Results 31 to 40 of about 213,529 (332)

Light and CO₂ Modulate the Accumulation and Localization of Phenolic Compounds in Barley Leaves

Antioxidants, 2021
Barley (Hordeum vulgare) accumulates phenolic compounds (PhCs), which play a key role in plant defense against environmental stressors as antioxidants or UV screening compounds.
Lena Hunt, Karel Klem, Zuzana Lhotáková, Stanislav Vosolsobě, Michal Oravec, Otmar Urban, Vladimír Špunda, Jana Albrechtová   +7 more
doaj   +1 more source

Solar irradiance models and measurements: a comparison in the 220 nm to 240 nm wavelength band

, 2011
Solar irradiance models that assume solar irradiance variations to be due to changes in the solar surface magnetic flux have been successfully used to reconstruct total solar irradiance on rotational as well as cyclical and secular time scales. Modelling
Ball, Will T., Krivova, Natalie A., Unruh, Yvonne C.   +2 more
core   +1 more source

Towards a long-term record of solar total and spectral irradiance

, 2009
The variation of total solar irradiance (TSI) has been measured since 1978 and that of the spectral irradiance for an even shorter amount of time. Semi-empirical models are now available that reproduce over 80% of the measured irradiance variations.
Arge, Baliunas, Balmaceda, Balmaceda, Brasseur, Brueckner, Caccin, Camp, Chapman, Crouch, Danilović, Dewitte, Domingo, Egorova, Ermolli, Fleming, Fligge, Fligge, Floyd, Fontenla, Fontenla, Foukal, Frederick, Fröhlich, Fröhlich, Haigh, Haigh, Harder, Harder, Heath, Hickey, Hirzberger, Hudson, Jones, Kariyappa, Kopp, Kopp, Krivova, Krivova, Krivova, Krivova, Krivova, Krivova, Krivsky, Kurucz, Kurucz, Langematz, Lean, Lee, Livingston, Lockwood, Lockwood, Lockwood, N.A. Krivova, Ortiz, Pagaran, Rottman, Rottman, Rozanov, S.K. Solanki, Scafetta, Scherrer, Schove, Siscoe, Skupin, Snow, Solanki, Solanki, Solanki, Solanki, Solanki, Solanki, Solanki, Tanaka, Thuillier, Tlatov, Topka, Unruh, Unruh, Usoskin, Usoskin, Usoskin, Viereck, Viereck, Vögler, Wang, Wenzler, Wenzler, Wenzler, Wenzler, White, Willson, Willson, Willson, Wilson, Woods, Woods, Worden, Y.C. Unruh, Zwaan   +99 more
core   +1 more source

Reconstruction of spectral solar irradiance since 1700 from simulated magnetograms [PDF]

, 2016
We present a reconstruction of the spectral solar irradiance since 1700 using the SATIRE-T2 (Spectral And Total Irradiance REconstructions for the Telescope era version 2) model.
Dasi-Espuig, M., Jiang, J., Krivova, N. A., Solanki, S. K., Unruh, Y. C., Yeo, K. L.   +5 more
core   +1 more source

Process mapping of laser surface modification of AISI 316L stainless steel for biomedical applications [PDF]

, 2009
A 1.5-kW CO2 laser in pulsed mode at 3 kHz was used to investigate the effects of varied laser process parameters and resulting morphology of AISI 316L stainless steel. Irradiance and residence time were varied between 7.9 to 23.6 MW/cm2 and 50 to 167 µs
A.N. Samant, D. Murray, Dermot Brabazon, Evans Chikarakara, H.J. Ronold, J.D. Majumdar, J.D. Majumdar, J.F. Ready, J.S. Selvan, L. Hao, L. Hao, M.M. Shalabi, N. Parvathavarthini, P.A. Dearnley, Sumsun Naher, W.M. Steen, X. Liu, X.L. Wu   +17 more
core   +2 more sources

Analytical Solutions for Current–Voltage Properties of PSCs and Equivalent Circuit Approximation

Eng
Perovksite solar cells have emerged as a promising photovoltaic technology due to their high increasing power conversion efficiency (PCE). However, challenges related to thermal instability and material toxicity, especially in lead-based perovskites ...
Marc Al Atem, Yahia Makableh, Mohamad Arnaout   +2 more
doaj   +1 more source

An Estimate of Changes in the Sun's Total Irradiance Caused by UV Irradiance Variations from 1874 to 1988 [PDF]

, 1990
Enhanced emission from bright solar faculae is a source of significant variation in the sun's total irradiance. Relative to the emission from the quiet sun, facular emission is known to be considerably greater at UV wavelengths than at visible ...
Lean, J.
core   +1 more source

Restorative Dentistry: Dental composite depth of cure with halogen and blue light emitting diode technology [PDF]

, 2009
Objectives To test the hypothesis that a blue light emitting diode (LED) light curing unit (LCU) can produce an equal dental composite depth of cure to a halogen LCU adjusted to give an irradiance of 300 mWcm–2 and to characterise the LCU's light outputs.
Ashworth, Stephen, Jandt, K D, Mills, R W   +2 more
core   +1 more source

Cool Kitchen: Processing Starch and Eggshell Powder into Sustainable Coatings for Passive Daytime Cooling

Advanced Functional Materials, EarlyView.
A food‐grade cooling composite made from starch and recycled eggshell powder offers a scalable, ultra‐low‐cost solution for passive daytime radiative cooling. Easily prepared using basic kitchen tools, this material empowers communities, even in areas with limited infrastructure, to stay cooler during worsening summer heat waves.
Qimeng Song, Evelyn Kubacki, Alexander Berger, Markus Retsch   +3 more
wiley   +1 more source

Solar Irradiance Prediction Method for PV Power Supply System of Mobile Sprinkler Machine Using WOA-XGBoost Model

Machines
Solar energy can mitigate the power supply shortage in remote regions for portable irrigation systems. The accurate prediction of solar irradiance is crucial for determining the power capacity of photovoltaic power generation (PVPG) systems for mobile ...
Dan Li, Jiwei Qu, Delan Zhu, Zheyu Qin
doaj   +1 more source