Results 261 to 270 of about 128,637 (311)
Some of the next articles are maybe not open access.
Journal of Microscopy, 1997
The optical rotator is an unbiased, local stereological principle for estimation of cell volume and cell surface area in thick, transparent slabs. The underlying principle was first described in 1993 by Kiêu &38; Jensen ( J. Microsc170, 45–51) who also derived an estimator of length.
Tandrup, T +2 more
openaire +2 more sources
The optical rotator is an unbiased, local stereological principle for estimation of cell volume and cell surface area in thick, transparent slabs. The underlying principle was first described in 1993 by Kiêu &38; Jensen ( J. Microsc170, 45–51) who also derived an estimator of length.
Tandrup, T +2 more
openaire +2 more sources
Medical Hypotheses, 1990
It is suggested that viral nucleic acid inserts in vulnerable regions of host cell DNA contribute to cell transformation by introducing 43 degrees of optical rotation at 425 nm, and that a carcinogenic event caused by DNA inserts and adducts is spurious electron ejection from important adenine molecules that may be far from insert/adduct sites.
openaire +2 more sources
It is suggested that viral nucleic acid inserts in vulnerable regions of host cell DNA contribute to cell transformation by introducing 43 degrees of optical rotation at 425 nm, and that a carcinogenic event caused by DNA inserts and adducts is spurious electron ejection from important adenine molecules that may be far from insert/adduct sites.
openaire +2 more sources
Journal of Modern Optics, 1998
Transversally sharply structured optical fields are discussed, which rotate upon propagation without any lateral expansion of the intensity profile. Finite-aperture approximations of such fields, realizable with phase-only and complex-amplitude recording, are demonstrated.
P. Pääkkönen +8 more
openaire +1 more source
Transversally sharply structured optical fields are discussed, which rotate upon propagation without any lateral expansion of the intensity profile. Finite-aperture approximations of such fields, realizable with phase-only and complex-amplitude recording, are demonstrated.
P. Pääkkönen +8 more
openaire +1 more source
Plasmonic metasurface for optical rotation
Applied Physics Letters, 2017 Optical activity, known as optical rotation, has found many applications ranging from optical isolators and concentration determination to sophisticated organic structure analysis.
Dandan Wen +2 more
exaly +2 more sources
Optical Rotation of Achiral Compounds
Angewandte Chemie International Edition, 2008AbstractOriented achiral molecules and crystals with D2d symmetry or one of its non‐enantiomorphous subgroups, S4, C2v, or Cs, can rotate the plane of transmitted polarized light incident in a general direction. This well‐established fact of crystal optics is contrary to the teaching of optical activity to students of organic chemistry. This Minireview
Kacey, Claborn +3 more
openaire +2 more sources
Nonreciprocal Optical Rotation in Antiferromagnets
Physical Review Letters, 1995We consider nonreciprocal optical effects in classical N\'eel antiferromagnets, where the purely macroscopic electrodynamics does not provide any rotation. The nonzero result appears as a correction linear in the scattering theory parameter $a/\ensuremath{\lambda}$, atomic distance over wavelength.
, Dzyaloshinskii, , Papamichail
openaire +2 more sources
Optical Rotation of Achiral Pentaerythritol
Journal of the American Chemical Society, 2006The optical rotatory power of achiral crystals of achiral pentaerythritol molecules was measured. The maximum rotations were found to be +/-6 degrees /mm. The quantum mechanically computed rotation of pentaerythritol molecules using linear response theory was 6 times larger although the experimental and theoretical tensors were similarly oriented to ...
Claborn, K. +6 more
openaire +3 more sources
Optical Rotation of Noncovalent Aggregates
Journal of the American Chemical Society, 2003Dilute solutions of (R)-(-)-pantolactone in CCl4 were studied by polarimetry in conjunction with theoretical calculations of [alpha]D. Our data demonstrate that the self-association of a chiral solute results in a change in [alpha]D that can be accounted for by the presence of hydrogen-bonded dimeric species.
Michael-Rock, Goldsmith +3 more
openaire +2 more sources
OPTICAL ROTATION AND ATOMIC DIMENSION
Journal of the American Chemical Society, 1934AbstractFrom measurements of the optical rotations of F, Cl, Br, I substitutes of acetyl sugars and of optically active alcohols two rules are derived connecting the differences in optical rotation with the differences of atomic diameter.
openaire +1 more source