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Juergen Burfeindt

Juergen Burfeindt
Burfeindt BC Munich · burfeindt.de

PhD

About

50
Publications
2,466
Reads
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97
Citations
Citations since 2017
0 Research Items
51 Citations
20172018201920202021202220230246810
20172018201920202021202220230246810
20172018201920202021202220230246810
20172018201920202021202220230246810
Introduction
From my professional background I am experimental physicist, with additional study years on human medicine, in parallel. My research focused on physical properties of whole human blood. After that, I was responsible for more than 20 years in space industry for the development of scientific instruments. For more than 8 years, I am coaching senior scientists, who are looking for a suitable position in industry. (https://www.burfeindt-bc.de/)
Additional affiliations
February 2014 - present
Burfeindt-BC Munich
Position
  • Career Coach for academic Job Seekers
May 1985 - January 2014
Kayser-Threde GmbH
Position
  • Consultant
September 1978 - April 1985
FAF University Munich
Position
  • Research in Appliced Biophysics
Education
January 1979 - May 1985
Ludwig-Maximilians-University of Munich
Field of study
  • PHD Study on Human Biology
May 1975 - April 1981
Ludwig-Maximilians-University of Munich
Field of study
  • Human Medicine
May 1972 - August 1976
Ludwig-Maximilians-University of Munich
Field of study
  • Experimental Physics

Publications

Publications (50)
Conference Paper
Complex plasma research under microgravity conditions is one of the present key research topics in fundamental physics and material science on the International Space Station (ISS). Experiments started with PKE-Nefedov, launched (with PROGRESS M-44) as early as February 2001. PKE-Nefedov was a joint scientific experiment between the Max-Planck-Inst...
Conference Paper
Oral presentation in two parts on Astronautics in the frame of the natural science program
Article
EXPOSE-R flew as the second of the European Space Agency (ESA) EXPOSE multi-user facilities on the International Space Station. During the mission on the external URM-D platform of the Zvezda service module, samples of eight international astrobiology experiments selected by ESA and one Russian guest experiment were exposed to low Earth orbit space...
Article
Full-text available
The ages of lunar rocks can be determined using the 40Ar−39Ar technique that can be used in-situ on the moon if a neutron source, a noble gas mass spectrometer and a gas extraction and purification system are brought to the lunar surface. A possible instrument for such a task is ISAGE, which combines a strong 252Cf neutron source and a compact spec...
Article
For a future Moon landing, a concept for an in-situ NAA involving age determination using the (40)Ar-(39)Ar method is developed. A neutron source (252)Cf is chosen for sample irradiation on the Moon. A special sample-in-source irradiation geometry is designed to provide a homogeneous distribution of neutron flux at the irradiation position. Using r...
Conference Paper
Full-text available
In a running DLR co-funded study extension on radioisotope dating of planetary surface material we are concentrating on the concept development of some mayor critical sub-units, especially the definition and dimensioning of the radioactive source, and on some central sub-units of the mass spectrometer subsystem. Focussing is on the optimization of...
Conference Paper
Full-text available
Many studies have dealt with the extraction of solar wind implanted particles from moon regolith. In contrast to oxygen pyrolisis, which uses lunar material and requires demanding process temperatures, the extraction of chemicals such as nitrogen and hydrogen from lunar regolith is simpler and less risky. Mid term aim is a demonstrator for propella...
Conference Paper
Full-text available
Kayser-Threde GmbH, Germany, was and is involved with the design and development of the Sample Preparation and Distribution System (SPDS) since the start of the ExoMars Phase A in 2003. In the current Phase B2X2 Extension of the ExoMars project, Kayser-Threde is advancing the overall SPDS concept and design, investigating critical technologies and...
Article
Complex plasma research under microgravity conditions is one of the present key research topics in fundamental physics and material science on the International Space Station, ISS. In 2001 the so-called PKE-Nefedov facility performed its first experiments in radiofrequency induced complex plasmas. This bilateral German–Russian research facility ope...
Article
On March 03, 2001, the PKE-Nefedov plasma experiment was successfully put into operation on board ISS. This complex plasma experiment is the predecessor for the semi-autonomous multi-user facility IMPF (International Microgravity Plasma Facility) to be flown in 2006 with an expected operational lifetime of 10 years. IMPF is envisioned to be an inte...
Article
Since early July 2001, an ESA-funded accommodation study on the Dust Particle Facility is conducted by Kayser-Threde, Munich. With the Dust Particle Facility, simulation experiments on the formation and evolution of pre-planetesimal bodies will be conducted. Specifically, runaway-growth processes, collisional interactions, and aerodynamic influence...
Article
Cooperation between western countries and the former Soviet Union and the present Commonwealth of Independent States (CIS) in manned spaceflight to the Mir Space Station began in 1988 and continued to grow over the following years. During this western involvement in flights to Mir, it become apparent that the conduct of the scientific flight progra...
Article
Automatic chemical fixation of plant seedlings within a 6 min period of reduced gravity (10(-4)g) was performed on three ballistic rocket flights provided by the German Sounding Rocket Programme TEXUS (Technologische Experimente unter Schwerelosigkeit = Technological Experiments in Microgravity). The described TEXUS experiment module consists of a...

Questions

Question (1)
Question
The question raised here refers to a better understand of optical properties of whole human blood, when developing a laboratory device for determining clinical blood parameters in whole blood. Blood can be considered as a colloidal liquid, but we found that some of the blood cells do not contribute to the light attenuation, but some macro-molecules do.
Why making measurements with whole blood and not with fractions of it?
Two answers:
1. Application oriented research: we were focusing on quasi-continuous  measurements in extra-corporal circuits. Taking out small whole blood samples enables nearly real-time measurements. So our baseline was a measurement without separating red blood cells from blood plasma.
2. To understand blood optical behavior.
Why not using an analytical device like a coulter-counter with very fast property measurements?
Our application oriented research was intended to find a simple, low cost method to determine mayor human blood parameters, important for diagnosis in an extra-corporal circuit. Coulter-counters are very expensive.
Why asking for the role of fibrinogen split products?
We investigated the optical density of whole blood by determining the amount of light attenuation dependent from major whole blood parameters and the wavelength in vitro. We put long effort on the design of the experimental set-up to understand / compensate the most disturbing change in human whole blood to optical density, as there are sedimentation, concentration of white blood cells, red blood cells aggregation and rouleaux formation, oxygen saturation, hematocrit etc. At the end we found a response of the optical density to the concentration of fibrinogen split products.
At that time, the appearance of fibrinogen split products in donator’s blood was considered as an early sign for some thrombotic processes in the blood circuit. It is considered to restart these experimental investigations, depending on the current knowledge on the role of fibrinogen split product.

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