Solar irradiance

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  • With a global average irradiance of 342 W/m2, the Sun is by far the largest source of energy for planet Earth. In comparison, the internal energy produced by Earth itself is only about 0.087 W/m2 (Pollack et al., 1993), which in turn is 3.5 times larger than the 0.025 W/m2 of heat produced by the burning of fossil fuels. About 31% (31 units) of the solar energy which arrives at the top of the atmosphere is reflected back to space by scattering from clouds, aerosols, and the Earth’s surface. Almost 20 units of solar radiation are absorbed in the atmosphere....

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  • Quá trình phân hủy quang xúc tác của các thuốc trừ sâu cơ phốt pho như Methamidophos (Me) và Monocrotophos (Mo) được nghiên cứu trên thiết bị phản ứng 2 lớp mô phỏng ánh sáng mặt trời (DSSR). Mười hai loại xúc tác thương mại có thành phần chính là TiO2 đã được thử hoạt tính ở các nồng độ 500 và 1000 mg/l. Sự ảnh hưởng của pH cũng được khảo sát ở các giá trị 3, 7 và 12.

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  • A wide variety of detail regarding genuine and proprietary research from distinguished authors is presented, ranging from new means of evaluation of the local solar irradiance to the manufacturing technology of photovoltaic cells. Also included is the topic of biotechnology based on solar energy and electricity generation onboard space vehicles in an optimised manner with possible transfer to the Earth. The graphical material supports the presentation, transforming the reading into a pleasant and instructive labor for any interested specialist or student....

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Efficient Performance of Electrostatic SprayDeposited TiO2 Blocking Layers in Dye-Sensitized Solar Cells after Swift Heavy Ion Beam Irradiation

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  • This chapter reviews some of the basic magnitudes of solar radiation and some of the basics of PSpice. A brief description of a photovoltaic system is followed by definitions of spectral irradiance, irradiance and solar radiation. Basic commands and syntax of the sentences most commonly used in this book are shortly summarized and used to write PSpice files for the AM1 SG and AM0 sun spectra, which are used to plot the values of the spectral irradiance as a function of the wavelength and compare them with a black body radiation.

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  • 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.

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