Spirobifluorene‐Based o ‐Carboranyl Compounds: Insights into the Rotational Effect of Carborane Cages on Photoluminescence

2019 ◽  
Vol 26 (2) ◽  
pp. 548-557 ◽  
Author(s):  
Seonah Kim ◽  
Ji Hye Lee ◽  
Hyunhee So ◽  
Jiyeon Ryu ◽  
Junseong Lee ◽  
...  
Keyword(s):  
Rotational Effect

scholarly journals Differences in the rotational effect of buoyancy and trunk kinematics between front crawl and backstroke swimming

2021 ◽  
pp. 1-12
Author(s):  
Tomohiro Gonjo ◽  
Ricardo J. Fernandes ◽  
J. Paulo Vilas-Boas ◽  
Ross Sanders
Keyword(s):  
Front Crawl ◽  
Rotational Effect ◽  
Trunk Kinematics

THE ROTATIONAL EFFECT OF MAGNETIC PARTICLES ON CELLULAR APOPTOSIS BASED ON FOUR ELECTROMAGNET FEEDBACK CONTROL SYSTEM

2021 ◽  
pp. 2150045
Author(s):  
Jia Ji Lee ◽  
Chang Hong Pua ◽  
Misni Misran ◽  
Poh Foong Lee
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Control System ◽  
Feedback Control ◽  
Cell Apoptosis ◽  
Magnetic Particles ◽  
Drug Carriers ◽  
Feedback Control System ◽  
Rotational Effect ◽  
Dynamic Magnetic Field

Objectives: Magnetic drug targeting offers the latest popular alternative option to deliver magnetic drug carriers into targeting region body parts through manipulation of an external magnetic field. However, the effectiveness of using an electromagnetic field to manipulate and directing magnetic particles is yet to be established. Methods: In this paper, a homemade cost-effective electromagnet system was built for the purpose of studying the control and directing the magnetic drug carriers. The electromagnet system was built with four electromagnetic sources and tested the capability in directing the particles’ movement in different geometry patterns. Besides that, the creation of the self-rotation of individual magnetic particle clusters was achieved by using fast switching between magnetic fields. This self-rotation allows the possibility of cell apoptosis study to carry out. The system was constructed with four electromagnets integrated with a feedback control system and built to manipulate a droplet of commercially available iron (II, III) oxide nanoparticles to steer the magnetic droplet along different arbitrary trajectories (square, circle, triangle, slanted line) in 2-dimensional. Results: A dynamic magnetic field of 25 Hz was induced for magnetic nanoparticles rotational effect to observe the cell apoptosis. A profound outcome shows that the declining cell viability of the cell lines by 40% and the morphology of shrinking cells after the exposure of the dynamic magnetic field. Conclusion: The outcome from the pilot study gives an idea on the laboratory setup serves as a fundamental model for studying the electromagnetic field strength in applying mechanical force to target and to rotate for apoptosis on cancer cell line study.

Effect of Coherence Function on Rotational Fourier Spectrum of Wind Turbine

2012 ◽  
Vol 608-609 ◽  
pp. 506-512
Author(s):  
De Tian ◽  
Wei He ◽  
Ning Bo Wang
Keyword(s):  
Wind Turbine ◽  
Fourier Spectrum ◽  
Coherence Function ◽  
Physical Nature ◽  
Turbine Generator ◽  
Generator System ◽  
Integer Multiple ◽  
Rotational Effect ◽  
Decay Factor ◽  
Wind Turbine Generator System

In order to consider the rotational effect of rotor and determine the exact loads of wind turbine generator system, rotational Fourier spectrum was deduced, and the physical nature of the rotational Fourier spectrum was indicated. Importance of coherence function to the rotational Fourier spectrum was analyzed according to physical nature, as well as the parameter sensitivity analysis of decay factor. The result shows that there is a sharp dip of rotational Fourier spectrum at the integer multiple rotational frequencies with Davenport exponential coherence function while it's eliminated with coherence function supplied by IEC international standard. The rotational Fourier spectrum energy removes to the high frequency bands, the amplitudes of peak at the integer multiple rotational frequencies are increased with decay factor increased, which results in rotational effect more obvious.

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