Добірка наукової літератури з теми "Grenhouse"
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Статті в журналах з теми "Grenhouse":
Pletikosic, Merica. "Reduction of Grenhouse Gas Emissions in the European Union." Indian Journal of Applied Research 3, no. 10 (October 1, 2011): 1–5. http://dx.doi.org/10.15373/2249555x/oct2013/144.
Souza-Echer, M. P., W. D. Gonzalez, E. Echer, D. J. R. Nordemann, and N. R. Rigozo. "Long term relation between solar activity and surface temperature at different geographical regions." Proceedings of the International Astronomical Union 7, S286 (October 2011): 418–22. http://dx.doi.org/10.1017/s1743921312005170.
Abdellatif, S. M., H. N. Abd EL-Mageed, and H. M. H. EL-Ghazali. "TEMPERATURE GRADIENTS IN A SWEET COLOURED PEPPER COMMERCIAL GRENHOUSES EQUIPPED WITH SOLAR HEATING AND EVAPORATIVE COOLING SYSTEMS." Journal of Soil Sciences and Agricultural Engineering 4, no. 1 (January 1, 2013): 39–55. http://dx.doi.org/10.21608/jssae.2013.50538.
Laktionov, I., O. Vovna, М. Berezhnyi та V. Lebediev. "КОМП'ЮТЕРИЗОВАНА СИСТЕМА КОМПЛЕКСНОГО МОНІТОРИНГУ Й КЕРУВАННЯ МІКРОКЛІМАТОМ ПРОМИСЛОВИХ ТЕПЛИЦЬ НА БАЗІ НЕЧІТКОЇ ЛОГІКИ". Transactions of Kremenchuk Mykhailo Ostrohradskyi National University, 28 червня 2019, 120–29. http://dx.doi.org/10.30929/1995-0519.2019.3.120-129.
Дисертації з теми "Grenhouse":
Piscia, Davide. "Analysis of night-time climate in plastic-covered grenhouses." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/123772.
This work studied night-time greenhouse climate. The focus was on unheated plastic greenhouses and analyses were carried out using CFD models, Energy balance (ES) models and experimental data. The aims were twofold: on the one hand, it was intended to analyse and understand night-time greenhouse climate and propose solutions to the high-humidity issue. On the other hand, the aim was to investigate novel simulation approaches based on the coupling of CFD and ES models as well as the use of optimisation algorithms to study greenhouse climate. Chapter 1 is an introductory chapter which includes the general context and overall research objectives. Chapter 2 studies night-time climate in single-layer greenhouses by means of CFD. The model is validated and condensation User Defined Function (UDF) is introduced which accounted for the condensation rate found on the inner face of the greenhouse cover. Chapter 3 studies a commonly used solution to the issue of low night-time temperature. A thermal screen was analysed by means of CFD simulations. A thorough comparison was made between single-layer and screened greenhouses and detailed information was provided in order to build a framework for taking decisions as to whether to use a screen or not. Chapter 4 introduces a novel approach to optimizing greenhouse design; the approach relies on two optimization algorithms linked to an ES model which was coupled to a CFD model. The aim of the study was twofold: on the one hand to introduce a method offering a general approach for optimizing greenhouse design and on the other, to attempt to solve one of the issues highlighted in Chapter 2. It was shown that using a highly reflective covering material would have a theoretically significant impact on greenhouse performance. Chapter 5 introduces a coupled model for studying greenhouse climate. The CFD was used to provide the ventilation rate and convective coefficients for the ES model. This approach was applied to study the effects of different ventilation strategies on humidity under different outside air conditions. Finally Chapter 6 summarizes the conclusions and proposes themes for future research.
Savalle-Gloire, Noé. "Effet du microclimat lié à l'ombrage temporaire sur la physiologie et la croissance, le rendement et la qualité des fruits de la tomate (Solanum lycopersicum L. H. Karst)." Electronic Thesis or Diss., Avignon, 2024. http://www.theses.fr/2024AVIG0624.
Due to climate change, farming practices must be adapted to protect crops from increased heat and water stress. Additionally, limiting greenhouse gas emissions requires the development of renewable energies. However, in some countries, conflicts of use arise when a large part of the land is already dedicated to agriculture. Agrivoltaics is the practice of installing photovoltaic panels on cultivated land to produce renewable electricity while also protecting crops from heatwaves and drought, and thus it addresses both these issues. This practice could be particularly useful for tomato greenhouses, where shading is already used to protect the plants and where a structure capable of supporting the panels is already in place. The use of mobile panels (dynamic agrivoltaics) makes it possible to adjust shading to the needs of the plant. However, this practice causes temporary shading, the effect of which on crops is not yet fully understood, making it difficult to optimise their stirring policy and maximise crop yields and quality. This thesis examines the impact of shading on the vegetative growth, physiology, yield, andquality of tomato plant. It studies the effects of shading applied at different spatial and temporal scales, ranging from the organ to the plant and varying in intensity on an hourly or seasonal basis. The experiments were conducted in an agrivoltaic greenhouse in Alénya (Pyrénées-Orientales, France) in 2021 and 2022. Various shading treatments were investigated, depending on the daily pattern of plant shading (late morning, early morning, late afternoon, and afternoon) compared to a control grown in a similar greenhouse without photovoltaic panels. The experimental data were used to adapt and calibrate a tomato structure-function model (FSPM) developed in the PSH laboratory, which made it possible to analyse the effect of shading at the whole plant level
Ahunamure, Solomon Eghosa. "An assessment of household energy use, emissions and deforestation in the Thulamela Local Municipality." Diss., 2016. http://hdl.handle.net/11602/360.
Department of Geography and Geo-Information Sciences
Fuel wood is regarded as a major source of energy around the world, particularly in developing nations. Most rural communities around the world, consider forests as the repository of stored energy. The high dependence on forests as a source of fuel wood has a major impact on vegetation because trees take a long time to regenerate to maturity, hence high dependence leads to deforestation. Fuel wood is used for household needs, such as cooking and heating and its uses contribute to the emissions of Green House Gases (GHG) such as CO2, CH4, and Black Carbon amongst others. The study assesses household energy use, the amount of carbon dioxide emitted from the combustion of fuel wood, the extent of de-vegetation and strategies to ensure sustainable energy provisions in the case study areas. Primary and secondary methods were used to collect data. The data were analysed using Statistical Package for the Social Sciences (SPSS 21.0), showing the frequency distribution, measures of central tendency and chi-square to determine the extent of fuel wood used in relation to electricity. The primary data were collected through personal observations, field surveys, interviews and questionnaires, while secondary data included the 2011 South Africa Census data and remote sensing images, which with the aid of GIS, were used in mapping the vegetation change.