Michael May, Olaf Hesebeck, Stephan Marzi, Wolfgang Böhme, Jörg Lienhard, Sebastian Kilchert, Markus Brede, Stefan Hiermaier,
The mechanical properties of crash-optimized adhesive BETAMATE 1496V are characterized over a wide range of strain rates. The information gathered from the mechanical tests are used for developing a fully rate-dependent constitutive law for cohesive interface elements considering both, the strain rate dependency of the initiation stress and the strain rate dependency of the fracture toughness. The model is calibrated and verified against experimental data for tapered double cantilever beam (TDCB) ...
Tópico(s): High-Velocity Impact and Material Behavior
2014 - Elsevier BV | Engineering Fracture Mechanics
T. Saplinova, C. Lehnert, Uwe Böhme, Jörg Wagler, Edwin Kroke,
Iminophosphorane derivatives of s-triazine and tri-s-triazine, C3N3(NPCl3)3 (1), [H2C3N3NH2(NPPh3)2]Br2 (2), [HC3N3NH2(NPPh3)2]Br (3), C6N7(NPCl3)3 (5), [HC6N7(NPCl3)3]Cl (6) were obtained by the Kirsanov reaction of melamine (1–3) and melem (5 and 6) with halogenated phosphorus compounds. The products were characterized by FTIR and solution NMR spectroscopy as well as by single-crystal X-ray diffraction. Additionally, in order to investigate the electron density distribution in the s-triazine or s-heptazine ...
Tópico(s): Organophosphorus compounds synthesis
2010 - Royal Society of Chemistry | New Journal of Chemistry
Niels Hammer, Hanno Steinke, J. Böhme, Jörg Stadler, Christoph Josten, Katharina Spanel‐Borowski,
The iliolumbar ligament (IL) was examined using morphometric and virtual methods.A macroscopic study was performed to measure the anterior (AIL) and the posterior part of the IL (PIL).Though being a widely accepted cause of low back pain and lumbosacral instability, the IL is neglected in computer-based biomechanical studies due to the lack of morphometric information.Frozen sections prepared from 29 human subjects were measured and 7-tesla MR images made to distinguish the AIL and PIL. Cuboids were ...
Tópico(s): Shoulder Injury and Treatment
2010 - Elsevier BV | Annals of Anatomy - Anatomischer Anzeiger
Kewei Yu, Frank Böhme, Jörg Rinklebe, H. U. Neue, Ronald D. DeLaune,
Six soils used for rice ( Oryza sativa L.) production were incubated using an automatic microcosm system. Production of trace gases (CO 2 , CH 4 , and N 2 O) and transformation of N, S, and metals (Fe and Mn) were studied in soil suspensions incubated from reducing to oxidizing conditions. Results show that soil pH variation was inversely correlated to soil redox potential (E H ) change ( P < 0.01). Soil CO 2 production exponentially increased with soil E H increase. In contrast, soil CH 4 production and DOC showed ...
Tópico(s): Clay minerals and soil interactions
2007 - Wiley | Soil Science Society of America Journal
Frank Böhme, Jörg Rinklebe, Hans‐Joachim Stärk, Rainer Wennrich, Sibylle Mothes, H. U. Neue,
Tópico(s): Toxic Organic Pollutants Impact
2005 - Springer Science+Business Media | Environmental Science and Pollution Research
Rudolf Taube, Peter Böhme, Jörg‐Peter Gehrke,
By partial protolysis of η3,η2,η3-dodeca-2(Z),6(E),10(Z)-trien-1,12-diylnickel(II) with hexafluorophosphoric and hexafluoroantimonic acid the complexes given in the title were prepared. Structure and coordination of the C12-chain could be elucidated NMR-spectroscopically and a rapid anti—syn isomerization proceeding already at deep temperature could be proved. In agreement with the reaction mechanism for the allyl nickel complex catalyzed butadiene polymerization derived by us both complexes catalyse ...
Tópico(s): Coordination Chemistry and Organometallics
1990 - Elsevier BV | Journal of Organometallic Chemistry
Christian Posern, Uwe Böhme, Jörg Wagler, Carl‐Christoph Höhne, Edwin Kroke,
Abstract In contrast to numerous thio‐ and selenocyanuric acid derivatives, sulfur‐ or selenium‐containing s ‐heptazines have not been reported so far. Thio‐ and selenocyameluric acid esters were obtained by substitution reactions of s ‐heptazine chloride C 6 N 7 Cl 3 with aromatic thiols and selenophenol; the resultant white or yellow solids were stable in air. They were comprehensively characterized by elemental analysis, 1 H, 13 C NMR, and IR spectroscopy. The thiocyameluric acid phenyl ester ( 1 , ...
Tópico(s): Synthesis and biological activity
2017 - Wiley | Chemistry - A European Journal
Andreas Höch, Philipp Pieroh, Ralf Henkelmann, Christoph Josten, Jörg Böhme,
The incidence of pelvic ring fractures in the elderly significantly increased. Because of persistent pain and immobilization associated with this injury, surgical treatment is recommended. To minimise comorbidities and surgical risk, percutaneous techniques are becoming more relevant. In-screw cement augmentation of sacroiliac screw fixation is a promising procedure; however, clinical follow-up data remain scarce. This study investigated the safety and possible complications of the procedure along ...
Tópico(s): Spinal Fractures and Fixation Techniques
2017 - BioMed Central | BMC Surgery
Vickie Shim, Andreas Höch, Ronny Grunert, Steffen Peldschus, Jörg Böhme,
Introduction. The main purpose of this study is to develop an efficient technique for generating FE models of pelvic ring fractures that is capable of predicting possible failure regions of osteosynthesis with acceptable accuracy. Methods. Patient-specific FE models of two patients with osteoporotic pelvic fractures were generated. A validated FE model of an uninjured pelvis from our previous study was used as a master model. Then, fracture morphologies and implant positions defined by a trauma ...
Tópico(s): Bone fractures and treatments
2017 - Hindawi Publishing Corporation | Computational and Mathematical Methods in Medicine
Andreas Höch, Richard Schimpf, Niels Hammer, Stefan Schleifenbaum, Michael Werner, Christoph Josten, Jörg Böhme,
Cement augmentation of pedicle screws is the gold standard for the stabilization of osteoporotic fractures of the spine. In-screw cement augmentation, in which cement is injected through the cannula, is another option for fracture stabilization of fragility fractures of the sacrum. However, biomechanical superiority of this technique compared to conventional sacroiliac screw fixation has not been tested. The present study compares the stability of cement-augmented and non-cement-augmented sacroiliac ...
Tópico(s): Pregnancy-related medical research
2017 - De Gruyter | Biomedical Engineering / Biomedizinische Technik
Philipp Pieroh, Sebastian Schneider, Uwe Lingslebe, Freddy Sichting, Thomas Wolfskämpf, Christoph Josten, Jörg Böhme, Niels Hammer, Hanno Steinke,
The ligaments in coherence with the capsule of the hip joint are known to contribute to hip stability. Nevertheless, the contribution of the mechanical properties of the ligaments and gender- or side-specific differences are still not completely clear. To date, comparisons of the hip capsule ligaments to other tissues stabilizing the pelvis and hip joint, e.g. the iliotibial tract, were not performed.Hip capsule ligaments were obtained from 17 human cadavers (9 females, 7 males, 13 left and 8 right ...
Tópico(s): Shoulder Injury and Treatment
2016 - Public Library of Science | PLoS ONE
Andreas Höch, Orkun Özkurtul, Philipp Pieroh, Christoph Josten, Jörg Böhme,
Osteoporotic pelvic ring fractures are a rising problem for surgeons in industrialized countries. There is no evidence-based treatment strategy especially for lateral compression (LC) fractures involving the sacrum. The aim of this study was to evaluate and compare outcome and survival rate of nonoperative and operative treatment strategies for lateral compression fractures.In a retrospective study, 128 patients (aged ≥65 years) with an Orthopedic Trauma Association (OTA) types B2.1 and B3.3 fracture ...
Tópico(s): Hip and Femur Fractures
2016 - SAGE Publishing | Geriatric Orthopaedic Surgery & Rehabilitation
Julian Fürmetz, Chris Soo, Wolf Behrendt, Peter Helmut Thaller, Holger Siekmann, Jörg Böhme, Christoph Josten,
A common treatment of tibial defects especially after infections is bone transport via external fixation. We compare complications and outcomes of 25 patients treated with a typical Ilizarov frame or a hybrid system for bone reconstruction of the tibia. Average follow up was 5.1 years. Particular interest was paid to the following criteria: injury type, comorbidities, development of osteitis and outcome of the different therapies. The reason for segmental resection was a second or third grade open ...
Tópico(s): Orthopaedic implants and arthroplasty
2016 - PAGEPress (Italy) | Orthopedic Reviews
Jörg Böhme, Uwe Lingslebe, Hanno Steinke, Michael Werner, Volker Slowik, Christoph Josten, Niels Hammer,
ABSTRACT Surgical stabilization of the pelvis following type II anteroposterior compression pelvic injuries (APCII) is based on the assumption that the anterior sacroiliac, sacrospinous, and sacrotuberous ligaments disrupt simultaneously. Recent data on the ligaments contradict this concept. We aimed at determining the mechanisms of ligament failure in APCII computationally. In an individual osteoligamentous computer model of the pelvis, ligament load, and strain were observed for the two‐leg stance, ...
Tópico(s): Spinal Fractures and Fixation Techniques
2014 - Wiley | Journal of Orthopaedic Research®
Johannes Fakler, Franziska Hase, Jörg Böhme, Christoph Josten,
Pathologic fractures of the femoral intertrochanteric and subtrochanteric region require special consideration in terms of biomechanically stable fixation and durability of the implant. In addition, the type of surgery might also influence patient survival. We conducted this retrospective study to evaluate the safety of modular proximal femur replacement compared to intramedullary nailing with patient survival being the primary and complications the secondary endpoint.We retrospectively studied ...
Tópico(s): Bone fractures and treatments
2013 - BioMed Central | Patient Safety in Surgery
Niels Hammer, Hanno Steinke, Uwe Lingslebe, Ingo Bechmann, Christoph Josten, Volker Slowik, Jörg Böhme,
Background context The influence of the posterior pelvic ring ligaments on pelvic stability is poorly understood. Low back pain and sacroiliac joint (SIJ) pain are described being related to these ligaments. Computational approaches involving finite element (FE) modeling may aid to determine their influence. Previous FE models lacked in precise ligament geometries and material properties, which might have influence on the results. Purpose and study design The aim of this study is to investigate ligamentous ...
Tópico(s): Spine and Intervertebral Disc Pathology
2013 - Elsevier BV | The Spine Journal
Vickie Shim, Jörg Böhme, Peter Vaitl, Stefan Klima, Christoph Josten, Iain A. Anderson,
Tópico(s): Hip and Femur Fractures
2010 - Elsevier BV | Journal of Biomechanics
Hanno Steinke, Uwe Lingslebe, Jörg Böhme, Volker Slowik, Vickie Shim, Carsten Hädrich, Niels Hammer,
The iliotibial tract (tract) is an important structure for the biomechanics of both the hip and knee joint. While a detailed characterization of its mechanical properties might help to better understand its specific role in the load transfer from the pelvis to femur and tibia, determination of those properties is complicated by its particular structure of thin fibers in the fresh state. Moreover, although the tracts mechanical properties are often derived from cadaveric material chemically fixed ...
Tópico(s): Lower Extremity Biomechanics and Pathologies
2012 - Elsevier BV | Medical Engineering & Physics
Daniel Behrendt, Maria Mütze, Hanno Steinke, Martin Koestler, Christoph Josten, Jörg Böhme,
Tópico(s): Hernia repair and management
2011 - Springer Science+Business Media | International Journal of Computer Assisted Radiology and Surgery
Hanno Steinke, Niels Hammer, Volker Slowik, Jörg Stadler, Christoph Josten, Jörg Böhme, Katharina Spanel‐Borowski,
The ligaments of the human sacroiliac joint (SIJ) were investigated morphometrically.A macroscopical study was performed to measure the anterior sacroiliac ligament (ASL), the interosseous sacroiliac ligament (ISL), and the posterior sacroiliac ligament (PSL), applying different methods of ligament visualization.Little is known about the SIJ ligaments, especially about the ISL. Pelvic computer simulations neglect these ligaments due to the lack of information. Computer simulations of the SIJ ligaments ...
Tópico(s): Scoliosis diagnosis and treatment
2010 - Lippincott Williams & Wilkins | Spine
Ralf Henkelmann, Sebastian Schneider, Daniel Müller, Ralf Gahr, Christoph Josten, Jörg Böhme,
Partial or complete immobilization leads to different adjustment processes like higher risk of muscle atrophy or a decrease of general performance. The present study is designed to prove efficacy of the anti-gravity treadmill (alter G®) compared to a standard rehabilitation protocol in patients with tibial plateau (group 1)or ankle fractures (group 2) with six weeks of partial weight bearing of 20 kg. This prospective randomized study will include a total of 60 patients for each group according to ...
Tópico(s): Lower Extremity Biomechanics and Pathologies
2017 - BioMed Central | BMC Musculoskeletal Disorders
Hanno Steinke, Niels Hammer, Uwe Lingslebe, Andreas Höch, Thomas Klink, Jörg Böhme,
Pelvic ring stability is maintained passively by both the osseous and the ligamentous apparatus. Therapeutic approaches focus mainly on fracture patterns, so ligaments are often neglected. When they rupture along with the bone after pelvic ring fractures, disrupting stability, ligaments need to be considered during reconstruction and rehabilitation. Our aim was to determine the influence of ligaments on open-book injury using two experimental models with body donors. Mechanisms of bone avulsion ...
Tópico(s): Hip disorders and treatments
2014 - Wiley | Clinical Anatomy
Jörg Hohe, Carla Beckmann, Wolfgang Böhme, Jörg Weise, M. Reinfried, Fabian Luthardt, Florian Rapp, Jan Diemert,
Hybrid foams are composite materials consisting of two foamed constitutive materials. Compared to conventional mono material foams, hybrid foams have the advantage that their material properties can be adapted more easily to comply with any kinds of prescribed requirements deriving from the intended structural application. The present study is concerned with a survey of the mechanical properties of a variety of hybrid foams with both, interpenetrating and particulate microstructures. As constituent ...
Tópico(s): Polymer composites and self-healing
2019 - Elsevier BV | Mechanics of Materials
Ralf Henkelmann, Lisa Palke, Sebastian Schneider, Daniel Müller, Bernhard Karich, Meinhard Mende, Christoph Josten, Jörg Böhme,
Objective: To compare the effects of anti-gravity treadmill rehabilitation with those of standard rehabilitation on surgically treated ankle and tibial plateau fractures. Design: Open-label prospective randomized multicenter study. Setting: Three level 1 trauma centers. Subjects: Patients with tibial plateau or ankle fractures who underwent postoperative partial weight-bearing were randomized into the intervention (anti-gravity treadmill use) or control (standard rehabilitation protocol) groups. Main ...
Tópico(s): Musculoskeletal pain and rehabilitation
2020 - SAGE Publishing | Clinical Rehabilitation
Sascha Kurz, Philipp Pieroh, Maximilian Lenk, Christoph Josten, Jörg Böhme,
Rationale: Pelvic malunion is a rare complication and is technically challenging to correct owing to the complex three-dimensional (3D) geometry of the pelvic girdle. Hence, precise preoperative planning is required to ensure appropriate correction. Reconstructive surgery is generally a 2- or 3-stage procedure, with transiliac osteotomy serving as an alternative to address limb length discrepancy. Patient concerns: A 38-year-old female patient with a Mears type IV pelvic malunion with previous failed ...
Tópico(s): Bone fractures and treatments
2017 - Wolters Kluwer | Medicine
A. Tiemann, Jörg Böhme, Christoph Josten,
Tópico(s): Abdominal Trauma and Injuries
2005 - Springer Science+Business Media | European Journal of Trauma
J Bourke, Torsten Ohst, Yvonne Gräser, Wolfgang Böhme, Jörg Plötner,
DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials DAO 95:259-261 (2011) - DOI: https://doi.org/10.3354/dao02369 NOTE New records of Batrachochytrium dendrobatidis in Chilean frogs J. Bourke1,*, T. Ohst2,3, Y. Gräser3, W. Böhme1, J. Plötner2 1Zoologisches Forschungsmuseum Alexander Koenig, Adenauerallee 160, 53113 Bonn, Germany 2Museum für Naturkunde, Leibniz-Institut für ...
Tópico(s): Animal and Plant Science Education
2011 - Inter-Research | Diseases of Aquatic Organisms
Florian Bitto, Konstantin Kraushaar, Uwe Böhme, Erica Brendler, Jörg Wagler, Edwin Kroke,
Abstract The multinuclear silicon complexes [{H 2 ClSi(μ‐pz*) 2 } 2 SiH 2 ] ( 1 ) and [Cl 2 Si(μ‐pz RR ) 2 SiCl 2 ] ( 2 , R = Me; 3 , R = Ph) were formed by the reaction of dichlorosilane (for 1 ) or hexachlorodisilane with 1‐trimethylsilyl‐3,5‐dimethylpyrazole (for 1 and 2 ) and the 3,5‐diphenyl analogue (for 3 ). The reaction of trichlorosilane with 3,5‐dimethylpyrazole (Hpz*) in MeCN resulted in the formation of two MeCN insertion products of 2 ( 4 , 5 ). From different samples of synthesis products of this work a preferred hydrolysis ...
Tópico(s): Silicone and Siloxane Chemistry
2013 - Wiley | European Journal of Inorganic Chemistry
Silvia Perea, Madelaine Böhme, Primož Zupančić, Jörg Freyhof, Radek Šanda, Müfit Özuluğ, Asghar Abdoli, Ignacio Doadrio,
Leuciscinae is a subfamily belonging to the Cyprinidae fish family that is widely distributed in Circum-Mediterranean region. Many efforts have been carried out to deciphering the evolutionary history of this group. Thus, different biogeographical scenarios have tried to explain the colonization of Europe and Mediterranean area by cyprinids, such as the "north dispersal" or the "Lago Mare dispersal" models. Most recently, Pleistocene glaciations influenced the distribution of leuciscins, especially ...
Tópico(s): Genetic diversity and population structure
2010 - Springer Science+Business Media | BMC Evolutionary Biology
Lisa Palke, Sebastian Schneider, Bernhard Karich, Meinhard Mende, Christoph Josten, Jörg Böhme, Ralf Henkelmann,
Objective: To compare the one-year postoperative outcomes of anti-gravity treadmill rehabilitation with those of standard rehabilitation in patients with ankle or tibial plateau fractures. Design: An open-label prospective randomised study. Setting: Three trauma centres. Subjects: Patients were randomised into the intervention (anti-gravity treadmill) or control (standard protocol) rehabilitation group. Main measures: The primary endpoint was changes in the Foot and Ankle Outcome Score for ankle fractures ...
Tópico(s): Total Knee Arthroplasty Outcomes
2021 - SAGE Publishing | Clinical Rehabilitation