Results 101 to 110 of about 39,493 (184)

Variation on Toxic and Inflammatory Potential of Coal Smoke of Different Sources From a Region With High Lung Cancer Risk

Environmental Toxicology, EarlyView.
ABSTRACT Excess lung cancer risk in Xuanwei and Fuyuan, China, has been attributed to household air pollution from use of a locally sourced smoky (bituminous) coal. However, the carcinogenic mechanisms remain unclear. Given the important role of inflammation in lung cancer development, this study compared the proinflammatory potentials of the ...
Yongliang Zhang, Wei Hu, Nathanial Rothman, Dingyu Liu, Jihua Li, Jun Xu, Bofu Ning, Roel Vermeulen, Qing Lan, Flemming R. Cassee, George S. Downward   +10 more
wiley   +1 more source

Identification of force chains in wet coal dust layer and the effect of porosity on three-body contact stiffness

Scientific Reports
Aiming at the three-body contact problem of mechanical rough surface containing wet coal dust interface, the three-body contact model of rough surface containing wet coal dust interface is constructed by comprehensively considering the contact ...
Xinwei Yang, Dongxuan Wu, Yangxi Bai, Hongyue Chen, Xin Wang   +4 more
doaj   +1 more source

Prediction of heterogeneous nucleation condensation effect on the surface of respiratory coal dust and test of dust reduction test

Meitan xuebao
Surface wettability of coal dust particles is an important factor restricting the efficiency of wet dust removal. Heterogeneous nucleation condensation on the surface of coal dust particles is a means without any pollution, without considering the ...
Hanyi LIN, Liang YUAN, Bingyou JIANG, Yuqian ZHANG, Yifan WANG, Haoyu WANG   +5 more
doaj   +1 more source

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

Journal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton, Abdeljalil Bouzouggar, Stacy Carolin, Louise Humphrey   +3 more
wiley   +1 more source

Babcock and Wilcox's experience with two-phase flow mixtures of coal and gas [PDF]

The performance of pulverized coal injection systems in operation on blast furnaces is described in terms of application to coal gasification, fluidized bed combustion, and ...
Bolumen, A. G.
core   +1 more source

New Results From the Pre‐Pottery Neolithic Site of Al Uyaynah, Tabuk, in Northwestern Saudi Arabia

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT Al Uyaynah is a low sandstone mound on an alluvial plain, long known for its extensive surface remains of stone‐built circular and rectangular structures. Following test excavations in 2012, more detailed excavation was undertaken in 2016 within one of the largest rectangular stone structures.
Khalid Alasmari, Stephanie F. Piper, Kirsten Grothe, W. Derek Hamilton, Delphine Joly, Penny Bickle, Geoff Bailey   +6 more
wiley   +1 more source

In utero ultrafine particulate matter exposure causes offspring pulmonary immunosuppression. [PDF]

, 2019
Early life exposure to fine particulate matter (PM) in air is associated with infant respiratory disease and childhood asthma, but limited epidemiological data exist concerning the impacts of ultrafine particles (UFPs) on the etiology of childhood ...
Chang, Richard C-A, Golding, Michael C, Johnson, Natalie M, Langley, Rebecca, Lau, Carmen, Leal, Jeann, Li, Yixin, Molina, Mario J, Myatt, Louise G, Pulczinski, Jairus, Raju, Muppala, Rodrigues-Hoffmann, Aline, Rychlik, Kristal A, Secrest, Jeremiah R, Zamora, Misti L, Zhang, Renyi   +15 more
core  

Mountain‐top spherules: Criteria to identify natural and synthetic particles

Meteoritics &Planetary Science, EarlyView.
Abstract Natural microspherules are important tracers of geologic and environmental processes in modern and ancient deposits. However, anthropogenic contamination can dilute natural collections by releasing synthetic microspherules into the environment.
M. R. Boyd, M. J. Genge
wiley   +1 more source

Adhesion Behavior of Underground Coal Dust with Fused Silica: Effects of Relative Humidity and Particle Size

Processes
Coal dust particles adhering to a camera lens reduce its light transmittance, which deteriorates the performance of the camera and may lead to serious problems with mining equipment that requires visual ability. Aiming at improving coal dust removal and cleaning technologies, the adhesion behavior of coal dust with fused silica is studied here ...
Shujun Zhou, Yue Yang, Hongfei Shang
openaire   +1 more source

Study on the Explosion Mechanism of Low-Concentration Gas and Coal Dust

Fire
In coal mines, the mixture of coal dust and gas is more ignitable than gas alone, posing a high explosion risk to workers. Using the explosion tube, this study examines the explosion propagation characteristics and flame temperature of low-concentration ...
Li Liu, Xinyi Mao, Yongheng Jing, Yao Tang, Le Sun   +4 more
doaj   +1 more source