Alexander Pfriem

Prof. Dr. Alexander Pfriem

Eberswalde University for sustainable development
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Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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17 November 2019 in Fire and Materials
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Journal Article
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Carmen-Mihaela PopescuCarmen-Mihaela Popescu
Carmen-Mihaela Popescu
Alexander PfriemAlexander Pfriem
Alexander Pfriem
SUMMARY: Wood and wood‐based products are widely used for structural building elements, but due to their composition, they are susceptible of combusting if exposed to fire. Fire safety is an important issue of building safety, especially when the building's fire load contents enhance the risks of fire spread. Therefore, the involved materials are very important to address the fire safety requirements. When existing timber structures are involved, the most usual way to improve its reaction to fire is to treat wood with fire retardant materials.The idea of this paper is to give an overall overview, on the existing fire‐retardant and intumescent coating materials, modification, and treatments that can be applied to wood and wood‐based products in order to improve their reaction to fire.

25 October 2013 in Wood Science and Technology
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Journal Article
Closed access
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MZMario Zauer
Mario Zauer
JKJens Kretzschmar
Jens Kretzschmar
LGLivia Großmann
Livia Großmann
Alexander PfriemAlexander Pfriem
Alexander Pfriem
AWAndré Wagenführ
André Wagenführ

6 July 2013 in Wood Science and Technology
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Journal Article
Closed access
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MZMario Zauer
Mario Zauer
Alexander PfriemAlexander Pfriem
Alexander Pfriem
AWAndré Wagenführ
André Wagenführ

11 August 2011 in Holzforschung
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Journal Article
Closed access
Alexander PfriemAlexander Pfriem
Alexander Pfriem
TDTobias Dietrich
Tobias Dietrich
BBBeate Buchelt
Beate Buchelt
The densification of wood leads to better mechanical properties, e.g., an increased hardness and dimensional stability. However, densified or shaped wood in contact with water springs back into its original shape without fixation. Hence, the aim of this study was the development of a combined densification and fixation procedure. Beech wood samples (Fagus sylvatica L.) were impregnated with a solution consisting of furfuryl alcohol and maleic anhydride. The compression of these impregnated samples to approximately 30% followed by a curing process in a heating press resulted in a significant increase of hardness and dimensional stability. The spring-back-effect was clearly reduced by the in situ polymerization of the furfuryl alcohol solution to furan resins.

19 September 2014 in Wood Science and Technology
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Journal Article
Closed access
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MZMario Zauer
Mario Zauer
SHSimone Hempel
Simone Hempel
Alexander PfriemAlexander Pfriem
Alexander Pfriem
VMViktor Mechtcherine
Viktor Mechtcherine
AWAndré Wagenführ
André Wagenführ

1 December 2012 in SLAS Technology
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Journal Article
Open access
WSWaldemar Spomer
Waldemar Spomer
Alexander PfriemAlexander Pfriem
Alexander Pfriem
RARüdiger Alshut
Rüdiger Alshut
SJSteffen Just
Steffen Just
CPChristian Pylatiuk
Christian Pylatiuk
Over the past decade, the zebrafish has become a key model organism in genetic screenings and drug discovery. A number of genes have been identified to affect the development of the shape and functioning of the heart, leading to zebrafish mutants with heart defects. The development of semiautomated microscopy systems has allowed for the investigation of drugs that reverse a disease phenotype on a larger scale. However, there is a lack of automated feature detection, and commercially available computer-aided microscopes are expensive. Screening of the zebrafish heart for drug discovery typically includes the identification of heart parameters, such as the frequency or fractional shortening. Until now, screening processes have been characterized by manual handling of the larvae and manual microscopy. Here, an intelligent robotic microscope is presented, which automatically identifies the orientation of a zebrafish in a micro well. A predefined region of interest, such as the heart, is detected automatically, and a video with higher magnification is recorded. Screening of a 96-well plate takes 35 to 55 min, depending on the length of the videos. Of the zebrafish hearts, 75% are recorded accurately without any user interaction. A description of the system, including the graphical user interface, is given.