scholarly journals Quantification of joint roughness using various empirical relations between JRC and roughness parameters

2021 ◽  
Vol 861 (5) ◽  
pp. 052052
Author(s):  
Mawuko Luke Yaw Ankah ◽  
Desmond Talamwin Sunkpal ◽  
Xiaokang Zhao
Keyword(s):  
Roughness Parameters ◽  
Joint Roughness ◽  
Empirical Relations

Determination of Joint Roughness Coefficients Using Roughness Parameters

2014 ◽  
Vol 47 (6) ◽  
pp. 2061-2073 ◽  
Author(s):  
Hyun-Sic Jang ◽  
Seong-Seung Kang ◽  
Bo-An Jang
Keyword(s):  
Roughness Parameters ◽  
Joint Roughness

scholarly journals Empirical relations among scattering, roughness parameters, and thickness of aluminum films

1993 ◽  
Vol 32 (31) ◽  
pp. 6341 ◽  
Author(s):  
J. I. Larruquert ◽  
J. A. Méndez ◽  
J. A. Aznárez
Keyword(s):  
Roughness Parameters ◽  
Aluminum Films ◽  
Empirical Relations

Legal Form of Joint-stock Companies and Corporate Performance in Russia

2007 ◽  
pp. 112-123
Author(s):  
I. Iwasaki
Keyword(s):  
Organizational Behavior ◽  
Organizational Form ◽  
Institutional Setting ◽  
Federal Law ◽  
Legal Form ◽  
Empirical Relations ◽  
Organizational Choice ◽  
Legal Forms ◽  
Joint Enterprise ◽  
Enterprise Survey

Basing on the results of a Russia-Japan joint enterprise survey conducted in 2005, the paper examines the legal-organizational form of joint-stock companies (JSCs) in Russia. The Federal Law on joint-stock companies stipulates that JSCs should be established in one of the two different legal forms, namely "open" or "closed" companies that provide a unique institutional setting for Russian firms from the viewpoint of their corporate governance. The paper deliberates the determinants of organizational choice between these two legal forms. Then it examines empirical relations between the legal forms of JSCs and their organizational behavior.

scholarly journals Observed Relations Between Physical Properties and MK Classification as Functions of Metal Abundance for F5-K4 Stars

1976 ◽  
Vol 72 ◽  
pp. 75-78
Author(s):  
M. Grenon
Keyword(s):  
Physical Properties ◽  
Spectral Range ◽  
Spectral Type ◽  
Photometric System ◽  
Luminosity Class ◽  
Empirical Relations ◽  
Metal Abundance ◽  
Systematic Effects ◽  
The Absolute ◽  
Absolute Magnitudes

The Geneva photometric system has been calibrated in terms of [M/H], θeff, Mv in the spectral range F5 to K4. As the spectral type is a datum generally available, we derive empirical relations showing the coupling of θeff and [M/H] at given spectral type and luminosity class. Similar relations are offered for the absolute magnitudes and provide a more accurate means for deriving spectroscopic parallaxes. Systematic effects on the estimation of the luminosity class are also shown.

scholarly journals Primary- and secondary-structural analysis of a unique prokaryotic metallothionein from a Synechococcus sp. cyanobacterium

1988 ◽  
Vol 251 (3) ◽  
pp. 691-699 ◽  
Author(s):  
R W Olafson ◽  
W D McCubbin ◽  
C M Kay
Keyword(s):  
Amino Acid ◽  
Metal Binding ◽  
Helical Structure ◽  
Basic Amino Acid ◽  
Cysteine Residues ◽  
Amino Acid Residues ◽  
C Terminus ◽  
Empirical Relations ◽  
Heavy Metal Binding ◽  
Synechococcus Sp

Biochemical and physiological studies of Synechococcus cyanobacteria have indicated the presence of a low-Mr heavy-metal-binding protein with marked similarity to eukaryotic metallothioneins (MTs). We report here the characterization of a Synechococcus prokaryotic MT isolated by gel-permeation and reverse-phase chromatography. The large number of variants of this molecule found during chromatographic separation could not be attributed to the presence of major isoproteins as assessed by amino acid analysis and amino acid sequencing of isoforms. Two of the latter were shown to have identical primary structures that differed substantially from the well-described eukaryotic MTs. In addition to six long-chain aliphatic residues, two aromatic residues were found adjacent to one another near the centre of the molecule, making this the most hydrophobic MT to be described. Other unusual features included a pair of histidine residues located in repeating Gly-His-Thr-Gly sequences near the C-terminus and a complete lack of association of hydroxylated residues with cysteine residues, as is commonly found in eukaryotes. Similarly, aside from a single lysine residue, no basic amino acid residues were found adjacent to cysteine residues in the sequence. Most importantly, sequence alignment analyses with mammalian, invertebrate and fungal MT sequences showed no statistically significant homology aside from the presence of Cys-Xaa-Cys structures common to all MTs. On the other hand, like other MTs, the prokaryotic molecule appears to be free of alpha-helical structure but has a considerable amount of beta-structure, as predicted by both c.d. measurements and the Chou & Fasman empirical relations. Considered together, these data suggested that some similarity between the metal-thiolate clusters of the prokaryote and eukaryote MTs may exist.

Back-analysis of Donghekou landslide using improved DDA considering joint roughness degradation

Landslides ◽  
2021 ◽  
Author(s):  
Jinmei Wang ◽  
Yingbin Zhang ◽  
Yanlong Chen ◽  
Qingdong Wang ◽  
Chenlin Xiang ◽  
...  
Keyword(s):  
Back Analysis ◽  
Joint Roughness

scholarly journals Assessing the Functional Properties of TiZr Nanotubular Structures for Biomedical Applications, through Nano-Scratch Tests and Adhesion Force Maps

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 900
Author(s):  
Maria Vardaki ◽  
Aida Pantazi ◽  
Ioana Demetrescu ◽  
Marius Enachescu
Keyword(s):  
Surface Roughness ◽  
Functional Properties ◽  
Bacterial Adhesion ◽  
Biomedical Applications ◽  
Adhesion Force ◽  
Roughness Parameters ◽  
Force Microscopy ◽  
Atomic Force ◽  
The Mean ◽  
Scratch Tests

In this work we present the results of a functional properties assessment via Atomic Force Microscopy (AFM)-based surface morphology, surface roughness, nano-scratch tests and adhesion force maps of TiZr-based nanotubular structures. The nanostructures have been electrochemically prepared in a glycerin + 15 vol.% H2O + 0.2 M NH4F electrolyte. The AFM topography images confirmed the successful preparation of the nanotubular coatings. The Root Mean Square (RMS) and average (Ra) roughness parameters increased after anodizing, while the mean adhesion force value decreased. The prepared nanocoatings exhibited a smaller mean scratch hardness value compared to the un-coated TiZr. However, the mean hardness (H) values of the coatings highlight their potential in having reliable mechanical resistances, which along with the significant increase of the surface roughness parameters, which could help in improving the osseointegration, and also with the important decrease of the mean adhesion force, which could lead to a reduction in bacterial adhesion, are providing the nanostructures with a great potential to be used as a better alternative for Ti implants in dentistry.

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