Solar lights

The aim of this study was to investigate the photocatalytic activity improving of TiO2, Ag-TiO2 as photocatalysts which immobilized on perlite granules to degrade MB from synthetic wastewater under solar light irradiation. The photocatalytic mechanisms induced by solar light responsive Ag-TiO2/perlite composite was also proposed to demonstrate the photodegradation of MB cationic dye.

7p vikwong 29-09-2024 3 1   Download

WO3/Ag3VO4 photocatalyst was synthesized for benefiting the visible region of solar spectrum for degradation of antibiotic pollutant. The prepared catalyst was characterized by using scanning electron microscope (SEM), X-ray diffraction (XRD), infrared spectroscopy (IR) and energy-dispersive X-ray spectroscopy (EDX).

6p vikwong 29-09-2024 3 1   Download

Wet periods are evidenced by dark olive green mixed lithology (sandy, clay, and silts) and high values in MS and log(Sr/Ca). On the other hand, dry periods are associated with light olive green clayey mud lithology and high values in log(Ca/K). We relate the wet periods to negative North Atlantic Oscillation (NAO–) and the dry periods to NAO+. Additionally, all wet periods are related with time of low solar activity and dry periods, except Dalton Minimum, are related with periods of high solar activity.

10p tanmocphong 29-01-2022 11 1   Download

Thesis objectives and tasks: Establishing a mathematical model, putting forward an algorithm applied for seeking the solar system's irradiance equalization configuration under the heterogeneous lighting conditions; establishing a mathematical model, putting forward an algorithm applied for choosing an optimal circuit switching method, from the initial connection configuration to the irradiance equalization configuration.

26p capheviahe27 23-02-2021 23 4   Download

Two-dimensional (2D) perovskites are a new class of functional materials that may find applications in various technologically important areas. Due to the better moisture and illumination stability, layered perovskites can be the next generation of materials for solar light-harvesting applications, as well as for light emitting diodes (LEDs).

12p tamynhan4 06-09-2020 16 2   Download

Photosynthesis is able to convert solar energy into chemical energy in the form of biomass, but the efficiency of photosynthetic solar energy conversion is low. Chlorophyll fluorescence measurements are rapid, nondestructive, and can provide a wealth of information about the efficiencies of the photosynthetic light reaction processes.

19p vishikamaru2711 29-04-2020 13 1   Download

Grid-connected photovoltaic power systems are power systems energised by photovoltaic panels which are connected to the utility grid. Grid-connected photovoltaic power systems comprise of Photovoltaic panels, MPPT, solar inverters, power conditioning units and grid connection equipments. Unlike Stand-alone photovoltaic power systems these systems do not have batteries. When conditions are right, the grid-connected PV system supplies the excess power, beyond consumption by the connected load, to the utility grid.[1]...

20p rose_12 04-12-2012 87 17   Download

Why do objects lose their color with depth? The colors other than blue (and green) are absorbed by the water molecules in the first few meters only blue (and green) are reflected Sound is transmitted better Sound is transmitted better in water than it is in air Sound velocity in the ocean is about 1500 m/s, or about 4 times its speed in air Sound velocity increases with pressure and temperature

37p thachthaoxanh 24-08-2011 56 5   Download

Solar energy, light and heat radiation from the Sun, has been exploited by humans since ancient times using a variety of technology development than ever before. Solar radiation along with secondary resources of energy like wind and solar energy, water power and biomass, make the most of renewable energy available on earth. Only a tiny fraction of the available solar energy is used.

202p minhhai20789 26-04-2011 249 117   Download

Immunologic Effects Exposure to solar radiation causes local (inhibition of immune responses to antigens applied at the irradiated site) and systemic (inhibition of immune responses to antigens applied at remote unirradiated sites) immunosuppression. The action spectrum for UV-induced immunosuppression closely mimics the absorption spectrum of DNA. Pyrimidine dimers in LCs may inhibit antigen presentation. The absorption spectrum of epidermal urocanic acid closely mimics the action spectrum for UV-B-induced immunosuppression.

7p konheokonmummim 03-12-2010 83 5   Download

Harrison's Internal Medicine Chapter 57. Photosensitivity and Other Reactions to Light Solar Radiation Sunlight is the most visible and obvious source of comfort in the environment. The sun provides the beneficial effects of warmth and vitamin D synthesis; however, acute and chronic sun exposure also have pathologic consequences. Few effects of sun exposure beyond those affecting the skin have been identified, but cutaneous exposure to sunlight is the major cause of human skin cancer and can exert immunosuppressive effects as well.

5p konheokonmummim 03-12-2010 83 6   Download