Ionic conduction in sodium azide under high pressure: Experimental and theoretical approaches

2018 ◽  
Vol 112 (17) ◽  
pp. 173903 ◽  
Author(s):  
Qinglin Wang ◽  
Yanzhang Ma ◽  
Dandan Sang ◽  
Xiaoli Wang ◽  
Cailong Liu ◽  
...  
Keyword(s):  
High Pressure ◽  
Sodium Azide ◽  
Ionic Conduction ◽  
Theoretical Approaches

Enhanced ionic conduction and disproportionation in pure CuCl at high pressure

1981 ◽  
Vol 38 (2) ◽  
pp. 83-88 ◽  
Author(s):  
B. Batlogg ◽  
J.P. Remeika ◽  
R.G. Maines
Keyword(s):  
High Pressure ◽  
Ionic Conduction

Pipeline Shore Approach Design: Case Study

2011 ◽  
Author(s):  
Scott Y. McMaster ◽  
Dean R. Campbell ◽  
Eric Jas
Keyword(s):  
High Pressure ◽  
Best Practice ◽  
Large Diameter ◽  
Cost Effective ◽  
Careful Consideration ◽  
Theoretical Approaches ◽  
Heritage Site ◽  
External Impact ◽  
Offshore Industry ◽  
Design Case Study

An insight is provided into the design of a large diameter high pressure gas pipeline shore approach for an LNG project off the coast of North Western Australia. The shore approach is located in a challenging and congested area, within one of Australia’s busiest ports. In close proximity to the pipeline route are two existing high pressure gas pipelines, several major shipping channels, a large spoil ground and environmentally sensitive coral reefs. Throughout the design process, careful consideration has been given to environmental and heritage constraints. In the case of the pipeline shore approach, prevention of coral mortality due to dredging induced turbidity has been a key priority. Ensuring the preservation of the heritage site adjacent to the landfall site has also been a major consideration. This paper describes the numerous challenges faced in designing the pipeline shore approach. A description of the design processes used to develop the secondary stabilisation and accidental external impact designs is provided. The unique methods employed to install the trunkline system across an operating shipping channel are also described. The information provided in this paper can be applied to the design and development of numerous pipeline shore approaches in the future. Individuals interested in pipeline secondary stabilisation, impact protection, shore crossings and pipelay techniques will also find this paper of value. This paper contributes to the technical knowledge base of the offshore industry by displaying the benefits of effectively combining relevant theoretical approaches with state of the art physical model testing methods and best practice installation techniques. This work demonstrates how innovative design practices can be successfully applied to produce a safe, cost effective and robust pipeline shore approach design in a challenging area.

scholarly journals Investigation on the Strain Distribution in Tube High-Pressure Shearing

Metals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1117
Author(s):  
Jiajie Meng ◽  
Zheng Li ◽  
Ying Liu ◽  
Yebin Zhu ◽  
Shun Wang ◽  
...  
Keyword(s):  
High Pressure ◽  
Strain Distribution ◽  
Cone Angle ◽  
Strain Hardening Exponent ◽  
Theoretical Approaches ◽  
Geometric Factors ◽  
Dead Metal Zone ◽  
Deformation Inhomogeneity ◽  
Advantageous Position ◽  
Wedge Effect

The Finite-element method (FEM) and experiments were used to investigate the geometric factors and material parameter on the strain distribution during tube high-pressure shearing (t-HPS). The results show that t-HPS could be realized successfully either by pressurizing on both ends of the tube, or by pressurizing using the wedge effect; and in both cases, the “dead metal zone” could be found at both ends of the tube. The grain size distribution from the experiment confirmed this strain distribution feature. In the case of t-HPS pressurized using the wedge effect, the half cone angle has little effect on the strain distribution. Decreasing the strain-hardening exponent leads to increased deformation inhomogeneity in both the ideal t-HPS described by theoretical equations and the close to practical t-HPS described by FEM. This feature of t-HPS stands out from other SPD processes like HPT, and makes practical t-HPS behavior more predictable using the analytical formation than any other SPD processes, and places it an advantageous position in understanding the basics of deformation physics through the coupling between practical experiments and theoretical approaches.

Pressure induced semiconductor–metal phase transition in GaAs: experimental and theoretical approaches

RSC Advances ◽  
2016 ◽  
Vol 6 (12) ◽  
pp. 10144-10149 ◽  
Author(s):  
Jia Wang ◽  
Baojia Wu ◽  
Guozhao Zhang ◽  
Lianhua Tian ◽  
Guangrui Gu ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
First Principles ◽  
Metal Phase ◽  
First Principles Calculations ◽  
Electrical Measurements ◽  
Theoretical Approaches ◽  
Metal Phase Transition

GaAs undergoes a semiconductor–metal transition, which was investigated by in situ electrical measurements and first-principles calculations under a high pressure.

High-Pressure Electrical-Transport Properties of SnS: Experimental and Theoretical Approaches

2013 ◽  
Vol 117 (12) ◽  
pp. 6033-6038 ◽  
Author(s):  
Feng Ke ◽  
Jie Yang ◽  
Cailong Liu ◽  
Qinglin Wang ◽  
Yuqiang Li ◽  
...  
Keyword(s):  
High Pressure ◽  
Transport Properties ◽  
Electrical Transport ◽  
Electrical Transport Properties ◽  
Theoretical Approaches

scholarly journals Jovian seismology

1994 ◽  
Vol 147 ◽  
pp. 481-511
Author(s):  
Benoît Mosser
Keyword(s):  
High Pressure ◽  
Internal Structure ◽  
Low Temperatures ◽  
High Pressures ◽  
Giant Planets ◽  
The Other ◽  
Interior Structure ◽  
Theoretical Approaches ◽  
Thermodynamical Laws ◽  
The Relationship

AbstractThis paper reviews a new astrophysical subject: seismology of the giant planets. Seismology is dedicated to the sounding of the interior structure of any object; on the other hand, the interiors of the Jovian planets need to be constrained, in order to improve our knowledge of their structure and of their evolution, as well as the thermodynamical laws involved at high pressures and low temperatures. The relationship between Jovian seismology and, first, Jovian internal structure, and second, high pressure physics, is examined, in order to determine the task of “dioseismology”† in the next years. We present then the seismological theoretical approaches developped since the pionnering work of Vorontsov et al. (1976), who calculated the frequencies of the Jovian eigenmodes. We report the first observational attempts for the detection of the oscillations of Jupiter. We discuss the observational results and examine what can be done in the future.

Magnetization, high pressure, and magnetocaloric studies of MnRuxRh1-xAs (x = 0.05, 0.1): Experimental and theoretical approaches

2019 ◽  
Vol 776 ◽  
pp. 59-70 ◽  
Author(s):  
D. Szymański ◽  
R. Zach ◽  
W. Chajec ◽  
R. Duraj ◽  
J. Tobola ◽  
...  
Keyword(s):  
High Pressure ◽  
Theoretical Approaches

Die Erniedrigung der Ionisationsenergie des C II-Ions in einem Hochdruckplasma

1974 ◽  
Vol 29 (5) ◽  
pp. 810-818 ◽  
Author(s):  
Horst Ehrich ◽  
Hans Jürgen Kusch
Keyword(s):  
High Pressure ◽  
Ionization Potential ◽  
Electron Density ◽  
Plasma Column ◽  
Channel Measurements ◽  
Polarization Effects ◽  
Line Intensities ◽  
Theoretical Approaches ◽  
Rapid Scan ◽  
Good Agreement

Abstract The lowering of the ionization potential of singly ionized carbon has been determined from measurements of the high - pressure plasma produced by capillary - discharges in plexiglass. Line intensities of C III 2297 Å and C II 2509/2511 Å as well as the electron density from the profile of Ha were obtained side-on by the use of a rapid-scan method while the temperature of the plasma was derived from simultaneous multi-channel-measurements of the optically thick end-on radiation of the plasma column. Rather good agreement is found with the results of the theoretical approaches based on polarization-effects in plasmas.

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