TY  - JOUR
A1  - Fuest, Matthias
A1  - Kotliar, Konstantin
A1  - Walter, Peter
A1  - Plange, Niklas
T1  - Monitoring intraocular pressure changes after intravitreal Ranibizumab injection using rebound tonometry
JF  - Ophthalmic and physiological optics
Y1  - 2014
U6  - https://doi.org/10.1111/opo.12134
SN  - 1475-1313 (E-Journal); 0275-5408 (Print)
N1  - Special Issue: The Ageing Visual System
VL  - 34
IS  - 4
SP  - 438
EP  - 444
PB  - Wiley-Blackwell
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Guo, Yuanyuan
A1  - Miyamoto, Ko-ichiro
A1  - Wagner, Torsten
A1  - Schöning, Michael Josef
A1  - Yoshinobu, Tatsuo
T1  - Theoretical study and simulation of light-addressable potentiometric sensors
JF  - Physica status solidi (A) : applications and materials
N2  - The light-addressable potentiometric sensor (LAPS) is a semiconductor-based potentiometric sensor using a light probe with an ability of detecting the concentration of biochemical species in a spatially resolved manner. As an important biomedical sensor, research has been conducted to improve its performance, for instance, to realize high-speed measurement. In this work, the idea of facilitating the device-level simulation, instead of using an equivalent-circuit model, is presented for detailed analysis and optimization of the performance of the LAPS. Both carrier distribution and photocurrent response have been simulated to provide new insight into both amplitude-mode and phase-mode operations of the LAPS. Various device parameters can be examined to effectively design and optimize the LAPS structures and setups for enhanced performance.
Y1  - 2014
U6  - https://doi.org/10.1002/pssa.201330354
SN  - 0031-8965
VL  - 211
IS  - 6
SP  - 1467
EP  - 1472
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
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  - 
TY  - JOUR
A1  - Niehaus, F.
A1  - Gabor, E.
A1  - Wieland, S.
A1  - Siegert, Petra
A1  - Maurer, Karl-Heinz
A1  - Eck, J.
T1  - Enzymes for the laundry industries: tapping the vast metagenomic pool of alkaline proteases
JF  - Microbial biotechnology
Y1  - 2011
SN  - 1432-0614 (E-Journal); 0171-1741 (Print); 0175-7598 (Print); 0340-2118 (Print)
VL  - Vol. 4
IS  - Iss. 6
SP  - 767
EP  - 776
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Schmitz, Philipp
A1  - Weber, Martin
T1  - Buying and selling behavior of individual investors in option-like securities
JF  - Die Betriebswirtschaft : DBW
N2  - We analyze the trading behavior of individual investors in option-like securities, namely bankissued warrants, and thus expand the growing literature of investors behavior to a new kind of securities. A unique data set from a large German discount broker gives us the opportunity to analyze the trading behavior of 1,454 investors, making 89,958 transactions in 6,724 warrants on 397 underlyings. In different logit regression, we make use of the facts that investors can speculate on rising and falling prices of the underlying with call and put warrants and that we also have information about the stock portfolios of the investors. We report several facts about the trading behavior of individual investors in warrants that are consistent with the literature on the behavior of individual investors in the stock market. The warrant investors buy calls and sell puts if the price of the underlying has decreased over the past trading days and they sell calls and buy puts if the price of the underlying has increased. That means, the investors follow negative feedback trading strategies in all four trading categories observed. In addition, we find strong evidence for the disposition effect for call as well as put warrants, which is reversed in December. The trading behavior is also influenced if the underlying reaches some exceptionally prices, e.g. highs, lows or the strike price. We show that hedging, as one natural candidate to buy puts, does not play an important role in the market for bank-issued warrants.
KW  - Bank-issued Warrants
KW  - Disposition Effect
KW  - Negative Feedback Trading
KW  - Trading Behavior
KW  - Individual Investors
Y1  - 2012
U6  - https://doi.org/10.2139/ssrn.2055088
SN  - 0342-7064
VL  - 72
IS  - 5
SP  - 409
EP  - 426
PB  - Schäffer-Poeschel
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Schmitz, Philipp
A1  - Weber, Martin
T1  - Buying and selling behavior of individual investors in option-like securities
Y1  - 2007
SP  - 1
EP  - 36
ER  - 
TY  - JOUR
A1  - Siegert, Petra
A1  - McLeish, Michael J.
A1  - Baumann, Martin
A1  - Iding, Hans
A1  - Kneen, Malea M.
A1  - Kenyon, George L.
A1  - Pohl, Martina
T1  - Exchanging the substrate specificities of pyruvate decarboxylase from Zymomonas mobilis and benzoylformate decarboxylase from Pseudomonas putida
JF  - Protein engineering, design, and selection : peds
Y1  - 2005
SN  - 1460-213X (E-Journal); 1741-0134 (E-Journal); 0269-2139 (Print); 1741-0126 (Print)
VL  - Vol. 18
IS  - Iss. 7
SP  - 345
EP  - 357
ER  - 
TY  - JOUR
A1  - Dünkelmann, Pascal
A1  - Kolter-Jung, Doris
A1  - Nitsche, Adam
A1  - Demir, Ayhan S.
A1  - Siegert, Petra
A1  - Lingen, Bettina
A1  - Baumann, Martin
A1  - Pohl, Martina
A1  - Müller, Michael
T1  - Development of a donor-acceptor concept for enzymatic cross-coupling reactions of adehydes : the first asymmetric cross-benzoin condensation
JF  - Journal of the American Chemical Society
Y1  - 2002
SN  - 1520-5126 (E-Journal); 0002-7863 (Print)
VL  - Vol. 124
SP  - 12084
EP  - 12085
ER  - 
TY  - JOUR
A1  - Dünnwald, Thomas
A1  - Demir, Ayhan S.
A1  - Siegert, Petra
A1  - Pohl, Martina
A1  - Müller, Michael
T1  - ChemInform Abstract: Enantioselective synthesis of (S)-2-Hydroxypropanone derivatives by Benzoylformate Decarboxylase Catalyzed C—C Bond Formation
JF  - Cheminform
Y1  - 2001
SN  - 1522-2667 (E-Journal); 0931-7597 (Print)
VL  - Vol. 32
IS  - Iss. 4
SP  - Publ. online
ER  - 
TY  - JOUR
A1  - Dünnwald, Thomas
A1  - Demir, Ayhan S.
A1  - Siegert, Petra
A1  - Pohl, Martina
A1  - Müller, Michael
T1  - Enantioselective Synthesis of (S)-2-Hydroxypropanone Derivatives by Benzoylformate Decarboxylase Catalyzed C−C Bond Formation
JF  - European journal of organic chemistry
Y1  - 2000
SN  - 0365-5490 (E-Journal); 1099-0690 (E-Journal); 0075-4617 (Print); 0170-2041 (Print); 0947-3440 (Print); 1434-193X (Print); 1434-243X (Print)
VL  - Vol. 2000
IS  - Iss. 11
SP  - 2161
EP  - 2170
ER  - 
TY  - JOUR
A1  - Iding, Hans
A1  - Dünnwald, Thomas
A1  - Greiner, Lasse
A1  - Liese, Andreas
A1  - Müller, Michael
A1  - Siegert, Petra
A1  - Grötzinger, Joachim
A1  - Demir, Ayhan S.
A1  - Pohl, Martina
T1  - Benzoylformate Decarboxylase from Pseudomonas putida as Stable Catalyst for the Synthesis of Chiral 2-Hydroxy Ketones
JF  - Chemistry - a European journal
Y1  - 2000
SN  - 1521-3765 (E-Journal); 0947-6539 (Print)
VL  - Vol. 6
IS  - Iss. 8
SP  - 1483
EP  - 1495
ER  -