1,721,272 research outputs found
Attendibilità di un metodo di stima indiretta della superficie fogliare di chiome di vite
No full textRecensione a Giovanni Gioviano Pontano, De bello Neapolitano, a cura di G. Germano, A. Iacono, F. Senatore, Firenze, SISMEL-Edizioni del Galluzzo, 2020, pp. LVIII-604
No full textRecensione a Giovanni Gioviano Pontano, De bello Neapolitano, a cura di G. Germano, A. Iacono, F. Senatore, Firenze, SISMEL-Edizioni del Galluzzo, 2020, pp. LVIII-604. Si tratta della prima edizione critica della principale opera storiografica dei Giovanni Pontano, apparsa nel 2020 nella collana Il ritorno dei Classici nell'Umanesimo. Edizione Nazionale dei Testi della Storiografia Umanistica, pubblicata a Firenze dalla SISMEL-Edizioni del Galluzzo.Review to Giovanni Gioviano Pontano, De bello Neapolitano, edited by G. Germano, A. Iacono, F. Senatore, Firenze, SISMEL-Edizioni del Galluzzo, 2020, pp. LVIII-604. This is the first critical edition of the main historiographical work by Giovanni Pontano, which appeared in 2020 in the series Il ritorno dei Classici nell'Umanesimo. Edizione Nazionale dei Testi della Storiografia Umanistica, published in Florence by SISMEL-Edizioni del Galluzzo
Photoinhibition of photosynthesis and photorespiration in Vitis vinifera under field conditions: effects of light climate and leaf position
Full text linkField-grown grapevines (Vitis vinifera cv. Cabernet Sauvignon) were examined for photoinhibition under field conditions. Attached leaves at different positions along the shoot were investigated and their net-assimilation, photorespiration and electron transport were measured. The photochemical efficiency of photosystem II was evaluated on detached, dark-adapted leaves by determining differences in chlorophyll fluorescence, using a portable fluorometer. The comparison of unshaded and artificially shaded plants allowed an estimate of direct photoinhibitory effects on their photochemical capacity. Photoinhibition was also quantified for dark-adapted leaves following exposure to moderate and high light. The immature apical leaves had a lower assimilation rate than mature leaves. This was attributable in part to greater photoinhibition in immature leaves due to greater non-photochemical quenching of fluorescence (q1) and commensurate inhibition of the photochemical efficiency of system II of photosynthesis (Fv/Fm). This inhibition coincided with the high levels of solar radiation at noon but became less during the afternoon. Shade-adapted leaves were more sensitive to photoinhibition than sun-adapted leaves but light acclimatisation effects were independent of photochemical quenching, as distinct from non-photochemical quenching. The degree of photoinhibition was inversely related to photochemical quenching under both low and high light. Practical implication of fluorescence measurements are discusse
Sensibilita' di alcuni vitigni al gelo invernale
No full textWinter frost resistance of some grapevine varieties was tested after the very cold 1985 january. Buds frost damages were estimated in relations to bud position on vine-shoots and to the severity of damage on the bud-axes. The most resistant cultivars were Pinot grigio, Barbera and Chardonnay; on the other hand the less resistant ones were Ciliegiolo and Trebbiano romagnolo. During the 1986 season, this results were confirmed by vegetative and productive behaviour of each variety
A Damage Identification procedure based on Hilbert transform: experimental validation
Full text linkThis paper aims at validating the feasibility of an identification procedure, based on the use of the Hilbert
transform, by means of experimental tests for shear-type multi-degree-of-freedom systems. Particularly,
a three-degree-of-freedom frame will be studied either numerically or experimentally by means of
a laboratory scale model built at the laboratory of the Structural, Aerospace and Geotechnical Engineering
Department (DISAG) of University of Palermo. Several damage scenarios have been considered to prove
the effectiveness of the procedure. Moreover, the experimental tests have been conducted by considering
two different input loads: pulse forces, simulated by means of an instrumental hammer, and wide band
noise base inputs, by a shake table.
In the first section the damage identification procedure, proposed in recent works, is presented. The
procedure is based on the minimization of an objective function mathematically based on the properties of
the analytical signal and the Hilbert transform. Second section reports the experimental model geometrical
data and the data acquisition set-up as built in the DISAG laboratory. In Section 3, the results of the
experimental campaigns are presented and discussed having considered three damage scenarios. The
validated procedure has been proved to be able to not only detect damage even at early stage but it also needs
processing of only few samples of the structural respons
Personalized LSTM-based alarm systems for hypoglycemia and hyperglycemia prevention
Full text linkHypoglycemia and hyperglycemia prevention is the main challenge of an efficient Type 1 Diabetes (T1D) control. Alarm systems that alert the patients when their Blood Glucose (BG) levels are going to be critical can be useful instruments in order to react and avoid upcoming hypoglycemia and hyperglycemia events. These alarm systems can be used with both the conventional basal-bolus therapy or in conjunction with the advanced closed-loop control system, the so-called artificial pancreas. Model-based alarms use patient models to predict future BG levels and then activate alarms, so these models have to be reliable and to ensure good performances. In recent studies, neural network techniques for glucose forecasting obtained promising results, for both population and personalized models. These recent works showed that personalized Long Short-Term Memory (LSTM) models for BG predictions obtained good results on the 100 in silico patients of the most recent version of the UVA/Padova simulator. In this work personalized alarm systems for hypoglycemia and hyperglycemia prediction based on personalized LSTM models are proposed. Promising results have been obtained, detecting correctly the 77% of the hypoglycemia and the 89% of the hyperglycemia events
Evaluating the efficacy in improving male sexual function with a new natural compound made of tribulus terrestris biovis and alga ecklonia cava and its synergic anti aging action
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