Results 61 to 70 of about 914,181 (280)

Wing–Wake Interaction Dynamics for Gust Rejection in Dragonfly-Inspired Tandem-Wing MAVs

Drones
Dragonflies exhibit remarkable flight stability in unsteady environments, largely due to aerodynamic interaction between their forewings and hindwings. This study investigates gust response in dragonfly-inspired micro-aerial vehicles (MAVs) from a system
Sebastian Valencia, Jaime Enrique Orduy, Dylan Hidalgo, Javier Martinez, Laura Perdomo   +4 more
doaj   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

FEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri, Ayaka Nagasato‐Ichikawa, Keita Iida, Shuhei Kimura, Akira Imamoto, Mariko Okada   +5 more
wiley   +1 more source

Variant scheme and aerodynamic characteristics analysis of autonomous takeoff and landing various-speed aircraft

Hangkong gongcheng jinzhan
In response to the current limitations of variable-wing designs in cross-speed regimes, which often suffer from limited aerodynamic efficiency and compromised structural integrity, this work proposes a variable-configuration solution based on an oblique ...
ZHAN Xiyu, WEI Wenyu, LI Jiarui, WANG Xinghui, WANG Zikang, HU Haoyuan, LI Zihao, MA Yiyuan   +7 more
doaj   +1 more source

Choosing the aerodynamic configuration of a subsonic cruise missile

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2019
The paper presents a comparison of two aerodynamic configurations of subsonic cruise missiles, characterized by the use of swept-back and forward-swept wings. The results of wind tunnel tests with the use of an automated measurement system characterizing
M. A. Kovalev, A. N. Nikitin
doaj   +1 more source

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

FEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança, Eline L. Jansen, Jorine M. Eeftens   +2 more
wiley   +1 more source

EFFECT OF SUV BODY GEOMETRY ON AERODYNAMIC DRAG AND FUEL EFFICIENCY USING CFD

Scientific Journal of Mechanical Engineering Kinematika
The increasing demand for fuel efficiency in the automotive industry, particularly in the sport utility vehicle (SUV) segment, has intensified research on factors influencing vehicle energy efficiency.
Arifin Oktobrian Winanta, Dewandono Bayu Seto, Onery Andi Saputra   +2 more
doaj   +1 more source

‘Guide and Prejudice’— How Argonautes recognize targets across domains of life

FEBS Letters, EarlyView.
Argonaute proteins use short nucleic‐acid guides to locate and regulate specific targets across all domains of life. Despite striking diversity—from human gene silencing to bacterial immune defence—all Argonautes share a conserved three‐stage recognition logic: guide‐directed sampling, progressive target pairing with a conformational checkpoint and ...
Jack P. K. Bravo
wiley   +1 more source

Aerodynamic Performance Enhancement of an Automobile Through Utilization of Cooling Ventilation

International Journal of Automotive Engineering
Reducing aerodynamic drag is crucial to improve the efficiency of vehicles. In this study, the feasibility of releasing the cooling flow into wake region to enhance automobile’s aerodynamic drag performance was investigated.
Feiyi Chen, Takuji Nakashima, Takenori Hiraoka, Keigo Shimizu, Yusuke Nakamura, Hidemi Mutsuda   +5 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Comparison of Aerodynamic Characteristics of Morphing and Conventional Wings [PDF]

INCAS Bulletin
The present research investigates the advantages of a morphing versus a hinged flap. The morphing wing model is equipped with a morphing trailing edge, while the conventional wing has a hinged flap system.
Mir Hossein NEGAHBAN, Ruxandra Mihaela BOTEZ   +1 more
doaj   +1 more source