Results 11 to 20 of about 199,178 (305)

Theoretical Investigations on Shadow Band Correction Factors for Diffuse Radiation under Isotropic Conditions without Approximation

Energies, 2022
The precise measurement for irradiance is important for the performance evaluations of solar systems, because both beam and diffuse radiation measurements must be known to calculate the efficiency of a solar system. One of the widely used instruments for
Haiying Cheng, Xuan Zhang, Ziqian Chen, Wenhong Sun, Kaiyan He, Hongfei Zheng, Yanxiu Tang   +6 more
doaj   +1 more source

Outdoor Inclined Plastic Column Photobioreactor: Growth, and Biochemicals Response of Arthrospira platensis Culture on Daily Solar Irradiance in a Tropical Place

Metabolites, 2022
Implementation of outdoor photobioreactors has been challenged by an extremely oversaturated daily peak of solar irradiance. This study aims to understand the role of column size and paranet shading as well as to investigate the most convenient light ...
Tjandra Chrismadha, Awalina Satya, Ika Atman Satya, Rosidah Rosidah, Azalea Dyah Maysarah Satya, Ratih Pangestuti, Ardiyan Harimawan, Tjandra Setiadi, Kit Wayne Chew, Pau Loke Show   +9 more
doaj   +1 more source

Effects of sucrose and irradiance on germination and early gametophyte growth of the endangered tree fern Dicksonia sellowiana Hook (Dicksoniaceae) Efeito da sacarose e irradiância na germinação e crescimento inicial do gametófito da samambaia arbórea Dicksonia sellowiana Hook (Dicksoniaceae) em perigo de extinção

Acta Botânica Brasílica, 2004
It is an endangered tree fern that grows in mixed umbrophylus forests in the tropics. Sterilized spores were germinated at 25 ± 2ºC under a 16-hour photoperiod, in Dyer and MS medium supplemented with 0 to 5% sucrose.
Gladys Daniela Rogge Renner, Áurea Maria Randi   +1 more
doaj   +1 more source

Irradiance gradients

ACM SIGGRAPH 2008 classes, 2008
A new method for improving the accuracy of a diffuse interreflection calculation is introduced in a ray tracing context. The information from a hemispherical sampling of the luminous environment is interpreted in a new way to predict the change in irradiance as a function of position and surface orientation.
Ward, Gregory J., Heckbert, Paul S.
openaire   +2 more sources

Comparison of Decadal Trends among Total Solar Irradiance Composites of Satellite Observations

Advances in Astronomy, 2019
We present a new analysis of the two-decade-old controversy over interpretation of satellite observations of total solar irradiance (TSI) since 1978 and the implications of our findings for TSI as a driver of climate change.
Nicola Scafetta, Richard C. Willson
doaj   +1 more source

Shortwave Radiance to Irradiance Conversion for Earth Radiation Budget Satellite Observations: A Review

Remote Sensing, 2021
Observing the Earth radiation budget (ERB) from satellites is crucial for monitoring and understanding Earth’s climate. One of the major challenges for ERB observations, particularly for reflected shortwave radiation, is the conversion of the measured ...
Jake J. Gristey, Wenying Su, Norman G. Loeb, Thomas H. Vonder Haar, Florian Tornow, K. Sebastian Schmidt, Maria Z. Hakuba, Peter Pilewskie, Jacqueline E. Russell   +8 more
doaj   +1 more source

Which solar EUV indices are best for reconstructing the solar EUV irradiance ? [PDF]

, 2007
The solar EUV irradiance is of key importance for space weather. Most of the time, however, surrogate quantities such as EUV indices have to be used by lack of continuous and spectrally resolved measurements of the irradiance. The ability of such proxies
Aubry, Cebula, Chatfield, Crane, Crane, Deland, Donnelly, Donnelly, Dudok de Wit, F. Auchère, Floyd, Harvey, Heath, Hedin, Hinterregger, J. Aboudarham, J. Lilensten, Kondrashov, Kretzschmar, Lathuillère, Lean, M. Kretzschmar, P.-O. Amblard, Rottman, T. Dudok de Wit, Thuillier, Tobiska, Viereck, Woods   +28 more
core   +5 more sources

Effect of Colored Filters on PV Panels Temperature and Performance under Baghdad Meteorological Condition

Tikrit Journal of Engineering Sciences, 2018
In this work, the influence of colors of filters upon the photovoltaic panels rising temperature and electrical performance was studied under BaghdadMeteorological Condition.
Abdulmunem R. Abdulmunem , Abdullateef A. Jadallah, Hisham A. Hoshi , Mohammed H. Jabal   +3 more
doaj   +3 more sources

Seed germination and emergence of Eragrostis tenuifolia (A. Rich.) Hochst. ex Steud. in response to environmental factors

Journal of Plant Protection Research, 2016
Eragrostis tenuifolia is a weed species that is gaining ground in Brazil. This weed occurs in pastures, grasslands, crop fields, and roadsides. The objective of this study was to examine the effects of different environmental factors on E.
Hertwig Bittencourt Henrique von, Silva Bonome Lisandro Tomas da, Bortoli Pagnoncelli Fortunato de, Lana Marcos Alberto, Trezzi Michelangelo Muzell   +4 more
doaj   +1 more source

Modification of light utilization for skeletal growth by water flow in the scleractinian coral Galaxea fascicularis [PDF]

, 2011
In this study, we tested the hypothesis that the importance of water flow for skeletal growth (rate) becomes higher with increasing irradiance levels (i.e.
Kranenbarg, S., Osinga, R., Schutter, M., Verreth, J.A.J., Wijffels, R.H.   +4 more
core   +3 more sources