In the title compound, C(3)H(5)N(2) (+)·C(2)HO(4) (-), the anions form centrosymmetric dimers through cyclic O-H⋯O hydrogen-bonding associations [graph set R(2) (2)(10)]. These dimers are then linked through a cyclic R(4) (2)(10) N-H⋯O hydrogen-bonding association involving two cations and the carboxyl O-atom acceptors of separate anions, giving chain structures extending across the (111) plane.

A direct method has been devised for determining serum and urinary inorganic phosphorus and serum phosphatase activity. Inorganic phosphorus forms a phosphomolybdate complex in the presence of borate. The complex is reduced with ascorbic acid. The resulting suspension is solubilized with carbonate and the absorbance measured at 720 nm. Samples containing low to moderate concentrations of biliru...

The effect of demineralization on Indian bituminous coal by filamentous fungus Aspergillus niger has been investigated. X-ray diffraction profile reveals the presence of inorganic components in the sample. Biosolubilised products were characterized by FT-IR, SEM-EDS and XRD. The study reveals that coal consist of a semi-crystalline turbostratic structure. The broad diffraction peak at 20~25.5 a...

Introduction: Dentin hypersensitivity is a pain arising from exposed dentin, typically in response to clinical, thermal, tactile, evaporative or osmotic stimuli that cannot be explained as arising from any other form of dental pathology. Most authorities agree that Brannstrom’s “Hydrodynamic Theory" of nerve stimulation due to movement of dentinal fluid, best explains dentin hypersensitivity. T...

An electrolyte consisting of lithium nitrate (LiNO 3 ) and difluoro(oxalato)borate (LiDFOB) in ethylene carbonate (EC), ethylmethyl (EMC), triethyl phosphate (TEP) is used to improve the long-term cycling stability silicon anodes. TEP was selected for its ability dissolve LiNO carbonates a concentration ∼0.2 M. The large amount combined with LiDFOB salt leads capacity retention 87.1% after one ...

The title compound, [Cu(C(2)O(4))(C(5)H(8)N(2))(2)](n), is composed of one-dimensional linear chains running parallel to the a axis. In the chain, trans-[Cu(imidazole)(2)](2+) units are sequentially bridged by bis-bidentate oxalate ligands, resulting in an octa-hedral CuO(4)N(2) donor set. The Cu⋯Cu separation through the oxalate bridge is 5.620 (5) Å. Both the Cu atoms and the C-C bond of the ...