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Ultrasonic Acoustic Emissions from the Sapwood of Thuja occidentalis Measured inside a Pressure Bomb 1  

UK PubMed Central (United Kingdom)

An improved method of counting acoustic emission (AE) events from water-stressed stems of cedar (Thuja occidentalis L.) is presented. Amplified AEs are analyzed on a real time basis...Full Text Available

1984-04-01

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Ultrasonic Acoustic Emissions from the Sapwood of Cedar and Hemlock 1  

UK PubMed Central (United Kingdom)

Measurements are reported of ultrasonic acoustic emissions (AEs) measured from sapwood samples of Thuja occidentalis L. and Tsuga canadensis (L.) Carr. during air dehydration....Full Text Available

1984-08-01

3

Color Doppler sonography in the study of chronic ischemic nephropathy  

British Library Electronic Table of Contents (United Kingdom)

SommarioNei Paesi occidentali il rischio di malattie cardiovascolari e notevolmente aumentato negli ultimi decenni. Di pari passo, il miglioramento prognostico delle malattie cardiovascolari, l'invecchiamento e l'aumento della vita media della popolazione generale stanno rivelando un crescente numero di casi di malattia renale cronica d'origine vascolare. E del tutto plausibile pensare che nei prossimi anni il numero di pazienti anziani con malattia vascolare aterosclerotica, che sara inserito nei programmi di dialisi cronica, aumentera rapidamente. Questo fara lievitare in modo drammatico i costi sociali ed economici della dialisi configurando una vera emergenza clinica. In questo scenario epidemiologico, la diagnosi precoce della malattia ischemica cronica del rene e la definizione di nu...

2008-01-01

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Environmental and plant effects of sewage sludge application to forests and pastures  

Energy Technology Data Exchange (ETDEWEB)

Digested sewage sludge was applied to pastures and tree plantations at 19 to 44 Mg/ha (dry weight) as part of a municipal sludge disposal program. The sludge had low concentrations of heavy metals and traces of /sup 137/Cs and /sup 60/Co. Monitoring of soils, soil solutions, and runoff indicated that N, P, heavy metals, and radionuclides were largely retained in the upper 15cm of the soil. Soil solutions had elevated NO/sub 3//sup /minus// concentrations often >100 mg/L, but no significant increases in groundwater NO/sub 3//sup /minus// were found during the first year. Runoff from active sites had elevated concentrations of NO/sub 3//sup /minus// (20--30 mg/L), soluble P (1 mg/L), BOD/sub 5/ (5--30 mg/L), and fecal coliform (up to 14,000 colonies per 100 ml), not unlike runoff from pastures with cattle. Enrichment of organic N (2 times), available (inorganic) N (5 to 10 times), and Bray-P in the upper soils persisted for several years following sludge application. Sludge increased ...

1989-01-01