Measurement of Elastomer's Bulk Modulus by Means of a Confined Compression Test

1994 ◽  
Vol 67 (5) ◽  
pp. 871-879 ◽  
Author(s):  
Shu H. Peng ◽  
Takao Shimbori ◽  
Akbar Naderi
Keyword(s):  
Bulk Modulus ◽  
Volume Change ◽  
Treatment Technique ◽  
Pressure Loading ◽  
Confined Compression ◽  
Routine Test ◽  
Simple Method ◽  
Testing Method ◽  
Analysis Technique

Abstract The bulk modulus represents a material's resistance to volume change when subjected to pressure loading. Determination of bulk modulus is important for evaluation of applications where compression is involved. Most methods proposed for this purpose are complicated and costly. A simple method is to compress an elastomer button, fully confined in a metal fixture, on a tensile/compression machine. The reliability of this method is studied and a data-treatment technique is proposed to improve the accuracy. It shows that the testing method, with the new analysis technique recommended, is efficient and can be used as a routine test.

Note on the determination of the volume elasticity of elastic solids.

1905 ◽  
Vol 74 (497-506) ◽  
pp. 518-523 ◽  
Author(s):  
Charles Chree
Keyword(s):  
Circular Cylinder ◽  
Internal Pressure ◽  
Bulk Modulus ◽  
Direct Observation ◽  
Mathematical Theory ◽  
Elastic Solids ◽  
Simple Method

In a recent paper Mr. A. Mallock gives an ingenious and simple method of determining the coefficient of volume elasticity (bulk modulus) of metals by direct observation of the extension of a hollow right circular cylinder under uniform internal pressure. The method depends on a result of the mathematical theory which seems capable of being proved in a more direct and complete way, but which at the same time requires to be restricted by conditions to which Mr. Mallock does not seem to refer. Further, the method is only one of several which seem equally worthy of consideration.

Development of a simple method for the determination of single nucleotide polymorphisms

2010 ◽  
Vol 34 (8) ◽  
pp. S75-S75
Author(s):  
Weifeng Zhu ◽  
Zhuoqi Liu ◽  
Daya Luo ◽  
Xinyao Wu ◽  
Fusheng Wan
Keyword(s):  
Single Nucleotide Polymorphisms ◽  
Nucleotide Polymorphisms ◽  
Simple Method ◽  
Single Nucleotide

Pengaruh Kepuasan Kerja terhadap Organizational Citizenship Behavior (OCB) Alumni Diklat Kepemimpinan Tingkat IV di Provinsi Banten

2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Enong Rostiawati
Keyword(s):  
Job Satisfaction ◽  
Organizational Citizenship ◽  
Organizational Citizenship Behavior ◽  
Leadership Training ◽  
Survey Methods ◽  
Citizenship Behavior ◽  
Entire Study ◽  
Analysis Technique ◽  
Study Population

Abstract: Organizational Citizenship Behavior (OCB) is a variable that can be influenced by job satisfaction. This study aims to determine the effect of job satisfaction variables on Organizational Citizenship Behavior OCB alumni level IV leadership training in Banten Province. This research uses a quantitative approach through survey methods. Data analysis technique used is simple linear regression. The population in this study were 40 respondents and the sample used was 40 respondents. Determination of the sample using total sampling techniques or samples taken from the entire study population. The results of the analysis and interpretation of research data show that the value of the regulatory coefficient of influence on job satisfaction on Organizational Citizenship Behavior (OCB) alumni of leadership training level IV is 0.740 thus it can be concluded that job satisfaction has a direct positive effect on Organizational Citizenship Behavior alumni training, meaning that improvement of satisfaction in IV level leadership training is 0.740. work has an impact on improving Organizational Citizenship Behavior for training alumni, So Organizational Citizenship Behavior for training alumni can be achieved through job satisfaction.Keywords: Job satisfaction, Organizational Citizenship Behavior, Leadership Training Alumni Level IV

DETERMINASI PEMBIAYAAN MUSYARAKAH

Equity ◽  
2015 ◽  
Vol 18 (1) ◽  
pp. 19
Author(s):  
Regi Oktaviyori ◽  
Praptiningsih Praptiningsih
Keyword(s):  
Significant Influence ◽  
Hypothesis Test ◽  
Third Parties ◽  
Analysis Technique ◽  
Sample Amount ◽  
Level Of Significance ◽  
Fund Return

This study aims to examine the determination of musyarakah financing in Bank Syariah Mandiri (BSM) period March 2008-December 2011. The data is obtainedbased on bank finance reporting that at publication. It is gained sample amount of 44 months. The analysis technique used here is multiple linier regression and hypothesis test using t-statistic and F-statistic with level of significance 5%. The result of this research is Third Parties Fund (DPK) and return gives significantly on musyarakah financing. The return on asset is not significant to musyarakah financing. By simultaneous, musyarakah financing give significant influence on the level of Third Parties Fund, return and return on asset.

A Standard Primary Toxicity Bioassay Using Daphnia Magna as a Test Species

1977 ◽  
Vol 12 (1) ◽  
pp. 27-50 ◽  
Author(s):  
L.A. Behie ◽  
J.E. Zajic ◽  
D. Berk ◽  
R.J.P. Brouzes ◽  
V.A. Naish
Keyword(s):  
Statistical Analysis ◽  
Daphnia Magna ◽  
Biological Indicator ◽  
Pulp And Paper ◽  
Toxicity Bioassay ◽  
Simple Method ◽  
Test Species ◽  
Test Organisms ◽  
Dilution Water

Abstract Although Daphnia magna have been widely used in the determination of the toxicity of various substances, there are no reports in the literature that describe a rigorous bioassay method using this organism as a test species. The test described herein involves the standariza-tion of various important aspects of the method such as the age of the test organisms, and the dilution water used for the preparation of the various toxicant concentrations. Also described is a simple method for the statistical analysis of the results. The sensitivity of the proposed bioassay is demonstrated by determining the toxicity of various pulp and paper effluents. Finally, extensive bioassays were carried out simultaneously with rainbow trout and Daphnia magna indicating that Daphnia are as good a biological indicator of acute toxicity as fish.

Comparison of the Bidirectional Load Test with the Top-Down Load Test

2005 ◽  
Vol 1936 (1) ◽  
pp. 108-116 ◽  
Author(s):  
Oh Sung Kwon ◽  
Yongkyu Choi ◽  
Ohkyun Kwon ◽  
Myoung Mo Kim
Keyword(s):  
Load Transfer ◽  
Measurement Data ◽  
Load Test ◽  
Load Testing ◽  
Pile Head ◽  
Top Down ◽  
Simple Method ◽  
Testing Method ◽  
Settlement Behavior ◽  
Cell Test

For the past decade, the Osterberg testing method (O-cell test) has been proved advantageous over the conventional pile load testing method in many aspects. However, because the O-cell test uses a loading mechanism entirely different from that of the conventional pile loading testing method, many investigators and practicing engineers have been concerned that the O-cell test would give inaccurate results, especially about the pile head settlement behavior. Therefore, a bidirectional load test using the Osterberg method and the conventional top-down load test were executed on 1.5-m diameter cast-in-place concrete piles at the same time and site. Strain gauges were placed on the piles. The two tests gave similar load transfer curves at various depth of piles. However, the top-down equivalent curve constructed from the bidirectional load test results predicted the pile head settlement under the pile design load to be approximately one half of that predicted by the conventional top-down load test. To improve the prediction accuracy of the top-down equivalent curve, a simple method that accounts for the pile compression was proposed. It was also shown that the strain gauge measurement data from the bidirectional load test could reproduce almost the same top-down curve.

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