scholarly journals Conformational analysis of deoxyribonucleic acid from PM2 bacteriophage. The effect of size on supercoil shape

1976 ◽  
Vol 155 (1) ◽  
pp. 101-105 ◽  
Author(s):  
A M Campbell
Keyword(s):  
Light Scattering ◽  
Ionic Strength ◽  
Deoxyribonucleic Acid ◽  
Laser Light ◽  
Structural Models ◽  
Laser Light Scattering ◽  
Mean Square ◽  
Planar Molecule ◽  
The One ◽  
Experimental Interference

Laser light-scattering studies of bacteriophage PM2 DNA showed the molecule to have mol.wt. 5.9 } 10(6) and root-mean -square radius 125 nm at an ionic strength of 0.2 mol/litre. Computer-generated curves compatible with these data were compared with the experimental interference curve for several structural models of the molecules. The data fit best to an asymmetric four-armed planar molecule in which all four arms emerge from or close to the one area of the molecule. This contrasts with the smaller DNA molecules investigated, which have shown a three-armed molecule, whose symmetry varies with primary structure.

Kinetics of Ferritin Self-Assembly by Laser Light Scattering: Impact of Subunit Concentration, pH, and Ionic Strength

2021 ◽  
Vol 22 (4) ◽  
pp. 1389-1398
Author(s):  
Abhinav Mohanty ◽  
Mithra K ◽  
Sidhartha S. Jena ◽  
Rabindra K. Behera
Keyword(s):  
Light Scattering ◽  
Ionic Strength ◽  
Self Assembly ◽  
Laser Light ◽  
Laser Light Scattering ◽  
Kinetics Of

The influence of ionic strength and pH on the aggregation properties of zinc-free insulin studied by static and dynamic laser light scattering

Biopolymers ◽  
1993 ◽  
Vol 33 (11) ◽  
pp. 1643-1657 ◽  
Author(s):  
W. Kadima ◽  
L. Øgendal ◽  
R. Bauer ◽  
N. Kaarsholm ◽  
K. Brodersen ◽  
...  
Keyword(s):  
Light Scattering ◽  
Ionic Strength ◽  
Laser Light ◽  
Laser Light Scattering ◽  
Dynamic Laser Light Scattering ◽  
Free Insulin

Natural colloid characterization using flow-field-flow-fractionation followed by multi-detector analysis

1998 ◽  
Vol 37 (6-7) ◽  
pp. 173-180 ◽  
Author(s):  
Frank v. d. Kammer ◽  
Ulrich Förstner
Keyword(s):  
Light Scattering ◽  
Ionic Strength ◽  
Flow Field ◽  
Laser Light ◽  
Driving Forces ◽  
Relevant Information ◽  
Laser Light Scattering ◽  
Scattering Data ◽  
Field Flow Fractionation ◽  
Flow Fractionation

A design for a flow-field-flow-fractionation with UV/VIS-, fluorescence- and laser-light-scattering-detectors is presented and tested with extracts from a humus rich horizon of a gleyic podzol. It is tested to show how the system can retrieve relevant information about changes in the constitution of the colloid samples. The main objective is the investigation of colloid alteration during processes provoked by main geochemical driving forces (e.g. pH or ionic strength), in this case changes of redox potential. Therefore fluorescence- and UV/VIS-fractograms are taken at different wavelengths and compared. Particle diameters of natural colloids are calculated from laser-light-scattering data and compared with reference standards.

In-Situ Dual-Wavelength Ellipsometry and Light Scattering Monitoring of Si/Si1−xGex Heterostructures and Multiuantum Wells

1993 ◽  
Vol 324 ◽  
Author(s):  
C. Pickering ◽  
D.A.O. Hope ◽  
W.Y. Leong ◽  
D.J. Robbins ◽  
R. Greef
Keyword(s):  
Growth Rate ◽  
Light Scattering ◽  
Laser Light ◽  
Growth Period ◽  
Laser Light Scattering ◽  
Heterojunction Bipolar Transistor ◽  
Dual Wavelength ◽  
Multi Quantum Well ◽  
Refractive Index Data

AbstractIn-situ dual-wavelength ellipsometry and laser light scattering have been used to monitor growth of Si/Si1−x,Gex heterojunction bipolar transistor and multi-quantum well (MQW) structures. The growth rate of B-doped Si0 8Ge0.2 has been shown to be linear, but that of As-doped Si is non-linear, decreasing with time. Refractive index data have been obtained at the growth temperature for x = 0.15, 0.20, 0.25. Interface regions ∼ 6-20Å thickness have been detected at hetero-interfaces and during interrupted alloy growth. Period-to-period repeatability of MQW structures has been shown to be ±lML.

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