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Isolation of norgestrel in contraceptive tablets for use as an analytical standard in its quantification in the aquatic environment
(2017-11-16)
Steroidal hormones, natural and synthetic, have become a global concern due to the serious effects they pose to the aquatic environment. Although these hormones are found in low dosage levels in contraceptives, it is the ...
Synthesis and Optical Characterisation of C-sio2 and C-nio Sol-gel Composite Films For Use as Selective Solar Absorbers.
(2012-09-12)
Carbon-silica (C-SiO2) and carbon-nickel oxide (C-NiO) composite films were fabricated on aluminium and steel substrates by the sol-gel technique. The substrates were cleaned before spin coating took place. The precursor ...