Results 11 to 20 of about 992,242 (297)
Addressing the demands of agricultural resource digitization and facility crop monitoring, precise extraction of plastic greenhouses using high-resolution remote sensing imagery demonstrates pivotal significance for implementing refined farmland ...
Yuguang Chang +4 more
doaj +2 more sources
Propagation Characteristics of Radio Wave in Plastic Greenhouse
In order to realize the deployment of wireless sensor network in large areas of plastic greenhouses. The propagation characteristics of radio wave in plastic greenhouse were studied. The Received Signal Strength Index (RSSI) in greenhouse and between greenhouses were studied, and the logarithmic path loss model for RSSI was established.
Jizhang Wang, Yuli Peng, Pingping Li
openaire +3 more sources
Mapping greenhouse plastic wastes in the west region of Portugal [PDF]
Plastic materials are used in many applications in agriculture, as greenhouse and tunnel covering films, direct coverings, shading and protective nets, irrigation pipes, fertilizers bags, pots and others. In Mediterranean countries, plastic film is the most common greenhouse covering material.
Nanna, M. +4 more
openaire +5 more sources
Among the many sources of plastic contamination, greenhouse agriculture is a major contributor due to its intensive use of plastic materials. This study examines plastic waste in one of the world's leading greenhouse farming regions.
Marina Nuñez-Rubio +9 more
doaj +2 more sources
Dynamic Response Analyses of Plastic Greenhouse Structure considering Fluctuating Wind Load
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 +2 more sources
Plastic greenhouses play an important role in vegetable cultivation in China. While evaluations have attributed perfluoroalkyl acid contamination in greenhouse vegetables primarily to irrigation water, the potential contribution from greenhouse plastic ...
Yiran Zhou +4 more
doaj +2 more sources
Computational Fluid Dynamics-Based Simulation of Ventilation in a Zigzag Plastic Greenhouse
Zigzag plastic greenhouses are a type of greenhouse with a high natural ventilation capacity, and the number and quantities of their roof vents affect their ventilation and cooling effect.
Yu Zhang +5 more
doaj +2 more sources
With optimized-component of multi-span plastic greenhouse structure, author established different span-number's structure model, and analyzed model structure in the same load condition by use of optimum structural design theory and software of finite ...
ZHENG Jin-tu +3 more
doaj +1 more source
Extracting Plastic Greenhouses from Remote Sensing Images with a Novel U-FDS Net
The fast and accurate extraction of plastic greenhouses over large areas is important for environmental and agricultural management. Traditional spectral index methods and object-based methods can suffer from poor transferability or high computational ...
Yan Mo, Wanting Zhou, Wei Chen
doaj +1 more source
Energy consumption for different greenhouses' structures [PDF]
In this paper influence of greenhouses' structure was estimated for four different double plastic covered greenhouses in winter lettuce production. Plastic coverings are introduced as mean of making this kind of plant production more efficient.
Đević Milan, Dimitrijević Aleksandra
doaj +1 more source

