Results 31 to 40 of about 1,094,343 (346)

Object-Based Greenhouse Mapping Using Very High Resolution Satellite Data and Landsat 8 Time Series [PDF]

open access: yes, 2016
Greenhouse mapping through remote sensing has received extensive attention over the last decades. In this article, the innovative goal relies on mapping greenhouses through the combined use of very high resolution satellite data (WorldView-2) and Landsat
Aguilar Torres, Fernando José   +4 more
core   +5 more sources

Comparison of spectral indices extracted from Sentinel-2 images to map plastic covered greenhouses through an object-based approach

open access: yesGIScience & Remote Sensing, 2022
One of the most important challenges of agriculture today is increasing its productivity gains, while controlling its environmental footprint. Because of that plastic covered greenhouses (PCG) mapping via remote sensing is receiving a great attention ...
M. A. Aguilar   +4 more
semanticscholar   +1 more source

Fans For Greenhouses

open access: yesEDIS, 2021
Fans are used in processing applications involved with drying, ventilating, heating, cooling, aspirating, elevating, and conveying. Processing and other agricultural activities requiring fans are greatly increasing.
Jonathan A. Watson   +5 more
doaj  

THC Yield and Greenhouse Cover Materials: Optimizing the Profit of Medical Cannabis

open access: yesBulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2021
Even though Delta-9-tetrahydrocannabinol (THC) is a psychoactive substance, studies indicate that it has therapeutic properties. Moreover, the modification in Greece legislation regarding the legalization of cannabis has resulted in new business ...
Maria KOUSOYLA   +9 more
doaj   +1 more source

Comparison of Fossil Fuel and Geothermal Energy Sources Used for Greenhouse Heating

open access: yesTurkish Journal of Agriculture: Food Science and Technology, 2016
The most extensive and effective environmentally controlled production takes place in greenhouses. New innovations and developments for greenhouse production go hand in hand with efforts for sustainability.
Abdullah Nafi Baytorun   +2 more
doaj   +1 more source

Dynamic Response Analyses of Plastic Greenhouse Structure considering Fluctuating Wind Load

open access: yesAdvances in Civil Engineering, 2021
Wind load is one of the main factors of plastic greenhouse collapse. To solve the dynamic response problem of greenhouses under wind load and determine the dangerous section of a skeleton structure, the investigated lump method is presented for the ...
Yingchun Jiang   +4 more
doaj   +1 more source

Comparison of climate and production in closed, semi-closed and open greenhouses [PDF]

open access: yes, 2011
A (semi-)closed greenhouse is a novel greenhouse with an active cooling system and temporary heat storage in an aquifer. Air is cooled, heated and dehumidified by air treatment units. Climate in (semi-)closed greenhouses differs from that of conventional
Dieleman, J.A.   +5 more
core   +2 more sources

Analysis of Wind Pressure Coefficients for Single-Span Arched Plastic Greenhouses Located in a Valley Region Using CFD

open access: yesAgronomy, 2023
The wind pressure coefficient is essential for calculating the wind loads on greenhouses. The wind pressure on single-span arched greenhouses built in valleys differs from those in plain regions.
Zongmin Liang   +7 more
doaj   +1 more source

Integration of Active Solar Thermal Technologies in Greenhouses: A Mini Review

open access: yesFrontiers in Energy Research, 2021
Traditional agricultural greenhouses have been used to grow vegetables in the winter without any auxiliary heating. However, crop production is highly influenced by soil and air temperatures, humidity, and solar radiation.
Ding Ding
doaj   +1 more source

The Effect of Diffuse Light on Crops [PDF]

open access: yes, 2008
Light is not evenly distributed in Dutch glass greenhouses, but this can be improved with diffuse light. Modern greenhouse coverings are able to transform most of the light entering the greenhouse into diffuse light. Wageningen UR Greenhouse Horticulture
Dueck, T.A.   +3 more
core   +2 more sources

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