Results 141 to 150 of about 1,200 (259)

The predatory behavior of ants: an impressive panoply of morphological adaptations

Insect Science, EarlyView.
This review focuses on predation in ants, showing the wide diversity of cases from solitary foraging to group hunting tactics, as well as the evolution of mandible shape frequently adapted to capture specific prey. Although most ants are generalist feeders, finding their sugary substances directly on plants or indirectly via sap‐sucking insects, some ...
Alain Dejean, Xim Cerdá, Jérôme Orivel, Frédéric Azémar, Alexander L. Wild, Bruno Corbara, Axel Touchard   +6 more
wiley   +1 more source

Predictions of Liquid Methane (LCH₄) Lubricated Hybrid Tilting Pad Journal Bearings for Reusable Rocket Turbopumps. [PDF]

Materials (Basel)
Kim Y, Kim TH.
europepmc   +1 more source

Dynamic contact and stiffness characteristic analysis of angular contact ball bearings under combined external loads

A nonlinear dynamic model of angular contact ball bearing under combined external loads is established based on the nonlinear elastic Hertz contact theory and raceless control theory.
Qingshan Wang, Bin Qin, Zhen Li, Ruihua Wang   +3 more
core   +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

Theoretical and experimental study on the thermomechanical characteristics of double-row angular contact automotive wheel bearings. [PDF]

Sci Rep
Yanfang D, Kai H, Ming Q, Zibo Y, Wei Y.
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 high-speed planetary gearbox for an electric vehicle. [PDF]

Sci Rep
Zagirnyak M, Drahobetskyi V, Salenko Y, Kulynych V, Moloshtan D, Szczęsny A, Korzeniewska E.   +6 more
europepmc   +1 more source

Surgical Management of Non‐Allergic Rhinitis—An EAACI Task Force Position Paper

Allergy, EarlyView.
ABSTRACT Non‐allergic rhinitis is a frequent yet underdiagnosed cause of chronic nasal symptoms, including nasal congestion, rhinorrhoea, and upper airway hyperreactivity. Its pathophysiology involves neurogenic dysregulation, leading to excessive mucus production and vasodilation.
Marie Lundberg, Julie van Waterschoot, Mathilde Moyaert, Adam Chaker, Philippe Gevaert, Jan Hagemann, Valérie Hox, Maarten Kleijwegt, Ludger Klimek, Devyani Lal, Juan Maza‐Solano, Oliver Pfaar, Fabio Simon Ryser, Michele Shiappoli, Diana Silva, Sanna Toppila‐Salmi, Johanna Wikstén, Sietze Reitsma, Laura Van Gerven   +18 more
wiley   +1 more source

Research on the frictional contact behaviors of high-speed motorized spindle bearing with oil-air lubrication. [PDF]

Sci Rep
Jia W, Guan J, Gao F, Wei X.
europepmc   +1 more source

Simple technique extends life of angular-contact ball bearings

, 1970
Split ring, angular-contact bearing has only one ball path on the inner race and the outer race. Upon failure of either races or balls, bearing is reversed in its housing so that force is applied to opposite points on the races and bearing operation is ...
Zaretsky, E. V.
core