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Aeromanas salmonicida from human blood (Tewari et al., 2014). Case ReportA 12-year-old Muslim female child, visited medicine Out Patient Department (OPD), at AIIMS, Jodhpur in December 2015 with complaints of off and on low grade fever, pain abdomen associated with weakness and malaise for last 20 days. There was no history of chills and rigor, sore throat, diarrhea, urinary discomfort, any other

Hydrogels have emerged as important soft materials with numerous applications in fields including biomedicine, biomimetic smart materials, and electrochemistry. Because of their outstanding photo-physical properties and prolonged colloidal stability, the serendipitous findings of carbon quantum dots (CQDs) have introduced a new topic of investigation for materials scientists. CQDs confined polymeric hydrogel nanocomposites have emerged as novel materials with integrated properties of the individual constituents, resulting in vital uses in the realm of soft nanomaterials. Immobilizing CQDs within hydrogels has been shown to be a smart tactic for preventing the aggregation-caused quenching effect and also for manipulating the characteristics of hydrogels and introducing new properties. The combination of these two very different types of materials results in not only structural diversity but also significant improvements in many property aspects, leading to novel multifunctional materials. This review covers the synthesis of doped CQDs, different fabrication techniques for nanostructured materials made of CQDs and polymers, as well as their applications in sustained drug delivery. Finally, a brief overview of the present market and future perspectives are discussed.

Introduction: Microbiota of respiratory tract may be responsible for acute exacerbation of bronchial asthma and chronic bronchitis. So the present study was carried out to find out specific bacterial etiological agents' involvement in acute exacerbation of these diseases. Materials and Methods: Sputum samples from patients of bronchial asthma, chronic bronchitis during acute exacerbation and endotracheal aspirates from control cases were processed to isolate the microbiota of respiratory tract using quantitative methods after liquefying and diluting the samples. Significant and insignificant bacterial counts from the samples were determined. Grading of pus cells and bacterial morphology was seen by Gram's staining. Results: Pus cell grading of 1+ to 3+ were seen in the both cases of bronchial asthma and chronic bronchitis whereas pus cells were not found in control cases. Percentage of microorganisms by Gram's staining in asthmatics, chronic bronchitis, and controls cases were 93.33%, 86.67%, 76.67% respectively. Among the pathogenic bacteria, percentage of significant count of Staphylococcus aureus and Klebsiella pneumonia were found to be high in chronic bronchitis cases when compared these pathogens in asthmatics. In bronchial asthma cases, the percentage of significant count of Streptococcus pyogenes, Proteus mirablis and Pseudomonas aeruginosa were high as compared to chronic bronchitis cases. In chronic bronchitis patients and asthmatics, significant count of non-pathogens were 16.67% and 13.33% respectively. Conclusion:The quantitative cultures showing significant numbers as 10 4 /ml and 10 7 /ml of pathogenic and nonpathogenic bacteria respectively are found to be associated with acute exacerbation of bronchial asthma and chronic bronchitis.