TY - CHAP
A1 - Kahmann, Stephanie
A1 - Hackl, Michael
A1 - Wegmann, Kilian
A1 - Müller, Lars-Peter
A1 - Staat, Manfred
ED - Erni, Daniel
T1 - Impact of a proximal radial shortening osteotomy on the distribution of forces and the stability of the elbow
T2 - 1st YRA MedTech Symposium 2016 : April 8th / 2016 / University of Duisburg-Essen
N2 - The human arm consists of the humerus (upper arm), the medial ulna and the lateral radius (forearm). The joint between the humerus and the ulna is called humeroulnar joint and the joint between the humerus and the radius is called humeroradial joint. Lateral and medial collateral ligaments stabilize the elbow. Statistically, 2.5 out of 10,000 people suffer from radial head fractures [1]. In these fractures the cartilage is often affected. Caused by the injured cartilage, degenerative diseases like posttraumatic arthrosis may occur. The resulting pain and reduced range of motion have an impact on the patient’s quality of life. Until now, there has not been a treatment which allows typical loads in daily life activities and offers good long-term results. A new surgical approach was developed with the motivation to reduce the progress of the posttraumatic arthrosis. Here, the radius is shortened by 3 mm in the proximal part [2]. By this means, the load of the radius is intended to be reduced due to a load shift to the ulna. Since the radius is the most important stabilizer of the elbow it has to be confirmed that the stability is not affected. In the first test (Fig. 1 left), pressure distributions within the humeroulnar and humeroradial joints a native and a shortened radius were measured using resistive pressure sensors (I5076 and I5027, Tekscan, USA). The humerus was loaded axially in a tension testing machine (Z010, Zwick Roell, Germany) in 50 N steps up to 400 N. From the humerus the load is transmitted through both the radius and the ulna into the hand which is fixed on the ground. In the second test (Fig. 1 right), the joint stability was investigated using a digital image correlation system to measure the displacement of the ulna. Here, the humerus is fixed with a desired flexion angle and the unconstrained forearm lies on the ground. A rope connects the load actuator with a hook fixed in the ulna. A guide roller is used so that the rope pulls the ulna horizontally when a tensile load is applied. This creates a moment about the elbow joint with a maximum value of 7.5 Nm. Measurements were performed with varying flexion angles (0°, 30°, 60°, 90°, 120°). For both tests and each measurement, seven specimens were used. Student ́s t-test was employed to determine whether the mean values of the measurements in native specimen and operated specimens differ significantly.
Y1 - 2016
U6 - https://doi.org/10.17185/duepublico/40821
SP - 7
EP - 8
PB - Universität Duisburg-Essen
CY - Duisburg
ER -
TY - JOUR
A1 - Jung, Alexander
A1 - Staat, Manfred
A1 - Müller, Wolfram
T1 - Corrigendum to “Flight style optimization in ski jumping on normal, large, and ski flying hills” [J. Biomech 47 (2014) 716–722]
JF - Journals of Biomechanics
Y1 - 2018
U6 - https://doi.org/10.1016/j.jbiomech.2018.02.001
SN - 0021-9290
N1 - refers to
Journal of Biomechanics Vol 47, Issue 3, Pages 716-722:
https://doi.org/10.1016/j.jbiomech.2013.11.021
SP - 313
PB - Elsevier
CY - Amsterdam
ER -
TY - JOUR
A1 - Jung, Alexander
A1 - Staat, Manfred
A1 - Müller, Wolfram
T1 - Flight style optimization in ski jumping on normal, large, and ski flying hills
JF - Journal of biomechanics
Y1 - 2013
SN - 1873-2380 (E-Journal); 0021-9290 (Print)
N1 - Corrigendum to “Flight style optimization in ski jumping on normal, large, and ski flying hills” [J. Biomech 47 (2014) 716-722] Journal of Biomechanics, 2018;71:313.
VL - Vol. 47
IS - Iss. 3
SP - 716
EP - 722
PB - Elsevier
CY - Amsterdam
ER -
TY - CHAP
A1 - Jung, Alexander
A1 - Staat, Manfred
A1 - Müller, Wolfram
ED - Onate, E.
T1 - Optimization of the flight style in ski jumping
T2 - 11th World Congress on Computational Mechanics (WCCM XI) ; 5th European Conference on Computational Mechanics (ECCM V) ; 6th European Conference on Computational Fluid Dynamics (ECFD VI) ; July 20 - 25, 2014, Barcelona
Y1 - 2014
N1 - Das Paper wurde nach der Konferenz überarbeitet.
SP - 799
EP - 810
ER -
TY - CHAP
A1 - Jung, Alexander
A1 - Staat, Manfred
A1 - Müller, Wolfram
T1 - Effect of wind on flight style optimisation in ski jumping
T2 - 15th International Symposium on Computer Simulation in Biomechanics ; July 9th-11th 2015, Edinburgh, UK
Y1 - 2016
SP - 53
EP - 54
PB - The University of Edinburgh ; Loughborough University
CY - Edinburgh
ER -
TY - JOUR
A1 - Jung, Alexander
A1 - Staat, Manfred
T1 - Erratum to "Modeling and simulation of human induced pluripotent stem cell-derived cardiac tissue" [GAMM-Mitteilungen, (2019), 42, 4, 10.1002/gamm.201900002]
JF - GAMM-Mitteilungen
Y1 - 2020
U6 - https://doi.org/10.1002/gamm.202000011
SN - 1522-2608
N1 - Refers to: Modeling and simulation of human induced pluripotent stem cell-derived cardiac tissue. Alexander Jung, Manfred Staat.
Volume 42, Issue 4. GAMM-Mitteilungen, 2019. https://doi.org/10.1002/gamm.201900002
VL - 43
IS - 4
PB - Wiley-VCH GmbH
CY - Weinheim
ER -
TY - CHAP
A1 - Jung, Alexander
A1 - Staat, Manfred
ED - Erni, Daniel
T1 - Computing olympic gold: Ski jumping as an example
T2 - 1st YRA MedTech Symposium 2016 : April 8th / 2016 / University of Duisburg-Essen
Y1 - 2016
SN - 978-3-940402-06-6
U6 - https://doi.org/10.17185/duepublico/40821
SP - 54
EP - 55
PB - Universität Duisburg-Essen
CY - Duisburg
ER -
TY - JOUR
A1 - Jung, Alexander
A1 - Staat, Manfred
T1 - Modeling and simulation of human induced pluripotent stem cell-derived cardiac tissue
JF - GAMM - Mitteilungen der Gesellschaft für Angewandte Mathematik und Mechanik
Y1 - 2019
U6 - https://doi.org/10.1002/gamm.201900002
SN - 1522-2608
VL - 42
IS - 4
PB - Wiley
CY - Weinheim
ER -
TY - JOUR
A1 - Jung, Alexander
A1 - Müller, Wolfram
A1 - Staat, Manfred
T1 - Wind and fairness in ski jumping: A computer modelling analysis
JF - Journal of Biomechanics
N2 - Wind is closely associated with the discussion of fairness in ski jumping. To counter-act its influence on the jump length, the International Ski Federation (FIS) has introduced a wind compensation approach. We applied three differently accurate computer models of the flight phase with wind (M1, M2, and M3) to study the jump length effects of various wind scenarios. The previously used model M1 is accurate for wind blowing in direction of the flight path, but inaccuracies are to be expected for wind directions deviating from the tangent to the flight path. M2 considers the change of airflow direction, but it does not consider the associated change in the angle of attack of the skis which additionally modifies drag and lift area time functions. M3 predicts the length effect for all wind directions within the plane of the flight trajectory without any mathematical simplification. Prediction errors of M3 are determined only by the quality of the input data: wind velocity, drag and lift area functions, take-off velocity, and weight. For comparing the three models, drag and lift area functions of an optimized reference jump were used. Results obtained with M2, which is much easier to handle than M3, did not deviate noticeably when compared to predictions of the reference model M3. Therefore, we suggest to use M2 in future applications. A comparison of M2 predictions with the FIS wind compensation system showed substantial discrepancies, for instance: in the first flight phase, tailwind can increase jump length, and headwind can decrease it; this is opposite of what had been anticipated before and is not considered in the current wind compensation system in ski jumping.
Y1 - 2018
U6 - https://doi.org/10.1016/j.jbiomech.2018.05.001
SN - 0021-9290
IS - 75
SP - 147
EP - 153
PB - Elsevier
CY - Amsterdam
ER -
TY - GEN
A1 - Jung, Alexander
A1 - Müller, Wolfram
A1 - Staat, Manfred
T1 - Corrigendum to “Wind and fairness in ski jumping: A computer modelling analysis” [J. Biomech. 75 (2018) 147–153]
T2 - Journal of Biomechanics
Y1 - 2021
U6 - https://doi.org/10.1016/j.jbiomech.2021.110690
SN - 0021-9290
N1 - Refers to: Alexander Jung, Wolfram Müller, Manfred Staat: Wind and fairness in ski jumping: A computer modelling analysis. Journal of Biomechanics, Volume 75. 25 June 2018. Pages 147-153. https://doi.org/10.1016/j.jbiomech.2018.05.001
VL - 128
IS - Article number: 110690
PB - Elsevier
CY - Amsterdam
ER -
TY - JOUR
A1 - Jung, Alexander
A1 - Müller, Wolfram
A1 - Staat, Manfred
T1 - Optimization of the flight technique in ski jumping: the influence of wind
Y1 - 2019
U6 - https://doi.org/10.1016/j.jbiomech.2019.03.023
IS - Early view
PB - Elsevier
CY - Amsterdam
ER -
TY - CHAP
A1 - Jung, Alexander
A1 - Frotscher, Ralf
A1 - Staat, Manfred
T1 - Electromechanical model of hiPSC-derived ventricular cardiomyocytes cocultured with fibroblasts
T2 - 6th European Conference on Computational Mechanics (ECCM 6), 7th European Conference on Computational Fluid Dynamics (ECFD 7), 11-15 June 2018, Glasgow, UK
N2 - The CellDrum provides an experimental setup to study the mechanical effects of fibroblasts co-cultured with hiPSC-derived ventricular cardiomyocytes. Multi-scale computational models based on the Finite Element Method are developed. Coupled electrical cardiomyocyte-fibroblast models (cell level) are embedded into reaction-diffusion equations (tissue level) which compute the propagation of the action potential in the cardiac tissue. Electromechanical coupling is realised by an excitation-contraction model (cell level) and the active stress arising during contraction is added to the passive stress in the force balance, which determines the tissue displacement (tissue level). Tissue parameters in the model can be identified experimentally to the specific sample.
Y1 - 2018
ER -
TY - THES
A1 - Jung, Alexander
T1 - Electromechanical modelling and simulation of hiPSC-derived cardiac cell cultures
Y1 - 2021
U6 - http://nbn-resolving.de/urn/resolver.pl?https://nbn-resolving.org/urn:nbn:de:hbz:464-20210624-134942-7
SN - 978-3-9821811-1-0
N1 - Dissertation, Universität Duisburg-Essen, 2021
PB - Universität Duisburg-Essen
ER -
TY - JOUR
A1 - Jossek, Ralf
A1 - Bongaerts, Johannes
A1 - Sprenger, Georg A.
T1 - Characterization of a new feedback-resistant 3-deoxy-D-arabinoheptulosonate 7-phosphate synthase AroF of Escherichia coli
JF - FEMS microbiology letters
Y1 - 2001
SN - 1574-6968
VL - Vol. 202
IS - Iss. 1
SP - 145
EP - 148
ER -
TY - JOUR
A1 - Jordan, Sabine D.
A1 - Krüger, Markus
A1 - Willmes, Diana M.
A1 - Redemann, Nora
A1 - Wunderlich, F. Thomas
A1 - Brönneke, Hella S.
A1 - Merkwirth, Carsten
A1 - Kashkar, Hamid
A1 - Olkkonen, Vesa M.
A1 - Böttger, Thomas
A1 - Braun, Thomas
A1 - Seibler, Jost
A1 - Brüning, Jens C.
T1 - Obesity-induced overexpression of miRNA-143 inhibits insulin-stimulated AKT activation and impairs glucose metabolism
JF - Nature Cell Biology
N2 - The contribution of altered post-transcriptional gene silencing to the development of insulin resistance and type 2 diabetes mellitus so far remains elusive. Here, we demonstrate that expression of microRNA (miR)-143 and 145 is upregulated in the liver of genetic and dietary mouse models of obesity. Induced transgenic overexpression of miR-143, but not miR-145, impairs insulin-stimulated AKT activation and glucose homeostasis. Conversely, mice deficient for the miR-143–145 cluster are protected from the development of obesity-associated insulin resistance. Quantitative-mass-spectrometry-based analysis of hepatic protein expression in miR-143-overexpressing mice revealed miR-143-dependent downregulation of oxysterol-binding-protein-related protein (ORP) 8. Reduced ORP8 expression in cultured liver cells impairs the ability of insulin to induce AKT activation, revealing an ORP8-dependent mechanism of AKT regulation. Our experiments provide direct evidence that dysregulated post-transcriptional gene silencing contributes to the development of obesity-induced insulin resistance, and characterize the miR-143–ORP8 pathway as a potential target for the treatment of obesity-associated diabetes.
Y1 - 2011
U6 - https://doi.org/10.1038/ncb2211
SN - 1465-7392
VL - 13
IS - 4
SP - 434
EP - 446
PB - Nature
CY - New York
ER -
TY - CHAP
A1 - Jockwer, R.
A1 - Kleiber, M.
A1 - Uibel, Thomas
ED - Görlacher, Rainer
T1 - Criteria for Evaluating the Simplification of Design Rules for Dowel-type Fasteners
T2 - International Network on Timber Engineering Research, INTER : proceedings, meeting 51, 10 - 13 August 2016, Tallinn, Estonia
Y1 - 2018
SP - 461
EP - 466
PB - Timber Scientific Publishing, KIT Holzbau und Baukonstruktionen
CY - Karlsruhe
ER -
TY - JOUR
A1 - Jochim, Haldor E.
T1 - Charging rail operators for delays – how not to do it
JF - Networks for mobility : International Symposium, September 18 - 20, 2002, Stuttgart, Germany ; proceedings / University of Stuttgart, Centre of Transporation Research (FOVUS). W. Möhlenbrink ... (eds.)
Y1 - 2002
SN - 3893010858
N1 - International Symposium ; (2002.09.18-20 : ; Stuttgart)
PB - FOVUS
CY - Stuttgart
ER -
TY - JOUR
A1 - Jochim, Haldor E.
T1 - A traffic resistance model of long-distance travel
JF - Networks for mobility : 2nd international symposium, September 29 - October 1, 2004, Stuttgart, Germany ; proceedings ; abstracts and CD-ROM / [2nd International Symposium on Networks for Mobility]. FOVUS, Centre of Transportation Research, University of
Y1 - 2004
SN - 3-89301-180-3
N1 - International Symposium on Networks for Mobility (2, 2004, Stuttgart)
PB - FOVUS
CY - Stuttgart
ER -
TY - JOUR
A1 - Jiminez German, Salvador
A1 - Behbahani, Mehdi
A1 - Miettinen, Susanna
A1 - Grijpma, Dirk W.
A1 - Haimi, Suvi P.
T1 - Proliferation and differentiation of adipose stem cells towards smooth muscle cells on poly(trimethylene carbonate) membranes
JF - Macromolecular symposia
Y1 - 2013
SN - 0258-0322
VL - Vol. 334
IS - Iss. 1
SP - 133
EP - 142
PB - Wiley
CY - Weinheim
ER -
TY - JOUR
A1 - Jildeh, Zaid B.
A1 - Wagner, Torsten
A1 - Schöning, Michael Josef
A1 - Pieper, Martin
T1 - Simulating the electromagnetic‐thermal treatment of thin aluminium layers for adhesion improvement
JF - Physica status solidi (a)
N2 - A composite layer material used in packaging industry is made from joining layers of different materials using an adhesive. An important processing step in the production of aluminium-containing composites is the surface treatment and consequent coating of adhesive material on the aluminium surface. To increase adhesion strength between aluminium layer and the adhesive material, the foil is heat treated. For efficient heating, induction heating was considered as state-of-the-art treatment process. Due to the complexity of the heating process and the unpredictable nature of the heating source, the control of the process is not yet optimised. In this work, a finite element analysis of the process was established and various process parameters were studied. The process was simplified and modelled in 3D. The numerical model contains an air domain, an aluminium layer and a copper coil fitted with a magnetic field concentrating material. The effect of changing the speed of the aluminium foil (or rolling speed) was studied with the change of the coil current. Statistical analysis was used for generating a general control equation of coil current with changing rolling speed.
Y1 - 2015
U6 - https://doi.org/10.1002/pssa.201431893
SN - 1862-6319
VL - Vol. 212
IS - 6
SP - 1234
EP - 1241
PB - Wiley
CY - Weinheim
ER -
TY - JOUR
A1 - Jildeh, Zaid B.
A1 - Wagner, Patrick H.
A1 - Schöning, Michael Josef
T1 - Sterilization of Objects, Products, and Packaging Surfaces and Their Characterization in Different Fields of Industry: The Status in 2020
JF - physica status solidi (a) applications and materials science
N2 - The treatment method to deactivate viable microorganisms from objects or products is termed sterilization. There are multiple forms of sterilization, each intended to be applied for a specific target, which depends on—but not limited to—the thermal, physical, and chemical stability of that target. Herein, an overview on the currently used sterilization processes in the global market is provided. Different sterilization techniques are grouped under a category that describes the method of treatment: radiation (gamma, electron beam, X-ray, and ultraviolet), thermal (dry and moist heat), and chemical (ethylene oxide, ozone, chlorine dioxide, and hydrogen peroxide). For each sterilization process, the typical process parameters as defined by regulations and the mode of antimicrobial activity are summarized. Finally, the recommended microorganisms that are used as biological indicators to validate sterilization processes in accordance with the rules that are established by various regulatory agencies are summarized.
KW - bioburdens
KW - sterility tests
KW - sterilization efficacy
KW - sterilization methods
KW - validation methods
Y1 - 2021
U6 - https://doi.org/10.1002/pssa.202000732
SN - 1862-6319
N1 - Corresponding author: Michael J. Schöning
VL - 218
IS - 13
PB - Wiley-VCH
CY - Weinheim
ER -
TY - JOUR
A1 - Jildeh, Zaid B.
A1 - Oberländer, Jan
A1 - Kirchner, Patrick
A1 - Wagner, Patrick H.
A1 - Schöning, Michael Josef
T1 - Thermocatalytic Behavior of Manganese (IV) Oxide as Nanoporous Material on the Dissociation of a Gas Mixture Containing Hydrogen Peroxide
JF - Nanomaterials
N2 - In this article, we present an overview on the thermocatalytic reaction of hydrogen peroxide (H₂O₂) gas on a manganese (IV) oxide (MnO₂) catalytic structure. The principle of operation and manufacturing techniques are introduced for a calorimetric H₂O₂ gas sensor based on porous MnO₂. Results from surface analyses by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) of the catalytic material provide indication of the H₂O₂ dissociation reaction schemes. The correlation between theory and the experiments is documented in numerical models of the catalytic reaction. The aim of the numerical models is to provide further information on the reaction kinetics and performance enhancement of the porous MnO₂ catalyst.
Y1 - 2018
U6 - https://doi.org/10.3390/nano8040262
SN - 2079-4991
VL - 8
IS - 4
PB - MDPI
CY - Basel
ER -
TY - JOUR
A1 - Jildeh, Zaid B.
A1 - Oberländer, Jan
A1 - Kirchner, Patrick
A1 - Keusgen, Michael
A1 - Wagner, Patrick H.
A1 - Schöning, Michael Josef
T1 - Experimental and Numerical Analyzes of a Sensor Based on Interdigitated Electrodes for Studying Microbiological Alterations
JF - physica status solidi (a): applications and materials science
N2 - In this work, a cell-based biosensor to evaluate the sterilization efficacy of hydrogen peroxide vapor sterilization processes is characterized. The transducer of the biosensor is based on interdigitated gold electrodes fabricated on an inert glass substrate. Impedance spectroscopy is applied to evaluate the sensor behavior and the alteration of test microorganisms due to the sterilization process. These alterations are related to changes in relative permittivity and electrical conductivity of the bacterial spores. Sensor measurements are conducted with and without bacterial spores (Bacillus atrophaeus), as well as after an industrial sterilization protocol. Equivalent two-dimensional numerical models based on finite element method of the periodic finger structures of the interdigitated gold electrodes are designed and validated using COMSOL® Multiphysics software by the application of known dielectric properties. The validated models are used to compute the electrical properties at different sensor states (blank, loaded with spores, and after sterilization). As a final result, we will derive and tabulate the frequency-dependent electrical parameters of the spore layer using a novel model that combines experimental data with numerical optimization techniques.
Y1 - 2018
U6 - https://doi.org/10.1002/pssa.201700920
SN - 1862-6319
VL - 215
IS - 15
PB - Wiley-VCH
CY - Weinheim
ER -
TY - JOUR
A1 - Jildeh, Zaid B.
A1 - Kirchner, Patrick
A1 - Oberländer, Jan
A1 - Vahidpour, Farnoosh
A1 - Wagner, Patrick H.
A1 - Schöning, Michael Josef
T1 - Development of a package-sterilization process for aseptic filling machines: A numerical approach and validation for surface treatment with hydrogen peroxide
JF - Sensor and Actuators A: Physical
N2 - Within the present work a sterilization process by a heated gas mixture that contains hydrogen peroxide (H₂O₂) is validated by experiments and numerical modeling techniques. The operational parameters that affect the sterilization efficacy are described alongside the two modes of sterilization: gaseous and condensed H₂O₂. Measurements with a previously developed H₂O₂ gas sensor are carried out to validate the applied H₂O₂ gas concentration during sterilization. We performed microbiological tests at different H₂O₂ gas concentrations by applying an end-point method to carrier strips, which contain different inoculation loads of Geobacillus stearothermophilus spores. The analysis of the sterilization process of a pharmaceutical glass vial is performed by numerical modeling. The numerical model combines heat- and advection-diffusion mass transfer with vapor–pressure equations to predict the location of condensate formation and the concentration of H₂O₂ at the packaging surfaces by changing the gas temperature. For a sterilization process of 0.7 s, a H₂O₂ gas concentration above 4% v/v is required to reach a log-count reduction above six. The numerical results showed the location of H₂O₂ condensate formation, which decreases with increasing sterilant-gas temperature. The model can be transferred to different gas nozzle- and packaging geometries to assure the absence of H₂O₂ residues.
Y1 - 2020
U6 - https://doi.org/10.1016/j.sna.2019.111691
SN - 0924-4247
VL - 303
IS - 111691
PB - Elsevier
CY - Amsterdam
ER -
TY - JOUR
A1 - Jildeh, Zaid B.
A1 - Kirchner, Patrick
A1 - Oberländer, Jan
A1 - Kremers, Alexander
A1 - Wagner, Torsten
A1 - Wagner, Patrick H.
A1 - Schöning, Michael Josef
T1 - FEM-based modeling of a calorimetric gas sensor for hydrogen peroxide monitoring
JF - physica status solidi a : applications and materials sciences
N2 - A physically coupled finite element method (FEM) model is developed to study the response behavior of a calorimetric gas sensor. The modeled sensor serves as a monitoring device of the concentration of gaseous hydrogen peroxide (H2 O2) in a high temperature mixture stream in aseptic sterilization processes. The principle of operation of a calorimetric H2 O2 sensor is analyzed and the results of the numerical model have been validated by using previously published sensor experiments. The deviation in the results between the FEM model and experimental data are presented and discussed.
Y1 - 2017
U6 - https://doi.org/10.1002/pssa.201600912
SN - 1862-6319
IS - Early View
PB - Wiley-VCH
CY - Weinheim
ER -
TY - JOUR
A1 - Jildeh, Zaid B.
A1 - Kirchner, Patrick
A1 - Baltes, Klaus
A1 - Wagner, Patrick H.
A1 - Schöning, Michael Josef
T1 - Development of an in-line evaporation unit for the production of gas mixtures containing hydrogen peroxide – numerical modeling and experimental results
JF - International Journal of Heat and Mass Transfer
N2 - Hydrogen peroxide (H2O2) is a typical surface sterilization agent for packaging materials used in the pharmaceutical, food and beverage industries. We use the finite-elements method to analyze the conceptual design of an in-line thermal evaporation unit to produce a heated gas mixture of air and evaporated H2O2 solution. For the numerical model, the required phase-transition variables of pure H2O2 solution and of the aerosol mixture are acquired from vapor-liquid equilibrium (VLE) diagrams derived from vapor-pressure formulations. This work combines homogeneous single-phase turbulent flow with heat-transfer physics to describe the operation of the evaporation unit. We introduce the apparent heat-capacity concept to approximate the non-isothermal phase-transition process of the H2O2-containing aerosol. Empirical and analytical functions are defined to represent the temperature- and pressure-dependent material properties of the aqueous H2O2 solution, the aerosol and the gas mixture. To validate the numerical model, the simulation results are compared to experimental data on the heating power required to produce the gas mixture. This shows good agreement with the deviations below 10%. Experimental observations on the formation of deposits due to the evaporation of stabilized H2O2 solution fits the prediction made from simulation results.
Y1 - 2019
U6 - https://doi.org/10.1016/j.ijheatmasstransfer.2019.118519
SN - 0017-9310
VL - 143
PB - Elsevier
CY - Amsterdam
ER -
TY - JOUR
A1 - Jeromin, Günter Erich
A1 - Zoor, Annegreth
T1 - A new irreversible enzyme-aided esterification method in organic solvents
JF - Biotechnology letters. 30 (2008), H. 5
Y1 - 2008
SN - 1573-6776
SP - 925
EP - 928
ER -
TY - JOUR
A1 - Jeromin, Günter Erich
A1 - Welsch, Volker
T1 - Diketene a New Esterification Reagent in the Enzyme-Aided Synthesis of Chiral Alcohols and Chiral Acetoacetic Acid Esters
JF - Tetrahedron Letters . 36 (1995), H. 37
Y1 - 1995
SN - 0040-4039
N1 - ISSN der E-Ausg.: 1359-8562
SP - 6663
EP - 6664
ER -
TY - JOUR
A1 - Jeromin, Günter Erich
A1 - Scheidt, Annette
T1 - Aliphatic optically active alcohols by enzyme-aided synthesis
JF - Tetrahedron Letters . 32 (1991), H. 48
Y1 - 1991
SN - 0040-4039
N1 - ISSN der E-Ausg.: 1359-8562
SP - 7021
EP - 7024
ER -
TY - JOUR
A1 - Jeromin, Günter Erich
A1 - Albertz, Michael
T1 - Optically active α-acetoxycarboxylic acids and α-hydroxycarboxylic acids by enzyme-aided syntheses
JF - Journal für Praktische Chemie / Chemiker-Zeitung. 334 (1992), H. 6
Y1 - 1992
SN - 1436-9966
N1 - ISSN der E-Ausg.: 1521-3897 ; In der Bibliothek (Jülich) vorhanden unter 63 ZS 024-1992
SP - 526
EP - 528
ER -
TY - JOUR
A1 - Jeromin, Günter Erich
T1 - Superabsorbed alcohol dehydrogenase—a new catalyst for asymmetric reductions
JF - Biotechnology Letters. 31 (2009), H. 11
Y1 - 2009
SN - 0141-5492
SP - 1717
EP - 1721
ER -
TY - JOUR
A1 - Jeromin, Günter Erich
T1 - Tetrabenzo[a,c,h,j]phenoxazine-18-yl a new stable neutral radical
JF - Tetrahedron Letters . 42 (2001), H. 10
Y1 - 2001
SN - 0040-4039
N1 - ISSN der E-Ausg.: 1359-8562
SP - 1863
EP - 1865
ER -
TY - JOUR
A1 - Jens, Otto
A1 - Kaldenhoff, E.
A1 - Kirschner-Hermanns, R.
A1 - Mühl, Thomas
A1 - Klinge, Uwe
T1 - Elongation of textile pelvic floor implants under load is related to complete loss of effective porosity, thereby favoring incorporation in scar plates
JF - Journal of biomedical materials research. Part A
N2 - Use of textile structures for reinforcement of pelvic floor structures has to consider mechanical forces to the implant, which are quite different to the tension free conditions of the abdominal wall. Thus, biomechanical analysis of textile devices has to include the impact of strain on stretchability and effective porosity. Prolift® and Prolift + M®, developed for tension free conditions, were tested by measuring stretchability and effective porosity applying mechanical strain. For comparison, we used Dynamesh-PR4®, which was designed for pelvic floor repair to withstand mechanical strain. Prolift® at rest showed moderate porosity with little stretchability but complete loss of effective porosity at strain of 4.9 N/cm. Prolift + M® revealed an increased porosity at rest, but at strain showed high stretchability, with subsequent loss of effective porosity at strain of 2.5 N/cm. Dynamesh PR4® preserved its high porosity even under strain, but as consequence of limited stretchability. Though in tension free conditions Prolift® and Prolift + M® can be considered as large pore class I meshes, application of mechanical strain rapidly lead to collapse of pores. The loss of porosity at mechanical stress can be prevented by constructions with high structural stability. Assessment of porosity under strain was found helpful to define requirements for pelvic floor devices. Clinical studies have to prove whether devices with high porosity as well as high structural stability can improve the patients' outcome.
Y1 - 2014
U6 - https://doi.org/10.1002/jbm.a.34767
SN - 1552-4965
VL - 102
IS - 4
SP - 1079
EP - 1084
PB - Wiley
CY - New York
ER -
TY - CHAP
A1 - Jean-Pierre P., de Vera
A1 - Baque, Mickael
A1 - Billi, Daniela
A1 - Böttger, Ute
A1 - Bulat, Sergey
A1 - Czupalla, Markus
A1 - Dachwald, Bernd
A1 - de la Torre, Rosa
A1 - Elsaesser, Andreas
A1 - Foucher, Frédéric
A1 - Korsitzky, Hartmut
A1 - Kozyrovska, Natalia
A1 - Läufer, Andreas
A1 - Moeller, Ralf
A1 - Olsson-Francis, Karen
A1 - Onofri, Silvano
A1 - Sommer, Stefan
A1 - Wagner, Dirk
A1 - Westall, Frances
T1 - The search for life on Mars and in the Solar System - strategies, logistics and infrastructures
T2 - 69th International Astronautical Congress (IAC)
N2 - The question "Are we alone in the Universe?" is perhaps the most fundamental one that affects mankind. How can we address the search for life in our Solar System? Mars, Enceladus and Europa are the focus of the search for life outside the terrestrial biosphere. While it is more likely to find remnants of life (fossils of extinct life) on Mars because of its past short time window of the surface habitability, it is probably more likely to find traces of extant life on the icy moons and ocean worlds of Jupiter and Saturn. Nevertheless, even on Mars there could still be a chance to find extant life in niches near to the surface or in just discovered subglacial lakes beneath the South Pole ice cap. Here, the different approaches for the detection of traces of life in the form of biosignatures including pre-biotic molecules will be presented. We will outline the required infrastructure for this enterprise and give examples of future mission concepts to investigate the presence of life on other planets and moons. Finally, we will provide suggestions on methods, techniques, operations and strategies for preparation and realization of future life detection missions.
KW - life detection
KW - Mars
KW - icy moons
KW - habitability
KW - space missions
Y1 - 2018
N1 - 69th International Astronautical Congress (IAC), Bremen, Germany, 1-5 October 2018.
SP - 1
EP - 8
ER -
TY - JOUR
A1 - Jayaraman, Chandrasekaran
A1 - Mummidisetty, Chaitanya Krishna
A1 - Loesch, Alexandra
A1 - Kaur, Sandi
A1 - Hoppe-Ludwig, Shenan
A1 - Staat, Manfred
A1 - Jayaraman, Arun
T1 - Postural and metabolic benefits of using a forearm support walker in older adults with impairments
JF - Archives of Physical Medicine and Rehabilitation
Y1 - 2019
U6 - https://doi.org/10.1016/j.apmr.2018.10.001
SN - 0003-9993
VL - Volume 100
IS - Issue 4
SP - 638
EP - 647
PB - Elsevier
CY - Amsterdam
ER -
TY - CHAP
A1 - Jarke, Matthias
A1 - Gebhardt, Michael
A1 - Jacobs, Stephan
A1 - Nissen, Hans W.
T1 - Conflict analysis across heterogeneous viewpoints: formalization and visualization
T2 - Proceedings of the 29th Annual Hawaii International Conference on System Sciences
Y1 - 1996
SN - 0-8186-7324-9
U6 - https://doi.org/10.1109/HICSS.1996.493191
SP - 199
EP - 208
ER -
TY - BOOK
A1 - Janz, Norbert
A1 - Peters, Bettina
T1 - Innovation and Innovation Success in the German Manufacturing Sector. Econometric Evidence at Firm Level / Janz, N. and Peters, B.
Y1 - 2002
ER -
TY - JOUR
A1 - Janz, Norbert
A1 - Lööf, Hans
A1 - Peters, Bettina
T1 - Firm Level Innovation and Productivity, Is there a Common Story Across Countries?
JF - Problems and Perspectives in Management (2004)
Y1 - 2004
SN - ISSN 1727-7051
N1 - online download: http://businessperspectives.org/files/ppm/PPM_EN_2004_02_Janz.pdf
SP - 184
EP - 204
ER -
TY - BOOK
A1 - Janz, Norbert
A1 - Lööf, Hans
A1 - Peters, Bettina
T1 - Firm Level Innovation and Productivity, Is there a Common Story Across Countries?
Y1 - 2003
SN - ISSN 1727-7051
N1 - ZEW Diskussion Paper. No 03-26 Online : ftp://ftp.zew.de/pub/zew-docs/dp/dp0326.pdf
PB - Zentrum für Europäische Wirtschaftsforschung ZEW
CY - Mannheim
ER -
TY - BOOK
A1 - Janz, Norbert
A1 - Licht, Georg
A1 - Ebling, Günther
A1 - Niggemann, Hiltrud
T1 - Innovation in the Service Sector. Selected Facts and Some Policy Conclusions / Licht, G., G. Ebling, N. Janz, H. Niggemann
Y1 - 1999
PB - European Commission
CY - Luxembourg
ER -
TY - BOOK
A1 - Janz, Norbert
A1 - Licht, Georg
T1 - Innovation Activities and European Patenting of German Firms. A Panel Data Analysis / Janz, N., G. Licht
Y1 - 2002
ER -
TY - BOOK
A1 - Janz, Norbert
A1 - Gottschalk, Sandra
A1 - Hempell, Thomas
A1 - Peters, Bettina
T1 - Innovation Activities in the German Economy. Report on Indicators from the Innovation Survey 2000 (English translation) / Janz, N., S. Gottschalk, T. Hempell, B. Peters, G. Ebling und H. Niggemann
Y1 - 2002
PB - ZEW Zentrum für Europäische Wirtschaftsforschung
CY - Mannheim
ER -
TY - BOOK
A1 - Janz, Norbert
A1 - Gottschalk, Sandra
T1 - Innovation Dynamics and Endogenours Market Structue. An Econometric Investigation with Aggregated Innovation Survey Data / Gottschalk, S. und N. Janz
Y1 - 2001
N1 - ZEW-Discussion Paper 01-39 online unter ftp://ftp.zew.de/pub/zew-docs/dp/dp0139.pdf
PB - ZEW Zentrum für Europäische Wirtschaftsförderung
CY - Mannheim
ER -
TY - JOUR
A1 - Janz, Norbert
A1 - Goedhuys, Micheline
A1 - Mohnen, Pierre
T1 - What drives productivity in Tanzanian manufacturing firms: technology or business environment? / Goedhuys, Micheline ; Janz, Norbert ; Mohnen, Pierre
JF - The European Journal of Development Research. 20 (2008), H. 2
Y1 - 2008
SN - 1743-9728
SP - 199
EP - 218
ER -
TY - BOOK
A1 - Janz, Norbert
A1 - Goedhuys, Micheline
A1 - Mohnen, Pierre
T1 - Knowledge-based productivity in "low-tech" industries : evidence from firms in developing countries / Goedhuys, Micheline ; Janz, Norbert ; Mohnen, Pierre
Y1 - 2008
N1 - Working paper series // United Nations University, UNU-MERIT ; 2008,007
PB - UNU-MERIT
CY - Maastricht
ER -
TY - BOOK
A1 - Janz, Norbert
A1 - Goedhuys, Micheline
A1 - Mohnen, Pierre
T1 - What drives productivity in Tanzanian manufacturing firms: technology or institutions? / Goedhuys, Micheline ; Janz, Norbert ; Mohnen, Pierre
Y1 - 2006
N1 - Working paper series // United Nations University, UNU-MERIT ; 2006,037
PB - UnU-MERIT
CY - Maastricht
ER -
TY - JOUR
A1 - Janz, Norbert
A1 - Goedhuys, Micheline
A1 - Mairesse, Jacques
A1 - Mohnen, Pierre
T1 - Micro-evidence on innovation and development (MEIDE): an introduction / Goedhuys, Micheline ; Janz, Norbert ; Mairesse, Jacques ; Mohnen, Pierre
JF - The European Journal of Development Research. 20 (2008), H. 2
Y1 - 2008
SN - 1743-9728
SP - 167
EP - 171
ER -
TY - BOOK
A1 - Janz, Norbert
A1 - Ebling, Günther
A1 - Niggemann, Hiltrud
A1 - Stahl, Harald
T1 - 2nd Community Innovation Survey. 1st Interim Report. Report prepared for Eurostat / Ebling, G., N. Janz, H. Niggemann und H. Stahl
Y1 - 1998
PB - ZEW Zentrum für Europäische Wirtschaftsförderung
CY - Mannheim
ER -
TY - BOOK
A1 - Janz, Norbert
A1 - Ebling, Günther
A1 - Göggerle, J.
A1 - Licht, Georg
T1 - The Longitudinal Aspect of Innovation Surveys / G. Ebling, J. Göggerle, N. Janz, G. Licht und H. Stahl
Y1 - 1998
PB - ZEW Zentrum für Europäische Wirtschaftsförderung
CY - Mannheim
ER -
TY - BOOK
A1 - Janz, Norbert
A1 - Ebling, Günther
A1 - Gottschalk, Sandra
A1 - Peters, Bettina
T1 - Innovation Activities in the German Economy: Report on indicators from the Innovation Survey 2001 (english translation) / Janz, N., G. Ebling, S. Gottschalk, B. Peters und T. Schmidt
Y1 - 2002
PB - ZEW Zentrum für Europäische Wirtschaftsforschung
CY - Mannheim
ER -