A new family of 1D, 2D and 3D frameworks aggregated from Ni5, Ni4 and Ni7 building units: synthesis, structure, and magnetism

2016 ◽  
Vol 45 (22) ◽  
pp. 9267-9278 ◽  
Author(s):  
Ya-Hui Liu ◽  
Li-Ping Lu ◽  
Miao-Li Zhu ◽  
Si-Si Feng ◽  
Feng Su
Keyword(s):  
Tricarboxylic Acid ◽  
Ferromagnetic Coupling ◽  
Magnetic Studies ◽  
3D Structures ◽  
New Family ◽  
Magnetic Chain ◽  
2D And 3D

Three polynuclear nickel(ii) complexes with 1D, 2D and 3D structures are controlled by carboxylate bridges of biphenyl-3,4′,5-tricarboxylic acid. Magnetic studies reveal that the polymers have ferromagnetic coupling features for 1 and 2 and an alternating magnetic chain behavior for 3.

Ecotoxicity prediction by adaptive fuzzy partitioning: comparing descriptors computed on 2D and 3D structures

2006 ◽  
Vol 17 (2) ◽  
pp. 225-251 ◽  
Author(s):  
N. Piclin ◽  
M. Pintore ◽  
C. Wechman ◽  
A. Roncaglioni ◽  
E. Benfenati ◽  
...  
Keyword(s):  
3D Structures ◽  
Adaptive Fuzzy ◽  
Fuzzy Partitioning ◽  
2D And 3D

scholarly journals On the structural stability and optical properties of germanium-based schwarzites: a density functional theory investigation

2020 ◽  
Vol 22 (28) ◽  
pp. 16286-16293
Author(s):  
Raphael M. Tromer ◽  
Levi C. Felix ◽  
Cristiano F. Woellner ◽  
Douglas S. Galvao
Keyword(s):  
Density Functional Theory ◽  
Optical Properties ◽  
Structural Stability ◽  
Density Functional ◽  
Functional Theory ◽  
3D Structures ◽  
Carbon Allotropes ◽  
2D And 3D

Since graphene was synthesized the interest in building new 2D and 3D structures based on carbon allotropes has been growing every day.

RiboVision suite for visualization and analysis of ribosomes

2014 ◽  
Vol 169 ◽  
pp. 195-207 ◽  
Author(s):  
Chad R. Bernier ◽  
Anton S. Petrov ◽  
Chris C. Waterbury ◽  
James Jett ◽  
Fengbo Li ◽  
...  
Keyword(s):  
Molecular Interactions ◽  
Ribosomal Proteins ◽  
Secondary Structures ◽  
Macromolecular Complex ◽  
Analysis Tool ◽  
Complex Data ◽  
Helical Structures ◽  
Haloarcula Marismortui ◽  
3D Structures ◽  
2D And 3D

RiboVision is a visualization and analysis tool for the simultaneous display of multiple layers of diverse information on primary (1D), secondary (2D), and three-dimensional (3D) structures of ribosomes. The ribosome is a macromolecular complex containing ribosomal RNA and ribosomal proteins and is a key component of life responsible for the synthesis of proteins in all living organisms. RiboVision is intended for rapid retrieval, analysis, filtering, and display of a variety of ribosomal data. Preloaded information includes 1D, 2D, and 3D structures augmented by base-pairing, base-stacking, and other molecular interactions. RiboVision is preloaded with rRNA secondary structures, rRNA domains and helical structures, phylogeny, crystallographic thermal factors,etc.RiboVision contains structures of ribosomal proteins and a database of their molecular interactions with rRNA. RiboVision contains preloaded structures and data for two bacterial ribosomes (Thermus thermophilusandEscherichia coli), one archaeal ribosome (Haloarcula marismortui), and three eukaryotic ribosomes (Saccharomyces cerevisiae,Drosophila melanogaster, andHomo sapiens). RiboVision revealed several major discrepancies between the 2D and 3D structures of the rRNAs of the small and large subunits (SSU and LSU). Revised structures mapped with a variety of data are available in RiboVision as well as in a public gallery (http://apollo.chemistry.gatech.edu/RibosomeGallery). RiboVision is designed to allow users to distill complex data quickly and to easily generate publication-quality images of data mapped onto secondary structures. Users can readily import and analyze their own data in the context of other work. This package allows users to import and map data from CSV files directly onto 1D, 2D, and 3D levels of structure. RiboVision has features in rough analogy with web-based map services capable of seamlessly switching the type of data displayed and the resolution or magnification of the display. RiboVision is available at http://apollo.chemistry.gatech.edu/RiboVision.

scholarly journals FAMILIES OF SCROLL GRID ATTRACTORS

2002 ◽  
Vol 12 (01) ◽  
pp. 23-41 ◽  
Author(s):  
MÜŞTAK E. YALÇIN ◽  
JOHAN A. K. SUYKENS ◽  
JOOS VANDEWALLE ◽  
SERDAR ÖZOĞUZ
Keyword(s):  
State Space ◽  
Equilibrium Points ◽  
Strange Attractors ◽  
Current Feedback ◽  
Nonlinear Characteristics ◽  
State Variable ◽  
New Family ◽  
2D And 3D

In this paper a new family of scroll grid attractors is presented. These families are classified into three called 1D-, 2D- and 3D-grid scroll attractors depending on the location of the equilibrium points in state space. The scrolls generated from 1D-, 2D- and 3D-grid scroll attractors are located around the equilibrium points on a line, on a plane or in 3D, respectively. Due to the generalization of the nonlinear characteristics, it is possible to increase the number of scrolls in all state variable directions. A number of strange attractors from the scroll grid attractor families are presented. They have been experimentally verified using current feedback opamps. Also Lur'e representations are given for the scroll grid attractor families.

Engineering Anisotropic 2D and 3D Structures for Tendon Repair and Regeneration

2015 ◽  
pp. 225-242 ◽  
Author(s):  
Alex Lomas ◽  
Andrew English ◽  
Manus Biggs ◽  
Abhay Pandit ◽  
Dimitrios I. Zeugolis
Keyword(s):  
Tendon Repair ◽  
3D Structures ◽  
2D And 3D

scholarly journals Reticular Chemistry: Molecular Precision in Infinite 2D and 3D

2019 ◽  
Vol 03 (01) ◽  
pp. 66-83 ◽  
Author(s):  
Omar M. Yaghi
Keyword(s):  
Chemical Stability ◽  
Carbon Capture ◽  
Metal Organic Frameworks ◽  
Water Harvesting ◽  
High Porosity ◽  
Covalent Organic Frameworks ◽  
3D Structures ◽  
Metal Organic ◽  
2D And 3D ◽  
Thermal And Chemical Stability

The long-standing dream of scientists to be able to link molecules together into crystalline, extended (infinite) 2D and 3D structures is now realized by the establishment of reticular chemistry through the discovery and development of metal-organic frameworks and covalent organic frameworks. The architectural, thermal, and chemical stability of such frameworks allowed study of their ultra-high porosity, reactivity and many applications including carbon capture and conversion to fuels, and water harvesting from desert air.

scholarly journals Crystallography of 2D and 3D structures in liquid crystal amphiphiles and nanocomposites

2008 ◽  
Vol 64 (a1) ◽  
pp. C31-C32
Author(s):  
G. Ungar ◽  
X.B. Zeng ◽  
F. Liu ◽  
C. Tschierske ◽  
M. Prehm ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
3D Structures ◽  
2D And 3D

scholarly journals Structural analysis of leucine, lysine and tryptophan mitochondrial tRNA of nesting turtles Caretta caretta (Testudines: Chelonioidea) in the Colombian Caribbean

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9204
Author(s):  
Harvey Infante-Rojas ◽  
Leonardo Marino-Ramirez ◽  
Javier Hernández-Fernández
Keyword(s):  
Functional Properties ◽  
Structural Changes ◽  
Protein Biosynthesis ◽  
Variable Region ◽  
Caretta Caretta ◽  
Nucleotide Position ◽  
Mitochondrial Trna ◽  
3D Structures ◽  
Mitochondrial Transfer ◽  
2D And 3D

The understanding of the functional properties of mitochondrial transfer RNA (mt tRNAs) depend on the knowledge of its structure. tRNA acts as an interface between polynucleotides and polypeptides thus, they are key molecules in protein biosynthesis. The tRNA molecule has a functional design and, given its importance in the translation of mitochondrial genes, it is plausible that modifications of the structure can affect the synthesis of proteins and the functional properties of the mitochondria. In a previous work, the mitochondrial genome of an individual of the nesting Caretta caretta of the Colombian Caribbean was obtained, where specific mutations were identified in the only tRNALeu (CUN), tRNATrp and tRNALys genes. In order to analyze the effect of these mutations on these three mt tRNAs, the prediction of 2D and 3D structures was performed. Genes were sequenced in 11 nesting loggerhead turtles from the Colombian Caribbean. Two-dimensional structures were inferred using the ARWEN program, and three-dimensional structures were obtained with the RNA Composer 3D program. Two polymorphisms were identified in tRNATrp and another one was located in tRNALys, both specific to C. caretta. The thymine substitution in nucleotide position 14 of tRNATrp could constitute an endemic polymorphism of the nesting colony of the Colombian Caribbean. Two 2D and three 3D patterns were obtained for tRNATrp. In the case of tRNALys and tRNALeu 2D and 3D structures were obtained respectively, which showed compliance to canonical structures, with 4 bp in the D-arm, 4–5 bp in the T-arm, and 5 bp in the anticodon arm. Moderate deviations were found, such as a change in the number of nucleotides, elongation in loops or stems and non-Watson–Crick base pairing: adenine–adenine in stem D of tRNATrp, uracil–uracil and adenine–cytosine in the acceptor arm of the tRNALys and cytosine–cytosine in the anticodon stem of the tRNALeu. In addition, distortions or lack of typical interactions in 3D structures gave them unique characteristics. According to the size of the variable region (4–5 nt), the three analyzed tRNAs belong to class I. The interactions in the three studied tRNAs occur mainly between D loop—variable region, and between spacer bases—variable region, which classifies them as tRNA of typology II. The polymorphisms and structural changes described can, apparently, be post-transcriptionally stabilized. It will be crucial to perform studies at the population and functional levels to elucidate the synthetic pathways affected by these genes. This article analyses for the first time the 1D, 2D and 3D structures of the mitochondrial tRNALys, tRNATrp and tRNALeu in the loggerhead turtle.

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