Search results for "Ashing"

Experimental investigation of the effects of efficiency promoters in a MSF lab-scale unit

2006

Determination of essential metals in complete diet feed by flow injection and flame atomic absorption spectrometry

2002

A prior study of different sample pre-treatments for the determination of metallic elements in complete diet feeds was performed in order to choose the most suitable for these samples. The studied pre-treatment were: acid extraction (lixiviation), wet digestion (on microwave oven) and dry ashing mineralization (calcination). Lixiviation (acid extraction) with hydrochloric acid was selected due to its accuracy, fast and simple pre-treatment procedure. Due of the different levels of concentration of the metallic elements in the samples, the same manifold was used but with small variations. Copper (with on-line pre-concentration by chelating Chelex-100 resin), calcium (with on-line dilution) a…

Transfer of Fusarium mycotoxins from malt to boiled wort

2019

Malting was simulated using two different batches of barley as raw material: a naturally contaminated batch and laboratory inoculated (with a deoxynivalenol (DON) and zearalenone (ZEA) producing Fusarium graminearum strain) one. Up to three contamination levels were prepared, every process being carried out in triplicate. A significant washout effect on DON was observed by the end of the first water phase (between 22.4 and 34 % reduction) with an even more pronounced reduction (up to 75 % decrease) by the end of the steeping process. ZEA content remained almost unchanged (no significant difference between the initial and the final concentration). Germination was characterized by an increase…

Trasparenza del mercato, tutela del consumatore e green washing

2022

Il saggio propone una riflessione sulla politiche di trasparenza del mercato strumentali all’ obiettivo della sostenibilità ambientale. Nella prospettiva del mercato unico sostenibile un ruolo fondamentale viene attribuito ai c.d green claims, laddove alto è il rischio che la sostenibilità divenga per le aziende una semplice strategia di marketing. Il fenomeno, noto come green washing, si pone in una prospettiva peculiare rispetto alla pubblicità ingannevole, pone domande diverse e reclama risposte diverse. Duplice la linea di intervento seguita dal legislatore euro unitario, da una parte la tutela dalle pratiche commerciali scorrette, dall’altra, quella dell’obbligo di conformità al contra…

European leaders unmasked: Covid-19 communication strategy through Twitter

2020

[EN] The coronavirus disease Covid-19 (SARS-CoV-2) pandemic is exacting a huge toll on individuals, families, communities, and societies across the world. The study of public communication is a key aspect for slowing the spread of the virus and therefore reducing the death rate. This article analyses political leaders' crisis communication during the Covid-19 pandemic of the most affected European countries, Boris Johnson (United Kingdom), Emmanuel Macron (France), Pedro Sanchez (Spain) and Giuseppe Conte (Italy), in addition to Tedros Adhanom as a representative of the World Health Organisation (WHO) and Ursula Von der Leyen President of the European Union (EU). The study focuses on the vi…

<title>Managing compressed multimedia data in a memory hierarchy: fundamental issues and basic solutions</title>

1998

The purpose of the work is to discuss the fundamental issues and solutions in managing compressed and uncompressed multimedia data, especially voluminous continuous mediatypes (video, audio) and text in a memory hierarchy with four levels (main memory, magnetic disk, (optical or magnetic) on-line/near-line low-speed memory, and slow off-line memory, i.e. archive). We view the multimedia data in such a database to be generated, (compressed), and stored into the memory hierarchy (at the lowest non-archiving level), and subsequently retrieved, (decompressed), and presented. If unused, the data either travels down in the memory hierarchy or it is compressed and stored at the same level. We firs…

“From Savage to Sublime (And Partway Back): Indians and Antiquity in Early Nineteenth-Century American Literature”

2016

This article examines the comparisons made between Indians and Antiquity in early nineteenth-century American literature (notably in the works of Washington Irving and James Fenimore Cooper); to do so, it begins by reaching back to references in European and American writings of the eighteenth century. One of the main motivations behind the associations between Native Americans and the Ancient World made in the early decades of the nineteenth century was to “elevate” Indians in order to transform them into worthy symbols of the recently established United States. Such associations also rendered them suitable subjects for treatment by authors inspired to a large extent by the Romantic Moveme…

Chaînage de bases de données anonymisées pour les études épidémiologiques multicentriques nationales et internationales : proposition d'un algorithme…

2009

Background: Compiling individual records coming from different sources is very important for multicenter epidemiological studies; however, European directives and other national legislation concerning nominal data processing must be respected. These legal aspects can be satisfied by implementing mechanisms that allow anonymization of patient data (such as hashing techniques). Moreover, for security reasons, official recommendations suggest using different cryptographic keys in combination with a cryptographic hash function for each study. Unfortunately, this type of anonymization procedure is in contradiction with common requirements in public health and biomedical research because it becom…

Effect of sperm concentration and storage temperature on goat spermatozoa during liquid storage

2020

The use of cooled semen is relatively common in goats. There are a number of advantages of cooled semen doses, including easier handling of artificial insemination (AI) doses, transport, more AI doses per ejaculate, and higher fertility rates in comparison with frozen AI doses. However, cooled semen has a short shelf life. The objective of this study was to examine the effect of temperature and sperm concentration on the in vitro sperm quality during liquid storage for 48 h, including sperm motility and kinetics, response to oxidation, mitochondrial membrane potential (MMP) and DNA fragmentation in goats. Three experiments were performed. In the first, the effects of liquid preservation of …

Large Scale Knowledge Matching with Balanced Efficiency-Effectiveness Using LSH Forest

2017

Evolving Knowledge Ecosystems were proposed to approach the Big Data challenge, following the hypothesis that knowledge evolves in a way similar to biological systems. Therefore, the inner working of the knowledge ecosystem can be spotted from natural evolution. An evolving knowledge ecosystem consists of Knowledge Organisms, which form a representation of the knowledge, and the environment in which they reside. The environment consists of contexts, which are composed of so-called knowledge tokens. These tokens are ontological fragments extracted from information tokens, in turn, which originate from the streams of information flowing into the ecosystem. In this article we investigate the u…