FORMULATE AND EVALUATE GEL CONTAINING NANOSTRUCTURED LIPIDS OF PONGAMIA PINNATA

The objective of present study was to design development and evaluatenanostructure lipid carriers based gel of Pongamia pinnata extract for topical application. Nanostructured lipid carriers (NLC) established topical gel of Pongamia pinnata extract was formulated for treatment of wound healing activity, NLC were fabricated by melt dispersion ultra-sonication method. NLC containing mixtures of Glyceryl monostearate as solid lipid and Karanj Oil as liquid- lipid and the Tween 80 as surfactant. The particle size of NLC was found between 99.98 and 155.65 nm with PDI varied from 0.256 to 0.349 and zeta potential found between -21.65 to -26.68. The NLC dispersions were gelled by utilizing gelling agent carbopol which have compatibility with nano-particulate dispersion.. From stability study it revealed that formulation is stable and used for topical application

Detection of Environmental Spread of SARS-CoV-2 and Associated Patient Characteristics

Understanding transmission of SARS-CoV-2 informs infection prevention practices. Air sampling devices were placed in patient hospital rooms for consecutive collections with and without masks. With patient mask use, no virus was detected in the room. High viral load and fewer days from symptom onset were associated with viral particulate dispersion.

Strategies for the environmental recovery of abandoned mining areas

<p>Abandoned mining areas are a clear example of the failure of the different administrations to solve the environmental problems they pose, due to the lack of unified legislation and management and the activity of geological processes. It is therefore important to have a clear vision of the environmental problems that occur and the possible actions to solve them.</p><p>The Sierra Minera (Cartagena, SE Spain) presents situations of risk of soil contamination that coincide with those areas with the highest content of soluble and/or bioavailable PTEs (potentially toxic elements) for the health of people and ecosystems, especially in those sites of concentration of polluting sources (flotation mud pools and heterogeneous dumps), with a very fine texture. These areas present numerous points with an urgent need for risk management due to the possible mobilization in different environmental conditions of arsenic and heavy metals, with a control of both soluble and particulate dispersion. Special interest presents arsenic mobilisation in an acidic environment together with reducing situations and the presence of organic matter (waterlogged marshes).</p><p>The recovery technologies to be applied in the Sierra Minera require a great diversity of techniques, depending on the uses of the land. In the contamination foci it is necessary to carry out actions with containment, stabilisation and solidification technologies in situ. Phytoremediation techniques, given the high content of PTEs present, may not all be appropriate in the different situations. Phytoextraction should only be applied in areas with low concentrations of PTEs, and by plants that do not transfer to their aerial part, to avoid the risk of ingestion by animals. Phytostabilisation will be important in combined techniques, in order to ensure that contaminants are not transferred to the environment, and by non-accumulating plants in the aerial part. Wetlands can be a complementary solution to the projects developed at the heading of wadis, providing a double purpose, natural attenuation of contamination and lamination of turbulence and floods.</p><p>A generic overview is given of the most important regeneration approaches from a geochemical point of view, without going into structural solutions, selecting those technologies that are most suitable to the environment in which they are located, trying to imitate natural attenuation processes and using eco-efficient and sustainable materials.</p>

Studying the influence of moving vehicle on air pollutant dispersion through environmental chamber

The risk of air pollutants like particulate matters on human beings has been widely reported. One main concern is its health impact on people through direct emission or resuspension. In China with the quick growth in private car ownership, the worries about the influence of the moving vehicles on particulate dispersion is growing. In this study, the influence of a moving object on wick formation and particulate dispersion was investigated. An advanced numerical model was developed, in which the unsteady Eulerian RANS model was applied for simulating the airflow, the modified drift-flux model for modelling particulate dispersion, and the dynamic mesh model for mimicking the moving vehicle. The results show that the vehicular movement induces three noticeable vortexes around the moving body, and the faster the running speed, the stronger the secondary airflow generated.