scholarly journals Inexpensive and Accurate Measuring Device forWater Constitute in Oil

2006 ◽  
Vol 3 (1) ◽  
pp. 63
Author(s):  
M. Habli ◽  
M. Meribout ◽  
A. Al-Naamany ◽  
K. Al Busaidi
Keyword(s):  
High Resolution ◽  
Full Range ◽  
Experimental Results ◽  
Measuring Device ◽  
New Device ◽  
The Relationship ◽  
Very High ◽  
Good Agreement

This paper presents an inexpensive and accurate measuring device for water constitute in oil. The new device is based on the relationship between the water constitute in oil and the pressure of a sample from the oil. Experimental results show that the device can attain a very high resolution that can reach up +/- 0.4% and it can be used to measure a full range of water percentage levels (0-100%). Experimental results showed good agreement with theory. 

Calculation of Punch Force and Maximum Pressure for Tube Extrusion

2000 ◽  
Author(s):  
S.-H. Zhang ◽  
Y.-L. Shang
Keyword(s):  
Upper Bound ◽  
Physical Modeling ◽  
Steel Tube ◽  
Experimental Results ◽  
Maximum Pressure ◽  
Punch Force ◽  
Tube Extrusion ◽  
Tooling System ◽  
Very High ◽  
Good Agreement

Abstract Punch force and maximum pressure for tube extrusion can be predicted with an upper bound theory-based program POLSK. Experiments of steel tube extrusion and wax physical modeling were performed. The punch force and the maximum pressure values were obtained. Comparisons were made among the experimental results, physical modeling results and upper bound predictions. It was found that a medium extrusion coefficient causes the lowest pressure on the tooling system, very low and very high extrusion coefficients can both cause very high pressure. It is proved that the upper bound predictions are in good agreement with the experimental results and the upper bound program is suitable for use of steel tube extrusion design.

scholarly journals 2DVD Data Revisited: Multifractal Insights into Cuts of the Spatiotemporal Rainfall Process

2015 ◽  
Vol 16 (2) ◽  
pp. 548-562 ◽  
Author(s):  
Auguste Gires ◽  
Ioulia Tchiguirinskaia ◽  
Daniel Schertzer ◽  
Alexis Berne
Keyword(s):  
Time Series ◽  
High Resolution ◽  
Empirical Evidence ◽  
Heavy Rainfall ◽  
Resolution Time ◽  
Time Step ◽  
Measuring Device ◽  
Rainfall Events ◽  
Heavy Rainfall Events ◽  
Very High

Abstract Data collected during four heavy rainfall events that occurred in Ardèche (France) with the help of a 2D video disdrometer (2DVD) are used to investigate the structure of the raindrop distribution in both space and time. A first type of analysis is based on the reconstruction of 36-m-height vertical rainfall columns above the measuring device. This reconstruction is obtained with the help of a ballistic hypothesis applied to 1-ms time step series. The corresponding snapshots are analyzed with the help of universal multifractals. For comparison, a similar analysis is performed on the time series with 1-ms time steps, as well as on time series of accumulation maps of N consecutive recorded drops (therefore with variable time steps). It turns out that the drop distribution exhibits a good scaling behavior in the range 0.5–36 m during the heaviest portion of the events, confirming the lack of empirical evidence of the widely used homogenous assumption for drop distribution. For smaller scales, drop positions seem to be homogeneously distributed. The notion of multifractal singularity is well illustrated by the very high-resolution time series.

The relationship between the digestibility of a sward and the herbage consumption of grazing calves

1968 ◽  
Vol 70 (1) ◽  
pp. 47-51 ◽  
Author(s):  
J. Hodgson
Keyword(s):  
Food Intake ◽  
Linear Relationship ◽  
Full Range ◽  
Chromic Oxide ◽  
Regression Equations ◽  
Faecal Output ◽  
Herbage Intake ◽  
The Relationship ◽  
Very High

SUMMARYNitro-chalk was applied to S.23 ryegrass swards, at approximately monthly intervals, at two contrasting levels in 1961 and three levels in 1962. Steer calves, 3–6 months old, grazed in rotation round a series of four paddocks on each treatment. Paddocks were trimmed and fertilizer applied after each grazing. The herbage intakes of the calves were determined on three occasions in 1961 and four occasions in 1962. Faecal output was estimated by chromic oxide dilution. In vitro digestibility determinations were carried out on samples of herbage clipped from the swards.There was a close linear relationship between the digestibility of the herbage and the amount eaten, over the full range of digestibility encountered (68–82%). Regression equations calculated within seasons and fertilizer levels, and within years, did not differ significantly. The regressions of faecal output on herbage digestibility were not significantly different from zero.The observed relationship between herbage digestibility and herbage intake may reflect (a) the greater sensitivity of young ruminants than adult stock to changes in the digestibility of the diet, and (b) the reduced importance of the chemostatic control of food intake, except at very high levels of digestibility, in young rapidly growing animals.

Unconventional Tee Forming on Metal Tubes

1985 ◽  
Vol 107 (4) ◽  
pp. 392-396 ◽  
Author(s):  
L. A. Moreira Filho ◽  
H. A. Al-Qureshi
Keyword(s):  
Upper Bound ◽  
Work Hardening ◽  
Experimental Results ◽  
Empirical Expression ◽  
Forming Load ◽  
Tee Junction ◽  
The Relationship ◽  
Bound Theory ◽  
Good Agreement ◽  
Upper Bound Theory

An experimental machine using elastomer rod has been developed for the forming of tee-junction on metal tubes. This was achieved by applying loading-unloading cycles to the tube and the elastomer simultaneously. The success of the operation is governed by the so called “clearance height” which controls the relationship between the displaced volume of the elastomer and the reduced length of the tube. Present experiments have confirmed the validity of the empirical expression previously found. The upper-bound theory is found to be in good agreement with experimental results, for predicting the total forming load. The experiments were performed on materials with different work-hardening characteristics. In addition, the effects of other variables on the process are examined.

A Field Method of Determining Gas Turbine Meter Performance

1970 ◽  
Vol 92 (4) ◽  
pp. 724-731 ◽  
Author(s):  
W. F. Z. Lee ◽  
H. J. Evans
Keyword(s):  
Gas Turbine ◽  
Field Method ◽  
Experimental Results ◽  
Inexpensive Method ◽  
Analytical Results ◽  
The Relationship ◽  
Good Agreement

The need for a simple and inexpensive method for field checking gas turbine meters exists. One such method called the “spin test” is described in this paper. The relationship between the change of “rotor coast time” of the spin test and the change of meter accuracy due to change of mechanical friction is formulated. Experimental results on two different 6-in. gas turbine meters are presented and show good agreement with analytical results.

scholarly journals Exploring the Relationship between Burn Severity Field Data and Very High Resolution GeoEye Images: The Case of the 2011 Evros Wildfire in Greece

2016 ◽  
Vol 8 (7) ◽  
pp. 566 ◽  
Author(s):  
Eleni Dragozi ◽  
Ioannis Gitas ◽  
Sofia Bajocco ◽  
Dimitris Stavrakoudis
Keyword(s):  
High Resolution ◽  
Field Data ◽  
Burn Severity ◽  
The Relationship ◽  
Very High

scholarly journals Sperm numbers and fertility: a kinetic approach.

1965 ◽  
Vol 13 (4) ◽  
pp. 378-391
Author(s):  
C. Van Duijn
Keyword(s):  
Kinetic Theory ◽  
Experimental Results ◽  
Kinetic Approach ◽  
The Relationship ◽  
Sperm Movement ◽  
Good Agreement

A kinetic theory is derived for the relationship between numbers of spermatozoa, sperm movement, and the probability of fertilization. The theory shows good agreement with experimental results. Cf. A.B.A., 33, Nos. 1872 and 1873. F. S. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Computing and Analyzing the Sensitivity of Radial-Basis Function Neural Network

2013 ◽  
Vol 321-324 ◽  
pp. 1957-1961
Author(s):  
Jie Li ◽  
Jun Li ◽  
Ying Liu
Keyword(s):  
Neural Network ◽  
Radial Basis Function ◽  
Uniform Distribution ◽  
Basis Function ◽  
Experimental Results ◽  
Radial Basis ◽  
The Relationship ◽  
Theoretical Results ◽  
Input Error ◽  
Good Agreement

This paper proposes an algorithm to compute the sensitivity of the Radial-Basis Function Neural Network (RBFNN) due to the errors of the inputs and others parameters of the net works. For simplicity and practicality, all inputs and weights are assumed to be independent and identically distributed (i.i.d) with uniform distribution. A number of simulations are conducted and the good agreement between the experimental results and the theoretical results verifies the reliability and feasibility of the proposed algorithm. The relationship between the sensitivity of RBFNN and input error and the perturbation of others parameters is given.

scholarly journals Laser Thermochemical High-Contrast Recording on Thin Metal Films

Nanomaterials ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 67
Author(s):  
Elena A. Shakhno ◽  
Quang D. Nguyen ◽  
Dmitry A. Sinev ◽  
Elizaveta V. Matvienko ◽  
Roman A. Zakoldaev ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Experimental Results ◽  
Visible Range ◽  
High Contrast ◽  
Laser Parameters ◽  
Direct Laser ◽  
Contrast Structures ◽  
Direct Laser Interference Patterning ◽  
The Relationship ◽  
Good Agreement

Laser-induced thermochemical recording of nano- and microsized structures on thin films has attracted intense interest over the last few decades due to essential applications in the photonics industry. Nevertheless, the relationship between the laser parameters and the properties of the formed oxide structures, both geometrical and optical, is still implicit. In this work, direct laser interference patterning of the titanium (Ti) film in the oxidative regime was applied to form submicron periodical structures. Depending on the number of laser pulses, the regime of high contrast structures recording was observed with the maximum achievable thickness of the oxide layer. The investigation revealed high transmittance of the formed oxide layers, i.e., the contrast of recorded structures reached up to 90% in the visible range. To analyze the experimental results obtained, a theoretical model was developed based on calculations of the oxide formation dynamics. The model operates on Wagner oxidation law and the corresponding optical properties of the oxide–metal–glass substrate system changing nonlinearly after each pulse. A good agreement of the experimental results with the modeling estimations allowed us to extend the model application to other metals, specifically to those with optically transparent oxides, such as zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), and tantalum (Ta). The performed analysis highlighted the importance of choosing the correct laser parameters due to the complexity and nonlinearity of optical, thermal, and chemical processes in the metal film during its laser-induced oxidation in the air. The developed model allowed selecting the suitable temporal–energetic regimes and predicting the optical characteristics of the structures formed with an accuracy of 10%. The results are promising in terms of their implementation in the photonics industry for the production of optical converters.

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