Investigation to 6 kbar of lambda and solid-liquid transitions in sodium nitrate

1974 ◽  
Vol 19 (3) ◽  
pp. 210-211 ◽  
Author(s):  
Lewis H. Cohen ◽  
William Klement
Keyword(s):  
Sodium Nitrate ◽  
Solid Liquid

Role of Vibration-Induced Streaming in Float-Zone Crystal Growth

2000 ◽  
Author(s):  
Amrutur V. Anilkumar ◽  
Richard N. Grugel
Keyword(s):  
Sodium Nitrate ◽  
Silicone Oil ◽  
Surface Flow ◽  
Thermocapillary Flow ◽  
Return Flow ◽  
Zone Length ◽  
Float Zone ◽  
Streaming Velocity ◽  
Solid Liquid Interface ◽  
Solid Liquid

Abstract The streaming induced in a short vertical liquid column by the vibration of one of the supporting end walls has been utilized in this novel study. Vibration essentially drives a surface flow in the zone away from the vibrating wall, with the return flow in the bulk towards the wall. Preliminary measurements of the surface streaming velocity show that it increases with the frequency and amplitude of vibration and the zone length, and decreases with the viscosity of the zone liquid. This controlled surface streaming has been employed to balance a opposing, steady thermocapillary flow in model half-zones of silicone oil and Sodium Nitrate. In addition, in a float-zone solidification experiment with Sodium Nitrate - Barium Nitrate eutectic as the study material, we have demonstrated that streaming-based balancing of thermocapillary flow promotes a planar solid/liquid interface and a uniform microstructure.

Specific heat of sodium nitrate and silver nitrate by medium high temperature adiabatic calorimetry

1967 ◽  
Vol 20 (1) ◽  
pp. 1 ◽  
Author(s):  
VC Reinsborough ◽  
FEW Wetmore
Keyword(s):  
Specific Heat ◽  
Silver Nitrate ◽  
Sodium Nitrate ◽  
Thermal Hysteresis ◽  
Adiabatic Calorimeter ◽  
Drop Calorimetry ◽  
Calorimetric Technique ◽  
Temperature Ranges ◽  
Solid Liquid ◽  
Heat Of Transformation

��� A relatively simple adiabatic calorimeter for use in the temperature range 50-350� was constructed and used to measure the specific heat of sodium nitrate from 150 to 300� and silver nitrate from 70 to 250�. Each salt undergoes a solid-solid and a solid-liquid transformation in these temperature ranges. The Cp values for sodium nitrate agreed within the calculated experimental error of �0.2% with those of Sokolov and Shmidt1 but the silver nitrate showed a large discrepancy with those of Janz and Kelly2 obtained by drop calorimetry for the 160-210� region, where thermal hysteresis may have occurred in the drop calorimetric technique. The heat of transformation for the solid-solid transition in silver nitrate at 159.4� was found to be 561�4 cal mole-1.

Atom-probe analysis of the solid-liquid interface

1995 ◽  
Vol 53 ◽  
pp. 676-677
Author(s):  
J.A. Panitz
Keyword(s):  
Molecular Level ◽  
Selective Adsorption ◽  
Electronic Devices ◽  
Atom Probe ◽  
Chemical Agent ◽  
Hostile Environment ◽  
Solid Interface ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Chemically Selective

The first few atomic layers of a solid can form a barrier between its interior and an often hostile environment. Although adsorption at the vacuum-solid interface has been studied in great detail, little is known about adsorption at the liquid-solid interface. Adsorption at a liquid-solid interface is of intrinsic interest, and is of technological importance because it provides a way to coat a surface with monolayer or multilayer structures. A pinhole free monolayer (with a reasonable dielectric constant) could lead to the development of nanoscale capacitors with unique characteristics and lithographic resists that surpass the resolution of their conventional counterparts. Chemically selective adsorption is of particular interest because it can be used to passivate a surface from external modification or change the wear and the lubrication properties of a surface to reflect new and useful properties. Immunochemical adsorption could be used to fabricate novel molecular electronic devices or to construct small, “smart”, unobtrusive sensors with the potential to detect a wide variety of preselected species at the molecular level. These might include a particular carcinogen in the environment, a specific type of explosive, a chemical agent, a virus, or even a tumor in the human body.

Rotation planar extraction and medium-pressure solid-liquid extraction of onion (Allium cepa)

2003 ◽  
Vol 16 (1) ◽  
pp. 66-70 ◽  
Author(s):  
Irena Vovk ◽  
Breda Simonovska ◽  
Samo Andrenšek ◽  
Teijo Yrjönen ◽  
Pia Vuorela ◽  
...  
Keyword(s):  
Allium Cepa ◽  
Liquid Extraction ◽  
Medium Pressure ◽  
Solid Liquid Extraction ◽  
Solid Liquid
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