Results 11 to 20 of about 41,512 (263)

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

open access: yesMetabolites, 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   +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

open access: yesActa 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   +1 more
doaj   +1 more source

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

open access: yesAdvances 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

open access: yesRemote 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   +8 more
doaj   +1 more source

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

open access: yesTikrit 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   +3 more
doaj   +3 more sources

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

open access: yesJournal 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   +4 more
doaj   +1 more source

Irradiance gradients

open access: yesACM 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

How Do Different Cocoa Genotypes Deal with Increased Radiation? An Analysis of Water Relation, Diffusive and Biochemical Components at the Leaf Level

open access: yesAgronomy, 2021
The cultivation of cocoa (Theobroma cacao L.) is traditionally managed under shade because of its photosynthetic characteristics; however, its behavior can vary according to the genotype and environmental conditions where it is grown. In this sense, here,
Juan Carlos Suárez   +3 more
doaj   +1 more source

Modelling the Interaction of Illuminations with a Sensor Matrix Used in Vision Systems

open access: yesApplied Sciences, 2023
The article discusses a method of modelling the interaction of industrial illuminators with sensor arrays used in industrial vision systems cameras. The research used a model containing a light source and a sensor matrix.
Justyna Waśniowska, Andrzej Sioma
doaj   +1 more source

Experimental Testing of PV Module Performance

open access: yesTehnički Glasnik, 2021
This study compares the manufacturer's technical data of several PV modules with real measured outdoor technical data. The irradiance effect on several PV modules is examined by the changing a tilt angle and comparing different meteorological situations ...
Mladen Bošnjaković   +2 more
doaj  

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