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Αποτελέσματα 51-60 από 130
Greenhouse microclimate and soilless pepper crop production and quality as affected by a fog evaporative cooling system
(2007)
The influence of greenhouse! humidity control on greenhouse microclimate, crop transpiration rate, and yield and. fruit quality of a soilless grown pepper crop was studied in a greenhouse located at the coastal area of ...
Characterization and analysis of the effects of greenhouse climate control equipment on greenhouse microclimate and crop response
(2011)
An overview of the recent scientific and technical advances on issues concerning the greenhouse microclimate, control and management in Mediterranean regions is presented and discussed. Special emphasis is given on the ...
Greenhouse evaporative cooling: Measurement and data analysis
(2000)
Temperature and humidity gradients were investigated during summer in a rose production greenhouse equipped with a ventilated cooling-pad system and a half shaded plastic roof. In a steady regime, the cooling process reached ...
Nuclear localization of cytokeratin 8 and the O-linked N -acetylglucosamine-containing Epitope H in epithelial cells of infiltrating ductal breast carcinomas: A combination of immunogold and EDTA regressive staining methods
(2006)
In a previous study, the authors have shown cytokeratin 8 (CK8) and epitope H ultrastructural localization in breast cancer cell nuclei. Epitope H contains an O-linked N -acetylglucosamine (O-GlcNAc) residue in a specific ...
Calcium, magnesium and potassium concentrations prediction in a recirculated nutrient solution of a greenhouse soilless rose crop
(2006)
The effects of i) biophysical processes such as crop water uptake, and elements absorption and ii) chemical processes such as fertilizers dissolution and pH changes, on Ca2+, Mg2+ and K+ concentration in a recirculated ...
Measurements and modelling of tracer gas distribution in a naturally ventilated greenhouse for pesticide dispersion determination
(2006)
In this study numerical and experimental results concerning the dispersion of a tracer gas (N2O) inside an experimental greenhouse with a tomato crop were presented and analyzed. The proposed simulation concerns a greenhouse ...
Thermal behaviour of a tunnel arc greenhouse during a solar day
(2008)
The present study investigates numerically the effect of transient solar radiation distribution during day-time in arc type tunnel greenhouse with continuous side vents and a tomato crop using a commercial CFD code. A two ...
Convective heat transfer in a heated greenhouse tunnel
(2007)
Convective transfers determine for a large part the micro-climate inside a greenhouse. These processes are very complicated because they combine free and forced convection modes, most often turbulent with very different ...
Use of a decision support system for management of the drainage solution in semi-closed hydroponic systems under different drainage fractions
(2014)
Soilless cultivation, especially in closed-loop hydroponic systems offers a great option for water saving in greenhouses. Capture and recycling of the excess irrigation water that drains out of the root zone is possible ...
Performance test of a Na+ accumulation model as part of a decision support system for closed hydroponic systems management
(2012)
The recycling of greenhouse effluents in soilless cultivation systems is environment-friendly, since the waste of water and the disposal of nutrients to the environment is drastically reduced or even eliminated. However, ...