197,250 research outputs found
Radon time series in different site: further insights
No full textIn the framework of the UR. 2 of the project DPC-INGV S3 “Short term earthquake prediction and preparation“ (Albarello, 2013), a database, containing radon data collected and provided by scientific institutions or volunteers, accompanied, when available, by meteorological data recorded by the radon instruments, or from meteorological stations located near the site of detection of radon, was created. The database has 3,961 sites and more than one million records (Martinelli et al., 2013; Riggio et al., 2013). The collected data are related to radon acquired in the air, soil and water, for different purposes (health, environmental, seismological). Consequently, also the types of instruments are different and can be used in active or passive mode, in the first case recording the amount of radon present in the environment, and in the second one aspiring radon through an incorporated pump. They consist of commercially available monitors, monitor prototypes from scientific institutions or amateurs, or by commercially available dosimeters. Another important information to evaluate the data, reported in the database, is given by the characteristics of the site, that is, if the instrument is located in a well, in a basement, in homes, or on the ground, with a probe that aspires in the soil. The sampling time is between ten minutes and twelve hours for the measures considered continuous, and between fifteen days and one year for the discretized ones
Mountain cheese factory wastewater treatment with the use of an hybrid constructed wetland
No full textThis paper describes the activity period of an experimental hybrid wetland system placed in a cold climate region. The aim is to determine the efficiency of the system in reducing TSS, BOD5, COD and other pollutants. The constructed wetland consists of a fat-removal unit and a basin for the storage and the distribution of the wastewater which precedes three phytoremediation beds: the first two are parallel and they work as submerged vertical flow wetland with gravel medium for an area of 180 m2; the last is a submerged horizontal flow wetland with sand medium and an area of 360 m2. The CW was designed to process a total estimated BOD5 loading rate of about 24 g m−2 d−1, which was less than half of the average actual loading rate. The wastewater treatment did not meet the required Italian law outflow limits, most likely due to BOD5 overloadin
Genetic parameters for somatic cell score according to udder infection status in Valle del Belice dairy sheep and impact of imperfect diagnosis of infection
No full textAbstract Background Somatic cell score (SCS) has been promoted as a selection criterion to improve mastitis resistance. However, SCS from healthy and infected animals may be considered as separate traits. Moreover, imperfect sensitivity and specificity could influence animals' classification and impact on estimated variance components. This study was aimed at: (1) estimating the heritability of bacteria negative SCS, bacteria positive SCS, and infection status, (2) estimating phenotypic and genetic correlations between bacteria negative and bacteria positive SCS, and the genetic correlation between bacteria negative SCS and infection status, and (3) evaluating the impact of imperfect diagnosis of infection on variance component estimates. Methods Data on SCS and udder infection status for 1,120 ewes were collected from four Valle del Belice flocks. The pedigree file included 1,603 animals. The SCS dataset was split according to whether animals were infected or not at the time of sampling. A repeatability test-day animal model was used to estimate genetic parameters for SCS traits and the heritability of infection status. The genetic correlation between bacteria negative SCS and infection status was estimated using an MCMC threshold model, implemented by Gibbs Sampling. Results The heritability was 0.10 for bacteria negative SCS, 0.03 for bacteria positive SCS, and 0.09 for infection status, on the liability scale. The genetic correlation between bacteria negative and bacteria positive SCS was 0.62, suggesting that they may be genetically different traits. The genetic correlation between bacteria negative SCS and infection status was 0.51. We demonstrate that imperfect diagnosis of infection leads to underestimation of differences between bacteria negative and bacteria positive SCS, and we derive formulae to predict impacts on estimated genetic parameters. Conclusions The results suggest that bacteria negative and bacteria positive SCS are genetically different traits. A positive genetic correlation between bacteria negative SCS and liability to infection was found, suggesting that the approach of selecting animals for decreased SCS should help to reduce mastitis prevalence. However, the results show that imperfect diagnosis of infection has an impact on estimated genetic parameters, which may reduce the efficiency of selection strategies aiming at distinguishing between bacteria negative and bacteria positive SCS.</p
CHANGES IN ZINC, COPPER AND METALLOTHIONEIN CONTENTS DURING OOCYTE GROWTH AND EARLY DEVELOPMENT OF THE TELEOST DANIO RERIO (ZEBRAFISH).
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Supplemental_Material – Supplemental material for Improved Supervision and Safety of Discharges Through Formal Discharge Education
No full textSupplemental material, Supplemental_Material for Improved Supervision and Safety of Discharges Through Formal Discharge Education by Lily L. Ackermann, Emily A. Stewart and Jeffrey M. Riggio in American Journal of Medical Quality</p
Fermat-like equations that are not partition regular
No full textBy means of elementary conditions on coefficients, we isolate a large class of Fermat-like Diophantine equations that are not partition regular, the simplest examples being xn + ym = zk with k â n, m
Spirulina (Arthrospira platensis) e Klamath (Aphanizomenon flos-aquae) come ingredienti per prodotti da forno: analisi sulla materia prima, sul prodotto e valutazione di accettabilità sensoriale
No full textIn un contesto segnato da emergenze climatiche e prospettive di significativa crescita demografica, la ricerca di alimenti sostenibili e, al contempo, nutrienti diventa prioritaria. Le microalghe – inclusi i cianobatteri – risultano ingredienti promettenti, perché ricche di nutrienti e composti bioattivi.
Nella sperimentazione, si è scelto di arricchire prodotti da forno, nello specifico grissini, rispettivamente con polveri di Arthrospira platensis (Spirulina), nota per il suo tradizionale uso alimentare in numerose parti del mondo (Habib et al., 2008), e di Aphanizomenon flos-aquae (Klamath), anch’essa apprezzata per l’alto valore nutrizionale. I grissini sperimentali sono stati studiati, per ogni cianobatterio, a due diverse concentrazioni: 5% e 10% (rispetto al peso della farina).
Scopo dello studio è stato verificare, attraverso analisi chimico-fisiche, la composizione sia delle polveri di Spirulina e Klamath che dei prodotti da forno con esse arricchiti alle due concentrazioni, esaminandone poi il grado di accettabilità da parte dei consumatori.
Le polveri di Spirulina e Klamath (confrontate con la farina di controllo) sono state sottoposte a determinazione del colore, contenuto di ceneri, proteine tramite azoto organico (Kjeldahl) e lipidi totali (Soxhlet), nonché sul profilo degli acidi grassi (GC-MS) e aminoacidi (HPLC-UV). Sulle farine arricchite, alle due percentuali, è stata valutata la capacità di assorbimento di acqua e olio, importanti indici per la previsione della reologia dell’impasto.
Infine, sui quattro prodotti sperimentali sono stati condotti, oltre alle analisi centesimali, test dinamometrici, misurazioni del valore di attività dell’acqua (aw) e un test di accettabilità da parte dei consumatori.
Sui campioni sperimentali è stato osservato un incremento significativo, rispetto al controllo, sia di alcuni costituenti, in particolare le proteine, che della friabilità del prodotto (Mirto, 2023); mentre, il gradimento da parte dei consumatori è risultato tendere maggiormente verso i prodotti arricchiti al 5%, e in particolare per quello con Spirulina (Riggio, 2023)
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