Results 141 to 150 of about 4,802 (208)

Investigating Dynamic Characteristics of Cavitation in Insulating Oil Microgaps Under Vibration: Theoretical Analysis and Experimental Observation

High Voltage, EarlyView.
ABSTRACT The internal pressure fluctuations caused by vibration in oil‐immersed electrical equipment can initiate bubbles within narrow oil gaps, reducing the electrical strength of equipment and giving rise to the problem of abnormal gas production in oil‐immersed equipment.
Jiajun Yang, Tao Zhao, Yunpeng Liu
wiley   +1 more source

Hybrid Harris Hawks optimization with eagle strategy particle swarm optimization for stability and disturbance rejection in tethered UAV systems. [PDF]

Sci Rep
Ismael AK, Kurnaz S, Basil N.
europepmc   +1 more source

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

An Ultralight Launch-and-Recovery System for Tethered Micro Unmanned Aerial Vehicles on Small Unmanned Ground Vehicles. [PDF]

Sensors (Basel)
Liu Y, Shen Z, Xu J, Chen S, Zhang B, Xu S.   +5 more
europepmc   +1 more source

Soil wetting and drying processes influence stone artefact distribution in clay‐rich soils: A case study from Middle Gidley Island in Murujuga, northwest Western Australia

Archaeometry, EarlyView.
Abstract Soils that contain swelling clay minerals (e.g., montmorillonite) expand and contract during wetting and drying, causing movement within the soil profile. This process, known as argilliturbation, can alter artefact distributions, destroy stratigraphy and complicate the interpretation of archaeological deposits.
Caroline Mather, Matthias Leopold, Kaitlin Sullivan, Kane Ditchfield, Tom Horrocks, Luke Gliganic, Emma Beckett, Diana Patalwala, Emielda Yusiharni, Michael Smirk, William Hiscock, Jo McDonald   +11 more
wiley   +1 more source

Modeling progressive failure in steep rock slopes using the combined finite-discrete element method. [PDF]

Sci Rep
Xu J, Deng Z, Feng Y, Tan L, Chi F, Chen G.   +5 more
europepmc   +1 more source

Trace Element Patterns in Juvenile Wild Chimpanzee Dentitions

Archaeometry, EarlyView.
ABSTRACT Trace elements are used to infer mammalian early‐life diets, environmental toxins, dispersal patterns, stress histories, and weaning ages. Here, we employ laser ablation‐inductively coupled plasma‐mass spectrometry (LA‐ICP‐MS) to reveal elemental patterns in our closest living relatives, chimpanzees.
Tanya M. Smith, Manish Arora, Maya Bharatiya, Nicole Leonard, Jian‐xin Zhao, Christine Austin   +5 more
wiley   +1 more source

Disaster-causing mechanism and control technology of interlayer rock breakage in gently inclined close distance coal seams mining. [PDF]

Sci Rep
Yuchi X, Du X, Shu P, Yu L, Lei W, Yang W, Zhang Z.   +6 more
europepmc   +1 more source

An Archaeometric Approach to Reveal Organic Compounds via GC‐MS Analyses of Two Discovered Incense Burners at Daba Al‐Bayah

Archaeometry, EarlyView.
ABSTRACT This study focuses on two terracotta incense burners discovered in the Daba Al‐Bayah necropolis in the Musandam Peninsula (Oman), associated with an Iron Age collective tomb (LCG‐2). Through gas chromatography–mass spectrometry (GC‐MS), the organic residues preserved within these artifacts were analyzed to investigate their use and ...
Francesco Genchi, Federica Spagnoli, Vittorio Vinciguerra, Stefania Garzoli   +3 more
wiley   +1 more source

Investigation of Generator Rotor Dynamic Characteristics Under Unbalanced Electromagnetic Forces. [PDF]

Sensors (Basel)
Dai J, Lu H, Guo Y, Xue H, Mei J, Wang Q.   +5 more
europepmc   +1 more source