Synthesis of Mg doped ZnO cauli-flower nanostructures using chemical spray and its investigation for ammonia gas sensing at room temperature.

In this study, we report the synthesis, optical characterization and ultra-sensitive ammonia gas sensing properties of Mg-doped ZnO cauliflower like nanostructures obtained via chemical spray pyrolysis technique. The morphological and structural properties of the prepared films were investigated by Field Emission Scanning electron microscope (FESEM) and X-ray diffraction (XRD). Gas sensing and optical characterizations were carried out using Keithley electrometer and Uv-Vis.

Effect of metal ion on optical, photoluminescence, morphological, and photocatalytic properties of ZnS nanoparticles.

The semiconducting materials of pure zinc sulfide (ZnS), 2.5 wt%, 5.0 wt%, 7.

Pre-treatment delay and out of pocket expenses by notified new tuberculosis patients in an Indian mega city.

Background: Study was carried out to find out delay from onset of symptoms and out of pocket expenditure (OOPE) until initiation of anti-TB treatment (ATT) by new Tuberculosis (TB) patients registered in public health facilities in Bengaluru.

Methods: Notified patients (N = 228) selected purposively were interviewed at initiation of ATT regarding number and type of facilities visited and delay in initiating ATT. OOPE was elicited separately for in- and out-patient visits, towards consultation, purchase of medicines, diagnostic tests, transportation, hospitalization and food.

Health seeking and knowledge about tuberculosis among persons with pulmonary symptoms and tuberculosis cases in Bangalore slums.

Setting: Bangalore city slums, India.

Objectives: To ascertain 1) health-seeking behaviour patterns in persons with pulmonary symptoms; 2) pathways followed by pulmonary tuberculosis (PTB) cases until diagnosis and treatment; and 3) their knowledge about TB-symptoms, cause, mode of transmission, diagnosis and treatment.

Methods: In selected slums, persons with pulmonary symptoms identified during house visits and residents with PTB were interviewed using pre-tested, semi-structured questionnaires.

Antimicrobial activity of root extracts of dalbergia spinosa roxb.

The different concentrations of benzene, alcoholic and aqueous root extracts of Dalbergia spinosa Roxb. (Fabaceae) have been studied for its anitmicrobial activity against certain gram positive (Staphylococcus aureus), gram negative (Pseudomonas aeruginosa, Klebsiellapneumoniae, Escherichia coli) bacteria and fungi (Candida albicans) using cup plate method. Benzene, alcoholic extracts(50, 75 and 100 μg/ml) and aqueous extract only at higher concentration (100 μg / ml) exhibited significant activity.