The pollination effectiveness of the stingless bee Melipona quadrifasciata and the honey bee Apis mellifera was tested in tomato plots. The experiment was conducted in four greenhouses as well as in an external open plot in Ribeirão Preto, SP, Brazil. The tomato plants were exposed to visits by M. quadrifasciata in one greenhouse and to A. mellifera in another; two greenhouses were maintained w...

Soils at depths of 0 cm to 10 cm, 10 cm to 20 cm, and 20 cm to 40 cm from 37 vegetable greenhouses in Shandong Peninsula, East China, were collected, and 16 phthalic acid esters (PAEs) were detected using gas chromatography-mass spectrometry (GC-MS). All 16 PAEs could be detected in soils from vegetable greenhouses. The total of 16 PAEs (Σ16PAEs) ranged from 1.939 mg/kg to 35.442 mg/kg, with an...

We promote in situ early pest detection in greenhouses based on video analysis. Our target application is the detection of bio-aggressors on plant organs such as leaves. The goal of this work is to define an innovative decision support system, which handles multi camera data and follows a generic approach to adapt to different categories of bioaggressors. This approach is non-destructive and no...

Abstract Biogas energy, being one of the important components ecological agricultural production, on hand, allows you to conduct successful disposal crop and livestock waste, receiving organic fertilizers, other hand makes it possible provide heating electricity greenhouses, farms industrial buildings buildings. At same time, bioenergy technologies require improvement development, taking into a...

in order to investigate the presence of carnation etched ring virus (cerv), samples of carnation (dianthus caryophyllus), sweet william (dianthus barbatus) and weed plants showing symptoms from greenhouses of khorasan razavi and northern khorasan provinces were collected in autumn 2009. polyclonal antiserum was used in order to detection of cerv by double- antibody sandwich-enzyme linked immuno...

This paper identifies goal handling processes that begin to account for the kind of processes involved in invention. We identify new goal properties and mechanisms for processing goals, as well as means of integrating opportunism, deliberation, and social interaction into goal/plan processes. We focus on enterprise goals, which extend traditional design goals and knowledge goals to address sign...

This paper identifies goal handling processes that begin to account for the kind of processes involved in invention. We identify new kinds of goals with special properties and mechanisms for processingsuch goals, as well as means of integrating opportunism, deliberation, and social interaction into goal/plan processes. We focus on invention goals, which address significant enterprises associate...

To determine if changes in oxygenation and heart rate occur after surfactant, changes in these variables were recorded continuously for 15 minutes before, during, and 15 minutes after the administration of the artificial surfactant ALEC to 21 preterm infants ventilated for respiratory distress syndrome. Median (range) birth weight and gestation were 1199 (561-2680) g and 28 (21-43) weeks, respe...

Cultivar of roses (Rosa spp.) has been grown in greenhouses in Qazvin region of Iran for local markets. Agrobacterium tumefaciens strains were isolated and identified from six different samples of roses plants imported from the Netherland to Iran. During August and September of 2012, nearly 2-5% of rose plants in two different greenhouses in the province of Qazvin were observed with crown gall ...