112,539 research outputs found
ALLEGRA Design Airspeeds and Preliminary Loads
No full textThe report contains the design airspeeds and the preliminary loads based on manoeuvre and gust V-n diagrams for the ALLEGRA configuration. For the gust envelopes the Pratt formula of ACJ 25 was used. The ALLEGRA configuration is based on the final LamAiR configuration developed in the DLR project LamAiR. The ALLEGRA configuration has forward swept wings, a T-Tail, and rear fuselage mounted nacelles. The 150 passenger aircraft is originally designed for laminar flow and less fuel consumption. Within this report all necessary design speeds are given and all the relevant data for manoeuvre- and gust load analysis with respect to CS-25 and JAR-25 requirements are computed. For the manoeuvre V-n diagrams the actual requirements, the "Certification Specifications for Large Aeroplanes CS-25" from the European Aviation Safety Agency (EASA) have been used. To avoid time consuming rational analysis, as required by CS-25, gust V-n diagrams have been established by using the Pratt formula of JAR-25. Therewith the gust load factors for the rigid aircraft are estimated
THE MARKET FOR ALTERNATIVE SPECIES OF SHRIMP (PARAPENEUS LONGIROSTRIS) MINIMALLY PROCESSED TO INCREAS THE SHELF LIFE
No full textA reason that has put at the center of attention the crustaceans has been the growing demand for fast food products to which these fishes are particularly suitable. This paper proposes for the first time the use of the species of shrimp Parapeneus longirostris of the Mediterranean sea to realize precooked trays of V range and analyze the evolution of the process of melanosis with respect to commercial products in general coming from the Atlantic Ocean
W-algebras in type A and the Arakawa-Moreau conjecture
No full textW-algebras are an important class of vertex algebras associated with a reductive Lie algebra g, a nilpotent element f ∈ g and a scalar k ∈ C, which are closely related with various area of mathematics such as integrable systems, two-dimensional conformal field theories, modular representation theory, four dimensional gauge theory, and geometric Langlands program. Moreover, there has been a renewed interest in W-algebras since they appear as invariants of Argyres-Douglas theory via the 4D/2D correspondence recently discovered in physics. However, despite of the importance of W-algebras the problem of finding all the generators for every affine W-algebra remains unsolved. The only results known so far are from Kac-Wakimoto for minimal nilpotent elements, and from Arakawa-Molev for rectangular nilpotent elements, with the restriction of g = glN. In this thesis we obtained an explicit list of generators of W-algebras of type A associated with quasi-rectangular nilpotent elements. This is a nice generalization of the aforementioned results, since both are quasi-rectangular. Furthermore, as an application we were able to confirm a conjecture of Anne Moreau and Tomoyuki Arakawa in some cases on the isomorphism of simple quotients of W-algebras. This is a promising result since it confirms also some expectations by physicists that arose in the recent study of the 4D/2D correspondence
La Chapelle des Dames : un splendide exemple du baroque italien
No full textRésumé
Un des sujets les plus brûlants de la géomatique de ce début du XXIe siècle est la recherche des techniques les plus efficaces pour numériser et restituer les édifices modernes et historiques. Les premiers font l’objets de relevés pour constituer une maquette de type BIM, les seconds plus dans le cadre d’études académiques ou de documents de base pour des travaux de restoration. Le principal sujet de débat actuel peut se résumer en une phrase : « quelle technique pour quel relevé ? ». En effet, si d’un côté les relevés laser permettent de constituer des
nuages de points extrêmement riches et détaillés (Costantino, 2013), il est ensuite souvent délicat de gérer correctement une telle somme de données, même à l’aide d’ordinateurs
de dernière génération (Balletti, 2015). Un problème analogue se pose avec le recours — de plus en plus fréquent – à des caméras photogrammétriques embarquées à bord de drones,
suivis de traitements fondés sur des algorithmes de type Structure from Motion (SFM), qui, à partir d’images multiples, reconstituent eux aussi un nuage de points.
Il faut donc bien réfléchir, avant de se lancer, au type de matériel et de logiciel qui serviront à constituer la maquette (Dominici, 2013). Nous détaillerons ici l’exemple
d’un site particulièrement remarquable, pour lequel trois organismes publics et une entreprise privée ont décidé de collaborer à titre gracieux,
au nom de la conservation du patrimoine artistique et culturel, et du rayonnement de la ville de Palerme
Economic assessment of french fries production, comparing different edible coating
No full textDeep-fat frying is widely used to prepare tasty foods, but oil uptake in fried foods has become a health concern. Food coatings may become a good alternative to solve this problem. A coating at the surface of the foods determines mechanical and barrier properties characteristics of the used substrate. This study seeks to determine the economic convenience on the use of some edible films on french fries positioned in the consumption market to reduce oil uptake. Six different edible coating were tested: methylcellulose, chitosan, locust bean gum (LBG), pectin from citrus, Aloe Vera, Plantago psyllium. Therefore, the effects of such innovation will be evaluated from a technical, economic and social point, in relation to the most suitable edible film able to reduce the absorption of commercial peanut oil during frying processing. The innovation aimed to improve the qualitative food human health protection, therefore a contribution to the healthy lifestyle for consumers
Effect of low SO2 postharvest treatment on quality parameters of ‘Italia’ table grape during prolonged cold storage
No full textTable grape is a non-climacteric fruit with a low rate of physiological activity,
very sensitive to water loss and fungal infection (Botrytis cinerea) during postharvest handling and cold storage. Gray mold is the most aggressive postharvest disease, because of its ability to develop at low temperatures, for that reason, it is standard practice to fumigate with sulfur dioxide (SO2) immediately after packing. ‘Italia’ table grape boxes were stored at 2°C for 4 months in a storage room with low concentrations of SO2 (0.20%) to extend their postharvest shelf life. Every 15 days, a sample of ‘Italia’ table grapes boxes was moved to 20°C for 3 days for the shelf life simulation. During storage, table grapes clusters were analyzed in terms of firmness, weight loss, total soluble solids content, titratable acidity, rachis and berry decay. A sample of ‘Italia’ table grapes was stored at 1°C without SO2 treatment for control. ‘Italia’ table grapes clusters stored at 2°C and treated with low SO2 (0.20%) showed good postharvest performances until 3 months of cold storage in terms of firmness, weight loss, total soluble solids content and titratable acidity. Moreover, rachis and berry decays were inhibited by low SO2 treatment
Nutraceutical content in 'Melanzana' and 'Dottato' fig fruit (Ficus carica L.)
No full textConsumption of fig fruits (Ficus carica L.) has positive health effects due to the presence of nutraceutical compounds that may help preventing the cardiovascular disease occurrence and the growth of carcinoma cells. The aim of this study was the postharvest assessment of the most representative fruit chemical (total soluble solids and titratable acidity), physical (color) and nutraceutical components (phenolics, ascorbic acid and carotenoids) of 'Melanzana' and 'Dottato' fig cultivars. Total carotenoids and total polyphenols contents (from fig peel and pulp) were measured by spectrophotometry at different time of storage in bio-oriented bags at 4°C and 85% of RH. Total carotenoids trend observed during the storage showed no significant differences between the investigated cultivars both in the peel and in the pulp. The average total carotenoids was 4.73 and 4.04 Î1⁄4g g-1for peels and 15.07 and 11.08 Î1⁄4g g-1for pulp, respectively for 'Dottato' and 'Melanzana'. Total polyphenols content showed significant differences among cultivars and within the same cultivar depending on the tissue analyzed (peel or pulp). 'Melanzana' polyphenols content was 743.47 and 1276.22 Î1⁄4g g-1, while for 'Dottato' the content was 553.27 and 990.60 Î1⁄4g g-1, respectively for peel and pulp. During refrigerated storage, a slow decrease of fruit polyphenols concentration was observed for both investigated cultivars
author-bios-SRD-19-0063.R1 – Supplemental material for The Network Structure of Police Misconduct
No full textSupplemental material, author-bios-SRD-19-0063.R1 for The Network Structure of Police Misconduct by George Wood, Daria Roithmayr and Andrew V. Papachristos in Socius</p
Geomatic applications tourban park in palermo
No full textOver the last few years topographical techniques have developed an exponential trend towards simplifying and speeding, both survey operations and analysis of data collected reaching at the same time ever higher levels of accuracy. Among the technologies that are increasingly taking the field in this context is part of the Mobile Mapping System (MMS) that, on any mobile platform, combines sensors and measurement systems designed to provide a 3D position of the platform and, at the same time, capable to acquire geographic data without the aid of control points on the ground. The study reported concerns the verification of the reliability metrics and a qualitative MMS in order to evaluate its behavior in a particularly insidious as it can be an urban park; in particular, we report a series of experiments carried out from 2012 to the present in which we tried to test the potential of the system, comparing it with data from systems more “traditional”, and to exploit all the products in an integrated survey carried out in dynamic mode
The effect of two growth bio regulators on the physiological, phenological and qualitative parameters of peach tree production
No full textThe risk that plants have not accumulated sufficient chilling units (CU) and the economic interest in anticipating flowering have led to growing scientific interest in the use of bio plant regulators to stop dormant peach trees in farms that use agronomic particulates in precision farming protocols. The trials were conducted in 2016 and 2017, on peach trees of the cultivar Maycrest, grown in a commercial orchard located in Metaponto, Basilicata (Southern Italy). A complete randomization experimental scheme was adopted; three theses (control, Fast and Regular® and Asy 23) and two different intervention periods have been provided for, the doses used have been 500g/hl for Fast & Regular® and 300g/hl for Asy 23. The treatments were carried out respectively at - 45 and - 35 days before the time coinciding with the first pink bloom stage. For each treatment, 20 flower buds were taken for each thesis, which were then examined under the stereomicroscope to characterize the morphology. Research has highlighted the best efficacy, as a dormancy switch, of the treatments performed 43 days after the actual time of pink button stage reached by the flower buds. (at the first pink bloom stage). From the flowering phenograms obtained, it is also evident that the treatments carried out at 43 days, i.e. at an earlier time, induced the plants to leave the dormancy earlier and enter the anthesis considerably earlier (-10 days) than the control; the flowering was also concentrated in a smaller number of days
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