1,721,182 research outputs found
L'ANALISI FLUORIMETRICA SINCRONA PER LA VALUTAZIONE DI REFLUI IDRICI IN IMPIANTI BIOLOGICI
No full textINTERNATIONAL TRADE FAIR ON MATEIAL & ENERGY RECOVERY AND SUSTAINABLE DEVELOPMEN
Particles and Bacteria Removal by Means of Electrostatic Filtration
No full textI quaderni di Ecomond
PERSISTENZA DI METALLI PESANTI NEL SUOLO VALUTATA CON DIVERSE STRATEGIE ANALITICHE
Full text linkLa determinazione del livello e della speciazione di metalli pesanti nell'acqua sotterranea di un terreno è di notevole rilevanza per l’accertamento del rischio ambientale connesso. Nel presente lavoro viene preso in esame un sito ad uso industriale contaminato da metalli pesanti al fine di valutarne la mobilità nell'acqua interstiziale tramite tre strategie di indagine diverse. Il contenuto totale dei metalli, la labilità determinata con la tecnica basata sulla diffusione in film sottile (DGT) ed il rilascio determinato con la lisciviazione sequenziale sul suolo, vengono poste a confronto e valutate alla luce dei risultati analitici conseguiti sull'acqua prelevata da piezometri realizzati allo scopo. La tecnica DGT si è rivelata una metodologia ragionevolmente semplice e affidabile. Inoltre, consentendo di campionare la frazione labile del metallo senza alterare la matrice suolo, appare in grado di fornire informazioni sulla mobilità necessarie per l’approfondimento del rischio ambientale
Pneumonia Disease Assessment using a Slaughterhouse Lung-Scoring Method
No full textThe aims of this study were the evaluation of a quantitative method for the assessment of pneumonia lesions applied to heavy-weight slaughtered pigs, the identification of risk factors connected with the increase in the prevalence and severity of the lesions and the evaluation of a possible correlation between the presence of pneumonia lesions and the decrease in the carcass quality. The lungs of 10 041 pigs (109 slaughtered batches) coming from 91 farms located in Northern Italy were examined. Lung lesions were scored using the method developed by Madec and Kobisch (Journ. Rech. Porc. Fr., 14, 1982, 405). Before the scoring, anamnestic information regarding the farm of origin of each batch were collected. For 41 batches (3603 pigs), information about carcass quality were also collected. Pneumonia lesions were found in 59.6% of the lungs (range 3–91%), and the average batch score was 2.11 (range 0.03–7.15). We identified as farm risk factors those related to an increase in the severity of the lung lesions, the presence of
breeders within the herd, the starting of a growing cycle during
the winter season and the lack of vaccination programmes to
Mycoplasma hyopneumoniae. Moreover, we also found a statistically
significant association between the increase in the mean lung score of the batch and the decrease of the carcass quality
ASPETTI D'INTERAZIONE CHIMICA NEL RECUPERO DI SITI INQUINATI
Full text linkThe aim of the present work is the study of Capillary Suction Time (CST) as a non conventional method to investigate clayey soil-leachate chemical interactions. The understanding of the modification that take place in clayey rich soils when washed is important to remove contaminants. The effect of different saline concentration and cationic characteristics on a bentonite clay has been studied. The results obtained using a home made modified version of a commercial CST apparatus outline a good sensibility and repeatability of measures. CST modified apparatus appears as an
useful screening technique in the selection of soil remediation washing fluids. The effect of the presence of anionic or neutral surfactants, as treatment coadjutants, has been elucidated
MONITORING RESPIRATORY DISEASE AT SLAUGHTERHOUSE USING LUNG AND PLEURAL LESIONS SCORE AND SEROLOGY.
No full textMONITORAGGIO DELLA PATOLOGIA RESPIRATORIA ATTRAVERSO LA VALUTAZIONE DELLE LESIONI POLMONARI, PLEURICHE E DELLA SIEROLOGIA
No full text
In Duct Biological Contaminants. Dust Removal and Viability Through electronic filtration
No full textMilano 200
Batteri nelle condotte di ventilazione. Rimozione e attenuazione di vitalità tramite barriera filtrante di tipo elettrostatico
No full text- …
