Results 101 to 110 of about 387,967 (213)

Experimental studies of radar image construction algorithms for propellers and measurement method for repetition frequencies of the blades

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The radar image construction algorithms for propellers of aerial vehicles belonging to the classes «helicopter» and «propeller-driven aircraft» were proposed in [1].
S. R. Heister, T. T. Nguyen
doaj  

Dynamics modeling and performance comparisons of two different rotor flying manipulators: main-tail-rotor VS eight-rotor

, 2014
Rotor flying manipulator (RFM) is a system composed of a rotorcraft and a manipulator. RFM possesses great potential applications and thus has got much concern of the researchers all over the world.
He YQ(何玉庆), Yang B(杨斌), Liu GJ(刘光军), Han JD(韩建达)   +3 more
core  

S‐Adenosylmethionine (SAM) hydrolases counter increased SAM epimerisation in thermophilic archaea

The FEBS Journal, EarlyView.
S‐Adenosyl‐l‐methionine (SAM) is a vital enzyme cofactor. Epimerisation at the sulfonium centre of biologically active (SS,SCα)‐SAM is driven by heat, yielding biologically inactive (RS,SCα)‐SAM. Here, two novel archaeal SAM hydrolases from the thermophilic Sulfolobus acidocaldarius and the halophilic Haloferax volcanii are shown to cleave (RS,SCα)‐SAM.
Agnes Bartels, Michael K. F. Mohr, Phillip Nußbaum, Marie Joest, Bianca Wassmer, Laurent Rasquin, Sonja‐Verena Albers, Jennifer N. Andexer   +7 more
wiley   +1 more source

COMPUTATIONAL MODELING OF AERODYNAMIC INTERFERENCE OF HELICOPTER MAIN AND TAIL ROTORS AT THE SPECIAL FLIGHT REGIMES

Научный вестник МГТУ ГА, 2016
This article is concentrated on modeling and researching of aerodynamic characteristics of main and tail rotors’ combination of a single-rotor helicopter scheme. Non-linear free wake vortical model with diffusion of free wake is used.
Y. M. Ignatkin, P. V. Makeev, A. I. Shomov   +2 more
doaj  

TRIM32 controls timely cell cycle exit in muscular differentiation through downregulation of c‐Myc mRNA

The FEBS Journal, EarlyView.
Trim32 regulates the transition from proliferation to differentiation in C2C12 cells after myogenic induction. We found that, at the onset of differentiation, Trim32 destabilizes c‐Myc mRNA, promotes cell cycle exit, and enables normal myotube formation.
Lu Xiong, Elisa Lazzari, Sabrina Pacor, Simeone Dal Monego, Erica Piovesan, Danilo Licastro, Germana Meroni   +6 more
wiley   +1 more source

Phosphorylation of BigH1 regulates its expression pattern and promotes embryonic development

The FEBS Journal, EarlyView.
Phosphorylation is a key regulator of the linker histone variant BigH1 during Drosophila embryogenesis. We reveal that N‐terminal phosphorylation promotes the timely removal of BigH1 from chromatin. In contrast, C‐terminal phosphorylation supports early nuclear divisions and embryonic viability.
Ramóna Pék, Aladár Pettkó‐Szandtner, Anikó Szabó, Balázs Vedelek, Bence György Gombás, Zoltán Villányi, Péter Vilmos, Imre Miklós Boros, László Henn, Gyula Timinszky   +9 more
wiley   +1 more source

Dynamic Capabilities as Drivers of Circular Business Models: Exploring Direct and Indirect Relationships

Journal of Product Innovation Management, EarlyView.
ABSTRACT Academic Summary Despite the urgent need for a circular economy, firms' transition from linear to circular business models (CBMs) remains slow. While previous research suggests that dynamic capabilities are the key drivers of this transition, it assumes a direct link, overlooking that these capabilities can facilitate change but do not ...
Jörn Block, Thomas Clauss, Matheus Franco, Timo Lemcke, Hubert Speth   +4 more
wiley   +1 more source

RESEARCH AND DEVELOPMENT OF TECHNOLOGICAL SCHEMES FOR MULTISTAGE VIBROIMPACT HARDENING TREATMENT OF LONG FORMED COMPONENTS

Advanced Engineering Research, 2011
The issues related to the quality and service properties maintain of long formed components of the tail rotor spar as an example, are considered. Vibroimpact hardening treatment technological schemes, which application will provide loss in value of the ...
Nikolay S. Koval, Peter D. Motrenko
doaj  

Damage and Failure of Aeroengine Blades Under Small UAV Impacts

International Journal of Aerospace Engineering
Unmanned aerial vehicles (UAVs) may collide with vulnerable parts of other aircrafts, such as engine blades, causing accidents. The research on small UAV impact is limited. Besides, UAV impact with propeller and rotor blades is poorly understood. In this
Zhibin Wu, Chi Chen, Feiying Chen, Jun Liu   +3 more
doaj   +1 more source

Regulation by the Transcriptional Regulator YdcI in E. coli and (p)ppGpp‐Dependent Activation of ydcI Expression

Molecular Microbiology, EarlyView.
YdcI, a LysR‐type transcription regulator in Escherichia coli, regulates loci like iraP and mqo. Its expression is induced by (p)ppGpp under stress conditions, and protein levels rise during mid‐exponential growth, connecting its role to stress response and metabolism control. ABSTRACT YdcI, a LysR‐type transcription regulator, has been associated with
Ria Basu Roy, Karin Schnetz
wiley   +1 more source