A Photographic Investigation of the Stability of a Vapor Nucleus in a Glass Cavity

1984 ◽  
Vol 106 (2) ◽  
pp. 402-406 ◽  
Author(s):  
T. W. Forest
Keyword(s):  
Thermodynamic Analysis ◽  
Glass Capillary ◽  
Small Glass ◽  
The Stability

A set of experiments was conducted to observe the stability of a vapor nucleus trapped inside a small glass capillary for water at a uniform superheat. The glass cavity was of a shape that allowed the incipient growth and collapse of the nucleus to be clearly distinguished. Photographs showing the nucleus instabilities are presented at one of three different system pressures used in the experiments. The observed stability of the nucleus and the measured superheats corresponding to the incipient instabilities agree with predictions based on a previous thermodynamic analysis.

Applications of a Laboratory X-ray Micropsobe to Materials Analysis

1988 ◽  
Vol 32 ◽  
pp. 115-120 ◽  
Author(s):  
D. A. Carpenter ◽  
M. A. Taylor ◽  
C. E. Holcombe
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
High Sensitivity ◽  
Specimen Preparation ◽  
X Rays ◽  
Glass Capillary ◽  
Materials Analysis ◽  
X Ray ◽  
Small Glass

A laboratory-based X-ray microprobe, composed of a high-brilliance microfocus X-ray tube, coupled with a small glass capillary, has been developed for materials applications. Because of total external reflectance of X rays from the smooth inside bore of the glass capillary, the microprobe has a high sensitivity as well as a high spatial resolution. The use of X rays to excite elemental fluorescence offers the advantages of good peak-to-background, the ability to operate in air, and minimal specimen preparation. In addition, the development of laboratory-based instrumentation has been of Interest recently because of greater accessibility when compared with synchrotron X-ray microprobes.

Thermodynamic analysis of the effect of water activity on the stability of macadamia nut

2007 ◽  
Vol 81 (3) ◽  
pp. 566-571 ◽  
Author(s):  
Irma L. Domı´nguez ◽  
Ebner Azuara ◽  
Eduardo J. Vernon-Carter ◽  
Cesar I. Beristain
Keyword(s):  
Water Activity ◽  
Thermodynamic Analysis ◽  
Effect Of Water ◽  
Macadamia Nut ◽  
The Stability

scholarly journals Thermodynamic analysis of the stability of planar interfaces between coexisting phases and its application to supercooled water

2019 ◽  
Vol 150 (22) ◽  
pp. 224503 ◽  
Author(s):  
Rakesh S. Singh ◽  
Jeremy C. Palmer ◽  
Athanassios Z. Panagiotopoulos ◽  
Pablo G. Debenedetti
Keyword(s):  
Thermodynamic Analysis ◽  
Supercooled Water ◽  
Coexisting Phases ◽  
The Stability

Investigation of flow through P[NIPAM/MMA] copolymer coated glass capillary tubes, and glass copolymer adhesion improvements with hydrofluoric acid etching

2010 ◽  
Vol 3 (1) ◽  
Author(s):  
R. Wiegmann ◽  
Y. Zhang ◽  
A. Yarin
Keyword(s):  
Fluid Flow ◽  
Hydrofluoric Acid ◽  
Microelectromechanical Systems ◽  
Capillary Tube ◽  
Acid Etching ◽  
Glass Capillary ◽  
Polymer Adhesion ◽  
Flow Through ◽  
Copolymer Poly ◽  
The Stability

This study aims to display the retention of the thermo-responsive properties of the copolymer poly(N-isopropyl acrylamide-methyl methacrylate) [P(NIPAM/MMA)] when coated on the inner diameter of a glass capillary tube, and to prove the stability of the copolymer coating when subjected to pressure driven fluid flow. The study shows that the fluid flow through such a capillary tube follows Hagen-Poiseuille flow. Furthermore, this study examines methods of improving polymer adhesion to glass by hydrofluoric acid etching. Such a coated tube system is applicable in drug delivery, self cleaning tubes, and microelectromechanical systems (MEMS).

scholarly journals Thermodynamic analysis of protein-ligand binding interactions in complex biological mixtures using the stability of proteins from rates of oxidation

2012 ◽  
Vol 8 (1) ◽  
pp. 148-161 ◽  
Author(s):  
Erin C Strickland ◽  
M Ariel Geer ◽  
Duc T Tran ◽  
Jagat Adhikari ◽  
Graham M West ◽  
...  
Keyword(s):  
Ligand Binding ◽  
Thermodynamic Analysis ◽  
Binding Interactions ◽  
Biological Mixtures ◽  
The Stability

scholarly journals The Application of Capillary Gas Chromatography to the Analyses of Acidic Constituents of Tobacco Leaf and Smoke

1984 ◽  
Vol 12 (4) ◽  
pp. 186-197
Author(s):  
R. F. Arrendale ◽  
R. F. Severson ◽  
O. T. Chortyk
Keyword(s):  
Fatty Acids ◽  
Gas Chromatography ◽  
Capillary Gas Chromatography ◽  
Chromatographic Analysis ◽  
Stationary Phases ◽  
Fused Silica ◽  
Glass Capillary ◽  
Glass Capillary Columns ◽  
The Stability ◽  
Acidic Compounds

Abstract Extensive details are presented for the laboratory preparation of specific glass capillary columns for the gas chromatographic analysis of various phenolic and acidic compounds of leaf and smoke. The chromatography of derivatized and underivatized mono- and dihydroxybenzenes, volatile acids, phenolic acids, and fatty acids is evaluated on both Pyrex glass and fused silica columns prepared by our methodology. The stability, efficiency, and low surface activity of columns prepared from different liquid stationary phases (SE-54, Superox-4, SP-1000, Silar 10C) are illustrated by numerous separations.

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