Effects of three‐dimensional structure on magnetotelluric sounding curves

Geophysics ◽  
1983 ◽  
Vol 48 (10) ◽  
pp. 1402-1405 ◽  
Author(s):  
Stephen K. Park ◽  
Arnold S. Orange ◽  
Theodore R. Madden
Keyword(s):  
Surface Layer ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
Regional Structure ◽  
One Dimensional ◽  
Three Dimensional Structure ◽  
Regional Effects ◽  
Yield Information ◽  
Geologic Map

Significant errors may result when applying one‐dimensional (1-D) or two‐dimensional (2-D) interpretation methods to magnetotelluric (MT) data collected in three‐dimensional (3-D) environments. Both depths and resistivities can be grossly incorrect if 1-D or 2-D methods are applied in a 3-D setting. We present examples of MT sounding curves generated using a 3-D modeling program (Madden and Park, 1982) and illustrate some interpretation pitfalls if 3-D effects are not considered. The 3-D effects discussed herein are attributed to a surface layer heterogeneity, and can be readily identified in MT data from a well‐designed MT survey. The MT survey must include stations chosen to yield information about regional structure. Alternatively, carefull examination of a geologic map will help the intepreter estimate the regional effects present in the data.

Assembled structures of tetrakis(biimidazole)dirhodium complexes hydrogen-bonded with common inorganic anions

2014 ◽  
Vol 70 (6) ◽  
pp. 1006-1019 ◽  
Author(s):  
Jin-Long ◽  
Kazuhiro Uemura ◽  
Masahiro Ebihara
Keyword(s):  
Hydrogen Bonding ◽  
Three Dimensional ◽  
Inorganic Anions ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
Discrete Structure ◽  
Torsion Angles ◽  
One Dimensional ◽  
Three Dimensional Structure ◽  
Dirhodium Complexes

Eight new structures of dirhodium complexes, each with four biimidazole (H2bim) ligands, were obtained: [Rh2(H2bim)4(H2O)2](NO3)4·4H2O (I), [Rh2(H2bim)4(H2O)2](ClO4)4·5H2O (II), [Rh2(H2bim)4(MeOH)2](ClO4)4(III), [Rh2(H2bim)4(DMF)2](BF4)4(IV), [Rh2(H2bim)4(Mepy)2](SiF6)2·8H2O (V), [{Rh2(H2bim)4(pz)}2(μ-pz)](SiF6)(ClO4)6·12.7H2O (VI), [{Rh2(H2bim)4(pz)}2(μ-pz)](ClO4)8·11.4H2O (VII) and [Rh2(H2bim)4(μ-pz)](SiF6)2·6H2O (VIII). The unbridged Rh—Rh bond distances range between 2.6313 (8) and 2.7052 (5) Å. The dirhodium units adopt a staggered conformation with torsion angles N—Rh—Rh—N of 37.6 (4)–48.98 (8)°. Various assembled structures were constructed by hydrogen bonding between the complexes and the anions: a discrete structure in (IV), one-dimensional structure in (II), two-dimensional structures in (I), (III), (VI), (VII) and (VIII) and a three-dimensional structure in (V).

scholarly journals catena-Poly[[[bis(1H-imidazole-κN3)zinc(II)]-μ2-imidazol-1-ido-κ2N:N′] nitrate]

2014 ◽  
Vol 70 (8) ◽  
pp. m298-m299
Author(s):  
Elumalai Govindhan ◽  
A. S. Ganeshraja ◽  
B. Bhavana ◽  
Krishnamoorthy Anbalagan ◽  
Arunachalam SubbiahPandi
Keyword(s):  
Coordination Polymer ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
Tetrahedral Geometry ◽  
One Dimensional ◽  
Three Dimensional Structure

The title compound, {[Zn(C3H3N2)(C3H4N2)2]NO3}n, is a one-dimensional coordination polymer along [01-1] with the ZnIIatom coordinating to four imidazole/imidazolide rings. The ZnIIatom has a regular tetrahedral geometry with the planes of the two monodentate imidazole rings inclined to one another by 87.94 (17)°, while the planes of the bridging imidazolide rings are inclined to one another by 39.06 (17)°. In the crystal, the chains are linkedviabifurcated N—H...(O,O) hydrogen bonds, forming sheets parallel to (001). These two-dimensional networks are linkedviaC—H...O hydrogen bonds and a C—H...π interaction, forming a three-dimensional structure.

Three-Dimensional Structure of Cloned T3 Connector Protein at 1.6nm Resolution

1990 ◽  
Vol 48 (1) ◽  
pp. 282-283
Author(s):  
José L. Carrascosa ◽  
José M. Valpuesta ◽  
Hisao Fujisawa
Keyword(s):  
Dna Sequences ◽  
Expression Vector ◽  
Three Dimensional ◽  
Deae Cellulose ◽  
Dna Packaging ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
Freezing And Thawing ◽  
Three Dimensional Structure ◽  
Dimensional Reconstruction

The head to tail connector of bacteriophages plays a fundamental role in the assembly of viral heads and DNA packaging. In spite of the absence of sequence homology, the structure of connectors from different viruses (T4, Ø29, T3, P22, etc) share common morphological features, that are most clearly revealed in their three-dimensional structure. We have studied the three-dimensional reconstruction of the connector protein from phage T3 (gp 8) from tilted view of two dimensional crystals obtained from this protein after cloning and purification.DNA sequences including gene 8 from phage T3 were cloned, into Bam Hl-Eco Rl sites down stream of lambda promotor PL, in the expression vector pNT45 under the control of cI857. E R204 (pNT89) cells were incubated at 42°C for 2h, harvested and resuspended in 20 mM Tris HC1 (pH 7.4), 7mM 2 mercaptoethanol, ImM EDTA. The cells were lysed by freezing and thawing in the presence of lysozyme (lmg/ml) and ligthly sonicated. The low speed supernatant was precipitated by ammonium sulfate (60% saturated) and dissolved in the original buffer to be subjected to gel nitration through Sepharose 6B, followed by phosphocellulose colum (Pll) and DEAE cellulose colum (DE52). Purified gp8 appeared at 0.3M NaCl and formed crystals when its concentration increased above 1.5 mg/ml.

scholarly journals Two-Dimensional Crystallization on Lipid Monolayers and Three-Dimensional Structure of Sticholysin II, a Cytolysin from the Sea Anemone Stichodactyla helianthus

2000 ◽  
Vol 78 (6) ◽  
pp. 3186-3194 ◽  
Author(s):  
Jaime Martín-Benito ◽  
Francisco Gavilanes ◽  
Vivian de los Ríos ◽  
José M. Mancheño ◽  
José J. Fernández ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Sea Anemone ◽  
Dimensional Structure ◽  
Lipid Monolayers ◽  
Two Dimensional ◽  
Three Dimensional Structure
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