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atomic structure

Overview page. Subjects: Science and Mathematics.

By 1890, much evidence had accumulated that the atom of chemistry and the molecule of physics must have parts. The chemical evidence included analogies between the behavior of dilute...

See overview in Oxford Index

ATOMIC FINE STRUCTURE

Norman F. Ramsey.

in Molecular Beams

January 1986; p ublished online September 2007 .

Chapter. Subjects: Atomic, Molecular, and Optical Physics. 7098 words.

Atomic fine structure is the separation of atomic energy levels due to the interaction of the electron spin with atomic fields at the electron. This structure was discovered in optical...

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ATOMIC MOMENTS AND HYPERFINE STRUCTURES

Norman F. Ramsey.

in Molecular Beams

January 1986; p ublished online September 2007 .

Chapter. Subjects: Atomic, Molecular, and Optical Physics. 19284 words.

The earliest magnetic resonance experiments were with non-paramagnetic molecules in 1Σ states which have no net electronic magnetic moment. They were later applied to paramagnetic atoms,...

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Atomic step dynamics on periodic semiconductor surface structures

Jack M. Blakely, So Tanaka and Ruud M. Tromp.

in Microscopy

January 1999; p ublished online January 1999 .

Journal Article. Subjects: Biological Sciences. 0 words.

A series of experiments using periodically patterned morphologies have been carried out on Si surfaces. Both 1- and 2-dimensional periodic structures have been studied. These experiments...

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Atomic structure observation of silicon carbide using HRTEM

Eriko Takuma, Hideki Ichinose and Fu‐Rong Chen.

in Microscopy

October 2002; p ublished online October 2002 .

Journal Article. Subjects: Biological Sciences. 0 words.

Atomic‐resolution high‐resolution high‐voltage transmission electron microscopy was applied to the chemical structure analysis of silicon carbide. Each atomic column was imaged in dark...

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atomic structure

Overview page. Subjects: Science and Mathematics.

By 1890, much evidence had accumulated that the atom of chemistry and the molecule of physics must have parts. The chemical evidence included analogies between the behavior of dilute...

See overview in Oxford Index

atomic structure

J. L. Heilbron.

in The Oxford Companion to the History of Modern Science

January 2003; p ublished online January 2003 .

Reference Entry. Subjects: History of Science and Technology. 1109 words.

By 1890, much evidence had accumulated that the atom of chemistry and the molecule of physics must have parts.

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Atomic Resolution Electronic Structure in Silicon-Based Semiconductors

P. E. Batson.

in Microscopy

February 1996 .

Journal Article. Subjects: Biological Sciences. 0 words.

An experimental method for obtaining conduction band electronic structure from the silicon L2,3 absorption edge is reviewed. The method uses Spatially Resolved Electron Energy Loss...

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Atomic structures of multi-walled boron nitride nanohorns

Atsushi Nishiwaki and Takeo Oku.

in Microscopy

September 2005; p ublished online September 2005 .

Journal Article. Subjects: Biological Sciences. 0 words.

Boron nitride (BN) nanohorns were synthesized by an arc-melting method, and atomic structure models for BN nanohorns with tetragonal BN rings were proposed from high-resolution electron...

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Molecular structure of human topoisomerase IIα revealed by atomic force microscopy

Saju R. Nettikadan, Christine S. Furbee, Mark T. Muller and Kunio Takeyasu.

in Microscopy

January 1998; p ublished online January 1998 .

Journal Article. Subjects: Biological Sciences. 0 words.

The entire human topoisomerase II alpha (hTopoIIα) dimer was expressed in the yeast Saccaromyces cerevisiae, purified to homogeneity, and subjected to atomic force microscopy (AFM) under a...

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Visualization of hemiknot DNA structure with an atomic force microscope

Yuri L. Lyubchenko, Luda S. Shlyakhtenko, Melinda Binus, Claire Gaillard and François Strauss.

in Nucleic Acids Research

November 2002; p ublished online November 2002 .

Journal Article. Subjects: Chemistry; Biochemistry; Bioinformatics and Computational Biology; Genetics and Genomics; Molecular and Cell Biology. 4265 words.

The hemiknot, a novel type of DNA structure in which a loop is stabilized by threading one end of the duplex through another, has been studied in this paper. The hemiknot was obtained by...

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A Structure Model for Black Holes: Atomic-Like Structure, Quantization and the Minimum Schwarzschild Radius

Yukinori Nagatani.

in Progress of Theoretical Physics

May 2005; p ublished online May 2005 .

Journal Article. 0 words.

A structure model for black holes is proposed employing a mean field approximation of gravity. This model, which consists of a charged singularity at the center and quantum fluctuations of...

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Evaluation of atomic level mean force potentials via inverse folding and inverse refinement of protein structures: atomic burial position and pairwise non-bonded interactions

Stephen E. DeBolt and Jeffrey Skolnick.

in Protein Engineering, Design and Selection

August 1996 .

Journal Article. Subjects: Proteins. 0 words.

Two atomic level knowledge-based mean force interaction potentials (KBPs), a centrosymmetric burial position term and a long-range pairwise term, were developed. These were tested by...

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Voronoia4RNA—a database of atomic packing densities of RNA structures and their complexes

Jochen Ismer, Alexander S. Rose, Johanna K. S. Tiemann, Andrean Goede, Kristian Rother and Peter W. Hildebrand.

in Nucleic Acids Research

January 2013; p ublished online November 2012 .

Journal Article. Subjects: Chemistry; Biochemistry; Bioinformatics and Computational Biology; Genetics and Genomics; Molecular and Cell Biology. 3167 words.

Voronoia4RNA (http://proteinformatics.charite.de/voronoia4rna/) is a structural database storing precalculated atomic volumes, atomic packing densities (PDs) and coordinates of internal...

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M<span class="smallCaps">onster</span>: inferring non-covalent interactions in macromolecular structures from atomic coordinate data

William J. Salerno, Samuel M. Seaver, Brian R. Armstrong and Ishwar Radhakrishnan.

in Nucleic Acids Research

July 2004; p ublished online July 2004 .

Journal Article. Subjects: Chemistry; Biochemistry; Bioinformatics and Computational Biology; Genetics and Genomics; Molecular and Cell Biology. 1601 words.

A web application for inferring potentially stabilizing non-bonding interactions in macromolecular structures from input atomic coordinate data is described. The core software, called Monsternull...

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Structure of rice starch granules in nanometre scale as revealed by atomic force microscopy

Toshio Ohtani, Tomoyuki Yoshino, Tatsuo Ushiki, Shouji Hagiwara and Takaaki Maekawa.

in Microscopy

January 2000; p ublished online January 2000 .

Journal Article. Subjects: Biological Sciences. 0 words.

Atomic force microscopy (AFM) was performed for the analysis of the fine structure of rice starch granules in the nanometre scale which were prepared by a physical destruction method. The...

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STRIDE: a web server for secondary structure assignment from known atomic coordinates of proteins

Matthias Heinig and Dmitrij Frishman.

in Nucleic Acids Research

July 2004; p ublished online July 2004 .

Journal Article. Subjects: Chemistry; Biochemistry; Bioinformatics and Computational Biology; Genetics and Genomics; Molecular and Cell Biology. 1245 words.

STRIDE is a software tool for secondary structure assignment from atomic resolution protein structures. It implements a knowledge-based algorithm that makes combined use of hydrogen bond...

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Atomic structure of a Ca-doped [001] tilt grain boundary in MgO

Yanfa Yan, Matthew F. Chisholm, Gerd Duscher and Stephen J. Pennycook.

in Microscopy

January 1998; p ublished online January 1998 .

Journal Article. Subjects: Biological Sciences. 0 words.

The atomic structure of a symmetric 24°[001] tilt grain boundary in MgO has been derived directly from high-resolution Z-contrast images obtained in a scanning transmission electron...

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Calculation of hydrodynamic properties of small nucleic acids from their atomic structure

M. X. Fernandes, A. Ortega, M. C. López Martínez and J. García de la Torre.

in Nucleic Acids Research

April 2002; p ublished online April 2002 .

Journal Article. Subjects: Chemistry; Biochemistry; Bioinformatics and Computational Biology; Genetics and Genomics; Molecular and Cell Biology. 4997 words.

Hydrodynamic properties (translational diffusion, sedimentation coefficients and correlation times) of short B-DNA oligonucleotides are calculated from the atomic-level structure using a...

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NMR structure of a parallel-stranded DNA duplex at atomic resolution

V. Rani Parvathy, Sukesh R. Bhaumik, Kandala V. R. Chary, Girjesh Govil, Keliang Liu, Frank B. Howard and H. Todd Miles.

in Nucleic Acids Research

April 2002; p ublished online April 2002 .

Journal Article. Subjects: Chemistry; Biochemistry; Bioinformatics and Computational Biology; Genetics and Genomics; Molecular and Cell Biology. 8385 words.

DNA dodecamers have been designed with two cytosines on each end and intervening A and T stretches, such that the oligomers have fully complementary A:T base pairs when aligned in the...

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Structure and dynamics of three-way DNA junctions: atomic force microscopy studies

Luda S. Shlyakhtenko, Vladimir N. Potaman, Richard R. Sinden, Alexander A. Gall and Yuri L. Lyubchenko.

in Nucleic Acids Research

September 2000; p ublished online September 2000 .

Journal Article. Subjects: Chemistry; Biochemistry; Bioinformatics and Computational Biology; Genetics and Genomics; Molecular and Cell Biology. 4024 words.

We have used atomic force microscopy (AFM) to study the conformation of three-way DNA junctions, intermediates of DNA replication and recombination. Immobile three-way junctions with one...

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