Microplastic extraction from sediments established? – A critical evaluation from a trace recovery experiment with a custom-made density separator

2021 ◽  
Author(s):  
Maurits Halbach ◽  
Christin Baensch ◽  
Sonka Dirksen ◽  
Barbara Marianne Scholz-Böttcher
Keyword(s):  
Critical Evaluation ◽  
Custom Made ◽  
Recovery Experiment ◽  
Environmental Compartment

By now, microplastics are present in every environmental compartment of which sediments are considered one major sink. As a result, several approaches for their enrichment from sediments have been established...

Electron Microscopy of Metal-Matrix Composites

1970 ◽  
Vol 28 ◽  
pp. 404-405
Author(s):  
A. Lawley ◽  
M. R. Pinnel ◽  
A. Pattnaik
Keyword(s):  
Electron Microscopy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Critical Evaluation ◽  
Elastic Behavior ◽  
Matrix Composites ◽  
Directionally Solidified ◽  
Fracture Characteristics ◽  
Broad Program

As part of a broad program on composite materials, the role of the interface on the micromechanics of deformation of metal-matrix composites is being studied. The approach is to correlate elastic behavior, micro and macroyielding, flow, and fracture behavior with associated structural detail (dislocation substructure, fracture characteristics) and stress-state. This provides an understanding of the mode of deformation from an atomistic viewpoint; a critical evaluation can then be made of existing models of composite behavior based on continuum mechanics. This paper covers the electron microscopy (transmission, fractography, scanning microscopy) of two distinct forms of composite material: conventional fiber-reinforced (aluminum-stainless steel) and directionally solidified eutectic alloys (aluminum-copper). In the former, the interface is in the form of a compound and/or solid solution whereas in directionally solidified alloys, the interface consists of a precise crystallographic boundary between the two constituents of the eutectic.

Critical evaluation of permeation enhancers for oral mucosal drug delivery

2009 ◽  
Vol 00 (00) ◽  
pp. 090810030148087-29
Author(s):  
Harmik Sohi ◽  
Alka Ahuja ◽  
Farhan Jalees Ahmad ◽  
Roop Krishen Khar
Keyword(s):  
Drug Delivery ◽  
Critical Evaluation ◽  
Permeation Enhancers ◽  
Mucosal Drug Delivery

Feasibility of a custom made retrieval modification in minimally invasive transapical aortic valve implantation

2010 ◽  
Vol 58 (S 01) ◽  
Author(s):  
J Blumenstein ◽  
J Kempfert ◽  
S Lehmann ◽  
A van Linden ◽  
D Merk ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Minimally Invasive ◽  
Custom Made ◽  
Aortic Valve Implantation ◽  
Valve Implantation
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