Quantum Topology and Computer Simulation of Confined Hydrogen Atom Inside Spherical-Form Gap

2004 ◽  
pp. 531-538 ◽  
Author(s):  
S. A. Beznosyuk ◽  
D. A. Mezentsev ◽  
M. S. Zhukovsky ◽  
T. M. Zhukovsky
Keyword(s):  
Computer Simulation ◽  
Hydrogen Atom ◽  
Spherical Form ◽  
Quantum Topology

scholarly journals The Mobility of a Hydrogen Atom on an Icy Mantle

1996 ◽  
Vol 150 ◽  
pp. 469-472
Author(s):  
Koichi Masuda
Keyword(s):  
Molecular Dynamics ◽  
Computer Simulation ◽  
Hydrogen Atom ◽  
Molecular Clouds ◽  
Dynamical Behavior ◽  
Large Region ◽  
Hydrogen Atoms ◽  
Water Ice ◽  
Dark Clouds

AbstractIt is probable that most molecules in space are formed on the surface of small solid grains in dense molecular clouds. Such grains have generally accumulated icy mantles inside dark clouds. We have investigated the dynamical behavior of a hydrogen atom impinging on the mantle consisting of amorphous water ice based on an MD (Molecular Dynamics) computer simulation to estimate the structure of the resulting grains with the icy mantles. We have found that the hydrogen atoms impinging on the surface of amorphous water ice were easily trapped in a dent of the surface and, consequently they are fixed there firmly. Our results, which neglect tunneling, suggest that the migration of hydrogen atoms over a large region of the surface of icy grains may be less common than is often assumed.

scholarly journals Plastic Flow Verification in a Tool Cavity for Production of Test Sample for Wettability Solders Measurement

2020 ◽  
Vol 71 (1) ◽  
pp. 107-112
Author(s):  
Maria Kapustova ◽  
Roman Kolenak ◽  
Robert Sobota ◽  
Jozef Bilik ◽  
Vladimir Simna ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Plastic Flow ◽  
Structural Design ◽  
Substrate Surface ◽  
Fem Analysis ◽  
Test Sample ◽  
Simulation Software ◽  
Small Sphere ◽  
Spherical Form ◽  
Shaping Tool

The paper describes the structural design, simulation and proper manufacture of a tool for manufacturing of test samples in spherical form. This shape is essential for an innovative assessment of solder wettability, since the small sphere by its ideal shape represents the total non-wettability of substrate surface. In order to verify the design of the shaping tool, a simulation software, type Deform was used, which allowed the FEM analysis of plastic flow in the tool cavity. Just after successful computer simulation, a shaping tool was designed and then manufactured in laboratory conditions, thus the fabrication of test samples in spherical form was successfully tested.

Characterization of Modulated Structure Through Structure Images and their Computer Simulation

1990 ◽  
Vol 48 (1) ◽  
pp. 70-71
Author(s):  
Kiyomichi Nakai ◽  
Yusuke Isobe ◽  
Chiken Kinoshita ◽  
Kazutoshi Shinohara
Keyword(s):  
Computer Simulation ◽  
High Resolution ◽  
Spherical Aberration ◽  
High Resolution Electron Microscopy ◽  
Basic Mechanism ◽  
Objective Lens ◽  
Specimen Thickness ◽  
Transmitted Beam ◽  
Modulated Structure ◽  
Resolution Electron

Induced spinodal decomposition under electron irradiation in a Ni-Au alloy has been investigated with respect to its basic mechanism and confirmed to be caused by the relaxation of coherent strain associated with modulated structure. Modulation of white-dots on structure images of modulated structure due to high-resolution electron microscopy is reduced with irradiation. In this paper the atom arrangement of the modulated structure is confirmed with computer simulation on the structure images, and the relaxation of the coherent strain is concluded to be due to the reduction of phase-modulation.Structure images of three-dimensional modulated structure along <100> were taken with the JEM-4000EX high-resolution electron microscope at the HVEM Laboratory, Kyushu University. The transmitted beam and four 200 reflections with their satellites from the modulated structure in an fee Ni-30.0at%Au alloy under illumination of 400keV electrons were used for the structure images under a condition of the spherical aberration constant of the objective lens, Cs = 1mm, the divergence of the beam, α = 3 × 10-4 rad, underfocus, Δf ≃ -50nm and specimen thickness, t ≃ 15nm. The CIHRTEM code was used for the simulation of the structure image.

Computer simulation of a dental practice using therapists

1972 ◽  
Vol 36 (6) ◽  
pp. 35-39
Author(s):  
JB Dilworth ◽  
WJ Pelton
Keyword(s):  
Computer Simulation ◽  
Dental Practice

Averting robo-bees: why free-flying robotic bees are a bad idea

2019 ◽  
Vol 3 (6) ◽  
pp. 723-729
Author(s):  
Roslyn Gleadow ◽  
Jim Hanan ◽  
Alan Dorin
Keyword(s):  
Climate Change ◽  
Computer Simulation ◽  
Food Security ◽  
European Countries ◽  
Plant Interactions ◽  
Plant Insect Interactions ◽  
Native Habitat ◽  
Insect Pollinators ◽  
Insect Interactions

Food security and the sustainability of native ecosystems depends on plant-insect interactions in countless ways. Recently reported rapid and immense declines in insect numbers due to climate change, the use of pesticides and herbicides, the introduction of agricultural monocultures, and the destruction of insect native habitat, are all potential contributors to this grave situation. Some researchers are working towards a future where natural insect pollinators might be replaced with free-flying robotic bees, an ecologically problematic proposal. We argue instead that creating environments that are friendly to bees and exploring the use of other species for pollination and bio-control, particularly in non-European countries, are more ecologically sound approaches. The computer simulation of insect-plant interactions is a far more measured application of technology that may assist in managing, or averting, ‘Insect Armageddon' from both practical and ethical viewpoints.

Computer simulation of the far infrared collision induced absorption spectra of gaseous CO2

1998 ◽  
Vol 93 (6) ◽  
pp. 1007-1016 ◽  
Author(s):  
MARCIN GRUSZKA ◽  
ALEKSANDRA BORYSOW
Keyword(s):  
Computer Simulation ◽  
Absorption Spectra ◽  
Far Infrared ◽  
Induced Absorption
Sign in / Sign up

Export Citation Format

Share Document