TY  - JOUR
A1  - Smith, Walker O.
A1  - Baumann, Marcus
A1  - Wilson, David L.
A1  - Aletsee, Ludwig
T1  - Phytoplankton biomass and productivity in the marginal ice zone of the Fram Strait during summer 1984
JF  - Journal of geophysical research
Y1  - 1987
SN  - 2156-2202 (E-Journal); 2169-9291 (E-Journal); 0148-0227 (Print); 2169-9275 (Print)
VL  - Vol. 92
IS  - Iss. C7
SP  - 6777
EP  - 6786
ER  - 
TY  - JOUR
A1  - Jahnke, J.
A1  - Baumann, Marcus
T1  - Differentiation between Phaeocystis pouchetii (Har.) Lagerheim and Phaeocystis globosa Scherffel
JF  - Hydrobiological bulletin
Y1  - 1987
SN  - 0165-1404 (Print); 1573-5125 (E-Journal)
VL  - Vol. 21
IS  - Iss. 2
SP  - 141
EP  - 147
ER  - 
TY  - JOUR
A1  - Aletsee, Ludwig
A1  - Baumann, Marcus
T1  - A laboratory incubator equipped with facilities to automatically simulate natural irradiance
JF  - Boletim do Instituto Oceanográfico / Universidade de São Paulo
Y1  - 1991
SN  - 1982-436X; 0080-6331
VL  - Vol. 39
IS  - No. 2
SP  - 155
EP  - 159
ER  - 
TY  - JOUR
A1  - Tüg, Helmut
A1  - Baumann, Marcus
T1  - Problems of UV-B radiation measurements in biological research : critical remarks on current techniques and suggestions for improvements
JF  - Geophysical research letters
Y1  - 1994
SN  - 1944-8007 (E-Journal); 0094-8276 (Print)
VL  - Vol. 21
IS  - Iss. 8
SP  - 689
EP  - 692
ER  - 
TY  - JOUR
A1  - Medlin, L. K.
A1  - Lange, M.
A1  - Baumann, Marcus
T1  - Genetic differentiation among three colony-forming species of Phaeocystis : further evidence for the phylogeny of the Prymnesiophyta
JF  - Phycologia
Y1  - 1994
SN  - 0031-8884
VL  - Vol. 33
IS  - Iss. 3
SP  - 199
EP  - 212
ER  - 
TY  - JOUR
A1  - Tüg, Helmut
A1  - Baumann, Marcus
T1  - Reply to the comments by R.L. McKenzie and P.V. Johnston on our paper “Problems of UV-B radiation measurements in biological research: Critical Remarks on current techniques and suggestions for improvements”
JF  - Geophysical research letters
Y1  - 1995
SN  - 1944-8007 (E-Journal); 0094-8276 (Print)
VL  - Vol. 22
IS  - Iss. 9
SP  - 1159
EP  - 1160
ER  - 
TY  - JOUR
A1  - Schirra, Julian
A1  - Watmuff, Jonathan
A1  - Bauschat, J.-Michael
T1  - Highly non-planar lifting systems: a relative assessment of existing potential-methodologies to accurately estimate the induced drag
JF  - 32nd  AIAA Applied Aerodynamics Conference 2014 : June, 16-20 2014, Atlanta, Ga.
Y1  - 2014
SN  - 978-1-62410-288-2
U6  - https://doi.org/10.2514/6.2014-2988
SP  - Publ. online
ER  - 
TY  - JOUR
A1  - Riedel, Marc
A1  - Kartchemnik, Julia
A1  - Schöning, Michael Josef
A1  - Lisdat, Fred
T1  - Impedimetric DNA detection – steps forward to sensorial application
JF  - Analytical chemistry
N2  - This study describes a label-free impedimetric sensor based on short ssDNA recognition elements for the detection of hybridization events. We concentrate on the elucidation of the influence of target length and recognition sequence position on the sensorial performance. The impedimetric measurements are performed in the presence of the redox system ferri-/ferrocyanide and show an increase in charge transfer resistance upon hybridization of ssDNA to the sensor surface. Investigations on the impedimetric signal stability demonstrate a clear influence of the buffers used during the sensor preparation and the choice of the passivating mercaptoalcanol compound. A stable sensor system has been developed, enabling a reproducible detection of 25mer target DNA in the low nanomolar range. After hybridization, a sensor regeneration can be reached with deionized water by adjustment of effective convection conditions, ensuring a sensor reusability. By investigations of longer targets with overhangs exposed to the solution, we can demonstrate applicability of the impedimetric detection for longer ssDNA. However, a decreasing charge transfer resistance change (ΔRct) is found by extending the overhang. As a strategy to increase the impedance change for longer target strands, the position of the recognition sequence can be designed in a way that a small overhang is exposed to the electrode surface. This is found to result in an increase in the relative Rct change. These results suggest that DNA and consequently negative charge near the electrode possess a larger impact on the impedimetric signal than DNA further away.
Y1  - 2014
U6  - https://doi.org/10.1021/ac501800q
SN  - 1520-6882 (E-Journal); 0003-2700 (Print); 0096-4484 (Print)
VL  - 86 (2014)
IS  - 15
SP  - 7867
EP  - 7874
PB  - ACS Publications
CY  - Columbus
ER  - 
TY  - JOUR
A1  - Martinez, Ronny
A1  - Jakob, Felix
A1  - Tu, Ran
A1  - Siegert, Petra
A1  - Maurer, Karl-Heinz
A1  - Schwaneberg, Ulrich
T1  - Increasing activity and thermal resistance of Bacillus gibsonii alkaline protease (BgAP) by directed evolution
JF  - Biotechnology and bioengineering
Y1  - 2013
SN  - 1097-0290 (E-Journal); 0006-3592 (Print); 0368-1467 (Print)
VL  - Vol. 110
IS  - Iss. 3
SP  - 711
EP  - 720
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Jakob, Felix
A1  - Martinez, Ronny
A1  - Mandawe, John
A1  - Hellmuth, Hendrik
A1  - Siegert, Petra
A1  - Maurer, Karl-Heinz
A1  - Schwaneberg, Ulrich
T1  - Surface charge engineering of a Bacillus gibsonii subtilisin protease
JF  - Applied microbiology and biotechnology
Y1  - 2013
SN  - 1432-0614 (E-Journal); 0171-1741 (Print); 0175-7598 (Print); 0340-2118 (Print)
VL  - Vol. 97
IS  - Iss. 15
SP  - 6793
EP  - 6802
PB  - Springer
CY  - Berlin
ER  -