We report a case of solid pseudopapillary epithelial neoplasm the pancreas in 19-year-old female who presented with abdominal pain. Computed tomography abdomen showed heterogenous density mass tail pancreas. The had fluid central region and soft tissue peripheral region. Post-contrast evaluation enhancement component. Based on radiological investigation carried out at our institute, diagnosis w...

Sulfonic acid-based precursors (SAP) play an important role in tailoring mesoporous silica’s and convert them to a solid acid catalyst with a Bronsted-type nature. These kinds of solid acids contribute to sustainable and green chemistry by their heterogeneous, recyclable, and high efficiency features. Therefore, knowing the properties and reactivity of SAPs can guide us to manufacture a sulfona...

silica-bonded n-propyldiethylenetriamine sulfamic acid (spdtsa) is employed as a recyclable heterogeneous solid acid catalyst for the synthesis of benzopyrano[2,3-d]pyrimidines  through one-pot condensation reaction of salicylaldehydes, malononitrile and secondary amines  at room temperature under solvent-free conditions. spdtsa showed much the same efficiency when used in consecutive reaction ...

avoiding cytolysis or membrane disruption. After incuba tion, the mixtures were centrifuged, and 105,000 x g supernatants were subjected to gel filtration. The macromolecular peak fractions thus obtained contained about 2% radio activity of the whole cells or 50% radioactivity of the plasma membranes. They showed several physical and chemical features characteristic of acid mucopolysaccharides....

Plasma homovanillic acid (pHVA) levels were estimated in 20 cases of schizophreniform disorder, 14 cases of schizophrenia 'on medication' and 17 cases of schizophrenia 'off medication'. A bimodal distribution of pHVA was seen in schizophreniform disorder subjects, suggesting heterogenous groups in terms of dopaminergic function. No significant difference in the pHVA values was seen in the 3 gro...

nano silica sulfuric acid as a solid acid, was described to be an effective catalyst for one-pot three-component reaction of kojic acid, aryl aldehydes and indoles for the preparation of 2-substituted aryl (indolyl) kojic acid derivatives. the catalyst was prepared by combination of chlorosulfonic acid to nano silica gel. the size of nanoparticles were observed with sem.all prepared compounds w...

avoiding cytolysis or membrane disruption. After incuba tion, the mixtures were centrifuged, and 105,000 x g supernatants were subjected to gel filtration. The macromolecular peak fractions thus obtained contained about 2% radio activity of the whole cells or 50% radioactivity of the plasma membranes. They showed several physical and chemical features characteristic of acid mucopolysaccharides....

a simple and mild one-pot three-component reaction for the preparation 1,4-dihydropyridines has been developed from various aldehyde substrates, 1,3-dicarbonyl compounds (dimedone) and ammonium acetate (hantzsch method) in the presence of a catalytic amount of phospho sulfonic acid (psa) as an efficient and heterogeneous solid acid in etoh at room temperature. preparation of psa is straightforw...

the one-pot, multi-component synthesis of 4,4′-(arylmethylene)bis(1h-pyrazol-5-ols) by tandem knoevenagel-michael reaction of phenylhydrazine, ethyl acetoacetate and aldehydes in the presence of silica-bonded n-propylpiperazine sulfamic acid (sbppsa) as a recyclable solid acid catalyst was reported. sbppsa showed much the same efficiency when used in consecutive reaction runs.