Search results for "TRUS"
showing 10 items of 1249 documents
Comparison of microextraction procedures to determine pesticides in oranges by liquid chromatography-mass spectrometry.
2002
A liquid chromatographic-mass spectrometric method has been developed for the determination of bitertanol, carbendazim, fenthion, flusilazole, hexythiazox, imidacloprid, methidathion, methiocarb, pyriproxyfen and trichlorfon. Two procedures, based on stir bar sorptive extraction (SBSE) and matrix solid-phase dispersion (MSPD), have been evaluated for the extraction of these compounds in oranges. Their respective advantages and disadvantages are also discussed. The recoveries obtained by MSPD ranged from 47 to 96% and the relative standard deviations (RSDs) ranged from 1 to 15%, whereas with the SBSE method the recoveries were between 8 and 84% and the RSDs between 4 and 16%. Although, the l…
Lead, cadmium and chromium content of edible vegetables grown in three different agricultural areas
1990
(1990). Lead, cadmium and chromium content of edible vegetables grown in three different agricultural areas. Food Additives & Contaminants: Vol. 7, No. sup1, pp. S22-S25.
La tutela della concorrenza nella Repubblica Popolare Cinese
2014
La tesi dal titolo “La tutela della concorrenza nella Repubblica Popolare Cinese” si propone di affrontare l’intricato problema dell’armonizzazione dei principi della concorrenza in un sistema economico in via di transizione quale quello cinese. L’attenzione sulla questione è stata stimolata dall’emanazione della legge antimonopoli, entrata in vigore nell’agosto del 2008, che ha conosciuto le sue prime applicazioni concrete nel corso di questi primi cinque anni . Cercando di non lasciarsi sviare dalla tentazione di giudicare la normativa antitrust paese asiatico sul presupposto di una presunta superiorità degli ordinamenti dei paesi occidentali, che in materia posseggono una tradizioni di o…
¿Qué conduce a un citricultor a ser "orgánico"? Evidencia empírica a partir de la citricultura española
2012
Organic farming is increasing its share of total world food output and receiving grow-ing support from policymakers concerned with agricultural sustainability issues. This paper studies the characteristics of citrus farmers in the Spanish region of Valencia that affect their probability of becoming organic farmers. A fair understanding of these characteristics may help policymakers improve the design of agricultural policies aimed at supporting organic citrus practices. As regards the methodology, a probit model is estimated with information from a sample of conventional and organic citrus farmers obtained from a survey designed for a larger research project aimed at analysing Valencian cit…
Pseudococcidae and Monophlebidae
2012
The families Pseudococcidae (mealybugs) and Monophlebidae include small scale insects (Coccoidea: Hemiptera) that suck out plant sap. The bodies of young instars and adult females are covered with a wax secretion, whereas adult males carry a pair of small wings. Feeding by these pests can cause premature leaf, flower, and fruit drop, reduce plant vigour and discolour tissues. In addition, they secrete honeydew upon which sooty-mould fungi grow, reducing photosynthesis and the market value of the product. Six species of Pseudococcidae, namely Planococcus citri (Risso), Pseudococcus cryptus Hempel, Ps. longispinus (Targioni Tozzetti), Ps. calceolariae (Maskell), Ps. viburni (Signoret) and Nip…
LIFE CYCLE ASSESSMENT OF ITALIAN CITRUS BASED PRODUCTS. SENSITIVITY ANALYSIS AND IMPROVMENT SCENARIOS
2010
Though many studies concern the agro-food sector in the EU and Italy, and its environmental impacts, literature is quite lacking in works regarding LCA application on citrus products. This paper represents one of the first studies on the environmental impacts of citrus products in order to suggest feasible strategies and actions to improve their environmental performance. In particular, it is part of a research aimed to estimate environmental burdens associated with the production of the following citrus-based products: essential oil, natural juice and concentrated juice from oranges and lemons. The life cycle assessment of these products, published in a previous paper, had highlighted sign…