نتایج جستجو برای: partial shading condition

تعداد نتایج: 542060  

2013
Renyan Duan Minyi Huang Zhigao Wang

Light is an important resource for plant growth and development, crops need to change their physiological characteristics to different light environments. Fragaria ananassa Duch. cv. Toyonoka. is an important economic plant which is widely planted at home. A greenhouse experiment was conducted from April 2010 with different sun-shading treatment, 85% (CK), 60% (T1), 35% (T2) and 10% (T3). After...

2017
Longmei Wu Wujun Zhang Yanfeng Ding Jianwei Zhang Elidio D. Cambula Fei Weng Zhenghui Liu Chengqiang Ding She Tang Lin Chen Shaohua Wang Ganghua Li

Low solar radiation caused by industrial development and solar dimming has become a limitation in crop production in China. It is widely accepted that low solar radiation influences many aspects of plant development, including slender, weak stems and susceptibility to lodging. However, the underlying mechanisms are not well understood. To clarify how low solar radiation affects stem mechanical ...

Journal: :Energies 2021

During its operation, a photovoltaic system may encounter many practical issues such as receiving uniform or non-uniform irradiance caused mainly by partial shading. Under panel has single maximum power point. Conversely under irradiance, several local points and global To maximize energy production, point tracker algorithm is commonly implemented to achieve the operating of panel. However, per...

2017
Marco Severini Emanuele Principi Marco Fagiani Stefano Squartini Francesco Piazza

Although photovoltaic power plants are suitable local energy sources in Micro Grid environments, when large plants are involved, partial shading and inaccurate modelling of the plant can affect both the design of the Micro Grid as well as the energy management process that allows for lowering the overall Micro Grid demand towards the main grid. To investigate the issue, a Photovoltaic Plant sim...

Journal: :journal of ornamental plants 2000
ali dolatkhahi mansour matloobi alireza motallebiazar navid vahdati

light intensity is considered a limiting factor in greenhouse rose production. the main aim of this experiment was to evaluate the effect of shading treatments (0, 25, 50, and 65% shading) on quality and chlorophyll content of cut rose (rosa hybrida cv. avalanche), under greenhouse conditions. the experiment was planned in randomized completely block design with four replications. all shoots we...

Journal: :Frontiers in Energy Research 2022

Partial shading is a factor that influences the performance of PV module. The study sought to evaluate impact partial on module in Sudano-Sahelian climate conditions Cameroon. behavior was simulated using MATLAB/Simulink for 12 months with data from town Yagoua. power, current, and voltage losses were estimated by varying rate 5.0% 95.0%, an increase 5.0%. results show that, when ranges 55.0%, ...

Journal: :Journal of vision 2008
Harold T Nefs

Both non-Lambertian shading, specularities in particular, and occluding contours have ill-matched binocular disparities. For example, the disparities of specularities depend not only on a surface's position but also on its curvature. Shading and contour disparities do in general not specify a point on the surface. I investigated how shading and contours contribute to perceived shape in stereosc...

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