99 research outputs found
Autorialità condivisa. Rosa Foschi in conversazione con Francesca Gallo
No full textIntervista a Rosa Foschi sulla sua produzione di cinema di animazione, risalente alla fine degli anni Sessanta e primi Settanta
Performance and Potentiality of Camelina (Camelina sativa L. Crantz) Genotypes in Response to Sowing Date under Mediterranean Environment
No full textGiven the growing interest for camelina, as a multipurpose oilseed crop, seven cultivars and two sowing times were compared to characterize camelina’s production potential in the rainfed agroecosystems of Central Italy. A split-plot design, with sowing date as main plot (autumn and spring) and cultivar (V1, V2, V3, V4, V5, V6, and CELINE) as subplot, was adopted over two growing seasons (2017–2019). Phenology, yield and yield components, protein and oil content, and fatty acid profile were evaluated. Going from autumn to spring sowing, a significant reduction was observed in the number of days (139 vs. 54 days) and GDD (642 vs. 466 C d) from emergence to beginning of flowering, with more consistent variations among cultivars. V1 and V2 were the earlier ones both in spring and autumn sowing. Autumn sowing increased seed yield (+18.0%), TSW (+4.1%), number of siliques per plant (+47.2%), contents of alfa-linolenic, eicosenoic, erucic and eicosadienoic acids, and polyunsaturated to saturated fatty acid ratio. Regarding genotype, V3 showed the best seed and oil yield in autumn, whereas V1 and CELINE were the best performing in spring. Finally, TSW and number of siliques per plant were the key yield components for camelina. Results identify, in relation to sowing date, the most suitable cultivars for the tested environment, in terms of earliness and quanti-qualitative traits
Spanish Broom (Spartium junceum L.) as New Fiber for Biocomposites: The Effect of Crop Age and Microbial Retting on Fiber Quality
No full textIn field non-invasive sensing of the nitrogen status in hybrid bermudagrass (Cynodon dactylon × C. transvaalensis Burtt Davy) by a fluorescence-based method
No full textThe level of N fertilization and the content of leaf N in Cynodon dactylon × C. transvaalensis Burtt Davy cv. ‘Tifway 419’ bermudagrass were evaluated non-destructively with a fluorescence-based method. It was applied directly into the field by using the Multiplex portable fluorimeter during two consecutive seasons (2010 and 2011). In the 2010 experiment, the nitrogen balance index (NBI1) provided by the sensor was able to discriminate (at P < 0.05) six different N levels applied, up to 250 kg ha−1, with a precision (root mean square error, RMSE) in the rate estimate of 3.29 kg ha−1. In 2011, the index was insensitive to the N treatment between 150 kg ha−1 and 250 kg ha−1 N rates, and its precision was 39.98 kg ha−1. Calibration of the sensor by using the destructive analysis of turf samplings showed a good linear regression between NBI1 and the leaf N content for both 2010 (R2 = 0.81) and 2011 (R2 = 0.93) experiments. This allowed mapping of the leaf N spatial distribution acquired by the sensor in the field with a prediction error of 0.21%. Averaging the overall estimates of leaf N content per N treatment provided an upper limit of 200 kg ha−1 for the required fertilization, corresponding to a critical level of leaf N of about 2.3%. Our results confirm the usefulness of the new fluorescence-based method and sensor for a precise management of fertilization in turfgrass
Vino vecchio in botti nuove: i test di intelligenza, la valutazione scolastica e il benessere della società
No full textL'articolo ricostruisce la storia dei test di intelligenza con il fine di evidenziare alcune analogie presenti fra le prove INVALSI e i test intellettivi. Nonostante tali prove INVALSI siano state costruite solamente negli ultimi anni, nell'articolo si dimostra come tali prove siano sorprendentemente la riproposizione dei classici test intellettivi che, così come le prove INVALSI, nacquero per opera di psicologi chiamati ad operare sul piano politico al fine di utilizzare la valutazione per "migliorare" l'organizzazione scolastica. L'autore mettendo in luce sotto il profilo storiografico tali analogie, mette in guardia gli psicologi contemporanei rispetto agli errori metodologici già commessi proprio alle origini della storia dei test intellettivi quando furono utilizzati nella valutazione dell'apprendimento e per la riorganizzazione della scuola pubblica.The article reconstructs the history of intelligence tests in order to highlight some of the similarities between INVALSI trials and intellectual tests. Although these INVALSI tests have been built only in recent years, the article demonstrates how such evidence is surprisingly the replication of the classic intellectual tests that, like INVALSI tests, were born by psychologists called to work politically in order to Use the evaluation to "improve" the school organization. The author, by stating historical similarities, warns contemporary psychologists of the methodological mistakes already made to the very origins of the history of intellectual testing when used in the assessment of learning and for the reorganization of the public school
EVALUATION OF CAMELINA SATIVA (L.) CRANTZ AS OILSEED CROP IN TWO ENVIRONMENTS OF CENTRAL AND NORTHERN ITALY
No full textCamelina (Camelina sativa (L.) Crantz) has gained considerable attention in Europe and North America as a
potential oilseed feedstock for advanced biofuels (i.e.aviation fuel) and bioproducts. Camelina seeds contain also different compounds, among which glucosinolates (GLs) make the resulting oil cake interesting for the production of value added chemicals . The objectives of the following study were to characterize the production potential of camelina in two environments of central (Pisa, Tuscany) and northern (Bologna, Emilia Romagna) Italy, traditionally devoted to cereal and
sunflower cultivation. Results showed that seed and oil yield were higher in Pisa than in Bologna. This was probably due to differences in the sowing dates. In fact, previous experiments showed that winter sown camelina can be damaged by frost in the initial vegetative growth stages. The harvest index found in Pisa was significantly higher than in
Bologna due to the lower dry matter accumulation in the vegetative tissues in spring sown crops during the 2nd
and 3rd year of field trial. Very high amounts of GLs were found, with significant variation among years and
environments ; the values reached in both environments were among the highest between those found in
the literature.This study highlights the good crop adaptability, seed and oil yield, protein and GL content of camellia under the pedo-climatic conditions of central and northern Italy, evidencing a clear effect of location and climate on
seed yield and its quality. The high amount of glucosinolates makes the resulting oil cake suitable for the
production of value added chemicals
CHARACTERIZATION OF LIGNOCELLULOSIC RESIDUES OF LINSEED FOR APPLICATION IN BIOMATERIALS
No full textThis work compares the chemical and physic-mechanical properties of the fibers obtained from
linseed stems by using chemical and enzymatic retting, in order to exploit their possible application in
biocomposites. The obtained results give new insights on the valuable properties of linseed fiber as a lowcost
reinforcement component in biocomposites, leading to the diversification of linseed plant application
Novel oilseed crops for cropping systems diversification in Central Italy
No full textThe traditional cereal-based systems of the lowland environments of Mediterranean region are subject to progressive degradation and undesirable decrease in their fertility. Diversification through crop rotation could lead to a more sustainable production systems, in accordance also with the greening measures of the new EU CAP (2014–2020). For farmers, it is crucial to find new crops to include in crop rotations. Novel oilseed crops, like linseed (Linum usitatissimum L.), safflower (Carthamus tinctorius L.), garden cress (Lepidium sativum L.), camelina (Camelina sativa (L.) Crantz) and sesame (Sesamum indicum L.) may represent a valuable alternative, due to their adaptability to marginal soils and to their economic value related to the high quality of the oil, increasingly appreciated by consumers and by the industry . The aim of the present study was to investigate the production potential of winter (garden cress, safflower and linseed) and spring (camelina and sesame) novel oilseed crops at farm level in central Italy in integrated production systems. Results showed that in safflower and linseed, seed, oil and straw yields were significantly influenced by the year of cultivation, while yields of garden cress and camelina were quite stable throughout the study . Significant differences in the oil content were found only for camelina with a significant reduction in 2015. Linseed showed an oil content and yield comparable to sunflower. The oil quality of both crops compared well with market standards, with a content of linoleic >72% and linolenic > 57% in safflower and linseed respectively.The oil of garden cress was characterized by a similar level of oleic and linolenic acid. Camelina showed an interesting oil content and yield, in particular in the first two years of experiments, with a high content of linolenic acid and a medium level of erucic acid. Sesame oil showed a fatty acid composition characterised by high oleic (36.4%) and linoleic acid (46.9%) content that makes this oil nutritionally beneficial.This study underlined the possibility to successfully grow and handle novel oilseed crops in the studied pedoclimatic conditions where they can be included in a rotation scenario with wheat. These oilseed crops showed good adaptability, with quite stable yields over the years and interesting oil content and composition for possible industrial applications. Furthermore, they can contribute to preserve soil fertility and its long-term maintenance by reducing erosion and nutrient losses during the rainy season, and /or by organic carbon sequestration through soil incorporation of crop residues
On-farm evaluation of seed yield and oil quality of linseed (Linum usitatissimum L.) in inland areas of Tuscany, Central Italy
No full textTraditional oilseed crops, such as linseed (Linum usitatissimum
L.), may represent valuable alternative crops in cropping systems
dominated by cereals, due to their adaptability to poor soils and to
their high economic value related to the interesting quality of the oil,
which is being increasingly appreciated by consumers and industry.
The aim of this study was to test the adaptability of linseed to the
inland marginal areas of Tuscany, and to explore the levels of crop
yield and oil quality which can be achieved in hilly and lowland environments.
For three years (2011-2014), experimental open fields (1-
5 ha each) were established and monitored in six commercial farms
located in the inland countryside of Pisa province, Tuscany, Central
Italy. The effect of environment (hilly and plain areas) was assessed
in terms of yield and yield components as well as oil content and composition.
Interestingly, seed yield and biomass production were very
stable over years in the two areas of cultivation, irrespectively of
yearly differences in weather conditions. As expected, higher yields
were obtained in plain than in hilly areas. Regarding oil composition,
oil extracted from linseed grown in plain environments was richer in linolenic acid, while, oppositely, both oleic and linoleic acids were
more abundant in oil from hilly areas. Definitively, our results
demonstrated that linseed might be a valuable alternative to cereal
crops for marginal lands of Tuscany and, more in general, of Central
Italy
Artiste italiane e immagini in movimento. Identità, sguardi, sperimentazioni
No full textIl volume si propone come contributo alla storicizzazione e alla lettura critica delle artiste italiane in relazione al cinema sperimentale e alle arti elettroniche, dalla seconda metà degli anni Sessanta a oggi, con particolare attenzione ai temi dello sguardo femminile inteso come antiegemonico e sovversivo, del ruolo delle donne negli apparati produttivi, della specificità dell’autorialità femminile. I saggi – dedicati a Daniela Bertol, Giosetta Fioroni, Ida Gerosa, Laura Grisi, Federica Marangoni, Martina Melilli, Marisa Merz – e le interviste a Pia Epremian De Silvestris e Rosa Foschi si concentrano su casi studio particolarmente significativi per riflettere attorno ai temi dell’autobiografia, dell’autorappresentazione, delle genealogie e, per attrazione o distanza, della dimensione simbolica femminile nonché della politicità, in un’angolatura – quest’ultima che problematizza la militanza
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