نتایج جستجو برای: studied greenhouses are grouped in low technology greenhouses

تعداد نتایج: 17446801  

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و زبانهای خارجی 1390

abstract a fundamental study of “historio-graphic metafiction” and “literary genres”, as introduced in “new historical philosophy”, and tracing them in the works of julian barnes having studied the two novels, the porcupine and arthur & george, by julian barnes, the researcher has applied linda hutcheon’s historio-graphic metafictional theories to them. the thesis is divided into five cha...

ابراهیم نژاد, مینا , تاج بخش, محمدرضا, مروتی, محسن ,

Extensive use of chemical pesticides to control pests in developed and developing countries has led to the increase in crop production and decrease in post-harvest losses, which has caused harmful effects on human health. When the amount of pesticides exceeds permissible limits, some measures should be undertaken to reduce their application. In order to control cucumber pests in greenhouse, far...

Journal: :Journal of Agricultural Meteorology 1982

Journal: :Procedia Computer Science 2019

2016
Mostafa LEILI Amin PIRMOGHANI Mohammad Taghi SAMADI Reza SHOKOOHI Ghodratollah ROSHANAEI Ali POORMOHAMMADI

BACKGROUND The objective of this study was to determine the residual concentrations of ethion and imidacloprid in cucumbers grown in greenhouse. The effect of some simple processing procedures on both ethion and imidacloprid residues were also studied. METHODS Ten active greenhouses that produce cucumber were randomly selected. Ethion and imidacloprid as the most widely used pesticides were m...

2005
Olga Plaksina Thomas Rausch

The base of this paper is built on the work in progress focused on the applicability of the KNX technology for protected cultivation industry. The authors present a description of this application area, which is new for the KNX, by providing the details and requirements of the climate control systems used in greenhouses. As an example of specific application domain, a control of humidity level ...

Optimization and management of energy in agriculture is one of the main factors to achieve sustainable development. The aim of this research was to evaluate the impact of improving energy use efficiency on CO2 emission reduction in the cucumber-production greenhouses in the central region of Isfahan province. Data were collected on a sample of 81 farmers using two-step clustering and proportion...

2009
Andrzej Pawlowski José Luis Guzmán Francisco Rodríguez Manuel Berenguel José Sánchez Moreno Sebastián Dormido

Monitoring and control of the greenhouse environment play a decisive role in greenhouse production processes. Assurance of optimal climate conditions has a direct influence on crop growth performance, but it usually increases the required equipment cost. Traditionally, greenhouse installations have required a great effort to connect and distribute all the sensors and data acquisition systems. T...

Journal: :IEEE Trans. Fuzzy Systems 2000
Riccardo Caponetto Luigi Fortuna Giuseppe Nunnari Luigi Occhipinti Maria Gabriella Xibilia

The methodology proposed in the paper applies artificial intelligence (AI) techniques to the modeling and control of some climate variables within a greenhouse. The nonlinear physical phenomena governing the dynamics of temperature and humidity in such systems are, in fact, difficult to model and control using traditional techniques. The paper proposes a framework for the development of soft co...

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