An Overview of Soil and Sediment Treatment Research in the Netherlands

2001 ◽  
pp. 21-34 ◽  
Author(s):  
W. H. Rulkens
1998 ◽  
Vol 37 (6-7) ◽  
pp. 363-369 ◽  
Author(s):  
J. M. Gadella ◽  
A. Honders

This paper discusses the results (in terms of costs, reuse of sand and reduction of disposal volume) of a modelling study on various disposal and sand separation scenario's. The model is based on the following input data: (i) the quantity of annually dredged sediments divided over four types of sediment; (ii) the physical composition of these four types of sediment; (iii) the costs for wet disposal and sand separation. Based on the input data of the model, the SCG concludes that sand separation is an environmentally and economically attractive alternative for disposal. The costs for sand separation are in the same range as the costs for disposal, even at relatively low disposal costs (10–20 US $ per m3 ex-situ). Therefore large savings on both disposal volume and primary sand seems achievable.


Author(s):  
Maya Henry

Abstract Primary progressive aphasia (PPA) is a relatively new diagnostic entity, for which few behavioral treatments have been investigated. Recent work has helped to clarify the nature of distinct PPA variants, including a nonfluent variant (NFV-PPA), a logopenic variant (LV-PPA), and a semantic variant (SV-PPA). This paper reviews treatment research to date in each subtype of PPA, including restitutive, augmentative, and functional approaches. The evidence suggests that restitutive behavioral treatment can result in improved or stabilized language performance within treated domains. Specifically, sentence production and lexical retrieval have been addressed in NFV-PPA, whereas lexical retrieval has been the primary object of treatment in LV and SV-PPA. Use of augmentative communication techniques, as well as implementation of functional communication approaches, also may result in improved communication skills in individuals with PPA. The ideal treatment approach may be one that combines restitutive, augmentative, and functional approaches to treatment, in order to maximize residual cognitive-linguistic skills in patients. Additional research is warranted to determine which modes of treatment are most beneficial in each type of PPA at various stages of severity.


1996 ◽  
Vol 26 (12) ◽  
pp. 1355-1363 ◽  
Author(s):  
M. M. van der Klauw ◽  
J. H. P. Wilson ◽  
B. H. Ch. Stricker

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