a spectrophotometric procedure for the determination of nickel (??) based on the complex formation with 6-phenyl-2, 3-dihydro-as-triazine-3-thione (pdtt) was developed. a yellow compound forms and is easily extractable by chloroform at ph>6. the mole ratio between nickel (??) and pdtt is 1:4. the absorbance of the complex obeys beer's law over the concentration range of 1-7 ug of ni (??) p...

one of the methods to enhance bio-accessibility of drugs like acridone and its oxime is toform inclusion complexes with β-cyclodextrin. the formation of such complexes has beenconfirmed by changes in spectral characteristics and melting point data. the aqueous phasesolubility studies reveal 1:1 stoichiometry between the compound and, β-cyclodextrin. the studyof thermodynamic parameters like δg,...

Advances in data generation and acquisition have resulted a volume of available such magnitude that our ability to interpret extract valuable knowledge from them has been surpassed. Our capacity analyze is hampered not only by their amount or dimensionality, but also relationships the complexity systems they model. Compound graphs allow us represent existing between nodes are themselves hierarc...