Analyzing the instability dynamics of spherical complex astroclouds in a magnetized meanfluidic fabric

2020 ◽  
Vol 27 (2) ◽  
pp. 022902 ◽  
Author(s):  
Dhrubajit Kalita ◽  
Pralay Kumar Karmakar
Keyword(s):  
Spherical Complex

scholarly journals Differential and integral cross sections for electron elastic scattering by ammonia for incident energies ranging from 10 eV to 20 keV

2018 ◽  
Vol 64 (5) ◽  
pp. 498
Author(s):  
Hocine Aouchiche
Keyword(s):  
Experimental Data ◽  
Elastic Scattering ◽  
Cross Sections ◽  
Optical Potential ◽  
Large Set ◽  
Quantum Calculation ◽  
Hartree Fock ◽  
Spherical Complex ◽  
Static Part ◽  
Model Point

Differential and integral cross sections for elastic scattering of electron by NH3 molecule are investigated for the energy ranging from 10 eV to 20 keV.  The calculations are carried out in the framework of partial wave formalism describing the target molecule by means of one center molecular Hartree-Fock functions.  A spherical complex optical potential used includes a static part – obtained here numerically from quantum calculation – and fine effects like correlation, polarization and exchange potentials. The results obtained in this model point out clearly the role played by the exchange and the correlation-polarization contributions in particular at lower scattering angles and lower incident energies. Both differential and integral cross sections obtained are compared with a large set of experimental data available in the literature and well agreement is found throughout the scattering angles and whole energy range investigated here.

Study of The Tool Path Generation Method of an Ultra-Precision Spherical Complex Surface Based on a Five-Axis Machine Tool

2021 ◽  
Author(s):  
Tianji Xing ◽  
Xuesen Zhao ◽  
Zhipeng Cui ◽  
Rongkai Tan ◽  
Tao Sun
Keyword(s):  
Surface Roughness ◽  
Tool Path ◽  
Spherical Surface ◽  
Tool Path Generation ◽  
Path Generation ◽  
Tool Paths ◽  
Spherical Surfaces ◽  
Spherical Complex ◽  
Ultra Precision ◽  
Five Axis

Abstract The improvement of ultra-precision machining technology has significantly boosted the demand for the surface quality and surface accuracy of the workpieces to be machined. However, the geometric shapes of workpiece surfaces cannot be adequately manufactured with simple plane, cylindrical, or spherical surfaces because of their different applications in various fields. In this research, a method was proposed to generate tool paths for the machining of complex spherical surfaces based on an ultra-precise five-axis turning and milling machine with a C-Y-Z-X-B structure. Through the proposed tool path generation method, ultra-precise complex spherical surface machining was achieved. First, the complex spherical surface model was modeled and calculated, and then it was combined with the designed model to generate the tool path. Then the tool paths were generated with a numerically controlled (NC) program. Based on an ultra-precision three-coordinate measuring instrument and a white light interferometer, the machining accuracy of a workpiece surface was characterized, and t[1]he effectiveness of the provided tool path generation method was verified. The surface roughness of the machined workpiece was less than 90 nm. Furthermore, the surface roughness within the spherical region appeared to be less than 30 nm. The presented tool path generation method in this research produced ultra-precision spherical complex surfaces. The method could be applied to complex spherical surfaces with other characteristics.

Electron impact total and ionization cross sections for Sr, Y, Ru, Pd, and Ag atoms

2013 ◽  
Vol 91 (9) ◽  
pp. 744-750 ◽  
Author(s):  
Dhanoj Gupta ◽  
Rahla Naghma ◽  
Bobby Antony
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Optical Potential ◽  
Atomic Orbital ◽  
Atomic Charge ◽  
Ionization Cross ◽  
Charge Densities ◽  
Hartree Fock ◽  
Spherical Complex ◽  
Ionization Cross Sections

Calculation of electron impact total and ionization cross sections for Sr, Y, Ru, Pd, and Ag atoms were performed using spherical complex optical potential and complex scattering potential-ionization contribution methods. The complex optical potential model is formulated from the target parameters and the atomic charge density. The spherical charge densities are in turn derived from the Roothaan–Hartree–Fock wavefunctions defining the atomic orbital of the target. In the present study cross sections are computed in the energy range from ionization threshold to 2000 eV. The results obtained are compared with other theories and measurements wherever available and were found to be quite consistent and uniform. In general, present data show an overall reasonable agreement with other results. Dependence of total cross sections on the number of target electrons and peak of ionization cross section on target parameters were also found to be consistent with previous observations.

A Self-Assembled Spherical Complex Displaying a Gangliosidic Glycan Cluster Capable of Interacting with Amyloidogenic Proteins

2015 ◽  
Vol 127 (29) ◽  
pp. 8555-8559 ◽  
Author(s):  
Sota Sato ◽  
Yutaka Yoshimasa ◽  
Daishi Fujita ◽  
Maho Yagi-Utsumi ◽  
Takumi Yamaguchi ◽  
...  
Keyword(s):  
Amyloidogenic Proteins ◽  
Spherical Complex ◽  
Self Assembled

scholarly journals Plane wave formulas for spherical, complex and symplectic harmonics

2017 ◽  
Vol 222 ◽  
pp. 110-131
Author(s):  
H. De Bie ◽  
F. Sommen ◽  
M. Wutzig
Keyword(s):  
Plane Wave ◽  
Spherical Complex

scholarly journals Antiholomorphic involutions of spherical complex spaces

2008 ◽  
Vol 136 (05) ◽  
pp. 1649-1658
Author(s):  
Dmitri Akhiezer ◽  
Annett Püttmann
Keyword(s):  
Complex Spaces ◽  
Spherical Complex

On ‘basic’ radii of simple and complex ions and the repulsion energy of ionic crystals

1977 ◽  
Vol 356 (1684) ◽  
pp. 115-134 ◽  
Keyword(s):  
Alkali Metal ◽  
Current Literature ◽  
Ionic Crystals ◽  
Halide Ions ◽  
Complex Ions ◽  
Energy Calculations ◽  
Repulsion Energy ◽  
Lattice Potential ◽  
Spherical Complex ◽  
Lattice Energies

This paper proposes a method in which minimization criteria are employed, within the framework of the Huggins and Mayer method for the calculation of repulsion energy in ionic crystals, to establish ‘basic’ radii for both simple and complex spherical ions. With radii so generated repulsion energies (and hence total lattice energies) can be obtained for salts containing spherical ions. The paper initially establishes ‘basic’ radii for alkali metal and halide ions using more recent data than those used originally by Huggins. A description is then given of how we propose to employ the method for salts having spherical complex ions. The examples of potassium, rubidium, caesium, thallium and ammonium hexachloroplatinates are chosen and values for ∆ H f Ɵ (PtCl 2¯ 6 ) (g) and ∆ H Ɵ hyd (PtCl 2¯ 6 ) (g) are assigned on the basis of the repulsion, and hence the total lattice potential, energies calculated for these five salts. Recent suspicions regarding the accuracy and reliability of the repulsion energy calculations for potassium hexachloroplatinate described in the current literature are re-examined and found to be justified.

Simulation of Metal–Ligand Self-Assembly into Spherical Complex M6L8

2012 ◽  
Vol 134 (35) ◽  
pp. 14401-14407 ◽  
Author(s):  
Makoto Yoneya ◽  
Tomohiko Yamaguchi ◽  
Sota Sato ◽  
Makoto Fujita
Keyword(s):  
Self Assembly ◽  
Spherical Complex ◽  
Metal Ligand
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