نتایج جستجو برای: helical coil

تعداد نتایج: 46339  

Journal: :The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science 1910

1999
A. Buhot A. Halperin

– The helix-coil transition is modified by grafting to a surface. This modification is studied for short peptides capable of forming α-helices. Three factors are involved: (i) the grafting can induced change of the boundary free energy of the helical domain (ii) the van der Waals attraction between the helices and (iii) the crowding induced stretching of the coils. As a result the helix-coil tr...

Journal: :IEEE Transactions on Industrial Electronics 2022

Megahertz-range wireless power transfer has become a promising approach for increasing spatial freedom of charging. This article proposes cylindrical-shaped coil, which can produce the homogeneous magnetic field in plane. The coil consists two helical windings, are wound to guide current opposite directions. A single source is used excite transmitter without any amplitude or phase control circu...

Journal: :Proceedings of the JFPS International Symposium on Fluid Power 1993

Journal: :IEEJ Transactions on Fundamentals and Materials 2001

2012
William Marshall Potter Qun Zhao Uwe Happek Kevin McCully Leidong Mao Heinz-Bernd Schuttler Terence Ryan Joonsang Lee Luning Wang Tomas Koci

Radio Frequency coil development, one component of a functioning magnetic resonance imaging (MRI) system, has evolved since the beginning of MRI into a very diverse area. Today for example, transmit and receive coils, volume and surface coils, and single channel and multiple channel coils are all included. Coils are created to fit the particular needs of specific research purposes, taking into ...

Journal: :The Journal of biological chemistry 2001
R A Kammerer V A Jaravine S Frank T Schulthess R Landwehr A Lustig C Garcia-Echeverria A T Alexandrescu J Engel M O Steinmetz

We previously reported that a helical trigger segment within the GCN4 leucine zipper monomer is indispensable for the formation of its parallel two-stranded coiled coil. Here, we demonstrate that the intrinsic secondary structure of the trigger site is largely stabilized by an intrahelical salt bridge. Removal of this surface salt bridge by a single amino acid mutation induced only minor change...

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