Results 41 to 50 of about 2,120,833 (375)

UV solar irradiance low during recent solar minimum [PDF]

Eos, Transactions American Geophysical Union, 2011
Solar irradiance, which varies with the 11‐year solar cycle and on longer time scales, can affect temperatures and winds in the atmosphere, influencing Earth's climate. As the Sun currently wakes up from a period of low sunspot activity, researchers want to know how irradiance during the recent solar minimum compares to historical levels.
openaire   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

Observations of broadband solar UV-A irradiance at Santa Maria, Brazil (29°S, 53° W) [PDF]

Geofísica Internacional, 2004
Observations of broadband solar UV-A irradiance (320-400 nm) were made at Santa Maria, Brazil (29° S, 53° W) between September 1993 and December 1996. Two different measurement techniques were used, the direct sun (DS) with the sensor pointed directly to
S. Okano, K. Makita, N. J. Schuch, E. Echer   +3 more
doaj  

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

Influence of Atmospheric Parameters on Biologically Effective Solar UV Irradiance

Annals of West University of Timisoara: Physics
Solar ultraviolet (UV) radiation has various effects on human beings, both positive and negative. Since solar UV spectral radiation is only rarely monitored, modeling of biologically effective solar UV spectral irradiance became a common practice in ...
Codrean Andrea-Florina, Paulescu Marius
doaj   +1 more source

Quantification of Indoor Ocular Exposure to Solar Ultraviolet Light With Four Room Orientations: Using a Model Monitor Embedded in a Manikin Head

IEEE Access, 2020
Solar ultraviolet (UV) radiation is an unavoidable physical environmental factor that contributes to a variety of eye diseases. Exposure to indoor solar UV radiation is an essential component of individual ocular UV exposure.
Hui Hua, Rentong Chen, Tianyao Yang, Dan Yang, Yan Deng, Yang Liu   +5 more
doaj   +1 more source

The total solar irradiance, UV emission and magnetic flux during the last solar cycle minimum [PDF]

, 2013
We have analyzed the total solar irradiance (TSI) and the spectral solar irradiance as ultraviolet emission (UV) in the wavelength range 115-180 nm, observed with the instruments TIM and SOLSTICE within the framework of SORCE (The Solar Radiation and ...
Benevolenskaya, E. E., Kostuchenko, I. G.   +1 more
core   +3 more sources

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source

A self-roughened and biodegradable superhydrophobic coating with UV shielding, solar-induced self-healing and versatile oil–water separation ability

Journal of Materials Chemistry A, 2019
Self-roughened and biodegradable superhydrophobic fabrics with solar-induced self-healing property are constructed for versatile and efficient oil–water separation.
Xiuli Dong, Shouwei Gao, Jianying Huang, Shuhui Li, Tianxue Zhu, Yan Cheng, Yan Zhao, Zhong Chen, Y. Lai   +8 more
semanticscholar   +1 more source