TY  - JOUR
A1  - Akimbekov, N. Sh.
A1  - Zhubanova, A. A.
A1  - Mansurov, Z. A.
A1  - Digel, Ilya
A1  - Artmann, Gerhard
A1  - Temiz Artmann, Aysegül
T1  - Use of Carbonized Rise Shell for the local treatment of wounds
JF  - Eurasian ChemTech Journal
N2  - On the model of musculocutaneous wound in rats, the effect of applicative sorption by carbonized rise shell (CRS) on the healing of festering wound was studied. It has been shown, that cytological changes end with rapid scar formation. The use of CRS at the period of severe purulent wound contributes to its favorable course, prevents the development of complications of the animals from sepsis.
Y1  - 2010
U6  - http://dx.doi.org/10.18321/ectj35
SN  - 2522-4867
VL  - 12
IS  - 2
SP  - 133
EP  - 138
PB  - Institute of Combustion Problems
CY  - Almaty
ER  - 
TY  - JOUR
A1  - Digel, Ilya
A1  - Akimbekov, N.
A1  - Turalieva, M.
A1  - Mansurov, Z.
A1  - Temiz Artmann, Aysegül
A1  - Eshibaev, A.
A1  - Zhubanova, A.
T1  - Usage of Carbonized Plant Wastes for Purification of Aqueous Solutions
JF  - Journal of Industrial Technology and Engineering
Y1  - 2013
VL  - 2
IS  - 07
SP  - 47
EP  - 54
ER  - 
TY  - JOUR
A1  - Seifarth, Volker
A1  - Schehl, D.
A1  - Linder, Peter
A1  - Gossmann, Matthias
A1  - Digel, Ilya
A1  - Artmann, Gerhard
A1  - Porst, Dariusz
A1  - Preiß, C.
A1  - Kayser, Peter
A1  - Pack, O.
A1  - Temiz Artmann, Aysegül
T1  - Ureplace: development of a bioreactor for in vitro culturing of cell seeded tubular vessels on collagen scaffolds
N2  - The demand of replacements for inoperable organs exceeds the amount of available organ transplants. Therefore, tissue engineering developed as a multidisciplinary field of research for autologous in-vitro organs. Such three dimensional tissue constructs request the application of a bioreactor. The UREPLACE bioreactor is used to grow cells on tubular collagen scaffolds OPTIMAIX Sponge 1 with a maximal length of 7 cm, in order to culture in vitro an adequate ureter replacement. With a rotating unit, (urothelial) cells can be placed homogeneously on the inner scaffold surface. Furthermore, a stimulation is combined with this bioreactor resulting in an orientation of muscle cells. These culturing methods request a precise control of several parameters and actuators. A combination of a LabBox and the suitable software LabVision is used to set and conduct parameters like rotation angles, velocities, pressures and other important cell culture values. The bioreactor was tested waterproof successfully. Furthermore, the temperature controlling was adjusted to 37 °C and the CO2 - concentration regulated to 5 %. Additionally, the pH step responses of several substances showed a perfect functioning of the designed flow chamber. All used software was tested and remained stable for several days.
KW  - Tissue Engineering
KW  - Bioreaktor
KW  - Organkultur
KW  - Harnleiter
Y1  - 2011
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  - Seynnes, O. R.
A1  - Bojsen-Moller, J.
A1  - Albracht, Kirsten
A1  - Arndt, A.
A1  - Cronin, N. J.
A1  - Finni, T.
A1  - Magnusson, S. P.
T1  - Ultrasound-based testing of tendon mechanical properties: a critical evaluation
JF  - Journal of Applied Physiology
Y1  - 2015
U6  - http://dx.doi.org/10.1152/japplphysiol.00849.2014
SN  - 8750-7587
VL  - 118
IS  - 2
SP  - 133
EP  - 141
ER  - 
TY  - JOUR
A1  - Werkhausen, Amelie
A1  - Cronin, Neil J.
A1  - Albracht, Kirsten
A1  - Paulsen, Gøran
A1  - Larsen, Askild V.
A1  - Bojsen-Møller, Jens
A1  - Seynnes, Olivier R.
T1  - Training-induced increase in Achilles tendon stiffness affects tendon strain pattern during running
JF  - PeerJ
N2  - Background
During the stance phase of running, the elasticity of the Achilles tendon enables the utilisation of elastic energy and allows beneficial contractile conditions for the triceps surae muscles. However, the effect of changes in tendon mechanical properties induced by chronic loading is still poorly understood. We tested the hypothesis that a training-induced increase in Achilles tendon stiffness would result in reduced tendon strain during the stance phase of running, which would reduce fascicle strains in the triceps surae muscles, particularly in the mono-articular soleus.
Methods 
Eleven subjects were assigned to a training group performing isometric singleleg plantarflexion contractions three times per week for ten weeks, and another ten subjects formed a control group. Before and after the training period, Achilles tendon stiffness was estimated, and muscle-tendon mechanics were assessed during running at preferred speed using ultrasonography, kinematics and kinetics.
Results 
Achilles tendon stiffness increased by 18% (P <0:01) in the training group, but the associated reduction in strain seen during isometric contractions was not statistically significant. Tendon elongation during the stance phase of running was similar after training, but tendon recoil was reduced by 30% (P <0:01), while estimated tendon force remained unchanged. Neither gastrocnemius medialis nor soleus fascicle shortening during stance was affected by training.
Discussion 
These results show that a training-induced increase in Achilles tendon
stiffness altered tendon behaviour during running. Despite training-induced changes in tendon mechanical properties and recoil behaviour, the data suggest that fascicle shortening patterns were preserved for the running speed that we examined. The asymmetrical changes in tendon strain patterns supports the notion that simple inseries models do not fully explain the mechanical output of the muscle-tendon unit during a complex task like running.
KW  - Achilles tendon
KW  - Stiffness
KW  - Running
KW  - Tendon properties
KW  - Architectural gear ratio
Y1  - 2019
U6  - http://dx.doi.org/10.7717/peerj.6764
SN  - 21678359
PB  - Peer
CY  - London
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Behr, Marek
A1  - Nicolai, Mike
A1  - Probst, Markus
T1  - Towards Shape Optimization for Ventricular Assist Devices Using Parallel Stabilized FEM
JF  - NIC Symposium 2008 : symposium, 20 - 21 February 2008, Forschungszentrum Jülich ; proceedings / organized by John von Neumann Institute for Computing. Ed. by Gernot Münster; Dietrich Wolf; Manfred Kremer (ed.)
Y1  - 2008
SN  - 978-3-9810843-5-1
N1  - NIC series ; 39
SP  - 325
EP  - 332
PB  - Forschungszentrum
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Stadler, Andreas M.
A1  - Garvey, G. J.
A1  - Bocahut, A.
A1  - Sacquin-Mora, S.
A1  - Digel, Ilya
A1  - Schneider, G. J.
A1  - Natali, F.
A1  - Artmann, Gerhard
A1  - Zaccai, G.
T1  - Thermal fluctuations of haemoglobin from different species : adaptation to temperature via conformational dynamics
JF  - Journal of the Royal Society Interface
N2  - Thermodynamic stability, configurational motions and internal forces of haemoglobin (Hb) of three endotherms (platypus, Ornithorhynchus anatinus; domestic chicken, Gallus gallus domesticus and human, Homo sapiens) and an ectotherm (salt water crocodile, Crocodylus porosus) were investigated using circular dichroism, incoherent elastic neutron scattering and coarse-grained Brownian dynamics simulations. The experimental results from Hb solutions revealed a direct correlation between protein resilience, melting temperature and average body temperature of the different species on the 0.1 ns time scale. Molecular forces appeared to be adapted to permit conformational fluctuations with a root mean square displacement close to 1.2 Å at the corresponding average body temperature of the endotherms. Strong forces within crocodile Hb maintain the amplitudes of motion within a narrow limit over the entire temperature range in which the animal lives. In fully hydrated powder samples of human and chicken, Hb mean square displacements and effective force constants on the 1 ns time scale showed no differences over the whole temperature range from 10 to 300 K, in contrast to the solution case. A complementary result of the study, therefore, is that one hydration layer is not sufficient to activate all conformational fluctuations of Hb in the pico- to nanosecond time scale which might be relevant for biological function. Coarse-grained Brownian dynamics simulations permitted to explore residue-specific effects. They indicated that temperature sensing of human and chicken Hb occurs mainly at residues lining internal cavities in the β-subunits.
Y1  - 2012
U6  - http://dx.doi.org/10.1098/rsif.2012.0364
SN  - 1742-5689
VL  - 9
IS  - 76
SP  - 2845
EP  - 2855
PB  - The Royal Society
CY  - London
ER  - 
TY  - JOUR
A1  - Ciobanu, Octavian
A1  - Staat, Manfred
A1  - Rahimi, Alireza
T1  - The use of open source software in biomechanical finite element analysis
JF  - Buletinul Institutului Politehnic din Iaşi / Universitatea Tehnică Gh. Asachi, Iaşi Secţia 5, Construcţii de maşini = Machine construction = Bulletin of the Polytechnic Institute of Jassy = Izvestija Jasskogo Politechničeskogo Instituta
Y1  - 2008
SN  - 1011-2855
VL  - 54
IS  - 7/8
SP  - 213
EP  - 220
ER  - 
TY  - JOUR
A1  - Zhubanova, Azhar A.
A1  - Digel, Ilya
A1  - Nojima, H.
A1  - Artmann, Gerhard
T1  - The use of bactericidal effects of cluster ions generated by plasma in medical biotechnology
N2  - The most of conventional methods of air purification use the power of a fan to draw in air and pass it through a filter. The problem of bacterial contamination of inner parts of such a type of air conditioners in some cases draws attention towards alternative air-cleaning systems. Some manufacturers offer to use the ozone's bactericidal and deodorizing effects, but the wide spreading of such systems is restricted by the fact that toxic effects of ozone in respect of human beings are well known. In 2000 Sharp Inc. introduced "Plasma Cluster Ions (PCI)" air purification technology, which uses plasma discharge to generate cluster ions (I 0-14 ). This technology has been developed for those customers that are conscious about health and hygiene. In our experiments, we focused on some principal aspects of plasma-generated ions application - time-dependency and irreversibility of bactericidal action, spatial and kinetic characteristics of emitted cluster particles, their chemical targets in the microbial cells.
KW  - Clusterion
KW  - Raumluft
KW  - Luftreiniger
KW  - Plasmacluster ion technology
KW  - Air purification
Y1  - 2007
ER  - 
TY  - JOUR
A1  - Digel, Ilya
A1  - Zhubanova, Azhar A.
A1  - Nojima, H.
A1  - Artmann, Gerhard
T1  - The use of bactericidal effects of cluster ions generated by plasma in medical biotechnology
JF  - Biotechnologija : teorija i praktika (2004)
Y1  - 2004
SN  - 1028-9399
SP  - 46
EP  - 52
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Probst, M.
A1  - Mai, A.
A1  - Tran, L.
A1  - Vonderstein, K.
A1  - Keschenau, P.
A1  - Linde, T.
A1  - Steinseifer, U.
A1  - Behr, M.
A1  - Mottaghy, K.
T1  - The influence of high shear on thrombosis and hemolysis in artificial organs
JF  - Artificial Organs
Y1  - 2010
SN  - 0391-3988
N1  - Special Issue: SI ; Meeting abstract
VL  - 33
IS  - 7
SP  - 426
EP  - 426
ER  - 
TY  - JOUR
A1  - Lyons, W. Berry
A1  - Mikucki, Jill A.
A1  - German, Laura A.
A1  - Welch, Kathleen A.
A1  - Welch, Susan A.
A1  - Gardener, Christopher B.
A1  - Tulaczyk, Slawek M.
A1  - Pettit, Erin C.
A1  - Kowalski, Julia
A1  - Dachwald, Bernd
T1  - The Geochemistry of Englacial Brine from Taylor Glacier, Antarctica
JF  - Journal of Geophysical Research: Biogeosciences
Y1  - 2019
U6  - http://dx.doi.org/10.1029/2018JG004411
SN  - 2169-8961
PB  - Wiley
CY  - Hoboken
ER  - 
TY  - JOUR
A1  - Digel, Ilya
A1  - Temiz Artmann, Aysegül
T1  - The emperor's new body : seeking for a blueprint of limb regeneration in humans
JF  - Stem cell engineering : principles and applications / Gerhard M. Artmann ... eds.
Y1  - 2011
SN  - 978-3-642-11864-7
SP  - 3
EP  - 37
PB  - Springer
CY  - Berlin [u.a.]
ER  - 
TY  - JOUR
A1  - Temiz Artmann, Aysegül
A1  - Cavdar, C.
A1  - Yenicerioglu, Y.
A1  - Caliskan, S.
T1  - The effects of intravenous iron treatment on oxidant stress and erythrocyte deformability in haemodialysis patients. Cavdar, C.; Temiz, A.; Yenicerioglu, Y.; Caliskan, S.; Celik, A.; Sifil, A.; Onvural, B.; Camsari, T.
JF  - Scandinavian Journal of Urology and Nephrology. 37 (2003), H. 1
Y1  - 2003
SN  - 0036-5599
SP  - 77
EP  - 82
ER  - 
TY  - JOUR
A1  - Akimbekov, Nuraly
A1  - Qiao, Xiaohui
A1  - Digel, Ilya
A1  - Abdieva, Gulzhamal
A1  - Ualieva, Perizat
A1  - Zhubanova, Azhar
T1  - The effect of leonardite-derived amendments on soil microbiome structure and potato yield
JF  - Agriculture
N2  - Humic substances originating from various organic matters can ameliorate soil properties, stimulate plant growth, and improve nutrient uptake. Due to the low calorific heating value, leonardite is rather unsuitable as fuel. However, it may serve as a potential source of humic substances. This study was aimed at characterizing the leonardite-based soil amendments and examining the effect of their application on the soil microbial community, as well as on potato growth and tuber yield. A high yield (71.1%) of humic acid (LHA) from leonardite has been demonstrated. Parental leonardite (PL) and LHA were applied to soil prior to potato cultivation. The 16S rRNA sequencing of soil samples revealed distinct relationships between microbial community composition and the application of leonardite-based soil amendments. Potato tubers were planted in pots in greenhouse conditions. The tubers were harvested at the mature stage for the determination of growth and yield parameters. The results demonstrated that the LHA treatments had a significant effect on increasing potato growth (54.9%) and tuber yield (66.4%) when compared to the control. The findings highlight the importance of amending leonardite-based humic products for maintaining the biogeochemical stability of soils, for keeping their healthy microbial community structure, and for increasing the agronomic productivity of potato plants.
Y1  - 2020
U6  - http://dx.doi.org/10.3390/agriculture10050147
VL  - 10
IS  - Art. 147
SP  - 1
EP  - 17
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Attar, Mandana Hossein Zadeh
A1  - Merk, Hans F.
A1  - Kotliar, Konstantin
A1  - Wurpts, Gerda
A1  - Röseler, Stefani
A1  - Moll-Slodowy, Silke
A1  - Plange, Johann
A1  - Baron, Jens Malte
A1  - Balakirski, Galina
T1  - The CD63 basophil activation test as a diagnostic tool for assessing autoimmunity in patients with chronic spontaneous urticaria
JF  - European Journal of Dermatology
Y1  - 2019
U6  - http://dx.doi.org/10.1684/ejd.2019.3680
VL  - 29
IS  - 6
SP  - 614
EP  - 618
ER  - 
TY  - JOUR
A1  - Temiz Artmann, Aysegül
A1  - Saklamaz, Ali
A1  - Comlekci, Abdurrahman
A1  - Caliskan, Sezer
T1  - The beneficial effects of lipid-lowering drugs beyond lipid-lowering effects: A comparative study with pravastatin, atorvastatin, and fenofibrate in patients with type IIa and type IIb hyperlipidemia / Saklamaz, Ali ; Comlekci, Abdurrahman ; Temiz, Aysegu
JF  - Metabolism. 54 (2005), H. 5
Y1  - 2005
SN  - 0026-0495
SP  - 677
EP  - 681
ER  - 
TY  - JOUR
A1  - Waldvogel, Janice
A1  - Ritzmann, Ramona
A1  - Freyler, Kathrin
A1  - Helm, Michael
A1  - Monti, Elena
A1  - Albracht, Kirsten
A1  - Stäudle, Benjamin
A1  - Gollhofer, Albert
A1  - Narici, Marco
T1  - The Anticipation of Gravity in Human Ballistic Movement
JF  - Frontiers in Physiology
N2  - Stretch-shortening type actions are characterized by lengthening of the pre-activated muscle-tendon unit (MTU) in the eccentric phase immediately followed by muscle shortening. Under 1 g, pre-activity before and muscle activity after ground contact, scale muscle stiffness, which is crucial for the recoil properties of the MTU in the subsequent push-off. This study aimed to examine the neuro-mechanical coupling of the stretch-shortening cycle in response to gravity levels ranging from 0.1 to 2 g. During parabolic flights, 17 subjects performed drop jumps while electromyography (EMG) of the lower limb muscles was combined with ultrasound images of the gastrocnemius medialis, 2D kinematics and kinetics to depict changes in energy management and performance. Neuro-mechanical coupling in 1 g was characterized by high magnitudes of pre-activity and eccentric muscle activity allowing an isometric muscle behavior during ground contact. EMG during pre-activity and the concentric phase systematically increased from 0.1 to 1 g. Below 1 g the EMG in the eccentric phase was diminished, leading to muscle lengthening and reduced MTU stretches. Kinetic energy at take-off and performance were decreased compared to 1 g. Above 1 g, reduced EMG in the eccentric phase was accompanied by large MTU and muscle stretch, increased joint flexion amplitudes, energy loss and reduced performance. The energy outcome function established by linear mixed model reveals that the central nervous system regulates the extensor muscles phase- and load-specifically. In conclusion, neuro-mechanical coupling appears to be optimized in 1 g. Below 1 g, the energy outcome is compromised by reduced muscle stiffness. Above 1 g, loading progressively induces muscle lengthening, thus facilitating energy dissipation.
Y1  - 2021
U6  - http://dx.doi.org/10.3389/fphys.2021.614060
SN  - 1664-042X
PB  - Frontiers
CY  - Lausanne
ER  - 
TY  - JOUR
A1  - Heinke, Lars N.
A1  - Knicker, Axel J.
A1  - Albracht, Kirsten
T1  - Test-retest reliability of the internal shoulder rotator muscles' stretch reflex in healthy men
JF  - Journal of Electromyography and Kinesiology
N2  - Until now the reproducibility of the short latency stretch reflex of the internal rotator muscles of the glenohumeral joint has not been identified. Twenty-three healthy male participants performed three sets of external shoulder rotation stretches with various pre-activation levels on two different dates of measurement to assess test-retest reliability. All stretches were applied with a dynamometer acceleration of 104°/s2 and a velocity of 150°/s. Electromyographical response was measured via surface EMG. Reflex latencies showed a pre-activation effect (ƞ2 = 0,355). ICC ranged from 0,735 to 0,909 indicating an overall “good” relative reliability. SRD 95% lay between ±7,0 to ±12,3 ms.. The reflex gain showed overall poor test-retest reproducibility. The chosen methodological approach presented a suitable test protocol for shoulder muscles stretch reflex latency evaluation. A proof-of-concept study to validate the presented methodical approach in shoulder involvement including subjects with clinically relevant conditions is recommended.
KW  - stretch reflex
KW  - shoulder
KW  - test-retest reliability
KW  - intraclass correlation coefficient
KW  - standard error of measurement
Y1  - 2021
U6  - http://dx.doi.org/10.1016/j.jelekin.2021.102611
SN  - 1050-6411
VL  - 62
IS  - Article 102611
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Nomdedeu, Mar Monsonis
A1  - Willen, Christine
A1  - Schieffer, Andre
A1  - Arndt, Hartmut
T1  - Temperature-dependent ranges of coexistence in a model of a two-prey-one-predator microbial food web
JF  - Marine Biology
N2  - The objective of our study was to analyze the effects of temperature on the population dynamics of a three-species food web consisting of two prey bacteria (Pedobacter sp. and Acinetobacter johnsonii) and a protozoan predator (Tetrahymena pyriformis) as model organisms. We assessed the effects of temperature on the growth rates of all three species with the objective of developing a model with four differential equations based on the experimental data. The following hypotheses were tested at a theoretical level: Firstly, temperature changes can affect the dynamic behavior of a system by temperature-dependent parameters and interactions and secondly, food web response to temperature cannot be derived from the single species temperature response. The main outcome of the study is that temperature changes affect the parameter range where coexistence is possible within all three species. This has significant consequences on our ideas regarding the evaluation of effects of global warming.
Y1  - 2012
U6  - http://dx.doi.org/10.1007/s00227-012-1966-x
SN  - 1432-1793
VL  - 159
IS  - 11
SP  - 2423
EP  - 2430
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Seefeldt, Patric
A1  - Dachwald, Bernd
T1  - Temperature increase on folded solar sail membranes
JF  - Advances in Space Research
Y1  - 2021
U6  - http://dx.doi.org/10.1016/j.asr.2020.09.026
SN  - 0273-1177
VL  - 67
IS  - 9
SP  - 2688
EP  - 2695
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Turlybekuly, Amanzhol
A1  - Pogrebnjak, Alexander
A1  - Sukhodub, L. F.
A1  - Sukhodub, Liudmyla B.
A1  - Kistaubayeva, A. S.
A1  - Savitskaya, Irina
A1  - Shokatayeva, D. H.
A1  - Bondar, Oleksandr V.
A1  - Shaimardanov, Z. K.
A1  - Plotnikov, Sergey V.
A1  - Shaimardanova, B. H.
A1  - Digel, Ilya
T1  - Synthesis, characterization, in vitro biocompatibility and antibacterial properties study of nanocomposite materials based on hydroxyapatite-biphasic ZnO micro- and nanoparticles embedded in Alginate matrix
JF  - Materials Science and Engineering C
Y1  - 2019
U6  - http://dx.doi.org/10.1016/j.msec.2019.109965
VL  - 104
IS  - Article number 109965
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Kodomskoi, Leonid
A1  - Kotliar, Konstantin
A1  - Schröder, Andreas
A1  - Weiss, Michael
A1  - Hille, Konrad
T1  - Suture-Probe Canaloplasty as an Alternative to Canaloplasty using the iTrack™ Microcatheter
JF  - Journal of Glaucoma
Y1  - 2019
U6  - http://dx.doi.org/10.1097/IJG.0000000000001321
SN  - 1057-0829
IS  - Epub ahead of print
PB  - Lippincott Williams & Wilkins
CY  - Philadelphia
ER  - 
TY  - JOUR
A1  - Hackl, M.
A1  - Andermahr, J.
A1  - Staat, Manfred
A1  - Bremer, I.
A1  - Borggrefe, J.
A1  - Prescher, A.
A1  - Müller, L. P.
A1  - Wegmann, K.
T1  - Suture button reconstruction of the central band of the interosseous membrane in Essex-Lopresti lesions: a comparative biomechanical investigation
JF  - The Journal of Hand Surgery (European Volume)
Y1  - 2017
U6  - http://dx.doi.org/10.1177/1753193416665943
SN  - 2043-6289 (Online)
SN  - 1753-1934 (Print)
VL  - 42
IS  - 4
SP  - 370
EP  - 376
PB  - Sage
CY  - London
ER  - 
TY  - JOUR
A1  - Digel, Ilya
A1  - Wehlitz, V.
A1  - Kayser, Peter
A1  - Figiel-Lange, A.
A1  - Bassam, R.
A1  - Rundstedt, F. von
T1  - Suspension depletion approach for exemption of infected Solanum jasminoides cells from pospiviroids
JF  - Plant Pathology
N2  - Despite numerous studies, viroid elimination from infected plants remains a very challenging task. This study introduces for the first time a novel ‘suspension depletion’ approach for exemption of Solanum jasminoides plants from viroids. The proposed method implies initial establishment of suspension cultures of the infected plant cells. The suspended cells were then physically treated (mild thermotherapy, 33 °C), which presumably delayed the replication of the viroid. The viroid concentration in the treated biomass was monitored weekly using pospiviroid-specific PCR. After 10–12 weeks of continuous treatment, a sufficient decrease in viroid concentration was observed such that the infection became undetectable by PCR. The treated single cells then gave rise to microcolonies on a solid culture medium and the obtained viroid-negative clones were further promoted to regenerate into viroid-free plants. Three years of accumulated experimental data suggests feasibility, broad applicability, and good efficacy of the proposed approach.
Y1  - 2018
U6  - http://dx.doi.org/10.1111/ppa.12750
SN  - 1365-3059
VL  - 67
IS  - 2
SP  - 358
EP  - 365
PB  - Wiley
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Bhattarai, Aroj
A1  - Jabbari, Medisa
A1  - Anding, Ralf
A1  - Staat, Manfred
T1  - Surgical treatment of vaginal vault prolapse using different prosthetic mesh implants: a finite element analysis
JF  - tm - Technisches Messen
N2  - Particularly multiparous elderly women may suffer from vaginal vault prolapse after hysterectomy due to weak support from lax apical ligaments. A decreased amount of estrogen and progesterone in older age is assumed to remodel the collagen thereby reducing tissue stiffness. Sacrocolpopexy is either performed as open or laparoscopic surgery using prosthetic mesh implants to substitute lax ligaments. Y-shaped mesh models (DynaMesh, Gynemesh, and Ultrapro) are implanted in a 3D female pelvic floor finite element model in the extraperitoneal space from the vaginal cuff to the first sacral (S1) bone below promontory. Numerical simulations are conducted during Valsalva maneuver with weakened tissues modeled by reduced tissue stiffness. Tissues are modeled as incompressible, isotropic hyperelastic materials whereas the meshes are modeled either as orthotropic linear elastic or as isotropic hyperlastic materials. The positions of the vaginal cuff and the bladder base are calculated from the pubococcygeal line for female pelvic floor at rest, for prolapse and after repair using the three meshes. Due to mesh mechanics and mesh pore deformation along the loaded direction, the DynaMesh with regular rectangular mesh pores is found to provide better mechanical support to the organs than the Gynemesh and the Ultrapro with irregular hexagonal mesh pores.

Insbesondere ältere, mehrgebährende Frauen leiden häufiger an einem Scheidenvorfall nach einer Hysterektomie aufgrund der schwachen Unterstützung durch laxe apikale Bänder. Es wird angenommen, dass eine verringerte Menge an Östrogen und Progesteron im höheren Alter das Kollagen umformt, wodurch die Gewebesteifigkeit reduziert wird. Die Sakrokolpopexie ist eine offene oder laparoskopische Operation, die mit prothetischen Netzimplantaten durchgeführt wird, um laxe Bänder zu ersetzen. Y-förmige Netzmodelle (DynaMesh, Gynemesh und Ultrapro) werden in einem 3D-Modell des weiblichen Beckenbodens im extraperitonealen Raum vom Vaginalstumpf bis zum Promontorium implantiert. Numerische Simulationen werden während des Valsalva-Manövers mit geschwächtem Gewebe durchgeführt, das durch eine reduzierte Gewebesteifigkeit modelliert wird. Die Gewebe werden als inkompressible, isotrop hyperelastische Materialien modelliert, während die Netze entweder als orthotrope linear elastische oder als isotrope hyperlastische Materialien modelliert werden. Die Positionen des Vaginalstumpfs, der Blase und der Harnröhrenachse werden anhand der Pubococcygeallinie aus der Ruhelage, für den Prolaps und nach der Reparatur unter Verwendung der drei Netze berechnet. Aufgrund der Netzmechanik und der Netzporenverformung bietet das DynaMesh mit regelmäßigen rechteckigen Netzporen eine bessere mechanische Unterstützung und eine Neupositionierung des Scheidengewölbes, der Blase und der Urethraachse als Gynemesh und Ultrapro mit unregelmäßigen hexagonalen Netzporen.
Y1  - 2018
U6  - http://dx.doi.org/10.1515/teme-2017-0115
SN  - 2196-7113
VL  - 85
IS  - 5
SP  - 331
EP  - 342
PB  - De Gruyter
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Balakirski, Galina
A1  - Kotliar, Konstantin
A1  - Pauly, Karolin J.
A1  - Krings, Laura K.
A1  - Rübben, Albert
A1  - Baron, Jens M.
A1  - Schmitt, Laurenz
T1  - Surgical Site Infections After Dermatologic Surgery in Immunocompromised Patients: A Single-Center Experience
JF  - Dermatologic Surgery
N2  - BACKGROUND 
Immunosuppression is often considered as an indication for antibiotic prophylaxis to prevent surgical site infections (SSI) while performing skin surgery. However, the data on the risk of developing SSI after dermatologic surgery in immunosuppressed patients are limited.

PATIENTS AND METHODS 
All patients of the Department of Dermatology and Allergology at the University Hospital of RWTH Aachen in Aachen, Germany, who underwent hospitalization for a dermatologic surgery between June 2016 and January 2017 (6 months), were followed up after surgery until completion of the wound healing process. The follow-up addressed the occurrence of SSI and the need for systemic antibiotics after the operative procedure. Immunocompromised patients were compared with immunocompetent patients. The investigation was conducted as a retrospective analysis of patient records.

RESULTS 
The authors performed 284 dermatologic surgeries in 177 patients. Nineteen percent (54/284) of the skin surgery was performed on immunocompromised patients. The most common indications for surgical treatment were nonmelanoma skin cancer and malignant melanomas. Surgical site infections occurred in 6.7% (19/284) of the cases. In 95% (18/19), systemic antibiotic treatment was needed. Twenty-one percent of all SSI (4/19) were seen in immunosuppressed patients.

CONCLUSION 
According to the authors' data, immunosuppression does not represent a significant risk factor for SSI after dermatologic surgery. However, larger prospective studies are needed to make specific recommendations on the use of antibiotic prophylaxis while performing skin surgery in these patients.

The available data on complications after dermatologic surgery have improved over the past years. Particularly, additional risk factors have been identified for surgical site infections (SSI). Purulent surgical sites, older age, involvement of head, neck, and acral regions, and also the involvement of less experienced surgeons have been reported to increase the risk of the SSI after dermatologic surgeries.1 In general, the incidence of SSI after skin surgery is considered to be low.1,2 However, antibiotics in dermatologic surgeries, especially in the perioperative setting, seem to be overused,3,4 particularly regarding developing antibiotic resistances and side effects.

Immunosuppression has been recommended to be taken into consideration as an additional indication for antibiotic prophylaxis to prevent SSI after skin surgery in special cases.5,6 However, these recommendations do not specify the exact dermatologic surgeries, and were not specifically developed for dermatologic surgery patients and treatments, but adopted from other surgical fields.6 According to the survey conducted on American College of Mohs Surgery members in 2012, 13% to 29% of the surgeons administered antibiotic prophylaxis to immunocompromised patients to prevent SSI while performing dermatologic surgery on noninfected skin,3 although this was not recommended by Journal of the American Academy of Dermatology Advisory Statement. Indeed, the data on the risk of developing SSI after dermatologic surgery in immunosuppressed patients are limited. However, it is possible that due to the insufficient evidence on the risk of SSI occurrence in this patient group, dermatologic surgeons tend to overuse perioperative antibiotic prophylaxis.

To make specific recommendations on the use of antibiotic prophylaxis in immunosuppressed patients in the field of skin surgery, more information about the incidence of SSI after dermatologic surgery in these patients is needed. The aim of this study was to fill this data gap by investigating whether there is an increased risk of SSI after skin surgery in immunocompromised patients compared with immunocompetent patients.
Y1  - 2018
U6  - http://dx.doi.org/10.1097/DSS.0000000000001615
IS  - 44 (12)
SP  - 1525
EP  - 1536
PB  - Wolters Kluwer
ER  - 
TY  - JOUR
A1  - Hamou, Hussam Aldin
A1  - Kotliar, Konstantin
A1  - Tan, Sonny Kian
A1  - Weiß, Christel
A1  - Blume, Christian
A1  - Clusmann, Hans
A1  - Schubert, Gerrit Alexander
A1  - Albanna, Walid
T1  - Surgical nuances and placement of subgaleal drains for supratentorial procedures—a prospective analysis of efficacy and outcome in 150 craniotomies
JF  - Acta Neurochirurgica
N2  - Background
For supratentorial craniotomy, surgical access, and closure technique, including placement of subgaleal drains, may vary considerably. The influence of surgical nuances on postoperative complications such as cerebrospinal fluid leakage or impaired wound healing overall remains largely unclear. With this study, we are reporting our experiences and the impact of our clinical routines on outcome in a prospectively collected data set.

Method
We prospectively observed 150 consecutive patients undergoing supratentorial craniotomy and recorded technical variables (type/length of incision, size of craniotomy, technique of dural and skin closure, type of dressing, and placement of subgaleal drains). Outcome variables (subgaleal hematoma/CSF collection, periorbital edema, impairment of wound healing, infection, and need for operative revision) were recorded at time of discharge and at late follow-up.

Results
Early subgaleal fluid collection was observed in 36.7% (2.8% at the late follow-up), and impaired wound healing was recorded in 3.3% of all cases, with an overall need for operative revision of 6.7%. Neither usage of dural sealants, lack of watertight dural closure, and presence of subgaleal drains, nor type of skin closure or dressing influenced outcome. Curved incisions, larger craniotomy, and tumor size, however, were associated with an increase in early CSF or hematoma collection (p < 0.0001, p = 0.001, p < 0.01 resp.), and larger craniotomy size was associated with longer persistence of subgaleal fluid collections (p < 0.05).

Conclusions
Based on our setting, individual surgical nuances such as the type of dural closure and the use of subgaleal drains resulted in a comparable complication rate and outcome. Subgaleal fluid collections were frequently observed after supratentorial procedures, irrespective of the closing technique employed, and resolve spontaneously in the majority of cases without significant sequelae. Our results are limited due to the observational nature in our single-center study and need to be validated by supportive prospective randomized design.
Y1  - 2020
U6  - http://dx.doi.org/10.1007/s00701-019-04196-6
SN  - 0942-0940
VL  - 2020
IS  - 162
SP  - 729
EP  - 736
PB  - Springer Nature
CY  - Cham
ER  - 
TY  - JOUR
A1  - Zerlin, Kay
A1  - Kasischke, Nicole
A1  - Digel, Ilya
A1  - Maggakis-Kelemen, Christina
A1  - Temiz Artmann, Aysegül
A1  - Porst, Dariusz
A1  - Kayser, Peter
A1  - Linder, Peter
A1  - Artmann, Gerhard
T1  - Structural transition temperature of hemoglobins correlates with species’ body temperature
JF  - European Biophysics Journal. 37 (2007), H. 1
Y1  - 2007
SN  - 1432-1017
SP  - 1
EP  - 10
ER  - 
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  - Frotscher, Ralf
A1  - Staat, Manfred
T1  - Stresses produced by different textile mesh implants in a tissue equivalent
JF  - BioNanoMaterials
N2  - Two single-incision mini-slings used for treating urinary incontinence in women are compared with respect to the stresses they produce in their surrounding tissue. In an earlier paper we experimentally observed that these implants produce considerably different stress distributions in a muscle tissue equivalent. Here we perform 2D finite element analyses to compare the shear stresses and normal stresses in the tissue equivalent for the two meshes and to investigate their failure behavior. The results clearly show that the Gynecare TVT fails for increasing loads in a zipper-like manner because it gradually debonds from the surrounding tissue. Contrary to that, the tissue at the ends of the DynaMesh-SIS direct may rupture but only at higher loads. The simulation results are in good agreement with the experimental observations thus the computational model helps to interpret the experimental results and provides a tool for qualitative evaluation of mesh implants.
Y1  - 2014
U6  - http://dx.doi.org/10.1515/bnm-2014-0003
SN  - 2191-4672 (E-Journal); 2193-066X (E-Journal); 0011-8656 (Print); 1616-0177 (Print); 2193-0651 (Print)
VL  - 15
IS  - 1-2
SP  - 25
EP  - 30
PB  - De Gruyter
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Turaliyeva, M.
A1  - Yeshibaev, A.
A1  - Saparbekova, A.
A1  - Akynova, L.
A1  - Abildayeva, R.
A1  - Sadenova, M.
A1  - Sartayeva, K.
A1  - Schieffer, Andre
A1  - Digel, Ilya
T1  - Species composition and injuriousness of stranger xylophilous fauna affecting indigenous urban dendroflora of Central Asia
JF  - Asian journal of microbiology, biotechnology & environmental sciences : AJMBES
N2  - At the present time, one of the most serious environmental problems of Central Asia and South Kazakhstan is the ongoing large-scale deterioration of principal urban tree populations. Several major centers of massive spread of invasive plant pests have been found in urban dendroflora of this region. The degree of damage of seven most wide-spread aboriginal tree species was found to range from 21.4±1.1 to 85.4±1.8%. In particular, the integrity of the native communities of sycamore (Platanus spp.), willow (Salix spp.), poplar (Populus spp.) and elm (Ulmus spp.) is highly endangered. Our taxonomic analysis of the most dangerous tree pests of the region has revealed them as neobiontic xylophilous insects such as Cossus cossus L. (Order: Lepidoptera L.) Monochamus urussovi Fisch., Monochamus sutor L., Acanthocinus aedelis L. and Ñetonia aureate L. (Order: Coleoptera L.). We relate the origin of this threatening trend with the import of industrial wood in the mid 90’s of the last century that was associated with high degree of the constructional work in the region. Because of the absence of efficient natural predators of the pest species, the application of microbiological methods of the pest control and limitation is suggested.
Y1  - 2016
SN  - 0972-3005
VL  - 18
IS  - 2
SP  - 359
EP  - 366
PB  - EM International
ER  - 
TY  - JOUR
A1  - Grundmann, Jan Thimo
A1  - Dachwald, Bernd
A1  - Grimm, Christian D.
A1  - Kahle, Ralph
A1  - Koch, Aaron Dexter
A1  - Krause, Christian
A1  - Lange, Caroline
A1  - Quantius, Dominik
A1  - Ulamec, Stephan
T1  - Spacecraft for Hypervelocity Impact Research – An Overview of Capabilities, Constraints and the Challenges of Getting There
JF  - Procedia Engineering
Y1  - 2015
U6  - http://dx.doi.org/10.1016/j.proeng.2015.04.021
SN  - 1877-7058
N1  - Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS 2015)
VL  - Vol. 103
SP  - 151
EP  - 158
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Staat, Manfred
T1  - Some Achievements of the European Project LISA for FEM Based Limit and Shakedown Analysis
JF  - Computational mechanics : developments and applications, 2002 : presented at the 2002 ASME Pressure Vessels and Piping Conference, Vancouver, British Columbia, Canada, August 5 - 9. / Badie, N. [ed]
Y1  - 2002
SN  - 0791846520
N1  - Serie PVP ; vol. 441.
SP  - 177
EP  - 185
PB  - American Society of Mechanical Engineers
CY  - New York
ER  - 
TY  - JOUR
A1  - Peloni, Alessandro
A1  - Ceriotti, Matteo
A1  - Dachwald, Bernd
T1  - Solar-sail trajectory design for a multiple near-earth-asteroid rendezvous mission
JF  - Journal of Guidance, Control, and Dynamics
N2  - The scientific interest for near-Earth asteroids as well as the interest in potentially hazardous asteroids from the perspective of planetary defense led the space community to focus on near-Earth asteroid mission studies. A multiple near-Earth asteroid rendezvous mission with close-up observations of several objects can help to improve the characterization of these asteroids. This work explores the design of a solar-sail spacecraft for such a mission, focusing on the search of possible sequences of encounters and the trajectory optimization. This is done in two sequential steps: a sequence search by means of a simplified trajectory model and a set of heuristic rules based on astrodynamics, and a subsequent optimization phase. A shape-based approach for solar sailing has been developed and is used for the first phase. The effectiveness of the proposed approach is demonstrated through a fully optimized multiple near-Earth asteroid rendezvous mission. The results show that it is possible to visit five near-Earth asteroids within 10 years with near-term solar-sail technology.
Y1  - 2016
U6  - http://dx.doi.org/10.2514/1.G000470
SN  - 0731-5090
VL  - 39
IS  - 12
SP  - 2712
EP  - 2724
PB  - AIAA
CY  - Reston, Va.
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.
T1  - Solar Sails for Near- and Medium-Term Scientific Deep Space Missions / W. Sebolt ; B. Dachwald
JF  - In-space propulsion : edited book of proceedings of the 10-IWCP, the 10th International Workshop on Combustion and Propulsion held in Lerici, La Spezia, Italy, 21-25 September 2003 / [ed.: Luigi T. DeLuca]
Y1  - 2005
N1  - Paper 31 ; International workshop on combustion and propulsion <10, 2003, Lerici>
PB  - SP Lab, Politecnico di Milano
CY  - Milano
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Kahle, Ralph
A1  - Wie, Bong
T1  - Solar Sailing Kinetic Energy Impactor (KEI) Mission Design Tradeoffs for Impacting and Deflecting Asteroid 99942 Apophis
JF  - AIAA Guidance, Navigation, and Control Conference & Exhibit - AIAA Atmospheric Flight Mechanics Conference & Exhibit - AIAA Modeling and Simulation Technologies Conference & Exhibit - AIAA/AAS Astrodynamics Specialist Conference & Exhibit : [21 - 24 August 2006, Keystone, Colorado ; papers]. - (AIAA meeting papers on disc ; [11.]2006,19-20 )
Y1  - 2006
SN  - 1-56347-802-1
N1  - American Institute of Aeronautics and Astronautics <Reston, Va.> ; American Astronautical Society ; AIAA/AAS Astrodynamics Specialist Conference & Exhibit <2006,  Keystone, Colo.> ; AIAA paper number: AIAA-2006-6178
SP  - 1
EP  - 20
PB  - American Institute of Aeronautics and Astronautics
CY  - Reston, Va.
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Seboldt, Wolfgang
T1  - Solar sailcraft of the first generation technology development / Seboldt, Wolfgang ; Dachwald, Bernd
Y1  - 2003
N1  - 54th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law 29 September - 3 October 2003, Bremen, Germany IAC-03-S.03
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Seboldt, Wolfgang
T1  - Solar sailcraft of the first generation mission applications to near-earth asteroids
Y1  - 2003
N1  - 54th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law 29 September - 3 October 2003, Bremen, Germany IAC-03-Q.5.06
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Ohndorf, A.
A1  - Wie, Bong
T1  - Solar Sail Trajectory Optimization for the Solar Polar Imager (SPI) Mission
JF  - AIAA Guidance, Navigation, and Control Conference & Exhibit - AIAA Atmospheric Flight Mechanics Conference & Exhibit - AIAA Modeling and Simulation Technologies Conference & Exhibit - AIAA/AAS Astrodynamics Specialist Conference & Exhibit : [21 - 24 August 2006, Keystone, Colorado ; papers]. - (AIAA meeting papers on disc ; [11.]2006,19-20 )
Y1  - 2006
SN  - 1-56347-802-1
N1  - American Institute of Aeronautics and Astronautics <Reston, Va.> ; American Astronautical Society ; AIAA/AAS Astrodynamics Specialist Conference & Exhibit <2006,  Keystone, Colo.> ; AIAA paper number: AIAA-2006-6177
PB  - American Institute of Aeronautics and Astronautics
CY  - Reston, Va.
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Wie, Bong
T1  - Solar Sail Trajectory Optimization for Intercepting, Impacting, and Deflecting Near-Earth Asteroids
JF  - AIAA Guidance, Navigation and Control Conference and Exhibit - AIAA Modeling and Simulation Technologies Conference and Exhibit - AIAA Atmospheric Flight Mechanics Conference and Exhibit : [San Francisco, California, 15 - 18 August 2005 ; papers]. - (AIAA meeting papers on disc ; [10.]2005,16-17)
Y1  - 2005
SN  - 1-56347-765-3
N1  - American Institute of Aeronautics and Astronautics <Reston, Va.> ; AIAA Guidance, Navigation, and Control Conference and Exhibit <2005, San Francisco, Calif.> ; AIAA paper number: AIAA-2006-6176
PB  - American Institute of Aeronautics and Astronautics
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  - Dachwald, Bernd
A1  - Wi, Bong
T1  - Solar Sail Kinetic Energy Impactor Trajectory Optimization for an Asteroid-Deflection Mission
JF  - Journal of Spacecraft and Rockets. 44 (2007), H. 4
Y1  - 2007
SN  - 0022-4650
N1  - 2. ISSN: 1533-6794
SP  - 755
EP  - 764
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  - Behbahani, Mehdi
A1  - Nicolai, M.
A1  - Probst, M.
A1  - Behr, M.
T1  - Simulation of Blood Flow in a Ventricular Assist Device
JF  - inSIDE. 5 (2007), H. 1
Y1  - 2007
SP  - 28
EP  - 31
ER  - 
TY  - JOUR
A1  - Hackl, Michael
A1  - Kahmann, Stephanie Lucina
A1  - Wegmann, Kilian
A1  - Ries, Christian
A1  - Staat, Manfred
A1  - Müller, Lars-Peter
T1  - Shortening osteotomy of the proximal radius — a treatment option for isolated osteoarthritis of the lateral column of the elbow joint?
JF  - Knee surgery, sports traumatology, arthroscopy
N2  - Treatment of posttraumatic osteoarthritis of the radial column of the elbow joint remains a challenging yet common issue.
While partial joint replacement leads to high revision rates, radial head excision has shown to severely increase joint instability. Shortening osteotomy of the radius could be an option to decrease the contact pressure of the radiohumeral joint and thereby pain levels without causing valgus instability. Hence, the aim of this biomechanical study was to evaluate the effects of radial shortening on axial load distribution and valgus stability of the elbow joint.
Y1  - 2016
U6  - http://dx.doi.org/10.1007/s00167-016-4080-7
SN  - 0942-2056
VL  - Volume 24
IS  - Supplement 1
SP  - 128
EP  - 129
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Staat, Manfred
A1  - Heitzer, M.
A1  - Reiners, H.
A1  - Schubert, F.
T1  - Shakedown and ratchetting under tension–torsion loadings: analysis and experiments
JF  - Nuclear Engineering and Design. 225 (2003), H. 1
Y1  - 2003
SN  - 0029-5493
SP  - 11
EP  - 26
ER  - 
TY  - JOUR
A1  - Staat, Manfred
T1  - Shakedown and ratchetting under tension-torsion loadings: analysis and experiments
N2  - Structural design analyses are conducted with the aim of verifying the exclusion of ratchetting. To this end it is important to make a clear distinction between the shakedown range and the ratchetting range. The performed experiment comprised a hollow tension specimen which was subjected to alternating axial forces, superimposed with constant moments. First, a series of uniaxial tests has been carried out in order to calibrate a bounded kinematic hardening rule. The load parameters have been selected on the basis of previous shakedown analyses with the PERMAS code using a kinematic hardening material model. It is shown that this shakedown analysis gives reasonable agreement between the experimental and the numerical results. A linear and a nonlinear kinematic hardening model of two-surface plasticity are compared in material shakedown analysis.
KW  - Einspielen <Werkstoff>
KW  - Einspielen
KW  - Ratchetting
KW  - Zug-Druck Belastung
KW  - shakedown
KW  - ratchetting
KW  - tension–torsion loading
Y1  - 2003
ER  -