Results 131 to 140 of about 181,351 (283)

Bridging the Late Antique Gap in Northwest Arabia: New Archaeological Evidence on the Occupation of Wādī al‐Qurā (al‐ʿUlā [AlUla], Saudi Arabia) Between the Third and Seventh Centuries CE

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT In 2019, the Dadan Archaeological Project (CNRS/RCU/AFALULA) identified a Late Antique village 1 km south of ancient Dadan in the al‐ʿUlā valley (northwest Saudi Arabia). Three excavation seasons at this site (2021–2023) have uncovered a massive building constructed in the late third or early fourth cent.
Jérôme Rohmer, Abdulrahman Alsuhaibani, Charlène Bouchaud, Elora Chambraud, Vladimir Dabrowski, Hatem Djerbi, Fabien Lesguer, Hervé Monchot, Paul Picavet, Louise Purdue, Bertrand Riba, Shadi Shabo   +11 more
wiley   +1 more source

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

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

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

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

Discussion on Monitoring Technology of Coal Mine Dust

Gong-kuang zidonghua, 2011
The paper analyzed harm and characteristics of coal mine dust and standard of contact concentration of respiratory coal dust in air of working space, introduced developing status of monitoring technology of coal mine dust, and compared characteristics of
LI Dong-xiao
doaj  

Dynamic colour change predicts movement behaviour in a diadromous fish

Journal of Fish Biology, EarlyView.
Abstract Dynamic changes in colour and pattern facilitate key behavioural functions in animals, particularly camouflage for predator avoidance. However, the benefits of colour change depend on the environmental and behavioural contexts. We tested how colour change interacts with movement behaviour in a freshwater fish by filming individuals in an open ...
Joshua S. Barrow, John R. Morrongiello
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

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

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