scholarly journals On Evaporation and Dissociation. - Part VI. (continued). On the Continuous Change from the Gaseous to the Liquid State at all Temperatures

1887 ◽  
Vol 9 (1) ◽  
pp. 33-49
Author(s):  
William Ramsay ◽  
Sydney Young
Keyword(s):  
Liquid State ◽  
Continuous Change

scholarly journals The persistence of the liquid state of aggregation above the critical temperature. The system ethylene

1937 ◽  
Vol 236 (766) ◽  
pp. 303-332 ◽  
Keyword(s):  
Critical Temperature ◽  
Hydrogen Chloride ◽  
Liquid State ◽  
Liquid Mixture ◽  
Molecular Compound ◽  
Continuous Change ◽  
Critical Temperatures ◽  
Component System ◽  
Rate Of Reaction ◽  
The Difference

The research described below arose from previous investigations carried out in this laboratory.* In a study of the influence of molecular compound formation on the rate of reaction (MAASS and SIVERTZ, 1925) it was found that although propylene and hydrogen chloride apparently react in a reproducible manner when the reactants are brought together in the liquid state, no measurable reaction occurs when they are brought together as gases. At first this was ascribed to the difference in concentration between the liquid and the gaseous states. However, it was shown (Sutherland and Maass, 1931) that when propylene and hydrogen chloride are brought together at room temperature as gases and heated above the critical temperatures of the mixture, no reaction occurs even when they are compressed to a concentration as great as that of the liquid mixture slightly below the critical temperature. The rate of reaction of the liquid mixture was found to increase with rise in temperature in the usual manner up to the critical temperature, but was found to be nil in the absence of the liquid phase. The acquirement of results of a similar nature by the application of the same procedure to other systems has been delayed owing to the fact that for most systems in which a homogeneous reaction takes place in the liquid state the critical temperatures and pressures are so high as to enhance greatly the experimental difficulties. An attempt to overcome these difficulties is still in progress. In the meantime other investigations have been undertaken with the object of finding a possible explanation for a discontinuity in reaction rate at the critical temperature. The first was an attempt to discover whether or not at the critical temperature a marked discontinuity of state exists in a two-component system, in contrast to the continuous change generally accepted as taking place in a one-component system.

Dynamic low-dose electron diffraction and imaging of phase transitions in polymers

1993 ◽  
Vol 51 ◽  
pp. 890-891
Author(s):  
David C. Martin ◽  
Jun Liao
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Electron Diffraction ◽  
Low Dose ◽  
Dark Field ◽  
Continuous Change ◽  
Selected Area Electron Diffraction ◽  
Resolution Electron ◽  
Chain Axis ◽  
High Resolution Electron Micrographs

By careful control of the electron beam it is possible to simultaneously induce and observe the phase transformation from monomer to polymer in certain solid-state polymcrizable diacetylenes. The continuous change in the crystal structure from DCHD diacetylene monomer (a=1.76 nm, b=1.36 nm, c=0.455 nm, γ=94 degrees, P2l/c) to polymer (a=1.74 nm, b=1.29 nm, c=0.49 nm, γ=108 degrees, P2l/c) occurs at a characteristic dose (10−4C/cm2) which is five orders of magnitude smaller than the critical end point dose (20 C/cm2). Previously we discussed the progress of this phase transition primarily as observed down the [001] zone (the chain axis direction). Here we report on the associated changes of the dark field (DF) images and selected area electron diffraction (SAED) patterns of the crystals as observed from the side (i.e., in the [hk0] zones).High resolution electron micrographs (HREM), DF images, and SAED patterns were obtained on a JEOL 4000 EX HREM operating at 400 kV.

HASTANELERİN HİZMET KALİTESİNİN HASTA TATMİN ÖLÇEĞİ İLE ÖLÇÜLMESİ: KARABÜK DEVLET HASTANESİNDE YATAN HASTALAR ÜZERİNDE BİR ARAŞTIRMA THE MEASUREMENT SERVICE QUALITY OF THE HOSPITALS BY THE PATIENT SCALE: A RESEARCH ON THE PATIENTS IN KARABUK STATE HOSP

2013 ◽  
Vol 1 (1) ◽  
pp. 100
Author(s):  
Selçuk Yurtsever
Keyword(s):  
Patient Satisfaction ◽  
Health Services ◽  
Literature Review ◽  
Private Sector ◽  
State Hospital ◽  
Continuous Change ◽  
Satisfaction Scale ◽  
The World ◽  
Main Factors

It has been known that both in the world and in Turkey a continuous change has been experienced in the provision of health services in recent years. In this sense by adopting the customer(client) focused approach of either public or private sector hospitals; it has been seen that they are in the struggle for presenting a right, fast, trustuble, comfy service. The purpose of this research is to measure the satisfaction degree, expectations and perceptions of the patients in Karabük State Hospital through comparison. In this context, the patient satisfaction scale which has been developed as a result of literature review has been used and by this scale it has been tried to measure the satisfaction levels of the patients in terms of material and human factors which are the two main factors of the service that was presented. In the study, with the scales of Servqual and 0-100 Points together, in the part of the analysis MANOVA have been used. The expectations and the perceptions of the patient has been compared first by generally and then by separating to different groups according to the various criterias and in thisway it has been tried to be measured their satisfaction levels. According to the results that were obtained, although, the satisfaction levels of the patients who have taken service from Karabük State Hospital are high in terms of thedoctors and the nurses; it has been reached to the result that their satisfaction levels are low in terms of the materials that have been used at the presenting of the service and the management.

Prediction Method of a System with Continuous Change Parameters Considering SNR Fluctuation

2018 ◽  
Vol 138 (9) ◽  
pp. 1075-1081
Author(s):  
Yasuhide Kobayashi ◽  
Mitsuyuki Saito ◽  
Yuki Amimoto ◽  
Wataru Wakita
Keyword(s):  
Prediction Method ◽  
Continuous Change

METGLAS ALLOY 2826

Alloy Digest ◽  
1976 ◽  
Vol 25 (11) ◽  
Keyword(s):  
Magnetic Properties ◽  
Metallic Glass ◽  
Liquid State ◽  
Single Phase ◽  
Heat Treating ◽  
High Permeability ◽  
Metallic Material ◽  
Nickel Iron ◽  
Rapid Quench ◽  
Chemical Corporation

Abstract METGLAS Alloy 2826 (Fe40Ni40P14B6) is a ferromagnetic, high permeability, nickel-iron metallic glass which, when appropriately annealed, yields a material similar to the higher nickel containing permalloys in magnetic properties. Alloy 2826 is a single phase, opaque metallic material with a glass-like structure obtained by a very rapid quench from the liquid state. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on forming and heat treating. Filing Code: Ni-235. Producer or source: Allied Chemical Corporation.

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