3-D wind-induced effects on bridges during balanced cantilever erection stages

Schmidt, Stefan,Solari, Giovanni Techno-Press 2003 Wind and Structures, An International Journal (WAS Vol.6 No.1

Nowadays balanced cantilever construction plays an essential role as a sophisticated erection technique of bridges due to its economical and ecological advantages. Experience teaches that wind has a great importance with regard to this construction technique, but methods proposed by codes to take wind effects into account are still rather crude and, in most cases, completely lacking. Also research in this field is quite limited and aimed at studying only the longitudinal shear and the torque at the pier base, caused by the mean wind velocity and by the longitudinal turbulence actions over the deck. This paper advances the present solutions by developing a new procedure that takes into account all wind effects both on the deck and on the pier. The proposed model assumes the mean wind velocity as orthogonal to the bridge plane and considers the effects produced by all the three turbulence components and by the vortex shedding. The applications point out the role of each loading component on different bridge configurations and show that disregarding the presence of some effects may imply oversimplified results and relevant underestimations.

Impurity-mediated early charge density wave condensation in the oxygenadsorbed In/Si(111)-(4x1)/(8x2) nanowire array

Stefan WIPPERMANN,Andreas LUECKE,Samad RAZZAQ,Wolf Gero SCHMIDT,Deok Mahn OH,Han Woong YEOM 한국진공학회 2016 한국진공학회 학술발표회초록집 Vol.2016 No.8

EXPLORING EXPLICIT AND IMPLICIT FRAMING EFFECTS ON BRAND KNOWLEDGE ENHANCEMENT : THE CASE OF SUSTAINABILITY ADVERTISING USING ECOLABELS

Steffen Schmidt,Sascha Langner,Klaus-Peter Wiedmann,Janina Haase,Stefan Behrens 글로벌지식마케팅경영학회 2014 Global Marketing Conference Vol.2014 No.4

Although vast research has been done to better understand brand knowledge, few studies explore the conscious and the unconscious mental processes that increase brand equity when a brand is linked with value adding entities like persons, events or symbols. In our paper we introduce an integrated approach that includes both the explicit and implicit facets of customers’ brand knowledge and the leveraging effects when a brand is framed by another entity. In order to analyze brand knowledge enhancement effects in sufficient detail, we fall back on the multifaceted model of brand leverage by combining a brand with an external label. Our study results show that the combination of measuring implicit and explicit facets of brand knowledge is a better indicator to predict brand knowledge enhancement, and also that the analysis of subconscious processes help to better position the linked object in customers’ perception in order to foster the brand leveraging success.Although vast research has been done to better understand brand knowledge, few studies explore the conscious and the unconscious mental processes that increase brand equity when a brand is linked with value adding entities like persons, events or symbols. In our paper we introduce an integrated approach that includes both the explicit and implicit facets of customers’ brand knowledge and the leveraging effects when a brand is framed by another entity. In order to analyze brand knowledge enhancement effects in sufficient detail, we fall back on the multifaceted model of brand leverage by combining a brand with an external label. Our study results show that the combination of measuring implicit and explicit facets of brand knowledge is a better indicator to predict brand knowledge enhancement, and also that the analysis of subconscious processes help to better position the linked object in customers’ perception in order to foster the brand leveraging success.

EXPLORING EXPLICIT AND IMPLICIT FRAMING EFFECTS ON BRAND KNOWLEDGE ENHANCEMENT - THE CASE OF SUSTAINABILITY ADVERTISING USING ECOLABELS

Steffen Schmidt,Sascha Langner,Klaus-Peter Wiedmann,Janina Haase,Stefan Behrens 글로벌지식마케팅경영학회 2014 Global Marketing Conference Vol.2014 No.7

Although vast research has been done to better understand brand knowledge, few studies explore the conscious and the unconscious mental processes that increase brand equity when a brand is linked with value adding entities like persons, events or symbols. In our paper we introduce an integrated approach that includes both the explicit and implicit facets of customers’ brand knowledge and the leveraging effects when a brand is framed by another entity. In order to analyze brand knowledge enhancement effects in sufficient detail, we fall back on the multifaceted model of brand leverage by combining a brand with an external label. Our study results show that the combination of measuring implicit and explicit facets of brand knowledge is a better indicator to predict brand knowledge enhancement, and also that the analysis of subconscious processes help to better position the linked object in customers’ perception in order to foster the brand leveraging success.Although vast research has been done to better understand brand knowledge, few studies explore the conscious and the unconscious mental processes that increase brand equity when a brand is linked with value adding entities like persons, events or symbols. In our paper we introduce an integrated approach that includes both the explicit and implicit facets of customers’ brand knowledge and the leveraging effects when a brand is framed by another entity. In order to analyze brand knowledge enhancement effects in sufficient detail, we fall back on the multifaceted model of brand leverage by combining a brand with an external label. Our study results show that the combination of measuring implicit and explicit facets of brand knowledge is a better indicator to predict brand knowledge enhancement, and also that the analysis of subconscious processes help to better position the linked object in customers’ perception in order to foster the brand leveraging success.

Draft Genome of an AmpC-β-Lactamase Producing Serratia marcescens Isolate from Fresh farm Tomatoes in South Africa

Claussen Maike,Schmidt Stefan 한국미생물·생명공학회 2023 한국미생물·생명공학회지 Vol.51 No.3

Here we report essential features of the draft genome of an AmpC-β-lactamase-producing bacterial isolate obtained from farm tomatoes in South Africa. The isolate designated strain Tom1 featured a genome of 4950426 bp with a G+C% of 59.83. It was identified as Serratia marcescens by ribosomal multilocus sequence typing (rMLST), digital DNA-DNA hybridization (dDDH), average nucleotide identity (ANI), and phylogenetic analysis using reference genomes. Its genome encoded an AmpC-β-lactamase (blaSST-1), an efflux pump providing tetracycline resistance (tet(41)), and an aminoglycoside acetyltransferase (aac(6')-Ic). Additionally, genes encoding proteins involved in prodigiosin biosynthesis and associated with adherence, biofilm formation, virulence, and pathogenicity were detected.

Is The Biotransformation of Chlorinated Dibenzo-p-dioxins by Sphingomonas wittichii RW1 Governed by Thermodynamic Factors?

남인현,홍효봉,Stefan Schmidt 한국미생물학회 2014 The journal of microbiology Vol.52 No.9

Density functional theory (DFT) calculations were used toexplore the relationship between the biotransformation ofdibenzo-p-dioxin and selected chlorinated derivatives by restingcells of Sphingomonas wittichii RW1 and measuring thethermodynamic properties of the biotransformation substrates. Sphingomonas wittichii RW1 can aerobically catabolizedibenzo-p-dioxin as well as 2,7-dichloro-, 1,2,3-trichloro-,1,2,3,4-tetrachloro-, and 1,2,3,4,7,8-hexachlorodibenzo-pdioxin;however, neither the 2,3,7-trichloro- nor the 1,2,3,7,8-pentachlorodibenzo-p-dioxin was transformed to its correspondingmetabolic intermediate. The experimental biotransformationrates established were apparently governed by theselected thermodynamic properties of the substrates tested.

Sustainability in Manufacturing and Factories of the Future

Christoph Herrmann,Christopher Schmidt,Denis Kurle,Stefan Blume,Sebastian Thiede 한국정밀공학회 2014 International Journal of Precision Engineering and Vol.1 No.4

An increasing global demand for natural resources and the inherent challenges accompanying this demand pose a great task for manufacturing companies. Apart from this, new technologies and a demographic change of the workforce as well as the desire for new individualized products make manufacturing more challenging than ever. To succeed in this new setting manifold perspectives of a factory have been proposed in order to enhance the understanding of the complex interdependencies between the factory elements. Against this background, this paper starts with a short overview regarding the paradigm change in manufacturing including contemporary trends triggering the requirements for factories of the future. Subsequent to that, a selection of factory perspectives is revised indicating the demand for a new holistic perspective of a factory that is more suitable with respect to the new trends. For that reason a new holistic perspective on the factory of the future is presented.

Impurity-Mediated Early Condensation of a Charge Density Wave in an Atomic Wire Array

Yeom, Han Woong,Oh, Deok Mahn,Wippermann, Stefan,Schmidt, Wolf Gero American Chemical Society 2016 ACS NANO Vol.10 No.1

<P>We directly show how impurity atoms induce the condensation of a representative electronic phase, the charge density wave (CDW) phase, in atomic scale with scanning tunneling microscopy. Oxygen impurity atoms on the self-assembled metallic atomic wire array on a silicon crystal condense the CDW locally above the pristine transition temperature. More interestingly, the CDW along the wires is induced not by a single atomic impurity but by the cooperation of multiple impurities. First principles calculations disclose the mechanism of the cooperation as the coherent superposition of the local lattice strain induced by impurities, stressing the coupled electronic and lattice degrees of freedom for the CDW. This opens the possibility of the strain engineering over electronic phases of atomic-scale systems.</P>

COSMIC SHEAR RESULTS FROM THE DEEP LENS SURVEY. II. FULL COSMOLOGICAL PARAMETER CONSTRAINTS FROM TOMOGRAPHY

Jee, M. James,Tyson, J. Anthony,Hilbert, Stefan,Schneider, Michael D.,Schmidt, Samuel,Wittman, David American Astronomical Society 2016 The Astrophysical journal Vol.824 No.2

<P>We present a tomographic cosmic shear study from the Deep Lens Survey (DLS), which, providing a limiting magnitude r(lim) similar to 27 (5 sigma), is designed as a precursor Large Synoptic Survey Telescope (LSST) survey with an emphasis on depth. Using five tomographic redshift bins, we study their auto- and cross-correlations to constrain cosmological parameters. We use a luminosity-dependent nonlinear model to account for the astrophysical systematics originating from intrinsic alignments of galaxy shapes. We find that the cosmological leverage of the DLS is among the highest among existing > 10 deg(2) cosmic shear surveys. Combining the DLS tomography with the 9 yr results of the Wilkinson Microwave Anisotropy Probe (WMAP9) gives Omega(m) = 0.293(-0.014)(+0.012), sigma(8) = 0.833(-0.018)(+0.011), H-0 = 68.6(-1.2)(+1.4) km s(-1) Mpc(-1).4 1 1, and Omega(b) = 0.0475 +/- 0.0012 for Lambda CDM, reducing the uncertainties of the WMAP9-only constraints by similar to 50%. When we do not assume flatness for Lambda CDM, we obtain the curvature constraint Omega(k) = -0.010(-0.015)(+0.013) from the DLS+WMAP9 combination, which, however, is not well constrained when WMAP9 is used alone. The dark energy equation-of-state parameter w is tightly constrained when baryonic acoustic oscillation (BAO) data are added, yielding = - w -1.02(-0.09)(+0.10) with the DLS+WMAP9+BAO joint probe. The addition of supernova constraints further tightens the parameter to w = -1.03 +/- 0.03. Our joint constraints are fully consistent with the final Planck results and also with the predictions of a Lambda CDM universe.</P>

Functionalization of Ti-40Nb implant material with strontium by reactive sputtering

Markus Göttlicher,Marcus Rohnke,Yannik Moryson,Jürgen Thomas,Joachim Sann,Anja Lode,Matthias Schumacher,Romy Schmidt,Stefan Pilz,Annett Gebert,Thomas Gemming,Jürgen Janek 한국생체재료학회 2017 생체재료학회지 Vol.21 No.4

Background: Surface functionalization of orthopedic implants with pharmaceutically active agents is a modern approach to enhance osseointegration in systemically altered bone. A local release of strontium, a verified bone building therapeutic agent, at the fracture site would diminish side effects, which could occur otherwise by oral administration. Strontium surface functionalization of specially designed titanium-niobium (Ti-40Nb) implant alloy would provide an advanced implant system that is mechanically adapted to altered bone with the ability to stimulate bone formation. Methods: Strontium-containing coatings were prepared by reactive sputtering of strontium chloride (SrCl2) in a self-constructed capacitively coupled radio frequency (RF) plasma reactor. Film morphology, structure and composition were investigated by scanning electron microscopy (SEM), time of flight secondary ion mass spectrometry (ToF-SIMS) and X-ray photoelectron spectroscopy (XPS). High-resolution transmission electron microscopy (HR-TEM) was used for the investigation of thickness and growth direction of the product layer. TEM lamellae were prepared using the focused ion beam (FIB) technique. Bioactivity of the surface coatings was tested by cultivation of primary human osteoblasts and subsequent analysis of cell morphology, viability, proliferation and differentiation. The results are correlated with the amount of strontium that is released from the coating in biomedical buffer solution, quantified by inductively coupled plasma mass spectrometry (ICP-MS). Results: Dense coatings, consisting of SrOxCly, of more than 100 nm thickness and columnar structure, were prepared. TEM images of cross sections clearly show an incoherent but well-structured interface between coating and substrate without any cracks. Sr2+ is released from the SrOxCly coating into physiological solution as proven by ICP-MS analysis. Cell culture studies showed excellent biocompatibility of the functionalized alloy. Conclusions: Ti-40Nb alloy, a potential orthopedic implant material for osteoporosis patients, could be successfully plasma coated with a dense SrOxCly film. The material performed well in in vitro tests. Nevertheless, the Sr2+ release must be optimized in future work to meet the requirements of an effective drug delivery system.