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Questions related from Ali Nematollahzadeh
I am using Belsorp mini BET instrument. During the measurement, in the desorption stage, I face a message saying "V5 (F) needle valve is too tight" and the analysis interrupts. I changed the V5...
20 April 2021 8,740 0 View
Dear researchers, I would like to find out how different models of Perkin Elmer photoluminescence spectrophotometer, namely LS-50, LS50B, and LS55, compare? For daily use with no need for an...
26 February 2020 5,737 0 View
It is well known that in curve fitting of linear and non-linear form of adsorption isotherms on a set of experimental data, different values are achieved for isotherm parameters and R2. What...
18 April 2019 3,324 5 View
Dear All, Which one is more accurate, favorable, time-consuming, and cost effective for measuring multiple atoms, ICP or AAS? What are the pros and cons? Thanks in advance
25 October 2018 8,954 9 View
CHNSO elemental analysis from Perkin Elmer 2400 has a combustion/reduction tube for 70 analyses. In total we can test about 37 samples and the rest (33 runs) is used as k-factor and blanks. In an...
19 August 2018 7,054 0 View
CHNSO elemental analysis from Perkin Elmer 2400 has a combustion/reduction tube for 70 analyses. In total we can test about 37 samples and the rest (33 runs) is used as k-factor and blanks. In...
17 August 2018 3,184 0 View
In the transient heat transfer PDE: d2T/dx2=1/a*dT/dt , a=k/p*Cp k= heat conduction, p=density, Cp= heat capacity For example: if k=1, p=1 and Cp=1, the heat diffusivity a=1. I solve the PDE by...
02 December 2015 5,439 6 View
