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ABSTRACTRickets is an important problem in children. The majority of rickets in children is due to deficiency of calcium, phosphorus or vitamin D. However, rickets may also be a feature of renal diseases, e.g. renal tubular acidosis, hypophosphatemic rickets or rickets associated with renal insufficiency. The treatment varies with etiology and hence complete workup is essential before initiating therapy.

N-Benzoylglycine hydrazide(BzGH) has been found to react with bivalent 3d-metal ions forming complexes of the types M(BzGH)2Cl2, M'(BzGH-H)2·nH2O and M' (BzGH-2H)·3H2O [M = Mn(II), Co(II), Ni(II), Cu(II) and Zn(II); M' = Co(II), Ni(II) and Cu(II); n = 1 or 2]. Molar conductance studies in 0.001 M DMSO solutions have indicated the non-ionic nature of the complexes. High-spin octahedral geometry for Mn(II), Co(II) and Ni(II) complexes has been suggested on the basis of magnetic and/or electronic spectral studies. IR spectra suggest neutral bidentate, uninegative bidentate and dinegative tridentate behaviour of the ligand in the complexes. ESR spectra of Cu(II) complexes indicate a dx2-y2 ground state of the metal atom with a very weak metal-metal interaction in Cu(BzGH-H)2·H2O and Cu(BzGH-2H)·3 H2O.

The results of the nitrogen uptake as influenced by the nitrogen-fixing capacity and organic matter added by blue-green algae during three crop seasons are presented on the basis of field and pot experiments. An estimate of the nitrogen contribution in the study of the residual effect of blue-green algae has also been made.