Field- and Phage-Induced Dipolar Couplings in a Homodimeric DNA Quadruplex:  Relative Orientation of G·(C−A) Triad and G-Tetrad Motifs and Direct Determination of C2 Symmetry Axis Orientation

2001 ◽  
Vol 123 (4) ◽  
pp. 633-640 ◽  
Author(s):  
Hashim M. Al-Hashimi ◽  
Ananya Majumdar ◽  
Andrey Gorin ◽  
Abdelali Kettani ◽  
Eugene Skripkin ◽  
...  
Keyword(s):  
Symmetry Axis ◽  
Direct Determination ◽  
Relative Orientation ◽  
Dipolar Couplings ◽  
Axis Orientation ◽  
Dna Quadruplex

Using Ray Tracing Simulations for Direct Determination of Burgers Vectors of Threading Mixed Dislocations in 4H-SiC c-Plane Wafers Grown by PVT Method

2016 ◽  
Vol 858 ◽  
pp. 15-18 ◽  
Author(s):  
Jian Qiu Guo ◽  
Yu Yang ◽  
Fang Zhen Wu ◽  
Joseph J. Sumakeris ◽  
R.T. Leonard ◽  
...  
Keyword(s):  
Ray Tracing ◽  
Mixed Type ◽  
Direct Determination ◽  
Relative Orientation ◽  
Threading Dislocations ◽  
Systematic Method ◽  
X Ray ◽  
Growth Axis

The presence of threading mixed dislocations (TMDs) (with both edge and screw component) in 4H-SiC crystals grown by PVT method has been reported both from axial slices (wafers cut parallel to the growth axis) and commercial offcut wafers (cut almost perpendicular to the growth axis). In this paper, a systematic method is developed and demonstrated to unambiguously determine the Burgers vectors of TMDs in 4H-SiC commercial offcut wafers using both Synchrotron Monochromatic X-ray Topography (SMBXT) and Ray Tracing Simulations. The principle of this method is that the contrast of dislocations on different reflections varies with the relative orientation of Burgers vectors with respect to the diffraction vectors. Measurements confirm that in commercial offcut wafers the majority of the threading dislocations with screw component are mixed type dislocations.

A Method for Direct Determination of Helical Parameters in Nucleic Acids Using Residual Dipolar Couplings

2000 ◽  
Vol 122 (42) ◽  
pp. 10454-10455 ◽  
Author(s):  
Lukáš Trantírek ◽  
Richard Štefl ◽  
Juli Feigon ◽  
Vladimír Sklenář
Keyword(s):  
Nucleic Acids ◽  
Residual Dipolar Couplings ◽  
Direct Determination ◽  
Dipolar Couplings ◽  
Helical Parameters

The Direct Determination of I131 in Heterogeneous Fecal Specimens

1961 ◽  
Vol 41 (4) ◽  
pp. 380-384 ◽  
Author(s):  
Arthur F. Dratz ◽  
James C. Coberly
Keyword(s):  
Direct Determination

A New Method for Direct Determination of the Recoilless Fraction with Application to Magnetic Nanoparticles

2002 ◽  
Vol 721 ◽  
Author(s):  
Monica Sorescu
Keyword(s):  
Room Temperature ◽  
Average Particle Size ◽  
Direct Determination ◽  
Average Particle ◽  
Lattice Method ◽  
Recoilless Fraction ◽  
Single Room ◽  
Magnetite Particles ◽  
Physical Mixtures

AbstractWe propose a two-lattice method for direct determination of the recoilless fraction using a single room-temperature transmission Mössbauer measurement. The method is first demonstrated for the case of iron and metallic glass two-foil system and is next generalized for the case of physical mixtures of two powders. We further apply this method to determine the recoilless fraction of hematite and magnetite particles. Finally, we provide direct measurement of the recoilless fraction in nanohematite and nanomagnetite with an average particle size of 19 nm.

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