Πλοήγηση ανά Συγγραφέα "Kittas, C."
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Convective heat transfer in a heated greenhouse tunnel
Tadj, N.; Draoui, B.; Bartzanas, T.; Kittas, C.; Theodoridis, G. (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 ... -
Crop-climate coupling in greenhouses. characterization and analysis
Baille, A.; Kittas, C.; Katsoulas, N. (2005)The present work analyses the degree of coupling between a greenhouse rose crop and the internal climate as a function of crop characteristics (leaf area index, LAI) and greenhouse climate functions (natural and forced ... -
Daily temperature optimisation in greenhouse by reinforcement learning
Tchamitchian, M.; Kittas, C.; Bartzanas, T.; Lykas, C. (2005)The goal of this study is to show the usefulness of reinforcement learning (RL) to solve a common greenhouse climate optimisation problem. The problem is to minimise the daily heating cost while achieving simultaneously ... -
Data based modeling approach for greenhouse air temperature and relative humidity
Ntoula, E.; Katsoulas, N.; Kittas, C.; Youssef, A.; Exadaktylos, V.; Berckmans, D. (2012)Greenhouse air temperature and relative humidity are two important variables that can be influenced and controlled by many parameters. The present research refers to the prediction of these two variables in a greenhouse ... -
Decidualized and pre-decidualized normal endometrial stromal cells produce more O-linked N-acetylglucosamine containing epitope H than non-decidualized normal endometrial stromal cells
Polyzos, P. T.; Arvanitis, L. D.; Charchanti, A.; Galani, V.; Havaki, S.; Kallioras, V. A.; Nakou, M.; Faros, E. G.; Marinos, E.; Sgantzos, M. N.; Kittas, C. (2006)The epitope H contains an O-linked N-acetylglucosamine residue in a specific conformation and/or environment recognized by the monoclonal antibody H (mAbH). mAbH stains two bands with Mr x 10(-3) of 209 and 62 in lysates ... -
Determination of the spectral properties of several greenhouse cover materials and evaluation of specific parameters related to plant response
Kittas, C.; Bailie, A. (1998)The spectral radiometric properties of various greenhouse cover materials (glass and seven plastic films) were measured in the laboratory using a spectroradiometer equipped with an integrating sphere. For the fluorescent ... -
Development and evaluation of a DSS for drainage management in semi-closed hydroponic systems
Katsoulas, N.; Kittas, C.; Bartzanas, T.; Savvas, D. (2014)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, ... -
Development of a bio-physical simulator for Mediterranean greenhouses
Dimokas, G.; Katsoulas, N.; Kittas, C.; Tchamitchian, M. (2011)The aim of this work was the development and validation of a biophysical model (BioSiGreT) by coupling a crop growth model and a greenhouse climate model. The crop growth model is a modification of TOMGRO to simulate ... -
Development of models to assess potential sheep heat-stress during heat waves
Papanastasiou, D. K.; Zhang, G.; Bartzanas, T.; Panagakis, P.; Norton, T.; Kittas, C. (2013)It is well documented that heat-stress burdens sheep welfare and productivity. It is expected that peak heat-stress levels are observed when high temperatures prevail, i.e. during heat waves. However, continuous measurements ... -
Differences in required structural efficiency of standard commercial steel greenhouses among EU countries: A hellenic experience
Dova, E.; Katsoulas, N.; Kittas, C.; Sophianopoulos, D. (2012)Since the climate and seismic conditions vary significantly among European countries (and sometimes even in different areas of the same country) the European Standard for the design and construction of greenhouses for ... -
Dispersion of pesticides from a naturally ventilated greenhouse: A CFD approach
Bartzanas, T.; Katsoulas, N.; Kittas, C.; Sapounas, A. A. (2006)A methodology of application of a numerical technique in order to simulate the dispersion of pesticides from greenhouses is presented. The proposed simulation approach is based on preliminary calculations that concern the ... -
Effect of a red to far red light filtering plastic film on growth of gardenia (Gardenia jasminoides)
Lykas, Ch; Petsani, D.; Kittas, C.; Papafotiou, M. (2006)The aim of this study was to determine the influence of a light filtering plastic film (red to far red ratio modification) on gardenia (Gardenia jasminoides) growth and to investigate the possibility to use this film as a ... -
Effect of grafting on eggplant leaf gas exchanges under mediterranean greenhouse conditions
Khah, E. M.; Katsoulas, N.; Tchamitchian, M.; Kittas, C. (2011)Grafting is an easier and faster approach than plant breeding to take advantage of both existing resistant plants, especially wild cultivars, and high-bred cultivars. The aim of this study was to investigate the changes ... -
Effect of irrigation frequency on rose flower production and quality
Katsoulas, N.; Kittas, C.; Dimokas, G.; Lykas, Ch (2006)A better understanding of the effects of irrigation frequency on flower production and quality of rose plants can help to propose optimal irrigation scheduling. For this purpose, experiments were conducted on a soilless ... -
Effect of Irrigation Scheduling on Gerbera Flower Yield and Quality
Tsirogiannis, I.; Katsoulas, N.; Kittas, C. (2010)Better understanding of the effects of irrigation frequency and dose on flower production of gerbera plants (Gerbera jamesonii) can lead to optimal water management and crop yield. Measurements of greenhouse microclimate ... -
Effect of misting on transpiration and conductances of a greenhouse rose canopy
Katsoulas, N.; Baille, A.; Kittas, C. (2001)The influence of greenhouse humidity control on the transpiration rate (lambdaE(c)). sensible heat flux (H-c) and bulk stomatal conductance (g(c)) of a soilless rose canopy (Rosa hybrida. cv. First Red) was studied in a ... -
Effect of two irrigation frequencies on rose flower production and quality
Kittas, C.; Dimokas, G.; Lykas, Ch; Katsoulas, N. (2005)A better understanding of the effects of irrigation frequency on flower production and quality of rose plants can help to develop optimal irrigation systems. On this purpose experiments were conducted on a soilless rose ... -
Effect of two UV-absorbing greenhouse-covering films on growth and yield of an eggplant soilless crop
Kittas, C.; Tchamitchian, A.; Katsoulas, N.; Karaiskou, P.; Papaioannou, C. (2006)The use of UV absorbing films as greenhouse cover material is spreading out in protected cultivation. Although their effects on pest and disease management have received much attention, few studies focus on their effects ... -
Effect of vent arrangement on windward ventilation of a tunnel greenhouse
Bartzanas, T.; Boulard, T.; Kittas, C. (2004)The effect of ventilation configuration of a tunnel greenhouse with crop on airflow and temperature patterns was numerically investigated using a commercial computational fluid dynamics (CFD) code. The numerical model was ... -
The effect of vent configuration and insect screens on greenhouse microclimate
Bartzanas, T.; Katsoulas, N.; Kittas, C.; Boulard, T.; Mermier, M. (2005)The influence of insect screens and vent configurations on airflow and temperature patterns in an arched plastic covered greenhouse used for cultivating tomatoes was analysed using a commercial computational fluid dynamics ...