TY  - JOUR
A1  - Pressler, Axel
A1  - Esefeld, Katrin
A1  - Scherr, Johannes
A1  - Ali, Mohammad
A1  - Hanssen, Henner
A1  - Kotliar, Konstantin
A1  - Lanzl, Ines
A1  - Halle, Martin
A1  - Kaemmerer, Harald
A1  - Schmidt-Trucksäss, Arno
A1  - Hager, Alfred
T1  - Structural alterations of retinal arterioles in adults late after repair of aortic isthmic coarctation
JF  - The American Journal of Cardiology
N2  - Patients after coarctation repair still have an increased risk of cardiovascular or cerebrovascular events. This has been explained by the persisting hypertension and alterations in the peripheral vessels. However, involvement of the central vessels such as the retinal arteries is virtually unknown. A total of 34 patients after coarctation repair (22 men and 12 women; 23 to 58 years old, age range 0 to 32 years at surgical repair) and 34 nonhypertensive controls underwent structural and functional retinal vessel analysis. Using structural analysis, the vessel diameters were measured. Using functional analysis, the endothelium-dependent vessel dilation in response to flicker light stimulation was assessed. In the patients after coarctation repair, the retinal arteriolar diameter was significantly reduced compared to that of the controls (median 182 μm, first to third quartile 171 to 197; vs 197 μm, first to third quartile 193 to 206; p <0.001). These findings were independent of the peripheral blood pressure and age at intervention. No differences were found for venules. The functional analysis findings were not different between the patients and controls (maximum dilation 3.5%, first to third quartile 2.1% to 4.5% vs 3.6%, first to third quartile 2.2% to 4.3%; p = 0.81), indicating preserved autoregulative mechanisms. In conclusion, the retinal artery diameter is reduced in patients after coarctation repair, independent of their current blood pressure level and age at intervention. As a structural marker of chronic vessel damage associated with past, current, or future hypertension, retinal arteriolar narrowing has been linked to stroke incidence. These results indicate an involvement of cerebral microcirculation in aortic coarctation, despite timely repair, and might contribute to explain the increased rate of cerebrovascular events in such patients.
Y1  - 2010
U6  - http://dx.doi.org/10.1016/j.amjcard.2009.10.070
SN  - 0002-9149
VL  - 105
IS  - 5
SP  - 740
EP  - 744
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Kotliar, Konstantin
A1  - Nagel, Edgar
A1  - Vilser, Walthard
A1  - Seidova, Seid-Fatima
A1  - Lanzl, Ines
T1  - Microstructural alterations of retinal arterial blood column along the vessel axis in systemic hypertension
JF  - Investigative Ophthalmology & Visual Science, IOVS
N2  - Purpose: Image analysis by the retinal vessel analyzer (RVA) observes retinal vessels in their dynamic state online noninvasively along a chosen vessel segment. It has been found that high-frequency diameter changes in the retinal artery blood column along the vessel increase significantly in anamnestically healthy volunteers with increasing age and in patients with glaucoma during vascular dilation. This study was undertaken to investigate whether longitudinal sections of the retinal artery blood column are altered in systemic hypertension.

Methods: Retinal arteries of 15 untreated patients with essential arterial hypertension (age, 50.9 ± 11.9 years) and of 15 age-matched anamnestically healthy volunteers were examined by RVA. After baseline assessment, a monochromatic luminance flicker (530–600 nm; 12.5 Hz; 20 s) was applied to evoke retinal vasodilation. Differences in amplitude and frequency of spatial artery blood column diameter change along segments (longitudinal arterial profiles) of 1 mm in length were measured and analyzed using Fourier transformation.

Results: In the control group, average reduced power spectra (ARPS) of longitudinal arterial profiles did not differ when arteries changed from constriction to dilation. In the systemic hypertension group, ARPS during constriction, baseline, and restoration were identical and differed from ARPS during dilation (P < 0.05). Longitudinal arterial profiles in both groups showed significant dissimilitude at baseline and restoration (P < 0.05).

Conclusions: The retinal artery blood column demonstrates microstructural alterations in systemic hypertension and is less irregular along the vessel axis during vessel dilation. These microstructural changes may be an indication of alterations in vessel wall rigidity, vascular endothelial function, and smooth muscle cells in this disease, leading to impaired perfusion and regulation.
Y1  - 2010
U6  - http://dx.doi.org/10.1167/iovs.09-3649
SN  - 0146-0404
VL  - 51
IS  - 4
SP  - 2165
EP  - 2172
PB  - ARVO
CY  - Rockville, Md.
ER  - 
TY  - CHAP
A1  - Arinkin, Vladimir
A1  - Digel, Ilya
T1  - Water bridge phenomenon : [abstract]
N2  - One of interesting but not well known water properties is related to appearance of highly ordered structures in response to strong electrical field. In 1893 Sir William Armstrong placed a cotton thread between two wine glasses filled with chemically pure water. When high DC voltage was applied between the glasses, a connection consisting of water formed, producing a "water bridge"
KW  - Hydrodynamik
KW  - Elektrodynamik
KW  - Wasserbrücke
KW  - water bridge phenomenon
Y1  - 2009
ER  - 
TY  - CHAP
A1  - ElBashir, Rasha
A1  - Digel, Ilya
T1  - Effect of nitric oxide gas on hydrogels : [abstract]
N2  - The results support our theory that the NO gas has an influence in increasing the translational diffusion of hydrogels and it accelerates the melting process of the gels.
KW  - Stickstoffmonoxid
KW  - Hydrogel
KW  - nitric oxide gas
KW  - hydrogel
Y1  - 2009
ER  - 
TY  - CHAP
A1  - O\'Heras, Carlos
A1  - Digel, Ilya
A1  - Temiz Artmann, Aysegül
T1  - Nanostructured carbon-based column for LPS/protein adsorption : [abstract]
N2  - The absence of a general method for endotoxin removal from liquid interfaces gives an opportunity to find new methods and materials to overcome this gap. Activated nanostructured carbon is a promising material that showed good adsorption properties due to its vast pore network and high surface area. The aim of this study is to find the adsorption rates for a carboneous material produced at different temperatures, as well as to reveal possible differences between the performance of the material for each of the adsorbates used during the study (hemoglobin, serum albumin and lipopolysaccharide, LPS).
KW  - Kohlenstofffaser
KW  - Adsorption
KW  - Lipopolysaccharide
KW  - aktivierte nanostrukturierte Kohlenstofffaser
KW  - lipopolysaccharides
KW  - activated nanostructured carbon
Y1  - 2009
ER  - 
TY  - CHAP
A1  - Bassam, Rasha
A1  - Digel, Ilya
A1  - Artmann, Gerhard
T1  - Effect of nitric oxide on protein thermal stability : [abstract]
N2  - As a deduction from these results, we can conclude that proteins mainly in vitro, denaturate totally at a temperature between 57°C -62°C, and they also affected by NO and different ions types. In which mainly, NO cause earlier protein denaturation, which means that, NO has a destabilizing effect on proteins, and also different ions will alter the protein denaturation in which, some ions will cause earlier protein denaturation while others not.
KW  - Stickstoffmonoxid
KW  - Proteine
KW  - Hämoglobin
KW  - nitric oxide gas
KW  - protein
KW  - hemoglobin
Y1  - 2009
ER  - 
TY  - CHAP
A1  - Digel, Ilya
A1  - Dachwald, Bernd
A1  - Artmann, Gerhard
A1  - Linder, Peter
A1  - Funke, O.
T1  - A concept of a probe for particle analysis and life detection in icy environments
N2  - A melting probe equipped with autofluorescence-based detection system combined with a light scattering unit, and, optionally, with a microarray chip would be ideally suited to probe icy environments like Europa’s ice layer as well as the polar ice layers of Earth and Mars for recent and extinct live.
KW  - Sonde
KW  - Eisschicht
KW  - Autofluoreszenzverfahren
KW  - Lichtstreuungsbasierte Instrumente
KW  - autofluorescence-based detection system
KW  - light scattering analysis
Y1  - 2009
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Ohndorf, A.
A1  - Gill, E.
T1  - Optimization of low-thrust Earth-Moon transfers using evolutionary neurocontrol  / Ohndorf, A. ; Dachwald, B. ; Gill, E.
JF  - IEEE Congress on Evolutionary Computation, 2009. CEC '09.
Y1  - 2009
SN  - 978-1-4244-2958-5
SP  - 358
EP  - 364
ER  - 
TY  - JOUR
A1  - Tran, Thanh Ngoc
A1  - Kreißig, R.
A1  - Staat, Manfred
T1  - Probabilistic limit and shakedown analysis of thin plates and shells
JF  - Structural safety. 31 (2009), H. 1
Y1  - 2009
SN  - 0167-4730
SP  - 1
EP  - 18
PB  - -
ER  - 
TY  - JOUR
A1  - Tran, Thanh Ngoc
A1  - Pham, Phu Tinh
A1  - Vu, D. K.
A1  - Staat, Manfred
T1  - Reliability Analysis of Inelastic Shell Structures Under Variable Loads
JF  - Limit States of Materials and Structures : Direct Methods / Hrsg. Dieter Weichert; Hrsg. Alan Ponter
Y1  - 2009
SN  - 978-1-4020-9633-4
SP  - 135
EP  - 156
PB  - Springer Netherland
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Artmann, Gerhard
A1  - Digel, Ilya
A1  - Zerlin, Kay
A1  - Maggakis-Kelemen, Christina
A1  - Linder, Peter
A1  - Porst, Dariusz
A1  - Kayser, Peter
A1  - Stadler, David
A1  - Dikta, Gerhard
A1  - Temiz Artmann, Aysegül
T1  - Hemoglobin senses body temperature
JF  - European Biophysics Journal
Y1  - 2009
SN  - 0175-7571
VL  - 38
IS  - 5
SP  - 589
EP  - 600
ER  - 
TY  - JOUR
A1  - Sadykov, Rustam
A1  - Digel, Ilya
A1  - Temiz Artmann, Aysegül
A1  - Porst, Dariusz
A1  - Linder, Peter
A1  - Kayser, Peter
A1  - Artmann, Gerhard
A1  - Savitskaya, Irina
A1  - Zhubanova, Azhar
T1  - Oral lead exposure induces dysbacteriosis in rats
JF  - Journal of Occupational Health. 51 (2009) (2009), H. 1
Y1  - 2009
SN  - 1348-9585
SP  - 64
EP  - 73
ER  - 
TY  - JOUR
A1  - Demirci, Taylan
A1  - Kurulgan Demirci, Eylem
A1  - Trzewik, Jürgen
A1  - Linder, Peter
A1  - Digel, Ilya
A1  - Artmann, Gerhard
A1  - Sakizli, Meral
A1  - Temiz Artmann, Aysegül
T1  - Gene expression profile analysis of 3T3/NIH fibroblasts after one hour mechanical stress
JF  - IUBMB Life. 61 (2009), H. 3
Y1  - 2009
SN  - 1521-6543
N1  - Abstracts: Turkish Society of Molecular Medicine, Third International Congress of Molecular Medicine, May 5-8, 2009, Istanbul, Turkey
SP  - 311
EP  - 312
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Carnelli, Ian
A1  - Vasile, Massimiliano
T1  - Evolutionary Neurocontrol: A Novel Method for Low-Thrust Gravity-Assist Trajectory Optimization / Carnelli, Ian ; Dachwald, Bernd ; Vasile, Massimiliano
JF  - Journal of guidance control and dynamics. 32 (2009), H. 2
Y1  - 2009
SN  - 0731-5090
SP  - 616
EP  - 625
PB  - AIAA
CY  - Reston, Va.
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Ball, Andrew J.
A1  - Ulamec, Stephan
A1  - Price, Michael E.
T1  - A small mission for in situ exploration of a primitive binary near-Earth asteroid  / Ball, Andrew J. ; Ulamec, Stephan ; Dachwald, Bernd ; Price, Michael E. ; [u.a.]
JF  - Advances in Space Research. 43 (2009), H. 2
Y1  - 2009
SN  - 0273-1177
SP  - 317
EP  - 324
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Amin, Rashid
A1  - Temiz Artmann, Aysegül
A1  - Artmann, Gerhard
A1  - Lazarovici, Philip
A1  - Lelkes, Peter I.
T1  - Permeability of an In Vitro Model of Blood Brain Barrier (BBB)
JF  - 13th International Conference on Biomedical Engineering / Lim, Chwee Teck [Ed.]
Y1  - 2009
SN  - 978-3-540-92841-6
N1  - IFMBE Proceedings ; 23, Track 1 ; ICBME 2008 3–6 December 2008 Singapore
SP  - 81
EP  - 84
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Behr, M.
A1  - Hormes, M.
A1  - Steinseifer, U.
A1  - Arora, D.
A1  - Coronado, O.
A1  - Pasquali, M.
T1  - A Review of Computational Fluid Dynamics Analysis of Blood Pumps
JF  - European Journal of Applied Mathematics. 20 (2009), H. 4
Y1  - 2009
SP  - 363
EP  - 397
PB  - Cambridge Univ. Press
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Finocchiaro, Thomas
A1  - Heinke, Stefanie
A1  - Leßmann, Marc
T1  - Methods of design, simulation, and control for the development of new VAD/TAH concepts = Methoden zur Konstruktion, Simulation und Regelung für die Entwicklung von neuen VAD/TAH-Konzepten / Finocchiaro, Thomas ; Heinke, Stefanie ; Behbahani, Mehdi ; Leßma
JF  - Biomedizinische Technik / Biomedical Engineering. 54 (2009), H. 5
Y1  - 2009
SN  - 0013-5585
N1  - Printausgabe in der Bereichsbibliothek Jülich vorhanden : 63 Z 471
SP  - 269
EP  - 281
ER  - 
TY  - JOUR
A1  - Steinseifer, Ulrich
A1  - Kashefi, Ali
A1  - Hormes, Marcus
A1  - Schoberer, Mark
A1  - Orlikowsky, Thorsten
A1  - Behbahani, Mehdi
A1  - Behr, Marek
A1  - Schmitz-Rode, Thomas
T1  - Miniaturization of ECMO Systems : Engineering Challenges and Methods
JF  - Artificial Organs. 33 (2009), H. 5
Y1  - 2009
SN  - 1525-1594
N1  - Fifth International Conference on Pediatric Mechanical Circulatory Support Systems and Pediatric Cardiopulmonary Perfusion Abstracts <May 28, 2009>
SP  - A55
EP  - A55
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Tran, L.
A1  - Waluga, C.
A1  - Behr, M.
A1  - Oedekoven, B.
A1  - Mottaghy, K.
T1  - Model-based Numerical Analysis of Platelet Adhesion, Thrombus Growth and Aggregation for Assist Devices
JF  - The International Journal of Artificial Organs. 32 (2009), H. 7
Y1  - 2009
SN  - 0391-3988
N1  - Abstracts - Oral Presentations: XXXVI Annual ESAO Congress, 2-5 September 2009, Compiègne - France; European Society of Artificial Organs (ESAO), Compiegne, France, September 2-5, 2009
SP  - 398
EP  - 398
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Waluga, C.
A1  - Stock, S.
A1  - Mai, A.
A1  - Bergmann, B.
A1  - Behr, M.
A1  - Tran, L.
A1  - Vonderstein, K.
A1  - Scheidt, H.
A1  - Oedekoven, B.
A1  - Mottaghy, K.
T1  - Modelling and Numerical Analysis of Platelet Reactions and Surface Thrombus Growth
Y1  - 2009
N1  - Posterpresentation ; European Society of Biomaterials (ESB), Lausanne, Switzerland, September 7-10, 2009
ER  - 
TY  - JOUR
A1  - Stadler, Andreas M.
A1  - Digel, Ilya
A1  - Embs, Jan P.
A1  - Unruh, Tobias
A1  - Tehei, M.
A1  - Zaccai, G.
A1  - Büldt, G.
A1  - Artmann, Gerhard
T1  - From powder to solution : Hydration dependence of human hemoglobin dynamics correlated to body temperature
JF  - Biophysical Journal. 96 (2009), H. 12
Y1  - 2009
SN  - 0006-3495
SP  - 5073
EP  - 5081
PB  - Cell Press
CY  - Cambridge, Mass.
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Schwarz, Sonja
A1  - Kotliar, Konstantin
A1  - Eynatten, Maximilian von
A1  - Trucksaess, Arno
A1  - Burckhardt, Klaus
A1  - Lutz, Jens
A1  - Heemann, Uwe
A1  - Lanzl, Ines
T1  - Non-diabetic chronic kidney disease influences retinal microvasculature
JF  - Kidney and Blood Pressure Research
Y1  - 2009
SN  - 1423-0143
VL  - 32
IS  - 6
SP  - 428
EP  - 433
PB  - -
ER  - 
TY  - JOUR
A1  - Burkhardt, Klaus
A1  - Schwarz, Sonja
A1  - Pan, Chengrui
A1  - Stelter, Felix
A1  - Kotliar, Konstantin
A1  - Eynatten, Maxilian von
A1  - Sollinger, Daniel
A1  - Lanzl, Ines
A1  - Heemann, Uwe
A1  - Baumann, Marcus
T1  - Myeloid-related protein 8/14 complex describes microcirculatory alterations in patients with type 2 diabetes and nephropathy
JF  - Cardiovascular Diabetology
Y1  - 2009
SN  - 1475-2840
VL  - 8
IS  - 10
SP  - 1
EP  - 8
PB  - -
ER  - 
TY  - JOUR
A1  - Kotliar, Konstantin
A1  - Kozlova, Tatiana V.
A1  - Lanzl, Ines M.
T1  - Postoperative aqueous outflow in the human eye after glaucoma filtration surgery: biofluidmechanical considerations
JF  - Biomedizinische Technik = Biomedical Engineering
Y1  - 2009
SN  - 1862-278X
VL  - 54
IS  - 1
SP  - 14
EP  - 22
PB  - -
ER  - 
TY  - JOUR
A1  - Seidova, Seid-Fatima
A1  - Kotliar, Konstantin
A1  - Foerger, Frauke
A1  - Klopfer, Matthias
A1  - Lanzl, Ines
T1  - Functional retinal changes in Gaucher disease
JF  - Documenta Ophthalmologica
Y1  - 2009
SN  - 1573-2622
VL  - 118
IS  - 2
SP  - 151
EP  - 154
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Kurulgan Demirci, Eylem
A1  - Linder, Peter
A1  - Demirci, Taylan
A1  - Trzewik, Jürgen
A1  - Digel, Ilya
A1  - Artmann, Gerhard
A1  - Temiz Artmann, Aysegül
T1  - Contractile tension of endothelial cells: An LPS based in-vitro sepsis model
JF  - IUBMB Life. 61 (2009), H. 3
Y1  - 2009
SN  - 1521-6543
N1  - Abstracts: Turkish Society of Molecular Medicine, Third International Congress of Molecular Medicine, May 5-8, 2009, Istanbul, Turkey
SP  - 307
EP  - 308
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Digel, Ilya
A1  - Dachwald, Bernd
A1  - Artmann, Gerhard
A1  - Linder, Peter
A1  - Funke, O.
T1  - A concept of a probe for particle analysis and life detection in icy environments
Y1  - 2009
N1  - International workshop “Europa lander: science goals and experiments”, Space Research Institute (IKI), Moscow, Russia
9-13 February 2009
SP  - 1
EP  - 24
ER  - 
TY  - JOUR
A1  - Kotliar, Konstantin
A1  - Kharoubi, A.
A1  - Schmidt-Trucksäß, A.
A1  - Halle, M.
A1  - Lanzl, I.
T1  - Does internal longitudinal microstructure of retinal veins change with age in medically healthy persons?
JF  - Acta Ophthalmologica
Y1  - 2009
SN  - 1600-0420 (E-Journal); 1755-3768 (E-Journal); 0001-639X (Print); 1395-3907 (Print); 1755-375X (Print)
VL  - Vol. 87
IS  - Suppl. S244
SP  - 0
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Arampatzis, Adamantios
A1  - Karamanidis, Kiros
A1  - Mademli, Lida
A1  - Albracht, Kirsten
T1  - Plasticity of the human tendon to short and long-term mechanical loading
JF  - Exercise and Sport Sciences Reviews
Y1  - 2009
U6  - http://dx.doi.org/10.1097/JES.0b013e31819c2e1d
SN  - 1538-3008
VL  - 37
IS  - 2
SP  - 66
EP  - 72
ER  - 
TY  - CHAP
A1  - Gehler, M.
A1  - Ober-Blöbaum, S.
A1  - Dachwald, Bernd
T1  - Application of discrete mechanics and optimal control to spacecraft in non-keplerian motion around small solar system bodies
T2  - Procceedings of the 60th International Astronautical Congress
N2  - Prolonged operations close to small solar system bodies require a sophisticated control logic to minimize propellant mass and maximize operational efficiency. A control logic based on Discrete Mechanics and Optimal Control (DMOC) is proposed and applied to both conventionally propelled and solar sail spacecraft operating at an arbitrarily shaped asteroid in the class of Itokawa. As an example, stand-off inertial hovering is considered, recently identified as a challenging part of the Marco Polo mission. The approach is easily extended to stand-off orbits. We show that DMOC is applicable to spacecraft control at small objects, in particular with regard to the fact that the changes in gravity are exploited by the algorithm to optimally control the spacecraft position. Furthermore, we provide some remarks on promising developments.
KW  - Spacecraft
Y1  - 2009
SN  - 978-161567908-9
N1  - 60th International Astronautical Congress 2009, IAC 2009; Daejeon; South Korea; 12 October 2009 through 16 October 2009
SP  - 1360
EP  - 1371
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Dachwald, Bernd
A1  - Wurm, P.
T1  - Design concept and modeling of an advanced solar photon thruster
T2  - Advances in the Astronautical Sciences
N2  - The so-called "compound solar sail", also known as "Solar Photon Thruster" (SPT), holds the potential of providing significant performance advantages over the flat solar sail. Previous SPT design concepts, however, do not consider shadowing effects and multiple reflections of highly concentrated solar radiation that would inevitably destroy the gossamer sail film. In this paper, we propose a novel advanced SPT (ASPT) design concept that does not suffer from these oversimplifications. We present the equations that describe the thrust force acting on such a sail system and compare its performance with respect to the conventional flat solar sail.
KW  - solar sails
Y1  - 2009
SN  - 978-087703554-1
SN  - 00653438
N1  - 19th AAS/AIAA Space Flight Mechanics Meeting; Savannah, GA; United States; 8 February 2009 through 12 February 2009
SP  - 723
EP  - 740
PB  - American Astronautical Society
CY  - San Diego, Calif.
ER  - 
TY  - CHAP
A1  - Dachwald, Bernd
A1  - Wurm, P.
T1  - Mission analysis for an advanced solar photon thruster
T2  - 60th International Astronautical Congress 2009, IAC 2009
N2  - The so-called "compound solar sail", also known as "Solar Photon Thruster" (SPT), is a solar sail design concept, for which the two basic functions of the solar sail, namely light collection and thrust direction, are uncoupled. In this paper, we introduce a novel SPT concept, termed the Advanced Solar Photon Thruster (ASPT). This model does not suffer from the simplified assumptions that have been made for the analysis of compound solar sails in previous studies. We present the equations that describe the force, which acts on the ASPT. After a detailed design analysis, the performance of the ASPT with respect to the conventional flat solar sail (FSS) is investigated for three interplanetary mission scenarios: An Earth-Venus rendezvous, where the solar sail has to spiral towards the Sun, an Earth-Mars rendezvous, where the solar sail has to spiral away from the Sun, and an Earth-NEA rendezvous (to near-Earth asteroid 1996FG3), where a large orbital eccentricity change is required. The investigated solar sails have realistic near-term characteristic accelerations between 0.1 and 0.2mm/s2. Our results show that a SPT is not superior to the flat solar sail unless very idealistic assumptions are made.
KW  - Interplanetary flight
Y1  - 2009
SN  - 978-161567908-9
N1  - 60th International Astronautical Congress 2009, IAC 2009; Daejeon; South Korea; 12 October 2009 through 16 October 2009
VL  - Vol. 8
SP  - 6838
EP  - 6851
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Schartner, Karl-Heinz
A1  - Loeb, H. W.
A1  - Dachwald, Bernd
A1  - Ohndorf, Andreas
T1  - Perspectives of electric propulsion for outer planetary and deep space missions
T2  - European Planetary Science Congress 2009
N2  - Solar-electric propulsion (SEP) is superior with
respect to payload capacity, flight time and
flexible launch window to the conventional
interplanetary transfer method using chemical
propulsion combined with gravity assists. This fact
results from the large exhaust velocities of electric
low–thrust propulsion and is favourable also for
missions to the giant planets, Kuiper-belt objects
and even for a heliopause probe (IHP) as shown in
three studies by the authors funded by DLR. They
dealt with a lander for Europa and a sample return
mission from a mainbelt asteroid [1], with the
TANDEM mission [2]; the third recent one
investigates electric propulsion for the transfer to
the edge of the solar system.
All studies are based on triple-junction solar arrays,
on rf-ion thrusters of the qualified RIT-22 type and
they use the intelligent trajectory optimization
program InTrance [3].
Y1  - 2009
N1  - European Planetary Science Congress 2009, 13-18 September, Potsdam, Germany
SP  - 416
EP  - 416
ER  - 
TY  - CHAP
A1  - Spurmann, Jörn
A1  - Ohndorf, Andreas
A1  - Dachwald, Bernd
A1  - Seboldt, Wolfgang
A1  - Löb, Horst
A1  - Schartner, Karl-Heinz
T1  - Interplanetary trajectory optimization for a sep mission to Saturn
T2  - 60th International Astronautical Congress 2009
N2  - The recently proposed NASA and ESA missions to Saturn and Jupiter pose difficult tasks to mission designers because chemical propulsion scenarios are not capable of transferring heavy spacecraft into the outer solar system without the use of gravity assists. Thus our developed mission scenario based on the joint NASA/ESA Titan Saturn System Mission baselines solar electric propulsion to improve mission flexibility and transfer time. For the calculation of near-globally optimal low-thrust trajectories, we have used a method called Evolutionary Neurocontrol, which is implemented in the low-thrust trajectory optimization software InTrance. The studied solar electric propulsion scenario covers trajectory optimization of the interplanetary transfer including variations of the spacecraft's thrust level, the thrust unit's specific impulse and the solar power generator power level. Additionally developed software extensions enabled trajectory optimization with launcher-provided hyperbolic excess energy, a complex solar power generator model and a variable specific impulse ion engine model. For the investigated mission scenario, Evolutionary Neurocontrol yields good optimization results, which also hold valid for the more elaborate spacecraft models. Compared to Cassini/Huygens, the best found solutions have faster transfer times and a higher mission flexibility in general.
KW  - Spacecraft
KW  - Reusable Rocket Engines
KW  - Hybrid Propellants
Y1  - 2009
SN  - 9781615679089
N1  - 60th International Astronautical Congress 2009 (IAC 2009)
Held 12-16 October 2009, Daejeon, Republic of Korea.
SP  - 5234
EP  - 5248
ER  - 
TY  - CHAP
A1  - Staat, Manfred
A1  - Tran, Thanh Ngoc
A1  - Pham, Phu Tinh
T1  - Limit and shakedown reliability analysis by nonlinear programming
N2  - 7th International Conference on Reliability of Materials and Structures (RELMAS 2008). June 17 - 20, 2008 ; Saint Petersburg, Russia. pp 354-358. Reprint with corrections in red Introduction Analysis of advanced structures working under extreme heavy loading such as nuclear power plants and piping system should take into account the randomness of loading, geometrical and material parameters. The existing reliability are restricted mostly to the elastic working regime, e.g. allowable local stresses. Development of the limit and shakedown reliability-based analysis and design methods, exploiting potential of the shakedown working regime, is highly needed. In this paper the application of a new algorithm of probabilistic limit and shakedown analysis for shell structures is presented, in which the loading and strength of the material as well as the thickness of the shell are considered as random variables. The reliability analysis problems may be efficiently solved by using a system combining the available FE codes, a deterministic limit and shakedown analysis, and the First and Second Order Reliability Methods (FORM/SORM). Non-linear sensitivity analyses are obtained directly from the solution of the deterministic problem without extra computational costs.
KW  - Finite-Elemente-Methode
KW  - Limit analysis
KW  - Shakedown analysis
Y1  - 2008
ER  - 
TY  - CHAP
A1  - Tran, Thanh Ngoc
A1  - Pham, Phu Tinh
A1  - Staat, Manfred
T1  - Reliability analysis of shells based on direct plasticity methods
N2  - Abstracts der CD-Rom Proceedings of the 8th World Congress on Computational Mechanics (WCCM8) and 5th Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008) 30.06. - 04.07.2008 Venedig, Italien. 2 Seiten Zusammenfassung der Autoren mit graph. Darst. und Literaturverzeichnis
N2  - Abstracts of the Proceedings of the 8th World Congress on Computational Mechanics (WCCM8) and 5th Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008) June 30th - July, 4th 2008, Venice, Italy. 2 pages with abstracts of the authors, Ill. and references.
KW  - Finite-Elemente-Methode
KW  - Limit analysis
KW  - Shakedown analysis
KW  - First-order reliability method
KW  - second-order reliability method
KW  - Sensitivity
Y1  - 2008
ER  - 
TY  - CHAP
A1  - Mansurov, Zulkhair
A1  - Zhubanova, Azhar A.
A1  - Digel, Ilya
A1  - Artmann, Gerhard
A1  - Temiz Artmann, Aysegül
A1  - Savitskaja, Irina S.
A1  - Kozhalakova, A. A.
A1  - Kistaubaeva, Aida S.
T1  - The sorption of LPS toxic shock by nanoparticles on base of carbonized vegetable raw materials
N2  - Immobilization of lactobacillus on high temperature carbonizated vegetable raw material (rice husk, grape stones) increases their physiological activity and the quantity of the antibacterial metabolits, that consequently lead to increase of the antagonistic activity of lactobacillus. It is implies that the use of the nanosorbents for the attachment of the probiotical microorganisms are highly perspective for decision the important problems, such as the probiotical preparations delivery to the right address and their attachment to intestines mucosa with the following detoxication of gastro-intestinal tract and the normalization of it’s microecology. Besides that, thus, the received carbonizated nanoparticles have peculiar properties – ability to sorption of LPS toxical shock and, hence, to the detoxication of LPS.
KW  - Kohlenstofffaser
KW  - Lipopolysaccharide
KW  - nanostrukturierte carbonisierte Pflanzenteile
KW  - lipopolysaccharides
KW  - nanostructured carbonized plant parts
Y1  - 2008
ER  - 
TY  - JOUR
A1  - Temiz Artmann, Aysegül
A1  - Kayser, Peter
T1  - Why is Sepsis an Ongoing Clinical Challenge? Lipopolysaccharide Effects on Red Blood Cell Volume / Temiz, Aysegül ;  Kayser, Peter
JF  - Bioengineering in Cell and Tissue Research / Artmann, Gerhard M. ; Chien, Shu (Eds.)
Y1  - 2008
SN  - 978-3-540-75408-4
SP  - 497
EP  - 508
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Artmann, Gerhard
A1  - Hueck, Isgard S.
A1  - Rossiter, Katharine
A1  - Schmid-Schönbein, Geert W.
T1  - Fluid Shear Attenuates Endothelial Pseudopodia Formation into the Capillary Lumen / Hueck, Isgard S. ; Rossiter, Katharine ; Artman, Gerhard M. ; Schmid-Schönbein, Geert W.
JF  - Microcirculation. 15 (2008), H. 6
Y1  - 2008
SN  - 1549-8719
SP  - 531
EP  - 542
ER  - 
TY  - BOOK
A1  - Artmann, Gerhard
T1  - Bioengineering in Cell and Tissue Research / Artmann, Gerhard M. ; Chien, Shu (Eds.)
Y1  - 2008
SN  - 978-3-540-75408-4
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Artmann, Gerhard
A1  - Zerlin, Kay
A1  - Digel, Ilya
T1  - Hemoglobin Senses Body Temperature
JF  - Bioengineering in Cell and Tissue Research / Artmann, Gerhard M. ; Chien, Shu (Eds.)
Y1  - 2008
SN  - 978-3-540-75408-4
SP  - 415
EP  - 447
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Staat, Manfred
A1  - Baroud, G.
A1  - Topcu, M.
A1  - Sponagel, Stefan
T1  - Soft Materials in Technology and Biology – Characteristics, Properties, and Parameter Identification
JF  - Bioengineering in Cell and Tissue Research / Artmann, Gerhard M. ; Chien, Shu (Eds.)
Y1  - 2008
SN  - 978-3-540-75408-4
SP  - 253
EP  - 315
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Vant, Christianne
A1  - Staat, Manfred
A1  - Baroud, Gamal
T1  - Percutaneous Vertebroplasty: A Review of Two Intraoperative Complications
JF  - Bioengineering in Cell and Tissue Research / Artmann, Gerhard M. ; Chien, Shu (Eds.)
Y1  - 2008
SN  - 978-3-540-75408-4
SP  - 527
EP  - 539
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Seboldt, W.
A1  - Loeb, H. W
A1  - Schartner, K.-H.
T1  - Main Belt Asteroid Sample Return Mission Using Solar Electric Propulsion
JF  - Acta Astronautica. 63 (2008), H. 1-4
Y1  - 2008
SN  - 0094-5765
N1  - International Astronautical Federation Congress <58, 2007, Hyderabad> ; International Astronautical Congress <58, 2007, Hyderabad> ; IAC-07-A3.5.07
SP  - 91
EP  - 101
ER  - 
TY  - JOUR
A1  - Tran, Thanh Ngoc
A1  - Kreißig, R.
A1  - Vu, Duc Khoi
A1  - Staat, Manfred
T1  - Upper bound limit and shakedown analysis of shells using the exact Ilyushin yield surface
JF  - Computer & Structures. 86 (2008)
Y1  - 2008
SN  - 0045-7949
SP  - 1683
EP  - 1695
ER  - 
TY  - JOUR
A1  - Staat, Manfred
A1  - Tran, Thanh Ngoc
A1  - Kreißig, R.
T1  - Load bearing capacity of thin shell structures made of elastoplastic material by direct methods
JF  - Technische Mechanik. 28 (2008), H. 3-4
Y1  - 2008
SP  - 299
EP  - 309
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Seboldt, W.
T1  - Solar Sails — Propellantless Propulsion for Near- and Medium-Term Deep-Space Missions  / W. Seboldt ; B. Dachwald
JF  - Advanced Propulsion Systems and Technologies, Today to 2020 / Claudio Bruno (ed.) ... - (Progress in Astronautics and Aeronautics Series ; 223)
Y1  - 2008
SN  - 978-1-56347-929-8
N1  - ISBN 10: 1-56347-929-X  ; American Institute of Aeronautics and Astronautics <New York, NY>
PB  - AIAA
CY  - Reston, Va.
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Seboldt, W.
A1  - Lämmerzahl, W.
T1  - Solar Sail Propulsion: An Enabling Technology for Fundamental Physics Missions
JF  - Lasers, Clocks and Drag Free Control : Exploration of Relativistic Gravity in Space / by Hansjörg Dittus ..., eds. - ( Astrophysics and Space Science Library ; 349)
Y1  - 2008
SN  - 978-3-540-34376-9
SP  - 379
EP  - 398
PB  - Springer
CY  - Berlin [u.a.]
ER  - 
TY  - JOUR
A1  - Kaul, D. K.
A1  - Koshkaryev, A.
A1  - Artmann, Gerhard
A1  - Barshtein, G.
A1  - Yedgar, S.
T1  - Additive effect of red blood cell rigidity and adherence to endothelial cells in inducing vascular resistance
JF  - American Journal of Physiology : Heart and Circulation Physiology . 295 (2008), H. 4
Y1  - 2008
SN  - 1522-1539
VL  - 295
IS  - 4
SP  - H1788
EP  - H1793
ER  -