Results 21 to 30 of about 609,366 (250)

A Supervisory Control Strategy for Improving Energy Efficiency of Artificial Lighting Systems in Greenhouses

open access: yesEnergies, 2021
Artificial lighting systems are used in commercial greenhouses to ensure year-round yields. Current Light Emitting Diode (LED) technologies improved the system efficiency.
Gianluca Serale   +3 more
doaj   +1 more source

Approaches for mitigating the environmental impact of greenhouse horticulture [PDF]

open access: yes, 2010
Greenhouse horticulture creates environmental issues of different kinds. Use of energy for heating and lighting and pollution by pesticides and nutrients are major known problems, but impacts on the landscape and light emissions from supplementary ...
Bergstrand, Karl-Johan
core   +1 more source

Morphological and Physiological Traits of Greenhouse-Grown Tomato Seedlings as Influenced by Supplemental White Plus Red versus Red Plus Blue LEDs

open access: yesAgronomy, 2022
The relatively low light intensity during autumn–winter or early spring and inclement weather such as rain or fog may lead to extended production periods and decreased quality of greenhouse-grown tomato seedlings. To produce high-quality tomato seedlings
Geng Zhang   +6 more
doaj   +1 more source

Light Spectra and Root Stocks Affect Response of Greenhouse Tomatoes to Long Photoperiod of Supplemental Lighting

open access: yesPlants, 2021
Plant biomass and yield are largely dictated by the total amount of light intercepted by the plant (daily light integral (DLI)—intensity × photoperiod).
Jason Lanoue   +5 more
doaj   +1 more source

Energy efficient facade lighting : highlighting facade structure [PDF]

open access: yes, 2014
The project set out to proof that a conventional optical fibre lighting system for highlighting the structure of a façade can be operated more energy-efficiently through the substitution of the projector using a metal halide reflector lamp by a laser ...
Hordijk, Truus,   +27 more
core   +2 more sources

Development and Implementation of an IoT-Enabled Optimal and Predictive Lighting Control Strategy in Greenhouses

open access: yesPlants, 2021
Global population growth has increased food production challenges and pushed agricultural systems to deploy the Internet of Things (IoT) instead of using conventional approaches.
Shirin Afzali   +3 more
doaj   +1 more source

Dimming strategies for open office lighting : User experience and acceptance [PDF]

open access: yes, 2018
Sensor-triggered control strategies can limit the energy consumption of lighting by considering the presence of users in the office and dimming lighting down when it is not needed. In multi-user offices, the application of occupancy-based dimming at room
Creemers, P.,   +26 more
core   +2 more sources

Evaluation of Blue Light Blocking Glasses under Sunlight and LEDs

open access: yesHortTechnology
There have been multiple claims regarding detrimental effects of blue light on human health. Protective glasses sold as “blue light blocking” have been recommended for use under electric lights.
Steven M. Jachym*   +2 more
doaj   +1 more source

Recommended cucumber hybrids for growing in greenhouses under conditions artificial lighting

open access: yesОвощи России, 2021
For plants, light is a determining factor in growth and development. The use of artificial lighting in greenhouses has a huge impact on the yield, cost and timing of the receipt of vegetable products.
V. G. Korol
doaj   +1 more source

Thematische collectie: Greenhouse Advies

open access: yes, 2017
Overzicht van de gearchiveerde projecten van Greenhouse ...
Greenhouse Advies
core   +1 more source

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