Results 51 to 60 of about 1,297,449 (284)

Reduction of Torque Ripples in Multi-Stack Slotless Axial Flux Machine by Using Right Angled Trapezoidal Permanent Magnet

IEEE Access, 2021
The aim of this paper is to design, analyze and optimize the “Multi-Stack Slotless Axial Flux Switching Permanent Magnet Machine”. In the design process, mathematical models are implemented, and the Finite Element Method (FEM) is performed ...
Muhammad Yousuf, Faisal Khan, Junaid Ikram, Rabiah Badar, Syed Sabir Hussain Bukhari, Jongsuk Ro   +5 more
doaj   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

FEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Effects of Physiological Loading from Patient-Derived Activities of Daily Living on the Wear of Metal-on-Polymer Total Hip Replacements

Bioengineering
The current pre-clinical testing standards for total hip replacements (THRs), ISO standards, use simplified loading waveforms that do not fully replicate real-world biomechanics. These standards provide a benchmark of data that may not accurately predict
Benjamin A. Clegg, Samuel Perry, Enrico De Pieri, Anthony C. Redmond, Stephen J. Ferguson, David E. Lunn, Richard M. Hall, Michael G. Bryant, Nazanin Emami, Andrew R. Beadling   +9 more
doaj   +1 more source

Fundamental study of acoustic leakage through a gap between gasket and flange surface

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2016
In this study, we theoretically and experimentally explore the acoustic leak of an entire acoustic system as well as the various gap occurring between a gasket and flange.
Shuichi SAKAMOTO, Takanari AZAMI, Isami NITTA, Yosuke TSUKIYAMA   +3 more
doaj   +1 more source

Thermal Error Modelling of a CNC Machine Tool Feed Drive System using FEA Method [PDF]

, 2016
Recirculating ball screw systems are commonly used in machine tools and are one of the major heat sources which cause considerable thermal drift in CNC machine tools.
Abuaniza, Ayman, Fletcher, Simon, Longstaff, Andrew P., Mian, Naeem S.   +3 more
core  

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Correction of positioning and angular errors for ball screw feed unit

Nihon Kikai Gakkai ronbunshu, 2014
In the present study, we developed a new feed correction mechanism which corrected not only a positioning error (i.e., feed deviation) but also an angular error (i.e., yaw of a table).
Yuuma TAMARU, Hiroki SHIMIZU, Hiroshi KAMODA   +2 more
doaj   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Development and practical use of analysis method to improve efficiency of mechanical transmitting element design in conceptual phase (Development to engineering designer of spring and cable analysis methods by own dedicated graphical user interface and contact functions)

Nihon Kikai Gakkai ronbunshu, 2014
In the recent manufacturing sector, various requirements, such as improving quality, improving performance, shortening the development period, cost reduction, energy saving and lightweight, are imposed.
Hidekazu NISHIGAKI, Tomonori TADA, Tatsuyuki AMAGO, Tomokazu MATSUI   +3 more
doaj   +1 more source

Permanent-magnet brushless machines with unequal tooth widths and similar slot and pole numbers [PDF]

, 2005
This paper presents a comparative study of three-phase permanent-magnet brushless machines in which the slot and pole numbers are similar, with reference to conventional brushless dc machines in which the ratio of the slot number to pole number is ...
Howe, D., Ishak, D., Zhu, Z.Q.
core   +1 more source