Linear-nonlinear optical and quantum chemical studies on Quinolinium 3,5-dinitrobenzoate: A novel third order non-linear optical material for optoelectronic applications.

An organic non-linear optical (NLO) crystal of Quinolinium 3,5-dinitrobenzoate (DNBAQ) was synthesized and good quality single crystals of DNBAQ were grown by conventional slow evaporation solution growth technique. Single crystal XRD was utilized to confirm the formation of the charge transfer complex. The crystalline property and the presence of required functional groups was verified employing Powder XRD and FTIR spectral analysis.

Detection of Campylobacter jejuni/C.coli infection in patients with Guillain-Barré syndrome by serology and culture.

Serum samples from 43 cases of Guillain-Barré Syndrome (GBS), 32 non-GBS neurology patients, and 35 healthy persons from a medical institute in Kerala, India, were tested for antibody levels against a Campylobacter jejuni strain Penner serotype 0:19 by agglutination and ELISA. Twenty-six percent of samples from GBS cases showed high antibody levels in all assays. Of 8 stool samples of new GBS cases examined by culture, 38% were positive for C.

Toxoplasma gondii IgM antibody prevalence study in patients suffering from neurological disorders.

One hundred and twenty seven patients belonging to Neurosurgery (49), Neuromedicine (48), Cardiac medicine (30) wards and Blood donors (30) as healthy controls were investigated for the prevalence of Toxoplasmosis by means of detecting specific IgM antibody against Toxoplasma gondii (T. gondii) employing Enzyme Immuno Assay (EIA). The detection rate of specific IgM antibody against T.

Prevalence of coagulase negative Staphylococcus species among hospital personnel and surgical patients.

Two hundred and fourteen strains of Coagulase negative Staphylococci (CNS) isolated from hospital personnel (114 strains) and patients (100 strains) were identified upto species level. The prevalence rate of CNS in relation to sex, sources and type of specimens were analysed. Most of the CNS strains belonged to S.

Correlation between beta-lactamase production and MIC values against penicillin with coagulase negative staphylococci.

Two hundred strains of coagulase negative staphylococci (CNS) isolated from various clinical specimens (116) and healthy hospital personnel (84) were investigated for the production of beta-lactamases by means of three iodometric techniques and correlated with the minimum inhibitory concentration (MIC) values of penicillin-G by agar dilution technique and disc diffusion technique. One hundred and fifty (75.0%) of the 200 strains tested produced beta-lactamases.