Results 31 to 40 of about 199,178 (305)

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

Management thresholds shift under the influence of multiple stressors: Eelgrass meadows as a case study

Conservation Letters, 2023
As human activities increase in intensity and extent, ecosystems face growing threats from multiple stressors. Successful management requires identifying measurable targets, which is challenging because of data limitations, nonlinear ecosystem responses,
Jillian C. Dunic, Isabelle M. Côté
doaj   +1 more source

The photosynthetic eco-physiological adaptability of the endangered plant Tetracentron sinense to different habitats and altitudes

Biologia Plantarum, 2023
Tetracentron sinense Oliv, the only tall deciduous tree in the family Tetracentraceae, is listed as a national second-grade key protected plant in China.
R. CHEN, W.L. MAO, W.Y. LI, H.Y. HAN, X.M. ZHANG, X.H. GAN   +5 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

Ca II K spectroheliograms for studies of long-term changes in solar irradiance [PDF]

, 2018
We address the importance of historical full disc Ca II K spectroheliograms for solar activity and irradiance reconstruction studies. We review our work on processing such data to enable them to be used in irradiance reconstructions.
Chatzistergos, Theodosios, Ermolli, Ilaria, Krivova, Natalie A., Solanki, Sami K.   +3 more
core   +2 more sources

Simultaneous Effect of Temperature and Irradiance on Growth and Okadaic Acid Production from the Marine Dinoflagellate Prorocentrum belizeanum

Toxins, 2014
Benthic marine dioflagellate microalgae belonging to the genus Prorocentrum are a major source of okadaic acid (OA), OA analogues and polyketides. However, dinoflagellates produce these valuable toxins and bioactives in tiny quantities, and they grow ...
Lorenzo López-Rosales, Juan Jose Gallardo-Rodríguez, Asterio Sánchez-Mirón, María del Carmen Cerón-García, El Hassan Belarbi, Francisco García-Camacho, Emilio Molina-Grima   +6 more
doaj   +1 more source

The effect of continuous illumination and photoperiods on growth and heterocyst frequency of cyanobacterium Fischerella ambigua from Golestan province [PDF]

فیزیولوژی محیطی گیاهی, 2006
The effect of limited continuous irradiance and photoperiods on survival, growth and heterocyst frequencies of cyanobacterium Fischerella ambigua collected from paddy-fields of Golestan province have been studied at laboratory condition.
Fereshte Vakili, Kayvan Ghorchibeigi, Neda Soltani, Shadman Shokravi   +3 more
doaj   +1 more source

Data-Driven Diagnosis of PV-Connected Batteries: Analysis of Two Years of Observed Irradiance

Batteries, 2023
The diagnosis and prognosis of PV-connected batteries are complicated because cells might never experience controlled conditions during operation as both the charge and discharge duty cycles are sporadic.
Matthieu Dubarry, Fahim Yasir, Nahuel Costa, Dax Matthews   +3 more
doaj   +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

On the Relation between Solar Activity and Clear-Sky Terrestrial Irradiance

, 2012
The Mauna Loa Observatory record of direct-beam solar irradiance measurements for the years 1958-2010 is analysed to investigate the variation of clear-sky terrestrial insolation with solar activity over more than four solar cycles.
A. Hempelmann, A. Ångström, B.G. Mendonca, C. Fröhlich, C.G. Abbot, C.G. Abbot, D.V. Hoyt, D.V. Hoyt, E.G. Dutton, E.G. Dutton, E.G. Dutton, G. Feulner, G. Feulner, G. Feulner, G.W. Allen, H.T. Ellis, L.B. Aldrich, L.J. Gray, M. Lockwood, M. Sato, R.G. Roosen, S. Solomon, W. Weber, W. Weber   +23 more
core   +1 more source