Search results for "Tropic"

Modified Atmosphere Packaging and low temperature storage extend marketability of cherimoya (Annona cherimola Mill.)

2022

Cherimoya is a subtropical fruit characterized by a delicious, sweet flavor and beneficial health properties, which found suitable growing conditions in the South of Italy. However, the marketing of this product is halted by its high perishability, which limits the shelf-life of the fresh fruit to few days after harvest and does not allow for commercialization beyond local markets. Studies have shown that storage of this fruit in controlled atmosphere, using Modified Atmosphere Packaging technologies, extended the post-harvest life of Cherimoya, but little is still known about the evolution of its sensory, nutraceutical and microbiological characteristics during such storage period. In this…

2008

Abstract. Airborne in-situ observations of carbon dioxide (CO2) were made during 7 intensive measurement campaigns between November 2001 and April 2003 as part of the SPURT project. Vertical profiles and latitudinal gradients in the upper troposphere/lowermost stratosphere were measured along the western shore of Europe from the subtropics to high northern latitudes during different seasons. In the boundary layer, CO2 exhibits a strong seasonal cycle with the maximum mixing ratios in winter and minimum values in summer, reflecting the strength of CO2 exchange with vegetation. Seasonal variations are strongest in high latitudes and propagate to the free troposphere and lowermost stratosphere…

Cave di Cusa in Sicily: a backdrop of solitude in a wild oasis

2011

LA QUALITÀ DEL MANGO PRODOTTO IN SICILIA, ASPETTI COLTURALI DELLA PAPAYA, DEL LICI E DEL NESPOLO DEL GIAPPONE

2016

L’introduzione di specie arboree da frutto di origine tropicale e subtropicale in Sicilia non è nuova ma solo negli ultimi anni si assiste ad una crescita esponenziale delle superfici investite. Infatti, se alberi come il Nespolo del Giappone fanno ormai parte della nostra cultura frutticola da decenni, mango, lici e papaia fino a qualche anno fa erano poco conosciuti sulle nostre tavole. Nel giro di poco tempo questi frutti hanno conquistato un posto stabile tra le preferenze del consumatore con spazi di mercato in continuo aumento. La coltivazione di questi fruttiferi di origine tropicale presuppone precise risposte sulla fattibilità di nuovi impianti e sulle modalità di conduzione agrono…

Non-degenerate 1,2-silyl shift in silyl substituted alkyltrimethylcyclopentadienes

2005

Abstract The five new silanes C5Me3RSiMenCl3 − n (n = 3, R = i-Pr (5); n = 2, R = i-Pr (6); n = 2, R = s-Bu (7); n = 2, R = cyclohexyl (8); and n = 3, R = t-Bu (9)) were synthesized by reaction of 1-alkyl-2,3,4-trimethylcyclopentadienyl lithium salts with appropriate chlorosilane and characterized by NMR, MS, and IR spectra. At elevated temperatures (250–360 K), all the silanes undergo a non-degenerate sigmatropic silyl rearrangement, which generates non-equivalent structures a and b. The presence of minor structure c was observed in compounds 5 and 7 only. The Diels–Alder cycloaddition of 5 with strong dienophiles tetracyanoethylene (TCNE), and dimethylacetylenedicarboxylate (DMAD) provide…

Porous silicon based photoluminescence immunosensor for rapid and highly-sensitive detection of Ochratoxin A.

2017

A rapid and low cost photoluminescence (PL) immunosensor for the determination of low concentrations of Ochratoxin A (OTA) has been developed. This immunosensor was based on porous silicon (PSi) and modified by antibodies against OTA (anti-OTA). PSi layer was fabricated by metal-assisted chemical etching (MACE) procedure. Main structural parameters (pore size, layer thickness, morphology and nanograins size) and composition of PSi were investigated by means of X-Ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy. PL-spectroscopy of PSi was performed at room temperature and showed a wide emission band centered at 680 ± 20nm. Protein A was covalently immobilized …

A Simple Entropic-Driving Separation Procedure of Low-Size Silver Clusters, Through Interaction with DNA

2021

Abstract Synthesis and purification of metal clusters without strong binding agents by wet chemical methods are very attractive for their potential applications in many research areas. However, especially challenging is the separation of uncharged clusters with only a few number of atoms, which renders the usual techniques very difficult to apply. Herein, we report the first efficient separation of Ag2 and Ag3 clusters using the different entropic driving forces when such clusters interact with DNA, into which Ag3 selectively intercalates. After sequential dialysis of the samples and denaturalizing the DNA‐Ag3 complex, pure Ag2 can be found in the dialysate after extensive dialysis. Free Ag…

Isotropic stochastic flow of homeomorphisms on Sd for the critical Sobolev exponent

2006

Abstract In this work, we shall deal with the critical Sobolev isotropic Brownian flows on the sphere S d . Based on previous works by O. Raimond and LeJan and Raimond (see [O. Raimond, Ann. Inst. H. Poincare 35 (1999) 313–354] and [Y. LeJan, O. Raimond, Ann. of Prob. 30 (2002) 826–873], we prove that the associated flows are flows of homeomorphisms.

Where Did the Money Go? Endogenous Money Creation for International Fraudulent Purposes - The Case of the 2015 Moldovan Banking Scandal

2015

On Monday 4 May 2015, the speaker of Parliament of the Republic of Moldova published the Kroll report on his Internet blog after thousands of people rallied on Sunday 3 May in the capital, Chisinau, to protest against endemic corruption in the country, and demand recovery of the missing billions in the Ilan Shor group scandal. The Kroll report aims at investigating the apparent theft of nearly one-fifth of the country's annual GDP. In a spectacular lender-of-last resort move, the Moldovan central bank was forced to issue some 16 billion lei ($870 million) in emergency loans to keep the economy afloat. The Kroll report focuses on three commercial banks that account for a third of the country…

Sample preparation strategies for the determination of psychoactive substances in biological fluids

2020

This review focuses on the existing analytical procedures for the determination of new psychoactive substances (NPS) in biological fluids by chromatographic methods. Direct analysis of samples is scarcely employed and most proposed methodologies include a sample pre-treatment in order to remove matrix interferents and, in some cases, pre-concentrate extracts. Current extraction methods for NPS determination in plasma/serum, urine, and oral fluids have been widely discussed, such as liquid-liquid, solid-phase, and micro extraction approaches, highlighting the advantages and drawbacks of the proposed extraction methodologies. Regarding microextraction approaches, techniques like microextracti…