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The biocompatible Chitosan/Zinc oxide (CS/ZnO) nanocomposites (NCs) material was synthesized via a simple and versatile microwave assisted wet synthesis method. After the incorporation of CS in the ZnO nanoparticles (NPs), the crystalline structure of the modified NPs was retained in the NCs and it was clearly exposed in the X-ray diffraction (XRD) measurements. The Zeta potential measurement of CS/ZnO nanocomposites (NCs) shows more stability than ZnO NPs. The Field Emission Scanning Electron Microscopy (FE-SEM) measurements depict the formation of cauliflower like structure after the integration of CS in the ZnO NPs. The interaction between ZnO molecules in CS becomes more compact and is confirmed in the Fourier Transform Infrared Spectroscopy (FTIR) measurement. Bacterial activity was increased gradually with the CS/ZnO content and was analytically stronger against Gram-positive cells. This study has conclusively proved that reactive oxygen species (ROS) such as •OH, •O2− , and H2O2 were significantly produced from aqueous suspension of CS/ZnO and were primarily responsible for the bactericidal activity.

Compared with bulk materials, nanoparticles have many outstanding properties, like optical, electronic, catalytic, and magnetic properties. Here the magnetite (Fe 3 O 4 ) nanoparticles and biopolymer functionalized magnetite nanoparticles were synthesized by simple co-precipitation by using an aqueous solution containing ferrous (Fe 2+ ) and ferric (Fe 3+ ) ion salts in an alkaline media with poly (ethylene glycol) (PEG 400) as the surfactant. Both bare and Chitosan-coated iron oxide nanoparticles (IONPs) were subsequently characterized and evaluated for their antibacterial activity against Escherichia coli KL226. The XRD result indicates the formation of Fe 3 O 4 nanoparticles and Chitosan (CS) coated Fe 3 O 4 nanoparticles. Fourier transform infrared spectroscopy (FT-IR) studies confirm the bonding of the Chitosan polymer with Fe 3 O 4 nanoparticles. The magnetic properties of the samples were measured by vibration sample magnetometer that confirmed ferromagnetic behaviour of magnetite nanoparticles at room temperature. The antibacterial test showed inhibition against E. coli with significant antagonistic activity.

Zinc Oxide nanoparticles (ZNPs) and CS/Zinc oxide nanocomposites (CS/ZnO NCs) were successfully synthesized by wet chemical method. Formation of ZNPs and the interaction of CS/ZnO NCs were characterized by X-ray diffraction (XRD), Zeta potential, and Transmission Electron Microscopy (TEM) techniques. Thermal stability of the prepared samples was characterized by Thermogravimetric Analysis (TGA). TEM images shows the interaction between the ZNPs and CS polymer and the particles has spherical like structure with average crystallite size of 22 nm and is in good agreement with XRD results. The aim of this study was to investigate the attachment of these nanoparticles with Escherichia coli (E. coli) bacterial outermost cell membrane and their mode of action against these bacterial strains by agar well diffusion method and resazurin dye reduction method. Both the test materials synthesized revealed resistivity against E. coli up to 6 mg/mL.

Objective: In this paper, we deliver a concept based on image and video processing designs on behalf of eyesight else vision find out. Methods: The inducement of the study is for disabled people, without their hands. The vision checkup method is by using the mobile phone interaction. It utilizes the detected face location and vision detection is based on mobile phones for controlling eyelids state (close or open). Findings: This vision checkup method is used to show the improvement of accuracy of detection. In this mobile application, the light effect and the spaces among the disabled person eyes is tracking. The correctness of vision detection will be given by the usage of mobile devices. In existing, phone-based vision test for patients who wants to track their eyesight in their place itself, this type of gadgets could help to track people who are having defects in their eye before they lost more vision, and take the treatment in proposed this same tool could help the disabled persons also by using image processing of vision detection in eyelids state (close or open) detection. Improvements: The drawbacks are reduced in this proposed system. Finally, it provides the 99% of result for the complete detection of accurateness.