Different Explosion Suppressants. [PDF]

ACS Omega, 2023
Liu T, Gao Z, Xu Y, Duan G, Wang X.
europepmc   +1 more source

Evaluating maturity of organic matter in hydrated C1 and CM‐like clasts and a dehydrated clast within a polymict eucrite and a howardite

Meteoritics &Planetary Science, EarlyView.
Abstract Volatile‐rich xenolithic clasts in different types of brecciated meteorites represent unique pristine solar system material. This study investigates the maturity and thermal history of organic matter using Raman spectroscopy and aqueous alteration effects using infrared spectroscopy in the matrix of 15 volatile‐rich clasts (C1 and CM‐like ...
Swarna Prava Das, Alessandro Maturilli, Aurélie Van den Neucker, Markus Patzek, Dipak Kumar Panda, Gopal K. Pradhan, Guneshwar Thangjam, Surya Snata Rout   +7 more
wiley   +1 more source

Coalition Breakdown and Subsystem Exit

Policy Studies Journal, EarlyView.
ABSTRACT Why actors choose to work together (or not) to advance policy has been the central area of inquiry within the Advocacy Coalition Framework (ACF). Existing research has mainly emphasized the pathway towards coalition formation and evolution, underscoring the stable patterns of allies and opponents observable in policy processes over a decade or
Charlie F. Thompson
wiley   +1 more source

Research on the Effect of Extinction Characteristics of Coal Dust on Visibility. [PDF]

ACS Omega, 2022
Yan J, Wang F, Li Y, Liu H, Gao Y, Li Z.
europepmc   +1 more source