Foaad Shakir

4 Questions 9 Answers 0 Followers

Questions related from Foaad Shakir

Why it gets slight shifted in (FT-IR measurement) peak location and change the relative intensity of the PEGs peaks?

In FT-IR spectroscopy measurement for pure PEG8000 and PEG8000/1wt%GO nanocomposite films , why it gets slight shifted in peak location and change the relative intensity of the peaks?

08 February 2019 4,219 5 View

Why did the indirect optical energy gap decrease with increasing the molecular weights of pure PEG and with the adding of 1wt.% GO?

Both the allowed and forbidden indirect transition optical energy gap values for three polymers of PEG and its nanocomposite films with GO: PEG4000, PEG8000 , PEG20000 and PEG/1wt% GO (prepared by...

01 February 2019 393 3 View

Under any temperature and pressure can be prepare a homogeneous solid solution from the Al-Ni-Cr alloy?

Under any temperature and pressure can be prepare a homogeneous solid solution from the Al-Ni-Cr alloy with the observation that the melting point of Al is 660 ° C, Ni ° C is 1453 and Cr is 1907 °...

15 January 2019 7,721 9 View

Does anyone tell me about the constant values of Scherer (K) in eq. G.S=k λ / β cos(θ) ?

Does anyone tell me about the constant values of Scherer (K) in eq. G.S=k λ / β cos(θ). Some researchers depend on the value 0.9 ; some 0, 91 ; and some 0.94 ?. Is this difference in opinions...

05 January 2019 2,269 3 View