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Zygalski sheets

Known as: Perforated sheet, Perforate sheets, Zygalski sheets. 
The method of Zygalski sheets was a cryptologic technique used by the Polish Cipher Bureau before and during World War II, and during the war also by… 
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Papers overview

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2013
2013
Environmental noise pollution is among the most urban problems which can be caused due to real sources like traffic, train and… 
2012
2012
The novel architecture of wave‐like proton exchange membrane fuel cell (PEMFC) stack developed in our previous work achieved peak… 
2011
2011
The absorption properties of three kinds of oriented collagen sheet were measured in a terahertz band. We verified that the… 
2011
2011
Ozone generation using both perforated-aluminium plate and fine-mesh stainless steel electrodes is studied, with the view to… 
2010
2010
Pollen morphology of the 13 taxa of Scorzonera L. (Asteraceae) from Turkey was investigated by using light (LM) and scanning… 
2004
2004
In this paper we investigate impact and compression after impact properties of plain weave carbon fiber sandwich composites… 
1999
1999
Abstract“Venous” blood enters the crustacean heart through bivalved ostia. Each ostium is a discrete anatomical unit that remains… 
1999
1999
This document presents the Phase I results of the program which focused on the evaluation of passenger rail car interior… 
1985
1956
1956
Note presenting measurements made of the resistance to air flow of a series of perforated metal sheets with open areas ranging…