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Chemicals, plastics and rubber industries

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Strong effect of hydrodynamic coupling on the electric dichroism of bent rods

Article Abstract:

The effect of hydrodynamic coupling on the spatial orientation of rigid bent rods in electric fields is analyzed by Borwnian dynamics simulations. Bead models for smoothly bent rods were constructed with dimensions of DNA double helices, and established simulation procedures used to calculate their diffusion tensor, including the translational-rotational coupling tensor.

Author: Porschke, Dietmar, Antosiewicz, Jan M.
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
Electric fields

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Unique physical signature of DNA curvature and its implications for structure and dynamics

Article Abstract:

An improved birefringence technique is used for measuring the electrooptical data of curved DNA at low electric field strengths over a wide range of ion concentrations. A clear increase of the curvature is observed with the increase in salt concentration.

Author: Porschke, Dietmar
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2007
Structure, Chemical properties, DNA synthesis

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Dipole reversal in bacteriorhodopsin and separation of dipole components

Article Abstract:

The electrostatics of purple membranes was analyzed by measurements of the electric dichroism in dc and ac fields in a broad pH range. The minimum value of the dichroism indicates the permanent dipole and shows a complex dependence on the pH.

Author: Porschke, Dietmar, Wang, Guangyu
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
Electric properties, Chemistry, Physical and theoretical, Physical chemistry, Dielectrics, Dielectric materials, Membranes (Technology)

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Subjects list: Research, DNA
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