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51.
52.
Ranieri VA. Deutsch A. Kopcsay G.V. Arjavalingam G. 《IEEE transactions on instrumentation and measurement》1990,39(3):504-507
An electrical probe based on specially designed coaxial tips is shown to have 24-GHz bandwidth. It can be used to test high-speed signal propagation on planar or nonplanar chip or package interconnection structures with signal/ground pads as small as 50 μm. The detailed fabrication procedure, characterization, and use of the probe are presented. A variation of the design has 500-Ω input impedance and a bandwidth of 19 GHz 相似文献
53.
The nutraceutical quality of tomato fruit during domestic storage is affected by chitosan coating 下载免费PDF全文
Carlos Henrique Pagno Antonella Castagna Alice Trivellini Anna Mensuali‐Sodi Annamaria Ranieri Ester Alice Ferreira Alessandro de Oliveira Rios Simone Hickmann Flôres 《Journal of Food Processing and Preservation》2018,42(1)
Fruits and vegetables are highly perishable foods which usually undergo a gradual loss of nutraceuticals during storage. Chitosan‐based edible coatings are extensively studied thanks to antimicrobial activity and great potential to extend the shelf life. However, little information is presently available on the nutraceutical quality of chitosan‐coated products. The present study is addressed to evaluate accompanied by a delayed degradation of some phenolic compounds during storage. These results indicate that chitosan coating is effective in maintaining the quality parameters, the coated fruit showed less weight loss (?16%) and more firmer (+40%) than control fruit, chitosan‐coated tomato emitted significantly lower ethylene (?41%) than control, and slowing down the nutraceutical loss occurring in postharvest, mainly of the lycopene, main carotenoid, found in tomato fruits. These results indicate that chitosan coating is effective in slowing down the nutraceutical loss occurring in postharvest, thus representing a promising tool to preserve bio‐protective phytochemicals during fruit conservation.
Practical applications
During storage and domestic conservation, the nutraceutical quality of fruits and vegetables usually decreases and can undergo deterioration due to physiological disorders and mechanical damages. In the last decade, use of edible coatings has attracted interest as a promising technology to prolong the shelf life of particularly perishable foods. These coatings act as protective barriers decreasing transpiration rate and gas transfer across the product surface, thus promoting the maintenance of nutritional quality. 相似文献54.
De Marzo C De Palma M C Favuzzi G Maggi E Nappi F Posa A Ranieri G Selvaggi P Spinelli A Bamberger M Fuchs W Heck C Loos R Marx K Runge E Skodzek C Weber M Wülker F Zetsche V Artemiev Y Galaktionov A Gordeev Y Gorodkov Y Kamyshkov V Plyaskin V Pojidaev V Shevchenko E Shumilov V Tchudakov J Bunn J Fent P Freund J Gebauer M Glas P Polakos K Pretzl T Schouten P Seyboth J Seyerlein G Vesztergombi 《Canadian Metallurgical Quarterly》1987,36(1):8-15
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56.
Giani M Berto D Zangrando V Castelli S Sist P Urbani R 《The Science of the total environment》2005,353(1-3):232-246
The chemical composition of mucilage aggregates found during summer 2000, 2001 and 2002 in the North Adriatic Sea depends on the nature of the organic matter during aggregation, on the environmental conditions of the site of formation and on the transformations during ageing. The mucilages were composed of organic matter, together with a significant inorganic fraction. Elemental analysis revealed 12.5-32.2% of organic carbon, 0-7.3% of inorganic carbon and 1.0-3.7% of nitrogen. The C(org)/N ratios of most aggregates were between 7.5 and 12.6, values close to those found in the suspended matter; higher ratios were found in large-size (>5 m) aggregates which are probably older. The content of carbohydrates and proteins determined in the aggregates, respectively, 15.4+/-8.9% and 7.9+/-4.8%, w/w, showed a prevalence of carbohydrates over proteins. Neutral carbohydrate analysis of purified polysaccharides from mucilage samples showed very similar signatures with high relative abundance of galactose and glucose. Humic, fulvic and humin substances extracted from the mucilages constitute an important fraction of the organic matter in the aggregates. The humin (a fraction insoluble in acidic and basic media) was present in all mucilage samples, indicating the refractory nature of a part of the organic matter in the mucilage. The iron and calcium could play a role during the aggregation process to form a complex with polysaccharides and humic fractions. The C(org)/N ratio 10+/-2 found in the humic acids extracted from the Adriatic aggregates disclosed a marine origin. The low phosphorus content and the high C(org)/P ratio found in the aggregates might depend from high bacteria activity or from the aggregation of organic fractions depleted of phosphorus. The principal inorganic species contained aluminium and silicon, part of which was of biogenic origin and was more significant in the offshore mucilage aggregates than in the coastal ones. The Si(biog)/C(org) ratio showed that diatoms were always present in the aggregates, although it cannot be established whether these are the producers or these develop within the aggregates. 相似文献
57.
Stefano Monari Gianantonio Battistuzzi Marco Borsari Diego Millo Cees Gooijer Gert van der Zwan Antonio Ranieri Marco Sola 《Journal of Applied Electrochemistry》2008,38(7):885-891
Bovine cytochrome c (cyt c) was adsorbed on a polycrystalline gold electrode coated with 4-mercaptopyridine and 11-mercapto-1-undecanoic acid self-assembled
monolayers (SAMs) and the thermodynamics and kinetics of the heterogeneous protein-electrode electron transfer (ET) reaction
were determined by cyclic voltammetry. The E°′ values for the immobilized protein were found to be lower than those for the corresponding diffusing species. The thermodynamic
parameters for protein reduction (
and ) indicate that the stabilization of the ferric state due to protein–SAM interaction is enthalpic in origin. The kinetic data
suggest that a tunneling mechanism is involved in the ET reaction: the distance between the redox center of the protein and
the electrode surface can be efficiently evaluated using the Marcus equation. 相似文献
58.
Masoud Kayhanian Boaz D. Fruchtman John S. Gulliver Comasia Montanaro Ezio Ranieri Stefan Wuertz 《Water research》2012,46(20):6609-6624
This review interprets highway runoff characterization studies performed on different continents. The results are synthesized to discuss the historical trends, first flush effects of pollutants, pollutant form as dissolved vs. particulate, and to identify surrogate water quality parameters. The information presented in this review showed that: (1) variability has been observed in all quality parameters from each continent and among continents; (2) with a few exceptions the variability seems to be within the expected range; (3) inconsistent monitoring data as well as inconsistent quality assurance and quality control measures were reported among studies, which may be partially responsible for variability of water quality results; (4) compared with historic data, the concentration of total Pb decreased exponentially, which can mostly be credited to leaded gasoline phase-out regulation; (5) first flush effects of pollutants based on concentration have been reported consistently (however, mass first flush effects for pollutants have been reported inconsistently compared with concentration first flush effect); (6) most metal pollutants and phosphorus are present in both the particulate and dissolved forms; and (7) strong correlations were observed between TSS, TDS, TOC and iron (Fe) and 13 other constituents and water quality parameters (turbidity, O&G, TPH, DOC, TKN, EC, Cl, Cd, Cr, Cu, Ni, Pb, Zn). 相似文献
59.
60.
Cell wall metabolism of peaches and nectarines treated with UV‐B radiation: a biochemical and molecular approach 下载免费PDF全文