Results 41 to 50 of about 73,264 (135)
Dosimeters of power luminosity of the ultraviolet radiation "Tenzor"
Технологія та конструювання в електронній апаратурі, 2006 A group of dosimeters for ultraviolet and visible radiation — “Tenzor‑51”, “Tenzor‑52”, and “Tenzor‑53” — has been developed in accordance with the requirements of current regulatory documentation. The basic relative measurement error of these dosimeters
V. K. Butenko +4 more
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Performance Analysis of Air-to-Water Heat Pump in Latvian Climate Conditions
Environmental and Climate Technologies, 2014 Strategy of the European Union in efficient energy usage demands to have a higher proportion of renewable energy in the energy market. Since heat pumps are considered to be one of the most efficient heating and cooling systems, they will play an ...
Kazjonovs Janis +5 more
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Silicic thermally stabilized p–i–n-photodiode
Технологія та конструювання в електронній апаратурі, 2006 A design of a silicon p–i–n photodiode crystal thermostabilized by a Peltier thermoelectric module is proposed and investigated. It is shown that such a design allows the noise current density to remain practically unchanged within the temperature range ...
Yu. G. Dobrovolsky
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Cumhuriyet Science JournalUltraviolet (UV) radiation from the sun can cause significant damage to human skin, leading to both acute and chronic adverse effects. While commercial sunscreens provide protection, increasing consumer concerns about synthetic ingredients have driven ...
Yakup Budak
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Antioxidant activity and sun screening effects of Bacterial melanin
Journal of BioScience and Biotechnology, 2020 The present work was delineated to formulate and evaluate antioxidant and photoprotective properties of melanin produced by Pseudomonas mosseliistrain STSGRDS1 against the purchased fungal melanin STSGRDM1 as standard. Initially,
Sharmila D.Srimathi +5 more
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Photodiode based on GaP sensitized to short-wave region of UV spectrum
Технологія та конструювання в електронній апаратурі, 2012 An algorithm for the simulation and analysis of the parameters that determine the sensitivity of the photodiode surface-barrier structures based on n+–n-GaP–SnO2(F) has been developed.
Yu. G. Dobrovol’skii
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Photodermatoses: prevention and treatment
Медицинский совет, 2018 Increased exposure of the skin to sunlight has many negative effects: premature skin aging (photoaging), the risk of various skin cancers, the appearance of hyperpigmentation, and exacerbation of certain skin diseases.
O. I. Sidorovich, E. A. Tsyvkina
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Jurnal Ilmiah MedicamentoSinar ultraviolet, terutama sinar ultraviolet B (UV-B) dapat menyebabkan terbentuknya radikal bebas yaitu Reactive Oxygen Species (ROS). Daun nangka kaya akan senyawa fenolik seperti flavonoid dengan sifat antioksidan yang baik dan dapat berperan sebagai
Ketut Agus Adrianta +2 more
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Effectiveness of Nivea Sunscreen under Ultraviolet Light
International Scholastic Journal of Science, 2008 The relationship between a sunscreen’s SPF and its absorbance for UV light of wavelength 240 to 320 was investigated. The investigation was conducted by diluting sunscreens with SPF's of 20, 30 and 50 and placing the solution in a spectrophotometer where
Piset Virachunya, Andrew Pinvises
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