Purification of zinc ammoniacal leaching solution by cementation: Determination of optimum process conditions with experimental design by Taguchi's method

2006 ◽  
Vol 51 (2) ◽  
pp. 157-164 ◽  
Author(s):  
J MOGHADDAM ◽  
R SARRAFMAMOORY ◽  
M ABDOLLAHY ◽  
Y YAMINI
Keyword(s):  
Experimental Design ◽  
Optimum Process ◽  
Process Conditions ◽  
Taguchi’S Method ◽  
Leaching Solution ◽  
Ammoniacal Leaching

Standard Simple of Tin Bronze for Casting Develepment

2014 ◽  
Vol 1004-1005 ◽  
pp. 1186-1192
Author(s):  
Yan Song Li ◽  
Da Wei Wang
Keyword(s):  
Reference Materials ◽  
Standard Sample ◽  
National Standard ◽  
Optimum Process ◽  
Process Conditions ◽  
National Reference ◽  
Data Analyses ◽  
Tin Bronze ◽  
Standard Values

The development of standard simple of tin bronze for casting is presented,design of composition, selection melting temperature 1150 °C, put into 0.2m3/kg argon gas, stirring with 100rpm for 1min, keeping temperature for 30min as the optimum process conditions, coarse and fine tests of homogeneity with data analyses, determination of standard values and standard deviation. The homogeneity and standard values of samples meet the national standard GB/T15000 and YS/T409-1998. The standard sample series has ratification as National Reference Materials (GSB 04-2707-2011) by National Technical Commission on Reference Materials.

Determination of optimum process conditions for the extraction and separation of zirconium and hafnium by solvent extraction

2008 ◽  
Vol 90 (2-4) ◽  
pp. 115-120 ◽  
Author(s):  
M. Taghizadeh ◽  
R. Ghasemzadeh ◽  
S.N Ashrafizadeh ◽  
K. Saberyan ◽  
M. Ghanadi Maragheh
Keyword(s):  
Solvent Extraction ◽  
Optimum Process ◽  
Process Conditions ◽  
Extraction And Separation

Statistics and parallaxes

1978 ◽  
Vol 48 ◽  
pp. 7-29
Author(s):  
T. E. Lutz
Keyword(s):  
Experimental Design ◽  
Statistical Methods ◽  
Review Paper ◽  
Systematic Errors ◽  
Past Experience ◽  
Random Errors ◽  
Trigonometric Parallaxes ◽  
Systematic And Random Errors

This review paper deals with the use of statistical methods to evaluate systematic and random errors associated with trigonometric parallaxes. First, systematic errors which arise when using trigonometric parallaxes to calibrate luminosity systems are discussed. Next, determination of the external errors of parallax measurement are reviewed. Observatory corrections are discussed. Schilt’s point, that as the causes of these systematic differences between observatories are not known the computed corrections can not be applied appropriately, is emphasized. However, modern parallax work is sufficiently accurate that it is necessary to determine observatory corrections if full use is to be made of the potential precision of the data. To this end, it is suggested that a prior experimental design is required. Past experience has shown that accidental overlap of observing programs will not suffice to determine observatory corrections which are meaningful.

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