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A field study of lead phytoextraction by various scented Pelargonium cultivars

✍ Scribed by M. Arshad; J. Silvestre; E. Pinelli; J. Kallerhoff; M. Kaemmerer; A. Tarigo; M. Shahid; M. Guiresse; P. Pradere; C. Dumat

Book ID
116360298
Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
134 KB
Volume
71
Category
Article
ISSN
0045-6535

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A STUDY OF VARIOUS BARRIERS IN ENCLOSED
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✍ Z. XIANGYANG; C. KE'AN; S. JINCAI πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 English βš– 143 KB

In the study of the behaviors of barriers in an enclosed "eld, one should take into account such phenomena as sound energy re#ection, absorption, scattering and di!raction. Therefore, the study is much more di$cult than that in free "eld. In this paper, sound barriers are classi"ed into four kinds a