Instability Constant In Solubilized Solutions

1975 ◽  
Vol 256O (1) ◽  
Author(s):  
Β. Swaroop
Keyword(s):  
Instability Constant

Fluid-Elastic Instability of Rotated Square Array U-Tubes in Air-Water Flow

2009 ◽  
Vol 131 (4) ◽  
Author(s):  
In-Cheol Chu ◽  
Heung June Chung ◽  
Chang Hee Lee
Keyword(s):  
Tube Bundle ◽  
Damping Ratio ◽  
Elastic Instability ◽  
Two Phase ◽  
Instability Constant ◽  
Out Of Plane ◽  
Vibration Responses ◽  
Mode Vibration ◽  
Square Array ◽  
Side Flow

Fluid-elastic instability characteristics of a U-tube bundle were experimentally investigated in air-water two-phase flow. A total of 39 U-tubes were arranged in a rotated square array with a pitch-to-diameter ratio of 1.633. Vibration responses of four U-tubes were measured with three-axis accelerometers. Two sets of experiments were performed to investigate the onset of fluid-elastic instability, and the damping and hydrodynamic mass of the U-tube. The experiments were performed for a void fraction of 70–95%. Fluid-elastic instability was clearly observed in an out-of-plane mode vibration. The effect of a primary side flow on the vibration of U-tube was investigated separately. The damping ratio of the present U-tube was higher than the damping ratio of the cantilever tubes in the literature. The hydrodynamic mass of the U-tube was generally in accordance with the hydrodynamic mass of the cantilever tubes in the literature. The instability constant (K) of the Connors equation was assessed with a simplified effective gap velocity, and the fluid-elastic instability constant was 8.5.

Theoretical aspects of forming the economic potential of a territorial community: a synergetic approach

2021 ◽  
pp. 3-9
Author(s):  
I. B. Kovtun ◽  
T. V. Tereshchenko
Keyword(s):  
Social Relations ◽  
Full Range ◽  
Geographical Location ◽  
Functional Integral ◽  
Point Of View ◽  
Economic Potential ◽  
The Past ◽  
Economic Transformations ◽  
Instability Constant

The article is devoted to highlighting the author’s views on the theoretical aspects of the application of a synergetic approach to the formation of the economic potential of the modern territorial community. It is established that the potential of the territorial community characterizes many opportunities for its development in terms of using the full range of its resources, features of the past, current and planned structure of its economy, geographical location and other factors. Systematic, reproductive and resource approaches to determining the content of economic potential are described. Particular attention is paid to the system approach, which allows to reveal such aspects to the interpretation of the content of economic potential as elemental, structural, functional, integral and historical. The content and elements of the economic potential of the territorial community are proposed to be considered from the point of view of its resource provision; ability to structure and readiness to carry out socio-economic transformations; formation of the market environment; level and quality of community life; areas of implementation. It is established that since the economic potential of a territorial community is a complex heterogeneous system, synergetics should be applied to its study, which allows to explain the complexity and diversity of social relations and processes occurring in the territorial community, as well as to substantiate the content and logic of its economic potential. The formation of the economic potential of the territory should take into account the systemic principles of the synergetic concept, namely: self-organization; self-reproduction; subordination; openness; resonant influence; instability; constant fluctuations; bifurcation of development; multivariate development; dynamic hierarchy; nonlinearity; interconnection, interaction and interchangeability of system elements.

Determination of the Composition of Complexes and Their Instability Constant by Calorimetry

1967 ◽  
Vol 114 (2) ◽  
pp. 131 ◽  
Author(s):  
William H. Metzger ◽  
Abner Brenner ◽  
Harry I. Salmon
Keyword(s):  
Instability Constant ◽  
Composition Of Complexes

scholarly journals SPECTROPHOTOMETRIC STUDY ON THE FORMATION AND ANALYTICAL APPLICATION OF THE RHODIUM (III) CHELATE WITH 2-THIOXO-4-THIAZOLIDINONE

2002 ◽  
Vol 10 (11) ◽  
pp. 89-96
Author(s):  
Ion Ganescu ◽  
Vasilica Muresan ◽  
Liana Simona Sbirna ◽  
Anca Ganescu ◽  
Sebastian Sbirna ◽  
...  
Keyword(s):  
Binary System ◽  
Spectrophotometric Determination ◽  
Spectrophotometric Study ◽  
Continuous Variation ◽  
Analytical Application ◽  
Variation Method ◽  
Instability Constant ◽  
Formation Conditions ◽  
Continuous Variation Method

The paper presents a spectrophotometric study of the binary system Rh(III)-2-thioxo-4-thiazolidinone. The formation conditions and the analytical application of the formed complex for spectrophotometric determination of Rh(III) were studied. The composition of the Rh(III) chelate with this particular ligand was determined by the continuous variation method, its instability constant being Kinst = 1,61·10-8 mol2L-2.

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